Patent ID: 7586205
Filing Date: 2009-09-08
Classification: F03D,F05B,H02P,Y02E

Abstract:
1. Method for the regulation of the rotational speed ( 52 ) of a rotor ( 11 , 11 ′) of a wind turbine ( 10 ) with a generator ( 12 ) and at least one rotor blade ( 15 , 15 ′), wherein a blade angle ( 54 ) (pitch) of the rotor blade ( 15 , 15 ′) is provided as a first set value and the torque ( 51 ) of the generator ( 12 ) is provided as a second set value, comprising the following steps: Providing a first rotational speed target value ( Calculating a second rotational speed target value ( Regulating rotational speed of the rotor by changing blade angle using the blade angle control or regulation device Regulating rotational speed of the rotor of the generator by changing the torque using the torque control or regulation device and in full load of the wind turbine the rotational speed of the rotor is regulated by changing the blade angle using the blade angle control or regulation device and in partial load of the wind turbine the rotational speed of the rotor is regulated by changing the torque of the generator using the torque control or regulation device.