It can be concluded from the results of the previously published studies that the dual-stator consequent-pole Vernier PM machine introduces several advantages including higher torque per PM volume density, lower cogging torque, improved efficiency and simpler and more robust structure in comparison with the other presented structures. However, the optimal design procedure of the machine is not established yet. The importance of this issue is because of different geometry than conventional radial flux machines, unbalanced magnetic forces and mechanical and thermal limitations. In this paper, design variables are selected based on sensitivity analyses using FE method. Then, the objective function is defined as maximizing torque, efficiency and power factor and minimizing cogging torque. Several design constrained are imposed on the geometry dimensions, current densities and magnetic flux densities in different regions and mechanical forces. Magnetic equivalent circuit model is implemented for predicting the machine performance by varying the design parameters in each iteration of population-based optimization algorithm. The results of an optimum designed 10 kW machine with 2 kNm torque for in-wheel electric vehicle application are verified using 3D FE method.

中文翻译：

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高转矩密度双定子接极游标永磁电机优化设计程序

从先前发表的研究结果可以得出结论，双定子继极游标永磁电机与传统永磁电机相比，具有更高的单位永磁体积密度转矩、更低的齿槽转矩、更高的效率和更简单、更坚固的结构等优点。其他呈现的结构。然而，机器的优化设计程序尚未建立。这个问题的重要性在于与传统径向通量机器不同的几何形状、不平衡的磁力以及机械和热限制。在本文中，设计变量的选择基于使用有限元方法的敏感性分析。然后，目标函数被定义为最大化转矩、效率和功率因数以及最小化齿槽转矩。对几何尺寸、不同区域的电流密度和磁通密度和机械力施加了若干设计约束。通过在基于种群的优化算法的每次迭代中改变设计参数，实现磁等效电路模型以预测机器性能。使用 3D FE 方法验证了用于轮内电动汽车应用的优化设计的 10 kW 机器和 2 kNm 扭矩的结果。