基于双同步坐标的无刷双馈风力发电系统的最大风能追踪控制

建立了包含风力机、齿轮变速箱和无刷双馈电机的无刷双馈风力发电系统整体模型。从转子在参考坐标下的d-q模型出发，研究了基于双同步坐标的无刷双馈电机的数学模型。根据无刷双馈电机的特性，采用磁链定向的矢量变换控制技术设计了一种新型功率控制系统。该系统通过控制发电机的控制绕组进行交流励磁，进而实现变速恒频发电机的有功、无功解耦控制，并最终实现了捕获最大风能的高效性和有效性。

Maximal Wind Energy Tracing Control for Brushless Doubly-Fed Wind Turbine Based on Dual Synchronous Coordinates

A model which includes wind turbine, gear-box and brushless doubly-fed machine(BDFM)for brushless doubly-fed wind generation system is presented . Starting from d-q model of rotor under reference coordinate, a mathematical model of brushless doubly-fed wind turbine based on dual synchronous coordinates is researched. According to the characteristics of brushless doubly-fed wind turbine and adopting flux linkage oriented vector transformation control technology, a new type of power control system is developed. By means of controlling the control winding of wind turbine this control system the AC excitation is implemented, and then the decoupling control of active and reactive power for variable speed constant frequency (VSCF) wind turbine is realized, eventually the generating operation mode with high efficiency that can capture maximal wind energy is come true. Simulation results verify the availability and validity of the proposed control strategy.