method for reducing torsional oscillations in the power train of a wind turbine.

摘要

"method for reducing torsional oscillations in the power train of a wind turbine". The present invention relates to a method for reducing torsional oscillations in the power train of a wind turbine in the event of grid loss. According to the method, after mains loss, a braking torque is applied to the power train over a period of time and said time period is determined as a function of the torsional resonance frequency. of the power train.