Design and Performance Analysis of Permanent Magnet Synchronous Motor for Electric Vehicles Application

Abstract

In electrical vehicle applications, power density plays a significant role inimproving machine performance. The main objective of this paper is todesign and analyze the performance of in-wheel outer rotor permanentmagnet synchronous motor (PMSM) used in electric vehicles based on apreviously designed model. The key challenge is to achieve the bestmachine performance regarding the highest torque density and lowesttorque ripple. This work also aims at reducing the machine cost by usingpermanent magnet (PM) material, which has less energy density than thePM used in the previously designed model. An optimization procedure iscarried out to improve the generated torque, keeping the same aspects ofsize and volume of the selected machine. On the other hand, the otherspecifications of the machine are taken into consideration and aremaintained within the acceptable level. According to their major impacton the machine’s performance, the most important parameters of machinedesigning is selected during the optimization procedure. This proposedmachine is implemented and tested using the finite element softwarepackage “MagNet 7.4.1” with Visual Basic 16.0 programming languageand MATLAB 9.5 Simulink for post-processing