Dynamic analysis of quasi-Z-source converters considering parasitic elements

In this study, the Quasi-Z-source converter (QZSC) has been investigated, accounting for all parasitic elements in inductors, capacitors, and semiconductor components. The mathematical model and operational mode of the QZSC have been selected based on the state-space averaging method and continuous conduction mode. The dynamic behaviour of the system is examined using computational simulations, and the findings are presented through frequency response and pole-zero diagrams. The impact of the parasitic resistance of the inductor and capacitor on the gain of the QZSC has also been examined. Finally, the results of the simulations conducted with MATLAB software are presented to confirm the theoretical findings.