The magnetic field modulated variable speed permanent magnet (PM) brushless motor (MFMVS-PMBM) is a new type of power shunting device for hybrid electric vehicles (HEVs), which is composed of a magnetic gear (MG) and a PM brushless motor (PMBM). Compared with the conventional double rotor motor, the MFMVS-PMBM shows a more complex electromechanical energy conversion relationship due to its special magnetic field modulation principle. In order to obtain better electromagnetic characteristics of the motor, the key parameters of MG and PMBM are optimized in this study. The effects of gear ratio, the number of blocks per pole of the Halbach array, and the angle of connecting bridge and magnetic isolation bridge on the torque of MG are analyzed. The electromagnetic characteristics of the motor, such as pole slot matching, PM thickness, and slot opening width of PMBM, are also analyzed. Finally, the prototype is made, and the experimental platform is built. The results show that MFMVS-PMBM has a good sinusoidal back electromotive force (EMF), high transmission efficiency, and power factor.

中文翻译：

---

混合动力汽车磁力齿轮永磁无刷电机性能分析


磁场调制变速永磁（PM）无刷电机（MFMVS-PMBM）是一种用于混合动力电动汽车（HEV）的新型功率分流装置，由磁力齿轮（MG）和永磁无刷电机（PMBM）组成。 PMBM）。与传统的双转子电机相比，MFMVS-PMBM由于其特殊的磁场调制原理，表现出更复杂的机电能量转换关系。为了获得电机更好的电磁特性，本研究对MG和PMBM的关键参数进行了优化。分析了齿轮比、Halbach阵列每极块数以及连接桥和磁隔离桥的角度对MG扭矩的影响。还分析了电机的电磁特性，如极槽匹配、PM厚度和PMBM槽开口宽度。最后制作了样机，搭建了实验平台。结果表明，MFMVS-PMBM具有良好的正弦反电动势（EMF）、较高的传输效率和功率因数。