A reduction method of cogging torque for IPMSM

Author

Kawaguchi, Y. ; Sato, T. ; Miki, I. ; Nakamura, M.

Author_Institution

Dept. of Electr. & Electron. Eng., Meiji Univ., Kawasaki, Japan

Volume

1

fYear

2005

fDate

27-29 Sept. 2005

Firstpage

248

Abstract

This paper describes a reduction technique of the cogging torque in an interior permanent magnet synchronous motor (IPMSM). IPMSM usually has the flux barrier for preventing the short circuit of magnetic flux near the magnet. The flux barrier can reduce the cogging torque, and therefore the shape of the flux barrier of IPMSM with concentrated winding is discussed in this study. To analyze the cogging torque for various shapes of flux barrier, the two dimensional finite element method is introduced. As a result, it is found that there exists the optimum shape of flux barrier that can obviously reduce the cogging torque.

Keywords

finite element analysis; machine windings; magnetic flux; permanent magnet motors; synchronous motors; torque; cogging torque reduction method; concentrated winding; flux barrier; interior permanent magnet synchronous motor; magnetic flux short circuit prevention; two dimensional finite element method; Forging; Magnetic analysis; Magnetic circuits; Magnetic flux; Permanent magnet motors; Permanent magnets; Rotors; Shape; Synchronous motors; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on

Print_ISBN

7-5062-7407-8

Type

conf

DOI

10.1109/ICEMS.2005.202522

Filename

1574755