High voltage-gain full-bridge cascaded dc-dc converter for photovoltaic application

Wang, Long and Hossain, Mohammad Zakir and Selvaraj, Jeyraj and Rahim, Nasrudin Abd (2018) High voltage-gain full-bridge cascaded dc-dc converter for photovoltaic application. PLoS ONE, 13 (11). e0206691. ISSN 1932-6203, DOI https://doi.org/10.1371/journal.pone.0206691.

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Official URL: https://doi.org/10.1371/journal.pone.0206691


Over the past few years, high step-up dc-dc converters have been drawn substantial attention because of their wide-ranging application not only in the renewable energy sector but also in many other applications. To acquire a high voltage gain in photovoltaic (PV) and other renewable energy applications, a high step-up dc-dc converter is proposed in this paper. The proposed converter structure consists of a full-bridge (FB) module along with an input boost inductor and a voltage multiplier based on the Cockcroft-Walton (CW) principle with a parallel inductor. The key features of the proposed converter are: 1) high voltage gain with lower voltage stress on the switches, diodes and other passive elements without affecting the number of cascaded stages, 2) a minimum size of boost inductance and cascaded stage capacitance that ensures its compactness and low cost, and 3) a minimal number of major components. Circuit operation, steady-state analysis and various design parameters of the proposed converter are explained in details. In order to prove the performance of the theoretical analysis, a laboratory prototype is also implemented. The peak voltage gain and the maximum efficiency obtained are 11.9 and 94.6% respectively with very low input current ripple and output voltage ripple generated.

Item Type: Article
Funders: Higher Institution Centre of Excellence (HICoE) and UM Power Energy Dedicated Advanced Centre (UMPEDAC), University of Malaya, research grant under Ministry of Higher Education, Malaysia (Project: UM.0000067/HME.OM, UMPEDAC-2016) and (UM.0000343/HRU.OP. RU 002-2017), Postgraduate Research Grant (PPP), University of Malaya (PG252-2016A)
Uncontrolled Keywords: Article; controlled study; dc dc converter; electric capacitance; electric potential; feasibility study; limit of quantitation; photovoltaic application; renewable energy; simulation; steady state; theoretical model
Subjects: R Medicine
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Dentistry
Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 28 Jan 2019 03:04
Last Modified: 28 Jan 2019 03:04
URI: http://eprints.um.edu.my/id/eprint/20184

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