Research Of The Power System Of The Hybrid Electric Bus

Electric Vehicle (EV) is now undergoing a development apex under the pressure of energy resource and environment preservation issues.Before battery and other energy devices can not take place internal-combustion engine completely, hybrid power system becomes the best choice. It can improve the economics and emission of vehicle. There are lots of reasons that hybrid power system can not industrialize at present.and the main reason is the contradiction between the high cost and economics enhanced.However ,it is declared the pruis can enhance 45 percent in economics.So it is necessary to research and manufacture Parallel Series Hybrid Electric Vehicle.It is attented that the shining points of HEV are its complex configuration , power system combination and control strategy.The power system of PSHEV based on double clutch has been talked about . The power system of PSHEV is simulated and matched based on advisor which is empoldered on matlab/simulink modeling environment.The characteristics of three Hybrid power are analysed and compared .State-of -art and development current of hybrid vehicle for China are analysed in the following article. The ingredients that prevent industrialization are also analysed.There are two schemes about configuration which are all using gear clutch , and coupling equipment is very important , involving the disposal of power system and transmission ratio.About matching of Power System, by studying the rules of vehicle driving cycle including speed, demand of power, and demand of energy etc. Matching and optimization of power system are done in advisor software so that every part is all running efficiency. ADVISOR is redeveloped and the model of coupling equipment is empoldered.About control strategy, different control strategy;different result of simulation. Control strategy is analysed by study those are described in some paper.and a suitable control strategy is found.The novel designs shows improving the economics can be improved to a great extent by developing this kind of PSHEV , and can prolong the use of fuel . Meawhile this paper provides certain applicational value of HEV development.