In this article, a 2-D analytical model is presented for brushless double mechanical port flux-switching permanent magnet machines (BDMPFSPMMs). The BDMPFSPMM is an appropriate candidate to be employed as the electric motor in hybrid electric vehicles (HEVs) due to integrating two rotors and two stators into a compact structure. The radial and tangential components of the magnetic flux density are calculated due to permanent magnets and armature currents in each active region of the machine based on the subdomain method. The effects of the saliency on both the rotor and stator structures as well as their interactions are considered. The approach can be used for the magnetic field calculation in BDMPFSPMMs with any combination of rotor- and stator-pole numbers. Based on the computed magnetic flux density, electromagnetic torque, self and mutual inductances, flux linkage, induced voltage, local traction, and unbalanced magnetic force (UMF) are obtained. To validate the proposed model, the analytical results are compared with those obtained from the finite element method (FEM).

中文翻译：

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无刷双机械端口磁通切换永磁电机的解析模型

在本文中，提出了无刷双机械端口磁通开关永磁电机 (BDMPFSPMM) 的二维分析模型。由于将两个转子和两个定子集成到一个紧凑的结构中，BDMPFSPMM 是用作混合动力电动汽车 (HEV) 中电动机的合适候选者。磁通密度的径向和切向分量是基于子域方法计算的，这是由于机器每个活动区域中的永磁体和电枢电流。考虑了凸极对转子和定子结构的影响以及它们的相互作用。该方法可用于 BDMPFSPMM 中转子极数和定子极数的任意组合的磁场计算。根据计算出的磁通密度、电磁转矩，获得自感和互感、磁链、感应电压、局部牵引力和不平衡磁力 (UMF)。为了验证所提出的模型，将分析结果与从有限元方法 (FEM) 获得的结果进行比较。