A wind turbine having a hydraulic blade pitch system

摘要

A wind turbine id disclosed having a rotor with at least two blades and a blade pitch system for controlling the pitch angle of said blades, the blade pitch system comprising for each of said blades a hydraulic blade pitch drive comprising one or more hydraulic actuators and two or more hydraulic accumulators which are exclusively dedicated to the provision of hydraulic pressure for operation of the hydraulic blade pitch drive for that blade.