Performance Analysis of Z-Network Plus Switched-Capacitor Boost DC-DC Converter

Abstract

A multi-stage conversion is necessary when a basic DC-DC boost converter (BBC) raises the low voltage of PV panels to a high voltage, which is then used as the dc-link voltage of the inverter. The aim can be achieved with this multi-stage power electronic conversion, but more intermediate converters are needed. Additional converters increase the number of components while also lowering overall efficiency, which lowers reliability. The Z-Source Inverter (ZSI) is a practical alternative that not only carries out single-stage power conversion (boosting plus DC-AC conversion), but also successfully gets rid of the drawbacks of the traditional voltage-source and current-source inverters. Switching Inductor (SL) cells are used in place of the Z-Source Inverter (ZSI) inductors to maximize voltage gain. This device replaces one of the inductors of the QZSI with an SL cell (QZSI). The Z-network combined with Switched-Capacitor Boost DC-DC Converter (ZSCBC) with ANFIS Controller is suggested in this project to achieve high gain for a range of duty ratios. The Z-network plus Switched-Capacitor DC-DC Boost Converters with ANFIS controller developed in MATLAB Simulink and also with PI controller. The dynamic performance of the Z-network plus Switched-Capacitor DC-DC Boost Converters with ANFIS controller is compared with that of PI controller. Keywords: Boost converter, Switched-Capacitor, Quasi-Z Source DC-DC Converter, Z-source Inverter.