Modified quasi z source based multilevel inverter with optimized intelligent control technique for pv fed grid connected system

Abstract

The rising demand for electrical energy has results in increased fossil fuel consumption, particularly as traditional energy sources like coal and oil become diminishing. To address the needs of future generations without harming the climate, Renewable Energy Sources (RES) play a vital role in power sector. The photovoltaic (PV) system is accessible throughout the year, which serves as an alternative energy source and it is pollution-free and cost effective. Additionally, PV systems play an important role in curbing the emissions of greenhouse gas and advancing sustainable energy practices. However, solar power generated by PV systems remains subject to instability, intermittency, and seasonal variations. Therefore, in this research work, a novel Modified Quasi Z-Source Inverter based Cascaded Multilevel Inverter (MQZSI-CMLI) with RENCO optimized PI for PV fed grid tied system is proposed. The combination of MQZSI and the CMLI enables the system to maintain output stability and quality even when the input power from the PV system fluctuates. The Z-source design in the inverter topology dynamically adjusts the DC link voltage to handles variations in input voltage from the PV system. newline