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A DC/DC step-up converter stage is designed for interfacing a 5kW PEM fuel cell, with a focus on increased efficiency.

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Abstract

Abstract In domestic applications the low DC output voltage of a hydrogen fuel cell used as the main power supply or a backup power source has to be matched to the level and frequency of the AC voltage of utility grid. The interfacing power converter system usually consists of a DC/DC converter and an inverter. In this work, a DC/DC step-up converter stage is designed for interfacing a 5kW proton exchange membrane (PEM) fuel cell. The losses of DC/DC conversion are estimated and, basing on the relevant analysis, the most appropriate configuration of converter modules is selected for a DC/DC converter stage of increased efficiency. The authors present the results of experimental analysis and simulation for the selected configuration of four double inductor step-up push-pull converter modules

Key findings

  • The losses of DC/DC conversion are estimated and a configuration of four double inductor step-up push-pull converter modules is selected for increased efficiency.
  • Experimental analysis and simulation results are presented for the selected configuration.
  • The converter stage is designed for interfacing a 5kW PEM fuel cell in domestic applications.

Keywords

Flyback converterInterfacingForward converterBoost converterElectrical engineeringProton exchange membrane fuel cell

Identifiers

DOI
10.2478/lpts-2013-0022
Journal
Latvian Journal of Physics and Technical Sciences
Year
2013