US Patent 9140238 Method to control the operation of a wind turbine

A method to control the operation of a wind turbine above a wind speed threshold value and a wind turbine designed to execute the method are provided. Electrical output power of the wind turbine is produced by its rotating blades and fed into a grid, which is connected with the wind turbine. The wind turbine is controlled by a first control loop and a second control loop. The wind speed is determined and compared with a certain predefined wind speed threshold value. Wind turbulences are determined and compared with a predefined wind turbulence threshold value. The first control loop and the second control loop are activated when the wind speed reaches or exceeds the wind speed threshold value. The activated first control loop controls the output power dependent on the wind speed. The activated second control loop controls the rotational speed of the rotating blades dependent on the wind turbulences.