Changes
/* Key Findings */
==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''']]
=== Key Patents ===
* 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].
[[Image:wind_top_cited.png|center|thumb|700px|'''Key Patents''']]
=== IP Activity ===
* Patenting activity has seen a very high growth rate in the last two years.
[[Image:ind_pat_act_3.png|center|thumb|700px|'''Year wise IP Activity''']]
=== Geographical Activity ===
* USA, China, Germany, Spain, and India are very active in wind energy research.
[[Image:wind_geographical_act.png|center|thumb|700px|'''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.
[[Image:Windenergyanalysis.jpg|center|1200px|thumb|'''Problem Solution Mapping''']]
=== Emerging Player ===
* [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.
