Browse > Article

A Low Cogging Force Permanent Magnet Linear Motor Having 3 Phase 9 Pole 10 Slot Structure  

Youn, Sung-Whan (충북대 전기공학과)
Lee, Jong-Jin (Samsung DA연구소)
Koh, Chang-Seop (충북대 전기전자컴퓨터 공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.55, no.11, 2006 , pp. 547-554 More about this Journal
Abstract
The detent force of a permanent magnet linear motor(PMLM) consists of the end force and cogging force, and should be reduced for high precision purpose applications. The cogging force comes from the electromagnetic interaction between the permanent magnets and interior teeth(or the slots) of the stator, and of which the magnitude depends on the ratio of the numbers of the armature and permanent magnet poles as well as the geometrical shape of the permanent magnet and armature pole. In order to reduce the cogging force of a PMLM, this paper proposes a new configuration which has 9 permanent magnet poles and 10 armature winding slots. By theoretical investigation of the principle of cogging force generation and simulating using finite element method, the proposed PMLM configuration is proven to give much less cogging force than the conventional configuration which has 8 permanent magnet poles and 12 armature winding slots. A proper winding algorithm, modified (A, A, A) winding method, for the proposed configuration is also suggested when the proposed PMLM is operating as a 3 phase synchronous machine. A theoretical and numerical calculation shows that the proposed configuration makes slightly bigger back-emf and thrust force under same exciting current and total number of winding turns condition.
Keywords
Permanent magnet linear motor(PMLM); detent force; cogging force; thrust force;
Citations & Related Records
연도 인용수 순위
  • Reference
1 C. S. Koh, J. S. Seol, 'New cogging -torque reduction method for brushless permanent-magnet motors', IEEE Trans. on Magn., Vol. 39, No.6, pp, ？3503 - 3506, 2003   DOI   ScienceOn
2 Carl G. Jeans, Rupert J. Cruise, Charles F. Landy, 'Methods of detent force reduction in linear synchronous motors', IEEE International Conference on Electric machines and drives, IEMD'99, pp. 437 - 439, 1999
3 J.R.Hendershot, and TJE Miller, Design of brushless permanent magnet motor, Magna Physics Publications, 1994, Chapter '3
4 가와시마낀지， 툴극치를 가지는 전기자와 계자자석을 가지는 모우터， 대한민국특허청， 출원변호 특 1988-0007477
5 Leila Parsa, Lei Hao, Hamid A. Toliyat, 'Optimization of average and cogging torque in 3-phase IPM motor drives', IEEE Industry Applications Conference 2002, 37th lAS Annual Meeting, pp. 417 - 424, 2002
6 川原 敦志， 리니어 모타， 일본국특허청， 특허출원공개 번호 特閒 2004-364374(P2004-364374A)
7 Humio Tajima, Kunio Miyasjota, Motoya Itou, Akira Tamura, Takeo Konno, 'Analysis of cogging torque by finite element methods', 일본전기학회논문지, pp. 635 - 641, 1987
8 Z. Q. Zhu, David Howe, 'Influence of design parameters on cogging torque in permanent magnet machines', IEEE Trans. on Energy Conversion, Vol. 15, No.4, PP. 407 - 412, 2000   DOI   ScienceOn
9 M. Y. Kim, Y. C. Kim, G. T. Kim, 'Design of slotless-type PMLSM for high power density using divided PM', IEEE Trans. on Magn., Vol. 40, No.2, pp, 746 - 749, 2004   DOI   ScienceOn
10 K. C. Lim, J. K. Woo, G. H. Kang, J. P. Hong, and G. T. Kim, 'Detent force minimization techniques in permanent magnet linear synchronous motors', IEEE Trans. on Magn., Vol. 38, No.2, pp. 1157 - 1160, 2002   DOI   ScienceOn
11 Mohammad S. Islam, Sayeed Mir, Tomy Sebastian, 'Issues in reducing the cogging torque of mass-produced permanent magnet brushless DC motor', IEEE Trans. on Industry Applications, Vol. 40, No.3, pp. 813 - 820, 2004   DOI   ScienceOn
12 R. J. Cruise, C. F. Landy, 'Reduction of cogging forces in linear synchronous motors', AFRICON 1999 IEEE, Vol. 2, pp. 623 - 626, 1999   DOI
13 In-Soung Jung, Jin Hur, Dong-Seck Hyun, 'Performance analysis of skewed PM linear synchronous motor according to various design parameters', IEEE Trans. on Magn., Vol. 37, No.5, pp. 3653 - 3657, 2001   DOI   ScienceOn
14 I. S. Jung, S. B. Yoon, J. H. Shim, D. S. Hyun, 'Analysis of forces in a short primary type and an short secondary type permanent magnet. linear synchronous motor', IEEE Trans. on Energy Conversion, Vol. 14, No.4, pp. 1265 - 1270, 1999   DOI   ScienceOn
15 T. Yoshimura, J. J. Kim, M. Watada, S. Torii, D. Ebihara, 'Analysis of the reduction of detent force in a permanent magnet linear synchronous motor', IEEE Trans. on Magn., Vol. 31, No.6, pp. 3728-3730, 1995   DOI   ScienceOn
16 Masaya Inoue, Kenji Sato, 'An approach to a suitable stator length for minimizing the detent force of permanent magnet linear synchronous motors', IEEE Trans. on Magn., Vol. 36, No.4, pp. 1890 1893, 2000   DOI   ScienceOn
17 정인성，'개선된 수치해석 기법을 이용한 영구자석형 선형 동기전동기의 특성해석' 한양대학교 박사학위논문, 1999. 12
18 이종진, 연승환, 고창섭, '원통형 영구자석 선형 동기전 동기의 디텐트력 저감' 대한 전기 학회 논문지 B권, 55권 4호, pp. 209-215, 2006년 4월