Improving the signal data acquisition in condition monitoring of electrical machines

Detalhes bibliográficos
Autor(a) principal: Costa, Fernando Ferreira
Data de Publicação: 2004
Outros Autores: Almeida, Luiz Alberto Luz de, Naidu, S. R., Member, Senior, Braga-Filho, E. R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/7199
Resumo: p. 1015-1019
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spelling Costa, Fernando FerreiraAlmeida, Luiz Alberto Luz deNaidu, S. R.Member, SeniorBraga-Filho, E. R.Costa, Fernando FerreiraAlmeida, Luiz Alberto Luz deNaidu, S. R.Member, SeniorBraga-Filho, E. R.2012-11-14T11:25:04Z20040018-9456http://www.repositorio.ufba.br/ri/handle/ri/7199v. 53, n. 4p. 1015-1019The occurrence of a broken bar in induction machines causes an internal magnetic imbalance, which is reflected in the stator current. This effect may be detected by estimating the spectral signature of the stator current, particularly the sidebands around the fundamental frequency. However, the fundamental 60-Hz amplitude is considerably greater than the sideband amplitude, which usually requires an analog 60-Hz notch filter in the data acquisition system. Analog filters are sensitive to temperature variations, which, in this case, may shift the filter resonance frequency and degrade the desired response. It is proposed in this paper that the analog notch filter may be replaced by a digital/analog cancelling technique based on the recursive discrete-time Fourier transform. The technique is shown to attenuate the fundamental 60-Hz amplitude considerably before A/D conversion, leaving only the sidebands in the current signalSubmitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-11-14T11:25:04Z No. of bitstreams: 1 01315977.pdf: 499148 bytes, checksum: ba50f217a85687af2e47b50bb56b3f44 (MD5)Made available in DSpace on 2012-11-14T11:25:04Z (GMT). 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dc.title.pt_BR.fl_str_mv Improving the signal data acquisition in condition monitoring of electrical machines
dc.title.alternative.pt_BR.fl_str_mv IEEE Transactions on Instrumentation and Measurement
title Improving the signal data acquisition in condition monitoring of electrical machines
spellingShingle Improving the signal data acquisition in condition monitoring of electrical machines
Costa, Fernando Ferreira
Condition monitoring
induction motor
motor current signature analysis (MCSA)
preventive maintenance
title_short Improving the signal data acquisition in condition monitoring of electrical machines
title_full Improving the signal data acquisition in condition monitoring of electrical machines
title_fullStr Improving the signal data acquisition in condition monitoring of electrical machines
title_full_unstemmed Improving the signal data acquisition in condition monitoring of electrical machines
title_sort Improving the signal data acquisition in condition monitoring of electrical machines
author Costa, Fernando Ferreira
author_facet Costa, Fernando Ferreira
Almeida, Luiz Alberto Luz de
Naidu, S. R.
Member, Senior
Braga-Filho, E. R.
author_role author
author2 Almeida, Luiz Alberto Luz de
Naidu, S. R.
Member, Senior
Braga-Filho, E. R.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Costa, Fernando Ferreira
Almeida, Luiz Alberto Luz de
Naidu, S. R.
Member, Senior
Braga-Filho, E. R.
Costa, Fernando Ferreira
Almeida, Luiz Alberto Luz de
Naidu, S. R.
Member, Senior
Braga-Filho, E. R.
dc.subject.por.fl_str_mv Condition monitoring
induction motor
motor current signature analysis (MCSA)
preventive maintenance
topic Condition monitoring
induction motor
motor current signature analysis (MCSA)
preventive maintenance
description p. 1015-1019
publishDate 2004
dc.date.issued.fl_str_mv 2004
dc.date.accessioned.fl_str_mv 2012-11-14T11:25:04Z
dc.type.driver.fl_str_mv Artigo de Periódico
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/7199
dc.identifier.issn.none.fl_str_mv 0018-9456
dc.identifier.number.pt_BR.fl_str_mv v. 53, n. 4
identifier_str_mv 0018-9456
v. 53, n. 4
url http://www.repositorio.ufba.br/ri/handle/ri/7199
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
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dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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