ROTATIONAL SPEED CONTROL OF A WIND TURBINE BASED ON ROTOR ACCELERATION

摘要

It is described a method for controlling the rotational speed of a rotor ofa wind turbine in particular at high wind speeds. The described methodcomprises(a) determining a rotor acceleration value, wherein the rotor accelerationvalue iscaused by a temporal change of the rotational speed of the rotor, and (b)controllingthe rotational speed of the rotor as a function of the rotor accelerationvalue. It isfurther described a control system for controlling the rotational speed of arotor of awind turbine, a wind turbine being equipped with such a control system and toacomputer program, which is adapted for controlling and/or for carrying out thementioned rotational speed control method.