The Estimation of Wind Turbine Pitch Angle Based on ANN

Variable-speed and constant-frequency (VSCF) pitch-controlled wind turbine is believed to be superior to other types of wind turbine due to its features such as high efficiency and ideal starting and braking performance, artificial neural networks (ANN) technology is adopted to predict pitch angle at real-time working condition, and to obtain more accurate pitch angle reference value. It enhances control precision of the entire pitch-controlled system. Pitch-controlled system, the very core of a large-scale wind turbine control system, is playing a very important role in the security, stability and efficient operation of the units.