Coordinated Converter-Charger for Hybrid Fuel Cell-Battery Power Sources

Abstract:

Both the fuel cell and battery have timely dynamic response to the step-profile load input. The current overshoot followed by a voltage undershoot behavior happen the step-up load, particularly. These phenomena are closely related to mass transfer mechanisms such as the water/gas transport by the redistribution of membrane water content in the fuel cell and the charge double-layer effect in the battery. When the load demand is beyond the rated power of the fuel cell system, the battery immediately powers to the load with a transient discharging current especially in the step-profile load power. This study presents a new control strategy for hybrid fuel cell-battery power sources with transient and overshoot considered. The results show that the proposed hybrid fuel cell-battery power source not only acting as a power stabilizer but also dynamically satisfying the step-profile load demand.

• Periodical: Applied Mechanics and Materials (Volumes 284-287)
• Pages: 2490-2493
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.284-287.2490
• Online since: January 2013
• Authors: Jenn Jong Shieh, Chung Hsing Chao
• Keywords: Charger, Fuel Cell (FC), Hybrid, Power Source

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