Hybrid-excited flux-switching machines based on permanent magnet (PM) flux-switching machines were proposed to achieve improved torque-speed characteristics. However, due to the reduction of PM volume, decreases in torque density and efficiency are usually inevitable. Thus, it is necessary to make a comprehensive comparison between the dual-three-phase hybrid-excited flux-switching machines and their PM flux-switching counterparts. To obtain a full understanding of flux-switching machines, PM flux-switching machines with U-shaped stator cores and alternate-pole magnets or C-shaped stator cores are considered. From the perspective of the frequency domain, this paper not only gives a comprehensive evaluation and comparison of the above-mentioned six flux-switching machines, but also reveals the theoretical mechanism that results in their different electromagnetic behavior in a unified way by the general field modulation theory, which is the main contribution of this paper.

中文翻译：

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双三相磁通切换机拓扑和电磁性能的定量评估


提出了基于永磁体（PM）磁通切换机的混合励磁磁通切换机，以实现改进的扭矩-速度特性。然而，由于永磁体体积的减小，扭矩密度和效率的降低通常是不可避免的。因此，有必要对双三相混合励磁磁通切换电机与永磁磁通切换电机进行全面比较。为了充分了解磁通开关机，需要考虑具有 U 形定子铁芯和交替极磁体或 C 形定子铁芯的永磁磁通开关机。本文从频域角度出发，不仅对上述六种磁通切换机进行了综合评价和比较，而且通过一般场统一揭示了导致它们不同电磁行为的理论机制。调制理论，这是本文的主要贡献。