Enhanced Photovoltaic System by Implementing Fuzzy Logic MPPT Strategy for Control of Four-Switch Z-Source Inverter

Abstract

This study aims to enhance the efficiency of a conventional inverter by analyzing a Z-source, four-switch, three-phase system connected to a PV generator. This system allows the transmission of electricity to the power grid. In addition, this inverter is more efficient due to its integration of the booster chopper and inverter functions into a single stage. We also employed a space-vector pulse-width modulation (S.V.P.W.M.) control approach to regulate the F.S.T.P. and Z-source inverters. We enhance the Z-source network by adding a shoot-through state, which reduces Total Harmonic Distortion (THD) and improves efficiency. The solar generator (G.P.V.) achieves its maximum power output through fuzzy logic and the highest Power Point Tracking (MPPT) approach. We generated simulator results using the M.A.T.L.A.B. Simulink software to assess the validity of the proposed research.