Photovoltaic connected active switched boost quasi-Z-source (ASB-qZSI)-based multi-level inverter system using Q2OGEO approach.

Abstract

An effective hybrid technique is proposed for enhancing the efficiency of photovoltaic (PV) system by an extended boost inverter called active-switched boost quasi-Z source inverter (ASB-qZSI). The hybrid approach is the combination of quasi-oppositional chemical reaction optimization (QOCRO) and golden eagle optimizer (GEO), and later called Q2OGEO approach. The main objective of the proposed system is "to increase the proficiency of PV system and the extraction of maximum power." Here, ASB-qZSI method is used to increase the voltage gain of converter in less duty cycles. The objective of the system is defined as controller-based parameters and limitations like voltages, modulation index, current, and power. The QOCRO method is utilized to regulate the system voltage, and GEO is used to regulate the current of system. The proposed Q2OGEO method efficiently controls the voltage, current, and DC link voltage and then extracts maximal power of PV system. Additionally, increasing the power delivery, voltage profile, but minimizing the total harmonic distortion (THD). By using the ASB-qZSI, control the shoot-through duty ratio to minimize the modulation burden. Then, the proposed approach is enthused on the MATLAB software, and the effectiveness is observed with existing techniques.