一种抑制电动汽车转速抖动的方法

A Method to Suppress the Speed Jitter of Electric Vehicles*

永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)具有效率高、成本低、转速范围广等优点,在电动汽车领域得到广泛应用。在电机系统运行过程中,电机转速波动的发生主要由于系统内部参数变化和外部工况发生改变,文章结合实际情况采用电流谐波补偿控制策略抑制电机转速波动,通过MATLAB/Simulink软件搭建永磁同步电机系统仿真模型及实际测试来验证该控制策略的有效性。

Permanent magnet synchronous motor(PMSM)has the advantages of high efficiency,low cost and wide speed range,and is widely used in the field of electric vehicles.In the process of motor system operation,the occurrence of motor speed fluctuation is mainly due to the change of internal parameters of the system and the change of external working conditions,this paper combines the actual situation by using the current harmonic compensation control strategy to suppress the motor speed fluctuation,and the effectiveness of the control strategy is verified by the simulation model and practical test of permanent magnet synchronous motor system built by MATLAB/Simulink software.