Optimal design of permanent magnet linear synchronous motor for ultra low force pulsations

Issue title: Selected Papers from the 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011)

Article type: Research Article

Authors: Wang, Dao-Han^a | Zhu, Yu-Wu^{a; *} | Lee, Sang-Geon^a | Cho, Yun-Hyun^a

Affiliations: [a] Department of Electrical Engineering, Dong-A University, Pusan, Korea

Correspondence: [*] Corresponding author: Yu-Wu Zhu, Department of Electrical Engineering, Dong-A University, 840 Hadan 2-Dong, Saha-Gu, Pusan 604714, Korea. Tel.: +82 51 200 6952; Fax: +82 51 200 7743; E-mail: [email protected]

Abstract: The inherent drawback of iron-core type permanent magnet linear synchronous motor (PMLSM) is detent force that is dependent on several major factors such as pole-arc to pole-pitch ratio of magnet, slot clearance, and skewing. To minimize the detent force, this paper proposes a structure optimization using the combined computation of two dimensional (2-D) finite element method (FEM) and response surface methodology (RSM). The RSM, that is a collection of the statistical and mathematical techniques, is utilized to predict the global optimal solution based on the FEM calculated results of the detect forces for different combinations of factors. With the help of the combined computation the high capacity iron-core type PMLSM with more than 12000 N propulsion forces only contains less than 3 N detent forces.

Keywords: Permanent magnet linear synchronous motor, detent force, response surface method, optimization

DOI: 10.3233/JAE-2012-1566

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 965-971, 2012