Fuel cell hybrid vehicles offer a high-efficiency and low-emission substitute for their internal combustion engine counterparts. The hybridization significantly improves the fuel economy of the vehicle; however, exploiting the hybridization requires a well-designed power management strategy that optimally shares the power demand between the power sources. This paper deals with the optimization of power management strategy of a fuel cell/battery hybrid vehicle, both off-line and in real-time. A new formulation of the optimization problem for the real-time strategy is presented. The new approach allows the optimization of the controller over a set of driving cycles at once, which improves the robustness of the designed strategy. The real-time optimization is applied to two forms of real-time controllers: a PI controller based on Pontryagin's Minimum Principle with three parameters and a fuzzy controller with ten parameters. The results show that the PI controller can outperform the fuzzy controller, even though it has fewer parameters. The real-time controllers are designed by simulation and then validated by experiment.
Power management optimization of fuel cell/battery hybrid vehicles with experimental validation
Journal of Power Sources ; 252 ; 333-343
2014
11 Seiten, 25 Quellen
Aufsatz (Zeitschrift)
Englisch
Optimierung , Fuzzy-Regelung , Validierung , Hybridisation , Energiemanagement , Brennstoffzelle , Hybridfahrzeug , Brennstoffzellenfahrzeug , Echtzeitoptimierung , PI-Regler , Fuzzy-Regler , Optimierungsproblem , Fahrzyklus , Motor mit innerer Verbrennung , Leistungsbedarf , Echtzeitsteuerung und -regelung , Regler
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