Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage

Sebastian Neira; Zoe Blatsi; Paul Judge; Michael Merlin; Javier Pereda

doi:10.1109/ECCE-Asia49820.2021.9479410

Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage

Sebastian Neira, Zoe Blatsi, Paul Judge, Michael Merlin, Javier Pereda

School of Engineering

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

Abstract / Description of output

This paper investigates the Modular Multilevel Converter topology, enhanced with an extra branch featuring Energy Storage units, in order to provide ancillary or market services and serve as an energy buffer between the dc and ac sides. The new branch is installed in parallel with the arm inductors, and it includes a partially rated dc-ac converter which enables power exchange between the ES and the arms of the MMC in the form of a higher harmonic current. The topology adds new functionalities to the MMC substation without affecting the existing configuration; the ES branches are connected to the MMC in the existing busbars. The solution enables an addition up to 0.4 pu power from the ES for a typical rated high voltage MMC. A study of the main operational features is presented, showing that parameters as the circulating current magnitude and frequency can be adjusted to optimise the operation of the overall system in terms of efficiency and current/voltage ratings.

Original language	English
Title of host publication	Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021
Publisher	Institute of Electrical and Electronics Engineers
Pages	676-681
Number of pages	6
ISBN (Electronic)	9781728163444
DOIs	https://doi.org/10.1109/ECCE-Asia49820.2021.9479410
Publication status	Published - 13 Jul 2021
Event	12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021 - Virtual, Singapore, Singapore Duration: 24 May 2021 → 27 May 2021

Publication series

Name	Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021

Conference

Conference	12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021
Country/Territory	Singapore
City	Virtual, Singapore
Period	24/05/21 → 27/05/21

Keywords / Materials (for Non-textual outputs)

MMC
Multilevel BESS
Partial power rating

Access to Document

10.1109/ECCE-Asia49820.2021.9479410

Cite this

Neira, S., Blatsi, Z., Judge, P., Merlin, M., & Pereda, J. (2021). Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage. In Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021 (pp. 676-681). Article 9479410 (Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ECCE-Asia49820.2021.9479410

Neira, Sebastian ; Blatsi, Zoe ; Judge, Paul et al. / Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage. Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021. Institute of Electrical and Electronics Engineers, 2021. pp. 676-681 (Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021).

@inproceedings{f617c4fc7dc74551815dc90609538538,

title = "Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage",

abstract = "This paper investigates the Modular Multilevel Converter topology, enhanced with an extra branch featuring Energy Storage units, in order to provide ancillary or market services and serve as an energy buffer between the dc and ac sides. The new branch is installed in parallel with the arm inductors, and it includes a partially rated dc-ac converter which enables power exchange between the ES and the arms of the MMC in the form of a higher harmonic current. The topology adds new functionalities to the MMC substation without affecting the existing configuration; the ES branches are connected to the MMC in the existing busbars. The solution enables an addition up to 0.4 pu power from the ES for a typical rated high voltage MMC. A study of the main operational features is presented, showing that parameters as the circulating current magnitude and frequency can be adjusted to optimise the operation of the overall system in terms of efficiency and current/voltage ratings.",

keywords = "MMC, Multilevel BESS, Partial power rating",

author = "Sebastian Neira and Zoe Blatsi and Paul Judge and Michael Merlin and Javier Pereda",

note = "Funding Information: The authors gratefully acknowledge the financial support provided by ANID/FONDEF/ID20i10267, by ANID/FONDAP/15110019 (SERC Chile), by ANID/PIA/ACT192013, and the UC Energy Research Center of Pontificia Universidad Cat{\'o}lica de Chile. Publisher Copyright: {\textcopyright} 2021 IEEE.; 12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021 ; Conference date: 24-05-2021 Through 27-05-2021",

year = "2021",

month = jul,

day = "13",

doi = "10.1109/ECCE-Asia49820.2021.9479410",

language = "English",

series = "Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021",

publisher = "Institute of Electrical and Electronics Engineers",

pages = "676--681",

booktitle = "Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021",

address = "United States",

}

Neira, S, Blatsi, Z, Judge, P , Merlin, M & Pereda, J 2021, Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage. in Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021., 9479410, Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021, Institute of Electrical and Electronics Engineers, pp. 676-681, 12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021, Virtual, Singapore, Singapore, 24/05/21. https://doi.org/10.1109/ECCE-Asia49820.2021.9479410

Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage. / Neira, Sebastian; Blatsi, Zoe; Judge, Paul et al.
Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021. Institute of Electrical and Electronics Engineers, 2021. p. 676-681 9479410 (Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021).

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

TY - GEN

T1 - Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage

AU - Neira, Sebastian

AU - Blatsi, Zoe

AU - Judge, Paul

AU - Merlin, Michael

AU - Pereda, Javier

N1 - Funding Information: The authors gratefully acknowledge the financial support provided by ANID/FONDEF/ID20i10267, by ANID/FONDAP/15110019 (SERC Chile), by ANID/PIA/ACT192013, and the UC Energy Research Center of Pontificia Universidad Católica de Chile. Publisher Copyright: © 2021 IEEE.

PY - 2021/7/13

Y1 - 2021/7/13

N2 - This paper investigates the Modular Multilevel Converter topology, enhanced with an extra branch featuring Energy Storage units, in order to provide ancillary or market services and serve as an energy buffer between the dc and ac sides. The new branch is installed in parallel with the arm inductors, and it includes a partially rated dc-ac converter which enables power exchange between the ES and the arms of the MMC in the form of a higher harmonic current. The topology adds new functionalities to the MMC substation without affecting the existing configuration; the ES branches are connected to the MMC in the existing busbars. The solution enables an addition up to 0.4 pu power from the ES for a typical rated high voltage MMC. A study of the main operational features is presented, showing that parameters as the circulating current magnitude and frequency can be adjusted to optimise the operation of the overall system in terms of efficiency and current/voltage ratings.

AB - This paper investigates the Modular Multilevel Converter topology, enhanced with an extra branch featuring Energy Storage units, in order to provide ancillary or market services and serve as an energy buffer between the dc and ac sides. The new branch is installed in parallel with the arm inductors, and it includes a partially rated dc-ac converter which enables power exchange between the ES and the arms of the MMC in the form of a higher harmonic current. The topology adds new functionalities to the MMC substation without affecting the existing configuration; the ES branches are connected to the MMC in the existing busbars. The solution enables an addition up to 0.4 pu power from the ES for a typical rated high voltage MMC. A study of the main operational features is presented, showing that parameters as the circulating current magnitude and frequency can be adjusted to optimise the operation of the overall system in terms of efficiency and current/voltage ratings.

KW - MMC

KW - Multilevel BESS

KW - Partial power rating

UR - http://www.scopus.com/inward/record.url?scp=85114207920&partnerID=8YFLogxK

U2 - 10.1109/ECCE-Asia49820.2021.9479410

DO - 10.1109/ECCE-Asia49820.2021.9479410

M3 - Conference contribution

AN - SCOPUS:85114207920

T3 - Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021

SP - 676

EP - 681

BT - Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021

PB - Institute of Electrical and Electronics Engineers

T2 - 12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021

Y2 - 24 May 2021 through 27 May 2021

ER -

Neira S, Blatsi Z, Judge P , Merlin M, Pereda J. Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage. In Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021. Institute of Electrical and Electronics Engineers. 2021. p. 676-681. 9479410. (Proceedings of the Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021). doi: 10.1109/ECCE-Asia49820.2021.9479410

Modular Multilevel Converter with Inductor Parallel Branch Providing Integrated Partially Rated Energy Storage

Abstract / Description of output

Publication series

Conference

Keywords / Materials (for Non-textual outputs)

Access to Document

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Modular Multilevel Converter with Parallel Branch Providing Integrated Partially Rated Energy Storage

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