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Hybridation d'une pile à combustible par des supercondensateurs : vers une solution passive et directe

Abstract : The feasibility of fuel cell (FC) applications has been demonstrated throughout the world. Research efforts are currently focused on improving the lifetime of the FC and reducing their cost. Until today, a FC does not tolerate rapid variations of load that cause in most cases lifetime reducing. To reduce this defect, hybridization with electrochemical storage component (typically ultracapacitors) is generally suggested via one or two static converters, requiring the implementation of an energy management. Aeronautic applications constitute the framework of these studies. They are the prolongation of studies initiated within the European project CELINA piloted by AIRBUS. The CELINA project (2005-2008) dealt with the replacement of the Ram Air Turbine (RAT) which is currently used for the last emergency electrical network in the case of total losses of engines or electrical generation. This emergency network has to supply the essential loads: the piloting auxiliaries (calculators...) consume a quasi-constant power, and the flight actuators (EHA, EMA) which are the main loads whose consumption is very intermittent. This study resulted in a classification of three architectures for which experimental validation in the framework of the French ISS project started since 2010 will be exposed. The direct hybridization between a FC and ultracapacitors has the advantages of not involving static converter and provide a natural energy management. The statement of facts is that all embedded applications using FC are hybridized, architecture and strategies development is performed for each case (development of converters, control laws, etc.). This represents a significant and systematic work, which limits the implementation of FC in embedded applications. In this work, the objective is to study the feasibility of a single hybrid component acting as a power and energy source for which energy management is transparent to the user and does not require the addition of another hybridization. This work is part of collaboration with the French company HELION Hydrogen Power. After a presentation of the insertion of FC in aeronautics centered on the direct hybridization, two major themes are approached: - The first concerns the study of interactions between FC and ultracapacitors in a direct association according to three approaches: theoretical, experimental and simulation. - The second concerns the experimental validation of three hybridization architectures for FC considered in previous studies in the laboratory: an architecture for which the indirect storage has its converter, an architecture with indirect storage on the DC bus and a direct hybridization architecture. The objective of this work is to increase the level of technological Readiness level of these concepts, and to compare the different ways considered to achieve the hybridization of a fuel cell system according to specific standards.
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https://tel.archives-ouvertes.fr/tel-00821123
Contributor : Cécile Daguillanes <>
Submitted on : Tuesday, May 7, 2013 - 3:34:12 PM
Last modification on : Friday, October 23, 2020 - 4:36:27 PM
Long-term archiving on: : Thursday, August 8, 2013 - 4:06:49 AM

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  • HAL Id : tel-00821123, version 1

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Benoît Morin. Hybridation d'une pile à combustible par des supercondensateurs : vers une solution passive et directe. Energie électrique. Institut National Polytechnique de Toulouse - INPT, 2013. Français. ⟨tel-00821123⟩

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