An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters

For a modular multilevel converter (MMC) operating in the medium-voltage range, carrier-based pulsewidth modulation (PWM) methods are good options for modulating the converter, as harmonic contents of the phase voltage/current can be centered around the carrier frequency and/or its multiples. Howeve...

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Autores: Yin, Jiapeng, Dai, NingYi, Vázquez Pérez, Sergio, Márquez Alcaide, Abraham, León Galván, José Ignacio, Pérez, Marcelo A.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2024
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/173888
Acceso en línea:https://hdl.handle.net/11441/173888
https://doi.org/10.1109/TPEL.2023.3321759
Access Level:acceso abierto
Palabra clave:Harmonic analysis
modular multilevel converters (MMCs)
pulsewidth modulation (PWM)
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spelling An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel ConvertersYin, JiapengDai, NingYiVázquez Pérez, SergioMárquez Alcaide, AbrahamLeón Galván, José IgnacioPérez, Marcelo A.Harmonic analysismodular multilevel converters (MMCs)pulsewidth modulation (PWM)For a modular multilevel converter (MMC) operating in the medium-voltage range, carrier-based pulsewidth modulation (PWM) methods are good options for modulating the converter, as harmonic contents of the phase voltage/current can be centered around the carrier frequency and/or its multiples. However, in the relevant literature, arm voltage references are mostly normalized by the submodule (SM) capacitor voltage reference, leading to the so-called direct modulation, while the indirect modulation considering the capacitor voltage ripples receives much less attention. This article investigates the indirect modulation of MMCs, focusing on a specific PWM method where only two SMs per phase operate in PWM mode in each control period. It is found that the direct PWM (DiPWM) generates phase voltages/currents that contain high-amplitude low-order harmonics, while the indirect PWM (IndiPWM) presents well-suppressed low-order harmonics but significant distortions around the carrier frequency. The cause of the above problem of the IndiPWM is revealed theoretically through Fourier analysis, and a solution with simple implementation is developed by rearranging the switching pulses of the PWM-mode SMs. Both simulations and experiments are carried out. The results show that the proposed method combines the advantages of both DiPWM and IndiPWM, achieving low harmonic distortions simultaneously in the low frequency and around the carrier frequency.Institute of Electrical and Electronics EngineersIngeniería ElectrónicaTIC109: Tecnología2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/173888https://doi.org/10.1109/TPEL.2023.3321759reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésIEEE Transactions on Power Electronics, 39 (1), 733-743.https://ieeexplore.ieee.org/document/10269751info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1738882026-06-17T12:51:07Z
dc.title.none.fl_str_mv An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters
title An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters
spellingShingle An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters
Yin, Jiapeng
Harmonic analysis
modular multilevel converters (MMCs)
pulsewidth modulation (PWM)
title_short An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters
title_full An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters
title_fullStr An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters
title_full_unstemmed An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters
title_sort An Improved Indirect Pulsewidth Modulation Technique for Modular Multilevel Converters
dc.creator.none.fl_str_mv Yin, Jiapeng
Dai, NingYi
Vázquez Pérez, Sergio
Márquez Alcaide, Abraham
León Galván, José Ignacio
Pérez, Marcelo A.
author Yin, Jiapeng
author_facet Yin, Jiapeng
Dai, NingYi
Vázquez Pérez, Sergio
Márquez Alcaide, Abraham
León Galván, José Ignacio
Pérez, Marcelo A.
author_role author
author2 Dai, NingYi
Vázquez Pérez, Sergio
Márquez Alcaide, Abraham
León Galván, José Ignacio
Pérez, Marcelo A.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ingeniería Electrónica
TIC109: Tecnología
dc.subject.none.fl_str_mv Harmonic analysis
modular multilevel converters (MMCs)
pulsewidth modulation (PWM)
topic Harmonic analysis
modular multilevel converters (MMCs)
pulsewidth modulation (PWM)
description For a modular multilevel converter (MMC) operating in the medium-voltage range, carrier-based pulsewidth modulation (PWM) methods are good options for modulating the converter, as harmonic contents of the phase voltage/current can be centered around the carrier frequency and/or its multiples. However, in the relevant literature, arm voltage references are mostly normalized by the submodule (SM) capacitor voltage reference, leading to the so-called direct modulation, while the indirect modulation considering the capacitor voltage ripples receives much less attention. This article investigates the indirect modulation of MMCs, focusing on a specific PWM method where only two SMs per phase operate in PWM mode in each control period. It is found that the direct PWM (DiPWM) generates phase voltages/currents that contain high-amplitude low-order harmonics, while the indirect PWM (IndiPWM) presents well-suppressed low-order harmonics but significant distortions around the carrier frequency. The cause of the above problem of the IndiPWM is revealed theoretically through Fourier analysis, and a solution with simple implementation is developed by rearranging the switching pulses of the PWM-mode SMs. Both simulations and experiments are carried out. The results show that the proposed method combines the advantages of both DiPWM and IndiPWM, achieving low harmonic distortions simultaneously in the low frequency and around the carrier frequency.
publishDate 2024
dc.date.none.fl_str_mv 2024
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/11441/173888
https://doi.org/10.1109/TPEL.2023.3321759
url https://hdl.handle.net/11441/173888
https://doi.org/10.1109/TPEL.2023.3321759
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv IEEE Transactions on Power Electronics, 39 (1), 733-743.
https://ieeexplore.ieee.org/document/10269751
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 Institute of Electrical and Electronics Engineers
publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers
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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score 15,81155

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