A Calculation Method for the On-Load Cogging Torque of Permanent Magnet Synchronous Machine

被引：16

作者：

Wang, Weiye ^{[1
]}

Ma, Hui ^{[1
]}

Qiu, Xin ^{[1
,2
]}

Yang, Jianfei ^{[1
,2
]}

机构：

[1] Nanjing Normal Univ, Sch Elect & Automat Engn, Nanjing 210046, Jiangsu, Peoples R China

[2] Jiangsu Key Lab 3D Printing Equipment & Mfg, Nanjing 210042, Jiangsu, Peoples R China

来源：

IEEE ACCESS | 2019年 / 7卷

基金：

中国国家自然科学基金;

关键词：

Cogging torque; cross magnetization; core saturation; permanent magnet synchronous machine; REDUCTION; MOTORS; RIPPLE;

D O I：

10.1109/ACCESS.2019.2929429

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a new method to calculate the cogging torque of the permanent magnet synchronous machine under load condition. Combined with the mathematical expression of the cogging torque, it is found that the cogging torque will be influenced by the load. In order to accurately analyze the torque ripple of the motor at low speed and high torque operation and make it possible to reduce the cogging torque under load condition, it is necessary to calculate the cogging torque accurately. A calculation method for the on-load cogging torque of the PMSM, which the cross magnetization and core saturation have been taken into consideration, is proposed in this paper. The finite element analysis (FEA) and field-oriented control (FOC) contribute to the method, which mainly consists of three parts: elimination of the reluctance torque, calculation of the average torque, and the ripple torque and the separation of the cogging torque. By using this method, the cogging torques of a 16-pole/24-slot PMSM under different load conditions has been calculated. The result shows a very good agreement between simulation and experiment, which verifies the feasibility and effectiveness of the proposed method.

引用

页码：106316 / 106326

页数：11

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