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Energies 2017, 10(3), 318; doi:10.3390/en10030318

Detent Force Reduction of a C-Core Linear Flux-Switching Permanent Magnet Machine with Multiple Additional Teeth

School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
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Author to whom correspondence should be addressed.
Academic Editor: Chunhua Liu
Received: 10 January 2017 / Revised: 2 March 2017 / Accepted: 2 March 2017 / Published: 7 March 2017

Abstract

C-core linear flux-switching permanent magnet (PM) machines (LFSPMs) are attracting more and more attention due to their advantages of simplicity and robustness of the secondary side, high power density and high torque density, in which both PMs and armature windings are housed in the primary side. The primary salient tooth wound with a concentrated winding consists of C-shaped iron core segments between which PMs are sandwiched and the magnetization directions of these PMs are adjacent and alternant in the horizontal direction. On the other hand, the secondary side is composed of a simple iron core with salient teeth so that it is very suitable for long stroke applications. However, the detent force of the C-core LFSPM machine is relatively high and the magnetic circuit is unbalanced due to the end effect. Thus, a new multiple additional tooth which consists of an active and a traditional passive additional tooth, is employed at each end side of the primary in this paper, so that the asymmetry due to end effect can be depressed and the detent force can be reduced by adjusting the passive additional tooth position. By using the finite element method, the characteristics and performances of the proposed machine are analyzed and verified. View Full-Text
Keywords: flux-switching permanent magnet (FSPM) machine; linear machine; detent force reduction flux-switching permanent magnet (FSPM) machine; linear machine; detent force reduction
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MDPI and ACS Style

Du, Y.; Yang, G.; Quan, L.; Zhu, X.; Xiao, F.; Wu, H. Detent Force Reduction of a C-Core Linear Flux-Switching Permanent Magnet Machine with Multiple Additional Teeth. Energies 2017, 10, 318.

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