Latest revision as of 01:54, 27 July 2015

This report presents a brief introduction to wind energy and technologies available for horizontal wind turbines. A detailed taxonomy for horizontal axis wind turbines is presented covering parts of the turbine, control systems, applications among others. A detailed landscape analysis of patent and non-patent literature is done with a focus on Doubly-fed Induction Generators (DFIG) used in the horizontal axis wind turbines for efficient power generation. The product information of major players in the market is also captured for Doubly-fed Induction Generators. The final section of the report covers the existing and future market predictions for wind energy-based power generation.

Process Flow

Introduction

We have been using wind power at least since 5000 BC to propel sailboats and sailing ships, and architects have used wind-driven natural ventilation in buildings since similarly ancient times. The use of wind to provide mechanical power came later.
Harnessing renewable alternative energy is the ideal way to tackle the energy crisis, with due consideration given to environmental pollution, that looms large over the world.

Renewable energy is also called "clean energy" or "green power" because it doesn’t pollute the air or the water. Wind energy is one such renewable energy source that harnesses natural wind power.

Market Research

The History of Wind Energy

To read about the History of Wind Energy, click here

Global Wind Energy Market

Market Overview

In the year 2010, the wind capacity reached worldwide 196’630 Megawatt, after 159’050 MW in 2009, 120’903 MW in 2008, and 93’930 MW in 2007.

Source: World Wind Energy Report, 2010

Wind power showed a growth rate of 23.6 %, the lowest growth since 2004 and the second lowest growth of the past decade.
For the first time in more than two decades, the market for new wind turbines was smaller than in the previous year and reached an overall size of 37’642 MW, after 38'312 MW in 2009.

Source: World Wind Energy Report, 2010

All wind turbines installed by the end of 2010 worldwide can generate 430 Tera watt hours per annum, more than the total electricity demand of the United Kingdom, the sixth largest economy of the world, and equaling 2.5 % of the global electricity consumption.
In the year 2010, altogether 83 countries, one more than in 2009, used wind energy for electricity generation. 52 countries increased their total installed capacity, after 49 in the previous year.
The turnover of the wind sector worldwide reached 40 billion Euros (55 billion US$) in 2010, after 50 billion Euros (70 billion US$) in the year 2009. The decrease is due to lower prices for wind turbines and a shift towards China.
China became number one in total installed capacity and the center of the international wind industry, and added 18’928 Megawatt within one year, accounting for more than 50 % of the world market for new wind turbines.
The wind sector in 2010 employed 670’000 persons worldwide.
Nuclear disaster in Japan and oil spill in Gulf of Mexico will have long-term impact on the prospects of wind energy. Governments need to urgently reinforce their wind energy policies.
WWEA sees a global capacity of 600’000 Megawatt as possible by the year 2015 and more than 1’500’000 Megawatt by the year 2020.

Source: World Wind Energy Report, 2010

Global Market Forecast

Global Wind Energy Outlook 2010, provides forecast under three different scenarios - Reference, Moderate and Advanced.
The Global Cumulative Wind Power Capacity is estimated to reach 572,733 MW by the year 2030, under the Reference Scenario
The Global Cumulative Wind Power Capacity is estimated to reach 1,777,550 MW by the year 2030, under the Moderate Scenario
The Global Cumulative Wind Power Capacity is estimated to reach 2,341,984 MW by the year 2030, under the Advanced Scenario
The following chart shows the Global Cumulative Wind Power Capacity Forecast,under the different scenarios:

Global Cumulative Wind Power Capacity Forecast, Source: Global Wind Energy Outlook 2010

Source: Global Wind Energy Outlook 2010

Market Growth Rates

The growth rate is the relation between the new installed wind power capacity and the installed capacity of the previous year.
With 23.6 %, the year 2010 showed the second lowest growth rate of the last decade.

World Market Growth Rates, Source: World Wind Energy Report, 2010

Before 2010, the annual growth rate had continued to increase since the year 2004, peaking in 2009 at 31.7%, the highest rate since 2001.
The highest growth rates of the year 2010 by country can be found in Romania, which increased its capacity by 40 times.
The second country with a growth rate of more than 100 % was Bulgaria (112%).
In the year 2009, four major wind markets had more than doubled their wind capacity: China, Mexico, Turkey, and Morocco.
Next to China, strong growth could be found mainly in Eastern European and South Eastern European countries: Romania, Bulgaria, Turkey, Lithuania, Poland, Hungary, Croatia and Cyprus, and Belgium.
Africa (with the exception of Egypt and Morocco) and Latin America (with the exception of Brazil), are again lagging behind the rest of the world in the commercial use of wind power.
The Top 10 countries by Growth Rate are shown in the figure listed below (only markets bigger than 200 MW have been considered):

Top Countries by Market Growth Rates, Source: World Wind Energy Report, 2010

Geographical Market Distribution

China became number one in total installed capacity and the center of the international wind industry, and added 18'928 Megawatt within one year, accounting for more than 50 % of the world market for new wind turbines.
Major decrease in new installations can be observed in North America and the USA lost its number one position in total capacity to China.
Many Western European countries are showing stagnation, whereas there is strong growth in a number of Eastern European countries.
Germany keeps its number one position in Europe with 27'215 Megawatt, followed by Spain with 20'676 Megawatt.
The highest shares of wind power can be found in three European countries: Denmark (21.0%), Portugal (18.0 %) and Spain (16.0%).
Asia accounted for the largest share of new installations (54.6%), followed by Europe (27.0%) and North America (16.7 %).
Latin America (1.2%) and Africa (0.4%) still played only a marginal role in new installations.
Africa: North Africa represents still lion share of installed capacity, wind energy plays hardly a role yet in Sub-Sahara Africa.
Nuclear disaster in Japan and oil spill in Gulf of Mexico will have long-term impact on the prospects of wind energy. Governments need to urgently reinforce their wind energy policies.

Source: World Wind Energy Report, 2010

The regional breakdowns for the period 2009-2030 has been provided for the following three scenarios:

Regional Breakdown: Reference scenario (GWEO 2010) Regional Breakdown: Moderate scenario (GWEO 2010) Regional Breakdown: Advanced scenario (GWEO 2010)

Note: To know more about the Forecast Scenarios click here

Country-wise Market Distribution

In 2010, the Chinese wind market represented more than half of the world market for new wind turbines adding 18.9 GW, which equals a market share of 50.3%.
A sharp decrease in new capacity happened in the USA whose share in new wind turbines fell down to 14.9% (5.6 GW), after 25.9% or 9.9 GW in

the year 2009.

Nine further countries could be seen as major markets, with turbine sales in a range between 0.5 and 1.5 GW: Germany, Spain, India, United

Kingdom, France, Italy, Canada, Sweden and the Eastern European newcomer Romania.

Further, 12 markets for new turbines had a medium size between 100 and 500 MW: Turkey, Poland, Portugal, Belgium, Brazil, Denmark, Japan, Bulgaria, Greece, Egypt, Ireland, and Mexico.
By end of 2010, 20 countries had installations of more than 1 000 MW, compared with 17 countries by end of 2009 and 11 countries byend of 2005.
Worldwide, 39 countries had wind farms with a capacity of 100 Megawatt or more installed, compared with 35 countries one year ago, and 24 countries five years ago.
The top five countries (USA, China, Germany, Spain and India) represented 74.2% of the worldwide wind capacity, significantly more than 72.9 % in the year.
The USA and China together represented 43.2% of the global wind capacity (up from 38.4 % in 2009).
The newcomer on the list of countries using wind power commercially is a Mediterranean country, Cyprus, which for the first time installed a larger grid-connected wind farm, with 82 MW.

Source: World Wind Energy Report, 2010

The top 10 countries by Total Installed Capacity for the year 2010, is illustrated in the chart below:

Top Countries by Market Growth Rates, Source: World Wind Energy Report, 2010

To view the Top 10 countries by different other parameters for the year 2010, click on the links below:

Top 10 countries by Total New Installed Capacity Top 10 countries by Capacity per Capita (kW/cap) Top 10 countries by Capacity per Land Area (kW/sq. km) Top 10 countries by Capacity per GDP (kW/ million USD)

To view the Country-wise Installed Wind Power Capacity (MW) 2002-2010 (Source: World Wind Energy Association), click here

Country Profiles

China

Wind Energy Outlook for China - 2011 & Beyond
Despite its rapid and seemingly unhampered expansion, the Chinese wind power sector continues to face significant challenges, including issues surrounding grid access and integration, reliability of turbines and a coherent strategy for developing China’s offshore wind resource. These issues will be prominent during discussions around the twelfth Five-Year Plan, which will be passed in March 2011. According to the draft plan, this is expected to reflect the Chinese government’s continuous and reinforced commitment to wind power development, with national wind energy targets of 90 GW for 2015 and 200 GW for 2020.

For a detailed country profile of China please visit this China Wind Energy Profile Link

India

Wind Energy Main market developments in 2010
Today the Indian market is emerging as one of the major manufacturing hubs for wind turbines in Asia. Currently, seventeen manufacturers have an annual production capacity of 7,500 MW. According to the WISE, the annual wind turbine manufacturing capacity in India is likely to exceed 17,000 MW by 2013.
The Indian market is expanding with the leading wind companies like Suzlon, Vestas, Enercon, RRB Energy and GE now being joined by new entrants like Gamesa, Siemens, and WinWinD, all vying for a greater market share. Suzlon, however, is still the market leader with a market share of over 50%.
The Indian wind industry has not been significantly affected by the financial and economic crises. Even in the face of a global slowdown, the Indian annual wind power market has grown by almost 68%. However, it needs to be pointed out that the strong growth in 2010 might have been stimulated by developers taking advantage of the accelerated depreciation before this option is phased out.

For a detailed country profile of India please visit this India Wind Energy Profile Link

Market Share Analysis

Global Market Share

Vestas leads the Global Market in the 2010 with a 12% market share according to Make Consulting, while BTM Consulting reports it to have a 14.8% market share.
According to Make Consulting, the global market share of Vestas has decreased from 19% in 2008, to 14.5% in 2009, to 12% in 2010.
According to BTM Consulting, the global market share of Vestas has changed from 19% in 2008, to 12% in 2009, to 14.8% in 2010.
According to Make Consulting, the global market share of GE Energy has decreased from 18% in 2008, to 12.5% in 2009, to 10% in 2010.
The market share of world no. 2 Sinovel, has been constantly increasing, from 5% in 2008 , to 9.3% in 2009, to 11% in 2010
The top 5 companies have been occupying more than half of the Global Market Share from 2008 to 2010

Source: Make Consulting, BTM Global Consulting

The chart given below illustrates the Global Market Share Comparison of Major Wind Energy Companies for the period 2008-2010, as provided by two different agencies, Make Consulting and BTM Consulting:

Global Market Share Comparison of Major Companies for the period 2008-2010 , Source: Make Consulting, BTM Global Consulting

Market Share - Top 10 Markets

While Vestas is the Global Leader, it is the leader in only one of Top 10 markets, which is 10^th placed Sweden
But, Vestas is ranked 2^nd in 5 of Top 10 markets
Sinovel, ranked 2^nd globally, features only once in the Top 3 Companies list in the Top 10 markets, but scores globally because it leads the largest market China
The table given below illustrates the Top 3 players in Top 10 Wind Energy Markets of the world:

Market	MW	No. 1	No. 2	No. 3
China	18928	Sinovel	Goldwind	Dongfang
USA	5115	GE Energy	Vestas	Siemens
India	2139	Suzlon	Enercon	Vestas
Germany	1551	Enercon	Vestas	Suzlon
UK	1522	Siemens	Vestas	Gamesa
Spain	1516	Gamesa	Vestas	GE Energy
France	1186	Enercon	Suzlon	Vestas
Italy	948	Gamesa	Vestas	Suzlon
Canada	690	Siemens	GE Energy	Enercon
Sweeden	604	Vestas	Enercon	Siemens
Source: BTM Consult - part of Navigant Consulting - March 2011

Source: BTM Consult

Company Profiles

Vestas Wind Systems A/S
Suzlon Energy

Major Wind Turbine Suppliers

Turbine maker	Rotor blades	Gear boxes	Generators	Towers	Controllers
Vestas	Vestas, LM	Bosch Rexroth, Hansen, Wingery, Moventas	Weier, Elin, ABB, LeroySomer	Vestas, NEG, DMI	Cotas (Vestas), NEG (Dancontrol)
GE energy	LM, Tecsis	Wingery, Bosch, Rexroth, Eickhoff, GE	Loher, GE	DMI, Omnical, SIAG	GE
Gamesa	Gamesa, LM	Echesa (Gamesa), Winergy, Hansen	Indar (Gamesa), Cantarey	Gamesa	Ingelectric (Gamesa)
Enercon	Enercon	Direct drive	Enercon	KGW, SAM	Enercon
Siemens wind	Siemens, LM	Winergy	ABB	Roug, KGW	Siemens, KK Electronic
Suzlon	Suzlon	Hansen, Winergy	Suzlon, Siemens	Suzlon	Suzlon, Mita Teknik
Repower	LM	Winergy, Renk, Eickhoff	N/A	N/A	Mita Teknik, ReGuard
Nordex	Nordex	Winergy, Eickhoff, Maag	Loher	Nordex, Omnical	Nordex, Mita Teknik
Source: BTM Consult

Products of Top Companies

S.No.	Company	Product	Specifications
1	Vestas	V80	Rated Power: 2.0 MW, Frequency: 50 Hz/60 Hz, Number of Poles: 4-pole, Operating Temperature: -30°C to 40°
2	Vestas	V90	Rated Power: 1.8/2.0 MW, Frequency : 50 Hz/60 Hz, Number of Poles : 4-pole(50 Hz)/6-pole(60 Hz), Operating Temperature: -30°C to 40°
3	Vestas	V90 Offshore	Rated Power: 3.0 MW, Frequency: 50 Hz/60 Hz, Number of Poles: 4-pole, Operating Temperature: -30°C to 40°
4	North Heavy Company	2 MW DFIG	Rated Power: 2.0 MW, Rated Voltage: 690V, Rated Current: 1670A, Frequency: 50Hz, Number of Poles : 4-pole, Rotor Rated Voltage: 1840V, Rotor Rated Current 670A, Rated Speed: 1660rpm; Power Speed Range: 520-1950 rpm, Insulation Class: H, Protection Class: IP54, Motor Temperature Rise =<95K
5	Gamesa	G90	Rated Voltage: 690 V, Frequency: 50 Hz, Number of Poles: 4, Rotational Speed: 900:1,900 rpm (rated 1,680 rpm) (50Hz); Rated Stator Current: 1,500 A @ 690 V, Protection Class: IP 54, Power Factor(standard): 0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, Power Factor(Optional): 0.95 CAP - 0.95 IND throughout the power range
6	Nordex	N80	Rated Power: 2.5 MW, Rated Voltage: 690V, Frequency: 50/60Hz, Cooling Systems: liquid/air
7	Nordex	N90	Rated Power: 2.5 MW, Rated Voltage: 690V, Frequency: 50/60Hz, Cooling Systems: liquid/air
8	Nordex	N100	Rated Power: 2.4 MW, Rated Voltage: 690V, Frequency: 50/60Hz, Cooling Systems: liquid/air
9	Nordex	N117	Rated Power: 2.5 MW, Rated Voltage: 690V, Frequency: 50/60Hz, Cooling Systems: liquid/air
10	Converteam	DFIG	NA
11	Xian Geoho Energy Technology	1.5MW DFIG	Rated Power: 1550KW, Rated Voltage: 690V, Rated Speed: 1755 r/min, Speed Range: 975~1970 r/min, Number of Poles: 4-pole, Stator Rated Voltage: 690V±10%, Stator Rated Current: 1115A; Rotor Rated Voltage: 320V, Rotor Rated Current: 430A, Winding Connection: Y / Y, Power Factor: 0.95(Lead) ~ 0.95Lag, Protection Class: IP54, Insulation Class: H, Work Mode: S1, Installation ModeI: M B3, Cooling Mode: Air cooling, Weight: 6950kg
12	Tecowestinghouse	TW450XX (0.5-1 KW)	Rated Power: 0.5 -1 KW, Rated Voltage: 460/ 575/ 690 V, Frequency: 50/ 60 Hz, Number of Poles: 4/6, Ambient Temp.(°C): -40 to 50, Speed Range (% of Synch. Speed): 68% to 134%, Power Factor (Leading): -0.90 to +0.90 , Insulation Class: H/F, Efficiency: >= 96%
13	Tecowestinghouse	TW500XX (1-2 KW)	Rated Power: 1-2 kW, Rated Voltage: 460/ 575/ 690 V, Frequency: 50/ 60 Hz, Number of Poles: 4/6, Ambient Temp.(°C): -40 to 50; Speed Range (% of Synch. Speed): 68 to 134%, Power Factor(Leading): -0.90 to +0.90, Insulation Class: H/F, Efficiency: >= 96%
14	Tecowestinghouse	TW560XX (2-3 KW)	Rated Power: 2-3kW, Rated Voltage: 460/ 575/ 690 V, Frequency: 50/ 60 Hz, Number of Poles: 4/6, Ambient Temp(°C): -40 to 50, Speed Range(% of Synch. Speed): 68 to 134%, Power Factor(Leading): -0.90 to +0.90, Insulation Class: H/F, Efficiency: >= 96%.
15	Acciona	AW1500	Rated Power: 1.5MW, Rated Voltage: 690 V, Frequency: 50 Hz, Number of Poles: 4, Rotational Speed: 900:1,900 rpm(rated 1,680 rpm) (50Hz), Rated Stator Current: 1,500 A @ 690 V, Protection Class: IP54, Power Factor(standard): 0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, Power factor(optional): 0.95 CAP - 0.95 IND throughout the power range
16	Acciona	AW3000	Rated Power: 3.0MW, Rated Voltage: 690 V, Frequency: 50 Hz, Number of Poles: 4, Rotational Speed: 900:1,900 rpm(rated 1,680 rpm) (50Hz), Rated Stator Current: 1,500 A @ 690 V, Protection Class: IP54, Power Factor(standard): 0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, Power Factor (optional): 0.95 CAP - 0.95 IND throughout the power range
17	General Electric	GE 1.5/2.5MW	Rated Power: 1.5/2.5 MW, Frequency(Hz): 50/60

IP Search & Analysis

Doubly-fed Induction Generator: Search Strategy

The present study on the IP activity in the area of horizontal axis wind turbines with focus on Doubly-fed Induction Generator (DFIG) is based on a search conducted on Thomson Innovation.

Control Patents

S. No.	Patent/Publication No.	Publication Date (mm/dd/yyyy)	Assignee/Applicant	Title
1	US6278211	08/02/01	Sweo Edwin	Brush-less doubly-fed induction machines employing dual cage rotors
2	US6954004	10/11/05	Spellman High Voltage Electron	Doubly fed induction machine
3	US7411309	08/12/08	Xantrex Technology	Control system for doubly fed induction generator
4	US7485980	02/03/09	Hitachi	Power converter for doubly-fed power generator system
5	US7800243	09/21/10	Vestas Wind Systems	Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed
6	US7830127	11/09/10	Wind to Power System	Doubly-controlled asynchronous generator

Patent Classes

S. No.	Class No.	Class Type	Definition
1	F03D9/00	IPC	Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for / Wind motors / Adaptations of wind motors for special use; Combination of wind motors with apparatus driven thereby (aspects predominantly concerning driven apparatus)
2	F03D9/00C	ECLA	Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for / Wind motors / Adaptations of wind motors for special use; Combination of wind motors with apparatus driven thereby (aspects predominantly concerning driven apparatus) / The apparatus being an electrical generator
3	H02J3/38	IPC	Generation, conversion, or distribution of electric power / Circuit arrangements or systems for supplying or distributing electric power; systems for storing electric energy / Circuit arrangements for ac mains or ac distribution networks / Arrangements for parallely feeding a single network by two or more generators, converters or transformers
4	H02K17/42	IPC	Generation, conversion, or distribution of electric power / Dynamo-electric machines / Asynchronous induction motors; Asynchronous induction generators / Asynchronous induction generators
5	H02P9/00	IPC	Generation, conversion, or distribution of electric power / Control or regulation of electric motors, generators, or dynamo-electric converters; controlling transformers, reactors or choke coils / Arrangements for controlling electric generators for the purpose of obtaining a desired output
6	290/044	USPC	Prime-mover dynamo plants / electric control / Fluid-current motors / Wind
7	290/055	USPC	Prime-mover dynamo plants / Fluid-current motors / Wind
8	318/727	USPC	Electricity: motive power systems / Induction motor systems
9	322/047	USPC	Electricity: single generator systems / Generator control / Induction generator

Concept Table

S. No.	Concept 1	Concept 2	Concept 3
S. No.	Doubly Fed	Induction	Generator
1	doubly fed	induction	generator
2	double output	asynchronous	machines
3	dual fed		systems
4	dual feed
5	dual output

Thomson Innovation Search

Database: Thomson Innovation
Patent coverage: US EP WO JP DE GB FR CN KR DWPI
Time line: 01/01/1836 to 07/03/2011

S. No.	Concept	Scope	Search String	No. of Hits
1	Doubly-fed Induction Generator: Keywords(broad)	Claims, Title, and Abstract	(((((doubl3 OR dual3 OR two) ADJ3 (power2 OR output4 OR control4 OR fed OR feed3)) NEAR5 (induction OR asynchronous)) NEAR5 (generat3 OR machine1 OR dynamo*1)) OR dfig or doig)	873
2	Doubly-fed Induction Generator: Keywords(broad)	Full Spec.	(((((doubl3 OR dual3 OR two) ADJ3 (power2 OR output1 OR control4 OR fed OR feed3)) NEAR5 (generat3 OR machine1 OR dynamo*1))) OR dfig or doig)	-
3	Induction Machine: Classes	US, IPC, and ECLA Classes	((318/727 OR 322/047) OR (H02K001742))	-
4	Generators: Classes	US, IPC, and ECLA Classes	((290/044 OR 290/055) OR (F03D000900C OR H02J000338 OR F03D0009* OR H02P0009*))	-
5	Combined Query	-	2 AND 3	109
6	Combined Query	-	2 AND 4	768
7	French Keywords	Claims, Title, and Abstract	((((doubl3 OR dual3 OR two OR deux) NEAR4 (nourris OR feed3 OR puissance OR sortie1 OR contrôle1)) NEAR4 (induction OR asynchron1) NEAR4 (générateur1 OR generator1 OR machine1 OR dynamo1)) OR dfig or doig)	262
8	German Keywords	Claims, Title, and Abstract	(((((doppel1 OR dual OR two OR zwei) ADJ3 (ausgang OR ausgänge OR kontroll OR control4 OR gesteuert OR macht OR feed1 OR gefüttert OR gespeiste1)) OR (doppeltgefüttert OR doppeltgespeiste1)) NEAR4 (((induktion OR asynchronen) NEAR4 (generator2 OR maschine1 OR dynamo*1)) OR (induktion?maschinen OR induktion?generatoren OR asynchronmaschine OR asynchrongenerator))) OR dfig)	306
9	Doubly-fed Induction Generator: Keywords(narrow)	Full Spec.	(((((((doubl3 OR dual3) ADJ3 (power2 OR output4 OR control4 OR fed OR feed3))) NEAR5 (generat3 OR machine1 OR dynamo*1))) SAME wind) OR (dfig SAME wind))	1375
10	Top Assignees	-	(vestas* OR (gen* ADJ2 electric) OR ge OR hitachi OR woodward OR repower OR areva OR gamesa OR ingeteam OR nordex OR siemens OR (abb ADJ2 research) OR (american ADJ2 superconductor) OR (korea ADJ2 electro) OR (univ NEAR3 navarra) OR (wind OR technolog*) OR (wind ADJ2 to ADJ2 power))	-
11	Combined Query	-	2 AND 10	690
12	Top Inventors	-	((Andersen NEAR2 Brian) OR (Engelhardt NEAR2 Stephan) OR (Ichinose NEAR2 Masaya) OR (Jorgensen NEAR2 Allan NEAR2 Holm) OR ((Scholte ADJ2 Wassink) NEAR2 Hartmut) OR (OOHARA NEAR2 Shinya) OR (Rivas NEAR2 Gregorio) OR (Erdman NEAR2 William) OR (Feddersen NEAR2 Lorenz) OR (Fortmann NEAR2 Jens) OR (Garcia NEAR2 Jorge NEAR2 Martinez) OR (Gertmar NEAR2 Lars) OR (KROGH NEAR2 Lars) OR (LETAS NEAR2 Heinz NEAR2 Hermann) OR (Lopez NEAR2 Taberna NEAR2 Jesus) OR (Nielsen NEAR2 John) OR (STOEV NEAR2 Alexander) OR (W?ng NEAR2 Haiqing) OR (Yuan NEAR2 Xiaoming))	-
13	Combined Query	-	((3 OR 4) AND 10)	899
14	Final Query	-	1 OR 5 OR 6 OR 7 OR 8 OR 9 OR 11 OR 13	2466(1060 INPADOC Families)

Taxonomy

Use the mouse(click and drag/scroll up or down/click on nodes) to explore nodes in the detailed taxonomy
Click on the red arrow adjacent to the node name to view the content for that particular node in the dashboard

Sample Analysis

A sample of 139 patents from the search is analyzed based on the taxonomy. Provided a link below for sample spread sheet analysis for doubly-fed induction generators.

Patent Analysis

S.No.	Patent/Publication No.	Publication Date (mm/dd/yyyy)	Assignee/Applicant	Title	Dolcera Analysis
S.No.	Patent/Publication No.	Publication Date (mm/dd/yyyy)	Assignee/Applicant	Title	Problem	Solution
1	US20100117605	05/13/10	Woodward	Method of and apparatus for operating a double-fed asynchronous machine in the event of transient mains voltage changes	The short-circuit-like currents in the case of transient mains voltage changes lead to a corresponding air gap torque which loads the drive train and transmission lines can damages or reduces the drive train and power system equipments.	The method presents that the stator connecting with the network and the rotor with a converter. The converter is formed to set a reference value of electrical amplitude in the rotor, by which a reference value of the electrical amplitude is set in the rotor after attaining a transient mains voltage change, such that the rotor flux approaches the stator flux.
2	US20100045040	02/25/10	Vestas Wind Systems	Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed	The DFIG system has poor damping of oscillations within the flux dynamics due to cross coupling between active and reactive currents, which makes the system potentially unstable under certain circumstances and complicates the work of the rotor current controller. These oscillations can damage the drive train mechanisms.	A compensation block is arranged, which feeds a compensation control output to the rotor of the generator. The computation unit computes the control output during operation of the turbine to compensate partly for dependencies on a rotor angular speed of locations of poles of a generator transfer function, so that the transfer function is made independent of variations in the speed during operation of the turbine which eliminates the oscillations and increases the efficiency of the wind turbine.
3	US20090267572	10/29/09	Woodward	Current limitation for a double-fed asynchronous machine	Abnormal currents can damage the windings in the doubly- fed induction generator. Controlling these currents with the subordinate current controllers cannot be an efficient way to extract the maximum amount of active power.	The method involves delivering or receiving of a maximum permissible reference value of an active power during an operation of a double-fed asynchronous machine, where predetermined active power and reactive power reference values are limited to a calculated maximum permissible active and reactive power reference values, and hence ensures reliable regulated effect and reactive power without affecting the power adjustment, the rotor is electrically connected to a pulse-controlled inverter by slip rings with a static frequency changer, and thus a tension with variable amplitude and frequency is imposed in the rotor.
4	US20090008944	01/08/09	Universidad Publica De Navarra	Method and system of control of the converter of an electricity generation facility connected to an electricity network in the presence of voltage sags in said network	Double-fed asynchronous generators are very sensitive to the faults that may arise in the electricity network, such as voltage sags. During the sag conditions the current which appears in said converter may reach very high values, and may even destroy it.	During the event of a voltage sag occurring, the converter imposes a new set point current which is the result of adding to the previous set point current a new term, called demagnetizing current, It is proportional to a value of free flow of a generator stator. A difference between a value of a magnetic flow in the stator of the generator and a value of a stator flow associated to a direct component of a stator voltage is estimated. A value of a preset calculated difference is multiplied by a factor for producing the demagnetizing current.
5	US7355295	04/08/08	Ingeteam Energy	Variable speed wind turbine having an exciter machine and a power converter not connected to the grid	a) The active switching of the semiconductors of the grid side converter injects undesirable high frequency harmonics to the grid. b) The use of power electronic converters (4) connected to the grid (9) causes harmonic distortion of the network voltage.	Providing the way that power is only delivered to the grid through the stator of the doubly fed induction generator, avoiding undesired harmonic distortion. Grid Flux Orientation (GFO) is used to accurately control the power injected to the grid. An advantage of this control system is that it does not depend on machine parameters, which may vary significantly, and theoretical machine models, avoiding the use of additional adjusting loops and achieving a better power quality fed into the utility grid.
6	US20080203978	08/28/08	Semikron	Frequency converter for a double-fed asynchronous generator with variable power output and method for its operation	Optislip circuit with a resistor is used when speed is above synchronous speed, results in heating the resistor and thus the generator leads to limitation of operation in super synchronous range which results in tower fluctuations.	Providing a back-to-back converter which contains the inverter circuit has direct current (DC) inputs, DC outputs, and a rotor-rectifier connected to a rotor of a dual feed asynchronous generator. A mains inverter is connected to a power grid, and an intermediate circuit connects one of the DC inputs with the DC outputs. The intermediate circuit has a semiconductor switch between the DC outputs, an intermediate circuit condenser between the DC inputs, and a diode provided between the semiconductor switch and the condenser. Thus the system is allowed for any speed of wind and reduces the tower fluctuations.
7	US20070210651	09/13/07	Hitachi	Power converter for doubly-fed power generator system	During the ground faults, excess currents is induced in the secondary windings and flows into power converter connected to secondary side and may damage the power converter. Conventional methods of increasing the capacity of the power converter increases system cost, degrade the system and takes time to activate the system to supply power again.	The generator provided with a excitation power converter connected to secondary windings of a doubly-fed generator via impedance e.g. reactor, and a diode rectifier connected in parallel to the second windings of the doubly-fed generator via another impedance. A direct current link of the rectifier is connected in parallel to a DC link of the converter. A controller outputs an on-command to a power semiconductor switching element of the converter if a value of current flowing in the power semiconductor switching element is a predetermined value or larger.
8	US20070132248	06/14/07	General Electric	System and method of operating double fed induction generators	Wind turbines with double fed induction generators are sensitive to grid faults. Conventional methods are not effective to reduce the shaft stress during grid faults and slow response and using dynamic voltage restorer (DVR) is cost expensive.	The protection system has a controlled impedance device. Impedance device has bidirectional semiconductors such triac, assembly of thyristors or anti-parallel thyristors. Each of the controlled impedance devices is coupled between a respective phase of a stator winding of a double fed induction generator and a respective phase of a grid side converter. The protection system also includes a controller configured for coupling and decoupling impedance in one or more of the controlled impedance devices in response to changes in utility grid voltage and a utility grid current. High impedance is offered to the grid during network faults to isolate the dual fed wind turbine generator.
9	US20060192390	08/31/06	Gamesa Innovation	Control and protection of a doubly-fed induction generator system	A short-circuit in the grid causes the generator to feed high stator-currents into the short-circuit and the rotor-currents increase very rapidly which cause damage to the power-electronic components of the converter connecting the rotor windings with the rotor-inverter.	The converter is provided with a clamping unit which is triggered from a non-operation state to an operation state, during detection of over-current in the rotor windings. The clamping unit comprises passive voltage-dependent resistor element for providing a clamping voltage over the rotor windings when the clamping unit is triggered.
10	US20050189896	09/01/05	ABB Research	Method for controlling doubly-fed machine	Controlling the double fed machines on the basis of inverter control to implement the targets set for the machine, this model is extremely complicated and includes numerous parameters that are often to be determined.	A method is provided to use a standard scalar-controlled frequency converter for machine control. A frequency reference for the inverter with a control circuit, and reactive power reference are set for the machine. A rotor current compensation reference is set based on reactive power reference and reactive power. A scalar-controlled inverter is controlled for producing voltage for the rotor of the machine, based on the set frequency reference and rotor current compensation reference.

Click here to view the detailed analysis sheet for doubly-fed induction generators patent analysis.

Article Analysis

S.No.	Title	Publication Date (mm/dd/yyyy)	Journal/Conference	Dolcera Summary
1	Study on the Control of DFIG and its Responses to Grid Disturbances	01/01/06	Power Engineering Society General Meeting, 2006. IEEE	Presented dynamic model of the DFIG, including mechanical model, generator model, and PWM voltage source converters. Vector control strategies adapted for both the RSC and GSC to control speed and reactive power independently. Control designing methods, such as pole-placement method and the internal model control are used. MATLAB/Simulink is used for simulation.
2	Application of Matrix Converter for Variable Speed Wind Turbine Driving an Doubly Fed Induction Generator	05/23/06	Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006.	A matrix converter is replaced with back to back converter in a variable speed wind turbine using doubly fed induction generator. Stable operation is achieved by stator flux oriented control technique and the system operated in both sub and super synchronous modes, achieved good results.
3	Optimal Power Control Strategy of Maximizing Wind Energy Tracking and Conversion for VSCF Doubly Fed Induction Generator System	08/14/06	Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International	Proposed a new optimal control strategy of maximum wind power extraction strategies and testified by simulation. The control algorithm also used to minimize the losses in the generator. The dual passage excitation control strategy is applied to decouple the active and reactive powers. With this control system, the simulation results show the good robustness and high generator efficiency is achieved.
4	A Torque Tracking Control algorithm for Doubly–fed Induction Generator	01/01/08	Journal of Electrical Engineering	Proposed a torque tracking control algorithm for Doubly fed induction generator using PI controllers. It is achieved by controlling the rotor currents and using a stator voltage vector reference frame.
5	Fault Ride Through Capability Improvement Of Wind Farms Using Doubly Fed Induction Generator	09/04/08	Universities Power Engineering Conference, 2008. UPEC 2008. 43rd International	An active diode bridge crowbar switch presented to improve fault ride through capability of DIFG. Showed different parameters related to crowbar such a crowbar resistance, power loss, temperature and time delay for deactivation during fault.

Click here to view the detailed analysis sheet for doubly-fed induction generators article analysis.

Top Cited Patents

S. No.	Patent/Publication No.	Publication Date (mm/dd/yyyy)	Assignee/Applicant	Title	Citation Count
1	US5289041	02/22/94	US Windpower	Speed control system for a variable speed wind turbine	80
2	US4982147	01/01/91	Oregon State	Power factor motor control system	62
3	US5028804	07/02/91	Oregon State	Brushless doubly-fed generator control system	51
4	US5239251	08/24/93	Oregon State	Brushless doubly-fed motor control system	49
5	US6856038	02/15/05	Vestas Wind Systems	Variable speed wind turbine having a matrix converter	43
6	WO1999029034	06/10/99	Asea Brown	A method and a system for speed control of a rotating electrical machine with flux composed of two quantities	36
7	WO1999019963	04/22/99	Asea Brown	Rotating electric machine	36
8	US7015595	03/21/06	Vestas Wind Systems	Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control	34
9	US4763058	08/09/88	Siemens	Method and apparatus for determining the flux angle of rotating field machine or for position-oriented operation of the machine	32
10	US7095131	08/22/06	General Electric	Variable speed wind turbine generator	25

White Space Analysis

White-space analysis provides the technology growth and gaps in the technology where further R&D can be done to gain competitive edge and to carry out incremental innovation.
Dolcera provides White Space Analysis in different dimensions. Based on Product, Market, Method of Use, Capabilities or Application or Business Area and defines the exact categories within the dimension.
Below table shows a sample representation of white space analysis for controlling DFIG parameters with converters, based on the sample analysis.

White Space of converters used to control

Active power

Reactive Power

Decoupled P-Q control

Field oriented control

Direct torque control

Speed control

Frequency Control

Pitch control

PWM Technique

Low voltage ride through

Network fault/Grid fault

Symmetrical and Asymmetrical Faults

Temp control

Grid Side active converters

US20070052394A1

US20060028025A1

US20100148508A1

US20100133816A1 EP2166226A1 US20070132248A1 US20070052394A1 US20100096853A1

US20100114388A1

US20090008938A1

WO2010079234A1

US20090230689A1 US20090206606A1 US20070024247A1

US20080296898A1 US20070273155A1 US20070278797A1

US20070052244A1

US20070024059A1 US20060238929A1

US20070177314A1

EP2166226A1

US20090121483A1 US20090008938A1

Grid side passive converters

US20030151259A1

Rotor side converter

US20100142237A1

US20070052394A1 US20060028025A1

US20100096853A1

US20100148508A1 US20100133816A1 US20070132248A1 US20070052394A1

US20100114388A1

US20090008938A1

WO2010079234A1

US20090230689A1 US20070024247A1

US20080129050A1

US20070182383A1

US20100002475A1

US20080296898A1 US20070273155A1 US20070278797A1

US20080157533A1

US20070052244A1 US20070024059A1 US20060238929A1

Matrix converters

Dolcera Dashboard

Dashboard Link

Doubly Fed Induction Generator - Dashboard

Flash Player is essential to view the Dolcera dashboard

Key Findings

Major Players

Vestas Wind Energy Systems and General Electric are the major players in wind energy generation technology.

Major Players

Key Patents

The key patents in the field are held by US Windpower, Oregon State and Vestas Wind Energy Systems.

Key Patents

IP Activity

Patenting activity has seen a very high growth rate in the last two years.

Year wise IP Activity

Geographical Activity

USA, China, Germany, Spain, and India are very active in wind energy research.

Geographical Activity

Research Trend

Around 86% patents are on controlling the doubly-fed induction generation(DFIG) which indicates high research activity going on in rating and controlling of the DFIG systems.

Issues in the Technology

86% of the patent on DFIG operation are focusing on grid connected mode of operation, suggesting continuous operation of the DFIG system during weak and storm winds, grid voltage sags, and grid faults are major issues in the current scenario.

Problem Solution Mapping

Emerging Player

Woodward is a new and fast developing player in the field of DFIG technology. The company filed 10 patent applications in the field in year 2010, while it has no prior IP activity.

Like this report?

This is only a sample report with brief analysis
Dolcera can provide a comprehensive report customized to your needs

Buy the customized report from Dolcera
Patent Analytics Services	Market Research Services	Purchase Patent Dashboard
Patent Landscape Services	Dolcera Processes	Industry Focus
Patent Search Services	Patent Alerting Services	Dolcera Tools

References

Background References

Image References

Contact Dolcera

Samir Raiyani
Email: info@dolcera.com
Phone: +1-650-269-7952

S. No.	Title	Publication Date	Journal/Conference	Citations Count
1	Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation	May. 1996	IEEE Proceedings Electric Power Applications	906
2	Doubly fed induction generator systems for wind turbines	May. 2002	IEEE Industry Applications Magazine	508
3	Dynamic modeling of doubly fed induction generator wind turbines	May. 2003	IEEE Transactions on Power Systems	274
4	Modeling and control of a wind turbine driven doubly fed induction generator	Jun. 2003	IEEE Transactions on Energy Conversion	271
5	Ride through of wind turbines with doubly-fed induction generator during a voltage dip	Jun. 2005	IEEE Transactions on Energy Conversion	246
6	Dynamic modeling of a wind turbine with doubly fed induction generator	July. 2001	IEEE Power Engineering Society Summer Meeting, 2001	196
7	Modeling of the wind turbine with a doubly fed induction generator for grid integration studies	Mar. 2006	IEEE Transactions on Energy Conversion	174
8	A doubly fed induction generator using back-to-back PWM converters supplying an isolated load from a variable speed wind turbine	Sept. 1996	IEEE Proceedings Electric Power Applications	150
9	Doubly fed induction generator model for transient stability analysis	Jun. 2005	IEEE Transactions on Energy Conversion	106
10	Control of a doubly fed induction generator in a wind turbine during grid fault ride-through	Sept. 2006	IEEE Transactions on Energy Conversion	112

@@ Line 1: / Line 1: @@
-==Company Overview==
+This report presents a brief introduction to wind energy and technologies available for horizontal wind turbines. A detailed taxonomy for horizontal axis wind turbines is presented covering parts of the turbine, control systems, applications among others. A detailed landscape analysis of patent and non-patent literature is done with a focus on Doubly-fed Induction Generators (DFIG) used in the horizontal axis wind turbines for efficient power generation. The product information of major players in the market is also captured for Doubly-fed Induction Generators. The final section of the report covers the existing and future market predictions for wind energy-based power generation.
+[[Image:Wind_Flowchart.PNG|right|580px|thumb|Process Flow]]
-Vestas Wind Systems A/S engages in the development, manufacture, sale, and maintenance of wind technology that uses the energy of the wind to generate electricity. It offers wind turbines and wind power systems. The company also provides planning, installation, operation, and maintenance services. Vestas Wind Systems A/S has a strategic partnership with Marafeq to develop wind energy projects in Syria. It operates in Europe, the Americas, and the Asia Pacific. The company was founded in 1898 and is headquartered in Randers, Denmark. Revenues for the year 2010 rose 36%, to €6.9 billion, from nearly €5 billion in 2009, the company said. It expects revenues to hit €7 billion in 2011. Net profit rose 25% to about €156 million, up from about €125 million in 2009.
+<br>
+=Introduction=
+* We have been using wind power at least since 5000 BC to propel sailboats and sailing ships, and architects have used wind-driven natural ventilation in buildings since similarly ancient times. The use of wind to provide mechanical power came later.
+* Harnessing renewable alternative energy is the ideal way to tackle the energy crisis, with due consideration given to environmental pollution, that looms large over the world.
-Vestas delivered 5,842 megawatts worth of wind turbines in 2010, compared to 4,764 megawatts delivered in 2009, the company said.
+* Renewable energy is also called "clean energy" or "green power" because it doesn’t pollute the air or the water. Wind energy is one such renewable energy source that harnesses natural wind power.<br>
-The Global Wind Energy Council, based in Brussels, Belgium, said new wind turbine installations dropped to 35.8 gigawatts in 2010, from 38.6 gigawatts in 2009. Based on Vestas’ reported deliveries, the company’s world-wide marketshare rose to 16 percent in 2010, from 12 percent the previous year.
+== Read More? ==
+Click on '''[[Wind Energy Background]]''' to read more about wind energy.
-===Key Facts===
+In order to overcome the problems associated with fixed speed wind turbine system and to maximize the wind energy capture, many new wind farms are employing variable speed wind energy conversion systems (WECS) with doubly-fed induction generator (DFIG). It is the most popular and widely used scheme for the wind generators due to its advantages.
-{|border="2" cellspacing="0" cellpadding="4" width="55%" align="center"
+For variable-speed systems with limited variable-speed range, e.g. ±30% of synchronous speed, the doubly-fed induction generator(DFIG) can be an interesting solution. This is mainly due to the fact that the power electronic converter only has to handle a fraction (20-30%) of the total power as the converters are connected to the rotor and not to the stator. Therefore, the losses in the power electronic converter can be reduced, compared to a system where the converter has to handle the total power. The overall structure of wind power generation through DFIG as shown in the figure below.
-|align = "center" bgcolor = "#538ED5"|'''Headquarter'''
-|Vestas Wind Systems A/S<br>Alsvej 21<br>8940 Randers SV<br>Denmark
-|-
-|align = "center" bgcolor = "#538ED5"|'''Phone'''
-|(<nowiki>+</nowiki>45) 97 30 00 00
-|-
-|align = "center" bgcolor = "#538ED5"|'''Fax'''
-|(<nowiki>+</nowiki>45) 97 30 00 01
-|-
-|align = "center" bgcolor = "#538ED5"|'''E-mail'''
-|<font color="#0000FF"><u>[mailto:vestas@vestas.com vestas@vestas.com]</u></font>
-|-
-|align = "center" bgcolor = "#538ED5"|'''Website'''
-|<font color="#0000FF"><u>[http://www.vestas.com/ http://www.vestas.com/]</u></font>
-|-
-|align = "center" bgcolor = "#538ED5"|'''Turnover (in million €)'''
-|6,920
-|-
-|align = "center" bgcolor = "#538ED5"|'''Financial Year End'''
-|December
-|-
-|align = "center" bgcolor = "#538ED5"|'''Number of employees'''
-|23,252
-|-
-|}
-<br>
+=Market Research=
+==The History of Wind Energy==
-===Key Financials===
+To read about '''the History of Wind Energy''', '''[http://dolcera.com/wiki/index.php?title=The_History_of_Wind_Energy click here]'''
-[[Image:Vestas1.jpg|thumb|center|600*400 px]]
+==Global Wind Energy Market==
+===Market Overview===
+* In the year 2010, the wind capacity reached worldwide '''196’630 Megawatt''', after '''159’050 MW''' in 2009, '''120’903 MW''' in 2008, and '''93’930 MW''' in 2007.
+[[Image:World_Installed2.PNG|center|600px|thumb|Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
+* Wind power showed a growth rate of '''23.6 %''', the lowest growth since 2004 and the second lowest growth of the past decade.
+* For the first time in more than two decades, the market for new wind turbines was smaller than in the previous year and reached an overall size of '''37’642 MW''', after 38'312 MW in 2009.
+[[Image:New.PNG|center|600px|thumb|Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
+* All wind turbines installed by the end of 2010 worldwide can generate '''430 Tera watt hours per annum''', more than the total electricity demand of the United Kingdom, the sixth largest economy of the world, and equaling 2.5 % of the global electricity consumption.
+* In the year 2010, altogether '''83 countries''', one more than in 2009, used wind energy for electricity generation. 52 countries increased their total installed capacity, after 49 in the previous year.
+* The turnover of the wind sector worldwide reached '''40 billion Euros (55 billion US$) in 2010''', after 50 billion Euros (70 billion US$) in the year 2009. The decrease is due to lower prices for wind turbines and a shift towards China.
+* China became number one in total installed capacity and the center of the international wind industry, and added '''18’928 Megawatt''' within one year, accounting for more than 50 % of the world market for new wind turbines.
+* The wind sector in 2010 employed '''670’000 persons''' worldwide.
+* Nuclear disaster in Japan and oil spill in Gulf of Mexico will have long-term impact on the prospects of wind energy. Governments need to urgently reinforce their wind energy policies.
+* WWEA sees a global capacity of '''600’000 Megawatt''' as possible by the year 2015 and more than '''1’500’000 Megawatt''' by the year 2020.
-===Revenue Distribution===
+Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]
-The following table gives the geopraphical break-up of revenue distribution for the year 2010:
+===Global Market Forecast===
-<br>
+* Global Wind Energy Outlook 2010, provides forecast under  [http://dolcera.com/wiki/index.php?title=Forecast_Scenarios three different scenarios] - Reference, Moderate and Advanced.
+* The Global Cumulative Wind Power Capacity is estimated to reach 572,733 MW by the year 2030, under the Reference Scenario
+* The Global Cumulative Wind Power Capacity is estimated to reach 1,777,550 MW by the year 2030, under the Moderate Scenario
+* The Global Cumulative Wind Power Capacity is estimated to reach 2,341,984 MW by the year 2030, under the Advanced Scenario
+* The following chart shows the Global Cumulative Wind Power Capacity Forecast,under the different scenarios:
-{|border="2" cellspacing="0" cellpadding="4" width="50%" align="center"
+[[Image:Global_Forecast.PNG|center|1080px|thumb|Global Cumulative Wind Power Capacity Forecast, Source: [http://www.gwec.net/fileadmin/documents/Publications/GWEO%202010%20final.pdf Global Wind Energy Outlook 2010]]]
-|align = "center" bgcolor = "#538ED5"|'''Geography'''
-|align = "center" bgcolor = "#538ED5"|'''Revenue (€M)'''
-|align = "center" bgcolor = "#538ED5"|'''% of Total Revenue'''
-|-
-|Europe & Africa
-|align = "center"|4,162
-|align = "center"|60%
-|-
-|Americas
-|align = "center"|1,626
-|align = "center"|23%
-|-
-|Asia Pacific
-|align = "center"|1,132
-|align = "center"|16%
-|-
-|'''Total'''
-|align = "center"|'''6,920'''
-|align = "center"|'''100%'''
-|-
-|}
-<br>
-==Business Overview==
+Source: [http://www.gwec.net/fileadmin/documents/Publications/GWEO%202010%20final.pdf Global Wind Energy Outlook 2010]
-Vestas Wind Systems A/S engages in the development, manufacture, sale, and maintenance of wind technology that uses the energy of the wind to generate electricity. It offers wind turbines and wind power systems. The company also provides planning, installation, operation, and maintenance services. Vestas Wind Systems A/S has a strategic partnership with Marafeq to develop wind energy projects in Syria. It operates in Europe, the Americas, and the Asia Pacific. The company was founded in 1898 and is headquartered in Randers, Denmark. Its product range includes land and offshore wind turbines capable of generating between 850 kilowatts and 3 megawatts as well as supervisory control and data acquisition (SCADA) products, supplying a range of monitoring and control functions, allowing the wind power plants to be remotely supervised. The Company is operational internationally through a network of subsidiaries.
-To date, Vestas has installed over 41,400 wind turbines in around 70 countries on five continents. Along with this vast experience, the company has predicted that by 2020 as much as 10 per cent of the world’s electricity consumption will be generated by wind energy.
+===Market Growth Rates===
-<br>
+* The growth rate is the relation between the new installed wind power capacity and the installed capacity of the previous year.
+* With '''23.6 %''', the year 2010 showed the second lowest growth rate of the last decade.
-===Product & Services===
+[[Image:World_Market_Growth Rates.PNG|center|600px|thumb|World Market Growth Rates, Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
-Vestas offers a complete portfolio of products and services to its customers which includes:
+* Before 2010, the annual growth rate had continued to increase since the year 2004, '''peaking in 2009 at 31.7%''', the highest rate since 2001.
-* '''Wind Project Planning''' - plan for a reliable, successful project, delivered on time and on budget
+* The highest growth rates of the year 2010 by country can be found in '''Romania''', which increased its capacity by 40 times.
-* '''Procurement''' - offering a broad product portfolio to offer the ideal turbines for all sites and conditions
+* The second country with a growth rate of more than 100 % was '''Bulgaria (112%)'''.
-* '''Construction''' - co-ordinating with the customer to supply, install and balance the wind power plant according to the specific profile of the project
+* In the year 2009, four major wind markets had more than doubled their wind capacity: '''China, Mexico, Turkey, and Morocco'''.
-* '''Operation and Service''' - work in partnership with the client to control and maintain the wind power plant to the highest possible standards
+* Next to China, strong growth could be found mainly in '''Eastern European and South Eastern European''' countries: Romania, Bulgaria, Turkey, Lithuania, Poland, Hungary, Croatia and Cyprus, and Belgium.
-* '''Power Plant Optimization''' - Vestas uses predictive and preventive service and maintenance techniques, to reduce down time and optimise yield for the installed Vestas turbines
+* Africa (with the exception of Egypt and Morocco) and Latin America (with the exception of Brazil), are again lagging behind the rest of the world in the commercial use of wind power.
+* The Top 10 countries by Growth Rate are shown in the figure listed below (only markets bigger than 200 MW have been considered):
-<br>
+[[Image:Top_Growth_Countries.PNG|center|600px|thumb|Top Countries by Market Growth Rates, Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
-'''Product Portfolio'''
+==Geographical Market Distribution==
+* China became number one in total installed capacity and the center of the international wind industry, and added '''18'928 Megawatt''' within one year, accounting for more than 50 % of the world market for new wind turbines.
+* Major decrease in new installations can be observed in North America and the '''USA lost its number one position''' in total capacity to China.
+* Many Western European countries are showing stagnation, whereas there is strong growth in a number of Eastern European countries.
+* '''Germany''' keeps its number one position in Europe with '''27'215 Megawatt''', followed by Spain with 20'676 Megawatt.
+* The highest shares of wind power can be found in three European countries: '''Denmark (21.0%), Portugal (18.0 %) and Spain (16.0%)'''.
+* '''Asia''' accounted for the largest share of new installations '''(54.6%)''', followed by '''Europe (27.0%)''' and '''North America (16.7 %)'''.
+* '''Latin America (1.2%)''' and '''Africa (0.4%)''' still played only a marginal role in new installations.
+* Africa: North Africa represents still lion share of installed capacity, wind energy plays hardly a role yet in Sub-Sahara Africa.
+* Nuclear disaster in Japan and oil spill in Gulf of Mexico will have long-term impact on the prospects of wind energy. Governments need to urgently reinforce their wind energy policies.
-Vestas has an extensive portfolio of turbines which are each suited to specific conditions and requirements. Vestas wind turbines are checked and tested at their own test centres, after which the results are verified and certified by independent organisations.
+Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]
-Click on the product name to view the details:
+The regional breakdowns for the period 2009-2030 has been provided for the following three scenarios:
-<br>
+;# [[Regional Breakdown: Reference scenario (GWEO 2010)]]
-{|border="2" cellspacing="0" cellpadding="4" width="90%" align="center"
+;# [[Regional Breakdown: Moderate scenario (GWEO 2010)]]
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v52-850-kw V52-850 kW]</u></font>
+;# [[Regional Breakdown: Advanced scenario (GWEO 2010)]]
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v90-1.8/2.0-mw V90-1.8/2.0 MW]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v90-3.0-mw V90-3.0 MW]</u></font>
-|-
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v60-850-kw V60-850 kW]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v90-1.8/2.0-mw-gridstreamer%E2%84%A2 V90-1.8/2.0 MW GridStreamer™]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v90-3.0-mw-offshore V90-3.0 MW Offshore]</u></font>
-|-
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v82-1.65-mw V82-1.65 MW]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v100-1.8-mw V100-1.8 MW]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v112-3.0-mw V112-3.0 MW]</u></font>
-|-
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v80-2.0-mw V80-2.0 MW]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v100-1.8-mw-gridstreamer%E2%84%A2 V100-1.8 MW GridStreamer™]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v112-3.0-mw-offshore V112-3.0 MW Offshore]</u></font>
-|-
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v80-2.0-mw-gridstreamer%E2%84%A2 V80-2.0 MW GridStreamer™]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v100-2.6-mw V100-2.6 MW]</u></font>
-|align = "center"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v164-7.0-mw-offshore V164-7.0 MW Offshore]</u></font>
-|-
-|}
-<br>
+''Note: To know more about the '''Forecast Scenarios''' [http://dolcera.com/wiki/index.php?title=Forecast_Scenarios click here]''
-'''Services Portfolio'''
+==Country-wise Market Distribution==
-Vestas provides '''Active Output Management''' service programme, or '''AOM''' for short, to ensure the highest possible output at all times. A number of different AOM packages available based on the needs of the specific project, are listed below:
+* In 2010, the Chinese wind market represented more than half of the world market for new wind turbines adding '''18.9 GW''', which equals a market share of '''50.3%'''.
-<br>
+* A sharp decrease in new capacity happened in the USA whose share in new wind turbines fell down to '''14.9% (5.6 GW)''', after 25.9% or 9.9 GW in
-* '''AOM 1000:''' For customers seeking maximum flexibility. With no base fee, a number of Vestas services are offered on a pay-as-you-go basis.
+the year 2009.
-* '''AOM 2000:''' A low-cost way to reduce the risk of downtime. Turbine performance is sustained through regular maintenance, with the option of additional maintenance items.
+* '''Nine further countries''' could be seen as major markets, with turbine sales in a range '''between 0.5 and 1.5 GW''': Germany, Spain, India, United
-* '''AOM 3000:''' For customers willing to share the risk factor. A complete field service package including parts (apart from main components) and labor is accessible to customers with more risk tolerance. Turbine reliability is maximised through expert scheduled and unscheduled maintenance.
+Kingdom, France, Italy, Canada, Sweden and the Eastern European newcomer Romania.
-* '''AOM 4000:''' A complete package to maximise uptime and performance. A complete package including everything necessary (main components and material) to maximise uptime and performance. The service contract covers periods up to 10 years, suitable for customers who want the traditional time-based  availability guarantee – of up to 97%. These high expectations are formalised through liquidated damages and bonus clauses in the contract.
+* Further, '''12 markets''' for new turbines had a medium size '''between 100 and 500 MW''': Turkey, Poland, Portugal, Belgium, Brazil, Denmark, Japan, Bulgaria, Greece, Egypt, Ireland, and Mexico.
-* '''AOM 5000:''' A complete package to ensure minimised lost production. A complete package including everything necessary to maximise output but with further aligned incentives. An energy based availability guarantee is offered that aligns service and maintenance execution with low wind periods. The service contract covers periods up to 10 years, and energy based guarantees up to 97% (subject to site evaluation). These high expectations are formalised through liquidated damages and bonus clauses in the contract.
+* By end of 2010, '''20 countries''' had installations of '''more than 1 000 MW''', compared with 17 countries by end of 2009 and 11 countries byend of 2005.
-<br>
+* Worldwide, '''39 countries''' had wind farms with '''a capacity of 100 Megawatt''' or more installed, compared with 35 countries one year ago, and 24 countries five years ago.
+* The top five countries (USA, China, Germany, Spain and India) represented '''74.2%''' of the worldwide wind capacity, significantly more than 72.9 % in the year.
+* The '''USA and China''' together represented '''43.2%''' of the global wind capacity (up from 38.4 % in 2009).
+* The newcomer on the list of countries using wind power commercially is a Mediterranean country, '''Cyprus''', which for the first time installed a larger grid-connected wind farm, with 82 MW.
-===Geographic Presence===
+Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]
-Vestas has delivered 5,842 MW in 66 countries of the world across different continents:
+The top 10 countries by Total Installed Capacity for the year 2010, is illustrated in the chart below:
-;* Europe and Africa - 3,111 MW
+[[Image:Top_Installed_Countries.PNG|center|600px|thumb|Top Countries by Market Growth Rates, Source: [http://www.wwindea.org/home/images/stories/pdfs/worldwindenergyreport2010_s.pdf World Wind Energy Report, 2010]]]
-;* Americas - 1,482 MW
-;* Asia-Pacific - 1,249 MW
-<br>
+To view the Top 10 countries by different other parameters for the year 2010, click on the links below:
+;# [[Top 10 countries by Total New Installed Capacity]]
+;# [[Top 10 countries by Capacity per Capita (kW/cap)]]
+;# [[Top 10 countries by Capacity per Land Area (kW/sq. km)]]
+;# [[Top 10 countries by Capacity per GDP (kW/ million USD)]]
-The following table provides the detailed presence of Vestas in various countries:
+To view the '''[[Country-wise Installed Wind Power Capacity]]''' (MW) 2002-2010 (Source: World Wind Energy Association), '''[http://dolcera.com/wiki/index.php?title=Country-wise_Installed_Wind_Power_Capacity click here]'''
-<br>
+==Country Profiles==
-{|border="2" cellspacing="0" cellpadding="4" width="100%" align="center"
+===China===
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''Country/Region'''</font>
+<br>'''Wind Energy Outlook for China - 2011 & Beyond'''
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''Number'''</font>
+<br>Despite its rapid and seemingly unhampered expansion, the
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''MW'''</font>
+Chinese wind power sector continues to face significant
-|align = "center" rowspan = "23"|
+challenges, including issues surrounding grid access and
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''Country/Region'''</font>
+integration, reliability of turbines and a coherent strategy for
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''Number'''</font>
+developing China’s offshore wind resource. These issues will
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''MW'''</font>
+be prominent during discussions around the twelfth Five-Year
-|align = "center" rowspan = "23"|
+Plan, which will be passed in March 2011. According to the
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''Country/Region'''</font>
+draft plan, this is expected to reflect the Chinese
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''Number'''</font>
+government’s continuous and reinforced commitment to
-|align = "center" bgcolor = "#538ED5"|<font color="#181B24">'''MW'''</font>
+wind power development, with national wind energy targets
+of 90 GW for 2015 and 200 GW for 2020.
+For a detailed country profile of China please visit this [[China Wind Energy Profile Link]]
+===India===
+<br>'''Wind Energy Main market developments in 2010'''
+<br>Today the Indian market is emerging as one of the major
+manufacturing hubs for wind turbines in Asia. Currently,
+seventeen manufacturers have an annual production capacity
+of 7,500 MW. According to the WISE, the annual wind turbine
+manufacturing capacity in India is likely to exceed
+,000 MW by 2013.
+<br>The Indian market is expanding with the leading wind
+companies like Suzlon, Vestas, Enercon, RRB Energy and GE
+now being joined by new entrants like Gamesa, Siemens, and
+WinWinD, all vying for a greater market share. Suzlon, however,
+is still the market leader with a market share of over 50%.
+<br>The Indian wind industry has not been significantly affected
+by the financial and economic crises. Even in the face of a
+global slowdown, the Indian annual wind power market has
+grown by almost 68%. However, it needs to be pointed out
+that the strong growth in 2010 might have been stimulated
+by developers taking advantage of the accelerated
+depreciation before this option is phased out.
+For a detailed country profile of India please visit this [[India Wind Energy Profile Link]]
+==Market Share Analysis==
+===Global Market Share===
+* Vestas leads the Global Market in the 2010 with a 12% market share according to Make Consulting, while BTM Consulting reports it to have a 14.8% market share.
+* According to Make Consulting, the global market share of Vestas has decreased from 19% in 2008, to 14.5% in 2009, to 12% in 2010.
+* According to BTM Consulting, the global market share of Vestas has changed from 19% in 2008, to 12% in 2009, to 14.8% in 2010.
+* According to Make Consulting, the global market share of GE Energy has decreased from 18% in 2008, to 12.5% in 2009, to 10% in 2010.
+* The market share of world no. 2 Sinovel, has been constantly increasing, from 5% in 2008 , to 9.3% in 2009, to 11% in 2010
+* The top 5 companies have been occupying more than half of the Global Market Share from 2008 to 2010
+Source: [http://www.make-consulting.com Make Consulting], [http://www.btmgcs.com/ BTM Global Consulting]
+The chart given below illustrates the Global Market Share Comparison of Major Wind Energy Companies for the period 2008-2010, as provided by two different agencies, Make Consulting and BTM Consulting:
+[[Image:Market_Share_Comparison.JPG|center|1080px|thumb|Global Market Share Comparison of Major Companies for the period 2008-2010
+, Source: [http://www.make-consulting.com Make Consulting], [http://www.btmgcs.com/ BTM Global Consulting]]]
+===Market Share - Top 10 Markets===
+* While Vestas is the Global Leader, it is the leader in only one of Top 10 markets, which is 10<sup>th</sup> placed Sweden
+* But, Vestas is ranked 2<sup>nd</sup> in 5 of Top 10 markets
+* Sinovel, ranked 2<sup>nd</sup> globally, features only once in the Top 3 Companies list in the Top 10 markets, but scores globally because it leads the largest market China
+* The table given below illustrates the Top 3 players in Top 10 Wind Energy Markets of the world:
+{|border="2" cellspacing="0" cellpadding="4" width="50%" align="center"
+|bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Market'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''MW'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''No. 1'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''No. 2'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''No. 3'''</font>
 |-
-|Argentina
+|bgcolor = "#DBE5F1"|'''China'''
-|align = "right"|19
+|align = "center" bgcolor = "#DBE5F1"|18928
-|align = "right"|11,8
+|align = "center" bgcolor = "#DBE5F1"|Sinovel
-|Germany
+|align = "center" bgcolor = "#DBE5F1"|Goldwind
-|align = "right"|5,879
+|align = "center" bgcolor = "#DBE5F1"|Dongfang
-|align = "right"|7,405.13
-|Norway
-|align = "right"|27
-|align = "right"|15,88
 |-
-|Aruba
+|bgcolor = "#DBE5F1"|'''USA'''
-|align = "right"|10
+|align = "center" bgcolor = "#DBE5F1"|5115
-|align = "right"|30
+|align = "center" bgcolor = "#DBE5F1"|GE Energy
-|Greece
+|align = "center" bgcolor = "#DBE5F1"|Vestas
-|align = "right"|698
+|align = "center" bgcolor = "#DBE5F1"|Siemens
-|align = "right"|944.32
-|Peru
-|align = "right"|1
-|align = "right"|0,25
 |-
-|Australia
+|bgcolor = "#DBE5F1"|'''India'''
-|align = "right"|554
+|align = "center" bgcolor = "#DBE5F1"|2139
-|align = "right"|1060,75
+|align = "center" bgcolor = "#DBE5F1"|Suzlon
-|Hungary
+|align = "center" bgcolor = "#DBE5F1"|Enercon
-|align = "right"|49
+|align = "center" bgcolor = "#DBE5F1"|Vestas
-|align = "right"|105.45
-|Philippines
-|align = "right"|20
-|align = "right"|33
 |-
-|Austria
+|bgcolor = "#DBE5F1"|'''Germany'''
-|align = "right"|224
+|align = "center" bgcolor = "#DBE5F1"|1551
-|align = "right"|386,56
+|align = "center" bgcolor = "#DBE5F1"|Enercon
-|India
+|align = "center" bgcolor = "#DBE5F1"|Vestas
-|align = "right"|4,231
+|align = "center" bgcolor = "#DBE5F1"|Suzlon
-|align = "right"|2,434.59
-|Poland
-|align = "right"|204
-|align = "right"|422,625
 |-
-|Azerbaijan
+|bgcolor = "#DBE5F1"|'''UK'''
-|align = "right"|2
+|align = "center" bgcolor = "#DBE5F1"|1522
-|align = "right"|1,7
+|align = "center" bgcolor = "#DBE5F1"|Siemens
-|Iran
+|align = "center" bgcolor = "#DBE5F1"|Vestas
-|align = "right"|37
+|align = "center" bgcolor = "#DBE5F1"|Gamesa
-|align = "right"|16,38
-|Portugal
-|align = "right"|347
-|align = "right"|628,9
 |-
-|Belgium
+|bgcolor = "#DBE5F1"|'''Spain'''
-|align = "right"|120
+|align = "center" bgcolor = "#DBE5F1"|1516
-|align = "right"|274,67
+|align = "center" bgcolor = "#DBE5F1"|Gamesa
-|Israel
+|align = "center" bgcolor = "#DBE5F1"|Vestas
-|align = "right"|3
+|align = "center" bgcolor = "#DBE5F1"|GE Energy
-|align = "right"|0,455
-|Republic of Ireland
-|align = "right"|546
-|align = "right"|555,90
 |-
-|Brazil
+|bgcolor = "#DBE5F1"|'''France'''
-|align = "right"|125
+|align = "center" bgcolor = "#DBE5F1"|1186
-|align = "right"|204,43
+|align = "center" bgcolor = "#DBE5F1"|Enercon
-|Italy
+|align = "center" bgcolor = "#DBE5F1"|Suzlon
-|align = "right"|2,235
+|align = "center" bgcolor = "#DBE5F1"|Vestas
-|align = "right"|2,485.35
-|Romania
-|align = "right"|98
-|align = "right"|271,66
 |-
-|Bulgaria
+|bgcolor = "#DBE5F1"|'''Italy'''
-|align = "right"|110
+|align = "center" bgcolor = "#DBE5F1"|948
-|align = "right"|292,2
+|align = "center" bgcolor = "#DBE5F1"|Gamesa
-|Jamaica
+|align = "center" bgcolor = "#DBE5F1"|Vestas
-|align = "right"|33
+|align = "center" bgcolor = "#DBE5F1"|Suzlon
-|align = "right"|38.93
-|Russia
-|align = "right"|3
-|align = "right"|1,1
 |-
-|Canada
+|bgcolor = "#DBE5F1"|'''Canada'''
-|align = "right"|1,021
+|align = "center" bgcolor = "#DBE5F1"|690
-|align = "right"|1683,10
+|align = "center" bgcolor = "#DBE5F1"|Siemens
-|Japan
+|align = "center" bgcolor = "#DBE5F1"|GE Energy
-|align = "right"|379
+|align = "center" bgcolor = "#DBE5F1"|Enercon
-|align = "right"|509,98
-|Slovakia
-|align = "right"|4
-|align = "right"|2,64
 |-
-|Cape Verde
+|bgcolor = "#DBE5F1"|'''Sweeden'''
-|align = "right"|9
+|align = "center" bgcolor = "#DBE5F1"|604
-|align = "right"|2,55
+|align = "center" bgcolor = "#DBE5F1"|Vestas
-|Jordan
+|align = "center" bgcolor = "#DBE5F1"|Enercon
-|align = "right"|5
+|align = "center" bgcolor = "#DBE5F1"|Siemens
-|align = "right"|1,125
-|South Africa
-|align = "right"|3
-|align = "right"|4.21
 |-
-|Caribbean Islands
+|align = "center" bgcolor = "#DBE5F1" colspan = "5"|''Source: BTM Consult - part of Navigant Consulting - March 2011''
-|align = "right"|2
-|align = "right"|0,2
-|Kenya
-|align = "right"|6
-|align = "right"|5,1
-|South Korea
-|align = "right"|104
-|align = "right"|166,485
 |-
-|Chile
+|}<br clear="all">
-|align = "right"|64
-|align = "right"|116,68
-|Latvia
-|align = "right"|1
-|align = "right"|0,85
-|Spain
-|align = "right"|2,696
-|align = "right"|3,587.86
-|-
-|China
-|align = "right"|2,615
-|align = "right"|2,964,05
-|Lithuania
-|align = "right"|6
-|align = "right"|18
-|Sri Lanka
-|align = "right"|5
-|align = "right"|3
-|-
-|Costa Rica
-|align = "right"|71
-|align = "right"|50,55
-|Luxemburg
-|align = "right"|13
-|align = "right"|9,4
-|Sweden
-|align = "right"|1,012
-|align = "right"|1,117.63
-|-
-|Croatia
-|align = "right"|21
-|align = "right"|47,95
-|Malaysia
-|align = "right"|1
-|align = "right"|0,15
-|Switzerland
-|align = "right"|17
-|align = "right"|24,56
-|-
-|Cuba
-|align = "right"|4
-|align = "right"|3,8
-|Mauritius
-|align = "right"|1
-|align = "right"|0,1
-|Taiwan
-|align = "right"|50
-|align = "right"|86,1
-|-
-|Cyprus
-|align = "right"|41
-|align = "right"|82
-|Mexico
-|align = "right"|56
-|align = "right"|103.13
-|Thailand
-|align = "right"|1
-|align = "right"|0,15
-|-
-|Czech Republic
-|align = "right"|44
-|align = "right"|64,47
-|Morocco
-|align = "right"|84
-|align = "right"|50,4
-|Turkey
-|align = "right"|139
-|align = "right"|375.91
-|-
-|Denmark
-|align = "right"|4,934
-|align = "right"|2,564.56
-|Netherlands
-|align = "right"|1,280
-|align = "right"|1,506.35
-|USA
-|align = "right"|11,026
-|align = "right"|8,116.31
-|-
-|Egypt
-|align = "right"|124
-|align = "right"|79,075
-|New Caledonia
-|align = "right"|20
-|align = "right"|4,5
-|United Arabian Emirates
-|align = "right"|1
-|align = "right"|0,85
-|-
-|Finland
-|align = "right"|38
-|align = "right"|18,45
-|New Zealand
-|align = "right"|219
-|align = "right"|309,96
-|United Kingdom
-|align = "right"|1,137
-|align = "right"|1,674.95
-|-
-|France
-|align = "right"|586
-|align = "right"|1,104.95
-|North Korea
-|align = "right"|2
-|align = "right"|0,18
-|Uruguay
-|align = "right"|15
-|align = "right"|30
-|-
-|}
-<br>
+Source: [http://www.btm.dk/reports/world+market+update+2010 BTM Consult]
-===Organizational Structure===
+==Company Profiles==
-* Vestas has '''14 business units''', all reporting directly to the Executive Management.
+# '''[[Vestas Wind Systems A/S]]'''
-* The presidents of the individual business units are responsible for the general day-to-day management of their respective areas of responsibility.
+# '''[[Suzlon Energy]]'''
-* In order to improve the company’s competitive strength in the years ahead, Vestas has aligned the Group’s business units to ensure consistency of structure, departments, job descriptions and work procedures across the Group.
-* The changes increase transparency, ensure a clear distribution of responsibilities, reduce Vestas’ response time and lower the cost level.
-<br>
-[[Image:Vestas21.png|center|thumb|1000 px]]
-<br>
-To view the details of an individual business unit, please click on the business unit name:
-<br>
-{|border="2" cellspacing="0" cellpadding="4" width="65%" align="center"
+==Major Wind Turbine Suppliers==
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-americas Vestas Americas]'''</u></font>
+{|border="2" cellspacing="0" cellpadding="4" width="50%" align="center"
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-people---culture Vestas People & Culture]'''</u></font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Turbine maker'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Rotor blades'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Gear boxes'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Generators'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Towers'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Controllers'''</font>
 |-
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-asia-pacific Vestas Asia Pacific]'''</u></font>
+|bgcolor = "#DBE5F1"|Vestas
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-technology-r-d Vestas Technology R&D]'''</u></font>
+|bgcolor = "#DBE5F1"|Vestas, LM
+|bgcolor = "#DBE5F1"|Bosch Rexroth, Hansen, Wingery, Moventas
+|bgcolor = "#DBE5F1"| Weier, Elin, ABB, LeroySomer
+|bgcolor = "#DBE5F1"| Vestas, NEG, DMI
+|bgcolor = "#DBE5F1"|Cotas (Vestas),<br>NEG (Dancontrol)
 |-
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-central-europe Vestas Central Europe]'''</u></font>
+|bgcolor = "#DBE5F1"|GE energy
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-spare-parts---repair Vestas Spare Parts & Repair]'''</u></font>
+|bgcolor = "#DBE5F1"|LM, Tecsis
+|bgcolor = "#DBE5F1"|Wingery, Bosch, Rexroth, Eickhoff, GE
+|bgcolor = "#DBE5F1"|Loher, GE
+|bgcolor = "#DBE5F1"|DMI, Omnical, SIAG
+|bgcolor = "#DBE5F1"|GE
 |-
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-china Vestas China]'''</u></font>
+|bgcolor = "#DBE5F1"|Gamesa
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-blades Vestas Blades]'''</u></font>
+|bgcolor = "#DBE5F1"|Gamesa, LM
+|bgcolor = "#DBE5F1"| Echesa (Gamesa), Winergy, Hansen
+|bgcolor = "#DBE5F1"|Indar (Gamesa), Cantarey
+|bgcolor = "#DBE5F1"|Gamesa
+|bgcolor = "#DBE5F1"| Ingelectric (Gamesa)
 |-
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-mediterranean Vestas Mediterranean]'''</u></font>
+|bgcolor = "#DBE5F1"|Enercon
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-control-systems Vestas Control Systems]'''</u></font>
+|bgcolor = "#DBE5F1"|Enercon
+|bgcolor = "#DBE5F1"|Direct drive
+|bgcolor = "#DBE5F1"|Enercon
+|bgcolor = "#DBE5F1"|KGW, SAM
+|bgcolor = "#DBE5F1"|Enercon
 |-
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-northern-europe Vestas Northern Europe]'''</u></font>
+|bgcolor = "#DBE5F1"| Siemens<br>wind
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-nacelles Vestas Nacelles]'''</u></font>
+|bgcolor = "#DBE5F1"|Siemens, LM
+|bgcolor = "#DBE5F1"|Winergy
+|bgcolor = "#DBE5F1"|ABB
+|bgcolor = "#DBE5F1"|Roug, KGW
+|bgcolor = "#DBE5F1"| Siemens, KK Electronic
 |-
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-offshore Vestas Offshore]'''</u></font>
+|bgcolor = "#DBE5F1"|Suzlon
-|align = "center"|<font color="#0000FF"><u>'''[http://www.vestas.com/en/about-vestas/company-structure/vestas-towers Vestas Towers]'''</u></font>
+|bgcolor = "#DBE5F1"|Suzlon
+|bgcolor = "#DBE5F1"|Hansen, Winergy
+|bgcolor = "#DBE5F1"| Suzlon,<br>Siemens
+|bgcolor = "#DBE5F1"|Suzlon
+|bgcolor = "#DBE5F1"| Suzlon, Mita Teknik
 |-
-|}
+|bgcolor = "#DBE5F1"|Repower
+|bgcolor = "#DBE5F1"|LM
-<br>
+|bgcolor = "#DBE5F1"| Winergy, Renk, Eickhoff
+|bgcolor = "#DBE5F1"|N/A
-===Employee Distribution===
+|bgcolor = "#DBE5F1"|N/A
+|bgcolor = "#DBE5F1"| Mita Teknik, ReGuard
-* The 23,252 employees have an average seniority of 3 years and 11 months.
-* Key priority areas identified are training and, in particular, retention of new and existing employees as around 22% of the employees are having less than one year's seniority.
-* Due to enhanced efficiency, improved turbine performance and economies of scale, going forward, Vestas expects its headcount to rise at a lower rate than its business volume.
-<br>
-The following table provides the employee distribution of Vestas across geographies and divisions:
-<br><br>
-{|border="2" cellspacing="0" cellpadding="4" width="75%" align="center"
-|align = "center"|'''Region/Department'''
-|align = "center" bgcolor = "#538ED5"|'''Production'''
-|align = "center" bgcolor = "#538ED5"|'''Sales'''
-|align = "center" bgcolor = "#538ED5"|'''R&D'''
-|align = "center" bgcolor = "#538ED5"|'''Others'''
-|align = "center" bgcolor = "#538ED5"|'''Total'''
 |-
-|bgcolor = "#538ED5"|'''Europe & Africa'''
+|bgcolor = "#DBE5F1"|Nordex
-|align = "center"|7,579
+|bgcolor = "#DBE5F1"|Nordex
-|align = "center"|4,509
+|bgcolor = "#DBE5F1"| Winergy, Eickhoff, Maag
-|align = "center"|1,515
+|bgcolor = "#DBE5F1"|Loher
-|align = "center"|1,522
+|bgcolor = "#DBE5F1"| Nordex, Omnical
-|align = "center"|'''15,125'''
+|bgcolor = "#DBE5F1"| Nordex, Mita Teknik
 |-
-|bgcolor = "#538ED5"|'''Americas'''
+|align = "center" bgcolor = "#DBE5F1" colspan = "6"|''Source: BTM Consult''
-|align = "center"|1,479
-|align = "center"|1,278
-|align = "center"|189
-|align = "center"|0
-|align = "center"|'''2,946'''
 |-
-|bgcolor = "#538ED5"|'''Asia-Pacific'''
+|}<br clear="all">
-|align = "center"|2,475
-|align = "center"|2,004
+==Products of Top Companies==
-|align = "center"|573
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
-|align = "center"|129
+|align = "center" bgcolor = "#4F81BD" width=”42”|<font color="#FFFFFF">'''S.No.'''</font>
-|align = "center"|'''5,181'''
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Company'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Product'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Specifications'''</font>
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|1
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v80-2.0-mw.aspx#/vestas-univers Vestas]</u></font>
+|bgcolor = "#DCE6F1"|V80
+|bgcolor = "#DCE6F1"|'''Rated Power: '''2.0 MW,  '''Frequency:''' 50 Hz/60 Hz, '''Number of Poles:''' 4-pole, '''Operating Temperature: -'''30°C to 40°
+|- valign="top"
+|align = "center"|2
+|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v80-2.0-mw.aspx#/vestas-univers Vestas]</u></font>
+|V90
+|'''Rated Power:''' 1.8/2.0 MW, '''Frequency :''' 50 Hz/60 Hz, '''Number of Poles :''' 4-pole(50 Hz)/6-pole(60 Hz), '''Operating Temperature: -'''30°C to 40°
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|3
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.vestas.com/en/wind-power-plants/procurement/turbine-overview/v80-2.0-mw.aspx#/vestas-univers Vestas]</u></font>
+|bgcolor = "#DCE6F1"|V90 Offshore
+|bgcolor = "#DCE6F1"|'''Rated Power:''' 3.0 MW, '''Frequency:''' 50 Hz/60 Hz, '''Number of Poles:''' 4-pole, '''Operating Temperature: '''-30°C to 40°
+|- valign="top"
+|align = "center"|4
+|<font color="#0000FF"><u>[http://www.china-windturbine.com/news/doubly_wind_turbines.htm North Heavy Company]</u></font>
+|2 MW DFIG
+|'''Rated Power:''' 2.0 MW, '''Rated Voltage:''' 690V, '''Rated Current:''' 1670A, '''Frequency:''' 50Hz, '''Number of Poles :''' 4-pole,  '''Rotor Rated Voltage:''' 1840V, '''Rotor Rated Current''' 670A, '''Rated Speed:''' 1660rpm;''' Power Speed Range: '''520-1950 rpm, '''Insulation Class:''' H, '''Protection Class:''' IP54,  '''Motor Temperature Rise''' =<nowiki><</nowiki>95K
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|5
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://docs.google.com/viewer?a=v&q=cache:X9KReq0YEigJ:www.iberdrolarenewables.us/bluecreek/docs/primary/03-Appendices/_Q-Brochure-of-G-90-Turbine/Brochure-G-90-Turbine.pdf+gamesa+g90&hl=en&pid=bl&srcid=ADGEESgldaLogi1i5Pg71zE-FO_AMqbeKL5wJiA8LVklgq5ev2in Gamesa]</u></font>
+|bgcolor = "#DCE6F1"|G90
+|bgcolor = "#DCE6F1"|'''Rated Voltage:''' 690 V,  '''Frequency:''' 50 Hz,  '''Number of Poles:''' 4,  '''Rotational Speed:''' 900:1,900 rpm (rated 1,680 rpm) (50Hz); '''Rated Stator Current: '''1,500 A @ 690 V, '''Protection Class:''' IP 54, '''Power Factor(standard):'''  0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, '''Power Factor(Optional):''' 0.95 CAP - 0.95 IND throughout the power range
+|- valign="top"
+|align = "center"|6
+|<font color="#0000FF"><u>[http://www.nordex-online.com/en/products-services/wind-turbines/n100-25-mw Nordex]</u></font>
+| N80
+|'''Rated Power:''' 2.5 MW, '''Rated Voltage:''' 690V, '''Frequency:''' 50/60Hz, '''Cooling Systems:''' liquid/air
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|7
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.nordex-online.com/en/products-services/wind-turbines/n100-25-mw Nordex]</u></font>
+|bgcolor = "#DCE6F1"| N90
+|bgcolor = "#DCE6F1"|'''Rated Power:''' 2.5 MW, '''Rated Voltage: '''690V,''' Frequency: '''50/60Hz,''' Cooling Systems: '''liquid/air
+|- valign="top"
+|align = "center"|8
+|<font color="#0000FF"><u>[http://www.nordex-online.com/en/products-services/wind-turbines/n100-25-mw Nordex]</u></font>
+|N100
+|'''Rated Power:''' 2.4 MW, '''Rated Voltage: '''690V, '''Frequency: '''50/60Hz, '''Cooling Systems: '''liquid/air
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|9
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.nordex-online.com/en/products-services/wind-turbines/n100-25-mw Nordex]</u></font>
+|bgcolor = "#DCE6F1"| N117
+|bgcolor = "#DCE6F1"|'''Rated Power:''' 2.5 MW, '''Rated Voltage: '''690V, '''Frequency: '''50/60Hz, '''Cooling Systems: '''liquid/air
+|- valign="top"
+|align = "center"|10
+|<font color="#0000FF"><u>[http://www.converteam.com/majic/pageServer/1704040148/en/index.html Converteam]</u></font>
+|DFIG
+|NA
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|11
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://geoho.en.alibaba.com/product/252321923-0/1_5MW_doubly_fed_asynchronous_generator.html Xian Geoho Energy Technology]</u></font>
+|bgcolor = "#DCE6F1"|1.5MW DFIG
+|bgcolor = "#DCE6F1"|'''Rated Power:''' 1550KW,  '''Rated Voltage: '''690V, '''Rated Speed: '''1755 r/min, '''Speed Range: '''975<nowiki>~</nowiki>1970 r/min, '''Number of Poles: '''4-pole, '''Stator Rated Voltage: '''690V±10%, '''Stator Rated Current: '''1115A; '''Rotor Rated Voltage: '''320V, '''Rotor Rated Current: '''430A, '''Winding Connection: '''Y / Y, '''Power Factor: '''0.95(Lead) <nowiki>~</nowiki> 0.95Lag,''' Protection Class: '''IP54, '''Insulation Class: '''H, '''Work Mode: '''S1, '''Installation ModeI: '''M B3, '''Cooling Mode: '''Air cooling,  '''Weight: '''6950kg
+|- valign="top"
+|align = "center"|12
+|<font color="#0000FF"><u>[http://www.tecowestinghouse.com/products/custom_engineered/DF_WR_ind_generator.html Tecowestinghouse]</u></font>
+|TW450XX (0.5-1 KW)
+|'''Rated Power:''' 0.5 -1 KW, '''Rated Voltage: '''460/ 575/ 690 V, '''Frequency: '''50/ 60 Hz, '''Number of Poles: '''4/6,''' Ambient Temp.(°C): -'''40 to 50, '''Speed Range (% of Synch. Speed): '''68% to 134%,  '''Power Factor (Leading): -'''0.90 to <nowiki>+</nowiki>0.90 , '''Insulation Class: '''H/F, '''Efficiency: '''<nowiki>></nowiki>= 96%
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|13
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.tecowestinghouse.com/products/custom_engineered/DF_WR_ind_generator.html Tecowestinghouse]</u></font>
+|bgcolor = "#DCE6F1"|TW500XX (1-2 KW)
+|bgcolor = "#DCE6F1"|'''Rated Power:''' 1-2 kW,''' Rated Voltage:''' 460/ 575/ 690 V, '''Frequency:''' 50/ 60 Hz, '''Number of Poles:''' 4/6, Ambient Temp.(°C): -40 to 50; '''Speed Range (% of Synch. Speed):''' 68 to 134%, '''Power Factor(Leading): -'''0.90 to <nowiki>+</nowiki>0.90, '''Insulation Class: '''H/F, '''Efficiency:''' <nowiki>></nowiki>= 96%
+|- valign="top"
+|align = "center"|14
+|<font color="#0000FF"><u>[http://www.tecowestinghouse.com/products/custom_engineered/DF_WR_ind_generator.html Tecowestinghouse]</u></font>
+|TW560XX (2-3 KW)
+|'''Rated Power: '''2-3kW, '''Rated Voltage: '''460/ 575/ 690 V, '''Frequency: '''50/ 60 Hz, '''Number of Poles: '''4/6, '''Ambient Temp(°C): ''' -40 to 50, '''Speed Range(% of Synch. Speed)''':''' '''68 to 134%, '''Power Factor(Leading):''' -0.90 to <nowiki>+</nowiki>0.90, '''Insulation Class: '''H/F, '''Efficiency:''' <nowiki>></nowiki>= 96%.
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|15
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.acciona-na.com/About-Us/Our-Projects/U-S-/West-Branch-Wind-Turbine-Generator-Assembly-Plant.aspx Acciona]</u></font>
+|bgcolor = "#DCE6F1"|AW1500
+|bgcolor = "#DCE6F1"|'''Rated Power:''' 1.5MW, '''Rated Voltage: '''690 V, '''Frequency: '''50 Hz, '''Number of Poles: '''4,  '''Rotational Speed: '''900:1,900 rpm(rated 1,680 rpm) (50Hz), '''Rated Stator Current: '''1,500 A @ 690 V, '''Protection Class: '''IP54, '''Power Factor(standard): '''0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, '''Power factor(optional):''' 0.95 CAP - 0.95 IND throughout the power range
+|- valign="top"
+|align = "center"|16
+|<font color="#0000FF"><u>[http://www.acciona-na.com/About-Us/Our-Projects/U-S-/West-Branch-Wind-Turbine-Generator-Assembly-Plant.aspx Acciona]</u></font>
+|AW3000
+|'''Rated Power:''' 3.0MW, '''Rated Voltage: ''' 690 V, '''Frequency: '''50 Hz, '''Number of Poles: '''4, '''Rotational Speed: '''900:1,900 rpm(rated 1,680 rpm) (50Hz), '''Rated Stator Current: '''1,500 A @ 690 V, '''Protection Class: '''IP54, '''Power Factor(standard): '''0.98 CAP - 0.96 IND at partial loads and 1 at nominal power, '''Power Factor (optional):''' 0.95 CAP - 0.95 IND throughout the power range
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|17
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://gepower.com/businesses/ge_wind_energy/en/index.htm General Electric]</u></font>
+|bgcolor = "#DCE6F1"|GE 1.5/2.5MW
+|bgcolor = "#DCE6F1"|'''Rated Power:''' 1.5/2.5 MW, '''Frequency(Hz): '''50/60
 |-
-|bgcolor = "#538ED5"|'''Total'''
+|}
-|align = "center"|'''11,533'''
-|align = "center"|'''7,791'''
-|align = "center"|'''2,277'''
-|align = "center"|'''1,651'''
-|align = "center"|'''23,252'''
-|-
-|}
-<br>
+= IP Search & Analysis =
+== Doubly-fed Induction Generator: Search Strategy ==
+The present study on the IP activity in the area of horizontal axis wind turbines with focus on '''''Doubly-fed Induction Generator (DFIG)''''' is based on a search conducted on Thomson Innovation.
+===Control Patents===
-A comparative graph of emplyee distribution by function for 2006 and 2010 is given below:
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
-<br>
+|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
-[[Image:Vestas3.jpg|center|thumb|700*300 px]]
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Patent/Publication No.'''</font>
-<br>
+|align = "center" bgcolor = "#4F81BD" width="15%"|<font color="#FFFFFF">'''Publication Date<br>'''(mm/dd/yyyy)</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Assignee/Applicant'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Title'''</font>
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|1
+|align = "center" bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6278211.PN.&OS=PN/6278211&RS=PN/6278211 US6278211]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|08/02/01
+|bgcolor = "#DCE6F1"|Sweo Edwin
+|bgcolor = "#DCE6F1"|Brush-less doubly-fed induction machines employing dual cage rotors
+|- valign="top"
+|align = "center"|2
+|align = "center"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6954004.PN.&OS=PN/6954004&RS=PN/6954004 US6954004]</u></font>
+|align = "center"|10/11/05
+|Spellman High Voltage Electron
+|Doubly fed induction machine
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|3
+|align = "center" bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7411309.PN.&OS=PN/7411309&RS=PN/7411309 US7411309]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|08/12/08
+|bgcolor = "#DCE6F1"|Xantrex Technology
+|bgcolor = "#DCE6F1"|Control system for doubly fed induction generator
+|- valign="top"
+|align = "center"|4
+|align = "center"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7485980.PN.&OS=PN/7485980&RS=PN/7485980 US7485980]</u></font>
+|align = "center"|02/03/09
+|Hitachi
+|Power converter for doubly-fed power generator system
+|- valign="top"
+|align = "center" bgcolor = "#DCE6F1"|5
+|align = "center" bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7800243.PN.&OS=PN/7800243&RS=PN/7800243 US7800243]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|09/21/10
+|bgcolor = "#DCE6F1"|Vestas Wind Systems
+|bgcolor = "#DCE6F1"|Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed
+|- valign="top"
+|align = "center"|6
+|align = "center"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7830127.PN.&OS=PN/7830127&RS=PN/7830127 US7830127]</u></font>
+|align = "center"|11/09/10
+|Wind to Power System
+|Doubly-controlled asynchronous generator
+|-
+|}
-===Mergers & Acquisitions===
+===Patent Classes===
-{|border="2" cellspacing="0" cellpadding="4" width="75%" align="center"
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
-|align = "center" bgcolor = "#538ED5"|'''Acquisitions'''
+|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
-|align = "center" bgcolor = "#538ED5"|'''Stakes'''
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Class No.'''</font>
-|align = "center" bgcolor = "#538ED5"|'''Divestitures'''
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Class Type'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Definition'''</font>
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|1
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.wipo.int/ipcpub/#refresh=page&notion=scheme&version=20110101&symbol=F03D0009000000 F03D9/00 ]</u></font>
+|bgcolor = "#DCE6F1"|IPC
+|bgcolor = "#DCE6F1"|Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for / Wind motors / '''Adaptations of wind motors for special use; Combination of wind motors with apparatus driven thereby (aspects predominantly concerning driven apparatus) '''
+|-valign="top"
+|align = "center"|2
+|<font color="#0000FF"><u>[http://v3.espacenet.com/eclasrch?classification=ecla&locale=en_EP&ECLA=f03d9/00c F03D9/00C ]</u></font>
+|ECLA
+|Machines or engines for liquids; wind, spring, or weight motors; producing mechanical power or a reactive propulsive thrust, not otherwise provided for / Wind motors / Adaptations of wind motors for special use; Combination of wind motors with apparatus driven thereby (aspects predominantly concerning driven apparatus) /''' The apparatus being an electrical generator '''
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|3
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.wipo.int/ipcpub/#&refresh=page&notion=scheme&version=20110101&symbol=H02J0003380000 H02J3/38 ]</u></font>
+|bgcolor = "#DCE6F1"|IPC
+|bgcolor = "#DCE6F1"|Generation, conversion, or distribution of electric power / Circuit arrangements or systems for supplying or distributing electric power; systems for storing electric energy / Circuit arrangements for ac mains or ac distribution networks / '''Arrangements for parallely feeding a single network by two or more generators, converters or transformers '''
+|-valign="top"
+|align = "center"|4
+|<font color="#0000FF"><u>[http://www.wipo.int/ipcpub/#refresh=page&notion=scheme&version=20110101&symbol=H02K0017420000 H02K17/42 ]
+</u></font>
+|IPC
+|Generation, conversion, or distribution of electric power / Dynamo-electric machines / Asynchronous induction motors; Asynchronous induction generators / '''Asynchronous induction generators '''
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|5
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.wipo.int/ipcpub/#refresh=page&notion=scheme&version=20110101&symbol=H02P0009000000 H02P9/00 ]</u></font>
+|bgcolor = "#DCE6F1"|IPC
+|bgcolor = "#DCE6F1"|Generation, conversion, or distribution of electric power / Control or regulation of electric motors, generators, or dynamo-electric converters; controlling transformers, reactors or choke coils /''' Arrangements for controlling electric generators for the purpose of obtaining a desired output '''
+|-valign="top"
+|align = "center"|6
+|<font color="#0000FF"><u>[http://www.uspto.gov/web/patents/classification/uspc290/sched290.htm#C290S044000 290/044]</u></font>
+|USPC
+|Prime-mover dynamo plants / electric control / Fluid-current motors / '''Wind '''
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|7
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.uspto.gov/web/patents/classification/uspc290/sched290.htm#C290S055000 290/055]</u></font>
+|bgcolor = "#DCE6F1"|USPC
+|bgcolor = "#DCE6F1"|Prime-mover dynamo plants / Fluid-current motors / '''Wind'''
+|-valign="top"
+|align = "center"|8
+|<font color="#0000FF"><u>[http://www.uspto.gov/web/patents/classification/uspc318/sched318.htm#C318S727000 318/727]</u></font>
+|USPC
+|Electricity: motive power systems / '''Induction motor systems '''
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|9
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.uspto.gov/web/patents/classification/uspc322/sched322.htm#C322S047000 322/047]</u></font>
+|bgcolor = "#DCE6F1"|USPC
+|bgcolor = "#DCE6F1"|Electricity: single generator systems / Generator control / '''Induction generator '''
 |-
-|<br>
+|}
-* WEIER Electric-Certain Assets (Oct 2005)<br>
-* NEG Micon A/S (Mar 2004)<br>
-* Windcast Group A/S (Oct 2002)<br><br>
-|
-* C&C Energy Srl (Jan 2011)<br>
-* Gamesa Eolica SA (GE) (July 2001)<br>
-* Cotas Computer Technology A/S (April 1999)
-|
-* Volund Staalskorstene (Sep 1995)<br>
-* Volund Varmeteknik (Aug 1995)
-|-
-|}
-<br>
+===Concept Table===
-'''Sources: Analyst Reports'''
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
-<br>
+|align = "center" bgcolor = "#4F81BD" rowspan = "2" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Concept 1'''</font>
-===Order Book===
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Concept 2'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Concept 3'''</font>
-[[Image:Vestas5.jpg|center|thumb|600*150 px]]
-<br>
-The following table provides the Order Book summary for Vestas from 2007 to 2010:
-<br>
-{|border="2" cellspacing="0" cellpadding="4" width="80%" align="center"
-|align = "center" bgcolor = "#538ED5"|'''Particulars'''
-|align = "center" bgcolor = "#538ED5"|'''2010'''
-|align = "center" bgcolor = "#538ED5"|'''2009'''
-|align = "center" bgcolor = "#538ED5"|'''2008'''
-|align = "center" bgcolor = "#538ED5"|'''2007'''
 |-
-|align = "center"|Order Value (bnEUR)
+|align = "center" bgcolor = "#95B3D7"|'''Doubly Fed'''
-|align = "center"|8.6
+|align = "center" bgcolor = "#95B3D7"|'''Induction'''
-|align = "center"|3.2
+|align = "center" bgcolor = "#95B3D7"|'''Generator'''
-|align = "center"|6.4
-|align = "center"|5.5
 |-
-|align = "center"|Order intake (MW)
+|align = "center" bgcolor = "#DCE6F1"|1
-|align = "center"|8,673
+|bgcolor = "#DCE6F1"|doubly fed
-|align = "center"|3,072
+|bgcolor = "#DCE6F1"|induction
-|align = "center"|6,019
+|bgcolor = "#DCE6F1"|generator
-|align = "center"|5,613
 |-
-|align = "center"|Produced and shipped (MW)
+|align = "center"|2
-|align = "center"|4,057
+|double output
-|align = "center"|6,131
+|asynchronous
-|align = "center"|6,160
+|machines
-|align = "center"|4,974
 |-
-|align = "center"|Deliveries (MW)
+|align = "center" bgcolor = "#DCE6F1"|3
-|align = "center"|5,842
+|bgcolor = "#DCE6F1"|dual fed
-|align = "center"|4,764
+|bgcolor = "#DCE6F1"|
-|align = "center"|5,580
+|bgcolor = "#DCE6F1"|systems
-|align = "center"|4,502
 |-
-|}
+|align = "center"|4
+|dual feed
+|
+|
+|-
+|align = "center" bgcolor = "#DCE6F1"|5
+|bgcolor = "#DCE6F1"|dual output
+|bgcolor = "#DCE6F1"|
+|bgcolor = "#DCE6F1"|
+|-
+|}
-<br>
+===Thomson Innovation Search===
-'''Sources: Analyst Reports, Factiva News Articles'''
+'''Database:''' Thomson Innovation<br>
-<br>
+'''Patent coverage:''' US EP WO JP DE GB FR CN KR DWPI<br>
+'''Time line:''' 01/01/1836 to 07/03/2011
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
+|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Concept'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Scope'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Search String'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''No. of Hits'''</font>
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|1
+|bgcolor = "#DCE6F1"|Doubly-fed Induction Generator: Keywords(broad)
+|bgcolor = "#DCE6F1"|Claims, Title, and Abstract
+|bgcolor = "#DCE6F1"|(((((doubl<nowiki>*</nowiki>3 OR dual<nowiki>*</nowiki>3 OR two) ADJ3 (power<nowiki>*</nowiki>2 OR output<nowiki>*</nowiki>4 OR control<nowiki>*</nowiki>4 OR fed OR feed<nowiki>*</nowiki>3)) NEAR5 (induction OR asynchronous)) NEAR5 (generat<nowiki>*</nowiki>3 OR machine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1)) OR dfig or doig)
+|align = "right" bgcolor = "#DCE6F1"|873
+|-valign="top"
+|align = "center"|2
+|Doubly-fed Induction Generator: Keywords(broad)
+|Full Spec.
+|(((((doubl<nowiki>*</nowiki>3 OR dual<nowiki>*</nowiki>3 OR two) ADJ3 (power<nowiki>*</nowiki>2 OR output<nowiki>*</nowiki>1 OR control<nowiki>*</nowiki>4 OR fed OR feed<nowiki>*</nowiki>3)) NEAR5 (generat<nowiki>*</nowiki>3 OR machine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1))) OR dfig or doig)
+|align = "center"|<nowiki>-</nowiki>
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|3
+|bgcolor = "#DCE6F1"|Induction Machine: Classes
+|bgcolor = "#DCE6F1"|US, IPC, and ECLA Classes
+|bgcolor = "#DCE6F1"|((318/727 OR 322/047) OR (H02K001742))
+|align = "center" bgcolor = "#DCE6F1"|<nowiki>-</nowiki>
+|-valign="top"
+|align = "center"|4
+|Generators: Classes
+|US, IPC, and ECLA Classes
+|((290/044 OR 290/055) OR (F03D000900C OR H02J000338 OR F03D0009<nowiki>*</nowiki> OR H02P0009<nowiki>*</nowiki>))
+|align = "center"|<nowiki>-</nowiki>
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|5
+|bgcolor = "#DCE6F1"|Combined Query
+|align = "center" bgcolor = "#DCE6F1"|<nowiki>-</nowiki>
+|align = "left" bgcolor = "#DCE6F1"|2 AND 3
+|align = "right" bgcolor = "#DCE6F1"|109
+|-valign="top"
+|align = "center"|6
+|Combined Query
+|align = "center"|<nowiki>-</nowiki>
+|align = "left"|2 AND 4
+|align = "right"|768
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|7
+|bgcolor = "#DCE6F1"|French Keywords
+|bgcolor = "#DCE6F1"|Claims, Title, and Abstract
+|bgcolor = "#DCE6F1"|((((doubl<nowiki>*</nowiki>3 OR dual<nowiki>*</nowiki>3 OR two OR deux) NEAR4 (nourris OR feed<nowiki>*</nowiki>3 OR puissance OR sortie<nowiki>*</nowiki>1 OR contrôle<nowiki>*</nowiki>1)) NEAR4 (induction OR asynchron<nowiki>*</nowiki>1) NEAR4 (générateur<nowiki>*</nowiki>1 OR generator<nowiki>*</nowiki>1 OR machine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1)) OR dfig or doig)
+|align = "right" bgcolor = "#DCE6F1"|262
+|-valign="top"
+|align = "center"|8
+|German Keywords
+|Claims, Title, and Abstract
+|(((((doppel<nowiki>*</nowiki>1 OR dual OR two OR zwei) ADJ3 (ausgang OR ausgänge OR kontroll<nowiki>*</nowiki> OR control<nowiki>*</nowiki>4 OR gesteuert OR macht OR feed<nowiki>*</nowiki>1 OR gefüttert OR gespeiste<nowiki>*</nowiki>1)) OR (doppeltgefüttert OR doppeltgespeiste<nowiki>*</nowiki>1)) NEAR4 (((induktion OR asynchronen) NEAR4 (generator<nowiki>*</nowiki>2 OR maschine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1)) OR (induktion?maschinen OR induktion?generatoren OR asynchronmaschine OR asynchrongenerator))) OR dfig)
+|align = "right"|306
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|9
+|bgcolor = "#DCE6F1"|Doubly-fed Induction Generator: Keywords(narrow)
+|bgcolor = "#DCE6F1"|Full Spec.
+|bgcolor = "#DCE6F1"|(((((((doubl<nowiki>*</nowiki>3 OR dual<nowiki>*</nowiki>3) ADJ3 (power<nowiki>*</nowiki>2 OR output<nowiki>*</nowiki>4 OR control<nowiki>*</nowiki>4 OR fed OR feed<nowiki>*</nowiki>3))) NEAR5 (generat<nowiki>*</nowiki>3 OR machine<nowiki>*</nowiki>1 OR dynamo<nowiki>*</nowiki>1))) SAME wind) OR (dfig SAME wind))
+|align = "right" bgcolor = "#DCE6F1"|1375
+|-valign="top"
+|align = "center"|10
+| Top Assignees
+|align = "center"|<nowiki>-</nowiki>
+|(vestas* OR (gen* ADJ2 electric*) OR ge OR hitachi OR woodward OR repower OR areva OR gamesa OR ingeteam OR nordex OR siemens OR (abb ADJ2 research) OR (american ADJ2 superconductor*) OR (korea ADJ2 electro*) OR (univ* NEAR3 navarra) OR (wind OR technolog*) OR (wind ADJ2 to ADJ2 power))
+|align = "center"|-
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|11
+|bgcolor = "#DCE6F1"|Combined Query
+|align = "center" bgcolor = "#DCE6F1"|<nowiki>-</nowiki>
+|bgcolor = "#DCE6F1"|2 AND 10
+|align = "right" bgcolor = "#DCE6F1"|690
+|-valign="top"
+|align = "center"|12
+|Top Inventors
+|align = "center"|<nowiki>-</nowiki>
+|((Andersen NEAR2 Brian) OR (Engelhardt NEAR2 Stephan) OR (Ichinose NEAR2 Masaya) OR (Jorgensen NEAR2 Allan NEAR2 Holm) OR ((Scholte ADJ2 Wassink) NEAR2 Hartmut) OR (OOHARA NEAR2 Shinya) OR (Rivas NEAR2 Gregorio) OR (Erdman NEAR2 William) OR (Feddersen NEAR2 Lorenz) OR (Fortmann NEAR2 Jens) OR (Garcia NEAR2 Jorge NEAR2 Martinez) OR (Gertmar NEAR2 Lars) OR (KROGH NEAR2 Lars) OR (LETAS NEAR2 Heinz NEAR2 Hermann) OR (Lopez NEAR2 Taberna NEAR2 Jesus) OR (Nielsen NEAR2 John) OR (STOEV NEAR2 Alexander) OR (W?ng NEAR2 Haiqing) OR (Yuan NEAR2 Xiaoming))
+|align = "center"|-
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|13
+|bgcolor = "#DCE6F1" |Combined Query
+|align = "center" bgcolor = "#DCE6F1"|<nowiki>-</nowiki>
+|bgcolor = "#DCE6F1"|((3 OR 4) AND 10)
+|align = "right" bgcolor = "#DCE6F1"|899
+|-valign="top"
+|align = "center"|14
+|Final Query
+|align = "center"|<nowiki>-</nowiki>
+|1 OR 5 OR 6 OR 7 OR 8 OR 9 OR 11 OR 13
+|'''2466(1060 INPADOC Families)'''
+|-
+|}
-==Market Overview==
+==Taxonomy==
+*''Use the mouse(click and drag/scroll up or down/click on nodes) to explore nodes in the detailed taxonomy''
+*''Click on the red arrow adjacent to the node name to view the content for that particular node in the dashboard''
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
+|<mm>[[Doubly_fed_Induction_Generator.mm|Interactive Mind-map|center|flash|Doubly-fed Induction Generator|600pt]]</mm>
+|}
-===Market Share===
+==Sample Analysis==
-<br>
+A sample of 139 patents from the search is analyzed based on the taxonomy.
-[[Image:Market Position1.jpg|600px|center]]
+Provided a link below for sample spread sheet analysis for doubly-fed induction generators.<br>
-<br>
+===Patent Analysis===
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
-* Market Share of Vestas Wind Systems for 3 years from different sources
+|align = "center" bgcolor = "#4F81BD" rowspan = "2" width="38"|<font color="#FFFFFF">'''S.No.'''</font>
-<br>
+|align = "center" bgcolor = "#4F81BD" rowspan = "2" |<font color="#FFFFFF">'''Patent/Publication No.'''</font>
-{|border="2" cellspacing="0" cellpadding="4" width="40%" align="center"
+|align = "center" bgcolor = "#4F81BD" rowspan = "2" width="105"|<font color="#FFFFFF">'''Publication Date<br>'''(mm/dd/yyyy)</font>
-|align = "center" bgcolor = "#C5D9F1"|'''Source'''
+|align = "center" bgcolor = "#4F81BD" rowspan = "2"|<font color="#FFFFFF">'''Assignee/Applicant'''</font>
-|align = "center" bgcolor = "#C5D9F1"|'''2010'''
+|align = "center" bgcolor = "#4F81BD" rowspan = "2"|<font color="#FFFFFF">'''Title'''</font>
-|align = "center" bgcolor = "#C5D9F1"|'''2009'''
+|align = "center" bgcolor = "#4F81BD" colspan = "2"|<font color="#FFFFFF">'''Dolcera Analysis'''</font>
-|align = "center" bgcolor = "#C5D9F1"|'''2008'''
 |-
-|'''BTM Consult'''
+|align = "center" bgcolor = "#95B3D7"|'''Problem'''
-|align = "center"|14.8%
+|align = "center" bgcolor = "#95B3D7"|'''Solution'''
-|align = "center"|12.5%
+|-valign="top"
-|align = "center"|19%
+|align = "center" bgcolor = "#DCE6F1"|1
-|-
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100117605%22.PGNR.&OS=DN/20100117605&RS=DN/20100117605 US20100117605]</u></font>
-|'''Make Consulting'''
+|align = "center" bgcolor = "#DCE6F1"|05/13/10
-|align = "center"|12%
+|bgcolor = "#DCE6F1"|Woodward
-|align = "center"|14.5%
+|bgcolor = "#DCE6F1"|Method of and apparatus for operating a double-fed asynchronous machine in the event of transient mains voltage changes
-|align = "center"|19%
+|bgcolor = "#DCE6F1"|The short-circuit-like currents in the case of transient mains voltage changes lead to a corresponding air gap torque which loads the drive train and transmission lines can damages or reduces the drive train and power system equipments.
+|bgcolor = "#DCE6F1"|The method presents that the stator connecting with the network and the rotor with a converter. The converter is formed to set a reference value of electrical amplitude in the rotor, by which a reference value of the electrical amplitude is set in the rotor after attaining a transient mains voltage change, such that the rotor flux approaches the stator flux.
+|-valign="top"
+|align = "center"|2
+|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100045040%22.PGNR.&OS=DN/20100045040&RS=DN/20100045040 US20100045040]</u></font>
+|align = "center"|02/25/10
+|Vestas Wind Systems
+|Variable speed wind turbine with doubly-fed induction generator compensated for varying rotor speed
+|The DFIG system has poor damping of oscillations within the flux dynamics due to cross coupling between active and reactive currents, which makes the system potentially unstable under certain circumstances and complicates the work of the rotor current controller. These oscillations can damage the drive train mechanisms.
+|A compensation block is arranged, which feeds a compensation control output to the rotor of the generator. The computation unit computes the control output during operation of the turbine to compensate partly for dependencies on a rotor angular speed of locations of poles of a generator transfer function, so that the transfer function is made independent of variations in the speed during operation of the turbine which eliminates the oscillations and increases the efficiency of the wind turbine.
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|3
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090267572%22.PGNR.&OS=DN/20090267572&RS=DN/20090267572 US20090267572]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|10/29/09
+|bgcolor = "#DCE6F1"|Woodward
+|bgcolor = "#DCE6F1"|Current limitation for a double-fed asynchronous machine
+|bgcolor = "#DCE6F1"|Abnormal currents can damage the windings in the doubly- fed induction generator. Controlling these currents with the subordinate current controllers cannot be an efficient way to extract the maximum amount of active power.
+|bgcolor = "#DCE6F1"|The method involves delivering or receiving of a maximum permissible reference value of an active power during an operation of a double-fed asynchronous machine, where predetermined active power and reactive power reference values are limited to a calculated maximum permissible active and reactive power reference values, and hence ensures reliable regulated effect and reactive power without affecting the power adjustment, the rotor is electrically connected to a pulse-controlled inverter by slip rings with a static frequency changer, and thus a tension with variable amplitude and frequency is imposed in the rotor.
+|-valign="top"
+|align = "center"|4
+|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008944%22.PGNR.&OS=DN/20090008944&RS=DN/20090008944 US20090008944]</u></font>
+|align = "center"|01/08/09
+|Universidad Publica De Navarra
+|Method and system of control of the converter of an electricity generation facility connected to an electricity network in the presence of voltage sags in said network
+|Double-fed asynchronous generators are very sensitive to the faults that may arise in the electricity network, such as voltage sags. During the sag conditions the current which appears in said converter may reach very high values, and may even destroy it.
+|During the event of a voltage sag occurring, the converter imposes a new set point current which is the result of adding to the previous set point current a new term, called demagnetizing current, It is proportional to a value of free flow of a generator stator. A difference between a value of a magnetic flow in the stator of the generator and a value of a stator flow associated to a direct component of a stator voltage is estimated. A value of a preset calculated difference is multiplied by a factor for producing the demagnetizing current.
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|5
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7355295.PN.&OS=PN/7355295&RS=PN/7355295 US7355295]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|04/08/08
+|bgcolor = "#DCE6F1"|Ingeteam Energy
+|bgcolor = "#DCE6F1"|Variable speed wind turbine having an exciter machine and a power converter not connected to the grid
+|bgcolor = "#DCE6F1"|a) The active switching of the semiconductors of the grid side converter injects undesirable high frequency harmonics to the grid.<br>b) The use of power electronic converters (4) connected to the grid (9) causes harmonic distortion of the network voltage.
+|bgcolor = "#DCE6F1"|Providing the way that power is only delivered to the grid through the stator of the doubly fed induction generator, avoiding undesired harmonic distortion. <br>Grid Flux Orientation (GFO) is used to accurately control the power injected to the grid. An advantage of this control system is that it does not depend on machine parameters, which may vary significantly, and theoretical machine models, avoiding the use of additional adjusting loops and achieving a better power quality fed into the utility grid.
+|-valign="top"
+|align = "center"|6
+|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080203978%22.PGNR.&OS=DN/20080203978&RS=DN/20080203978 US20080203978]</u></font>
+|align = "center"|08/28/08
+|Semikron
+|Frequency converter for a double-fed asynchronous generator with variable power output and method for its operation
+|Optislip circuit with a resistor is used when speed is above synchronous speed, results in heating the resistor and thus the generator leads to limitation of operation in super synchronous range which results in tower fluctuations.
+|Providing a back-to-back converter which contains the inverter circuit has direct current (DC) inputs, DC outputs, and a rotor-rectifier connected to a rotor of a dual feed asynchronous generator. A mains inverter is connected to a power grid, and an intermediate circuit connects one of the DC inputs with the DC outputs. The intermediate circuit has a semiconductor switch between the DC outputs, an intermediate circuit condenser between the DC inputs, and a diode provided between the semiconductor switch and the condenser. Thus the system is allowed for any speed of wind  and reduces the tower fluctuations.
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|7
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070210651%22.PGNR.&OS=DN/20070210651&RS=DN/20070210651 US20070210651]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|09/13/07
+|bgcolor = "#DCE6F1"|Hitachi
+|bgcolor = "#DCE6F1"|Power converter for doubly-fed power generator system
+|bgcolor = "#DCE6F1"|During the ground faults, excess currents is induced in the secondary windings and flows into power converter connected to secondary side and may damage the power converter. Conventional methods of increasing the capacity of the power converter increases system cost, degrade the system and takes time to activate the system to supply power again.
+|bgcolor = "#DCE6F1"|The generator provided with a  excitation power converter connected to secondary windings of a doubly-fed generator via impedance e.g. reactor, and a diode rectifier connected in parallel to the second windings of the doubly-fed generator via another impedance. A direct current link of the rectifier is connected in parallel to a DC link of the converter. A controller  outputs an on-command to a power semiconductor switching element of the converter if a value of current flowing in the power semiconductor switching element is a predetermined value or larger.
+|-valign="top"
+|align = "center"|8
+|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070132248%22.PGNR.&OS=DN/20070132248&RS=DN/20070132248 US20070132248]</u></font>
+|align = "center"|06/14/07
+|General Electric
+|System and method of operating double fed induction generators
+|Wind turbines with double fed induction generators are sensitive to grid faults. Conventional methods are not effective to reduce the shaft stress during grid faults and slow response and using dynamic voltage restorer (DVR) is cost expensive.
+|The protection system has a controlled impedance device. Impedance device has bidirectional semiconductors such triac, assembly of thyristors or anti-parallel thyristors. Each of the controlled impedance devices is coupled between a respective phase of a stator winding of a double fed induction generator and a respective phase of a grid side converter. The protection system also includes a controller configured for coupling and decoupling impedance in one or more of the controlled impedance devices in response to changes in utility grid voltage and a utility grid current. High impedance is offered to the grid during network faults to isolate the dual fed wind turbine generator.
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|9
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060192390%22.PGNR.&OS=DN/20060192390&RS=DN/20060192390 US20060192390]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|08/31/06
+|bgcolor = "#DCE6F1"|Gamesa Innovation
+|bgcolor = "#DCE6F1"|Control and protection of a doubly-fed induction generator system
+|bgcolor = "#DCE6F1"|A short-circuit in the grid causes the generator to feed high stator-currents into the short-circuit and the rotor-currents increase very rapidly which cause damage to the power-electronic components of the converter connecting the rotor windings with the rotor-inverter.
+|bgcolor = "#DCE6F1"|The converter is provided with a clamping unit which is triggered from a non-operation state to an operation state, during detection of over-current in the rotor windings. The clamping unit comprises passive voltage-dependent resistor element for providing a clamping voltage over the rotor windings when the clamping unit is triggered.
+|-valign="top"
+|align = "center"|10
+|<font color="#0000FF"><u>[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220050189896%22.PGNR.&OS=DN/20050189896&RS=DN/20050189896 US20050189896]</u></font>
+|align = "center"|09/01/05
+|ABB Research
+|Method for controlling doubly-fed machine
+|Controlling the double fed machines on the basis of inverter control to implement the targets set for the machine, this model is extremely complicated and includes numerous parameters that are often to be determined.
+|A method is provided to use a standard scalar-controlled frequency converter for machine control. A frequency reference for the inverter with a control circuit, and reactive power reference are set for the machine. A rotor current compensation reference is set based on reactive power reference and reactive power. A scalar-controlled inverter is controlled for producing voltage for the rotor of the machine, based on the set frequency reference and rotor current compensation reference.
 |-
 |}
-<br><br>
+Click '''[[Media:Doublyfed_induction_generator1.xls| here]]''' to view the detailed analysis sheet for doubly-fed induction generators patent analysis.
-'''Reasons for decrease in market share:'''
-* Emerging competitors in the wind energy space.
-* Stiff competition for Vestas in China – Sinovel (21,9%), Goldwind (17,7%), and Dongfang (16,4%) - which are all of Chinese origin. China‘s main three suppliers hold about 60% stake in the home market.
-* GE is providing a stiff competition in the american market.
-* The German market, being one of the core countries in Vestas strategy, is showing signs of saturation.
-<br>
+===Article Analysis===
-'''Source: BTM Consult, Make Consulting, Analyst Reports'''
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
+|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S.No.'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Title'''</font>
+|align = "center" bgcolor = "#4F81BD" width="105"|<font color="#FFFFFF">'''Publication Date<br>'''(mm/dd/yyyy)</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Journal/Conference'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Dolcera Summary'''</font>
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|1
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=1709031&queryText=Study+on+the+Control+of+DFIG+and+Its+Responses+to+Grid+Disturbances&openedRefinements=*&searchField=Search+All Study on the Control of DFIG and its Responses to Grid Disturbances ]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|01/01/06
+|bgcolor = "#DCE6F1"|Power Engineering Society General Meeting, 2006. IEEE
+|bgcolor = "#DCE6F1"|Presented dynamic model of the DFIG, including mechanical model, generator model, and PWM voltage source converters. Vector control strategies adapted for both the RSC and GSC to control speed and reactive power independently. Control designing methods, such as pole-placement method and the internal model control are used. MATLAB/Simulink is used for simulation.
+|-valign="top"
+|align = "center"|2
+|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=1649950&queryText=Application+of+Matrix+Converter+for+Variable+Speed+Wind+Turbine+Driving+an+Doubly+Fed+Induction+Generator&openedRefinements=*&searchField=Search+All Application of Matrix Converter for Variable Speed Wind Turbine Driving an Doubly Fed Induction Generator ]</u></font>
+|align = "center"|05/23/06
+|Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006.
+|A matrix converter is replaced with back to back converter in a variable speed wind turbine using doubly fed induction generator. Stable operation is achieved by stator flux oriented control technique and the system operated in both sub and super synchronous modes, achieved good results.
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|3
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=4778305&queryText=Optimal+Power+Control+Strategy+of+Maximizing+Wind+Energy+Tracking+and+Conversion+for+VSCF+Doubly+Fed+Induction+Generator+System&openedRefinements=*&searchField=Search+Al Optimal Power Control Strategy of Maximizing Wind Energy Tracking and Conversion for VSCF Doubly Fed Induction Generator System ]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|08/14/06
+|bgcolor = "#DCE6F1"|Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
+|bgcolor = "#DCE6F1"|Proposed a new optimal control strategy of maximum wind power extraction strategies and testified by simulation. The control algorithm also used to minimize the losses in the generator. The dual passage excitation control strategy is applied to decouple the active and reactive powers. With this control system, the simulation results show the good robustness and high generator efficiency is achieved.
+|-valign="top"
+|align = "center"|4
+|<font color="#0000FF"><u>[http://docs.google.com/viewer?a=v&q=cache:HqaFsMBhchcJ:iris.elf.stuba.sk/JEEEC/data/pdf/3_108-8.pdf+A+TORQUE+TRACKING+CONTROL+ALGORITHM+FOR+DOUBLY–FED+INDUCTION+GENERATOR&hl=enπd=bl&srcid=ADGEESgbHXoAbKe4O7b5DnykDc7h_LaHwCMIhkVrGX_whx4iUuE4Mc-3Rfq1DyW_h A Torque Tracking Control algorithm for Doubly–fed Induction Generator ]</u></font>
+|align = "center"|01/01/08
+|Journal of Electrical Engineering
+|Proposed a torque tracking control algorithm for Doubly fed induction generator using PI controllers. It is achieved by controlling the rotor currents and using a stator voltage vector reference frame.
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|5
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/search/freesrchabstract.jsp?tp=&arnumber=4651578&queryText=Fault+Ride+Through+Capability+Improvement+Of+Wind+Farms+Usind+Doubly+Fed+Induciton+Generator&openedRefinements=*&searchField=Search+All Fault Ride Through Capability Improvement Of Wind Farms Using Doubly Fed Induction Generator ]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|09/04/08
+|bgcolor = "#DCE6F1"|Universities Power Engineering Conference, 2008. UPEC 2008. 43rd International
+|bgcolor = "#DCE6F1"|An active diode bridge crowbar switch presented to improve fault ride through capability of DIFG. Showed different parameters related to crowbar such a crowbar resistance, power loss, temperature and time delay for deactivation during fault.
+|-
+|}
+Click '''[[Media:Doublyfed_induction_generators1.xls| here]]''' to view the detailed analysis sheet for doubly-fed induction generators article analysis.
 <br>
-===Track record by Turbine Type===
+===Top Cited Patents===
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
+|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
-{|border="2" cellspacing="0" cellpadding="4" width="80%" align="center"
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Patent/Publication No.'''</font>
-|align = "center" bgcolor = "#538ED5" rowspan = "2"|'''Turbine Type'''
+|align = "center" bgcolor = "#4F81BD" width="105"|<font color="#FFFFFF">'''Publication Date'''<br>(mm/dd/yyyy)</font>
-|align = "center" bgcolor = "#538ED5" colspan = "2"|'''Installed in 2010'''
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Assignee/Applicant'''</font>
-|align = "center" bgcolor = "#538ED5" colspan = "2"|'''Accumulated Installed'''
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Title'''</font>
-|-
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Citation Count'''</font>
-|align = "center" bgcolor = "#C5D9F1"|'''Number'''
+|-valign="top"
-|align = "center" bgcolor = "#C5D9F1"|'''MW'''
+|align = "center" bgcolor = "#DCE6F1"|1
-|align = "center" bgcolor = "#C5D9F1"|'''Number'''
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5289041.PN.&OS=PN/5289041&RS=PN/5289041 US5289041]</u></font>
-|align = "center" bgcolor = "#C5D9F1"|'''MW'''
+|align = "center" bgcolor = "#DCE6F1"|02/22/94
-|-
+|bgcolor = "#DCE6F1"|US Windpower
-|align = "center"|V52-850 kW
+|bgcolor = "#DCE6F1"|Speed control system for a variable speed wind turbine
-|align = "center"|340
+|align = "center" bgcolor = "#DCE6F1"|80
-|align = "center"|289
+|-valign="top"
-|align = "center"|3,764
+|align = "center"|2
-|align = "center"|3,199
+|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4982147.PN.&OS=PN/4982147&RS=PN/4982147 US4982147]</u></font>
-|-
+|align = "center"|01/01/91
-|align = "center"|V60-850 kW
+|Oregon State
-|align = "center"|15
+|Power factor motor control system
-|align = "center"|13
+|align = "center"|62
-|align = "center"|15
+|-valign="top"
-|align = "center"|13
+|align = "center" bgcolor = "#DCE6F1"|3
-|-
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5028804.PN.&OS=PN/5028804&RS=PN/5028804 US5028804]</u></font>
-|align = "center"|V80-1.8 MW
+|align = "center" bgcolor = "#DCE6F1"|07/02/91
-|align = "center"|0
+|bgcolor = "#DCE6F1"|Oregon State
-|align = "center"|0
+|bgcolor = "#DCE6F1"|Brushless doubly-fed generator control system
-|align = "center"|1,016
+|align = "center" bgcolor = "#DCE6F1"|51
-|align = "center"|1,829
+|-valign="top"
-|-
+|align = "center"|4
-|align = "center"|V80-2.0 MW
+|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5239251.PN.&OS=PN/5239251&RS=PN/5239251 US5239251]</u></font>
-|align = "center"|267
+|align = "center"|08/24/93
-|align = "center"|534
+|Oregon State
-|align = "center"|2,981
+|Brushless doubly-fed motor control system
-|align = "center"|5,962
+|align = "center"|49
-|-
+|-valign="top"
-|align = "center"|V82-1.5 MW
+|align = "center" bgcolor = "#DCE6F1"|5
-|align = "center"|0
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6856038.PN.&OS=PN/6856038&RS=PN/6856038 US6856038]</u></font>
-|align = "center"|0
+|align = "center" bgcolor = "#DCE6F1"|02/15/05
-|align = "center"|213
+|bgcolor = "#DCE6F1"|Vestas Wind Systems
-|align = "center"|320
+|bgcolor = "#DCE6F1"|Variable speed wind turbine having a matrix converter
-|-
+|align = "center" bgcolor = "#DCE6F1"|43
-|align = "center"|V82-1.65 MW
+|-valign="top"
-|align = "center"|273
+|align = "center"|6
-|align = "center"|450
+|<font color="#0000FF"><u>[http://www.wipo.int/pctdb/en/wo.jsp?WO=1999029034 WO1999029034]</u></font>
-|align = "center"|2,883
+|align = "center"|06/10/99
-|align = "center"|4,757
+|Asea Brown
-|-
+|A method and a system for speed control of a rotating electrical machine with flux composed of two quantities
-|align = "center"|V90-1.8 MW
-|align = "center"|269
-|align = "center"|484
-|align = "center"|572
-|align = "center"|1,029
-|-
-|align = "center"|V90-2.0 MW
-|align = "center"|763
-|align = "center"|1,527
-|align = "center"|3,286
-|align = "center"|6,544
-|-
-|align = "center"|V90-3.0 MW
-|align = "center"|834
-|align = "center"|2,502
-|align = "center"|2,170
-|align = "center"|6,510
-|-
-|align = "center"|V100-1.8 MW
-|align = "center"|20
-|align = "center"|36
-|align = "center"|20
 |align = "center"|36
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|7
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://www.wipo.int/pctdb/en/wo.jsp?WO=1999019963 WO1999019963]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|04/22/99
+|bgcolor = "#DCE6F1"|Asea Brown
+|bgcolor = "#DCE6F1"|Rotating electric machine
+|align = "center" bgcolor = "#DCE6F1"|36
+|-valign="top"
+|align = "center"|8
+|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7015595.PN.&OS=PN/7015595&RS=PN/7015595 US7015595]</u></font>
+|align = "center"|03/21/06
+|Vestas Wind Systems
+|Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control
+|align = "center"|34
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|9
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4763058.PN.&OS=PN/4763058&RS=PN/4763058 US4763058]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|08/09/88
+|bgcolor = "#DCE6F1"|Siemens
+|bgcolor = "#DCE6F1"|Method and apparatus for determining the flux angle of rotating field machine or for position-oriented operation of the machine
+|align = "center" bgcolor = "#DCE6F1"|32
+|-valign="top"
+|align = "center"|10
+|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7095131.PN.&OS=PN/7095131&RS=PN/7095131 US7095131]</u></font>
+|align = "center"|08/22/06
+|General Electric
+|Variable speed wind turbine generator
+|align = "center"|25
 |-
-|align = "center"|V112-3.0 MW
+|}
-|align = "center"|2
+===Top Cited Articles===
-|align = "center"|6
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
+|align = "center" bgcolor = "#4F81BD" width="38"|<font color="#FFFFFF">'''S. No.'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Title'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Publication Date'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Journal/Conference'''</font>
+|align = "center" bgcolor = "#4F81BD"|<font color="#FFFFFF">'''Citations Count'''</font>
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|1
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=502360 Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|May. 1996
+|bgcolor = "#DCE6F1"|IEEE Proceedings Electric Power Applications
+|align = "center" bgcolor = "#DCE6F1"|906
+|-valign="top"
 |align = "center"|2
+|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=999610 Doubly fed induction generator systems for wind turbines]</u></font>
+|align = "center"|May. 2002
+|IEEE Industry Applications Magazine
+|align = "center"|508
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|3
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=1198317 Dynamic modeling of doubly fed induction generator wind turbines]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|May. 2003
+|bgcolor = "#DCE6F1"|IEEE Transactions on Power Systems
+|align = "center" bgcolor = "#DCE6F1"|274
+|-valign="top"
+|align = "center"|4
+|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1201089 Modeling and control of a wind turbine driven doubly fed induction generator]</u></font>
+|align = "center"|Jun. 2003
+|IEEE Transactions on Energy Conversion
+|align = "center"|271
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|5
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/iel5/60/30892/01432858.pdf?arnumber=1432858 Ride through of wind turbines with doubly-fed induction generator during a voltage dip]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|Jun. 2005
+|bgcolor = "#DCE6F1"|IEEE Transactions on Energy Conversion
+|align = "center" bgcolor = "#DCE6F1"|246
+|-valign="top"
 |align = "center"|6
+|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=970114 Dynamic modeling of a wind turbine with doubly fed induction generator]</u></font>
+|align = "center"|July. 2001
+|IEEE Power Engineering Society Summer Meeting, 2001
+|align = "center"|196
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|7
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1597345 Modeling of the wind turbine with a doubly fed induction generator for grid integration studies]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|Mar. 2006
+|bgcolor = "#DCE6F1"|IEEE Transactions on Energy Conversion
+|align = "center" bgcolor = "#DCE6F1"|174
+|-valign="top"
+|align = "center"|8
+|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=543631 A doubly fed induction generator using back-to-back PWM converters supplying an isolated load from a variable speed wind turbine]</u></font>
+|align = "center"|Sept. 1996
+|IEEE Proceedings Electric Power Applications
+|align = "center"|150
+|-valign="top"
+|align = "center" bgcolor = "#DCE6F1"|9
+|bgcolor = "#DCE6F1"|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?&arnumber=1432853 Doubly fed induction generator model for transient stability analysis]</u></font>
+|align = "center" bgcolor = "#DCE6F1"|Jun. 2005
+|bgcolor = "#DCE6F1"|IEEE Transactions on Energy Conversion
+|align = "center" bgcolor = "#DCE6F1"|106
+|-valign="top"
+|align = "center"|10
+|<font color="#0000FF"><u>[http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1677655 Control of a doubly fed induction generator in a wind turbine during grid fault ride-through]</u></font>
+|align = "center"|Sept. 2006
+|IEEE Transactions on Energy Conversion
+|align = "center"|112
 |-
-|align = "center"|Other
+|}
-|align = "center"|1
-|align = "center"|1
-|align = "center"|26,511
-|align = "center"|13,909
-|-
-|align = "center"|'''Total'''
-|align = "center"|'''2,784'''
-|align = "center"|'''5,842'''
-|align = "center"|'''43,433'''
-|align = "center"|'''44,114'''
-|-
-|}
-<br>
-===Competitive Advantage===
-[[Image:Vestas7.jpg|center|700*400 px]]
-<br>
-'''Sources: Analyst Reports'''
-<br>
-===Strategic Position===
-[[Image:Vestas6.jpg|center|700*400 px]]
-<br>
-'''Sources: BTM Consulting, Analyst Reports'''
-<br>
-===SWOT Analysis===
+===White Space Analysis===
+* White-space analysis provides the technology growth and gaps in the technology where further R&D can be done to gain competitive edge and to carry out incremental innovation.
+* Dolcera provides White Space Analysis in different  dimensions. Based on Product, Market, Method of Use, Capabilities or Application or Business Area and defines the exact categories within the dimension.
+* Below table shows a sample representation of white space analysis for controlling DFIG parameters with converters, based on the sample analysis.
+{|border="2" cellspacing="0" cellpadding="14" width="20%"
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''White Space of converters used to control'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Active power'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Reactive Power'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Decoupled P-Q control'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Field oriented control'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Direct torque control'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Speed control'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Frequency Control'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Pitch control'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''PWM Technique'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Low voltage ride through'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Network fault/Grid fault'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Symmetrical and Asymmetrical Faults'''</font></center>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Temp control'''</font></center>
-{|border="2" cellspacing="0" cellpadding="4" width="65%" align="center"
-|align = "center" bgcolor = "#538ED5"|'''Strengths'''
-|align = "center" bgcolor = "#538ED5"|'''Weaknesses'''
 |-
-|<br>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Grid Side active converters'''</font></center>
-* Customer loyalty and satisfaction<br>
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052394%22.PGNR.&OS=DN/20070052394&RS=DN/20070052394 US20070052394A1]
-* Strong global market position<br>
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060028025%22.PGNR.&OS=DN/20060028025&RS=DN/20060028025 US20060028025A1]
-* Attract and retain skilled workforce<br>
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100148508%22.PGNR.&OS=DN/20100148508&RS=DN/20100148508 US20100148508A1]
-* Strong R&D<br>
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100133816%22.PGNR.&OS=DN/20100133816&RS=DN/20100133816 US20100133816A1]
-* High quality product and service offering<br><br>
+[http://v3.espacenet.com/searchResults?NUM=EP2166226A1&DB=EPODOC&submitted=true&locale=en_V3&ST=number&compact=false EP2166226A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070132248%22.PGNR.&OS=DN/20070132248&RS=DN/20070132248 US20070132248A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052394%22.PGNR.&OS=DN/20070052394&RS=DN/20070052394 US20070052394A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100096853%22.PGNR.&OS=DN/20100096853&RS=DN/20100096853 US20100096853A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100114388%22.PGNR.&OS=DN/20100114388&RS=DN/20100114388 US20100114388A1]
 |
-* Relies too much on European market<br>
+|
-* Long delivery time of turbines<br>
+| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008938%22.PGNR.&OS=DN/20090008938&RS=DN/20090008938 US20090008938A1]
-* Communication process with customers
+| style="background-color:#ffffff;"| [http://www.wipo.int/pctdb/en/wo.jsp?WO=2010079234 WO2010079234A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090230689%22.PGNR.&OS=DN/20090230689&RS=DN/20090230689 US20090230689A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090206606%22.PGNR.&OS=DN/20090206606&RS=DN/20090206606 US20090206606A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070024247%22.PGNR.&OS=DN/20070024247&RS=DN/20070024247 US20070024247A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090206606%22.PGNR.&OS=DN/20090206606&RS=DN/20090206606 US20090206606A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080129050%22.PGNR.&OS=DN/20080129050&RS=DN/20080129050 US20080129050A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100156192%22.PGNR.&OS=DN/20100156192&RS=DN/20100156192 US20100156192A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070182383%22.PGNR.&OS=DN/20070182383&RS=DN/20070182383 US20070182383A1]
+| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100002475%22.PGNR.&OS=DN/20100002475&RS=DN/20100002475 US20100002475A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080296898%22.PGNR.&OS=DN/20080296898&RS=DN/20080296898 US20080296898A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070273155%22.PGNR.&OS=DN/20070273155&RS=DN/20070273155 US20070273155A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070278797%22.PGNR.&OS=DN/20070278797&RS=DN/20070278797 US20070278797A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052244%22.PGNR.&OS=DN/20070052244&RS=DN/20070052244 US20070052244A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070024059%22.PGNR.&OS=DN/20070024059&RS=DN/20070024059 US20070024059A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060238929%22.PGNR.&OS=DN/20060238929&RS=DN/20060238929 US20060238929A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070177314%22.PGNR.&OS=DN/20070177314&RS=DN/20070177314 US20070177314A1]
+| style="background-color:#ffffff;"|[http://v3.espacenet.com/searchResults?NUM=EP2166226A1&DB=EPODOC&submitted=true&locale=en_V3&ST=number&compact=false EP2166226A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090121483%22.PGNR.&OS=DN/20090121483&RS=DN/20090121483 US20090121483A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008938%22.PGNR.&OS=DN/20090008938&RS=DN/20090008938 US20090008938A1]
 |-
-|align = "center" bgcolor = "#538ED5"|'''Opportunities'''
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Grid side passive converters'''</font></center>
-|align = "center" bgcolor = "#538ED5"|'''Threats'''
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220030151259%22.PGNR.&OS=DN/20030151259&RS=DN/20030151259 US20030151259A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220030151259%22.PGNR.&OS=DN/20030151259&RS=DN/20030151259 US20030151259A1]
+|
+|
+|
+|
+|
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220030151259%22.PGNR.&OS=DN/20030151259&RS=DN/20030151259 US20030151259A1]
+|
+|
+|
+|
+|
 |-
-|<br>
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Rotor side converter'''</font></center>
-* Combine hydropower and wind power<br>
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100142237%22.PGNR.&OS=DN/20100142237&RS=DN/20100142237 US20100142237A1]
-* Enter into emerging markets<br>
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052394%22.PGNR.&OS=DN/20070052394&RS=DN/20070052394 US20070052394A1]
-* Develop offshore technology<br><br>
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060028025%22.PGNR.&OS=DN/20060028025&RS=DN/20060028025 US20060028025A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100096853%22.PGNR.&OS=DN/20100096853&RS=DN/20100096853 US20100096853A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100148508%22.PGNR.&OS=DN/20100148508&RS=DN/20100148508 US20100148508A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100133816%22.PGNR.&OS=DN/20100133816&RS=DN/20100133816 US20100133816A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070132248%22.PGNR.&OS=DN/20070132248&RS=DN/20070132248 US20070132248A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052394%22.PGNR.&OS=DN/20070052394&RS=DN/20070052394 US20070052394A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100114388%22.PGNR.&OS=DN/20100114388&RS=DN/20100114388 US20100114388A1]
+|
 |
-* Macro conditions in US market<br>
+| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008938%22.PGNR.&OS=DN/20090008938&RS=DN/20090008938 US20090008938A1]
-* Nature of projects<br>
+| style="background-color:#ffffff;"|[http://www.wipo.int/pctdb/en/wo.jsp?WO=2010079234 WO2010079234A1]
-* Financial risk, credit risk and market risk
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090230689%22.PGNR.&OS=DN/20090230689&RS=DN/20090230689 US20090230689A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070024247%22.PGNR.&OS=DN/20070024247&RS=DN/20070024247 US20070024247A1]
+| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080129050%22.PGNR.&OS=DN/20080129050&RS=DN/20080129050 US20080129050A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070182383%22.PGNR.&OS=DN/20070182383&RS=DN/20070182383 US20070182383A1]
+| style="background-color:#ffffff;"|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100002475%22.PGNR.&OS=DN/20100002475&RS=DN/20100002475 US20100002475A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080296898%22.PGNR.&OS=DN/20080296898&RS=DN/20080296898 US20080296898A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070273155%22.PGNR.&OS=DN/20070273155&RS=DN/20070273155 US20070273155A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070278797%22.PGNR.&OS=DN/20070278797&RS=DN/20070278797 US20070278797A1]
+| style="background-color:#ffffff;"|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220080157533%22.PGNR.&OS=DN/20080157533&RS=DN/20080157533 US20080157533A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070052244%22.PGNR.&OS=DN/20070052244&RS=DN/20070052244 US20070052244A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070024059%22.PGNR.&OS=DN/20070024059&RS=DN/20070024059 US20070024059A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220060238929%22.PGNR.&OS=DN/20060238929&RS=DN/20060238929 US20060238929A1]
+| style="background-color:#ffffff;"|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090273185%22.PGNR.&OS=DN/20090273185&RS=DN/20090273185 US20090273185A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070177314%22.PGNR.&OS=DN/20070177314&RS=DN/20070177314 US20070177314A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090121483%22.PGNR.&OS=DN/20090121483&RS=DN/20090121483 US20090121483A1]
+[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090008938%22.PGNR.&OS=DN/20090008938&RS=DN/20090008938 US20090008938A1]
 |-
-|}
+| style="background-color:#4F81BD;"| <center><font color="#FFFFFF">'''Matrix converters'''</font></center>
+|
+| style="background-color:#ffffff;"| [http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220020079706%22.PGNR.&OS=DN/20020079706&RS=DN/20020079706 US20020079706A1]
+|
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070216164%22.PGNR.&OS=DN/20070216164&RS=DN/20070216164 US20070216164A1]
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220090265040%22.PGNR.&OS=DN/20090265040&RS=DN/20090265040 US20090265040A1]
+|
+|
+|[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070216164%22.PGNR.&OS=DN/20070216164&RS=DN/20070216164 US20070216164A1]
+|
+|
+|
+|
+|
+|}
-<br>
+== Dolcera Dashboard ==
+[[Image:dashboard_features.png|center|750px|]]
-==Recent Developments==
+'''Dashboard Link'''<br>
-<br>
+{|border="2" cellspacing="0" cellpadding="4" width="100%"
+|'''[https://www.dolcera.com/auth/dashboard/dashboard.php?workfile_id=825 Doubly Fed Induction Generator - Dashboard] '''
-{|border="2" cellspacing="0" cellpadding="4" width="90%" align="center"
+|width="100"|[[Image:dashboard_thumb.png|center|100px|]]
-|align = "center" bgcolor = "#538ED5"|'''S.No'''
-|align = "center" bgcolor = "#538ED5"|'''Date'''
-|align = "center" bgcolor = "#538ED5"|'''Details'''
-|align = "center" bgcolor = "#538ED5"|'''Source'''
 |-
-|align = "center"|1
+|}
-|align = "center"|6th May<nowiki>’</nowiki>11
+*Flash Player is essential to view the Dolcera dashboard
-|Danish wind-turbine maker '''Vestas Wind Systems A/S'''  said today it won an order for 34 units of its V90-3.0 MW wind turbine for a project in California owned by Canadian Brookfield Renewable Power Inc and US Coram California Development Management LLC. Vestas will be responsible for the delivery and commissioning of the turbines and will provide service and maintenance for two years. It will as well provide a VestasOnline Business SCADA system.The wind turbines are due for delivery in the second half of 2011. Commissioning is scheduled to happen by late 2011.
-|align = "center"|ProQuest
-|-
-|align = "center"|2
-|align = "center"|4th May<nowiki>’</nowiki>11
-|'''Vestas''' has been handed a 250MW supply agreement by the Guibang Shengtai Investment (GSI). GSI has also signed the deal is for 24 V80 2MW turbines for a project in Huitengxile, in the Inner Mongolia Autonomous Region. This is the second 100MW<nowiki>+</nowiki> deal Vestas has signed in China this week. Yesterday, it announced an unnamed customer had ordered 100MW (50 V90 2MW machines) for Shandong Province, China.
-|align = "center"|Windpower Monthly
-|-
-|align = "center"|3
-|align = "center"|19th April<nowiki>’</nowiki>11
-|'''Vestas,''' the world<nowiki>’</nowiki>s largest wind turbine manufacturer, has recently won a large contract from China Datang Corporation Renewable Power, said '''Vestas China''' Tuesday in Beijing. The contract includes an order for 25 two-megawatt wind turbines, which will be installed near the city of Hulunbuir in North China<nowiki>’</nowiki>s Inner Mongolia autonomous region. The turbines are scheduled to be delivered in the second quarter of 2011.
-|align = "center"|Factiva
-|-
-|align = "center"|4
-|align = "center"|11th April<nowiki>’</nowiki>11
-|Hull and Immingham (UK) are already the country<nowiki>’</nowiki>s busiest ports by freight volumes. Land at the docks could now become the hub for Britain<nowiki>’</nowiki>s wind revolution with Siemens, '''Vestas''' and Gamesa — giants of the global turbine manufacturing industry — all talking about locating factories there.
-|align = "center"|Factiva
-|-
-|align = "center"|5
-|align = "center"|31st March<nowiki>’</nowiki>11
-|'''Vestas '''said it was Britain<nowiki>’</nowiki>s commitment to the so-called Round 3 developments of huge offshore wind farms to create up to 32,000 megawatts of capacity — or up to a third of the nation<nowiki>’</nowiki>s potential power output — that had prompted it to develop the new V164 turbine. However, the company refused to commit itself to building a manufacturing plant in the UK to construct the turbines. Vestas sailed into controversy in 2009 when it closed Britain<nowiki>’</nowiki>s only wind turbine manufacturing plant — producing smaller onshore turbine on the Isle of Wight with the loss of 425 jobs.
-|align = "center"|Times
-|-
-|}
-<br>
-==Key Insights==
+==Key Findings==
+=== Major Players ===
+* [http://www.vestas.com/ Vestas Wind Energy Systems] and [http://www.ge.com/ General Electric] are the major players in wind energy generation technology.
+[[Image:Wind_Major_Players.png|center|thumb|700px|'''Major Players''']]
-*; Amendment in Chinese Renewable Energy Law results in tremendous Growth opprtunities for Vestas
+=== Key Patents ===
-:* In 2010, the Chinese government revised the Wind-Power Sector targets to 150 GW by 2020 and also '''abolished the 70% local content requirement'''; while continuing their policy for R&D support, Reduced Tax Rates and Tax Rebate on import of components. New requirements for manufacturers to be eligible for tax breaks, land use and government loans are suited for large turbine manufacturers.
+* The key patents in the field are held by [http://www.windpoweringamerica.gov/wind_installed_capacity.asp US Windpower], [http://www.oregon.gov/ENERGY/RENEW/Wind/windhome.shtml Oregon State] and [http://www.vestas.com/ Vestas Wind Energy Systems].
-:* '''972 MW order intake in 2010''' - Vestas’ order intake in China has quadrupled to a new record in 2010. It also had a record-high Chinese exposure in 2010 (19% of volume)
-:* In 2010, Vestas announced '''$50 million investment''' over 5-years period to develop its R&D facility in China.
-:* Vestas has also formed '''strategic relationships''' with leading Chinese players like Longyuan, Datang and Huaneng
-<br>
-*; Vestas favors US over emerging markets in Asia (excluding China)
+[[Image:wind_top_cited.png|center|thumb|700px|'''Key Patents''']]
-:* Vestas favors the Americas, especially the U.S., in its growth strategy given the '''growing legislative support''' for renewable energy sources in the area. Though only 6% of the U.S. has strong wind resources, these resources could supply 150% of the current U.S. energy consumption - but only if they were fully developed with turbines.
-:* Since the passing of the American Recovery and Reinvestment Act, by May of 2009 '''$118 million''' has been announced to support the wind industry. Notably, in April of 2009, through the Department of Energy (DOE), $93 million was allocated to support further development of wind energy in the U.S.
-<br>
-*; Move production closer to where the action is
+=== IP Activity ===
-:* Vestas has expanded production facilities heavily in US (Portland and Colorado) and China as these markets are growing the fastest and it intends to supply all its markets from domestic factories to offer cost-effective product and save on transportation.
+* Patenting activity has seen a very high growth rate in the last two years.
-<br>
+[[Image:ind_pat_act_3.png|center|thumb|700px|'''Year wise IP Activity''']]
-*; Restructuring workforce - Extensive local insight and understanding
+=== Geographical Activity ===
-:* In order to develop a global business, Vestas has started restructuring its workforce by increasing non-Danish nationals at management positions and increasing the number of women employees. At present, 49% of the management positions are held by non-Danish nationals, and among the top-3,000 positions, 19% are women.
+* USA, China, Germany, Spain, and India are very active in wind energy research.
-:* Vestas also aims to have many nationalities at all locations in order to create a truly global business, which also has extensive local insight and understanding.
+[[Image:wind_geographical_act.png|center|thumb|700px|'''Geographical Activity''']]
-<br>
-*; Strategic Partnership to enter new market
+=== Research Trend ===
-:* Al Kharafi Cham for Utilities Development Co. (MARAFEQ), Cham Holding’s arm for the development of power generation, water and wastewater treatment projects; and VESTAS Wind Systems Co. signed early May a strategic partnership to develop first wind energy in Syria including the submittal of a joint pre-qualification to the Public Establishment for Electricity Generation and Transmission (PEEGT) for the development of the first wind energy project in Syria. This project includes the construction and operation of a wind farm with a generation capacity of 50-100 MW at two sites; Al Sukhna and Al Hijana.
+* Around 86% patents are on controlling the doubly-fed induction generation(DFIG) which indicates high research activity going on in rating and controlling of the DFIG systems.
-<br>
-==Key Executives==
+=== Issues in the Technology ===
+* 86% of the patent on DFIG operation are focusing on grid connected mode of operation, suggesting continuous operation of the DFIG system during weak and storm winds, grid voltage sags, and grid faults are major issues in the current scenario.
-Vestas has 14 business units, all reporting directly to the Executive Management. The presidents of the individual business units are responsible for the general day-to-day management of their respective areas of responsibility.
+[[Image:Windenergyanalysis.jpg|center|1200px|thumb|'''Problem Solution Mapping''']]
-<br>
-{|border="2" cellspacing="0" cellpadding="4" width="70%" align="center"
+=== Emerging Player ===
-|align = "center" bgcolor = "#538ED5"|'''Name'''
+* [http://www.woodward.com/ Woodward] is a new and fast developing player in the field of DFIG technology. The company filed 10 patent applications in the field in year 2010, while it has no prior IP activity.
-|align = "center" bgcolor = "#538ED5"|'''Designation'''
+=<span style="color:#C41E3A">Like this report?</span>=
+<p align="center"> '''This is only a sample report with brief analysis''' <br>
+'''Dolcera can provide a comprehensive report customized to your needs'''</p>
+{|border="2" cellspacing="0" cellpadding="4" align="center" "
+|style="background:lightgrey" align = "center"  colspan = "3"|'''[mailto:info@dolcera.com <span style="color:#0047AB">Buy the customized report from Dolcera</span>]'''
 |-
-|Ditlev Engel
+| align = "center"| [http://www.dolcera.com/website_prod/services/ip-patent-analytics-services Patent Analytics Services]
-|President and CEO, Vestas Wind Systems A/S
+|align = "center"| [http://www.dolcera.com/website_prod/services/business-research-services Market Research Services]
+|align = "center"| [http://www.dolcera.com/website_prod/tools/patent-dashboard Purchase Patent Dashboard]
 |-
-|Henrik Nørremark
+|align = "center"| [http://www.dolcera.com/website_prod/services/ip-patent-analytics-services/patent-search/patent-landscapes Patent Landscape Services]
-|Executive Vice President and CFO, Vestas Wind Systems A/S
+|align = "center"| [http://www.dolcera.com/website_prod/research-processes Dolcera Processes]
+|align = "center"| [http://www.dolcera.com/website_prod/industries Industry Focus]
 |-
-|Anders Søe-Jensen
+|align = "center"| [http://www.dolcera.com/website_prod/services/ip-patent-analytics-services/patent-search/patent-landscapes Patent Search Services]
-|President, Vestas Offshore, Denmark
+|align = "center"| [http://www.dolcera.com/website_prod/services/ip-patent-analytics-services/alerts-and-updates Patent Alerting Services]
+|align = "center"| [http://www.dolcera.com/website_prod/tools Dolcera Tools]
 |-
-|Bjarne Ravn Sørensen
+|}
-|President, Vestas Control Systems, Denmark
+<br>
+=References =
+{|border="0" cellspacing="0" cellpadding="4" width="100%"
+|-valign="top"
+|'''Background References'''
+# [http://www.brighthub.com/environment/renewable-energy/articles/71440.aspx Wind Energy History]
+# [[Media:windenergy.pdf| Wind Energy]]
+# [http://windeis.anl.gov/guide/basics/index.cfm Wind Energy Basics]
+# [http://www1.eere.energy.gov/windandhydro/wind_how.html#inside How Wind Turbines Work]
+# [http://www.windpowertv.com/forum/index.php?topic=18.0 Different types of wind turbines]
+# [http://www.house-energy.com/Wind/Offshore-Onshore.htm Onshore Vs Offshore Wind Turbines]
+# [http://library.thinkquest.org/06aug/01335/wind%20Power.htm Wind Power]
+# [http://www.ehow.com/list_5938067_types-wind-farms-there_.html Types of Wind Farms]
+# [http://www.offshorewindenergy.org/ca-owee/indexpages/Offshore_technology.php?file=offtech_p2.php Offshore Technology]
+# [http://windsine.org/?act=spage&f=wind The Fundamentals of Wind Energy]
+# [http://windertower.com/ Winder Tower]
+# [http://www.thesolarguide.com/wind-power/wind-towers.aspx Wind Towers]
+# [http://guidedtour.windpower.org/en/tour/design/concepts.htm Wind Turbine Blades]
+# [http://www.wind-energy-the-facts.org/en/part-i-technology/chapter-3-wind-turbine-technology/evolution-of-commercial-wind-turbine-technology/design-styles.html Wind Turbine Design Styles]
+# [http://www.awewind.com/Products/TurbineConstruction/MainAssembly/RotorHub/tabid/81/Default.aspx Rotor Hub Assembly]
+# [http://www.gears-gearbox.com/wind-turbines.html Gearbox for Wind Turbines]
+# [http://guidedtour.windpower.org/en/tour/wtrb/yaw.htm The Wind Turbine Yaw Mechanism]
+# [http://guidedtour.windpower.org/en/tour/wtrb/yaw.htm The Wind Turbine Yaw Mechanism]
+# [[Media:windturbinegenerators.pdf| Wind Turbine Generators]]
+# [http://www.uni-hildesheim.de/~irwin/inside_wind_turbines.html Inside wind turbines]
+|'''Image References'''
+# [http://www.windsimulators.co.uk/DFIG.htm DFIG Working Principle]
+# [http://www.wwindea.org/home/index.php  Country share of total capacity]
+# [http://www.atlantissolar.com/wind_story.html Wind turbine principle]
+# [http://www.windturbinesnow.com/horizontalaxis-windturbines.htm Horizontal axis wind turbine]
+# [http://www.solarpowerwindenergy.org/2009/12/25/types-of-wind-turbines/ Vertical axis wind turbine]
+# [http://zone.ni.com/devzone/cda/tut/p/id/8189 Pitch control]
+# [http://zone.ni.com/devzone/cda/tut/p/id/8189 Yaw control]
+# [http://www.eco-trees.org/europes-biggest-onshore-wind-farm-goes-online/ Onshore Wind turbines]
+# [http://www.house-energy.com/Wind/Offshore-Onshore.htm Offshore wind turbines]
+# [http://www.solarpowerwindenergy.org/2010/04/02/parts-of-a-wind-turbine/ Wind turbine parts]
+# [http://www.windsolarenergy.org/map-of-best-locations-for-wind-power.htm Tower height Vs Power output]
+# [http://americanrenewableenergycorp.com/towers Tubular tower]
+# [http://www.mywindpowersystem.com/2010/03/wind-power-stats-quiet-critics/ Lattice tower]
+# [http://itgiproducts.com/energy/windTowers.asp Guy tower]
+# [http://itgiproducts.com/energy/windTowers.asp Tiltup tower]
+# [http://itgiproducts.com/energy/windTowers.asp Free stand tower]
+# [http://www.wind-energy-the-facts.org/en/part-i-technology/chapter-3-wind-turbine-technology/evolution-of-commercial-wind-turbine-technology/design-styles.html Single blade turbine]
+# [http://www.trendir.com/green/?start=15 Two blade turbine]
+# [http://www.china-windturbine.com/wind-turbines-blades.htm Three blade turbine]
+# [http://windturbinesforthehome.com/ Internal nacelle structure]
+# [http://syigroup.en.made-in-china.com/product/dbTQyzJOHYRi/China-Iron-Casting-Wind-Mill-Tower-Rotor-Hub.html Rotor hub]
+# [http://jiangyinzkforging.en.made-in-china.com/product/hewxIQjbgTpr/China-Wind-Turbine-Shaft-For-Wind-Power-Generator-ALIM2143-.html Shaft system]
+# [http://machinedesign.com/article/green-technology-inside-an-advanced-wind-turbine-0605 Gear box]
+# [http://www1.eere.energy.gov/windandhydro/wind_how.html Anemometer & Wind vane]
 |-
-|Finn Strøm Madsen
+|}
-|President, Vestas Technology R&D, Denmark
+=Contact Dolcera=
+{| style="border:1px solid #AAA; background:#E9E9E9" align="center"
 |-
-|Hans Jørn Rieks
+! style="background:lightgrey" | Samir Raiyani
-|President, Vestas Central Europe, Germany
 |-
-|Jens Tommerup
+| '''Email''': [mailto:info@dolcera.com info@dolcera.com]
-|President, Vestas China, China
 |-
-|Juan Araluce
+| '''Phone''': +1-650-269-7952
-|President, Vestas Mediterranean, Spain
+|}
-|-
-|Klaus Steen Mortensen
-|President, Vestas Northern Europe, Sweden
-|-
-|Knud Bjarne Hansen
-|President, Vestas Towers, Denmark
-|-
-|Martha Wyrsch
-|President, Vestas Americas, USA
-|-
-|Ole Borup Jakobsen
-|President, Vestas Blades, Denmark
-|-
-|Phil Jones
-|President, Vestas Spare Parts & Repair, Denmark
-|-
-|Roald Steen Jakobsen
-|President, Vestas People & Culture, Denmark
-|-
-|Sean Sutton
-|President, Vestas Asia Pacific, Singapore
-|-
-|Søren Husted
-|President, Vestas Nacelles, Denmark
-|-
-|}
-<br>

Difference between pages "Vestas Wind Systems A/S" and "Wind Energy"

Latest revision as of 01:54, 27 July 2015

Contents

Introduction

Read More?

Market Research

The History of Wind Energy

Global Wind Energy Market

Market Overview

Global Market Forecast

Market Growth Rates

Geographical Market Distribution

Country-wise Market Distribution

Country Profiles

China

India

Market Share Analysis

Global Market Share

Market Share - Top 10 Markets

Company Profiles

Major Wind Turbine Suppliers

Products of Top Companies

IP Search & Analysis

Doubly-fed Induction Generator: Search Strategy

Control Patents

Patent Classes

Concept Table

Thomson Innovation Search

Taxonomy

Sample Analysis

Patent Analysis

Article Analysis

Top Cited Patents

Top Cited Articles

White Space Analysis

Dolcera Dashboard

Key Findings

Major Players

Key Patents

IP Activity

Geographical Activity

Research Trend

Issues in the Technology

Emerging Player

Like this report?

References

Contact Dolcera

Navigation menu

Search