Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/151315 |
Resumo: | The growing environmental concerns to reduce global warming caused by the high levels of CO2 expelled to the atmosphere have played an important role in the electrifi- cation of combustion machines. Following this trend, superconducting machines have proved to be an interesting option, because they allow a higher current density. How- ever, the superconducting compounds require cryogenic operating temperatures. This becomes a problem, because, during its working, the machine operation temperature tends to be increased, heat up due to the losses. With that, the losses study becomes a relevant topic to be studied. In this work, a partially superconducting machine will be analyzed, through an elec- tromagnetic, thermal, and structural finite element simulation of its conventional stator. The superconducting electrical machine studied is an axial flux machine with a disc rotor made of second-generation high-temperature superconducting (2G HTS) strips and two ferromagnetic conventional semi-stators. This study is focused on the losses of these last ones because the superconducting strips have minimal losses compared to the semi- stators ones. It is concluded that the semi-stators losses are inversely proportional to the pole number and that the stator lamination typology with fewer losses is circularly laminated. |
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Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motorsuperconductivityaxial flux machinessuperconducting machineselectromagnetic lossesthermal lossesstructural analysisDomínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e InformáticaThe growing environmental concerns to reduce global warming caused by the high levels of CO2 expelled to the atmosphere have played an important role in the electrifi- cation of combustion machines. Following this trend, superconducting machines have proved to be an interesting option, because they allow a higher current density. How- ever, the superconducting compounds require cryogenic operating temperatures. This becomes a problem, because, during its working, the machine operation temperature tends to be increased, heat up due to the losses. With that, the losses study becomes a relevant topic to be studied. In this work, a partially superconducting machine will be analyzed, through an elec- tromagnetic, thermal, and structural finite element simulation of its conventional stator. The superconducting electrical machine studied is an axial flux machine with a disc rotor made of second-generation high-temperature superconducting (2G HTS) strips and two ferromagnetic conventional semi-stators. This study is focused on the losses of these last ones because the superconducting strips have minimal losses compared to the semi- stators ones. It is concluded that the semi-stators losses are inversely proportional to the pole number and that the stator lamination typology with fewer losses is circularly laminated.As crescentes preocupações com o meio ambiente com vista à diminuição do aque- cimento global causado pelas altas taxas de CO2 expelidos para a atmosfera, têm tido um papel importante na eletrificação de máquinas anteriormente predominantemente de combustão. Seguindo esta tendência, as máquinas supercondutoras revelaram-se uma opção interessante, pois possibilitam uma densidade de corrente superior. No entanto, os materiais supercondutores requerem temperaturas criogénicas. Isto torna-se um pro- blema, pois durante o seu funcionamento a máquina tende a aquecer devido às perdas. Com isto, o estudo de perdas torna-se um tópico relevante de ser estudado. Neste trabalho, será alvo de estudo uma máquina parcialmente supercondutora atra- vés de uma análise de elementos finitos no plano eletromagnético, térmico e estrutural do seu estator convencional. A máquina elétrica supercondutora analisada é de fluxo axial com um rotor em disco constituído por fitas supercondutoras de alta temperatura de segunda geração (2G SAT) e dois semi-estatores ferromagnéticos convencionais. Este estudo é apenas concentrado nas perdas destes últimos, pois as fitas supercondutoras as perdas são mínimas compara- tivamente com as dos semi-estatores. É concluido que as perdas no semi-estatores são inversamente proporcionais ao nú- mero de pólos e que a topologia de laminação do estator com menores perdas é a circular- mente laminada.Oliveira, RobertoPina, JoãoRUNGregório, Fábio José da Encarnação2023-03-28T13:57:46Z2022-062022-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/151315enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:33:40Zoai:run.unl.pt:10362/151315Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:54:30.476018Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor |
title |
Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor |
spellingShingle |
Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor Gregório, Fábio José da Encarnação superconductivity axial flux machines superconducting machines electromagnetic losses thermal losses structural analysis Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática |
title_short |
Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor |
title_full |
Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor |
title_fullStr |
Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor |
title_full_unstemmed |
Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor |
title_sort |
Thermoelectric-Structural Analysis of an Axial Flux Superconducting Motor |
author |
Gregório, Fábio José da Encarnação |
author_facet |
Gregório, Fábio José da Encarnação |
author_role |
author |
dc.contributor.none.fl_str_mv |
Oliveira, Roberto Pina, João RUN |
dc.contributor.author.fl_str_mv |
Gregório, Fábio José da Encarnação |
dc.subject.por.fl_str_mv |
superconductivity axial flux machines superconducting machines electromagnetic losses thermal losses structural analysis Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática |
topic |
superconductivity axial flux machines superconducting machines electromagnetic losses thermal losses structural analysis Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática |
description |
The growing environmental concerns to reduce global warming caused by the high levels of CO2 expelled to the atmosphere have played an important role in the electrifi- cation of combustion machines. Following this trend, superconducting machines have proved to be an interesting option, because they allow a higher current density. How- ever, the superconducting compounds require cryogenic operating temperatures. This becomes a problem, because, during its working, the machine operation temperature tends to be increased, heat up due to the losses. With that, the losses study becomes a relevant topic to be studied. In this work, a partially superconducting machine will be analyzed, through an elec- tromagnetic, thermal, and structural finite element simulation of its conventional stator. The superconducting electrical machine studied is an axial flux machine with a disc rotor made of second-generation high-temperature superconducting (2G HTS) strips and two ferromagnetic conventional semi-stators. This study is focused on the losses of these last ones because the superconducting strips have minimal losses compared to the semi- stators ones. It is concluded that the semi-stators losses are inversely proportional to the pole number and that the stator lamination typology with fewer losses is circularly laminated. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-06 2022-06-01T00:00:00Z 2023-03-28T13:57:46Z |
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://hdl.handle.net/10362/151315 |
url |
http://hdl.handle.net/10362/151315 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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