发明名称 Wind turbine generator and blade pitch angle control method thereof
摘要 The present invention provides a wind turbine generator and a blade pitch angle control method thereof in which an aerodynamic imbalance of a wind turbine rotor at the time of shutdown is further reduced, the maximum load of a wind turbine is further reduced, and the wind turbine generator can be reduced in weight and cost. The wind turbine generator includes a collective pitch angle controller 11 that produces a collective pitch angle demand that is common to blade pitch angles of wind turbine blades, an individual pitch angle producing unit 13 that produces an individual pitch angle demand inherent in each wind turbine blade, multipliers 21 to 23 that multiply the individual pitch angle demand by the individual pitch angle gain; an individual pitch angle gain producing unit 14, and adder 24 to 26 that add collective pitch angle demands to the output of the multipliers 21 to 23 and supply the same to pitch actuators 31 to 33 inherent in the wind turbine blades. When shutdown is performed, the individual pitch angle gain is adjusted such that an individual pitch angle gain is reduced gradually and reaches to zero by the individual pitch angle gain producing unit 14 after first set time.
申请公布号 US8217524(B2) 申请公布日期 2012.07.10
申请号 US20100768329 申请日期 2010.04.27
申请人 NAKASHIMA TAKUMI;BABA MITSUYA;HAYASHI YOSHIYUKI;IDE KAZUNARI;MITSUBISHI HEAVY INDUSTRIES, LTD. 发明人 NAKASHIMA TAKUMI;BABA MITSUYA;HAYASHI YOSHIYUKI;IDE KAZUNARI
分类号 F03D9/00;H02P9/04 主分类号 F03D9/00
代理机构 代理人
主权项
地址
您可能感兴趣的专利