Compact PEM fuel cell system was developed for portable power generators. The power generator features a PEM fuel cell using a chemical hydride as a hydrogen source. The hydrogen generator extracts hydrogen using a catalytic hydrolysis from a sodium borohydride alkaline solution. A novel concept using an all-in-one reactor was proposed in which a catalyst, hydrogen temporary chamber and byproduct separator was included. In addition, the reactor as well as a pump, cooling fans, valves and controller was integrated in a single module. A 200 W PEM fuel cell stack was connected with the hydrogen generator and was evaluated at the various load conditions. Considering the fast response to a sudden power load, a hybrid power management of the fuel cell and battery was contrived. The fuel cell system had a high gravimetric energy density of 425 W-hr/kg. The capability of the developed fuel cell system was validated by applying to a small unmanned aircraft. The fuel cell-powered flight test was conducted, providing three times higher flight endurance compared to the existing batteries.
Compact PEM Fuel Cell System Using Chemical Hydride Hydrogen Source for Portable Power Generators
2014
4 Seiten, 4 Quellen
Conference paper
English
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