| In the background of the energy crisis and environmental degradation, most of the auto giants have started to develop the environmental-friendly and energy-saving traffic measure. The governments are taking variety methods to promote the use of new energy vehicles. Currently, in the widespread use of the new energy vehicles, the hybrid vehicles is the one which own the most practical bussiness value. In order to realize the hybrid system use electricity as much as possible, and use less fossil fuel, a new hybrid cars which between the traditional HEV and EV——-the Plug-in HEV, which became the hot topic of today’s research when it been proposed. Plug-in HEV can use the home power system for charging, and owns a longer pure electric driving mileage. When the driving distance is more than the maximum pure electric driving range, it will start the hybrid model for a long distance travel. Visibility, this hybrid system has a unique advantages.YTK6110D was studied as the original model in this thesis, and converted it into a Plug-in hybrid, then by the control strategy to achieve the energy optimal control. The main content of this content of this article owns the following aspects:(1) First, made a detailed analysis of the hybrid system drive structure, and taking into account about the operating conditions in Zibo. The parallel axis drive system been chosen based on it. Then all the power components of the drive system was selected respectively. Under the guidance of the expected dynamic performance indicators, completed all the power components’parameters matching.(2) Through the analysis the operating mode of the hybrid bus, to formulate the control rules of the Plug-in hybrid bus. Using Matlab/Simulink simulation platform to establish the rule-based electricity-assisted control strategy model. The various working conditions of the Plug-in HEV could achieve the seamless conversion by the Finite State Machine theory.(3) Using the Cruise software platform to build the Plug-in HEV modle. Through the API interface between the Cruise and Matlab, to connect the vehicle model in Cruise and the control strategy model in Simulink, realizing this two softwares’co-simulation. (4) Do the simulation about the original bus by Cruise software, according to the simulation value and the experimental value’s error to verify the reliability of this simulation software; do the simulation about the designed Plug-in HEV in this article, the simulation results shows that the designed Plug-in HEV’s dynamic performance can achieve the expected indicators, fuel consumption is reduced significantly, and realized the energy optimization. |
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