Phase unbalance compensation in moving-coil type permanent magnet linear synchronous motor

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Jung, Sang-Yong^a | Choi, Ho-Yong^a | Jung, Hyun-Kyo^{a; *} | Hahn, Song-Yop^a

Affiliations: [a] Electromechanics Laboratory, ENG420-040, School of Electrical Engineering, College of Engineering, Seoul National University, San 56-1, Shillim-Dong, Kwanak-Gu, Seoul, Korea

Correspondence: [*] Corresponding author: Sang-Yong Jung, Tel.: +82 2 880 7262; Fax : +82 2 878 1452; E-mail: jsyjsy2@snu.ac.kr

Abstract: The characteristics of the phase unbalance in a moving-coil type Permanent Magnet Linear Synchronous Motor(PMLSM) for travelling the reciprocating trajectory are presented. The phase unbalance caused at end coils, such as deficiency and asymmetry of each phase EMF, is thoroughly investigated. Moreover, a compensating method that can minimize such phase unbalance by adjusting the mechanical air-gap length is proposed, and its effectiveness is verified in a practical application.

Keywords: phase unbalance, end effect, linear synchronous motor

DOI: 10.3233/JAE-2004-565

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 213-218, 2004