电动车用永磁同步电机定子谐波优化控制
摘要：针对电动车用永磁同步电机传统控制策略下电机定子含有高次谐波的问题，提出了通过反电势补偿来抑制电流畸变的改进控制方法。在传统电流转速双闭环控制框架的前提下，通过对高次谐波分量进行提取，加入高次谐波电压反馈环节，实现了对定子电流的优化，抑制了电机转矩脉动，提高电动汽车运行的平稳性。在Matlab/Simulink下进行仿真实验，通过分析高次谐波电流波形和转矩波形，证实显著抑制了电机定子电流中的高次谐波，验证该控制算法的有效性。
关键词：
永磁同步电机；电压反馈；谐波优化；转矩脉动
DOI：10.15938/j.jhust.2018.05.011
中图分类号： TM35
文献标志码： A
文章编号： 1007-2683（2018）05-0062-06
Stator Harmonic Optimal Control of Permanent Magnet
Synchronous Motor in Electric Vehicle
WANG Shuo，WANG Xudong，JIN Ningzhi，LIU Yubo，XIE Rui
（School of Electrical and Electronic Engineering，Harbin University of Science and Technology，Harbin 150080，China）
Abstract：For the problem of harmonics in the motor stator current under the traditional control strategy of the permanent magnet synchronous motor （PMSM），an improved control method of suppressing current distortion by voltage compensation is proposedUnder the premise of the traditional dual feedback control frame， the highorder harmonic component is extracted and the harmonic feedback is added to realize the optimization of the stator current，the torque ripple is restrained and the smoothness of electric vehicle running is improvedBy analyzing the high harmonic current waveform and torque waveform under the Matlab/Simulink environment simulation experiment， confirmed that the method significantly inhibited the motor stator current harmonics and validate the effectiveness of the proposed control algorithm.
Keywords：permanent magnet synchronous motor；voltage feedback；harmonic optimization；torque ripple
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