Characteristic Analysis of a Stator Module Type Vernier Motor

Abstract

　In the purpose of environmental conservation and energy saving, demands for high torque and high energy density drive motors at low speed are increasing, and vernier motors utilizing the magnetic gear effect are attracting attention. This paper presents a new stator module type vernier motor, which is applicable amorphous magnetic material effectively as a stator core material in order to reduce loss at high speed operation. For the purpose of clarifying the effect of application of amorphous wound core, the efficiencies of motors made of amorphous magnetic material, non-oriented electrical steel sheet and oriented electrical steel sheet are investigated by using finite element analysis. The results show that the proposed model is effective to improve efficiency of the vernier motor utilizing amorphous magnetic material.