Power for Aircraft Emergencies : A Hybrid Proton-Exchange Membrane H2/O2 Fuel Cell and Ultracapacitor System

Abstract : On the context of aviation, this article looks at replacing a ram air turbine(RAT) with a hybrid proton-exchange membrane (PEM) hydrogen/oxygen (H2/O2)fuel cell and ultracapacitor system, starting from a theoretical perspective. The structure we propose has two static power converters: one associated with fuel cells and the other with ultracapacitors. The energy management principle presented (frequency sharing) enables two types of control. First, the converter associated with the fuel cell manages the voltage of the dc bus, and then the converter associated with the ultracapacitors controls the high-frequency currents. Second, the voltage of the dc bus is oppositely controlled by the ultracapacitor converter. An experimental validation (at a reduced ratio scale of 1:10) allows for an analysis of the proposed principles. The experiment is conducted in two stages. In the initial validation,a fuel cell physical emulator is used as the main source, before introducing an actual fuel cell.
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Christophe Turpin, Benoît Morin, Eric Bru, Olivier Rallières, Xavier Roboam, et al.. Power for Aircraft Emergencies : A Hybrid Proton-Exchange Membrane H2/O2 Fuel Cell and Ultracapacitor System. IEEE Electrification Magazine, IEEE, 2017, 5 (4), pp.72-85. ⟨10.1109/MELE.2017.2758879⟩. ⟨hal-01946154⟩

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