Evaluation of Robust Controllers in Photovoltaic Systems: A Comparative Analysis

Abstract

The main objective of this work is to compare and evaluate the performance of three advanced control techniques, namely Sliding Mode Control (SMC), Synergetic Control (SC) and Adaptive Sliding Mode Control (ASMC) for Maximum Power Point (MPP) extraction in a photovoltaic system under different atmospheric conditions. This study aims to identify the most robust, fast and efficient control strategy to optimize solar power production, while minimizing oscillations and improving system stability. Through accurate modeling of the PV system and simulations under varying operating conditions, we highlighted the strengths and limitations of each technique. Synergetic Control demonstrated superior performance by ensuring fast and precise tracking of the maximum power point, while significantly reducing the chattering phenomenon commonly observed in classical SMC. ASMC also showed notable improvements in adaptability and robustness compared to traditional SMC. In conclusion, this study confirms that robust control techniques offer promising solutions to enhance the energy performance of photovoltaic systems, especially in a global context where renewable energy sources are playing an increasingly vital role.