Proposal of Variable Magnet Vernier Motor for High Efficiency in Wide Speed Range

In this research, a novel motor that can switch between Permanent Magnet Vernier Motor (PMVM) and (Permanent Magnet Synchronous Motor) PMSM characteristics with a single motor by using variable magnets is proposed. The proposed motor can output high torque and achieve high efficiency in low speed and high load condition by taking advantage of the features of PMVM, can expand the speed range and the high efficiency range by switching PMVM and PMSM characteristics. In this paper, the performances of output characteristic and motor efficiency of the proposed are clarified by Finite Element Analysis (FEA).