Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais
Ano de defesa: | 2009 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
|
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia Elétrica
|
Departamento: |
Engenharia Elétrica
|
País: |
BR
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/8476 |
Resumo: | Among the soft-switching techniques, the zero-voltage-transition (ZVT) technique has been accepted well by the industry due its attractive characteristics, such as simplicity, low losses in the auxiliary commutation circuit (ACC), operation with soft-switching for a wide load range, and closest operation to the PWM converter counterpart. In three-phase voltage-source inverters (multipole converters), a substantial diversity of ZVT topologies has been proposed to improve the performance of the converters, such as the ZVT circuits with six auxiliary switches, which meet the demand for high efficiency, low current and voltage stresses in semiconductor devices, and operation in high switching frequency. Aiming to make the ZVT multipole converter even more attractive to the industry, many topologies have been proposed to reduce the number of auxiliary switches and, consequently, the cost related to the ACC, by means of an integrated auxiliary circuit that provides conditions to commutate every semiconductor device of the multipole converter under zero-voltage condition. Regrettably, these structures introduce some restrictions on converter operation, such as the requirement for synchronized switching events in the PWM poles, resulting in more complex modulation techniques, with poorer power quality than the six auxiliary switch ZVT. To avoid these restrictions, simplified ACCs have been proposed, where the ACC is simplified individually per PWM pole. An important consequence of this approach is that the PWM poles can be modulated independently in multipole applications, allowing the application of any modulation strategy. However, the known simplified ZVT topologies were derived by multiple attempts due to the lack of a synthesis methodology, as had been proposed to integrated topologies. Thus, this work proposes a novel concept to generate simplified ZVT topologies to each bidirectional PWM pole. With the proposed methodology, the already known simplified ZVT topologies are systematized, as well as new topologies can be derived. Additionally, in order to address the benefits and constraints of integrated and simplified ZVT topologies, in this work a comparison is made between the concepts of integration and simplification of ZVT auxiliary circuits applied to bidirectional PWM poles, where the concepts of each approach are defined, recognizing their main advantages and limitations. So, the modulation strategies, the resulting losses in the main and auxiliary circuits and the harmonic content of the voltage synthesized by two selected topologies are theoretically and experimentally analyzed. Therefore, it is demonstrated that when the load demands a voltage with low harmonic content, the simplified ZVT topologies are indicated. However, when the number of components in the auxiliary circuit is the main concern, the integrated ZVT topologies can be employed. |
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2017-06-012017-06-012009-11-27BELTRAME, Rafael Concatto. Synthesis methodology for simplified ZVT topologies applied to bidirectional PWM poles. 2009. 181 f. Dissertação (Mestrado em Engenharia Elétrica) - Universidade Federal de Santa Maria, Santa Maria, 2009.http://repositorio.ufsm.br/handle/1/8476Among the soft-switching techniques, the zero-voltage-transition (ZVT) technique has been accepted well by the industry due its attractive characteristics, such as simplicity, low losses in the auxiliary commutation circuit (ACC), operation with soft-switching for a wide load range, and closest operation to the PWM converter counterpart. In three-phase voltage-source inverters (multipole converters), a substantial diversity of ZVT topologies has been proposed to improve the performance of the converters, such as the ZVT circuits with six auxiliary switches, which meet the demand for high efficiency, low current and voltage stresses in semiconductor devices, and operation in high switching frequency. Aiming to make the ZVT multipole converter even more attractive to the industry, many topologies have been proposed to reduce the number of auxiliary switches and, consequently, the cost related to the ACC, by means of an integrated auxiliary circuit that provides conditions to commutate every semiconductor device of the multipole converter under zero-voltage condition. Regrettably, these structures introduce some restrictions on converter operation, such as the requirement for synchronized switching events in the PWM poles, resulting in more complex modulation techniques, with poorer power quality than the six auxiliary switch ZVT. To avoid these restrictions, simplified ACCs have been proposed, where the ACC is simplified individually per PWM pole. An important consequence of this approach is that the PWM poles can be modulated independently in multipole applications, allowing the application of any modulation strategy. However, the known simplified ZVT topologies were derived by multiple attempts due to the lack of a synthesis methodology, as had been proposed to integrated topologies. Thus, this work proposes a novel concept to generate simplified ZVT topologies to each bidirectional PWM pole. With the proposed methodology, the already known simplified ZVT topologies are systematized, as well as new topologies can be derived. Additionally, in order to address the benefits and constraints of integrated and simplified ZVT topologies, in this work a comparison is made between the concepts of integration and simplification of ZVT auxiliary circuits applied to bidirectional PWM poles, where the concepts of each approach are defined, recognizing their main advantages and limitations. So, the modulation strategies, the resulting losses in the main and auxiliary circuits and the harmonic content of the voltage synthesized by two selected topologies are theoretically and experimentally analyzed. Therefore, it is demonstrated that when the load demands a voltage with low harmonic content, the simplified ZVT topologies are indicated. However, when the number of components in the auxiliary circuit is the main concern, the integrated ZVT topologies can be employed.Entre as técnicas de comutação suave propostas na literatura, a técnica de comutação transição sob tensão nula (Zero-Voltage-Transition ZVT) tem sido bem aceita pela indústria em função de suas características atrativas, como simplicidade, baixas perdas no circuito de auxílio à comutação (CAC), condições de comutação sob zero de tensão asseguradas para uma ampla faixa de cargas e operação próxima a do conversor equivalente dissipativo. Em aplicações com inversores trifásicos alimentados em tensão (conversores multipólos), uma grande variedade de topologias ZVT tem sido proposta no sentido de aprimorar o desempenho dos conversores, como as topologias ZVT com seis chaves semicondutoras auxiliares, as quais atendem a demanda por alta eficiência, baixos esforços de tensão e corrente sobre os dispositivos semicondutores, e operação em freqüências elevadas. Buscando tornar as topologias ZVT aplicadas a conversores multipólos ainda mais atrativas a aplicações industriais, inúmeras topologias ZVT integradas, as quais proporcionam condições de comutação sob zero de tensão a todos os dispositivos semicondutores do conversor por meio de um CAC com um número reduzido de chaves semicondutoras auxiliares, têm sido propostas. Infelizmente, essas estruturas introduzem restrições à operação do conversor, resultando em estratégias de modulação complexas, com um conteúdo harmônico nas tensões sintetizadas superior ao observado nas topologias contendo seis chaves auxiliares. Com o objetivo de evitar as restrições mencionadas, CACs simplificados têm sido propostos, onde o CAC é simplificado individualmente em cada pólo PWM do conversor. Como uma importante conseqüência dessa abordagem, os pólos PWM podem ser modulados independentemente, permitindo a aplicação de qualquer estratégia de modulação convencional. Entretanto, diferentemente das topologias ZVT integradas, para as quais a literatura apresenta propostas de metodologias de síntese, as topologias ZVT simplificadas são obtidas sem um procedimento definido. Assim, esse trabalho propõe um novo conceito para sintetizar topologias ZVT simplificadas aplicadas a cada pólo PWM bidirecional do conversor. Com a metodologia de síntese proposta, as topologias ZVT simplificadas já publicadas são sistematizadas, assim como novas topologias podem ser obtidas. Adicionalmente, com o objetivo de identificar os benefícios e as restrições inerentes às topologias ZVT integradas e simplificadas, esse trabalho propõe uma análise comparativa entre ambas as abordagens, onde os conceitos de cada abordagem são definidos, reconhecendo suas vantagens e limitações. Ainda, as estratégias de modulação, as perdas resultantes nos circuitos principal e auxiliar do conversor, e o conteúdo harmônico das tensões sintetizadas por duas topologias selecionadas são comparados teórica e experimentalmente. Assim, demonstra-se que quando a aplicação demanda um CAC com um reduzido número de componentes auxiliares, as topologias ZVT integradas são as indicadas. Por outro lado, quando a aplicação exige um baixo conteúdo harmônico nas variáveis de interesse, as topologias ZVT simplificadas são a alternativa, já que não comprometem os graus de liberdade na modulação do conversor.Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em Engenharia ElétricaUFSMBREngenharia ElétricaEngenharia elétricaEletrônica de potênciaComutação suaveElectrical engineeringPower electronicsSoft-switchingCNPQ::ENGENHARIAS::ENGENHARIA ELETRICAMetodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionaisSynthesis methodology for simplified ZVT topologies applied to bidirectional PWM polesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisHey, Hélio Leãeshttp://lattes.cnpq.br/8993475915541103Martins, Mário Lúcio da Silvahttp://lattes.cnpq.br/2730012969211616Russi, Jumar Luíshttp://lattes.cnpq.br/8066639517474565Pinheiro, José Reneshttp://lattes.cnpq.br/2333794966860226http://lattes.cnpq.br/0818364721574204Beltrame, Rafael Concatto3004000000074005003003003005002cf84cef-ab28-4e40-8cfc-29890f1dbfd78709e640-180a-47e8-a4b0-2a6dcccb1248d1a556f1-a0df-47d9-8bb8-e89e5f9ba3854216d215-b426-48bb-8763-a2bdd4fcdeecd18bd681-bab1-42a2-8e9f-0412560790a1info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALBELTRAME, RAFAEL CONCATTO.pdfapplication/pdf4629297http://repositorio.ufsm.br/bitstream/1/8476/1/BELTRAME%2c%20RAFAEL%20CONCATTO.pdf221cd855719f4bc183bce16ee70bf406MD51TEXTBELTRAME, RAFAEL CONCATTO.pdf.txtBELTRAME, RAFAEL CONCATTO.pdf.txtExtracted texttext/plain349437http://repositorio.ufsm.br/bitstream/1/8476/2/BELTRAME%2c%20RAFAEL%20CONCATTO.pdf.txt441a1ac32845d09eb36fff97b0f7a405MD52THUMBNAILBELTRAME, RAFAEL CONCATTO.pdf.jpgBELTRAME, RAFAEL CONCATTO.pdf.jpgIM Thumbnailimage/jpeg4981http://repositorio.ufsm.br/bitstream/1/8476/3/BELTRAME%2c%20RAFAEL%20CONCATTO.pdf.jpg1bd245b47612fcd85228db005c7d5d5bMD531/84762022-06-29 11:46:45.4oai:repositorio.ufsm.br:1/8476Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-06-29T14:46:45Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais |
dc.title.alternative.eng.fl_str_mv |
Synthesis methodology for simplified ZVT topologies applied to bidirectional PWM poles |
title |
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais |
spellingShingle |
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais Beltrame, Rafael Concatto Engenharia elétrica Eletrônica de potência Comutação suave Electrical engineering Power electronics Soft-switching CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
title_short |
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais |
title_full |
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais |
title_fullStr |
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais |
title_full_unstemmed |
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais |
title_sort |
Metodologia de síntese de topologias ZVT simplificadas aplicadas a pólos PWM bidirecionais |
author |
Beltrame, Rafael Concatto |
author_facet |
Beltrame, Rafael Concatto |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Hey, Hélio Leães |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/8993475915541103 |
dc.contributor.advisor-co1.fl_str_mv |
Martins, Mário Lúcio da Silva |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/2730012969211616 |
dc.contributor.referee1.fl_str_mv |
Russi, Jumar Luís |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/8066639517474565 |
dc.contributor.referee2.fl_str_mv |
Pinheiro, José Renes |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/2333794966860226 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0818364721574204 |
dc.contributor.author.fl_str_mv |
Beltrame, Rafael Concatto |
contributor_str_mv |
Hey, Hélio Leães Martins, Mário Lúcio da Silva Russi, Jumar Luís Pinheiro, José Renes |
dc.subject.por.fl_str_mv |
Engenharia elétrica Eletrônica de potência Comutação suave |
topic |
Engenharia elétrica Eletrônica de potência Comutação suave Electrical engineering Power electronics Soft-switching CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
dc.subject.eng.fl_str_mv |
Electrical engineering Power electronics Soft-switching |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
description |
Among the soft-switching techniques, the zero-voltage-transition (ZVT) technique has been accepted well by the industry due its attractive characteristics, such as simplicity, low losses in the auxiliary commutation circuit (ACC), operation with soft-switching for a wide load range, and closest operation to the PWM converter counterpart. In three-phase voltage-source inverters (multipole converters), a substantial diversity of ZVT topologies has been proposed to improve the performance of the converters, such as the ZVT circuits with six auxiliary switches, which meet the demand for high efficiency, low current and voltage stresses in semiconductor devices, and operation in high switching frequency. Aiming to make the ZVT multipole converter even more attractive to the industry, many topologies have been proposed to reduce the number of auxiliary switches and, consequently, the cost related to the ACC, by means of an integrated auxiliary circuit that provides conditions to commutate every semiconductor device of the multipole converter under zero-voltage condition. Regrettably, these structures introduce some restrictions on converter operation, such as the requirement for synchronized switching events in the PWM poles, resulting in more complex modulation techniques, with poorer power quality than the six auxiliary switch ZVT. To avoid these restrictions, simplified ACCs have been proposed, where the ACC is simplified individually per PWM pole. An important consequence of this approach is that the PWM poles can be modulated independently in multipole applications, allowing the application of any modulation strategy. However, the known simplified ZVT topologies were derived by multiple attempts due to the lack of a synthesis methodology, as had been proposed to integrated topologies. Thus, this work proposes a novel concept to generate simplified ZVT topologies to each bidirectional PWM pole. With the proposed methodology, the already known simplified ZVT topologies are systematized, as well as new topologies can be derived. Additionally, in order to address the benefits and constraints of integrated and simplified ZVT topologies, in this work a comparison is made between the concepts of integration and simplification of ZVT auxiliary circuits applied to bidirectional PWM poles, where the concepts of each approach are defined, recognizing their main advantages and limitations. So, the modulation strategies, the resulting losses in the main and auxiliary circuits and the harmonic content of the voltage synthesized by two selected topologies are theoretically and experimentally analyzed. Therefore, it is demonstrated that when the load demands a voltage with low harmonic content, the simplified ZVT topologies are indicated. However, when the number of components in the auxiliary circuit is the main concern, the integrated ZVT topologies can be employed. |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009-11-27 |
dc.date.accessioned.fl_str_mv |
2017-06-01 |
dc.date.available.fl_str_mv |
2017-06-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
BELTRAME, Rafael Concatto. Synthesis methodology for simplified ZVT topologies applied to bidirectional PWM poles. 2009. 181 f. Dissertação (Mestrado em Engenharia Elétrica) - Universidade Federal de Santa Maria, Santa Maria, 2009. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/8476 |
identifier_str_mv |
BELTRAME, Rafael Concatto. Synthesis methodology for simplified ZVT topologies applied to bidirectional PWM poles. 2009. 181 f. Dissertação (Mestrado em Engenharia Elétrica) - Universidade Federal de Santa Maria, Santa Maria, 2009. |
url |
http://repositorio.ufsm.br/handle/1/8476 |
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