A new permanent-magnet vernier direct-drive in-wheel motor for electric vehicles

This paper proposes a new permanent-magnet vernier (PMV) in-wheel motor to meet the new demands arising from in-wheel electric vehicles. It can offer the advantages of light weight, compact size and low-speed high-torque operation. The mechanical gear can be removed by introducing flux-modulation poles. By using the time-stepping finite element method, the performance of the proposed machine can be accurately analyzed.