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Fuel cell systems present an effective means to enhance the degree of flexibility as well as the security of supply with energy in a system based on renewable energy sources. A fuel cell converts the chemical energy contained in elemental hydrogen into electric energy and thermal energy.<\/p>\n
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The Achilles\u2019 heel of today\u2019s fuel cells, and for that matter electrolyzers, particularly when it comes to sector coupling, is that reaction kinetics cannot be influenced due to the impossibility to manipulate the membrane. As a result, fuel cells display only a very limited degree of dynamic response to rapid changes in power demand. Moreover, especially in mobile applications higher power densities are essential. For these reasons, the research group for Electrical Power Systems at the Helmut Schmidt University embarks upon new approaches for the internal control of fuel cell systems. The main focus is directed towards a controlled manipulation via electric fields of the transport processes within the membrane. This capacity for an internal control is expected to optimize dynamics of the system and thus its response to rapid changes in power demand.<\/p>\n
The goals of this project are modification and improvement of both stationary and dynamic operating behaviour of PEM fuel cells. This is aimed at by the development of an electrically controllable membrane unit for fuel cells. Detailed goals comprise:<\/p>\n
In a first step, novel membrane units with an embedded control grid architecture, a so-called Electric Field Modifier (EFM), will be simulated and analyzed using the software COMSOL Multiphysics\u00ae as well as physically manufactured and tested. For characterization purposes, the research group can take advantage of its own fuel cell laboratory with potent test stations.<\/p>\n
Results from both theoretical simulation and physical characterization of prototypes will serve as mutual basis for the optimization of either of the two. Subsequently, the optimized prototypes will be subjected to enhanced tests for their dynamics and life time. At the end of the project, a fuel cell stack is envisaged that is built up from the novel electrically controllable membrane units.<\/p>\n
Friedrich, J.<\/em> Schumann, M.; Grumm, F.; Friedrich, J.; Schulz, D.<\/em> Schumann, M.; Grumm, F.; Friedrich, J.; Schulz, D.<\/em> Friedrich, J.; Schumann, M.; Schulz, D.<\/em>
\nEstimation of the Influence of Novel Control Lattices within Fuel Cell Membranes using a 2D Steady-State Model
\nVortrag auf dem Electrochemistry Workshop an der Helmut-Schmidt-Universit\u00e4t \/ Universit\u00e4t der Bundeswehr Hamburg,
\n12. – 14. November 2018, Hamburg, Germany<\/p>\n
\nTransient PEM Fuel Cell Control by an Electric Field Modifier<\/a>
\n2nd European Conference on Electrical Engineering and Computer Science (EECS 2018), Bern, Switzerland, 20-22 December 2018<\/p>\n
\nElectric Field Modifier Design and Implementation for Transient PEM Fuel Cell Control<\/a>
\nWSEAS TRANSACTIONS on CIRCUITS and SYSTEMS, vol. 18, pp. 55-62, 2019, ISSN (Online): 2224-266X<\/p>\n
\nEffects, Position and Density of Novel Control Lattices for PEM Fuel Cells
\n7th Eur. Conf. Ren. Energy Sys. 10-12 June 2019, Madrid, Spain<\/p>\n
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