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Habilitation à diriger des recherches

Contribution à l'optimisation, la gestion et le traitement de l'énergie

Abstract : Nowadays, renewable energies become an alternative solution to the classical energies obtained from fossil resources. Renewable energies have reached a high level of development, mainly in terms of cost and production facilities. However, the electrical conversion systems are often not optimized in terms of reliability, electrical efficiency and cost production. For that, there is a lot of reticence to install these systems in home sites or in big centrals for mass energy production. Since 1997 LAAS-CNRS has focused his research in the optimization of the power conversion chains from a system point of view. Indeed, due to the inexistence of optimal solutions for these electrical systems and the absence of research groups in France interested in this problem, the research goals were finally centered on the electrical conversion and thermal management of photovoltaic energy systems. First works were focused in the optimization of conversion efficiency. For that, LAAS-CNRS has developed and installed a complete outdoor photovoltaic system. The PV demonstration site has 1 kW of peak power and an automatic measurement system capable of characterize the electrical efficiency of different power conversion structures with high level of precision. Novel power conversion structures devoted for photovoltaic systems have been developed in collaboration of foreign research groups like the GAEI from University Rovira i Virgili (Tarragona) and the EPIC from the Polytechnic University of Catalonia (Barcelona). Meteorological dependence of the renewable energy sources produces a low level of predictability of the energy production. In order to produce energy without strong variations we have coupled different energy sources like PV generators and small wind generators by means of batteries. Additional studies have been made regarding to the optimal battery management. Maturity in the studies of the photovoltaic systems shows news trends and new possible applications of this systems in the field of microsystems and on-board systems with low power processing capabilities. We have then developed in 2000 a new research goal based in the integrated microsources and microconverters for microsystems applications. In fact, nowadays the research conducted in the optimization of static converters can be generalized in a great number of applications depending on the required power supply. The objectives are size and volume minimization limiting the development cost. New power supplies regardless of the final application (military, spatial, telecommunications&) must be compact, semi-integrated or, in the future, fully integrated. For that, they have to be modeled with a high level of precision to attain from the first steps of design costs restrictions, frequency requirements and power density specifications. In fact, the objective for the next years is to obtain a series of new power supplies, adapted in size for their applications, with high power conversion efficiencies.
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Habilitation à diriger des recherches
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Submitted on : Thursday, March 23, 2006 - 12:02:39 PM
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  • HAL Id : tel-00012019, version 1


Corinne Alonso. Contribution à l'optimisation, la gestion et le traitement de l'énergie. Micro et nanotechnologies/Microélectronique. Université Paul Sabatier - Toulouse III, 2003. ⟨tel-00012019⟩



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