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电动车用感应电机参数变化易引起电机振荡现象,文中以含微分运算的三相感应电机模型为基础,提出了一种具有转差频率控制的转子磁场定向矢量控制方法,给出了相关的理论推导及实验结果。该方法能够有效地抑制由于电机参数变化过大导致的电机振荡现象,能使电机可靠地运行于弱磁区域,可满足高功率密度、高转速电动车用感应电机的控制要求。实验结果验证了该方法的正确性及有效性。
The variation of the parameters of induction motor for electric vehicles can easily lead to the oscillation of the motor. Based on the three-phase induction motor model with differential operation, a rotor flux oriented vector control method with slip frequency control is proposed. Relevant theories Derivation and experimental results. The method can effectively restrain the motor oscillation phenomenon caused by the excessive change of the motor parameter, and can ensure the reliable operation of the motor in the weak magnetic region to meet the control requirements of the induction motor with high power density and high speed. The experimental results verify the correctness and effectiveness of the method.