Abstract

Regenerating braking technology benefits energy economy of vehicle, being and the important way to improve the energy saving and emission reduction of electric vehicles. To guarantee braking safety and maximize regenerative braking energy, considering the constraints of motor and battery on energy recovery, a strategy of regenerative braking of twin motor 4WD electric vehicle is provided by braking force distribution via I-curve and ECE regulatory curve. A vehicle system simulation model combining the vehicle model and the braking force distribution control model is built. Through the analyses for the strategy braking performance under braking conditions, the results verify the feasibility of control strategy, enabling improving the range of electric vehicles and recovering regenerative braking energy effectively in the case of stability and safety.

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