Control Strategy Of Trolley Car Braking Energy Recovery Based On ECER13 And I Line

In the environment of protecting the environment and saving energy,electric vehicle has become the focus of attention because of its zero emission.But its driving range is short,and regenerative braking technology can effectively save fuel to improve the energy recovery rate of pure electric vehicle,increase the driving range.Regenerative braking,one of the most important and widely used technologies in electric vehicles,saves fuel by converting the kinetic energy of a moving vehicle into electricity during deceleration.To achieve this goal,the drive motor can be turned into a generator,which converts kinetic energy into electricity and feeds the generated electricity back into the battery pack,which will be an important energy source for subsequent driving.Regeneration efficiency by brake comfort,however,the braking safety and the limitation of the brake pedal feel,and many other factors,so this paper is based on pure electric vehicle braking energy recovery technology,in order to improve the energy recovery efficiency as the goal of the optimization,the control strategy of the strategy is mainly based on ECE R13 regulation curve and the regenerative braking control strategy of I line,This mode distributes braking force between the front and rear axles to ensure safety and stability of the vehicle.Secondly,the braking force is distributed between hydraulic braking and motor braking by fuzzy control.A fuzzy controller is designed which takes SOC,braking intensity and speed as input and the proportion of motor involved in braking as output.According to different braking intensity,it is divided into four cases for research.The corresponding Simulink model is established and embedded into AVL＿CRUISE software for co-simulation.It is an indisputable fact that the fuel consumption data tested by NEDC in China differs greatly from the actual data.Therefore,NEDC and CLTC＿P conditions are selected in this paper,and then the co-simulation is carried out according to the software.Through the analysis of Chinese passenger vehicles,CLTC-P obtained a more reflective ev energy consumption condition.According to the results,the designed control scheme can meet the requirements of braking stability,its power distribution curve also fits the corresponding braking characteristics,and can efficiently recover braking energy,strengthen battery state of charge(SOC),and improve the driving capacity of electric vehicles.