Étude de systèmes pile à combustible hybridés embarqués pour l'aéronautique

Abstract : The domain of air transport is working at reducing its emissions of greenhouse gases. PEMFC are seriously considered as electrical source for future aircraft. The present study focusses on the feasibility of propulsion of a light aircraft powered by hybridized PEMFC systems. The hybrid PEMFC / Li-Ion batteries system studied here produces 40 kW (20 kW PEMFC + 20 kW Li-Ion) and should be able to power a two-seat light aircraft. The first part of the study is dedicated to PEMFC airworthiness, meaning their capacity to work properly in aeronautical conditions. The second part is dedicated to the hybrid system electrical architecture, its dimensioning and its response to various flight profiles. Aerobic PEMFC performance loss due to drop in ambient pressure is quantified thanks to experiments at various altitude. Thanks to these measurements and to a numerical model, aerobic and anaerobic PEMFC are compared according to various flight profiles. A mass and volume balance of each technology is drawn up. In addition, inclination tests of PEMFC systems are performed. Direct hybridization of PEMFC and Li-Ion batteries is studied numerically and experimentally. A Matlab Simulink model of PEMFC and battery is developed in order to forecast the hybrid system's response and to size it. Finally, an experimental bench is settled up and tests are led, proving the interest of such an innovative architecture.
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Théophile Hordé. Étude de systèmes pile à combustible hybridés embarqués pour l'aéronautique. Autre. Ecole Nationale Supérieure des Mines de Paris, 2012. Français. ⟨NNT : 2012ENMP0107⟩. ⟨tel-01236621⟩

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