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Article: A comparative study of carrier-frequency modulation techniques for conducted EMI suppression in PWM converters

TitleA comparative study of carrier-frequency modulation techniques for conducted EMI suppression in PWM converters
Authors
KeywordsDC-DC power conversion
Power electronics
Pulsewidth modulation
Random switching techniques
Switching circuits
Issue Date2002
PublisherI E E E. The Journal's web site is located at http://www.ewh.ieee.org/soc/ies/ties/index.html
Citation
Ieee Transactions On Industrial Electronics, 2002, v. 49 n. 3, p. 618-627 How to Cite?
AbstractA rigorous mathematical analysis and a comparative study of carrier-frequency modulation (CFM) techniques for the conducted electromagnetic interference (EMI) suppression in pulsewidth-modulated converters is presented. CFM techniques dither the switching period with a small amplitude variation around the nominal value, so that the harmonic power is redistributed over the spectrum of concern. Two types of dithering signals, including the periodic and random signals, are investigated in this paper. The operational characteristics as well as the input and output power spectra of the converters with the two modulating signals are compared. In particular, their characteristics in the low- and high-frequency harmonic power redistribution will be depicted. It is shown that random CFM (RCFM) gives a more effective way to disperse the harmonics around the switching frequency than the periodic CFM (PCFM) with the same frequency deviation. However, RCFM introduces higher low-frequency harmonics than the PCFM at the converter output. Furthermore, effects of the resolution filter bandwidth in the electromagnetic compatibility analyzer on conducted EMI measurement is discussed. The validity of the analyses is confirmed experimentally by using a dc/dc buck converter operating in continuous conduction mode.
Persistent Identifierhttp://hdl.handle.net/10722/136800
ISSN
2015 Impact Factor: 6.383
2015 SCImago Journal Rankings: 3.285
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTse, KKen_HK
dc.contributor.authorChung, HSHen_HK
dc.contributor.authorHui, SYRen_HK
dc.contributor.authorSo, HCen_HK
dc.date.accessioned2011-07-29T02:12:43Z-
dc.date.available2011-07-29T02:12:43Z-
dc.date.issued2002en_HK
dc.identifier.citationIeee Transactions On Industrial Electronics, 2002, v. 49 n. 3, p. 618-627en_HK
dc.identifier.issn0278-0046en_HK
dc.identifier.urihttp://hdl.handle.net/10722/136800-
dc.description.abstractA rigorous mathematical analysis and a comparative study of carrier-frequency modulation (CFM) techniques for the conducted electromagnetic interference (EMI) suppression in pulsewidth-modulated converters is presented. CFM techniques dither the switching period with a small amplitude variation around the nominal value, so that the harmonic power is redistributed over the spectrum of concern. Two types of dithering signals, including the periodic and random signals, are investigated in this paper. The operational characteristics as well as the input and output power spectra of the converters with the two modulating signals are compared. In particular, their characteristics in the low- and high-frequency harmonic power redistribution will be depicted. It is shown that random CFM (RCFM) gives a more effective way to disperse the harmonics around the switching frequency than the periodic CFM (PCFM) with the same frequency deviation. However, RCFM introduces higher low-frequency harmonics than the PCFM at the converter output. Furthermore, effects of the resolution filter bandwidth in the electromagnetic compatibility analyzer on conducted EMI measurement is discussed. The validity of the analyses is confirmed experimentally by using a dc/dc buck converter operating in continuous conduction mode.en_HK
dc.languageengen_US
dc.publisherI E E E. The Journal's web site is located at http://www.ewh.ieee.org/soc/ies/ties/index.htmlen_HK
dc.relation.ispartofIEEE Transactions on Industrial Electronicsen_HK
dc.subjectDC-DC power conversionen_HK
dc.subjectPower electronicsen_HK
dc.subjectPulsewidth modulationen_HK
dc.subjectRandom switching techniquesen_HK
dc.subjectSwitching circuitsen_HK
dc.titleA comparative study of carrier-frequency modulation techniques for conducted EMI suppression in PWM convertersen_HK
dc.typeArticleen_HK
dc.identifier.emailHui, SYR:ronhui@eee.hku.hken_HK
dc.identifier.authorityHui, SYR=rp01510en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/TIE.2002.1005389en_HK
dc.identifier.scopuseid_2-s2.0-0036610402en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036610402&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume49en_HK
dc.identifier.issue3en_HK
dc.identifier.spage618en_HK
dc.identifier.epage627en_HK
dc.identifier.isiWOS:000175970100014-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTse, KK=7102609811en_HK
dc.identifier.scopusauthoridChung, HSH=7404007467en_HK
dc.identifier.scopusauthoridHui, SYR=7202831744en_HK
dc.identifier.scopusauthoridSo, HC=7102300029en_HK

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