Abordagem normalizada para conversores ressonantes
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/14168 |
Resumo: | Resonant converters reveal their excellence by means of the philosophy of shaping the converters waveforms in a sinusoidal fashion, allowing soft-switching, increase the operating frequency and reduce electromagnetic interference, which are important miniaturization requirements for high efficiency converters. Furthermore, applications in renewable energy sources, electric vehicles, LED, mobile devices, wireless power transfer and so on, have been recent research and make use of unique attributes of these converters. Notwithstanding, resonant converters analysis is more complex than their pwm counterparts due to multiresonant procedure in the converter, so the analytical solutions are hard to be obtained. This master’s thesis aims the development of a normalized approach for resonant converters analysis and design. The method is used to represent the system in a normalized state-space model that is independent of real circuit parameters, such as, inductances, capacitances and resistances. In addition, the normalization procedure is performed by means of an equivalence transformation, in which, a new state vector that is composed by terms as the square root of the stored energy in reactive components, is used to system modeling, making the system independently of input and operating frequency. Therefore, gain and component stress curves can be obtained for any operating point, and they can be used to converters design. Analysis and design of several converters are performed and a comparison of theoretical, simulation and experimental results is conducted. A converter selection design procedure is developed, in which, starting from specifications, it is possible to compare a number of converters and elucidate the choice of the most suitable topology. The main advantages of the methodology are: converters analysis for any operating point independently of circuit parameters; normalized design; obtaining gain and component stress curves and topologies comparison. The results can be used as theoretical basis for high efficiency systems development that operate in increased frequency, which are a trend in power electronics applications. |
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Abordagem normalizada para conversores ressonantesNormalized approach for resonant power convertersConversores ressonantesAnálise normalizadaTransformação de equivalênciaModelagem de circuitosResonant convertersNormalized analysisEquivalence transformationCircuit modelingCNPQ::ENGENHARIAS::ENGENHARIA ELETRICAResonant converters reveal their excellence by means of the philosophy of shaping the converters waveforms in a sinusoidal fashion, allowing soft-switching, increase the operating frequency and reduce electromagnetic interference, which are important miniaturization requirements for high efficiency converters. Furthermore, applications in renewable energy sources, electric vehicles, LED, mobile devices, wireless power transfer and so on, have been recent research and make use of unique attributes of these converters. Notwithstanding, resonant converters analysis is more complex than their pwm counterparts due to multiresonant procedure in the converter, so the analytical solutions are hard to be obtained. This master’s thesis aims the development of a normalized approach for resonant converters analysis and design. The method is used to represent the system in a normalized state-space model that is independent of real circuit parameters, such as, inductances, capacitances and resistances. In addition, the normalization procedure is performed by means of an equivalence transformation, in which, a new state vector that is composed by terms as the square root of the stored energy in reactive components, is used to system modeling, making the system independently of input and operating frequency. Therefore, gain and component stress curves can be obtained for any operating point, and they can be used to converters design. Analysis and design of several converters are performed and a comparison of theoretical, simulation and experimental results is conducted. A converter selection design procedure is developed, in which, starting from specifications, it is possible to compare a number of converters and elucidate the choice of the most suitable topology. The main advantages of the methodology are: converters analysis for any operating point independently of circuit parameters; normalized design; obtaining gain and component stress curves and topologies comparison. The results can be used as theoretical basis for high efficiency systems development that operate in increased frequency, which are a trend in power electronics applications.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESConversores ressonantes revelam sua excelência por meio da filosofia de moldar as formas de onda dos conversores de maneira senoidal, possibilitando operação com comutação suave, aumento da frequência de operação e redução de interferência eletromagnética, requisitos importantes para miniaturização de conversores de alta eficiência. Além disso, aplicações em fontes renováveis, veículos elétricos, LED, dispositivos portáteis, transferência de energia sem fio, entre outras, têm sido alvo de estudo e fazem uso dos atributos únicos destes conversores. Não obstante, a análise de conversores ressonantes é mais complicada que seus contrapartes PWM devido às multirressonâncias envolvidas no processo de conversão de energia, o que dificulta obter soluções analíticas. A presente dissertação tem por objetivo o desenvolvimento de uma abordagem normalizada para análise e projeto de conversores ressonantes. A abordagem desenvolvida representa o sistema em um modelo de espaço de estados normalizado independente de parâmetros de circuito, tais como indutâncias, capacitâncias e resistências. Ademais, o procedimento de normalização é realizado por meio de uma transformação de equivalência, em que um novo vetor de estados considerando a raiz quadrada da energia armazenada nos componentes reativos é utilizado para modelar o sistema, tornando-o independente da entrada e frequência de operação. Logo, curvas de ganho podem ser obtidas para qualquer ponto de operação, e são utilizadas para projetar os conversores. Diversos conversores são analisados, projetados e utilizados para obtenção de um comparativo entre resultados teóricos, de simulação e experimentais. Um método de projeto orientado à escolha do conversor é desenvolvido, no qual, partindo de especificações, é possível comparar diversos conversores e elucidar a escolha do mais adequado. As vantagens da abordagem desenvolvida são: análise de conversores para qualquer ponto de operação, independentemente de parâmetros de circuito; projeto normalizado do conversor; obtenção de curvas de ganho e estresse e realização de comparativo entre topologias. Os resultados podem ser usados como base teórica para o desenvolvimento de sistemas de alto desempenho, operando em frequências elevadas, que são uma tendência nas aplicações de eletrônica de potência.Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de TecnologiaBisogno, Fábio Eckehttp://lattes.cnpq.br/6267716868501584Martins, Mário Lúcio da Silvahttp://lattes.cnpq.br/2730012969211616Perin, Arnaldo Josehttp://lattes.cnpq.br/0599286166150301Montagner, Vinícius Folettohttp://lattes.cnpq.br/1107194715234856Mendonça, Lucas Sangoi2018-09-03T22:00:20Z2018-09-03T22:00:20Z2017-08-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://repositorio.ufsm.br/handle/1/14168porAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2018-09-03T22:00:20Zoai:repositorio.ufsm.br:1/14168Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2018-09-03T22:00:20Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Abordagem normalizada para conversores ressonantes Normalized approach for resonant power converters |
title |
Abordagem normalizada para conversores ressonantes |
spellingShingle |
Abordagem normalizada para conversores ressonantes Mendonça, Lucas Sangoi Conversores ressonantes Análise normalizada Transformação de equivalência Modelagem de circuitos Resonant converters Normalized analysis Equivalence transformation Circuit modeling CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
title_short |
Abordagem normalizada para conversores ressonantes |
title_full |
Abordagem normalizada para conversores ressonantes |
title_fullStr |
Abordagem normalizada para conversores ressonantes |
title_full_unstemmed |
Abordagem normalizada para conversores ressonantes |
title_sort |
Abordagem normalizada para conversores ressonantes |
author |
Mendonça, Lucas Sangoi |
author_facet |
Mendonça, Lucas Sangoi |
author_role |
author |
dc.contributor.none.fl_str_mv |
Bisogno, Fábio Ecke http://lattes.cnpq.br/6267716868501584 Martins, Mário Lúcio da Silva http://lattes.cnpq.br/2730012969211616 Perin, Arnaldo Jose http://lattes.cnpq.br/0599286166150301 Montagner, Vinícius Foletto http://lattes.cnpq.br/1107194715234856 |
dc.contributor.author.fl_str_mv |
Mendonça, Lucas Sangoi |
dc.subject.por.fl_str_mv |
Conversores ressonantes Análise normalizada Transformação de equivalência Modelagem de circuitos Resonant converters Normalized analysis Equivalence transformation Circuit modeling CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
topic |
Conversores ressonantes Análise normalizada Transformação de equivalência Modelagem de circuitos Resonant converters Normalized analysis Equivalence transformation Circuit modeling CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
description |
Resonant converters reveal their excellence by means of the philosophy of shaping the converters waveforms in a sinusoidal fashion, allowing soft-switching, increase the operating frequency and reduce electromagnetic interference, which are important miniaturization requirements for high efficiency converters. Furthermore, applications in renewable energy sources, electric vehicles, LED, mobile devices, wireless power transfer and so on, have been recent research and make use of unique attributes of these converters. Notwithstanding, resonant converters analysis is more complex than their pwm counterparts due to multiresonant procedure in the converter, so the analytical solutions are hard to be obtained. This master’s thesis aims the development of a normalized approach for resonant converters analysis and design. The method is used to represent the system in a normalized state-space model that is independent of real circuit parameters, such as, inductances, capacitances and resistances. In addition, the normalization procedure is performed by means of an equivalence transformation, in which, a new state vector that is composed by terms as the square root of the stored energy in reactive components, is used to system modeling, making the system independently of input and operating frequency. Therefore, gain and component stress curves can be obtained for any operating point, and they can be used to converters design. Analysis and design of several converters are performed and a comparison of theoretical, simulation and experimental results is conducted. A converter selection design procedure is developed, in which, starting from specifications, it is possible to compare a number of converters and elucidate the choice of the most suitable topology. The main advantages of the methodology are: converters analysis for any operating point independently of circuit parameters; normalized design; obtaining gain and component stress curves and topologies comparison. The results can be used as theoretical basis for high efficiency systems development that operate in increased frequency, which are a trend in power electronics applications. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-08-04 2018-09-03T22:00:20Z 2018-09-03T22:00:20Z |
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://repositorio.ufsm.br/handle/1/14168 |
url |
http://repositorio.ufsm.br/handle/1/14168 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://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 |
Universidade Federal de Santa Maria Brasil Engenharia Elétrica UFSM Programa de Pós-Graduação em Engenharia Elétrica Centro de Tecnologia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Brasil Engenharia Elétrica UFSM Programa de Pós-Graduação em Engenharia Elétrica Centro de Tecnologia |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
atendimento.sib@ufsm.br||tedebc@gmail.com |
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1805922034751897600 |