doi:10.16186/j.cnki.1673-9787.2020.6.15

Received:2020/02/18

Revised:2020/04/16

Published:2020/11/15

Performance comparison and optimization of PMLSM with integral and fractional slot based on composite magnetic slot wedge

LIU Zhuli, XU Xiaozhuo, WAN G Xudong, GAO Yan, LI Yibo

School of Electrical Engineering and Automation， Henan Polytechnic University ，Jiaozuo 454000 ， Henan， China

Abstract:In order to improve the motor performance， and to reduce the cogging force and thrust ripple， a new type of composite magnetic slot wedge（ CMSW） composed of two different magnetic materials was proposed. According to the different forms of composite， the CMSW could be divided into upper and lower CMSW and left and right CMSW. The finite element model of permanent magnet linear synchronous motor（ PMLSM ） with integer slot （ 12S4P） and fractional slot （ 3S4P） windings was established. The electromagnetic characteristics of PMLSM with integer and fractional slot winding， such as slot force， permanent magnet loss， thrust and ripple were compared under single magnetic slot wedge and different CMSW. The results showed that CMSW was better than single magnetic slot wedge in suppressing motor thrust ripple， and the optimum combination form and fit size of CMSW in different winding forms were obtained. The finite element analysis results showed that the CMSW could significantly reduce thrust ripple， eddy current loss and improve the output performance of the motor.

Key words:permanent magnet linear synchronous motor;integral slot winding;fractional slot winding;compos ite magnetic slot wedge;thrust ripple;finite element

基于复合磁性槽楔的整数槽和分数槽PMLSM性能对比及优化_刘株利.pdf