Utilizing a Five-Level Inverter for Grid-Connected PV Systems: Implementing an MPPT Algorithm with Super Twisting Sliding Mode Control

This study highlights the effectiveness of a Super Twisting Sliding Mode Control (STSMC) type nonlinear controller based on Lyapunov stability to improve the ability to extract optimal power under varying weather conditions from the algorithm maximum power point tracking (MPPT). Additionally, this study investigates the benefits of using a multi-level inverter in a grid-connected photovoltaic (PV) energy conversion system. The studied system consists of a PV generator associated with a voltage rise chopper controlled by an MPPT algorithm based on the STSMC controller. Then, the energy generated by the PV system is injected into the electrical grid via a three-phase level three inverter. The results of the simulations carried out using the MATLAB/Sim software showed that the system exhibited good performance in terms of the quality of the energy generated by the PV system and the energy extraction efficiency for data variable weather