Investigation of Auxiliary Poles Design Criteria on Reduction of End Effect of Detent Force for PMLSM

Author

Zhu, Yu-wu ; Lee, Sang-Gun ; Chung, Koon-Seok ; Cho, Yun-Hyun

Author_Institution

Electr. Eng., Univ. of Dong-A, Pusan

Volume

45

Issue

6

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

2863

Lastpage

2866

Abstract

The detent force in permanent magnet linear synchronous motor (PMLSM) is caused by the attraction between the permanent magnet (PM) and the iron core without input current. It can be divided into two components: the slot effect and the end effect. This paper proposes a novel technique to reduce the end effect of detent force using auxiliary poles. To investigate the auxiliary poles design criteria, we analyze the characteristics of the detent force according to the height, length, and position of the auxiliary poles by using the 2-D finite-element method (FEM). The numerical calculations and the experimental results prove that this proposed technique has a good effect on the reduction of the end effect of detent force.

Keywords

finite element analysis; linear synchronous motors; magnetic cores; permanent magnet motors; permanent magnets; 2D finite-element method; PMLSM; auxiliary pole design; detent force; end effect; iron core; permanent magnet linear synchronous motor; slot effect; Auxiliary poles; detent force; end effect; permanent magnet linear synchronous motor (PMLSM);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2009.2018778

Filename

4957801