Solar PV system fed improved power quality converter with digital proportional resonant controller

The fast growing non -linearity of the loads is the root cause of the power quality issues. In this research, a novel single-phase solar photovoltaic (SPV) coupled with a Boost -Single ended primary inductor (SEPI) converter with sine MPPT is proposed. The proposed converter outperforms state-of-the-art methods in various irradiance scenarios by increasing the DC voltage range and extracting the sinusoidal peak power envelope. Maximized power extraction from the SPV module with the use of sinusoidal modulation and the Perturbs and Observe algorithm improves conversion efficiency by decreasing switching losses in the full bridge inverter. In order to ensure that the proposed system is both effective and feasible, the results of a control hardware prototype model are produced and the technique is verified using MATLAB/Simulink. The system efficiency is empirically proven at 85.6 % - 96.5 % across all load power ranges meeting various international power quality standards.