Finite element analysis on torque fluctuation of PMDC motors induced by cogging and commutation

Author

Liu, Ruifang ; Yan, Dengjun ; Hu, Minqiang

Author_Institution

Sch. of Electr. Eng., Beijing Jiao Tong Univ., China

Volume

2

fYear

2003

fDate

9-11 Nov. 2003

Firstpage

747

Abstract

Permanent magnet DC (PMDC) motors have extensive field of application. While rotor moving, the variation of air-gap reluctance under PM pole causes cogging torque. The coil current varies during commutation period. The two factors cause torque fluctuation. Finite element analysis (FEA) is used to solve the fluctuation in this paper. The moving problem of rotor is analyzed by interpolation moving boundary method. Armature commutation rule is determined through taking account of practical brush width. The proposed method has been proved efficient and accurate after comparing the FEA results with measured data.

Keywords

DC motors; commutation; finite element analysis; interpolation; permanent magnet motors; rotors; torque; FEA; PM pole; air-gap reluctance; armature commutation rule; cogging torque; finite element analysis; interpolation moving boundary method; permanent magnet DC motor; Commutation; DC motors; Finite element methods; Fluctuations; Forging; Magnetic analysis; Permanent magnet motors; Reluctance motors; Rotors; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2003. ICEMS 2003. Sixth International Conference on

Conference_Location

Beijing, China

Print_ISBN

7-5062-6210-X

Type

conf

Filename

1274156