Design and Analysis of a V-Shaped Permanent Magnet Vernier Motor for High Torque Density

This paper proposes a V-shaped permanent magnet vernier (V-PMV) motor for potential applications in direct drive system. By designing suitable pole slot ratio and adopting the PM topology dummy slots rotor, flux leakage can be avoided effectively. Meanwhile, high-order harmonics with large amplitude airgap magnetic field are fully utilized served as effective working harmonics, which aim at enhancing output torque reducing ripple. Moreover, to extensively explore performance advantages of V-PMV motor, multi-objective optimization study is carried out. And, electromagnetic performances motors analyzed compared detail. Finally, prototype machine built tested. Both theoretical analysis experimental results verify validity design approach.