Analysis of permanent magnet linear synchronous motor for advanced control

Issue title: Selected Papers from the 13th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2007)

Article type: Research Article

Authors: Zhu, Yu-Wu^a | Kim, Do-Sun^a | Moon, Ji-Woo^a | Cho, Yun-Hyun^{a; *}

Affiliations: [a] Department of Electrical Engineering, Dong-A University, 840 Hadan 2-Dong, Saha-Gu, Pusan 604714, Korea

Correspondence: [*] Corresponding author. Tel.: +82 51 200 7742; Fax: +82 51 200 7743; E-mail: yhcho@dau.ac.kr

Abstract: A permanent magnet linear synchronous motor (PMLSM) is most suitable for fast, high-precision dynamic control systems. However, a significant drawback of PMLSM is the thrust ripple that deteriorates the performance of the drive system. This paper first presents a simple design for a PMLSM. Next, the thrust ripple is predicted by the finite element method (FEM) and it is fitted by a Fourier series using a curve fitting method. Finally, an advance field oriented control (FOC) method is used to compensate this thrust ripple by injecting an appropriate current. The effectiveness of this proposed thrust ripple suppression method is verified by the numerical results.

Keywords: Permanent magnet linear synchronous motor, detent force, field oriented control, fourier series curve fitting method, current compensation

DOI: 10.3233/JAE-2008-986

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 28, no. 1-2, pp. 283-289, 2008