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New family of boost switched-capacitor seven-level inverters (BSC7LI)

New family of boost switched-capacitor seven-level inverters (BSC7LI)
New family of boost switched-capacitor seven-level inverters (BSC7LI)

This paper proposes a new family of multilevel inverter topology that is able to generate seven voltage levels by utilizing one or two floating capacitors and 10 power switches. This novel boost switched-capacitor seven-level inverter possesses voltage boosting capability with an achievable maximum voltage level 1.5 times the input direct current (dc) voltage. The generation of higher output voltage does not incur high-voltage stress on any power switch in this topology, as the peak inverse voltages of all power switches do not exceed the input source voltage. In addition, capacitor voltage balancing is not essential since the floating capacitors are effectively balanced during the charging and discharging processes. Furthermore, the proposed topology eliminates the need for multiple isolated dc sources, and a single dc source is sufficient in both its single-phase and three-phase topologies. The operating principle and steady-state analysis of the proposed topology are elaborated. Experimental results from a single-phase prototype are then presented to verify the validity of the proposed topology.

Boost inverter, inverter topology, multilevel inverter (MLI), switched-capacitor
0885-8993
10471-10479
Lee, Sze Sing
47f36964-db27-4f5e-a4d3-4b0ba78ce29e
Bak, Yeongsu
b9cdae80-e6fb-4f85-a3a1-8c9021ba4649
Kim, Seok Min
5b46f38e-f770-4f01-bdd1-52f1f1f83e86
Joseph, Anto
a658f827-ae5f-4b63-8925-99e37a07a464
Lee, Kyo Beum
eed8c5c3-ed62-431d-8523-8c7b6411d159
Lee, Sze Sing
47f36964-db27-4f5e-a4d3-4b0ba78ce29e
Bak, Yeongsu
b9cdae80-e6fb-4f85-a3a1-8c9021ba4649
Kim, Seok Min
5b46f38e-f770-4f01-bdd1-52f1f1f83e86
Joseph, Anto
a658f827-ae5f-4b63-8925-99e37a07a464
Lee, Kyo Beum
eed8c5c3-ed62-431d-8523-8c7b6411d159

Lee, Sze Sing, Bak, Yeongsu, Kim, Seok Min, Joseph, Anto and Lee, Kyo Beum (2019) New family of boost switched-capacitor seven-level inverters (BSC7LI). IEEE Transactions on Power Electronics, 34 (11), 10471-10479, [8630676]. (doi:10.1109/TPEL.2019.2896606).

Record type: Article

Abstract

This paper proposes a new family of multilevel inverter topology that is able to generate seven voltage levels by utilizing one or two floating capacitors and 10 power switches. This novel boost switched-capacitor seven-level inverter possesses voltage boosting capability with an achievable maximum voltage level 1.5 times the input direct current (dc) voltage. The generation of higher output voltage does not incur high-voltage stress on any power switch in this topology, as the peak inverse voltages of all power switches do not exceed the input source voltage. In addition, capacitor voltage balancing is not essential since the floating capacitors are effectively balanced during the charging and discharging processes. Furthermore, the proposed topology eliminates the need for multiple isolated dc sources, and a single dc source is sufficient in both its single-phase and three-phase topologies. The operating principle and steady-state analysis of the proposed topology are elaborated. Experimental results from a single-phase prototype are then presented to verify the validity of the proposed topology.

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More information

e-pub ahead of print date: 31 January 2019
Published date: November 2019
Keywords: Boost inverter, inverter topology, multilevel inverter (MLI), switched-capacitor

Identifiers

Local EPrints ID: 434657
URI: http://eprints.soton.ac.uk/id/eprint/434657
ISSN: 0885-8993
PURE UUID: ca91b899-adb3-4597-a0ea-525d2546d856
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 18:52

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Contributors

Author: Sze Sing Lee ORCID iD
Author: Yeongsu Bak
Author: Seok Min Kim
Author: Anto Joseph
Author: Kyo Beum Lee

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