..., March 3 2003; final revision, June 30, 2003. Associate Editor: D. Berg. 03 March 2003 30 June 2003 26 11 2003 variable speed gear wind turbines state-space methods torque control machine control fatigue control system synthesis Variable-speed wind turbine...

... Energy Division December 20, 2002; final revision, June 26, 2003. Associate Editor: D. Berg. 20 December 2002 26 June 2003 26 11 2003 wind power plants time series variable speed gear reactive power compensation Utilities are striving to understand the impact...

... Solar Energy Division February 27, 2003; final revision, July 15, 2003. Associate Editor: D. Berg. 27 February 2003 15 July 2003 26 11 2003 wind turbines rotors wind atmospheric turbulence fatigue mechanical variables control variable speed gear torque Much...

... variable speed gear In the design of a wind turbine controller for a particular operating condition, it is common to treat the turbine as a time-invariant system. As such, the variation in dynamic properties as each blade rotates is ignored. Gain-scheduling techniques extend this basic principle...

.... Berg. 01 March 2001 01 June 2001 wind turbines aerodynamics rotors variable speed gear turbogenerators machine theory Variable-speed wind turbines operating in turbulent winds can experience large fluctuations in both aerodynamic power and loads over the rotor lifetime...