WIND TURBINE CONTROLLER WITH PITCH FEEDBACK CONTROL LOOP IN PARTIAL LOAD

摘要

The control of the power output of wind turbine generator that operates in a derated mode to generate a produced power output level lower than an available power level. A pitch system sets the blade pitch of a rotor to a pitch value based on the received power reference signal. A power system controls the produced power output level of the wind turbine to the requested power output level. Moreover, the blade pitch of the rotor is further controlled by a pitch feedback control loop that modifies the pitch value based on a difference between the produced power output level and the requested power output level.