Fuel economy of hybrid fuel-cell vehicles

被引:51
作者
Ahluwalia, RK [1 ]
Wang, X [1 ]
Rousseau, A [1 ]
机构
[1] Argonne Natl Lab, Argonne, IL 60439 USA
关键词
fuel economy; hydrogen fuel cell; hybrid vehicles;
D O I
10.1016/j.jpowsour.2005.01.052
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The potential improvement in fuel economy of a mid-size fuel-cell vehicle by combining it with an energy storage system has been assessed. An energy management strategy is developed and used to operate the direct hydrogen, pressurized fuel-cell system in a load-following mode and the energy storage system in a charge-sustaining mode. The strategy places highest priority on maintaining the energy storage system in a state where it can supply unanticipated boost power when the fuel-cell system alone cannot meet the power demand. It is found that downsizing a fuel-cell system decreases its efficiency on a drive cycle which is compensated by partial regenerative capture of braking energy. On a highway cycle with limited braking energy the increase in fuel economy with hybridization is small but on the stop-and-go urban cycle the fuel economy can improve by 27%. On the combined highway and urban drive cycles the fuel economy of the fuel-cell vehicle is estimated to increase by up to 15% by hybridizing it with an energy storage system. (c) 2005 Published by Elsevier B.V.
引用
收藏
页码:233 / 244
页数:12
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