Design and analysis of a new flux-intensifying permanent magnet brushless motor with multilayer flux barriers | Zendy

Yang Shen | Zendy; Xiaoyong Zhu | Zendy; Zixuan Xiang | Zendy; Deyang Fan | Zendy; Wenye Wu | Zendy; Jianing Yin | Zendy

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Design and analysis of a new flux-intensifying permanent magnet brushless motor with multilayer flux barriers

Author(s) -

Yang Shen,

Xiaoyong Zhu,

Zixuan Xiang,

Deyang Fan,

Wenye Wu,

Jianing Yin

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4974061

Subject(s) - inductance , flux (metallurgy) , magnet , range (aeronautics) , magnetic flux , flux linkage , demagnetizing field , electrical engineering , finite element method , mechanical engineering , automotive engineering , voltage , control theory (sociology) , computer science , materials science , physics , engineering , induction motor , magnetic field , direct torque control , structural engineering , magnetization , composite material , control (management) , quantum mechanics , artificial intelligence , metallurgy

This paper proposes a new flux-intensifying permanent magnet brushless motor for potential application in electric vehicles. The key of the proposed motor is to adopt the concept of flux-intensifying effect, thus the preferable flux-weakening ability and extended speed range can be achieved. The usage of segmented and relatively thinner permanent magnet (PM) in the proposed motor contributes to the increase of d-axis inductance Ld. In addition, the multilayer flux barriers along q-axis flux path will effectively decrease q-axis inductance Lq. As a result, the unique feature of Ld>Lq can be obtained, which is beneficial to extending the speed range of the proposed motor. Furthermore, the flux-intensifying effect can reduce the risk of irreversible demagnetization in PMs. The electromagnetic performances of the proposed motor are analyzed and investigated in details by using the finite element methods, which demonstrate the excellent flux-weakening capability and wide speed range can be achieved in the proposed FI-PMBL motor

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