Optimization of the Magnetic Pole Shape of a Permanent-Magnet Synchronous Motor

Author

Zheng, Ping ; Zhao, Jing ; Han, Jianqun ; Wang, Jie ; Yao, Zhiyuan ; Liu, Ranran

Author_Institution

Harbin Inst. of Technol.

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2531

Lastpage

2533

Abstract

A kind of six-slot/four-pole permanent-magnet (PM) synchronous motor is very popular nowadays for the advantages of saving coppers and because it is easy to manufacture. The magnetomotive force (MMF) produced by the six-slot stator windings are not symmetrical under the four poles, and more harmonics exist in the air gap, which will increase the torque ripple and noise. In this paper the rotor structure is optimized from the aspects of magnetic-pole embrace, magnetic bridge, and magnetic-pole eccentricity to obtain better air-gap magnetic field distribution and torque curves

Keywords

magnetic devices; magnetic fields; permanent magnet motors; stators; synchronous motors; torque; air-gap magnetic field distribution; magnetic bridge; magnetic pole eccentricity; magnetic pole shape; magnetomotive force; permanent magnet synchronous motor; six-slot stator windings; torque ripple; Air gaps; Bridges; Copper; Magnetic fields; Magnetic noise; Manufacturing; Shape; Stator windings; Synchronous motors; Torque; Finite-element method (FEM); magnetic bridge; magnetic pole; permanent-magnet synchronous motor (PMSM);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.893631

Filename

4202883