This article investigates the torque characteristics of a switched flux hybrid magnet memory machine (SF-HMMM) by employing a coupled solution combining a quasi-linear hysteresis model (QLHM) of low coercive force (LCF) magnet and frozen-permeability method (FPM). This provides an in-depth understanding of the torque production of SF-HMMM. The QLHM is utilized to characterize the repetitive remagnetizing/demagnetizing behaviors of LCF permanent magnets (PMs), while the FPM is employed to separate and quantify the torque contributions due to two sets of PMs and armature windings. The machine topology and analysis methodology are described, respectively. The torque segregation results accounting for magnetization state variation are analyzed by the proposed coupled solution. The influence of the LCF PM property on the torque segregation result is investigated to facilitate the establishment of general design guidelines. Finally, the prototype is tested to experimentally validate the theoretical analysis.

中文翻译：

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耦合解法研究开关磁通混合磁记忆电机的转矩特性

本文通过采用结合低矫顽力 (LCF) 磁体的准线性磁滞模型 (QLHM) 和冷冻磁导率方法 (FPM) 的耦合解决方案，研究了开关磁通混合磁体记忆机 (SF-HMMM) 的扭矩特性. 这提供了对 SF-HMMM 扭矩产生的深入了解。QLHM 用于表征 LCF 永磁体 (PM) 的重复再磁/退磁行为，而 FPM 用于分离和量化由两组 PM 和电枢绕组引起的扭矩贡献。分别描述了机器拓扑和分析方法。考虑到磁化状态变化的转矩分离结果通过所提出的耦合解决方案进行分析。研究了 LCF PM 特性对扭矩分离结果的影响，以促进通用设计指南的建立。最后，测试原型以实验验证理论分析。