Investigation and Mitigation of Common-mode Voltage in Four-level NPC Converters Modulated by Redundant Level Modulation

Jun Wang; Wei Xu; Xibo Yuan; Lihong Xie

Investigation and Mitigation of Common-mode Voltage in Four-level NPC Converters Modulated by Redundant Level Modulation

Jun Wang^*, Wei Xu, Xibo Yuan, Lihong Xie

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

5 Citations (Scopus)

71 Downloads (Pure)

Abstract

Redundant level modulation (RLM) has emerged as a powerful modulation-based voltage balancing method for a range of multilevel converters. For four-level neutral point clamped (4L-NPC) topologies, utilizing redundant voltage levels is the mandatory solution in principle to enable the single-end 4L-NPC converters to keep a voltage balance under all operating conditions, without requiring auxiliary circuits. However, the side effects of RLM caused by the extra switching actions have not been fully studied, with the common-mode voltage in particular. Hence, this work investigates the worsened common-mode voltage problem induced by RLM through theoretical analysis and simulations, followed by a simple carrier-based mitigation method that is verified in experiments.

Original language	English
Title of host publication	2022 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Number of pages	9
ISBN (Electronic)	9789075815399
ISBN (Print)	9781665487009
Publication status	Published - 17 Oct 2022
Event	24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe) - Hanover, Germany Duration: 5 Sept 2022 → 9 Sept 2022

Conference

Conference	24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)
Abbreviated title	EPE'22 ECCE Europe
Country/Territory	Germany
City	Hanover
Period	5/09/22 → 9/09/22

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5 Citations
1 Article (Academic Journal)

Carrier-based Closed-loop DC-link Voltage Balancing Algorithm for Four Level NPC Converters based on Redundant Level Modulation
Wang, J., Yuan, X. & Jin, B., 24 Nov 2020, (E-pub ahead of print) In: IEEE Transactions on Industrial Electronics.
Research output: Contribution to journal › Article (Academic Journal) › peer-review

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38 Citations (Scopus)

255 Downloads (Pure)

Cite this

@inproceedings{7bff3ae6b18e4b7db31c3de8639aeab1,

title = "Investigation and Mitigation of Common-mode Voltage in Four-level NPC Converters Modulated by Redundant Level Modulation",

abstract = "Redundant level modulation (RLM) has emerged as a powerful modulation-based voltage balancing method for a range of multilevel converters. For four-level neutral point clamped (4L-NPC) topologies, utilizing redundant voltage levels is the mandatory solution in principle to enable the single-end 4L-NPC converters to keep a voltage balance under all operating conditions, without requiring auxiliary circuits. However, the side effects of RLM caused by the extra switching actions have not been fully studied, with the common-mode voltage in particular. Hence, this work investigates the worsened common-mode voltage problem induced by RLM through theoretical analysis and simulations, followed by a simple carrier-based mitigation method that is verified in experiments.",

author = "Jun Wang and Wei Xu and Xibo Yuan and Lihong Xie",

year = "2022",

month = oct,

day = "17",

language = "English",

isbn = "9781665487009",

booktitle = "2022 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

note = "24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe), EPE'22 ECCE Europe ; Conference date: 05-09-2022 Through 09-09-2022",

}

Wang, J , Xu, W, Yuan, X & Xie, L 2022, Investigation and Mitigation of Common-mode Voltage in Four-level NPC Converters Modulated by Redundant Level Modulation. in 2022 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe). Institute of Electrical and Electronics Engineers (IEEE), 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe), Hanover, Germany, 5/09/22. <https://ieeexplore.ieee.org/document/9907143>

Investigation and Mitigation of Common-mode Voltage in Four-level NPC Converters Modulated by Redundant Level Modulation. / Wang, Jun ; Xu, Wei; Yuan, Xibo et al.
2022 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe). Institute of Electrical and Electronics Engineers (IEEE), 2022.

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Investigation and Mitigation of Common-mode Voltage in Four-level NPC Converters Modulated by Redundant Level Modulation

AU - Wang, Jun

AU - Xu, Wei

AU - Yuan, Xibo

AU - Xie, Lihong

PY - 2022/10/17

Y1 - 2022/10/17

N2 - Redundant level modulation (RLM) has emerged as a powerful modulation-based voltage balancing method for a range of multilevel converters. For four-level neutral point clamped (4L-NPC) topologies, utilizing redundant voltage levels is the mandatory solution in principle to enable the single-end 4L-NPC converters to keep a voltage balance under all operating conditions, without requiring auxiliary circuits. However, the side effects of RLM caused by the extra switching actions have not been fully studied, with the common-mode voltage in particular. Hence, this work investigates the worsened common-mode voltage problem induced by RLM through theoretical analysis and simulations, followed by a simple carrier-based mitigation method that is verified in experiments.

AB - Redundant level modulation (RLM) has emerged as a powerful modulation-based voltage balancing method for a range of multilevel converters. For four-level neutral point clamped (4L-NPC) topologies, utilizing redundant voltage levels is the mandatory solution in principle to enable the single-end 4L-NPC converters to keep a voltage balance under all operating conditions, without requiring auxiliary circuits. However, the side effects of RLM caused by the extra switching actions have not been fully studied, with the common-mode voltage in particular. Hence, this work investigates the worsened common-mode voltage problem induced by RLM through theoretical analysis and simulations, followed by a simple carrier-based mitigation method that is verified in experiments.

M3 - Conference Contribution (Conference Proceeding)

SN - 9781665487009

BT - 2022 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 24th European Conference on Power Electronics and Applications (EPE'22 ECCE Europe)

Y2 - 5 September 2022 through 9 September 2022

ER -

Investigation and Mitigation of Common-mode Voltage in Four-level NPC Converters Modulated by Redundant Level Modulation

Abstract

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Research output

Carrier-based Closed-loop DC-link Voltage Balancing Algorithm for Four Level NPC Converters based on Redundant Level Modulation

Cite this