【摘要】 从转子参考轴d-q模型出发,研究同步坐标下的无刷双馈电机(BDFM)的数学模型,根据BDFM的特性,采用磁链定向的矢量变换控制技术,设计了一种新型的功率控制系统。该系统通过控制发电机的控制绕组进行交流励磁,实现变速恒频发电机有功、无功的解耦控制。同时,考虑到电机结构的复杂性以及电机参数随环境的可改变性,对功率环采用模糊控制,可以更好地增强系统的鲁棒性,从而实现最大风能捕获和高效发电运行。计算机仿真结果验证了控制策略的正确性和有效性。更多还原

【Abstract】 This paper analyses the mathematical model for BDFM(brushless doubly-fed machine) based on synchronous coordinates in the point of rotor speed d-q model.A new type of power control system is designed by using flux linkage oriented vector transformation control technology.This system realizes the decoupling control of active and reactive power of VSCF(variable speed constant frequency) generator by using the control windings of the generator to carry out the AC(alternating current) excitation.A fuzzy control is used for the power loop of the outer loop to further enhance the robustness of the system so that the high efficiency energy generation is achieved through the maximal wind energy capturing.Computer simulation results verify the correctness and effectiveness of this control strategy.更多还原