Robust multisampled capacitor voltage active damping for grid-connected power converters

The derivative feedback of the capacitor voltage is one of the most extended active damping strategies, used to eliminate stability problems in grid-connected power converters with an LCL filter. This strategy is equivalent to the implementation of a virtual impedance in parallel with the filter cap...

Full description

Bibliographic Details
Authors: Samanes Pascual, Javier, Urtasun Erburu, Andoni, Gubía Villabona, Eugenio, Petri, Alberto
Format: article
Status:Versión aceptada para publicación
Publication Date:2019
Country:España
Institution:Universidad Pública de Navarra
Repository:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/31361
Online Access:https://hdl.handle.net/2454/31361
Access Level:Open access
Keyword:Active damping
Capacitor voltage derivative
Converter control
Grid connected power converter
LCL-filter
Multisampling
id ES_bfdc4440b9e8f1633913fa0e55eb14aa
oai_identifier_str oai:academica-e.unavarra.es:2454/31361
network_acronym_str ES
network_name_str España
repository_id_str
spelling Robust multisampled capacitor voltage active damping for grid-connected power convertersSamanes Pascual, JavierUrtasun Erburu, AndoniGubía Villabona, EugenioPetri, AlbertoActive dampingCapacitor voltage derivativeConverter controlGrid connected power converterLCL-filterMultisamplingThe derivative feedback of the capacitor voltage is one of the most extended active damping strategies, used to eliminate stability problems in grid-connected power converters with an LCL filter. This strategy is equivalent to the implementation of a virtual impedance in parallel with the filter capacitor. This virtual impedance is strongly affected by the control loop delays and frequency, creating changes in the sign of the emulated virtual resistor, and raising instability regions where the active damping is ineffective. As a consequence, the LCL resonance frequency is restricted to vary, as the effective grid inductance changes, within the active damping stability region. This is an additional restriction imposed on the LCL filter design that can compromise the achievement of an optimised design. For this reason, in this work, a different strategy is presented; by adjusting the delay in the active damping feedback path, it becomes stable within the range where the LCL resonance frequency can be located for a given filter design, achieving a robust damping. Analytical expressions are provided to adjust this delay. To widen the stability region of the capacitor voltage derivative active damping, a multisampled derivative is implemented, overcoming its limitations close to the control Nyquist frequency. Experimental and simulation results validate the active damping strategy presented.This work has been supported by the Spanish State Research Agency (AEI) and FEDER-UE under grant DPI2016-80641-R. This work was partially funded by the Public University of Navarre through a doctoral scholarship.ElsevierIngeniería Eléctrica, Electrónica y de ComunicaciónIngeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio IngeniaritzarenUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2454/31361reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/ES/1PE/DPI2016-80641-R© 2017 Elsevier Ltd. The manuscript version is made available under the CC BY-NC-ND 4.0 license.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/313612026-06-17T12:41:47Z
dc.title.none.fl_str_mv Robust multisampled capacitor voltage active damping for grid-connected power converters
title Robust multisampled capacitor voltage active damping for grid-connected power converters
spellingShingle Robust multisampled capacitor voltage active damping for grid-connected power converters
Samanes Pascual, Javier
Active damping
Capacitor voltage derivative
Converter control
Grid connected power converter
LCL-filter
Multisampling
title_short Robust multisampled capacitor voltage active damping for grid-connected power converters
title_full Robust multisampled capacitor voltage active damping for grid-connected power converters
title_fullStr Robust multisampled capacitor voltage active damping for grid-connected power converters
title_full_unstemmed Robust multisampled capacitor voltage active damping for grid-connected power converters
title_sort Robust multisampled capacitor voltage active damping for grid-connected power converters
dc.creator.none.fl_str_mv Samanes Pascual, Javier
Urtasun Erburu, Andoni
Gubía Villabona, Eugenio
Petri, Alberto
author Samanes Pascual, Javier
author_facet Samanes Pascual, Javier
Urtasun Erburu, Andoni
Gubía Villabona, Eugenio
Petri, Alberto
author_role author
author2 Urtasun Erburu, Andoni
Gubía Villabona, Eugenio
Petri, Alberto
author2_role author
author
author
dc.contributor.none.fl_str_mv Ingeniería Eléctrica, Electrónica y de Comunicación
Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
dc.subject.none.fl_str_mv Active damping
Capacitor voltage derivative
Converter control
Grid connected power converter
LCL-filter
Multisampling
topic Active damping
Capacitor voltage derivative
Converter control
Grid connected power converter
LCL-filter
Multisampling
description The derivative feedback of the capacitor voltage is one of the most extended active damping strategies, used to eliminate stability problems in grid-connected power converters with an LCL filter. This strategy is equivalent to the implementation of a virtual impedance in parallel with the filter capacitor. This virtual impedance is strongly affected by the control loop delays and frequency, creating changes in the sign of the emulated virtual resistor, and raising instability regions where the active damping is ineffective. As a consequence, the LCL resonance frequency is restricted to vary, as the effective grid inductance changes, within the active damping stability region. This is an additional restriction imposed on the LCL filter design that can compromise the achievement of an optimised design. For this reason, in this work, a different strategy is presented; by adjusting the delay in the active damping feedback path, it becomes stable within the range where the LCL resonance frequency can be located for a given filter design, achieving a robust damping. Analytical expressions are provided to adjust this delay. To widen the stability region of the capacitor voltage derivative active damping, a multisampled derivative is implemented, overcoming its limitations close to the control Nyquist frequency. Experimental and simulation results validate the active damping strategy presented.
publishDate 2019
dc.date.none.fl_str_mv 2019
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/2454/31361
url https://hdl.handle.net/2454/31361
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/1PE/DPI2016-80641-R
dc.rights.none.fl_str_mv © 2017 Elsevier Ltd. The manuscript version is made available under the CC BY-NC-ND 4.0 license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2017 Elsevier Ltd. The manuscript version is made available under the CC BY-NC-ND 4.0 license.
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869418427676884992
score 15.811543

Similar Items