Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters

Modular multilevel converters have become the prominent topology for medium- and high-voltage applications. The performance of these converters highly depends on the accuracy of the used modulation approach, for which the capacitor voltage of submodules (SM) are usually assumed to be equal. This art...

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Autores: Montero Robina, Pablo, Márquez Alcaide, Abraham, Dahidah, Mohamed, Vázquez Pérez, Sergio, León Galván, José Ignacio, Konstantinou, Georgios, García Franquelo, Leopoldo
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/137205
Acceso en línea:https://hdl.handle.net/11441/137205
https://doi.org/10.1109/TPEL.2021.3104984
Access Level:acceso abierto
Palabra clave:Capacitor voltage balancing
Circulating current
Feedforward modulation
Modular multilevel converters (MMC)
Switching–saving algorithm
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spelling Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel ConvertersMontero Robina, PabloMárquez Alcaide, AbrahamDahidah, MohamedVázquez Pérez, SergioLeón Galván, José IgnacioKonstantinou, GeorgiosGarcía Franquelo, LeopoldoCapacitor voltage balancingCirculating currentFeedforward modulationModular multilevel converters (MMC)Switching–saving algorithmModular multilevel converters have become the prominent topology for medium- and high-voltage applications. The performance of these converters highly depends on the accuracy of the used modulation approach, for which the capacitor voltage of submodules (SM) are usually assumed to be equal. This article exhibits that ignoring the capacitor voltage differences among SMs adversely affects the system performance. This becomes more obvious the larger the capacitor voltage differences are. Hence, this article proposes a more accurate feedforward modulation approach that takes into account either the instantaneous capacitor voltage value and the real output voltage in the modulation stage. As a result, in applications where larger SM voltage differences are expected, the current distortion and control performance are improved. Particularly, switching–saving approaches benefit from this method as it enables their operation with reduced switching losses without the downsides of increased distortion due to capacitor voltage differences. The proposed approach is analyzed and compared with the nearest-level modulation and with the level-shift PWM. Simulations and experimental validation are presented to confirm the effectiveness of the proposed technique.Ministerio de Ciencia, Innovación y Universidades PDI2019-105890RJ-100 y PID2019-109071RB-I00Comisión Europea H2020-821 381Junta de Andalucia P18-RT-1340IEEEIngeniería Electrónica2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/137205https://doi.org/10.1109/TPEL.2021.3104984reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésIEEE Transactions on Power Electronics, 37 (2), 1700-1710.PDI2019-105890RJ-100PID2019-109071RB-I00H2020-821 381P18-RT-1340https://ieeexplore.ieee.org/document/9514406info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1372052026-06-17T12:51:07Z
dc.title.none.fl_str_mv Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters
title Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters
spellingShingle Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters
Montero Robina, Pablo
Capacitor voltage balancing
Circulating current
Feedforward modulation
Modular multilevel converters (MMC)
Switching–saving algorithm
title_short Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters
title_full Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters
title_fullStr Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters
title_full_unstemmed Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters
title_sort Feedforward Modulation Technique for More Accurate Operation of Modular Multilevel Converters
dc.creator.none.fl_str_mv Montero Robina, Pablo
Márquez Alcaide, Abraham
Dahidah, Mohamed
Vázquez Pérez, Sergio
León Galván, José Ignacio
Konstantinou, Georgios
García Franquelo, Leopoldo
author Montero Robina, Pablo
author_facet Montero Robina, Pablo
Márquez Alcaide, Abraham
Dahidah, Mohamed
Vázquez Pérez, Sergio
León Galván, José Ignacio
Konstantinou, Georgios
García Franquelo, Leopoldo
author_role author
author2 Márquez Alcaide, Abraham
Dahidah, Mohamed
Vázquez Pérez, Sergio
León Galván, José Ignacio
Konstantinou, Georgios
García Franquelo, Leopoldo
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ingeniería Electrónica
dc.subject.none.fl_str_mv Capacitor voltage balancing
Circulating current
Feedforward modulation
Modular multilevel converters (MMC)
Switching–saving algorithm
topic Capacitor voltage balancing
Circulating current
Feedforward modulation
Modular multilevel converters (MMC)
Switching–saving algorithm
description Modular multilevel converters have become the prominent topology for medium- and high-voltage applications. The performance of these converters highly depends on the accuracy of the used modulation approach, for which the capacitor voltage of submodules (SM) are usually assumed to be equal. This article exhibits that ignoring the capacitor voltage differences among SMs adversely affects the system performance. This becomes more obvious the larger the capacitor voltage differences are. Hence, this article proposes a more accurate feedforward modulation approach that takes into account either the instantaneous capacitor voltage value and the real output voltage in the modulation stage. As a result, in applications where larger SM voltage differences are expected, the current distortion and control performance are improved. Particularly, switching–saving approaches benefit from this method as it enables their operation with reduced switching losses without the downsides of increased distortion due to capacitor voltage differences. The proposed approach is analyzed and compared with the nearest-level modulation and with the level-shift PWM. Simulations and experimental validation are presented to confirm the effectiveness of the proposed technique.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/137205
https://doi.org/10.1109/TPEL.2021.3104984
url https://hdl.handle.net/11441/137205
https://doi.org/10.1109/TPEL.2021.3104984
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv IEEE Transactions on Power Electronics, 37 (2), 1700-1710.
PDI2019-105890RJ-100
PID2019-109071RB-I00
H2020-821 381
P18-RT-1340
https://ieeexplore.ieee.org/document/9514406
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv IEEE
publisher.none.fl_str_mv IEEE
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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