Influence of Structural Differences on Motor Characteristics of Concentrated Winding IPMSMs Obtained by Automatic Design

Abstract

Interior permanent magnet synchronous motors (IPMSMs) are widely used because of their high efficiency and high power. However, since their design has a high degree of freedom, application-specific design of IPMSMs is difficult. In this study, we investigate the structural characteristics of the models obtained by an automatic design system using a genetic algorithm (GA), and examine the structural factors useful in the design of IPMSMs that reduce eddy current loss in the stator and have high efficiency at high speeds. In addition, we confirm that by using this design method for the general shape of concentrated winding IPMSM, the eddy current loss is reduced and the efficiency is improved in the high-speed range.