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Modélisation et caractérisation de Piles A Combustible et Electrolyseurs PEM

Abstract : This thesis is part of the production and use of hydrogen energy vector whose potential is very promising in a renewable energy landscape. More precisely, this study focuses on electrolysers and fuel cell using PEM technology (proton exchange membrane) operating at low temperature. Almost all the studies presented here were executed in close partnership with HELION Hydrogen Power; particularly in the context of the ANR project "AIRELLES" (2008-2011). Firstly are presented bases for models (steady-state, small signal dynamics, large signal dynamics) that are generic and applicable to a fuel cell and an electrolyzer. The characterization methodologies and parameterization techniques used are then presented. The interest to interbreed all these approaches to exactly characterize the components is illustrated. Using this common view of the two components, the document is divided into three parts: - The first part focuses on validation and exploitation of the proposed models through various studies on H 2 /air fuel cells: 1) The search for signatures of a flooding or a drying stack fuelled in H 2 /air. These signatures are compared with stack fuelled in H 2 /0 2 . 2) The analysis of the impacts of high frequency current harmonics (representative of a DC-DC boost converter) on a cell heart. This work is part of collaboration with the laboratory FEMTO-ST/FCLAB (CNRS project CO-CONPAC). - A second part focuses on the validation and parameterization of models proposed for the electrolyzer. Two new techniques have been proposed and tested: the first one is a multispectral impedance approach and the second one a low frequencies multi sweep approach. - - The third part describes the test facilities that have been designed and implemented in this thesis leading to a significant test platform dedicated to hydrogen on INPT site (Toulouse Labège).
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Olivier Rallières. Modélisation et caractérisation de Piles A Combustible et Electrolyseurs PEM. Energie électrique. Institut National Polytechnique de Toulouse - INPT, 2011. Français. ⟨tel-00819317⟩

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