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A novel multilevel DC-link three-phase T-type inverter

Efficiency; Semiconductor diodes; Switching; Topology; Experimental validations; Fundamental frequencies; Low power application; Minimizing the number of; Modulation techniques; Multilevel converter; Switching transitions; Unequal DC-link voltages; Electric inverters

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Main Authors: Alnamer S.S., Mekhilef S., Mokhlis H., Tan N.M.L.
Other Authors: 57195322292
Format: Article
Published: MDPI AG 2023
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spelling my.uniten.dspace-253652023-05-29T16:08:34Z A novel multilevel DC-link three-phase T-type inverter Alnamer S.S. Mekhilef S. Mokhlis H. Tan N.M.L. 57195322292 57928298500 8136874200 24537965000 Efficiency; Semiconductor diodes; Switching; Topology; Experimental validations; Fundamental frequencies; Low power application; Minimizing the number of; Modulation techniques; Multilevel converter; Switching transitions; Unequal DC-link voltages; Electric inverters This research proposes a four-level T-type inverter that is suitable for low-power applications. The presented topology outranks other types of inverters in terms of a smaller number of semiconductor devices, absence of passive components such as clamping diodes and flying capacitors, low switching and conduction losses, and high efficiency. The proposed topology is free from voltage deviation and unbalanced voltage occurrences that are present in other multilevel converters having clamping diodes or flying capacitors. The proposed inverter can extend to N levels using unequal dc-link voltage sources for medium-voltage application. The inverter employs the simple fundamental frequency staircase modulation technique. Moreover, this paper presents a current commutation strategy to prevent the occurrences of short circuit and minimizing the number of required switching devices and switching transitions, resulting in improving the efficiency of the inverter. This paper also analyses the theoretical converter losses showing lower switching and conduction losses when compared to existing four-level inverters. The experimental validation of the proposed inverter shows its operating feasibility and a low output voltage THD. � 2020 by the authors. Licensee MDPI, Basel, Switzerland. Final 2023-05-29T08:08:34Z 2023-05-29T08:08:34Z 2020 Article 10.3390/en13164186 2-s2.0-85090511587 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090511587&doi=10.3390%2fen13164186&partnerID=40&md5=03be587b99acecfdae58014f61fe5c1b https://irepository.uniten.edu.my/handle/123456789/25365 13 6 4186 All Open Access, Gold, Green MDPI AG Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Efficiency; Semiconductor diodes; Switching; Topology; Experimental validations; Fundamental frequencies; Low power application; Minimizing the number of; Modulation techniques; Multilevel converter; Switching transitions; Unequal DC-link voltages; Electric inverters
author2 57195322292
author_facet 57195322292
Alnamer S.S.
Mekhilef S.
Mokhlis H.
Tan N.M.L.
format Article
author Alnamer S.S.
Mekhilef S.
Mokhlis H.
Tan N.M.L.
spellingShingle Alnamer S.S.
Mekhilef S.
Mokhlis H.
Tan N.M.L.
A novel multilevel DC-link three-phase T-type inverter
author_sort Alnamer S.S.
title A novel multilevel DC-link three-phase T-type inverter
title_short A novel multilevel DC-link three-phase T-type inverter
title_full A novel multilevel DC-link three-phase T-type inverter
title_fullStr A novel multilevel DC-link three-phase T-type inverter
title_full_unstemmed A novel multilevel DC-link three-phase T-type inverter
title_sort novel multilevel dc-link three-phase t-type inverter
publisher MDPI AG
publishDate 2023
_version_ 1806427656267235328
score 13.214268

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