A Novel Dual-Stator Hybrid Excited Permanent Magnet Vernier Machine With Halbach-Array PMs

Permanent magnet Vernier machine (PMVM) has received more and more attention, due to its high torque density at low rotation speed. This article proposes a dual-stator hybrid excited PMVM with Halbach-array permanent magnets (PMs). The proposed machine can achieve high torque density with consequent-pole Halbach-array PMs in the rotor and has good flux regulation capability and high power factor. First, the basic principle of the proposed machine is discussed, and the proposed machine can be regarded as a combination of two machines. Finite-element analysis simulations are performed to verify the performance. Moreover, the influence of different parameters on the torque density, flux regulation capability, and power factor is analyzed. The results demonstrate the effectiveness of the proposed machine.