A permanent magnet homopolar inductor machine with a mechanical flux modulator (PMHIM-MFM) for flywheel energy storage system (FESS) is investigated. The no-load air-gap flux generated by the PM can be suppressed, and the no-load core loss can be reduced by using the MFM when the PMHIM-MFM works at an idling state, which helps to improve the energy transformation ratio of the FESS. First, the operation principle and flux modulation mechanism of the PMHIM-MFM are presented. Second, the influences of MFM shapes and structure parameters, moving distances, and the eccentricity on the electromagnetic characteristics of PMHIM-MFM are investigated based on the 3-D finite element method (FEM). Third, the simplified equivalent analysis model of the PMHIM-MFM is proposed to analyze the flux weakening ability and magnetic pull of the MFM. Fourth, the characteristics of the armature reaction of the PMHIM-MFM are investigated, and the load performance is studied. Finally, a prototype of the PMHIM-MFM is tested, and some theoretical analyses and FE calculations are validated.

中文翻译：

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机械磁通调制永磁单极电感电机的仿真与实验分析


研究了用于飞轮储能系统（FESS）的带有机械磁通调制器（PMHIM-MFM）的永磁单极感应电机。当PMHIM-MFM工作在空载状态时，可以抑制PM产生的空载气隙磁通，降低空载磁芯损耗，有利于提高电机的能量转换比。 FESS。首先，介绍了PMHIM-MFM的工作原理和通量调制机制。其次，基于三维有限元法（FEM）研究了MFM形状和结构参数、移动距离和偏心率对PMHIM-MFM电磁特性的影响。第三，提出了PMHIM-MFM的简化等效分析模型来分析MFM的弱磁能力和磁力。第四，研究了PMHIM-MFM的电枢反应特性，并研究了负载性能。最后，对 PMHIM-MFM 原型进行了测试，并验证了一些理论分析和有限元计算。