Letteratura scientifica selezionata sul tema "Système multi-piles à combustible"
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Articoli di riviste sul tema "Système multi-piles à combustible"
Wilson, R. J. A. "UBC Excavations of the Roman Villa at Gerace, Sicily: Results of the 2019 Season". Mouseion 18, n. 3 (1 settembre 2022): 379–534. http://dx.doi.org/10.3138/mous.18.3.04.
Testo completoCANDUSSO, Denis, Raynal GLISES, Daniel HISSEL, Jean-Marie KAUFFMANN e Marie-Cécile PERA. "Piles à combustible PEMFC et SOFC - Description et gestion du système". Chimie verte, ottobre 2007. http://dx.doi.org/10.51257/a-v1-be8595.
Testo completoHISSEL, Daniel, Michel CASSIR, Claude LAMY e Gilles TAILLADES. "Systèmes de piles à combustible - Applications stationnaires et mobilités terrestres". Conversion de l'énergie électrique, gennaio 2024. http://dx.doi.org/10.51257/a-v1-d3343.
Testo completoGAVE, Gérard. "Piles à combustible". Conversion de l'énergie électrique, giugno 1988. http://dx.doi.org/10.51257/a-v1-d3920.
Testo completoTAILLADES, Gilles, Michel CASSIR, Daniel HISSEL e Claude LAMY. "Systèmes de piles à combustible - Applications fluviale, maritime, aérospatiale et portable". Conversion de l'énergie électrique, febbraio 2024. http://dx.doi.org/10.51257/a-v1-d3344.
Testo completoBenchouia, Nedjmeddine, Aoual Elias Hadjadj, Abdallah Derghal, Lakhdar Khochemane e Bouziane Mahmah. "Modeling and validation of fuel cell PEMFC". Journal of Renewable Energies 16, n. 2 (22 ottobre 2023). http://dx.doi.org/10.54966/jreen.v16i2.386.
Testo completoAzri, Yamina Mounia, Insaf Tou, Meriem Sadi e Yacine Bouzidi. "Production d’électricité verte via une plante vivante ‘Watsonia sp’ dans la pile à combustible microbienne". Journal of Renewable Energies 18, n. 1 (18 ottobre 2023). http://dx.doi.org/10.54966/jreen.v18i1.486.
Testo completoFÉRON, Damien, e Alain BERGEL. "Piles à combustible utilisant des enzymes et des biofilms comme catalyseurs". Chimie verte, gennaio 2008. http://dx.doi.org/10.51257/a-v1-re89.
Testo completoTesi sul tema "Système multi-piles à combustible"
Tekin, Mestan. "Contribution à l'optimisation énergétique d'un système pile à combustible embarqué". Besançon, 2004. http://www.theses.fr/2004BESA2054.
Testo completoThis work deals with fuel cell (FC) generator developments for transportation applications. FC main advantages are essentially their low level of pollution and their potential of higher fuel efficiency. So, FC technology is being developed as a potential alternative to the conventional internal combustion engine vehicle and proposes a real opportunity to build a clean vehicle. However, before seeing FC vehicles on the market, many technological bolts must be removed. Among them, energy optimization of the complete FC system still remains to be improved. Indeed, ancillary circuits of FC generator, necessary to its correct operation, put a great strain on overall system efficiency. Among these ancillaries, air supply circuit based on motor-compressor group is the most power-hungry. Consequently, in order to reduce motor-compressor group energy consumption and by this fact to increase the overall system efficiency, three action levels were considered on air supply circuit. The first one is the choice of compressor and driven motors technologies suitable for fuel cell transportation applications. To reach this aim, a non-lubricated rotary vane compressor and a brushless machine were chosen to supply with air a proton exchange membrane type FC. The second one is the elaboration of an air flow controller which allows supplying just the required air quantity to FC. A non-linear type regulator was therefore developed using fuzzy logic. Finally, the last action was carried on motor-compressor management and on its air flow solicitation evaluation for an embedded FC system. This energy management of the motor-compressor was optimized thanks to particle swarm optimization method
Zuo, Jian. "Développement de stratégies de gestion conjointe de la détérioration et de de l'énergie pour un système multi-piles à combustible PEM". Electronic Thesis or Diss., Université Grenoble Alpes, 2022. http://www.theses.fr/2022GRALT077.
Testo completoFuel cell systems offer a sustainable solution to electrical power generation in the transportation sector, even if they still encounter reliability and durability issues. Resorting to Multi-stack Fuel Cells systems (MFC) instead of single fuel cells is a promising solution to overcome these limitations by optimally distributing the power demand among the different stacks while taking into account their state of health, by means of an efficient Energy Management Strategy (EMS). In this work, different strategies have been developed for vehicle applications, with the objective of optimizing the fuel cell system lifetime.The first challenge is to develop a model linking the deterioration trend of each stack with the power delivered by the stack, so as to predict the effect of a load allocation on each stack deterioration, and thus make a relevant post-prognostics decision. Several stochastic deterioration models, from the classical Gamma process model to more complex models with random effects are developed and tailored to the fuel cell specificities. Based on these models, several post-prognostics decision-making strategies for an MFC are proposed and, for each of them, the associated optimization problem is formulated.First, under a constant load profile, taking into consideration both the expected whole fuel consumption and the expected deterioration in the decision-making process, a deterioration-aware energy management strategy is proposed for a three-stack fuel cell system. The multi-objective optimization problem associated to this strategy is solved using an evolutionary algorithm, giving the optimized load allocations among stacks. The average lifetime obtained under the proposed strategy is demonstrated to be larger than those resulting from the classical Average Load and Daisy Chain strategies.Furthermore, under a random dynamic load profile, taking into consideration the deterioration phenomena due to both the load magnitude and the load variations, an event-based decision-making strategy is built for a two-stack fuel cell system. The optimal load allocations are obtained by minimizing the objective function which is estimated based on the prevision of the future system deterioration. An investigation on the influence of the random dynamic loads on the proposed strategy performance shows that the average lifetime obtained with unknown event duration is close to that with known event duration, which proves the robustness of the proposed strategy. Moreover, it is shown that the average system lifetime is increased when compared to the case with an Average Load strategy, on several different stochastic deterioration models.Lastly, a more exploratory study opening research perspectives in the case where the multi-stack system is composed of three stacks, only two of which are operating at the same time. To optimize the lifetime of the stacks, while meeting the load demand, the EMS must also optimize the start and stop of the different stacks. In fact, the optimization of stack replacement is also required for a long-term operation task. Therefore, this study opens the way to maintenance approaches to multi-stack systems
Le, Thi Chi. "Production d’hydrogène par un système de reformage de bioéthanol en vue de l’alimentation d’une pile à combustible PEM". Paris, ENMP, 2008. http://www.theses.fr/2008ENMP1559.
Testo completoIn the reduction of greenhouse gas emissions context, the use of hydrogen is a promising solution since it is a clean source of energy. Therefore, PEM fuel cells that convert hydrogen into electricity by an electrochemical way, appear to be a future alternative for automotive, portable or stationary applications. Because the storage and distribution of hydrogen actually still show difficulties, the on-board hydrogen production from bio-ethanol reforming – an environmentally friendly fuel – is an alternative solution. Therefore, a new kind of power plant has been designed in this work. It is mainly made up of a bio-ethanol steam reforming unit, a reformate purification system based on a hydrogen permeating membrane, a PEM fuel cell and a burner fed by the non-permeated gases. The benefit of using a membrane instead of a classical chemical purification way is that it considerably reduces the volume of the system. In this work, theoretical simulations of different architectures of power plants have shown the interest of using a membrane power plant instead of a chemical purification power plant in terms of global energetic yield and dimensions. Furthermore, an experimental setup made of reforming and membrane purification units has been designed and built, and experiments have been carried out to develop a kinetic model of the bio-ethanol steam reforming and a permeance model, in order to design these units. Based on these models, two membrane power plants are proposed: the first one is optimized for automotive application; the second one is optimized for stationary or small portable power use, with the best compromise between performance and dimensions
Massonnat, Pierre. "Développement d'un modèle multi physique multidimensionnel de pile à combustible à membrane échangeuse de proton en temps réel pour système embarqué". Thesis, Belfort-Montbéliard, 2015. http://www.theses.fr/2015BELF0268/document.
Testo completoThe fuel cell is an electric generator which uses an electrochemical effect discovered in 18 century by ChristianSchönbein. This technology has gotten successively periods of development and periods of void in the pastdecades. After the petrol barrel price rising and the people¿s awareness of environmental problem such asgreenhouse effect, the research in fuel cell field has been increasing constantly. Its higher efficiency compared tothermal technology to produce electricity, the possibility to use no fossil fuel and no pollution final products make thefuel cell an attractive substitution candidate for energy production. However, its cost, life time, power density andother problems related to the fuel storage do not allow it to replace immediately the actual technology which is elderand benefit about scale economy effect. Thus, the fuel cell technology must be improved to become economicallyviable.One of the ways to do it, is to model the fuel cell in order to reflect, analyze and better understand its behavior with aminimal cost. Unfortunately, the fuel cell is a complex system which combines fluidic, thermic and electrochemicaleffects. In literature, many one dimensional real time models have been developed. But to analyze and predict localphenomena, a 2 dimensional model is needed. However, the general two dimensional models use finite elementcalculation methods that cannot be done in real time due to their complex mathematical calculation. In spirit toovercome this calculation complexity problem, the challenge of this thesis is defined: develop a 2 dimensional modelwho are able to be executed in real time on an ordinary computer or an embedded system.In order to achieve the desired real time performance, the physical, mathematical and computer concepts of realtime 2D fuel cell model are developed, combined and integrated with specific organization methods in a C languageprogram which does not requires an important calculation power or memory to run. All the modeling assumptionsand the modified mathematic methods are implanted following an innovative modeling approach.Finally, a 2D, multiphysique, multidimensional real time fuel cell model is developed and its parameters are adjustedwith a real fuel cell stack from different experiments. The results are then analyzed with a structured observationmethod with conclusions given at last
Silva, Sanchez Rosa Elvira. "Contribution au pronostic de durée de vie des systèmes piles à combustible PEMFC". Thesis, Besançon, 2015. http://www.theses.fr/2015BESA2005/document.
Testo completoThis thesis work aims to provide solutions for the limited lifetime of Proton Exchange Membrane Fuel Cell Systems (PEM-FCS) based on two complementary disciplines:A first approach consists in increasing the lifetime of the PEM-FCS by designing and implementing a Prognostics & Health Management (PHM) architecture. The PEM-FCS are essentially multi-physical systems (electrical, fluid, electrochemical, thermal, mechanical, etc.) and multi-scale (time and space), thus its behaviors are hardly understandable. The nonlinear nature of phenomena, the reversibility or not of degradations and the interactions between components makes it quite difficult to have a failure modeling stage. Moreover, the lack of homogeneity (actual) in the manufacturing process makes it difficult for statistical characterization of their behavior. The deployment of a PHM solution would indeed anticipate and avoid failures, assess the state of health, estimate the Remaining Useful Lifetime (RUL) of the system and finally consider control actions (control and/or maintenance) to ensure operation continuity.A second approach proposes to use a passive hybridization of the PEMFC with Ultra Capacitors (UC) to operate the fuel cell closer to its optimum operating conditions and thereby minimize the impact of aging. The UC appear as an additional source to the PEMFC due to their high power density, their capacity to charge/discharge rapidly, their reversibility and their long life. If we take the example of fuel cell hybrid electrical vehicles, the association between a PEMFC and UC can be performed using a hybrid of active or passive type system. The overall behavior of the system depends on both, the choice of the architecture and the positioning of these elements in connection with the electric charge. Today, research in this area focuses mainly on energy management between the sources and embedded storage and the definition and optimization of a power electronic interface designated to adjust the flow of energy between them. However, the presence of power converters increases the source of faults and failures (failure of the switches of the power converter and the impact of high frequency current oscillations on the aging of the PEMFC), and also increases the energy losses of the entire system (even if the performance of the power converter is high, it nevertheless degrades the overall system)
Talj, Reine. "Modélisation et commandes non linéaires du système d’air des piles à combustible type PEM (Proton Exchange Membrane)". Paris 11, 2009. http://www.theses.fr/2009PA112139.
Testo completoThis thesis deals with the air supply system of PEM (Proton Exchange Membrane) fuel cells. The first part treats modelling, and consist on the reduction of the 4th order dynamical model into a simpler 3rd order one. The latter has been validated experimentally with a relative error less than 5%. The reduced model has been decomposed into the interconnection of 3 subsystems, with one of them being output strictly passive; and a cascaded control structure has been designed. A passivity based stability study results in a general methodology for tuning any controller, with guaranteed stability of the closed-loop system. Moreover, another stability study, based on the monotonicity characteristics of the system, shows that the system is locally asymptotically stabilisable around any equilibrium point, with a simple proportional or proportional-integral controller, if the feedback variable is well chosen. Many control laws have been designed to regulate the compressor air flow and the oxygen stoechiometry. The used controllers are higher order sliding mode, rst, ip, backstepping, and ors (output regulation subspaces). Experimental validation proves the performance of the second order sliding mode control, precisely, the super-twisting algoritm with variable gains
Marsala, Giuseppe. "Modélisation et réalisation d'un émulateur de système de piles à combustibles : développement des stratégies et des lois de commande". Besançon, 2008. http://www.theses.fr/2008BESA2036.
Testo completoThis thesis deals with modelling of a PEM-Fuel Cell System (FCS) for power generation in an electrical vehicle. The goal of the research is the construction of an emulator of the PEM Fuel Cell stack, that of a device having the same behaviour as the real system, and the development of command strategies for the FCS. After a bibliographical study of the models of Fuel Cell stack, a buck converter structure has been chosen and then implemented to build the emulator. The novelty of this thesis is that all the auxiliary components of a FCS have been considered in a Hardware In the Loop (HIL) fashion by using a DSPACE development platform. Several command strategies have been implemented and assessed by using the emulator, which has been designed with a high bandwidth. The voltage control of the emulator has been accomplished by using the “State Variable Feedback”, which is a pole-placement technique for achieving the desired bandwidth and dynamical and steady-state performance. The particular case of control of the air-management system has been considered and used to asses the emulator. Actually several control strategies (static feedforward, PI) have been studied and their results compared also by using a novel neural network based command strategy. This neural network implements the inversion of the relationship between the compressor speed and the “oxygen excess ratio”, whose regulation is a key issue for preventing the oxygen starvation of the membrane
Suárez, Santiago Hernán. "Gestion de l'énergie d'un système de piles à combustible alimenté par un réservoir d'hydrogène à hydrure métallique". Electronic Thesis or Diss., Bourgogne Franche-Comté, 2022. http://www.theses.fr/2022UBFCA019.
Testo completoThis thesis work is part of the contribution to the scientific and technological advancement of the use of renewable energies based on a PEMFC fuel cell system powered by hydrogen from a metal hydride tank. The first part of the work was devoted to the characterisation of two commercial tanks of this technology with emphasis on their performance degradation. Stochastic methods were used to study the impact of cycling (charge/discharge) on the variation of the tanks' intrinsic parameters. In a second part, the results of this study were implemented through an energy model of the tank developed under the MATLAB /Simulink environment. The model was validated experimentally on a specially designed test bench. The ageing phenomenon was highlighted, providing a significant advance, particularly with a view to the industrialisation of this type of solution. Finally, the thermo-fluidic coupling between the fuel cell and the hydride tank was experimented, modelled and numerically simulated
Wahdame, Bouchra. "Analyse et optimisation du fonctionnement de piles à combustible par la méthode des plans d'expériences". Phd thesis, Université de Franche-Comté, 2006. http://tel.archives-ouvertes.fr/tel-00163317.
Testo completoLe mémoire est divisé en six chapitres. Après un bref aperçu du fonctionnement d'une PàC et de ses contraintes (premier chapitre), l'auteur donne les éléments essentiels de la méthodologie des PE nécessaires à la compréhension de la suite du travail (deuxième chapitre). Un plan destiné à étudier l'influence des débits et des pressions, côté hydrogène et côté air, sur la puissance maximale de la pile a été réalisé sur une pile PEM 500W utilisée en mode régulation de pression (troisième chapitre). Le plan complet comporte seize essais. Les analyses de la variance pour le plan complet et pour le plan fractionnaire (huit expériences choisies judicieusement parmi les seize réalisées) ont conduit à des résultats sensiblement identiques, à savoir une influence majeure du facteur débit d'air sur le niveau de puissance maximal atteint par la pile étudiée. Les plans et les outils logiciels mis au point ont ensuite été développés et utilisés pour analyser des résultats expérimentaux collectés sur une pile PEM 5kW (chapitre quatre). Les analyses réalisées permettent de cerner clairement et d'exprimer quantitativement, pour différents niveaux de courant de charge, les incidences des paramètres température de stack, pressions et surstoechiométries des gaz réactifs sur les performances de la PàC. Une modélisation statistique de la tension de pile en fonction des paramètres étudiés est mise en œuvre pour optimiser les conditions de fonctionnement de la pile. Le cinquième chapitre est consacré à l'analyse par la Méthode des Surfaces de Réponse (MSR) de résultats expérimentaux issus d'un essai d'endurance d'une PàC 100W ayant fonctionné en régime stationnaire pendant 1000 heures. Cette étude a notamment permis de montrer l'intérêt d'adopter des surstoechiométries variables au cours du temps pour aboutir d'une part à des performances élevées en terme de tension de pile et d'autre part à une diminution de la variabilité des tensions de cellules. Le dernier chapitre montre comment les PE peuvent contribuer à une meilleure compréhension des phénomènes physiques intervenant dans les PàC. Trois domaines sont considérés : les pertes de charge dans les plaques bipolaires distributrices des gaz réactifs, l'impact de l'humidification sur la variation de la résistance interne de la pile et le vieillissement à une température de fonctionnement supérieure à la valeur nominale.
L'ensemble des travaux réalisés montre comment la méthode des plans d'expériences peut être un moyen approprié pour caractériser, analyser et améliorer le système complexe que représente un générateur PàC.
Ketep, Françoise. "Piles à combustible microbiennes pour la production d'électricité couplée au traitement des eaux de l'industrie papetière". Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENI066/document.
Testo completoThe objective of this thesis was to assess the feasibility of the microbial fuel cell technology for the production of electrical energy coupled with the treatment of pulp and paper effluents. The first part of work showed that various pulp and paper effluents are suitable to form efficient anodic biofilms. When the effluent was supplemented with acetate and the anode polarized between at -0.3 V/SCE, current densities of 12 A/m² and Coulombic efficiencies up to 90% were obtained. When effluents were provided as the sole substrate, current densities reached 6 A/m² and Coulombic efficiencies 30%, with COD removal around 50%. The optimal anodic biofilms were associated with associated with abiotic air cathodes to design complete microbial fuel cells. Power densities from 294 mW/m² to 596 mW/m² were obtained with two different effluents
Libri sul tema "Système multi-piles à combustible"
Michael, Stephen A. Poor man [sic] hydrogen generator on demand: A step-by-step building guide : SMCS HHO stephens multi cell systems hydrogen generator on demand. [Place of publication not identified]: Authorhouse, 2011.
Cerca il testo completoSharifzadeh, Mahdi. Design and Operation of Solid Oxide Fuel Cells: The Systems Engineering Vision for Industrial Application. Elsevier Science & Technology Books, 2019.
Cerca il testo completoMaric, Radenka. Solid Oxide Fuel Cells: From Fundamental Principles to Complete Systems. Taylor & Francis Group, 2020.
Cerca il testo completoMaric, Radenka. Solid Oxide Fuel Cells: From Fundamental Principles to Complete Systems. Taylor & Francis Group, 2020.
Cerca il testo completoMaric, Radenka. Solid Oxide Fuel Cells: From Fundamental Principles to Complete Systems. Taylor & Francis Group, 2020.
Cerca il testo completoMaric, Radenka. Solid Oxide Fuel Cells: From Fundamental Principles to Complete Systems. Taylor & Francis Group, 2018.
Cerca il testo completoAtti di convegni sul tema "Système multi-piles à combustible"
Nijhawan, Sunil. "Challenges in Multi-Unit CANDU Reactor Severe Accident Mitigation Strategies". In 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60689.
Testo completoJane, Robert, Corey James, Samantha Rose e Tae Kim. "Developing Artificial Intelligence (AI) and Machine Learning (ML) Based Soft Sensors for In-Cylinder Predictions with a Real-Time Simulator and a Crank Angle Resolved Engine Model". In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0102.
Testo completoHeadings, Leon M., Gregory N. Washington, Shawn Midlam-Mohler e Joseph P. Heremans. "High Temperature Multi-Fuel Combustion-Powered Thermoelectric Auxiliary Power Unit". In ASME 2009 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2009. http://dx.doi.org/10.1115/smasis2009-1290.
Testo completoBrown, Alexander L., Curtis D. Mowry e Ted T. Borek. "Bench-Scale Pyrolysis of Wood Pellets". In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63718.
Testo completoShirodkar, Nishant, Samantha Rocker e Gary D. Seidel. "Structural Health Monitoring of Solid Rocket Propellants Using Piezoresistive Properties of Dispersed Carbon Nano-Tube Sensing Networks". In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8250.
Testo completoMendoza, Hector, Victor G. Figueroa, Walter Gill e Scott Sanborn. "Determining Airborne Release Fraction From DOT 7A Drums Exposed to a Thermal Insult". In 2020 International Conference on Nuclear Engineering collocated with the ASME 2020 Power Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icone2020-16755.
Testo completoBounaceur, Roda, Pierre-Alexandre Glaude, Baptiste Sirjean, René Fournet, Pierre Montagne, Matthieu Vierling e Michel Molière. "Prediction of Flammability Limits of Gas Mixtures Containing Inert Gases Under Variable Temperature and Pressure Conditions". In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64172.
Testo completoLisjak, A., O. K. Mahabadi, J. Andersen, J. Hinkey, E. Detournay, E. Araujo e R. Rimmelin. "Development of a Novel Dynamic Formation Stimulation Technique: FDEM-Based Numerical Modelling Results". In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0285.
Testo completo