Dynamic Performance Simulation And Test Result Analysis Of Plug-in Parallel Hybrid Passenger Car

This paper was based on design and development of HFJ7161 plug-in hybrid electric passenger car, a program of national 863 which assumed by Tianjing Qingyuan Electric Vehicle CO., LTD, and gave the simulation on the dynamic performance of the developed vehicles.By comparing to disadvantages and advantages on many different kinds of new energy vehicles firstly, it could be concluded that this plug-in hybrid electric vehicle not only could solve the problem of the excessive fuel consumption of the traditional hybrid vehicle, but also could solve the problem of the short range of the pure electric vehicle, as a result, this scheme was regarded as the best one in transition to the final clean energy vehicle.And then, by further researching on the key components of the dynamic system and mathematical calculation of key parameters on important components according to the 863 plan's requirements, a matching scheme on the dynamic system was proposed based on the current efforts. Furthermore, methods of simulation on the main parts of dynamic system were proposed respectively, and a simulation model, based on Matlab/Simulink, which can run on simulation platform of ADVISOR2002 was modeled. In the process of simulation, some problems on parameter input of engine, motor, battery and some settings were given great attention to and solved, thus the simulation accuracy was improved. In order to simulate vehicle's virtual performances more accurate, the vehicle's working condition was divided into start, drive, acceleration, deceleration and brake, all electric drive and so on, then a complete control strategy was proposed based on this regard.From the simulation result, it could be seen that vehicle's dynamic performance and fuel economy can be conformed to preset objective, and engine and motor were in good condition. It can be said that engine and motor were working in the optimal efficiency zone when they met the demand of performance on dynamic and fuel economy. Through the control strategy, some goals such as proper power distribution, start and stop of engine and motor, brake energy feedback and so on could be fully realized and, SOC could be maintained in the optimal zone all the time. Beyond that, the selection of the battery's capacity could meet the demand of range. The work in this paper was systematic. By comparing simulation results with real vehicle test, the simulation method in this paper was proved to be pragmatic and feasible. Models built currently have provided the necessary reference for Tianjing Qingyuan Electric Vehicle CO., LTD as well as eloquent basis for the future optimal design.