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Dual-T-type seven-level boost active-neutral-point-clamped inverter

Dual-T-type seven-level boost active-neutral-point-clamped inverter
Dual-T-type seven-level boost active-neutral-point-clamped inverter

The conventional three-level active-neutral-point-clamped (ANPC) inverter requires high dc-link voltage at least twice the peak of ac output. To reduce the dc-link voltage, a recent topology that enhanced the voltage gain from half to unity has been presented. In this letter, an alternative ANPC topology is established by using two T-type inverters. Two floating capacitors with self-voltage balancing capability are integrated to achieve a voltage-boosting gain of 1.5. In addition, the proposed topology is capable of generating seven voltage levels. Its operation is validated through circuit analysis followed by experimental results of a prototype.

Boost ANPC, Multilevel inverter, Seven-level, Voltage-boosting
0885-8993
6031-6035
Lee, Sze Sing
47f36964-db27-4f5e-a4d3-4b0ba78ce29e
Lee, Kyo Beum
eed8c5c3-ed62-431d-8523-8c7b6411d159
Lee, Sze Sing
47f36964-db27-4f5e-a4d3-4b0ba78ce29e
Lee, Kyo Beum
eed8c5c3-ed62-431d-8523-8c7b6411d159

Lee, Sze Sing and Lee, Kyo Beum (2019) Dual-T-type seven-level boost active-neutral-point-clamped inverter. IEEE Transactions on Power Electronics, 34 (7), 6031-6035, [8604060]. (doi:10.1109/TPEL.2019.2891248).

Record type: Article

Abstract

The conventional three-level active-neutral-point-clamped (ANPC) inverter requires high dc-link voltage at least twice the peak of ac output. To reduce the dc-link voltage, a recent topology that enhanced the voltage gain from half to unity has been presented. In this letter, an alternative ANPC topology is established by using two T-type inverters. Two floating capacitors with self-voltage balancing capability are integrated to achieve a voltage-boosting gain of 1.5. In addition, the proposed topology is capable of generating seven voltage levels. Its operation is validated through circuit analysis followed by experimental results of a prototype.

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More information

e-pub ahead of print date: 7 January 2019
Published date: 1 July 2019
Keywords: Boost ANPC, Multilevel inverter, Seven-level, Voltage-boosting

Identifiers

Local EPrints ID: 434689
URI: http://eprints.soton.ac.uk/id/eprint/434689
ISSN: 0885-8993
PURE UUID: f048651e-8837-4be6-a1f6-38740e119b3d
ORCID for Sze Sing Lee: ORCID iD orcid.org/0000-0003-2455-5783

Catalogue record

Date deposited: 04 Oct 2019 16:30
Last modified: 14 Sep 2021 20:19

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