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Energies 2009, 2(1), 71-96; doi:10.3390/en2010071

Analysis of the Coupling Behavior of PEM Fuel Cells and DC-DC Converters

1,* , 1 and 1, 2
1 Max Planck Institute for Dynamics of Complex Technical Systems, Process Synthesis and Process Dynamics Group, Sandtorstraße 1, 39106 Magdeburg, Germany 2 Otto-von-Guericke-Universit¨at Magdeburg, Lehrstuhl f¨ur Automatisierungstechnik / Modellbildung, Universit¨atsplatz 2, 39106 Magdeburg, Germany
* Author to whom correspondence should be addressed.
Received: 8 January 2009 / Accepted: 19 February 2009 / Published: 4 March 2009
(This article belongs to the Special Issue Fuel Cells)
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The connection between PEM fuel cells and common DC-DC converters is examined. The analysis is model-based and done for boost, buck and buck-boost converters. In a first step, the effect of the converter ripples upon the PEM fuel cell is shown. They introduce oscillations in the fuel cell. Their appearance is explained, discussed and possibilities for their suppression are given. After that, the overall behaviors of the coupled fuel cell-converter systems are analyzed. It is shown, that neither stationary multiplicities nor oscillations can be introduced by the couplings and therefore separate control approaches for both the PEMFC and the DC-DC converters are applicable.
Keywords: PEM fuel cell; DC-DC converters; analysis; ripple; oscillations PEM fuel cell; DC-DC converters; analysis; ripple; oscillations
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Grötsch, M.; Mangold, M.; Kienle, A. Analysis of the Coupling Behavior of PEM Fuel Cells and DC-DC Converters. Energies 2009, 2, 71-96.

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