Control strategy of grid connected power converter based on virtual flux approach

A la portada consta el nom del programa interuniversitari: Joint Doctoral Programme in Electric Energy Systems [by the] Universidad de Málaga, Universidad de Sevilla, Universidad del País Vasco/Euskal Erriko Unibertsitatea i Universitat Politècnica de Catalunya

Detalhes bibliográficos
Autor: Roslan, Nurul Fazlin
Formato: tesis doctoral
Estado:Versión publicada
Fecha de publicación:2021
País:España
Recursos:CBUC, CESCA
Repositorio:TDR. Tesis Doctorales en Red
OAI Identifier:oai:www.tdx.cat:10803/673388
Acesso em linha:http://hdl.handle.net/10803/673388
https://dx.doi.org/10.5821/dissertation-2117-361636
Access Level:acceso abierto
Palavra-chave:Àrees temàtiques de la UPC::Enginyeria elèctrica
621.3
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network_name_str España
repository_id_str
dc.title.none.fl_str_mv Control strategy of grid connected power converter based on virtual flux approach
title Control strategy of grid connected power converter based on virtual flux approach
spellingShingle Control strategy of grid connected power converter based on virtual flux approach
Roslan, Nurul Fazlin
Àrees temàtiques de la UPC::Enginyeria elèctrica
621.3
title_short Control strategy of grid connected power converter based on virtual flux approach
title_full Control strategy of grid connected power converter based on virtual flux approach
title_fullStr Control strategy of grid connected power converter based on virtual flux approach
title_full_unstemmed Control strategy of grid connected power converter based on virtual flux approach
title_sort Control strategy of grid connected power converter based on virtual flux approach
dc.creator.none.fl_str_mv Roslan, Nurul Fazlin
author Roslan, Nurul Fazlin
author_facet Roslan, Nurul Fazlin
author_role author
dc.contributor.none.fl_str_mv Luna Alloza, Álvaro
Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica
dc.subject.none.fl_str_mv Àrees temàtiques de la UPC::Enginyeria elèctrica
621.3
topic Àrees temàtiques de la UPC::Enginyeria elèctrica
621.3
description A la portada consta el nom del programa interuniversitari: Joint Doctoral Programme in Electric Energy Systems [by the] Universidad de Málaga, Universidad de Sevilla, Universidad del País Vasco/Euskal Erriko Unibertsitatea i Universitat Politècnica de Catalunya
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
info:eu-repo/semantics/publishedVersion
format doctoralThesis
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10803/673388
https://dx.doi.org/10.5821/dissertation-2117-361636
url http://hdl.handle.net/10803/673388
https://dx.doi.org/10.5821/dissertation-2117-361636
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 157 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de Catalunya
publisher.none.fl_str_mv Universitat Politècnica de Catalunya
dc.source.none.fl_str_mv TDX (Tesis Doctorals en Xarxa)
reponame:TDR. Tesis Doctorales en Red
instname:CBUC, CESCA
instname_str CBUC, CESCA
reponame_str TDR. Tesis Doctorales en Red
collection TDR. Tesis Doctorales en Red
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869419980199559168
spelling Control strategy of grid connected power converter based on virtual flux approachRoslan, Nurul FazlinÀrees temàtiques de la UPC::Enginyeria elèctrica621.3A la portada consta el nom del programa interuniversitari: Joint Doctoral Programme in Electric Energy Systems [by the] Universidad de Málaga, Universidad de Sevilla, Universidad del País Vasco/Euskal Erriko Unibertsitatea i Universitat Politècnica de CatalunyaDistributed Generation (DG) provides an alternative to the Centralized Generation (CG) by means of generating electricity near to the end user of power with the employment of small-scale technologies to produce electricity, mainly using Renewable Energy Sources (RES). The prospects of renewable energy integration during the next years are still very optimistic. This PhD dissertation is made to provide an alternative control framework for the grid connected power converter by adopting the virtual flux concept in the control layer. This dissertation can be divided into three main topics. The 1st topic presents the voltage sensorless control system for the grid-connected power converter. The control system presented is done without depending on AC-voltage measurement where the grid synchronization is based on the Virtual Flux (VF) estimation. In this regard, the Frequency Locked Loop (FLL) is used in conjunction with the estimation scheme to make the system fully adaptive to the frequency changes. This voltage sensorless application is useful for reducing cost and complexity of the control hardware. It is also can be utilized in case of limited reliability or availability of voltage measurements at the intended point of synchronization to the grid. Considering that most previous studies are based on the VF estimation for the case of power converter connected to the grid through the L-filter or LC-filter, this dissertation is focused on the power converter connected to the grid through the LCL filter. The Proportional Resonant (PR) current controller is adopted in the inner loop control of the power electronics-based converter to test the performance of such system. Another control method based on VF synchronization that permits to control the active and reactive power delivery in a remote point of the grid is also presented in this dissertation. This is due to the fact that the VF is implemented that the voltage in a remote point of the line can be estimated. As it will be shown in simulations and experiments, the proposed control scheme provides a good tracking and dynamic performance under step changes in the reference power. The fast synchronization and the smooth reference tracking achieved in transient conditions have demonstrated the effectiveness of the Dual Second Order Generalized Integrator controlled as Quadrature Signal Generator (DSOGI-QSG) and also the current controller used in the proposed system. In addition to the power control itself, this study could also benefit the frequency and the voltage regulation methods in distributed generation applications as for instance in microgrid. Considering the fact that the grid connected power converter can be controlled as a virtual synchronous generator where the flux is a variable to be used for controlling its operation, this dissertation also presents a Virtual Synchronous Flux Controller (VSFC) as a new control framework of the grid connected power converter. In this regard, a new control strategy in the inner loop control of the power converter will be proposed. The main components of the outer loop control of VSFC are based on the active and reactive power control. The results presented show that the VSFC works well to control the active and reactive power without considering any synchronization system. The inner loop control is able to work as it is required, and the measurement flux is able to track the reference flux without any significant delays. All the work presented in this dissertation are supported by mathematical and simulation analysis. In order to endorse the conclusions achieved, a complete experimental validations have been conducted before wrapping this dissertation with a conclusion and recommendation for future enhancement of the control strategies that have been presented.Sistemes d'energia elèctricaDOCTORAT EN SISTEMES D'ENERGIA ELÈCTRICA (Pla 2013)Universitat Politècnica de CatalunyaLuna Alloza, ÁlvaroUniversitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica202220222021info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/publishedVersion157 p.application/pdfapplication/pdfhttp://hdl.handle.net/10803/673388https://dx.doi.org/10.5821/dissertation-2117-361636TDX (Tesis Doctorals en Xarxa)reponame:TDR. Tesis Doctorales en Redinstname:CBUC, CESCAInglésADVERTIMENT. Tots els drets reservats. L'accés als continguts d'aquesta tesi doctoral i la seva utilització ha de respectar els drets de la persona autora. Pot ser utilitzada per a consulta o estudi personal, així com en activitats o materials d'investigació i docència en els termes establerts a l'art. 32 del Text Refós de la Llei de Propietat Intel·lectual (RDL 1/1996). Per altres utilitzacions es requereix l'autorització prèvia i expressa de la persona autora. En qualsevol cas, en la utilització dels seus continguts caldrà indicar de forma clara el nom i cognoms de la persona autora i el títol de la tesi doctoral. No s'autoritza la seva reproducció o altres formes d'explotació efectuades amb finalitats de lucre ni la seva comunicació pública des d'un lloc aliè al servei TDX. Tampoc s'autoritza la presentació del seu contingut en una finestra o marc aliè a TDX (framing). Aquesta reserva de drets afecta tant als continguts de la tesi com als seus resums i índexs.info:eu-repo/semantics/openAccessoai:www.tdx.cat:10803/6733882026-06-14T12:46:07Z
score 15,301629

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