Contribution to the Synergetic Control of Stand-Alone Photovoltaic Energy Production Installation

Abstract

Among the different renewable energy resources, photovoltaic energy has found increased attention and wide attraction from researchers in many applications, for its capabilities of direct electric energy conversion without any environmental damage, ease of implementation, flexibility in size and low operation cost. The performance of the PV system is mainly depended to temperature, irradiation, dirt and shadows during its operation. Thus, we should extract the maximum power available by the photovoltaic generator (PVG) and transfer it to the load to enhance the PV system’s efficiency at any moment although PV units are exposed to non-uniform climate changes. Competent maximum power point tracking (MPPT) technique is needed to track the MPP and maintain the operating point of the PV system at the MPP under any cases. The main purpose of this thesis work is to develop and implement new nonlinear MPPT strategies based on Synergetic Control (SC) and Fast Terminal Synergetic Control (FTSC) able to track the MPP for stand-alone PV system under different conditions and therefore increase the PV system efficiency. The obtained results under different conditions have validated the developed strategies and highlighted their good performance and high robustness compared to other MPPT controllers.