Pitch Systems

An electrical pitch system essentially consists of the pitch drives, the inverter and the pitch control. In addition, there are the accumulators and ultra-caps as a back-up system so that a turbine can be safely driven out of the wind even in the event of a grid failure.

In terms of power control, pitch systems are crucial for turbine performance because they turn the rotor blades as optimally as possible into the wind, depending on the wind speed and direction. The pitch angle increases with increasing wind speed and influences the lift force of the rotor blades in such a way that the wind turbine remains constantly in the range of its rated power.