Abstract:

In this paper, a driving system of electric vehicle （EV） based on anti-direction dual-rotor motor （AD- DRM） is investigated, and the corresponding mathematical modeling and simulation are carried out. In the investigation, the influence of the two output shafts and their transmissions inertia difference on the driving performance is analyzed, and a model based on the dual-exponent model is established to calculate the longitudinal adhesion coefficient. Theoretical and simulated results indicate that （ 1 ） the driving system based on ADDRM is of the ability of swerve difference at a constant electromagnetic torque; （2） the transmission inertia difference of the two rotors has little effect on the acceleration of EV ; （3） at a small slippage ratio, the two wheels of EV have almost the same acceleration, speed and slippage ratio variation; and （4） if the transmissions inertia difference of the two rotors is restricted in a small range, the accelerations and speeds of the two wheels are almost the same even in slippage conditions.

Key words: electric vehicle, anti-direction dual-rotor motor, driving system, rotation inertia, slippage ratio