A Novel Continuously Variable Magnetic Geared Dual Stator Hub-Motor for an E-Bike

This paper proposes a continuously variable magnetic geared dual stator (CVMG DS) motor for a direct-drive electric vehicle (EV) hub-motor applications. The proposed design has combined advantages of the wide torque-speed characteristics of a synchronous motor and high torque density of a magnetic gear using a variable gear ratio. Further, design considerations, variable gearing effect, and preliminary results of the proposed motor obtained from 2-D finite element (FE) analysis are presented.