基于双级矩阵变换器的无刷双馈风力发电系统仿真研究

Simulation Study of Brushless Doubly-fed Machine Wind Turbine Generation System Based on Two-stage Matrix Converter

从转子速旋转坐标模型出发,研究了同步坐标下无刷双馈电机的数学模型。采用基于功率绕组定子磁链定向的矢量控制策略,运用最大风能捕获原理,建立无刷双馈电机风力发电系统仿真模型。同时提出一种基于d-q坐标系下的双级矩阵变换器输出电压闭环控制方案,以优化系统中变频器的控制。仿真验证了模型与控制策略的可行性和有效性。

Using rotor d-q model as a start point, the mathematical model for brushless doubly-fed machine （BDFM） based on synchronous reference frame was analyzed. Applying stator flux-oriented vector control technology, and adopting maximal wind energy capturing mechanism, the simulation model of BDFM wind generation system was obtained. To optimize the control scheme of the converter for the system, an output voltage closed loop strategy based on synchronous rotating coordinate for two-stage matrix converter was proposed. Simulation results verify the validity of the model and proposed control schemes.