This paper presents an improved magnetic equivalent circuit (MEC) method for modeling linear permanent-magnet synchronous motors (LPMSMs) with adjustable accuracy. The performance of machine with different dimensions, poles and slot numbers can be studied by the proposed flexible MEC, where the core nonlinearity is fitted on the material B–H curve. End effect is modeled by considering two virtual zones with desired accuracy at both entrance and exit ends of the primary. A new structure based on magnets segmentation is also proposed to investigate its effect on the motor performance. Finally, the results of the proposed method are compared with 3D-FEM to show the effectiveness of the presented model. The results show improvement in processing time with good accuracy compared to previous classic methods. In general, introducing a new model based on an improved MEC approach for modeling LPMSMs considering slot effect, iron core saturation and segmented PMs with flexible accuracy by adjusting the number of flux tubes is the paper novelty which is studied in this work.

本文提出了一种改进的磁等效电路 (MEC) 方法，用于模拟具有可调精度的线性永磁同步电机 (LPMSM)。可以通过所提出的柔性 MEC 研究具有不同尺寸、极数和槽数的机器的性能，其中核心非线性拟合在材料 B-H 曲线上。通过在初级入口和出口端考虑两个具有所需精度的虚拟区域来模拟端部效应。还提出了一种基于磁铁分割的新结构，以研究其对电机性能的影响。最后，将所提出方法的结果与 3D-FEM 进行比较，以显示所提出模型的有效性。结果表明，与以前的经典方法相比，处理时间得到了改善，并具有良好的准确性。一般来说，