Effect of Number of Poles on IPMSM Performance for Electric Vehicle Drivetrain

Interior permanent magnet synchronous machine (IPMSM) has been widely used in different areas such as electric vehicles. The analysis and design process greatly affect the machine’s performance. Especially, the selection of number of poles greatly affects the machine performance such as machine volume and machine losses. This paper deals with analysis of the three different pole numbers and slot numbers of IPMSM. Three types of design structures, 6-pole, 8-pole, and 10-pole, are compared using FEM. The results of these models are compared, and the trade-offs in selecting pole numbers are discussed. Finally, the most proper number of poles is selected after comparing three different models.