Abstract
This article proposes a dual-stator switched flux consequent pole permanent-magnet (DS-SFCPM) machine with unequal length teeth and carries out optimal design of the DS-SFCPM machine. Compared with a conventional dual-stator switched flux permanent-magnet (SFPM) machine, it can be regarded as a combination of two different dual-stator machines, so as to significantly enhance the torque density, and has good flux-regulating capability (FRC) with field winding. First, the basic principle of the proposed DS-SFCPM is explained, and the torque-generating mechanism and flux-regulating performance are analyzed based on the superposition of the above two dual-stator machines. Then, the influence of the unequal length teeth on the torque density and FRC is analyzed, the evaluation indexes of optimization are also introduced, and the parameters of unequal length teeth and permanent magnets (PMs) are optimized by sensitivity analysis. Various finite-element analysis (FEA) simulation, optimization, and comparison studies of the proposed machine are performed. The results verified the effectiveness of the proposed structure.
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