Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.

Detalhes bibliográficos
Autor(a) principal: Avila Naranjo, Rafael Ricardo
Data de Publicação: 2014
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: http://www.teses.usp.br/teses/disponiveis/3/3143/tde-30122014-112624/
Resumo: Most of the modern wind turbines are based on doubly fed induction generators (DFIG), with a back to back power converter connecting the rotor to the network. It is known that voltage dips at the stator terminals can cause overcurrents in the rotor windings, which could threaten the converter integrity. In order to protect the converter, several strategies have been proposed in technical literature, requiring in some cases the converter deactivation, which disables the control that the converter has over the power transference between the generator and the system. This last is not a desirable behavior since it can put on risk the voltage stability of the electric system. It is the aim of this dissertation to introduce and compare five of those protection strategies, through the computational simulation of their performance in case of balanced voltage dips. In order to achieve this, the electromagnetic dynamic model of the DFIG was theoretically developed, as well as the models of the strategies of interest. Subsequently, the computational model of the system was assembled in the software Matlabs Simulink to finally perform the desired simulations and its corresponding analysis.
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spelling Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.Alternativas ao uso do sistema Crowbar em turbinas eólicas equipadas no DFIG durante afundamentos balanceados de tensão na rede.Circuitos elétricosDoubly fed induction generatorEnergia eólicaTurbinasVoltage dipWind powerMost of the modern wind turbines are based on doubly fed induction generators (DFIG), with a back to back power converter connecting the rotor to the network. It is known that voltage dips at the stator terminals can cause overcurrents in the rotor windings, which could threaten the converter integrity. In order to protect the converter, several strategies have been proposed in technical literature, requiring in some cases the converter deactivation, which disables the control that the converter has over the power transference between the generator and the system. This last is not a desirable behavior since it can put on risk the voltage stability of the electric system. It is the aim of this dissertation to introduce and compare five of those protection strategies, through the computational simulation of their performance in case of balanced voltage dips. In order to achieve this, the electromagnetic dynamic model of the DFIG was theoretically developed, as well as the models of the strategies of interest. Subsequently, the computational model of the system was assembled in the software Matlabs Simulink to finally perform the desired simulations and its corresponding analysis.A maioria das turbinas eólicas modernas é baseada em geradores de indução duplamente alimentados (GIDE), com um back to back conversor de energia que liga o rotor para a rede. Sabe-se que as quedas de tensão nos terminais do estator podem causar sobrecorrentes nos enrolamentos do rotor, que podem ameaçar a integridade do conversor. A fim de proteger o conversor, várias estratégias têm sido propostas na literatura técnica, exigindo, em alguns casos, a desativação do conversor, o qual desativa o controlo do conversor, que possui ao longo da transferência de energia entre o gerador e o sistema. Este último não é um comportamento desejável, uma vez que pode colocar em risco a estabilidade de tensão do sistema elétrico. É o objetivo desta dissertação apresentar e comparar cinco dessas estratégias de proteção, através da simulação computacional de seu desempenho em caso de quedas de tensão equilibrada. A fim de alcançar este objetivo, o modelo dinâmico eletromagnética do DFIG teoricamente foi desenvolvido, bem como os modelos das estratégias de interesse. Subsequentemente, o modelo computacional do sistema foi montado no software Simulink do Matlab para finalmente executar as simulações desejadas e sua análise correspondente.Biblioteca Digitais de Teses e Dissertações da USPSalles, Maurício Barbosa de CamargoAvila Naranjo, Rafael Ricardo 2014-07-17info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://www.teses.usp.br/teses/disponiveis/3/3143/tde-30122014-112624/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2017-09-04T21:03:47Zoai:teses.usp.br:tde-30122014-112624Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212017-09-04T21:03:47Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.
Alternativas ao uso do sistema Crowbar em turbinas eólicas equipadas no DFIG durante afundamentos balanceados de tensão na rede.
title Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.
spellingShingle Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.
Avila Naranjo, Rafael Ricardo
Circuitos elétricos
Doubly fed induction generator
Energia eólica
Turbinas
Voltage dip
Wind power
title_short Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.
title_full Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.
title_fullStr Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.
title_full_unstemmed Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.
title_sort Alternatives to the use of the crowbar circuit in DFIG based wind turbines during balanced voltage dips.
author Avila Naranjo, Rafael Ricardo
author_facet Avila Naranjo, Rafael Ricardo
author_role author
dc.contributor.none.fl_str_mv Salles, Maurício Barbosa de Camargo
dc.contributor.author.fl_str_mv Avila Naranjo, Rafael Ricardo
dc.subject.por.fl_str_mv Circuitos elétricos
Doubly fed induction generator
Energia eólica
Turbinas
Voltage dip
Wind power
topic Circuitos elétricos
Doubly fed induction generator
Energia eólica
Turbinas
Voltage dip
Wind power
description Most of the modern wind turbines are based on doubly fed induction generators (DFIG), with a back to back power converter connecting the rotor to the network. It is known that voltage dips at the stator terminals can cause overcurrents in the rotor windings, which could threaten the converter integrity. In order to protect the converter, several strategies have been proposed in technical literature, requiring in some cases the converter deactivation, which disables the control that the converter has over the power transference between the generator and the system. This last is not a desirable behavior since it can put on risk the voltage stability of the electric system. It is the aim of this dissertation to introduce and compare five of those protection strategies, through the computational simulation of their performance in case of balanced voltage dips. In order to achieve this, the electromagnetic dynamic model of the DFIG was theoretically developed, as well as the models of the strategies of interest. Subsequently, the computational model of the system was assembled in the software Matlabs Simulink to finally perform the desired simulations and its corresponding analysis.
publishDate 2014
dc.date.none.fl_str_mv 2014-07-17
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.teses.usp.br/teses/disponiveis/3/3143/tde-30122014-112624/
url http://www.teses.usp.br/teses/disponiveis/3/3143/tde-30122014-112624/
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv
dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Liberar o conteúdo para acesso público.
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
dc.source.none.fl_str_mv
reponame:Biblioteca Digital de Teses e Dissertações da USP
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Biblioteca Digital de Teses e Dissertações da USP
collection Biblioteca Digital de Teses e Dissertações da USP
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)
repository.mail.fl_str_mv virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br
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