In this paper, a hybrid permanent magnet (HPM) motor with unique external q-axis flux barriers design is investigated. The equivalent magnetic circuit models of dq-axes are established. Based on this, the relationship between the design parameters of dq-axes and saliency characteristics is analyzed. By rational design of dq-axes parameters, the contrary saliency characteristics of HPM motors can be achieved. Then, two HPM motors with contrary saliency characteristics, namely positive saliency HPM (PS-HPM) motor and inverse saliency HPM (IS-HPM) motor are obtained by a multi-objective optimization method. To explore the impact of saliency characteristics on motor performance, the inductance, torque, anti-demagnetization characteristics of PS-HPM and IS-HPM motor are compared and discussed in detail. The comparison results indicate that the HPM motor with IS characteristic is a more competitive candidate for over-load operation due to better anti-demagnetization and overload capability.

中文翻译：

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考虑不同凸极特性的混合永磁电机对比分析与多目标优化


本文研究了一种具有独特外部 q 轴磁通屏障设计的混合永磁 (HPM) 电机。建立了dq轴的等效磁路模型。在此基础上，分析了dq轴的设计参数与显着特性之间的关系。通过合理设计dq轴参数，可以实现HPM电机的相反凸极特性。然后，通过多目标优化方法获得了两种具有相反凸极特性的HPM电机，即正凸极HPM（PS-HPM）电机和逆凸极HPM（IS-HPM）电机。为了探究凸极特性对电机性能的影响，对PS-HPM和IS-HPM电机的电感、扭矩、抗退磁特性进行了详细的比较和讨论。比较结果表明，具有IS特性的HPM电机由于具有更好的抗退磁和过载能力，在过载运行方面更具竞争力。