This article proposes a new equivalent magnetic network (EMN) model for predicting the performances of interior permanent magnet (IPM) machines. The proposed EMN model incorporates the features of high accuracy and low time consumption in the reluctance network model and the magnetic equivalent circuit model, respectively, to achieve a tradeoff between the time consumption and calculation accuracy. A new air-gap model is also presented to make the dynamic analysis of the machine more efficient and easier. Moreover, the modeling approach of the rotor provides a standard for the modeling of IPM machines with permanent magnets (PMs) at different locations and of different shapes. In addition, the proposed EMN model takes into consideration the influence of flux leakage and iron saturation. Finally, the example machine is chosen, and the effectiveness of the EMN model is verified by comparison with the finite-element analysis and experimental tests.

中文翻译：

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新型IPM机等效磁网络模型的设计与分析

本文提出了一种新的等效磁网络 (EMN) 模型，用于预测内置永磁 (IPM) 机器的性能。所提出的EMN模型在磁阻网络模型和磁等效电路模型中分别结合了高精度和低时间消耗的特点，以实现时间消耗和计算精度之间的权衡。还提出了一种新的气隙模型，使机器的动态分析更加高效和容易。此外，转子的建模方法为在不同位置和不同形状的具有永磁体 (PM) 的 IPM 机器建模提供了标准。此外，所提出的 EMN 模型考虑了漏磁和铁饱和的影响。最后，选择示例机器，