Research On Regenerative Braking Control Technology Of Pure Electric Bus

Electric vehicle has zero emission, no pollution to the environment, energy conservation and environmental protection. In the face of increasingly worsening environment and increasingly exhausted resources, the development of the electric vehicle is the best way to solve the problems of environment and resource. So the development of the electric vehicle catches the attention of the government and automobile enterprises. The biggest characteristic of electric vehicle is to be able to recover the regenerative braking energy and the purpose of the recovery of braking energy is to improve the energy utilization rate and increase mileage of the electric vehicle.To get more regenerative braking energy, more electric braking power must be used. So this paper starts from the perspective of optimizing braking force distribution. First, this paper analysis the force on front and rear wheel, lists the equation of motion when the car is braking, establishes the dynamic model of braking process, obtains the ideal braking force distribution curve, and analyzes the factors influencing the braking energy recovery.On the basis of analyzing and comparing series control strategy, parallel control strategy and fuzzy control strategy and in the consideration of the ideal braking force distribution curve, the vehicle braking force analysis and the influencing f actors of brake energy recovery, this paper puts forward the optimization braking force distribution control strategy applicable to the electric car. Under the premise of meeting the braking stability, the strategy can use electrical braking as much as possible, reduce the use of mechanical friction and get the greatest degree of energy recovery.Based on the theory of analysis, the paper also plants the optimization braking force distribution strategy into the experimental vehicle controller MCU and choose the actual road conditions on road test. By analysis of the experimental data, the feasibility and practicability of the strategy has been validated.