Design of Disk Motor with Inclined Wave Winding without Stator Core for Shaftless Propeller

The disk motor has compact structure and high power density, which is suitable for assembly in shaftless wheel propeller. In this paper, a three-rotor double-stator disk motor is designed. Firstly, the structure and advantages of the motor are introduced. The stator coreless design is adopted to reduce core loss and torque fluctuation. Secondly, in order to increase the inner diameter of the motor, the inclined wave winding is designed as the stator winding. Finally, three-dimensional finite element analysis (FEA) is used to model and simulate the designed motor to verify the effectiveness of the motor design.