This paper studies the effect of permanent magnet shape on the performance and efficiency of coreless axial flux permanent magnet synchronous generator (AFPMSG) for low-speed applications. The objective of this study was to come up with an optimal magnet shape among the studied cases that will lead to the highest value of induced EMF, eventually leading to the better output power of the machine. According to the obtained results, a coreless AFPMSG with a triangular magnet shape has higher induced EMF as compared to trapezoidal or skewed-shaped magnets. Also, a topology with rounded-triangular magnets is analyzed to investigate the effect of the rounded edges on the performance of the generator. 3D-finite element analysis (FEA) is used to analyze and compare the back-EMF and output power of all the investigated coreless AFPMSG topologies. This analysis is carried out using JMAG-Designer 19. 1.

本文研究了永磁体形状对低速应用的无芯轴向磁通永磁同步发电机 (AFPMSG) 的性能和效率的影响。本研究的目的是在所研究的案例中找出最佳磁体形状，这将导致感应电动势的最高值，最终导致机器的更好输出功率。根据获得的结果，与梯形或斜形磁体相比，具有三角形磁体形状的无芯 AFPMSG 具有更高的感应电动势。此外，还分析了圆形三角形磁铁的拓扑结构，以研究圆形边缘对发电机性能的影响。3D 有限元分析 (FEA) 用于分析和比较所有研究的无芯 AFPMSG 拓扑的反电动势和输出功率。