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This paper deals with the coupling of a photovoltaic generator to the grid via an inverter. The inverter is an essential part of the conversion chain used to interface the solar photovoltaic cells with the grid. This converter allows the conversion of the continuous energy produced into an alternating curre, on the one hand and the energy exchange between the photovoltaic generator (PVG) and the electrical network, on the other. A phase locked loop (PLL) was used for the synchronisation between the PV inverter and the network. T-S's fuzzy model-based control algorithm adjusts the inverter to produce as much power as possible, regardless of momentary variations in brightness and temperature levels. The mathematical models of the photovoltaic cell and the inverter were developed. To obtain a good control guaranteeing the system stability, the quadratic function of Lyapunov and the criterion of. were applied. The simulation results obtained via Matlab-Simulink prove the effectiveness of the proposed intelligent method.

Photovoltaic generator coupled on the electrical grid via an inverter