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Contribution à l'amélioration des chaines de conversion photovoltaiques par l'introduction d'architectures distribuées

Bruno Estibals 1
1 LAAS-ISGE - Équipe Intégration de Systèmes de Gestion de l'Énergie
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : Photovoltaic solar energy is a renewable form of energy to produce electricity by converting a portion of solar radiation through solar photovoltaic modules, comprising several interconnected photovoltaic cells. Local impacts of solar power are very low: no noise, no emissions and, visually, a relative or discretion, for certain structures of building integrated real elegance. The electrification by PV energy is an alternative habitat for a remote site, away from the grid. It covers the domestic needs of a principal residence by using standard devices (small appliances, televisions, hi-fi, computing, etc ...) and specific energy efficient equipment (lighting and refrigeration). The photovoltaic system is connected to a grid for emerging distributed generation of electricity. Anyone with a residential home, a communal building or other location capable of receiving a field of photovoltaic modules, can become a producer of renewable energy by injecting all or part of its electricity locally produced in the public distribution system. However, to date, the massive development of PV energy as a means of power generation connected to the grid, remains handicapped by its production cost is still very high. It is in this context are the research presented in this authorization to conduct research. Since 1996, research LAAS were oriented Optimization, Management and Treatment of Energy, and specifically on optimizing channels modular photovoltaic power conversion, complementing the French scientific community, mainly oriented towards the synthesis of materials and development of new types of cells. The objective is to design, build and characterize systems in association with a strong technological integration aspect. Currently, different management architectures photovoltaic energy are offered on the market and help develop more or less the production of such energy. Our goal is here to develop discretized DC-DC architectures conversion chains that provide innovative techn ology solutions in terms of improving the efficiency of the conversion chain, with a strong integration of the whole. After recalling the concept and validity of the concept of discretization, we focus on the study of micro-converter for a tandem photovoltaic cell. Finally, we propose various research perspectives inherent to the topic of PV. Although the provision of decentralized energy has many advantages, the transition to a "smart grid" represents several challenges. One of the major electricity networks of the future involves the assimilation of intermittent power generation. The development of renewable energy sources of electricity generation decentralized, is often hampered by an inadequate means of production with the operation of the existing network. Thus, based on the observation that the intermittent production of energy is difficult to integrate the grid and does not correspond to periods of peak demand, we will consider different ways to incorporate the production of electricity from renewable sources, including the introduction of storage facilities. To validate our approach which is global on the issue of energy, we discuss the formation of the demonstrator ADREAM under construction at LAAS-CNRS, designed from the outset as a validation tool scale.
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Habilitation à diriger des recherches
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Submitted on : Tuesday, December 14, 2010 - 11:18:10 AM
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Bruno Estibals. Contribution à l'amélioration des chaines de conversion photovoltaiques par l'introduction d'architectures distribuées. Micro et nanotechnologies/Microélectronique. Université Paul Sabatier - Toulouse III, 2010. ⟨tel-00546390⟩

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