Novel Method of Deriving Torque and Speed Curve of the Permanent Magnet Synchronous Motor Using Initial State Finite Element Analysis
Novel Method of Deriving Torque and Speed Curve of the Permanent Magnet Synchronous Motor Using Initial State Finite Element Analysis
复制标题
利用初始状态有限元分析推导永磁同步电机扭矩和速度曲线的新方法
DOI：
10.1109/tmag.2022.3161475
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发表时间：
2022
影响因子：
2.1
通讯作者：
D. Lim
中科院分区：
文献类型：
--
作者：
Ji;D. Lim
本文提出了一种利用初始状态有限元分析（ISF）推导永磁同步电动机转矩和转速曲线（TS曲线）的新方法，以减少重复有限元分析（FEA）的高计算成本。ISF是一种只对初始转子位置进行有限元分析的方法。由于ISF忽略了其他周期部分，分析pmsm的计算时间可以大大减少。为了验证该方法的有效性，将ISF和传统的多步全周期有限元分析方法（FPF）应用于三种类型的永磁同步电动机，即内装式永磁同步电动机（IPMSM）、表面贴装式永磁同步电动机（SPMSM）和磁通开关机（FSM）。与考虑周期部件的传统方法相比，该方法可将SPMSM、IPMSM和FSM的TS曲线的计算时间分别缩短86.35%、89.39%和89.41%。每个测试模型在工作点的分析精度分别为94.24%、99.24%和99.86%，考虑到计算时间的减少，ISF保证了可接受的精度。因此，ISF可以有效地用于在电机的早期设计阶段推导永磁同步电机的TS曲线。
This article proposes the novel method of deriving torque and speed curve (TS curve) of the permanent magnet synchronous motor (PMSM) using the initial state finite element analysis (ISF) for the purpose of reducing the high calculation cost of the repetitive finite element analysis (FEA). The ISF is a method that conducts the FEA only for the initial rotor position. As the ISF neglects other periodic parts, the calculation time for analyzing the PMSMs can be drastically reduced. To verify the performance of the proposed method, the ISF and conventional method of full period FEA (FPF) with many steps were applied to three types of the PMSMs, interior PMSM (IPMSM), surface-mounted PMSM (SPMSM), and flux switching machine (FSM). The proposed method reduces the calculation time for deriving the TS curves of the SPMSM, IPMSM, and FSM as 86.35%, 89.39%, and 89.41%, respectively, compared with conventional methods of considering the periodic parts. The analysis accuracies at the operating points of each test models are 94.24%, 99.24%, and 99.86%, and the ISF ensures acceptable accuracy considering the reduced calculation time. Therefore, the ISF can be effectively used when deriving the TS curves of the PMSMs at the early design stage of the motors.