Expectation and Review of Control Strategy of Wind Turbines Yaw System

Abstract

Abstract. In recent years China's wind power industry has developed rapidly. Yaw system is an important part of the wind power generation system. Its effectiveness not only affects the wind energy capture efficiency of the system, but also related to the safe operation of the wind power system. In this article, the working principle of the yaw system is described. And the current research status of control mode in China is commented. The function of the yaw system can be divided into two aspects, one is tracing wind accurately, the other is automatic untwisting. Research indicates that, using some new control strategy, such as hill-climbing control(HCC) algorithm, PLC algorithm, fuzzy control, static neural network and many kinds of other algorithm applied to the yaw system, can enhance the stability and robust of yaw system, and increase mechanical life of yaw system. However the technology for automatic untwisting has been ignored, researching new control strategy that can trace wind precisely and achieve automatic twisting is worthy of attention. Determine whether untwisting or not and complete action through the parameters in the algorithm above can improve the economy and stability of yaw system, create great value.

LSTM-NN Yaw Control of Wind Turbines Based on Upstream Wind Information

“…Frequent start-up and shutdown will cause damage to the yaw system and its associated components, which will affect the stable operation of the wind turbines and reduce the lifetime of the yaw system. Improving the yaw control strategy is therefore of great significance for improving the power capture of wind turbines, prolonging their overall life, realizing the safe and reliable operation of wind power generation systems, and reducing the cost of wind power generation [3]. The yaw control can be used for optimization at the wind farm level [4] and the single wind turbine level [2].…”