摘要：为了提高功率密度和简化制造工艺，特别是定子绕线工艺，拼装式定子越来越多地应用于永磁同步电机中。然而，定子的拼装部位都存在一定的缝隙，该缝隙对电机性能如齿槽转矩、转矩脉动等产生一定的影响。本文以一台12极18槽表贴式永磁同步电机为例，采用解析法与有限元法相结合的方式研究拼装式定子在轭部的拼接形状对齿槽转矩的影响，找出相对较优的拼接形状，可为定子拼装式永磁同步电机的设计提供参考。

关键词：拼装式定子；拼接形状；永磁同步电机；解析法；有限元法
Abstract: In order to increase the power density and ease the manufacture process, particularly the stator winding process, segmented stators are extensively used for permanent magnet synchronous machines. However, there always exist additional air gaps between the stator segments, which may cause certain effects on the electromagnetic performance, such as the cogging torque and torque ripple. A 12-pole/18-slot surface-mounted permanent magnet synchronous machine was investigated in this paper. Both analytical and finite element methods were applied to study the influence of various connecting shapes on the cogging torque. The study can provide some references for the machine optimal design.

Key words: segmented stator; connecting shape; permanent magnet synchronous machine; analytical method; finite element method