Optimisation du transfert d'énergie dans les systèmes photovoltaïques

Abstract : In various studies on photovoltaic, major progresses have been observed, both concerning the cells and also in the field of their use. In order to take advantage of the energy it has been paramount to focus on parallel High Voltage bus. This High Voltage generation requires dedicated converters. In fact, using classical converters implicates important losses in the MOSFET used for switching. In a prior study we could ascertain important losses on transistors when submitted to high voltages as we assumed. It was shown then that only the transistors supporting a voltage less than 100V can be used for our application. A systematic investigation led to the Magnetically Coupled Boost converters. Thanks to the recycling of parasitic losses, our tests show an efficiency superior than 90%. Among the different power extraction strategies, the incremental conductance MPPT was used because of its top of the arts performances and convenience. Every DC/DC implemented panel converter supplies the HVDC bus which, itself, is connected to the SMA inverter
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Pierre Petit. Optimisation du transfert d'énergie dans les systèmes photovoltaïques. Autre [cond-mat.other]. Université Paul Verlaine - Metz, 2011. Français. ⟨NNT : 2011METZ048S⟩. ⟨tel-01749187⟩

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