The characteristics analysis and cogging torque optimization of a surface-interior permanent magnet synchronous motor


This paper proposes optimal stator skewed slot analytical method for cogging torque reduction in surface-interior permanent magnet synchronous motor(SIPMSM) and analyzes the characteristics of SIPMSM. The series-parallel equivalent magnetic circuit models(EMCMs) of SIPMSM is built based on the characteristics of magnetic circuits, which is used to design the basic electromagnetic parameters of SIPMSM. Analytical expressions of cogging torque are derived from applying analytical techniques. Stator skewed slot for cogging torque minimum is adopted, and the stator skewed slot pitch is confirmed based on the analytical expressions of the resultant cogging torque. The cogging torque, torque ripple, back electromotive force(back-EMF), power-angle characteristics, efficiency and power factor of SIPMSM are analyzed by establishing 3-dimensional finite element model(3-D-FED) of SIPMSM with stator skewed slot and straight slot. It is shown that the comprehensive performance of optimized SIPMSM is improved as confirmed by finite element analysis and analytical calculation results.

Publication DOI:
Divisions: Engineering & Applied Sciences
Additional Information: This article is listed as Open Access on the publisher's website:
Full Text Link:
Related URLs: https://ieeexpl ... rce=SEARCHALERT (Publisher URL)
PURE Output Type: Article
Published Date: 2018-12-31
Accepted Date: 2018-12-01
Authors: Si, Jikai
Zhao, Suzhen
Zhang, Lufeng
Cao, Ruiwu
Cao, Wenping (ORCID Profile 0000-0002-8133-3020)



Version: Published Version

| Preview

Export / Share Citation


Additional statistics for this record