A Novel Cogging Torque Reduction Method for Interior-Type Permanent-Magnet Motor

Author

Kang, Gyu-Hong ; Son, Young-Dea ; Kim, Gyu-Tak ; Hur, Jin

Author_Institution

Res. Center, GEM-TECH Co., Ltd., Changwon

Volume

45

Issue

1

fYear

2009

Firstpage

161

Lastpage

167

Abstract

This paper presents a novel design method to reduce the cogging torque of interior-type permanent-magnet (PM) motor. In the design method, the optimal notches are put on the rotor pole face, which have an effect on the variation of PM shape or the residual flux density of PM. Through the space harmonic field analysis, the positions of notches are found, and the optimal shapes of notches are determined by using finite element method. The validity of the proposed method is confirmed by experiments.

Keywords

finite element analysis; harmonic analysis; permanent magnet motors; torque; cogging torque reduction method; finite element method; interior-type permanent-magnet motor; motor design method; motor residual flux density; notch position; rotor pole face; space harmonic field analysis; Design methodology; Finite element methods; Forging; Harmonic analysis; Permanent magnet motors; Reluctance motors; Rotors; Shape; Synchronous motors; Torque; Cogging torque; finite-element (FE) method (FEM); interior-type permanent-magnet (IPM) motor; notch;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/TIA.2008.2009662

Filename

4757393