Abstract
In this paper, a novel 6-stator-pole double-rotor hybrid excited axial switched-flux permanent magnet (DR-HEASFPM) machine is proposed for electrical vehicles. Based on 3-D finite element analysis, the influence of 10-, 11-, 13-, and 14-rotor-pole on the electromagnetic performance of DR-HEASFPM machine, including the magnetic field distribution, flux-linkage, back-EMF, flux regulation principles and capability, is comparatively investigated. The results show that the 6/10-, Ll-pole DR-HEASFPM machines exhibit higher PM flux-linkage and back-EMF. Moreover, the back-EMF of 6/11-pole machine is more sinusoidal and the flux-regulation capability is more excellent, which is suitable for wide speed-regulation application.
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