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A new family of multi-output DC-DC converter topologies to supply an asymmetrical four-level diode-clamped inverter

A. Boora, Arash, Zare, Firuz, & Ghosh, Arindam (2011) A new family of multi-output DC-DC converter topologies to supply an asymmetrical four-level diode-clamped inverter. COMPEL, 30(2), pp. 451-482.

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Abstract

Purpose

Multi-level diode-clamped inverters have the challenge of capacitor voltage balancing when the number of DC-link capacitors is three or more. On the other hand, asymmetrical DC-link voltage sources have been applied to increase the number of voltage levels without increasing the number of switches. The purpose of this paper is to show that an appropriate multi-output DC-DC converter can resolve the problem of capacitor voltage balancing and utilize the asymmetrical DC-link voltages advantages.

Design/methodology/approach

A family of multi-output DC-DC converters is presented in this paper. The application of these converters is to convert the output voltage of a photovoltaic (PV) panel to regulate DC-link voltages of an asymmetrical four-level diode-clamped inverter utilized for domestic applications. To verify the versatility of the presented topology, simulations have been directed for different situations and results are presented. Some related experiments have been developed to examine the capabilities of the proposed converters.

Findings

The three-output voltage-sharing converters presented in this paper have been mathematically analysed and proven to be appropriate to improve the quality of the residential application of PV by means of four-level asymmetrical diode-clamped inverter supplying highly resistive loads.

Originality/value

This paper shows that an appropriate multi-output DC-DC converter can resolve the problem of capacitor voltage balancing and utilize the asymmetrical DC-link voltages advantages and that there is a possibility of operation at high-modulation index despite reference voltage magnitude and power factor variations.

Impact and interest:

1 citations in Scopus
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0 citations in Web of Science®

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ID Code: 31626
Item Type: Journal Article
Additional URLs:
Keywords: DC-DC converters, Control, multi-level inverters
DOI: 10.1108/03321641111101023
ISSN: 0332-1649
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Industrial Electronics (090603)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Circuits and Systems (090601)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2011 Emerald Group Publishing Limited
Deposited On: 06 Apr 2010 11:10
Last Modified: 22 Oct 2013 13:57

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