内嵌式永磁同步电动机电感参数辨识

Inductance Parameter Identification of Interior Permanent Magnet Synchronous Motor

分析了永磁电机的同步电抗交叉饱和的特性,说明采用单变量拟合同步电抗的方法不能满足高精度实时转矩控制的要求,从而提出了自适应的参数在线参数辨识方法。仿真结果证明了参数辨识方法的有效性。在电动汽车中的实际应用验证了这种方法可以满足转矩控制的要求。

The characteristics of cross-saturation of synchronous reactance was analyzed, which was the main reason that the reactance from univariate fitting method was not very precise and cannot used in the real-time torque control of electric vehicle. An adaptive identification of synchronous reactance on-line was presented and the simulation results proved the validity of the algorithm. The applications in torque controlling of electric vehicle drive system verified the effectiveness.