An approach to a suitable stator length for minimizing the detent force of permanent magnet linear synchronous motors

Author

Inoue, Masaya ; Sato, Kenji

Author_Institution

Dept. of Electro Mech. Syst., Mitsubishi Electr. Corp., Amagasaki, Japan

Volume

36

Issue

4

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

1890

Lastpage

1893

Abstract

This paper describes a technique for minimizing the detent force using the finite element method. The detent force of the whole stator core is the total of two magnetic forces arising at both side edges of a stator core. Computed results show the phase difference between the two magnetic forces. Therefore, we can cancel out the two forces by adjusting a stator length to minimize the detent force. The stator with the smooth formed edge shape is also contrived to reduce the detent force in the practical use. The detent force of this model is successfully minimized by proposed method

Keywords

finite element analysis; linear synchronous motors; machine theory; magnetic forces; permanent magnet motors; stators; brushless machines; detent force minimisation; finite element method; magnetic forces; permanent magnet linear synchronous motors; phase difference; smooth formed edge shape; stator core; stator length; two magnetic forces; Finite element methods; Force measurement; Magnetic analysis; Magnetic cores; Magnetic forces; Permanent magnets; Shape; Stator cores; Synchronous motors; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.877814

Filename

877814