This paper deals with analytical design, electromagnetic field analysis and parametric sensitivity analysis of an external rotor permanent magnet-assisted synchronous reluctance motor (PMASynRM). In this work, parametric sensitivity analysis of rotor geometry is performed to obtaining the minimum torque ripple and maximum electromagnetic torque with employing numerical analysis based on two-dimensional finite element method (FEM). In order to determine the optimum operation effect of geometry parameters like the q axis insulation ratio and the flux barrier arm angle for the proposed machine with three barriers is investigated and sensitivity of structure for rotor geometrical variation is presented. The studied machine in this work is a three phase, six pole, external rotor PMASynRM, which is designed by analytical approach and analyzed to obtain the maximum torque and minimum torque ripple based on a parametric sensitivity analysis approach. The obtained results from the FEM-based sensitive analysis and electromagnetic field analysis confirm the analytical design procedure for the proposed PMASynRM.

中文翻译：

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外转子永磁辅助同步磁阻电机的解析设计、电磁场分析及参数灵敏度分析

本文涉及外转子永磁辅助同步磁阻电机 (PMASynRM) 的分析设计、电磁场分析和参数灵敏度分析。在这项工作中，采用基于二维有限元方法 (FEM) 的数值分析，对转子几何形状进行参数敏感性分析，以获得最小转矩脉动和最大电磁转矩。为了确定所提出的具有三个屏障的电机的 q 轴绝缘比和磁通屏障臂角度等几何参数的最佳运行效果，并提出了结构对转子几何变化的敏感性。在这项工作中研究的机器是三相六极外转子 PMASynRM，采用解析法设计，并基于参数灵敏度分析法分析得到最大转矩和最小转矩脉动。从基于 FEM 的敏感分析和电磁场分析获得的结果证实了所提出的 PMASynRM 的分析设计程序。