Pure Electric Vehicle Performance Modeling And Simulation

Nowadays, many goverments swarm into developing electric vehicle,and the development of electric vehicle brings new task how to produce electric vehicle fast and effectively. The simulation of electric vehicle was developmented.All studies in this dissertation focus on elements of the Pure Electric Vehicle, such as motor,battery and transmission.The principle and dynamic property of the motor were analyzed, the mathematical model of the motor was established and the simulation was accomplished.The battery in PEV was analyzed, the mathematical model of the battery was established and the calculating for the important parameters of battery was discussed.The computational model for calculating each transmitting ratio was established and the shifting schedule was studied, the optimal-power shift strategy and optimal-economy shift strategy were founded and the simulation was accomplished. The principle of electrical regenerative braking was analyzed,the computational model of regenerative braking was established,several control strategies for regenerative braking were discussed and the simulation was accomplished.The mathematical model for calculating tractive performance such as maximum speed,the climbing capability,acceleration capability and dynamic index was established,and mathematical model for calculating economy such as energy lost and recovery, recycling rate, energy lost in 100 kilometres under constant speed and continue-distance was established. Bases on above theories,the proprietary software was exploited,use the software to simulate the performance of PEV under several driving-conditions, then compare the results from the proprietary software and ADVISOR based on the same parameters, the comparisons validate the software was reasonable.