This paper used a lumped magnetic parametric approach-based analytical technique to design the 7.5 kW, three-phase line start permanent magnet (LSPM) motor. In order to enhance the efficiency and power factor (PF) of the prototype LSPM machine, an optimized slot shape of rotor permanent magnet (PM) was selected. The lumped magnetic circuit model is developed to present the magnetic characteristics, and analytical expressions are derived under the open circuit condition. The impact of the design variables on the analytical model air gap flux density distribution and magnetic flux leakage is studied for the LSPM. The design variables have a significant influence on the steady-state performance characteristics of the LSPM motor. Therefore, to verify the output results of the purposed model, the two-dimensional finite element analysis (FEA) was evaluated for the numerical solution of the analytical model.

中文翻译：

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基于磁等效参数的线启动永磁同步电机优化设计

本文使用基于集总磁参数方法的分析技术来设计 7.5 kW、三相线路启动永磁 (LSPM) 电机。为了提高原型 LSPM 机器的效率和功率因数 (PF)，选择了转子永磁 (PM) 的优化槽形状。建立了集总磁路模型来表示磁特性，并推导出开路条件下的解析表达式。研究了设计变量对 LSPM 分析模型气隙磁通密度分布和漏磁的影响。设计变量对 LSPM 电机的稳态性能特性有显着影响。因此，为了验证目的模型的输出结果，