基于滑模变结构的风力机变桨距控制研究

Variable Pitch Control of Wind Turbine Generator Base on Sliding Mode

根据风能的不确定性和风力发电机的系统有着很强的非线性特点,设计了滑模变结构控制器,对1台采用该控制策略的异步双馈发电机进行变桨控制,利用Matlab/simulink对其运行行为进行仿真研究,仿真结果表明,滑模变桨性能不仅能有效控制风力发电机的转速范围,而且能保持风力发电机在额定风速以上的最大功率输出。

According to the uncertainty of wind energy and the strong non-linear characteristics of wind power system,the sliding-mode variable structure controller was designed and applied to the variable pitch control of an asynchronous doubly-fed generator,which was simulated by Matlab/simulink.The simulation results show that the performance of sliding mode variable pitch control can not only effectively control the wind turbine speed range,but also maintain the maximum power output of the wind turbines at wind speed over rating.