1. The World Wind Energy Association. 2014 Half-year Report. Available online: 〈http://www.wwindea.org/webimages/WWEA_half_year_report_2014.pdf〉.
2. 20% Wind Energy by 2030;Office of Energy Efficiency and Renewable Energy,2008
3. Wind Turbine Control Systems: Principles, Modeling and Gain Scheduling Design;Bianchi,2006
4. Wind Energy Handbook;Burton,2011
5. Johnson, K.E., Adaptive Torque Control of Variable Speed Wind Turbines, NREL/TP-500-36265, 2004.