Etude Et Optimisation D’un Multi Systeme Hybride De Conversion D’energie Electrique
Résumé: This thesis deals with the application of hybrid output connected to the grid which are composed of a wind turbine, a photovoltaic source, and a unit for a fuel cell for energy continuity. A simple and cost control with DC-DC converter is used to extract the maximum power from wind and photovoltaic sources. Due to the intermittent of these two energy sources, the nature of photovoltaic and wind, a fuel cell unit is added to the system in order to ensure a flow of direct current. The fuel cell is thus controlled to provide power deficit when combined wind and solar sources cannot meet the demand of the net power. A complete description of this system is presented with simulation results that demonstrate its feasibility. A tracking algorithm of the maximum power calculates the reference speed, which is corresponding to the maximum power output of the turbine, as a control signal for the DC-DC converter. The optimization of our system in this setting by PI, fuzzy logic (RLF) , fuzzy PI (RLF-PI)and sliding mode that maximizes the maximum power point (MPP) of a photovoltaic system, the speed control system wind and control the active and reactive power of the grid.
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