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최적화 기법을 이용한 상용 하이브리드 차량의 동력원 용량 설계
이대흥(Daeheung Lee),정종렬(Jongyeol Jeong),신창우(Changwoo Shin),박영일(Yeongil Park),차석원(Sukwon Cha) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
In heavy-duty HEV(hybrid electric vehicle) that has usually two power sources such as chemical and electrical energy, It is an important and difficult issue to quantify the component size and the fuel-economy, however, there is no standard method. In this paper, we present a component sizing method for heavy-duty hybrid system by considering efficiencies and performance of the entire system and reliability of power sources. The suggested method sets, first of all, 'feasible region' and chooses available 20 combinations of power sources. And then, we simulate a fuel economy by using Dynamic Programming to propose the optimal component size according to the driving cycles.
이대흥(Daeheung Lee),정종렬(Jongyeol Jeong),신창우(Changwoo Shin),박영일(Yeongil Park),임원식(Wonsik Lim),차석원(Sukwon Cha) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
With the additional power sources of electric motors, hybrid electric vehicles have flexibilities in managing and splitting their power to get the higher performances. In this paper, the engine/motor power split ratio algorithm is designed to develop the supervisory control method for heavy-duty parallel HEVs. And we presented a method for producing PSR line through DP. With this algorithm, engine/motor power split line is expressed as 2-dimensional map and using the developed driving control method, driving simulation is performed to evaluate vehicle performance and fuel economy. According to the simulation results, heavy -duty hybrid vehicle is superior to conventional vehicle(BUS) in fuel economy.