In this paper, the magnetic gearing principle is extended to the flux-switching permanent magnet (FSPM) motor for its armature winding configuration design. First, the no-load flux density in motor air gap is qualitatively analytically calculated using the equivalent magnetic circuit method, so that the predominant space harmonic components (PSHCs) can be separated. Then, the slot vector graph can be drawn according to the pole-pair numbers and rotation directions of these PSHCs. Consequently, the armature winding configuration of a 12/10-pole FSPM motor is designed based on the slot vector graph using the conventional motor design method. In addition, two new 12/7-pole FSPM motors with the conventional non-overlapping concentrated and distributed winding are proposed, and the electromagnetic performances of the three motors are analyzed and compared. Finally, the analytical results are verified by the finite-element analysis and experimentation.
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Du et al. (2015) studied this question.
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