基于复合控制的永磁同步电机电流谐波抑制策略  

Suppression Strategy of Current Harmonic in Permanent Magnet Synchronous Motor Based on Compound Control

作　　者：陈瑶 张钊源 冯鑫鹏 谢世瑞 赵朝会[1] CHEN Yao;ZHANG Zhaoyuan;FENG Xinpeng;XIE Shirui;ZHAO Chaohui(School of Electrical Engineering,Shanghai Dianji University,Shanghai 201306,China)

机构地区：[1]上海电机学院电气学院,上海201306

出　　处：《电机与控制应用》2022年第7期30-37,共8页Electric machines & control application

摘　　要：当电机转速发生变化时,重复控制(RC)器控制的谐振频率将偏离电流谐波的频率,系统的谐波抑制能力会降低。针对该问题,分析了永磁同步电机(PMSM)的电流谐波数学模型和谐波产生原因,介绍了传统RC原理,并在传统RC的基础上,引入Fal函数,构建了一种基于Fal函数的复合控制策略,使传统RC在稳态过程中具有更好的效果。同时,对传统RC的内模进行改进,并将其嵌入电流环,进一步提高复合控制器的谐波抑制能力。最后以一台5.5 kW PMSM作为研究对象进行仿真分析和试验验证,结果表明了该方法的有效性。With the motor speed changes,the resonant frequency of the repetitive control(RC)deviates from the frequency of the current harmonic,and the harmonic suppression ability of the system is reduced.Aiming at this problem,combing the mathematical model of permanent magnet synchronous motor(PMSM)current harmonic and the causes of harmonic,the repetitive control principle is introduced,and on the basis of the conventional repetitive control,a Fal function is introduced,a compound control strategy based on Fal function is built.Through these measures,traditional repetitive control in the process of steady state has a better effect.At the same time,the internal mode of the traditional repetitive control is improved and embedded into the current loop to further improve the harmonic suppression ability of the composite controller.Finally,a 5.5 kW PMSM is taken as the research object for simulation analysis and experimental verification.The simulation and experimental results show the effectiveness of the proposed method.

关 键 词：永磁同步电机 重复控制 Fal函数 谐波抑制 

分 类 号：TM341[电气工程—电机]