ELECTROMAGNETIC ANALYSIS OF THE INTERIOR PERMANENT MAGNET MOTOR FOR THE HYBRID ELECTRIC VEHICLE

Abstract

This research paper deals with the electromagnetic analysis of the interior permanent magnet (IPM) motor for the hybrid electric vehicle (HEV). Like Toyota prius III traction motor, a V-typed single-layered IPM motor is investigated. A two-dimensional (2D) finite element analysis (FEA) methodology is discussed and adopted to compute the electromagnetic characteristics of the IPM motor, at no load and rated load with constant speed conditions. At no load, the cogging torque and back EMF of the IPM motor are computed, whereas at rated load and constant speed, the electromagnetic torque, magnet and iron core losses, and input electrical and output mechanical powers are computed using the 2D FEA. The cogging torque periodic cycle is determined using the analytical approach, and the current control angle is determined for the subsequent control strategies for the IMP motor. The electromagnetic output results are discussed in detail to understand their implications on the performance and efficiency of the IPM motor for the HEV traction application.