Abstract
conductivity. There is a dependency between the resistance and the membrane humidity and internal temperature. The ohmic resistance is a function of the membrane conductivity (Ω. 2)−1, which is also a function of water content of the membrane (
Highlights
T HE Fuel Cells are electrochemical energy converters
The DC-DC Converter is an integral part of fuel cell power conditioning unit, this paper intends to present modeling of fuel cell as well as of DC/DC Converter [3]
The boost converter offers higher efficiency and less component counts compared to other DC/DC converters topologies like push pull, half bride and full bridge etc. which could possibly be used to interface fuel cell system to the load
Summary
T HE Fuel Cells are electrochemical energy converters. They can be seen as black-boxes turning chemical energy contained in a fuel directly into electrical energy while generating heat and water as byproducts [1]. The primary difference is that the battery contains the reactants that generate electricity whereas those reactants need to be supplied externally to the fuel cell i.e. a battery needs to be fearful away or recharged once those reactants are depleted while the fuel cell can be refueled by refilling the tank with hydrogen. In this respect they are comparable to internal combustion engines which generate mechanical power with heat and exhaust gases as byproducts [2]. The protons and electrons combine with oxygen produce water, this reaction is described by: O2 + 4H+ + 4e− → 2H2O (2)
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