Design process and topology comparison for a high performance PM-machine for sustainable traction drive technology

In this paper a design process for an electric machine is presented. With the focus on PM-machines with tooth-coil windings a new design methology is explained to identify the most interesting windings for a certain application. By adapting a special methodology multiple winding configurations are found. This process is applied to the design of a main drive for an electric vehicle. Different winding topologies are identified and compared. Especially a six-phase topology is introduced and analysed. The strengths and weaknesses of the investigated designs are explained and discussed.