High voltage-gain full-bridge cascaded dc-dc converter for photovoltaic application
Document Type
Article
Publication Date
1-1-2018
Abstract
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.
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
Divisions
Dentistry,fac_eng
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)
Publication Title
PLoS ONE
Volume
13
Issue
11
Publisher
Public Library of Science