Abstract
This paper investigates the electromagnetic performance of a 45-slot/10-pole interior permanent magnet synchronous machine (IPMSM) for electric vehicle. To meet the complex requirements of electric vehicle, the comprehensive electromagnetic performance of a 45-slot/10-pole IPM machine is predicted by 2-D finite element analysis (FEA), and compared with a 12-slot/10-pole machine, an 18-slot/10-pole machine, a 30- slot/10-pole machine and a 60-slot/10-pole machine. The winding factor, the back EMF, torque characteristic and losses of the five machines are studied by comparing the FEA results. The results shows that the total harmonic distortion (THD) of back electromotive force (EMF) and torque ripple can be suppressed in the 45-slot/10-pole machine, compared with the other integer-slot per pole pair machines, 30-slot/10-pole and 60-slot/10-pole. Meanwhile, the average torque and losses can be improved, compared with two fractional-slot machines, 12-slot/10-pole machine and 18-slot/10-pole machine.
Published Version
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