Nonlinear Controller Design for Photovoltaic Powered Single-Inductor Dual-Output Boost DC-DC Converter

This paper introduces a nonlinear dynamic model for a DC-DC Multilevel Boost Converter (MBC) connected to a solar PV panel. This model relies on equivalent circuits that depend on the commutation states of the converter. A PV generator is considered the main energy source in this application. Indeed, the energy produced by this generator depends mainly on metrological factors such as temperature and solar irradiation. For this reason, the backstepping technique is proposed to design the controller system that efficiently tracks the MPP, enabling smooth operation under various climatic conditions and preventing failures. The P&O algorithm is utilized to provide the controller with the output reference voltage PV. The system’s performance is evaluated in the MATLAB/Simulink environment. The results obtained provide strong validation for the effectiveness of the proposed controller, demonstrating its capability to achieve its objective even in diverse environmental conditions.