关键词: 控制器谐波；驱动电机；效率提升

Abstract: This study demonstrates the reasons for the low measure efficiency of the drive motor, it has important guidance and reference value to analyze and solve the problem of motor unit efficiency not up to standard.In this paper, the causes of harmonics and their influence on the performance of the motor are analyze theoretically, and the influence of harmonics on the output torque and efficiency of the motor is demonstrate by means of simulation analysis. Based on a new energy passenger car drive motor, combine with two controllers, the negative impact of harmonics on the efficiency of the motor is demonstrated through the analysis of the deviation value of the harmonic value difference of the controller and the measured motor efficiency. Finally, the necessity of harmonic suppression to improve the efficiency of the motor is illustrated, and the relevant feasible optimization measures are provided.

Key words: Controller harmonics; Drive motor; Efficiency improvement