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Bifurcations and Chaos in a Photovoltaic Plant

This paper presents a comprehensive approach to analyze the dynamics of a photovoltaic system by using a discrete-time modeling approach. The proposed structure consists of a photovoltaic array, a two-cell DC–DC buck converter and a load connected in cascade through a DC bus. The research efforts focus on the modeling process and stability analysis, which leads to an implementation with a comprehensive description validated through simulation results. The research efforts focus on the numeric simulation improvements and dynamic investigation of the photovoltaic system under digital controls. The chaotic behaviors that appear in the photovoltaic plant are then studied. The aim of the last part is to detail the stability study using numerical simulation.