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Power Control Strategy for Fuel Cell Hybrid Electric Vehicles
Technical Paper
2003-01-1136
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Fuel cell is one of alternative power sources, which can replace the conventional internal combustion engine. But, it has some drawbacks such as low efficiency at high power output and inability of energy regeneration. So, hybridization of the fuel cell has been proposed to overcome these drawbacks. And the fuel cell hybrid system is preferred in a viewpoint of cost and performance.
HMC's fuel cell hybrid system consists of a fuel cell, a battery, and a bi-directional dc/dc converter. Bi-directional dc/dc converter plays a key role that controls power distribution between fuel cell and battery. Conceptually, the fuel cell is main power source and the battery is auxiliary power source. In this paper, the power control strategy for fuel cell hybrid system is proposed to satisfy two control targets. One is to get high system efficiency and the other is to maintain battery's SOC(state of charge) in high efficiency region of the battery. So, the control strategy can be also divided into two parts, which are system efficiency care part and SOC control part. The system efficiency can be improved by controlling power distribution between fuel cell and battery. And a bi-directional dc/dc converter controls the SOC of battery. Sometimes there exists contradictory situation that two control targets cannot be satisfied simultaneously. In that case, the SOC control has priority to the system efficiency. The proposed control strategy is evaluated by experiments.
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Authors
- Jin-Hwan Jung - Electric Powertrain Development Team, Advanced Technology Center, Hyundai Motor Company
- Young-Kook Lee - Electric Powertrain Development Team, Advanced Technology Center, Hyundai Motor Company
- Jung-Hong Joo - Electric Powertrain Development Team, Advanced Technology Center, Hyundai Motor Company
- Ho-Gi Kim - Electric Powertrain Development Team, Advanced Technology Center, Hyundai Motor Company
Topic
Citation
Jung, J., Lee, Y., Joo, J., and Kim, H., "Power Control Strategy for Fuel Cell Hybrid Electric Vehicles," SAE Technical Paper 2003-01-1136, 2003, https://doi.org/10.4271/2003-01-1136.Also In
Fuel Cell Power for Transportation from the SAE 2003 World Congress on CD-ROM
Number: SP-1741CD; Published: 2003-03-03
Number: SP-1741CD; Published: 2003-03-03
References
- Rajashekara K. “Propulsion system strategies for fuel cell vehicles” SAE 2000 World Congress Detroit, Michigan March 6-9 2000
- Ogburn M. Nelson D. J. Luttrell W. King B. Postle S. Fahrenkrog R. “Systems integration and performance issues in a fuel cell hybrid electric vehicle” SAE 2000 World Congress Detroit, Michigan March 6-9 2000