Flux-Switching Permanent Magnet Machine with Phase-Group Concentrated-Coil Windings and Cogging Torque Reduction Technique

Jung-Woo Kwon, Jin-hee Lee, Wenliang Zhao and Byung-Il Kwon
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Jung-Woo Kwon: Department of Electronic Systems Engineering, Hanyang University, Ansan-si 426-791, Gyeonggi-do, Korea
Jin-hee Lee: Department of Electronic Systems Engineering, Hanyang University, Ansan-si 426-791, Gyeonggi-do, Korea
Wenliang Zhao: School of Electrical Engineering, Shandong University, Jinan 250061, Shandong, China
Byung-Il Kwon: Department of Electronic Systems Engineering, Hanyang University, Ansan-si 426-791, Gyeonggi-do, Korea

Energies, 2018, vol. 11, issue 10, 1-11

Abstract: We herein propose a novel high-torque-density flux-switching permanent magnet machine (FSPMM) which adopted phase-group concentrated-coil (PGCC) winding and a cogging torque reduction technique. The PGCC winding was applied to increase the torque density. In order to maximize the torque of the FSPMM that utilizes the PGCC windings, the performance according to stator slots/rotor poles combinations were compared. A machine which had 12 stator slots and 13 rotor poles (12S13P) was selected for its top average torque value. However, the 12S13P PGCC FSPMM contains high cogging torque that must be reduced. The cogging torque reduction technique is applied, and the parameters used in the technique are further optimized to achieve the target average torque, while suppressing the cogging torque as much as possible. The optimization process was performed with a collaboration of the genetic algorithm and Kriging method. The analysis results of the optimized design exhibited huge reductions in the cogging torque and eventually in the torque ripple from the initial machine, with reasonable average torque reduction. The entire work was evaluated experimentally using a manufactured prototype.

Keywords: flux-switching machine; concentrated winding; cogging torque; permanent magnet machine; finite element method (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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