Abstract
In this paper, the power factor (PF) characteristic for a flux-modulated permanent magnet (FMPM) motor has been analyzed and investigated. To obtain high PF FMPM motor, the magnetic source topologies effect is analyzed based on flux-modulated principle. Firstly, the PF calculation method of the FMPM motor is derived, and some key parameters affecting the PF are analyzed theoretically. Secondly, compared and analyzed the PF from perspective of magnetic source topologies (MSTs) effect, the initial model is determined. And some key parameters are designed and the FMPM performances are evaluated. Finally, research results show that a FMPM motor with surface-embedded PM topology and 18-slot 28-pole has high PF and torque capacity. Moreover, this paper provides guidance for the same design to gain high PF from perspective of magnetic source topologies effect.
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