双馈异步风力发电机矢量控制研究

The Research of Vector Control for Double-Fed Asynchronous Wind Turbine

根据交流励磁变速恒频风力发电系统的运行特性,将矢量控制技术应用于双馈异步风力发电机的控制。机侧变流器采用定子磁链定向矢量控制,网侧变流器采用电网电压定向矢量控制,2个控制器共同作用,其工作状态根据双馈异步风力发电机的运行状态自由切换。试验结果表明:本控制方法能实现功率的双向流动,保证了双馈异步风力发电机稳定的并网运行。

According to the operating characteristics of AC excitation VSCF wind power generation system, the vector control technology is used for the control of the doubly-fed asynchronous wind turbine. Stator flux oriented vector control is used for generator-side converter, grid voltage oriented vector control is used for grid-side converter, and the two controllers operates together. The working state based on doubly-fed induction wind turbine operation state switches freely. Experimental results show that the control method achieves power two-way flow and ensures the double-fed induction wind turbine stably grid-connected operation.