双馈变速恒频风力发电系统矢量控制模型的研究

Study on Vector Control Model of Variable-speed Constant-frequency Double-fed Wind Power Generation System

利用定子磁链定向矢量控制方法,在同步坐标系下,双馈电机模型的基础上,建立了矢量控制方程式,通过控制转子电流的转矩分量和励磁分量来调节定子输出的有功功率和无功功率;并且利用Matlab/Simulink仿真软件,建立了系统的仿真模型,对系统的定子磁链矢量控制策略、风力机最大风能捕获和变速恒频运行方式进行了仿真实验研究,为机组的实际控制提供了参考和依据。

Using the vector control strategy of stator field orientation,at the base of the model of the doubly-fed machine on the synchronous coordinate,vector control formula is built.By controlling torque component and the excitation component of the rotor current,the active and reactive power which are exported by the stator are regulated.The simulation model of the system is founded by the software Matlab /Simulink.The vector control strategy of stator flux linkage,the capture of the maximal wind energy of wind turbine and operating mode of variable speed constant frequency are studied by the simulation experiment,provides reference and basis for the actual machine unit control.