Influence of Magnet Layer Numbers on Electromagnetic Performance of Interior Permanent Magnet Machines

With the goal of demonstrating the impact of magnet layer numbers on the electromagnetic performance of the interior permanent magnet (PM) synchronous machines (IPMSMs), a comparative design study of IPMSMs with various PM layer numbers is conducted in this paper. The electromagnetic performances of four multi-layered IPMSMs are compared based on global optimized topology parameters. Finite element analysis (FEA) is used to analyze and compare the back-electromotive force (back-EMF) and electromagnetic torque characteristics. The findings show that the suggested 4-layer IPMSM configuration can improve torque and has a lower peak-to-peak back-EMF than the other three machines.