A harmonic current injection method for electromagnetic torque ripple suppression in permanent-magnet synchronous machines

被引：12
作者：
Chen, Zhenfei [1 ,2 ]
Li, Zhixin [3 ]
Ma, Hongzhong [1 ,2 ]
机构：
[1] Hohai Univ, Coll Energy & Elect Engn, 8 Focheng West Rd, Nanjing 211100, Jiangsu, Peoples R China
[2] Minist Educ, Res Ctr Renewable Energy Generat Engn, Nanjing, Jiangsu, Peoples R China
[3] Jiangsu Elect Power Co, Elect Power Sci Res Inst, Nanjing, Jiangsu, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS | 2017年 / 53卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Back-EMF harmonics; harmonic current injection; electromagnetic torque ripple; permanent-magnet synchronous machine (PMSM);
D O I：
10.3233/JAE-160056
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Electromagnetic torque model is built in this paper for permanent-magnet synchronous machine (PMSM) with non-sinusoidal back electromotive force (back-EMF) and current. Electromagnetic torque is divided into four parts depending on the different combinations of fundamental and harmonic component. Effects of current harmonic order, amplitude and initial angle on average torque and torque ripple are investigated based on the mathematic model. Desired harmonic parameters are obtained from the analysis, in order to suppress the torque ripple as much as possible. Further, a method for reducing the 5th and 7th harmonic components of torque ripple is proposed, according to the characteristics of back-EMF harmonic distribution. The proposed method is greatly simplified and more feasible by only injecting 5th and 7th harmonic currents. The theoretical analysis validity has been proved by finite element (FE) simulation, and the FE results show that torque ripple would be more effectively reduced by injecting proper harmonic current than weakening it merely.
引用
收藏
页码：327 / 336
页数：10
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