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

Yi Du, Gang Yang, Li Quan, Xiaoyong Zhu, Feng Xiao and Haoyang Wu
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Yi Du: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Gang Yang: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Li Quan: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Xiaoyong Zhu: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Feng Xiao: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Haoyang Wu: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China

Energies, 2017, vol. 10, issue 3, 1-14

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.

Keywords: flux-switching permanent magnet (FSPM) machine; linear machine; detent force reduction (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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