Title: A new high step-up soft switching converter for photovoltaic system

Authors: Mahmood Vesali; Majid Delshad; Ali Khajeh Naeini

Addresses: Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Arghavanieh Blvd, Jey St., Isfahan, Postal Code: 81551-39998, Iran ' Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Arghavanieh Blvd, Jey St., Isfahan, Postal Code: 81551-39998, Iran ' Department of Electrical Engineering, Najaf Abad Branch, Islamic Azad University, University Blvd, Najafabad, Isfahan, Postal Code: 85141-43131, Iran

Abstract: In this paper, a new DC-DC boost converter with ZCS condition is presented. The ZCS condition of the proposed converter is established without adding any auxiliary switches and with minimum auxiliary elements, so the converter efficiency is high. The converter is controlled by pulse width modulation for which the design and implementation of the control circuit for the converter is very simple. The proposed converter has low current and voltage stress on the switch and the other advantage of the converter is high voltage gain due to existence of coupled inductors and voltage lifting in output, therefore the proposed converter is very suitable for photovoltaic systems. The experimental results verify the theoretical analysis and the converter efficiency at full load is approximately 96%.

Keywords: DC-DC converter; soft switching; zero voltage switching; ZVS; zero current switching; photovoltaic systems.

DOI: 10.1504/IJPELEC.2022.119798

International Journal of Power Electronics, 2022 Vol.15 No.1, pp.131 - 140

Received: 01 Jan 2019
Accepted: 30 Sep 2019

Published online: 16 Dec 2021 *

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