Effect of stator segmentation and manufacturing degradation on the performance of IPM machines, using iCARe®electrical steels

Abstract

In order to increase the performance of permanent magnet electrical machines and/or reduce cost, improved manufacturing techniques are continuously being searched for by machine designers. Segmenting the stator core offers the possibility to simplify the winding process, to increase slot fill factor or to minimise wastage of electrical steel. This paper investigates some of the benefits that can be gained from stator segmentation, and highlights the effect of magnetic degradation due to the increased requirement on punching, through a series of finite element models.