多边形永磁体磁场的数值分析

Numerical Analysis of Magnetic Field of Polygonal Permanent Magnet

永磁体的磁场分布是其工程应用的基础。本文以六边形永磁体和八边形永磁体为例,应用等效面电流法对多边形永磁体的磁场分布进行数值分析,经有限元仿真结果验证了数值表达式的正确性。分析了八边形永磁体较相应尺寸的矩形永磁体的磁场分布优势。

The magnetic field distribution of permanent magnet is the basis of its engineering application. In this paper, taking hexagon permanent magnet and octagon permanent magnet as examples, the equivalent surface current method is used to analyze the magnetic field distribution of polygon permanent magnet. The finite element simulation results verify the correctness of the numerical expression. The advantages of magnetic field distribution of octagonal permanent magnet com-pared with rectangular permanent magnet of corresponding size are analyzed.