Patent ID: 7586205

Claim:
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 ( 28 ) as the input value for a blade angle control or regulation device ( 32 ); and Calculating a second rotational speed target value ( 29 ), as the input value for a torque control or regulation device ( 33 ), wherein the first and the second rotational speed target value ( 28 , 29 ) can be different from each other, wherein the first and the second rotational speed target value ( 28 , 29 ) are different from each other in a transition area from partial load and full load of the wind turbine; and 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.