基于改进的重复控制永磁同步电机谐波电流抑制方法  

Harmonic Current Suppression Method of PMSM Based on Improved Repetitive Control

作　　者：黄慈梅 赵小坤 夏铸亮 刘伟 廖展图 HUANG Cimei;ZHAO Xiaokun;XIA Zhuliang;LIU Wei;LIAO Zhantu(GAC Automotive Research&Development Center,Guangzhou Guangdong 511434,China)

机构地区：[1]广州汽车集团股份有限公司汽车工程研究院,广东广州511434

出　　处：《汽车零部件》2022年第4期6-10,共5页Automobile Parts

摘　　要：严重的谐波电流会影响驱动电机系统的性能,如增加损耗、产生转矩波动,甚至导致控制不稳定等。针对此问题,提出了一种改进的重复控制方法。该方法通过利用傅里叶分析对指定次数的谐波电流进行提取、信号重构与角度补偿而产生d、q轴电压的补偿分量,叠加在原有d、q轴电压给定值上,共同作用于永磁同步电机,实现谐波电流抑制。为了验证该方法,对45 kW的永磁同步电机控制系统进行了试验。结果表明:该方法在较高电流频率内都能有效地抑制d、q轴的电流脉动,相比传统的重复控制,扩大了适用范围。The performance of electric drive system could be deteriorated by serious harmonic current,such as increase loss,generate torque ripple and confused control stability.To solve this problem,an improved repetitive control method was proposed.In this method,the compensation components of d-axis and q-axis voltage were generated by extracting the harmonic current of a specified number of times,signal reconstruction and angle compensation by using Fourier analysis,which were superimposed on the original given values of d-axis and q-axis voltage,and acted together on the permanent magnet synchronous motor to suppress the harmonic current.A 45 kW permanent magnet synchronous motor control system was tested to verify this method.The results show that this method can effectively suppress the current pulsation of d-axis and q-axis in higher current frequency,and expand the application range compared with the traditional repetitive control method.

关 键 词：重复控制 永磁同步电机 傅里叶分析 信号重构 角度补偿 

分 类 号：TM351[电气工程—电机]