volume | PIER Journals

Abstract

This study presents a structure design methodology to analyze the operational efficiency of a flux switching permanent magnet machine utilizing non-oriented electrical steel materials. First, iron losses of non-oriented electrical steel materials assembled by bonding and welding stacking methods ware tested, and the comparison results demonstrated that the bonded stator core exhibited lower iron losses than the welded stator counterpart. Then, the proposed non-oriented electrical steel material 35SW360 was implemented in the straighted-rotor core of flux switching permanent magnet machine, and the simulation results shown that both the amplitudes and harmonics of induced electromotive force with 35SW360 was almost identical to the standard non-oriented electrical steel material DW360_50. Finally, prototype flux switching permanent magnet machine with straighted-rotor and skewed-rotor including above two non-oriented electrical steel materials was manufactured and tested. Both the simulation analysis and hardware test results revealed that the flux switching permanent magnet machine with skewed-rotor achieved higher efficiency than the straighted-rotor design. Consequently, the proposed non-oriented electrical steel material 35SW360 and skewed-rotor design illustrate a potential solution for efficiency improvement of flux switching permanent magnet machine.

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Dr. Zhongxian Chen

Dr. Lei Huang

Dr. Mingjie Wang

Dr. Hongxing Zheng