| Electric vehicle research can effectively improve the environmental problems and ease the energy crisis.The dynamic system of the automobile affects the economic,dynamic and reasonable matching of the power system,which will effectively improve the vehicle power and driving range.Driving mileage is the technical bottleneck hindering the development of electric vehicles.In order to improve the driving range of pure electric vehicles,this paper has carried on the thorough research to the regenerative brake.With the powerful function of ADVISOR software,this paper mainly carried out the following research work:(1)According to the prototype vehicle Chery tiger 7 vehicle parameters,in accordance with the relevant knowledge of the car theory of the vehicle motor,power battery,transmission ratio to accurately match the calculation and selection(2)According to the matching calculation result,the motor model,the power battery model and the transmission system simulation model based on MATLAB / SIMULINK are established.The results of the matching calculation are simulated and the simulation results are analyzed and compared.The simulation results show that the matching meets the design requirements.(3)In this paper,we design a regenerative braking control strategy based on ECE brake regulations,and then establish SIMULINK model.The simulation results are compared with the ADVISOR control strategy.The results show that the control strategy can effectively utilize the regenerative braking force of the motor and improve the recovery rate of the braking energy,thus optimizing the driving range.This study has theoretical significance and practical application value,which can provide some theoretical support and method guidance for the matching and regenerative braking of electric vehicle. |
PDF Full Text Request