Simulation and Analysis of Axial Flux Motor with Rotor-Stator-Rotor Geometry

This paper presents the design process, detailed analysis, and a study on the advantages of axial flux motor (AFM) for advanced transportation application such as electric vehicle where the main aim is to reduce the weight of its components so as to increase the overall vehicle’s performance. The geometry of rotor-stator-rotor is taken into consideration here. The model is designed with 10 pole, double layer winding and 3-phase star connected supply. The rotor magnet used is an Halbach array. A steady-state analysis is done to predict the motor performance with Torque vs Speed graph and 2D-Finite-element analysis explains saturation of motor and efficiency at different current levels with the help of Efficiency and Power Factor maps. It is observed that rms supply current determines the maximum toque range and subsequently the boundary of field weakening region at a constant DC voltage of 800 Volts which is a standard voltage level in new generation electric vehicles.