.... Berg. 01 March 2001 01 July 2001 wind turbines turbogenerators machine control velocity control control system synthesis state feedback optimal control variable speed gear In the design of a wind turbine controller for a particular operating condition, it is common...

..., March 2001; final revision June 2001. Associate Editor: D. 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...