A new large power and high torque outer rotor inwheel motor was presented, which was used for electric airport shuttle bus, airport bus, bus, etc. By optimizing the pole arc coefficient and pole skew of the permanent magnet, the phase back electromotive force (EMF) was trapezoidal wave that contained mainly 3rd harmonics, line back EMF was sinusoidal wave, and the output torque of the motor was improved. The effects of permanent magnet with different coercivity on the electromotive force were compared and analyzed. Considering the torque output and adjustment range of motor speed, reasonable coercivity was applied. Besides, the fieldcircuit coupling simulation platform was built based on SimplorerMaxwell software, and drive characteristics of motor controlled by field oriented vector control and square wave control were compared. Although both control strategies were applicable for this type of motor, the field oriented vector control showed better performance with less torque ripple.