A controller for practical stability of capacitor voltages in a five-level diode-clamped converter

The balancing of the dc-link capacitor voltages represents the main technical challenge in multilevel diode-clamped converters. In particular, when the number of capacitors is greater than two, these power conversion systems must be actively controlled to achieve a correct voltage sharing. Focusing...

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Detalles Bibliográficos
Autores: Umbría Jiménez, Francisco, Gordillo Álvarez, Francisco, Salas Gómez, Francisco
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2016
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/47621
Acceso en línea:http://hdl.handle.net/11441/47621
https://doi.org/10.1016/j.ejcon.2015.10.004
Access Level:acceso abierto
Palabra clave:Multilevel power converter
Diode-clamped converter (DCC)
Practical stability
Dc-link capacitor voltage balancing
Stability analysis
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spelling A controller for practical stability of capacitor voltages in a five-level diode-clamped converterUmbría Jiménez, FranciscoGordillo Álvarez, FranciscoSalas Gómez, FranciscoMultilevel power converterDiode-clamped converter (DCC)Practical stabilityDc-link capacitor voltage balancingStability analysisThe balancing of the dc-link capacitor voltages represents the main technical challenge in multilevel diode-clamped converters. In particular, when the number of capacitors is greater than two, these power conversion systems must be actively controlled to achieve a correct voltage sharing. Focusing on the five-level diode-clamped converter topology, this paper deals with the voltage imbalance phenomenon from a control point of view. For that purpose, the voltage balancing objective is addressed as a problem of ensuring the practical stability of a nonlinear system under the presence of external disturbances. Considering this approach, a novel control method is proposed to regulate the outputs of the system. It is based on several steps, which should be carried out during the controller design stage, that lead to define a discrete-time controller with sampling frequency corresponding to the triple of the ac-source frequency. Finally, the performance of the proposed controller is analyzed under varying operating conditions to demonstrate the capability and viability of the controller to attain the control goals.Unión EuropeaMinisterio de Economía y CompetitividadJunta de AndalucíaElsevierIngeniería de Sistemas y AutomáticaTEP102: Ingeniería Automática y Robótica2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/11441/47621https://doi.org/10.1016/j.ejcon.2015.10.004reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésEuropean Journal of Control, 28, 56-68.info:eu-repo/grantAgreement/MINECO/DPI2009-09661/P07-TIC-02991http://dx.doi.org/10.1016/j.ejcon.2015.10.004info:eu-repo/semantics/openAccessoai:idus.us.es:11441/476212026-06-17T12:51:07Z
dc.title.none.fl_str_mv A controller for practical stability of capacitor voltages in a five-level diode-clamped converter
title A controller for practical stability of capacitor voltages in a five-level diode-clamped converter
spellingShingle A controller for practical stability of capacitor voltages in a five-level diode-clamped converter
Umbría Jiménez, Francisco
Multilevel power converter
Diode-clamped converter (DCC)
Practical stability
Dc-link capacitor voltage balancing
Stability analysis
title_short A controller for practical stability of capacitor voltages in a five-level diode-clamped converter
title_full A controller for practical stability of capacitor voltages in a five-level diode-clamped converter
title_fullStr A controller for practical stability of capacitor voltages in a five-level diode-clamped converter
title_full_unstemmed A controller for practical stability of capacitor voltages in a five-level diode-clamped converter
title_sort A controller for practical stability of capacitor voltages in a five-level diode-clamped converter
dc.creator.none.fl_str_mv Umbría Jiménez, Francisco
Gordillo Álvarez, Francisco
Salas Gómez, Francisco
author Umbría Jiménez, Francisco
author_facet Umbría Jiménez, Francisco
Gordillo Álvarez, Francisco
Salas Gómez, Francisco
author_role author
author2 Gordillo Álvarez, Francisco
Salas Gómez, Francisco
author2_role author
author
dc.contributor.none.fl_str_mv Ingeniería de Sistemas y Automática
TEP102: Ingeniería Automática y Robótica
dc.subject.none.fl_str_mv Multilevel power converter
Diode-clamped converter (DCC)
Practical stability
Dc-link capacitor voltage balancing
Stability analysis
topic Multilevel power converter
Diode-clamped converter (DCC)
Practical stability
Dc-link capacitor voltage balancing
Stability analysis
description The balancing of the dc-link capacitor voltages represents the main technical challenge in multilevel diode-clamped converters. In particular, when the number of capacitors is greater than two, these power conversion systems must be actively controlled to achieve a correct voltage sharing. Focusing on the five-level diode-clamped converter topology, this paper deals with the voltage imbalance phenomenon from a control point of view. For that purpose, the voltage balancing objective is addressed as a problem of ensuring the practical stability of a nonlinear system under the presence of external disturbances. Considering this approach, a novel control method is proposed to regulate the outputs of the system. It is based on several steps, which should be carried out during the controller design stage, that lead to define a discrete-time controller with sampling frequency corresponding to the triple of the ac-source frequency. Finally, the performance of the proposed controller is analyzed under varying operating conditions to demonstrate the capability and viability of the controller to attain the control goals.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11441/47621
https://doi.org/10.1016/j.ejcon.2015.10.004
url http://hdl.handle.net/11441/47621
https://doi.org/10.1016/j.ejcon.2015.10.004
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv European Journal of Control, 28, 56-68.
info:eu-repo/grantAgreement/MINECO/DPI2009-09661/
P07-TIC-02991
http://dx.doi.org/10.1016/j.ejcon.2015.10.004
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 Elsevier
publisher.none.fl_str_mv Elsevier
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 15.300719

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