Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications

Esteban Concha; Sebastian Rivera; Apparao Dekka; F. Ricardo Lizana

doi:10.1109/CHILECON60335.2023.10418732

Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications

Esteban Concha, Sebastian Rivera, Apparao Dekka, F. Ricardo Lizana

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Modular multilevel series-parallel converters (MM-SPC) have become a suitable solution to provide higher operating voltages, fault tolerance operation, and reliability at a reduced cost, due to their ability to achieve a simpler internal voltage balance. Therefore, MMSPC is a promising solution for applications where the nominal operating conditions are high voltage levels on the DC side and high current ratings on the AC side of the system. To allow this operation, it is necessary to design the system with parallelization in each phase. Therefore, this article proposes a design that incorporates parallelization in each phases and analyzes the internal cross-circulating current generated due to parallelization. This current creates an unbalance and internal losses in the converter. In order to compensate for the cross-circulating current, two cases are compared: the first one with decoupled inductors in their phases, and the second one with coupled inductors. This way, a comparison is made to determine which case provides greater compensation of the circulating current, allowing for the delivery of a high current at the converter's output with the least possible imbalance and internal losses.

Original language	English
Title of host publication	ChileCon 2023 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350369533
DOIs	https://doi.org/10.1109/CHILECON60335.2023.10418732
State	Published - 2023
Externally published	Yes
Event	2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon 2023 - Hybrid, Valdivia, Chile Duration: 5 Dec 2023 → 7 Dec 2023

Publication series

Name	Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon
ISSN (Print)	2832-1529
ISSN (Electronic)	2832-1537

Conference

Conference	2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon 2023
Country/Territory	Chile
City	Hybrid, Valdivia
Period	5/12/23 → 7/12/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

coupled inductors
cross-circulating current
MMSPC

Access to Document

10.1109/CHILECON60335.2023.10418732

Cite this

Concha, E., Rivera, S., Dekka, A., & Ricardo Lizana, F. (2023). Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications. In ChileCon 2023 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CHILECON60335.2023.10418732

Concha, Esteban ; Rivera, Sebastian ; Dekka, Apparao et al. / Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications. ChileCon 2023 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies. Institute of Electrical and Electronics Engineers Inc., 2023. (Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon).

@inproceedings{c75f71ef3a5b4a1aba3d516ca9d38065,

title = "Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications",

abstract = "Modular multilevel series-parallel converters (MM-SPC) have become a suitable solution to provide higher operating voltages, fault tolerance operation, and reliability at a reduced cost, due to their ability to achieve a simpler internal voltage balance. Therefore, MMSPC is a promising solution for applications where the nominal operating conditions are high voltage levels on the DC side and high current ratings on the AC side of the system. To allow this operation, it is necessary to design the system with parallelization in each phase. Therefore, this article proposes a design that incorporates parallelization in each phases and analyzes the internal cross-circulating current generated due to parallelization. This current creates an unbalance and internal losses in the converter. In order to compensate for the cross-circulating current, two cases are compared: the first one with decoupled inductors in their phases, and the second one with coupled inductors. This way, a comparison is made to determine which case provides greater compensation of the circulating current, allowing for the delivery of a high current at the converter's output with the least possible imbalance and internal losses.",

keywords = "coupled inductors, cross-circulating current, MMSPC",

author = "Esteban Concha and Sebastian Rivera and Apparao Dekka and {Ricardo Lizana}, F.",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon 2023 ; Conference date: 05-12-2023 Through 07-12-2023",

year = "2023",

doi = "10.1109/CHILECON60335.2023.10418732",

language = "English",

series = "Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "ChileCon 2023 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies",

address = "United States",

}

Concha, E, Rivera, S, Dekka, A & Ricardo Lizana, F 2023, Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications. in ChileCon 2023 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies. Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon, Institute of Electrical and Electronics Engineers Inc., 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon 2023, Hybrid, Valdivia, Chile, 5/12/23. https://doi.org/10.1109/CHILECON60335.2023.10418732

Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications. / Concha, Esteban; Rivera, Sebastian; Dekka, Apparao et al.
ChileCon 2023 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies. Institute of Electrical and Electronics Engineers Inc., 2023. (Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications

AU - Concha, Esteban

AU - Rivera, Sebastian

AU - Dekka, Apparao

AU - Ricardo Lizana, F.

PY - 2023

Y1 - 2023

N2 - Modular multilevel series-parallel converters (MM-SPC) have become a suitable solution to provide higher operating voltages, fault tolerance operation, and reliability at a reduced cost, due to their ability to achieve a simpler internal voltage balance. Therefore, MMSPC is a promising solution for applications where the nominal operating conditions are high voltage levels on the DC side and high current ratings on the AC side of the system. To allow this operation, it is necessary to design the system with parallelization in each phase. Therefore, this article proposes a design that incorporates parallelization in each phases and analyzes the internal cross-circulating current generated due to parallelization. This current creates an unbalance and internal losses in the converter. In order to compensate for the cross-circulating current, two cases are compared: the first one with decoupled inductors in their phases, and the second one with coupled inductors. This way, a comparison is made to determine which case provides greater compensation of the circulating current, allowing for the delivery of a high current at the converter's output with the least possible imbalance and internal losses.

AB - Modular multilevel series-parallel converters (MM-SPC) have become a suitable solution to provide higher operating voltages, fault tolerance operation, and reliability at a reduced cost, due to their ability to achieve a simpler internal voltage balance. Therefore, MMSPC is a promising solution for applications where the nominal operating conditions are high voltage levels on the DC side and high current ratings on the AC side of the system. To allow this operation, it is necessary to design the system with parallelization in each phase. Therefore, this article proposes a design that incorporates parallelization in each phases and analyzes the internal cross-circulating current generated due to parallelization. This current creates an unbalance and internal losses in the converter. In order to compensate for the cross-circulating current, two cases are compared: the first one with decoupled inductors in their phases, and the second one with coupled inductors. This way, a comparison is made to determine which case provides greater compensation of the circulating current, allowing for the delivery of a high current at the converter's output with the least possible imbalance and internal losses.

KW - coupled inductors

KW - cross-circulating current

KW - MMSPC

UR - http://www.scopus.com/inward/record.url?scp=85189553753&partnerID=8YFLogxK

U2 - 10.1109/CHILECON60335.2023.10418732

DO - 10.1109/CHILECON60335.2023.10418732

M3 - Conference contribution

AN - SCOPUS:85189553753

T3 - Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon

BT - ChileCon 2023 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon 2023

Y2 - 5 December 2023 through 7 December 2023

ER -

Concha E, Rivera S, Dekka A, Ricardo Lizana F. Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications. In ChileCon 2023 - 2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies. Institute of Electrical and Electronics Engineers Inc. 2023. (Proceedings - IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies, ChileCon). doi: 10.1109/CHILECON60335.2023.10418732

Modular Multilevel Series-Parallel Converter with Parallel-Connected Phases and Coupled Inductors for High-Current Applications

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this