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Introduction
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Publications
Publications (30)
More and more territories are looking at alternatives to diesel for their public transport to decarbonise their energy mix. Electricity and hydrogen, among the most popular alternatives, are analysed in this article on the basis of various technical, economic and environmental criteria. The consumption of these vehicles is first estimated and the f...
The consequences of climate change and reduced energy security are becoming increasingly apparent, especially on islands. At the same time, the energy transition is quickly spreading and its value to society becoming clearer. Two main obstacles to this transition, rigid policy and lack of local understanding, are particularly troubling on islands,...
Island territories, due to their specific energy context, are at the forefront of energy transition studies with the aim of achieving energy autonomy. This is the case of Reunion Island, where the electricity mix is currently 70% carbon-based and where imports provide 80% of the energy consumption. In this context, this article assesses the facilit...
In order to achieve energy autonomy in island systems, the heavy mobility sector is considering hydrogen in order to reduce its dependence on fossil fuels and its emissions. This paper shows that hydrogen could be integrated on Reunion Island to decarbonise a fleet of 100 buses and assesses the impacts of such an integration. Through a novel method...
Afin d'atteindre l'autonomie énergétique dans les systèmes insulaires, le secteur de la mobilité lourde envisage l'hydrogène afin de réduire sa dépendance aux combustibles fossiles et ses émissions. En particulier, les bus à hydrogène se développent en parallèle des bus électriques, car ils permettent une recharge plus rapide et une meilleure auton...
For several years, microgrids (MGs) integrated with smart grids have been presented as one of the promising solutions for better integration of intermittent renewable energy sources (RES). As a result, the interest for the development of MGs has increased. Due to the variability of RES as well as the non-synchronization of intermittent RES producti...
French islands are currently more than 80% dependent on imported fossil fuels. One of the objectives of the French law on Energy Transition is their energy autonomy by 2030. To reach it, hydrogen could be introduced locally, in heavy vehicles or in stationary storage. This article assesses the impact of hydrogen on the electrical grid of Reunion Is...
Microgrids operating on renewable energy resources have potential for powering rural areas located far from existing grid infrastructures. These small power systems typically host a hybrid energy system of diverse architecture and size. An effective integration of renewable energies resources requires careful design. Sizing methodologies often lack...
To deal with energy transition due to climate change and a rise in average global temperature, photovoltaic (PV) conversion appears to be a promising technology in sunny regions. However, PV production is directly linked with weather conditions and the day/night cycle, which makes it intermittent and random. Therefore, it makes sense to combine it...
Le concept de système de gestion de l'énergie (SGE) répond aux défis énergétiques relatifs aux sources d'énergie renouvelables (ENR) et à la protection de l'environnement. L'expansion des ressources énergétiques distribuées représente un changement de paradigme dans les réseaux électriques, rendant les micro-unités de production et de stockage pert...
Energy management has become a very popular topic in the past few years, especially with the protection of the environment. The use and management of renewable energy sources (RES) has therefore become a necessity. In this context, innovative EMSs (Energy Management Systems) are required to bring a new way to monitor energy flows in micro grids. Th...
An artificial neural network (ANN) is used for modeling electrochemical process in a porous cathode of SOEC. The neural network has the following input parameters: the overvoltage, the hydrogen and steam composition at electrode/electrolyte interface. Data for training and validating the ANN simulator is extracted from a validated model. Once the m...
This work highlights the gains of an innovative model-based control approach applied to a proton exchange membrane fuel cell (PEMFC) system, included in a stand-alone hybrid generator. This approach proposes a multivariable setpoint tracking of the PEMFC output power and temperature. The freshness of this approach is based on the combination of a n...
Classical solid oxide fuel cell anode (Ni–cermet) could be employed as solid oxide electrolysis cell cathode. Ni–cermet has been synthesized and tested as solid oxide electrolyzer cathode using three-electrode techniques between 700°C and 900°C. yttria stabilized zirconia was used as the electrolyte and Pt as the counter electrode. Polarization cur...
A one-dimensional model has been developed to model the mass and charge transfer occurring in the water reduction on nickel-cermet. An artificial neural network (ANN) was identified and validated from this model. The ANN, in equation form, was used in a three-dimensional model of a serial repeat unit of a Solid Oxide Electrolysis Cell stack. The el...
Based on Solid Oxide Fuel Cell (SOFC) technology, Solid Oxide Electrolysis Cell (SOEC) offers an interesting solution for
mass hydrogen production. This study proposes a multiphysics model to predict the SOEC behavior, based on similar charge,
mass, and heat transport phenomena as for SOFC. However, the mechanism of water steam reduction on Nickel/...
Ni-Cermet and LSM were synthesized and tested respectively as solid oxide electrolyser cathode and anode using three-electrode techniques between 973K and 1173K. YSZ was used as the electrolyte and Pt as the counter electrode. Polarization curves and impedance spectra have been analyzed for different gas compositions. The present results highlight...
The aim of this work is to optimize an interconnect design. A three-dimensional model have been developed in order to investigate the effect of interconnect design on electrical performance and degradation process. Oxygen concentration, potential, current density and temperature distribution in interconnect and SOFC cathode have been calculated. Ca...
Electrochemical systems can be used with reversible functions, e.g., electric production in solid oxide fuel cell mode and hydrogen production in solid oxide electrolysis cell (SOEC). A model using the COMSOL Multiphysics® software package to simulate the behavior of a planar SOEC is put forward. Modeling is based on solving coupled equations of ma...
Based on solid oxide fuel cell (SOFC) technology, solid oxide electrolysis cell (SOEC) offers an interesting solution for mass hydrogen production. This study proposes a multiphysics model to predict the SOEC behavior, based on similar charge, mass and heat transport phenomena as for SOFC. However the mechanism of water steam reduction on Nickel/Yt...