Design of New-type Axial Flux Permanent Magnet in-Wheel Machine

The paper investigated the design of a new-type direct-drive axial flux permanent magnet (AFPM) synchronous in-wheel machine specially designed for electric vehicle applications. The machine configuration is simple and easy to manufacture. The machine has good performances such as phase EMF waveform close to sinusoidal waveform and low cogging torque. The electromagnetic design of 6.8 kW AFPM machine is performed using analytic method and verified by finite element method. The analytic computation and simulation result have a good agreement and verify the validation of the proposed method.