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Theses

Design of an LVDC grid based on renewable energy sources and multiple types of electrochemical storage elements

Kolja Neuhaus 1
1 LAAS-ISGE - Équipe Intégration de Systèmes de Gestion de l'Énergie
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : In the context of an energy, ecological and climate crisis, integrating renewable energy sources in electrical grids appears as an absolute necessity. A bibliographic study of renewable energy production technologies, energy storage elements and electrical grids with a specific focus on LVDC micro-grids is proposed in this thesis. Modeling methodologies for the photovoltaic energy production of the BIPV platform ADREAM of LAAS-CNRS based on the building's integrated database as well as for multiple electrochemical storage technologies such as lead, lithium polymer and hybrid carbon batteries. Hydrogen is investigated as possible vector of energy for the future. An overview of industrial hydrogen applications and usages of hydrogen as energy storage is given as well as an insight on the concept of hydrogen production through water electrolysis using photovoltaic sources, named "solar fuels". A prototype of a solar to hydrogen energy conversion chain was designed in collaboration with the RCAST laboratory, Tokyo. The prototype serves as an experimental part for this thesis and is composed of high efficiency triple junction photovoltaic cells, small scale electrolyzer cells, distributed Buck and Boost micro-converter architectures and lithium storage elements with the goal of achieving high solar to hydrogen conversion efficiency while permitting precise control.
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Kolja Neuhaus. Design of an LVDC grid based on renewable energy sources and multiple types of electrochemical storage elements. Electric power. Université Paul Sabatier - Toulouse III, 2018. English. ⟨NNT : 2018TOU30306⟩. ⟨tel-02080092v2⟩

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