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Oracle – DBA
A MODULAR FUEL CELL, MODULAR DC-DC CONVERTER CONCEPT FOR HIGH PERFORMANCE AND ENHANCED RELIABILITY
In this project a modular fuel cell powered by a modular dc-dc converter is proposed. A single phase inverter circuit is used to convert the input dc voltage from the fuel cell into desired ac voltage.
The voltage from the inverter is stepped up to desired voltage using a step-up transformer. A rectifier is used to convert the ac voltage from the transformer into dc voltage. This high dc voltage can be used in heavy loads. Fuel cell stacks produce a dc output with a 2:1 variation in output voltage from no-load to full-load.
Since fuel cells actively convert the supplied fuel to electricity, each cell requires proper distribution of fuel. Also stacking more cells in series decreases the reliability of the system. The proposed concept electrically divides the fuel cell stack into various sections, each powered by a dc-dc converter.
The proposed modular fuel cell powered by a modular dc-dc converter eliminates many of these disadvantages.