Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Modified Cascaded Z-Source High Step-Up Boost Converter

Version 1 : Received: 17 October 2020 / Approved: 19 October 2020 / Online: 19 October 2020 (14:54:47 CEST)

A peer-reviewed article of this Preprint also exists.

Salehi, N.; Martínez-García, H.; Velasco-Quesada, G. Modified Cascaded Z-Source High Step-Up Boost Converter. Electronics 2020, 9, 1932. Salehi, N.; Martínez-García, H.; Velasco-Quesada, G. Modified Cascaded Z-Source High Step-Up Boost Converter. Electronics 2020, 9, 1932.

Abstract

To improve the voltage gain of step-up converters, cascaded technique is considered as a possible solution in this paper. By considering the concept of cascading two Z-source networks in a conventional boost converter, the converter takes the advantages of both impedance source and cascaded converters. However, by applying some modifications, the proposed converter provides high voltage gain while the voltage stress of switch and diodes are still low. Moreover, the low input current ripple of the converter makes it absolutely appropriate for photovoltaic applications in order to expand the lifetime of PV panels. After analyzing the operation principles of the proposed converter, simulation and experimental results of a 100W prototype are presented to verify the proposed converter performance.

Keywords

High step-up converter; Impedance source converter; Z-source converter; Cascaded technique

Subject

Engineering, Electrical and Electronic Engineering

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