Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/19783 |
Resumo: | The convergence of knowledge related to mechanics, electronics and music has resulted in the development of a series of audio devices. Initially, signal amplifiers were developed working in linear region. Due to the efficiency limitations of this form of amplification, the concept of switched amplifiers with a theoretical efficiency of 100% was introduced. However, the high frequencies inherent in its operation add distortion, interference and worsening dynamic response. In order to unite the advantages of both forms of amplification, hybrid amplifiers emerged. The following work aims to propose a hybrid topology of audio signal amplification, called Double Half Bridge + Class AB. To this end, a literature review of the different forms of amplification is carried out, following the design of Class-D amplifier and a Hybrid amplifier, comparing their distortion and efficiency results, aiming to prove the sum of the advantages of the topologies. Both circuits are experimentally tested, resulting in design validation. The hybrid amplifier performed 90% efficiency: more than the theoretical limit of linear amplification (78.5%) and less than the designed Class-D performance (96%). The harmonic distortion of the hybrid circuit remained lower than the switching due to the output power, reaching a minimum value of 0.05%. It is concluded that the amplifier was successful in adding the advantages of both topologies. |
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2020-03-09T21:30:53Z2020-03-09T21:30:53Z2019-09-13http://repositorio.ufsm.br/handle/1/19783The convergence of knowledge related to mechanics, electronics and music has resulted in the development of a series of audio devices. Initially, signal amplifiers were developed working in linear region. Due to the efficiency limitations of this form of amplification, the concept of switched amplifiers with a theoretical efficiency of 100% was introduced. However, the high frequencies inherent in its operation add distortion, interference and worsening dynamic response. In order to unite the advantages of both forms of amplification, hybrid amplifiers emerged. The following work aims to propose a hybrid topology of audio signal amplification, called Double Half Bridge + Class AB. To this end, a literature review of the different forms of amplification is carried out, following the design of Class-D amplifier and a Hybrid amplifier, comparing their distortion and efficiency results, aiming to prove the sum of the advantages of the topologies. Both circuits are experimentally tested, resulting in design validation. The hybrid amplifier performed 90% efficiency: more than the theoretical limit of linear amplification (78.5%) and less than the designed Class-D performance (96%). The harmonic distortion of the hybrid circuit remained lower than the switching due to the output power, reaching a minimum value of 0.05%. It is concluded that the amplifier was successful in adding the advantages of both topologies.A convergência de conhecimentos relacionados à mecânica, eletrônica e música resultaram no desenvolvimento de uma série de dispositivos destinados ao áudio. Inicialmente, amplificadores de sinais foram desenvolvidos trabalhando em região linear. Devido às limitações de eficiência desta forma de amplificação, introduziu-se o conceito de amplificadores chaveados, com rendimento teórico de 100%. Porém, as altas frequências inerentes a seu funcionamento adicionam distorção, interferência e piora na resposta dinâmica. Visando unir as vantagens de ambas as formas de amplificação, surgiram os amplificadores híbridos. O seguinte trabalho objetiva propor uma topologia híbrida de amplificação de sinais de áudio, chamada Duplo Meia-Ponte + Classe AB. Para tal, é realizada a revisão bibliográfica das diferentes formas de amplificação, seguindo com o projeto de amplificador Classe-D e um amplificador Híbrido, comparando seus resultados de distorção e eficiência, visando comprovar a soma das vantagens das topologias. Ambos os circuitos são testados experimentalmente, resultando na validação dos projetos. O amplificador híbrido desempenhou 90% de eficiência: mais do que o limite teórico da amplificação linear (78,5%) e menos do que o desempenho do Classe-D projetado (96%). A distorção harmônica do circuito híbrido manteve-se menor do que o chaveado em função da potência de saída, atingindo valor mínimo de 0,05%. Conclui-se que o amplificador teve sucesso em somar as vantagens de ambas as topologias.porUniversidade Federal de Santa MariaCentro de TecnologiaPrograma de Pós-Graduação em Engenharia ElétricaUFSMBrasilEngenharia ElétricaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAmplificador classe-DAmplificador linearAmplificador híbridoEficiênciaTHDClass-D amplifierLinear amplifierHybrid amplifierEfficiencyCNPQ::ENGENHARIAS::ENGENHARIA ELETRICAConversores híbridos aplicados a audio: estudo comparativo com amplificadores classe DAudio hybrid converters: comparative study with class D amplifiersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisPinheiro, José Reneshttp://lattes.cnpq.br/2333794966860226Bisogno, Fábio Eckehttp://lattes.cnpq.br/6267716868501584Campos, Maurício dehttp://lattes.cnpq.br/7207601062237405http://lattes.cnpq.br/6253891623612532Frantz, Guilherme Weber3004000000076005979e88f-0899-4b78-afd6-cb650a3ececd8afe2266-4aeb-4781-994a-46b0edd8ea74cfb26d29-216d-464a-9cb8-9dad44d194b8a1c1d69b-261f-4a01-9b79-22850fa56adereponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGEE_2019_FRANTZ_GUILHERME.pdfDIS_PPGEE_2019_FRANTZ_GUILHERME.pdfDissertação de Mestradoapplication/pdf3621151http://repositorio.ufsm.br/bitstream/1/19783/1/DIS_PPGEE_2019_FRANTZ_GUILHERME.pdf38749be4e2e73a66cfc6ebbd4c4c4bbeMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D |
dc.title.alternative.eng.fl_str_mv |
Audio hybrid converters: comparative study with class D amplifiers |
title |
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D |
spellingShingle |
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D Frantz, Guilherme Weber Amplificador classe-D Amplificador linear Amplificador híbrido Eficiência THD Class-D amplifier Linear amplifier Hybrid amplifier Efficiency CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
title_short |
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D |
title_full |
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D |
title_fullStr |
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D |
title_full_unstemmed |
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D |
title_sort |
Conversores híbridos aplicados a audio: estudo comparativo com amplificadores classe D |
author |
Frantz, Guilherme Weber |
author_facet |
Frantz, Guilherme Weber |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Pinheiro, José Renes |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2333794966860226 |
dc.contributor.referee1.fl_str_mv |
Bisogno, Fábio Ecke |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/6267716868501584 |
dc.contributor.referee2.fl_str_mv |
Campos, Maurício de |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/7207601062237405 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6253891623612532 |
dc.contributor.author.fl_str_mv |
Frantz, Guilherme Weber |
contributor_str_mv |
Pinheiro, José Renes Bisogno, Fábio Ecke Campos, Maurício de |
dc.subject.por.fl_str_mv |
Amplificador classe-D Amplificador linear Amplificador híbrido Eficiência THD |
topic |
Amplificador classe-D Amplificador linear Amplificador híbrido Eficiência THD Class-D amplifier Linear amplifier Hybrid amplifier Efficiency CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
dc.subject.eng.fl_str_mv |
Class-D amplifier Linear amplifier Hybrid amplifier Efficiency |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA |
description |
The convergence of knowledge related to mechanics, electronics and music has resulted in the development of a series of audio devices. Initially, signal amplifiers were developed working in linear region. Due to the efficiency limitations of this form of amplification, the concept of switched amplifiers with a theoretical efficiency of 100% was introduced. However, the high frequencies inherent in its operation add distortion, interference and worsening dynamic response. In order to unite the advantages of both forms of amplification, hybrid amplifiers emerged. The following work aims to propose a hybrid topology of audio signal amplification, called Double Half Bridge + Class AB. To this end, a literature review of the different forms of amplification is carried out, following the design of Class-D amplifier and a Hybrid amplifier, comparing their distortion and efficiency results, aiming to prove the sum of the advantages of the topologies. Both circuits are experimentally tested, resulting in design validation. The hybrid amplifier performed 90% efficiency: more than the theoretical limit of linear amplification (78.5%) and less than the designed Class-D performance (96%). The harmonic distortion of the hybrid circuit remained lower than the switching due to the output power, reaching a minimum value of 0.05%. It is concluded that the amplifier was successful in adding the advantages of both topologies. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019-09-13 |
dc.date.accessioned.fl_str_mv |
2020-03-09T21:30:53Z |
dc.date.available.fl_str_mv |
2020-03-09T21:30:53Z |
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/1/19783 |
url |
http://repositorio.ufsm.br/handle/1/19783 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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300400000007 |
dc.relation.confidence.fl_str_mv |
600 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Tecnologia |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Elétrica |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Engenharia Elétrica |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Tecnologia |
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