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Article: Analysis and spectral characteristics of a spread-spectrum technique for conducted EMI suppression

TitleAnalysis and spectral characteristics of a spread-spectrum technique for conducted EMI suppression
Authors
Tse, KKChung, HSHHui, SYSo, HC
KeywordsCarrier Communication
Electric Power Supplies To Apparatus
Electromagnetic Wave Interference
Frequency Modulation
Interference Suppression
Pulse Width Modulation
Random Processes
Spectrum Analysis
Spread Spectrum Communication
Switching Circuits
Issue Date2000
PublisherIEEE
Citation
Ieee Transactions On Power Electronics, 2000, v. 15 n. 2, p. 399-410 How to Cite?
DOI: http://dx.doi.org/10.1109/63.838113
AbstractFrequency modulation (FM) and random switching methods have been used for reducing conducted electromagnetic interference (EMI) in power converters. Limited theoretical studies and comparisons of these schemes, however, are available. In this paper, a detailed analysis and the spectral characteristics of a random carrier-frequency (RCF) technique for suppressing conducted EMI in an offline switched-mode power supply are presented. The analysis provides a theoretical platform for studying the characteristics of this random switching scheme. The level of randomness is defined for the RCF scheme and varied in the converter example so that its effects on the power spectra can be demonstrated. Theoretical predictions of the spectral characteristics of this scheme are confirmed with measurements. The RCF scheme has been compared with the standard constant-frequency pulsewidth modulation (PWM) scheme and the FM scheme. Comparisons of their spectral performance show that the RCF scheme has better conducted EMI suppression than the FM and standard PWM schemes.
Persistent Identifierhttp://hdl.handle.net/10722/136822
ISSN
0885-8993
2021 Impact Factor: 5.967
2020 SCImago Journal Rankings: 2.159
ISI Accession Number ID
WOS:000086237000023
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorTse, KKen_HK
dc.contributor.authorChung, HSHen_HK
dc.contributor.authorHui, SYen_HK
dc.contributor.authorSo, HCen_HK
dc.date.accessioned2011-07-29T02:12:54Z-
dc.date.available2011-07-29T02:12:54Z-
dc.date.issued2000en_HK
dc.identifier.citationIeee Transactions On Power Electronics, 2000, v. 15 n. 2, p. 399-410en_HK
dc.identifier.issn0885-8993en_HK
dc.identifier.urihttp://hdl.handle.net/10722/136822-
dc.description.abstractFrequency modulation (FM) and random switching methods have been used for reducing conducted electromagnetic interference (EMI) in power converters. Limited theoretical studies and comparisons of these schemes, however, are available. In this paper, a detailed analysis and the spectral characteristics of a random carrier-frequency (RCF) technique for suppressing conducted EMI in an offline switched-mode power supply are presented. The analysis provides a theoretical platform for studying the characteristics of this random switching scheme. The level of randomness is defined for the RCF scheme and varied in the converter example so that its effects on the power spectra can be demonstrated. Theoretical predictions of the spectral characteristics of this scheme are confirmed with measurements. The RCF scheme has been compared with the standard constant-frequency pulsewidth modulation (PWM) scheme and the FM scheme. Comparisons of their spectral performance show that the RCF scheme has better conducted EMI suppression than the FM and standard PWM schemes.en_HK
dc.languageengen_US
dc.publisherIEEEen_US
dc.relation.ispartofIEEE Transactions on Power Electronicsen_HK
dc.subjectCarrier Communicationen_US
dc.subjectElectric Power Supplies To Apparatusen_US
dc.subjectElectromagnetic Wave Interferenceen_US
dc.subjectFrequency Modulationen_US
dc.subjectInterference Suppressionen_US
dc.subjectPulse Width Modulationen_US
dc.subjectRandom Processesen_US
dc.subjectSpectrum Analysisen_US
dc.subjectSpread Spectrum Communicationen_US
dc.subjectSwitching Circuitsen_US
dc.titleAnalysis and spectral characteristics of a spread-spectrum technique for conducted EMI suppressionen_HK
dc.typeArticleen_HK
dc.identifier.emailHui, SY:ronhui@eee.hku.hken_HK
dc.identifier.authorityHui, SY=rp01510en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/63.838113en_HK
dc.identifier.scopuseid_2-s2.0-0033732790en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033732790&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume15en_HK
dc.identifier.issue2en_HK
dc.identifier.spage399en_HK
dc.identifier.epage410en_HK
dc.identifier.isiWOS:000086237000023-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTse, KK=7102609811en_HK
dc.identifier.scopusauthoridChung, HSH=7404007467en_HK
dc.identifier.scopusauthoridHui, SY=7202831744en_HK
dc.identifier.scopusauthoridSo, HC=7102300029en_HK
dc.identifier.issnl0885-8993-

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