Power Loss Evaluation of a Surface Mounted Permanent Magnet Synchronous Machine During Two Hybrid Electric Vehicle Driving Cycles

Abstract

The paper presents a surface mounted permanent magnet synchronous machine (SMPMSM) with distributed windings. The main focus of the paper is to provide a new calculation method of electric machine losses, including copper losses and iron losses at load. This method based on the separation of injected current in d-q axes and the developed iron loss models expressing the dependence between the flux density variations and these currents. This calculation is applied not only for an operating point of the machine but for thousands points represented by a driving cycle of a hybrid electric vehicle (HEV). The calculations are taken into account the flux-weakening and the non-linear magnetic material.