Patent ID: 8618684

Claim:
A method for operating a wind turbine, wherein the wind turbine has a rotor having at least one rotor blade which can be adjusted in its blade pitch angle (Î²), a generator connected to the rotor for generating electrical power and at least one measurement unit for capturing an actual value of a variable representative of a rotational speed of the generator, wherein a set-point for a generator torque (M G ) is provided as a function of a rotational speed (n) and the set-point is corrected as a function of a parameter for an air density (Ï), said method comprising the steps of: capturing an actual value of a variable representative of a rotational speed of the generator (n G ); providing a set-point for the generator torque (M G ) as a function of the captured actual value of the variable representative of the rotational speed of the generator (n G ); correcting the set-point for the generator torque as a function of a parameter for the air density (Ï); capturing a value for the blade pitch angle (Î²); and, increasing the set-point for the generator torque (M G ) when the captured value for the blade pitch angle (Î²) exceeds a predetermined minimum value (Î² min ) and the set-point for the generator torque (M G ) has been corrected on the basis of the parameter for the air density (Ï).