In order to improve the wind energy capture efficiency and increase the power generation of wind turbines,an automatic correction algorithm for the yaw static error of doubly fed asynchronous wind turbines is proposed.By combining empirical algorithms,the real-time wind condition data col-lected by the wind vane was analyzed,and the range of static yaw error of the wind turbine was clarified.Introduce momentum blade element theory to calculate the yaw static error of doubly fed asynchronous wind turbines.Transforming the correction problem of yaw static error into an automatic control problem of generator speed,combined with fixed time theory,the construction of a sliding mode controller is com-pleted to achieve automatic correction of yaw static error in doubly fed asynchronous wind turbines.The experimental results show that the proposed method can effectively correct the static error of yaw under the premise of continuous stable control,which is of great significance for improving the performance,stabili-ty,and economic benefits of wind turbines.
关键词
风力发电机/双馈异步发电机/偏航静态误差/动量-叶素理论/滑模控制器
Key words
wind power generator/doubly-fed asynchronous generator/yaw static error/automatic correction/sliding mode controller
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