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Energies 2018, 11(1), 15; https://doi.org/10.3390/en11010015

Magnet Shape Optimization of Two-Layer Spoke-Type Axial Flux Interior Permanent Magnet Machines

School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
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Received: 20 November 2017 / Revised: 15 December 2017 / Accepted: 18 December 2017 / Published: 23 December 2017
(This article belongs to the Collection Electric and Hybrid Vehicles Collection)
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Abstract

In this paper, the two-layer spoke-type (TLST) axial flux interior permanent magnet (AFIPM) machine is proposed. Simple flux barriers are added to optimize the air gap flux density, in which way there is no need to change the surface of the rotor. The optimization principle is revealed and the advantages of the TLST AFIPM machine compared with the spoke-type (ST) AFIPM machine are clarified. An optimization design process based on magnetic equivalent circuit combined with idealized and improved air gap flux density waveform is proposed, in which way the calculation time is saved by avoiding an excess of finite element method (FEM) simulations. Finally, 3D FEM simulation is adopted to verify the optimization results. View Full-Text
Keywords: axial flux interior permanent magnet machine; air gap flux density; two-layer spoke-type permanent magnet; flux barrier axial flux interior permanent magnet machine; air gap flux density; two-layer spoke-type permanent magnet; flux barrier
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Chai, F.; Bi, Y.; Pei, Y. Magnet Shape Optimization of Two-Layer Spoke-Type Axial Flux Interior Permanent Magnet Machines. Energies 2018, 11, 15.

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