A new modular three-phase inverter based on SEPIC-CUK combination converter for photovoltaic applications

S. Alotaibi, A. Darwish, X. Ma, B. W. Williams

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

A new modular dc/ac inverter based on a dual-winding isolated SEPIC/Cuk converter for medium and high power Photovoltaic (PV) applications is introduced. In this system, several current-source submodules (SMs) are connected in series to allow for additional voltage boosting. Each SM is designed as a combination of SEPIC/CUK converter to offer a flexible output range and continuous currents with small ripple at input and output sides. Furthermore, the SMs structure can generate different output voltage polarities. The main purpose of employing small-size high-frequency transformers are to (1) provide galvanic isolation, (2) eliminate PV grounding problems, (3) achieve minimum electromagnetic interference (EMI). The paper presents a description of the proposed topology and investigate its reliability performance in a PV grid-tied system using MATLAB simulations. An experimental prototype has been used and controlled by TMS32028335 DSP, as a proof of concept.

Original languageEnglish
Title of host publication9th Renewable Power Generation Conference, RPG Dublin Online 2021
Place of PublicationNew York, N.Y.
PublisherInstitution of Engineering and Technology
Pages259-264
Number of pages6
EditionCP783
ISBN (Electronic)9781839534300, 9781839534300, 9781839535048, 9781839536199
DOIs
Publication statusPublished - 22 Oct 2021
Event9th Renewable Power Generation Conference, RPG Dublin Online 2021 - Virtual, Online
Duration: 1 Mar 20212 Mar 2021

Publication series

NameIET Conference Publications
NumberCP783
Volume2021

Conference

Conference9th Renewable Power Generation Conference, RPG Dublin Online 2021
CityVirtual, Online
Period1/03/212/03/21

Keywords

  • cuk converter
  • modular DC/AC inverter
  • photovoltaic applications
  • SEPIC converter

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