Virtual characterization of Interior Permanent Magnet (IPM) motor for EV traction applications

Abstract

Interior Permanent Magnet (IPM) motors are strengthening its candidature as traction motor in Electric Vehicles (EV) because of their advantages like high power density, extended field weakening and high efficiency. IPM motor being a complex control problem with inherent rotor saliency characteristic, extensive characterization on regenerative dynamometer is required for traction applications. This paper proposes a virtual characterization methodology for IPM motor using 2D Finite Element Analysis (FEA). The bench and vehicle test results confirmed the dynamic performance of IPM motor drive with acceptable accuracy.