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Study on a long primary flux-switching permanent magnet linear motor for electromagnetic launch systems

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4 Author(s)
Lei Huang ; Sch. of Electr. Eng., Southeast Univ., Nanjing, China ; Haitao Yu ; Minqiang Hu ; Hexiang Liu

Based on the principle of rotational flux-switching permanent magnet machines, a novel double-sides long primary flux-switching permanent magnet linear motor is proposed for electromagnetic launch systems. Compared with traditional induction and synchronous linear machines used in EMLS, the proposed is more suitable for EMLS because of high thrust density and simple structure of the secondary. Firstly, the structure and operation principle of the proposed FSPMLM are given and analyzed. Secondly, considering the end effect, the every thrust components are analyzed and derived, and the optimal method are obtained. Two-dimensional (2-D) finite element method (FEM) is used to investigate the dynamic electromagnetic characteristics of the FSPMLM and the process of electromagnetic launch. In addition, a single-side FSPMLM is employed to validate the thrust performance of proposed machine.

Published in:

Electromagnetic Launch Technology (EML), 2012 16th International Symposium on

Date of Conference:

15-19 May 2012