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A current-fed step-up DC/DC converter is proposed for fuel cell applications, with active overvoltage clamping to match the low DC output voltage of hydrogen fuel cells to the utility grid AC voltage.

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Abstract

Current-fed Step-up DC/DC Converter for Fuel Cell Applications with Active Overvoltage Clamping In order to use hydrogen fuel cells in domestic applications either as main power supply or backup source, their low DC output voltage has to be matched to the level and frequency of the utility grid AC voltage. Such power converter systems usually consist of a DC-DC converter and a DC-AC inverter. A double inductor step-up push-pull converter is investigated in this paper, presenting simulation and experimental results for passive and active overvoltage clamping. The prototype of the investigated converter is elaborated for 1200 W power to match the rated power of the proton exchange membrane (PEM) fuel cell located in hydrogen fuel cell research laboratory.

Key findings

  • The double inductor step-up push-pull converter is investigated with simulation and experimental results for passive and active overvoltage clamping.
  • The prototype of the converter is designed for 1200 W power to match the rated power of the proton exchange membrane (PEM) fuel cell.
  • The converter is suitable for domestic applications as a main power supply or backup source.

Keywords

OvervoltageĆuk converterBoost converterElectrical engineeringForward converterClamping

Identifiers

DOI
10.2478/v10144-010-0032-0
Journal
Scientific Journal of Riga Technical University. Power and Electrical Engineering
Year
2009