Cogging Torque Optimization of Flux-Switching Transverse Flux Permanent Magnet Machine

In this paper, cogging torque characteristics in both single-phase and three-phase flux switching transverse flux permanent magnet machines (FS-TFPMM) are analyzed by 3-D finite element method (FEM). It is found that the cogging torque of the FS-TFPMM is significantly influenced by the ratios of sta...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2013-05, Vol.49 (5), p.2169-2172
Main Authors: Yan, Jianhu, Lin, Heyun, Feng, Yi, Zhu, Z. Q., Jin, Ping, Guo, Yujing
Format: Article
Language:English
Subjects:
Cogging
Cogging torque
Couplings
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Finite element analysis
Finite element method
Flux
flux switching
Forging
Magnetism
Materials science
Mathematical models
Optimization
Other topics in materials science
permanent magnet
Permanent magnets
Physics
Rotors
Stator cores
Three dimensional
Torque
transverse flux
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Summary:In this paper, cogging torque characteristics in both single-phase and three-phase flux switching transverse flux permanent magnet machines (FS-TFPMM) are analyzed by 3-D finite element method (FEM). It is found that the cogging torque of the FS-TFPMM is significantly influenced by the ratios of stator and rotor core circumferential widths to pole pitch, ks and kr . When kr > 1- ks , the cogging torque waveform has additional two zero-crossing points, whilst its amplitude is significantly reduced. The optimal ratios of ks and kr are selected to reduce the cogging torque and to maximize the permanent magnet flux linkage. A 380 W three-phase prototype is designed, manufactured, and tested to verify the optimization.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2013.2244855