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Conference Paper: TRIAC dimmable electronic ballast with lamp power equalization

TitleTRIAC dimmable electronic ballast with lamp power equalization
Authors
KeywordsElectronic Ballasts
Flyback converter
Issue Date2004
PublisherIEEE
Citation
Pesc Record - Ieee Annual Power Electronics Specialists Conference, 2004, v. 3, p. 1754-1760 How to Cite?
AbstractA two-stage, two-wire TRIAC dimmable electronic ballast for fluorescent lamps is presented in this paper. It is constructed by using a flyback converter as the input power factor corrector to supply a half-bridge series-resonant parallel-loaded inverter to ballast the lamp. The flyback converter is operated in discontinuous conduction mode so that the filtered input current profile is same as the TRIAC-controlled voltage waveform. The switches in the inverter are switched at a constant frequency slightly higher than the resonant frequency of the resonant tank. Based on the constant average input current characteristics of the inverter, dimming operation is simply achieved by pulse-width-modulation control of the magnitude of the flyback converter output voltage. No synchronization network is required between the input and output stages. In addition, a novel power equalization scheme is developed so that the dc link voltage (and hence the lamp power) is in linear relationships with the firing angle of the TRIAC. The average output voltage of the dimmer controls the equalized flyback converter output voltage. Modeling, analysis, and design of the ballast will be described. A prototype has been implemented to verify the experimental measurements with the theoretical predictions.
Persistent Identifierhttp://hdl.handle.net/10722/136983
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorLee, STSen_HK
dc.contributor.authorChung, HSHen_HK
dc.contributor.authorHui, SYRen_HK
dc.date.accessioned2011-07-29T02:13:56Z-
dc.date.available2011-07-29T02:13:56Z-
dc.date.issued2004en_HK
dc.identifier.citationPesc Record - Ieee Annual Power Electronics Specialists Conference, 2004, v. 3, p. 1754-1760en_HK
dc.identifier.issn0275-9306en_HK
dc.identifier.urihttp://hdl.handle.net/10722/136983-
dc.description.abstractA two-stage, two-wire TRIAC dimmable electronic ballast for fluorescent lamps is presented in this paper. It is constructed by using a flyback converter as the input power factor corrector to supply a half-bridge series-resonant parallel-loaded inverter to ballast the lamp. The flyback converter is operated in discontinuous conduction mode so that the filtered input current profile is same as the TRIAC-controlled voltage waveform. The switches in the inverter are switched at a constant frequency slightly higher than the resonant frequency of the resonant tank. Based on the constant average input current characteristics of the inverter, dimming operation is simply achieved by pulse-width-modulation control of the magnitude of the flyback converter output voltage. No synchronization network is required between the input and output stages. In addition, a novel power equalization scheme is developed so that the dc link voltage (and hence the lamp power) is in linear relationships with the firing angle of the TRIAC. The average output voltage of the dimmer controls the equalized flyback converter output voltage. Modeling, analysis, and design of the ballast will be described. A prototype has been implemented to verify the experimental measurements with the theoretical predictions.en_HK
dc.languageengen_US
dc.publisherIEEEen_US
dc.relation.ispartofPESC Record - IEEE Annual Power Electronics Specialists Conferenceen_HK
dc.subjectElectronic Ballastsen_HK
dc.subjectFlyback converteren_HK
dc.titleTRIAC dimmable electronic ballast with lamp power equalizationen_HK
dc.typeConference_Paperen_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/PESC.2004.1355381en_HK
dc.identifier.scopuseid_2-s2.0-8744280089en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-8744280089&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume3en_HK
dc.identifier.spage1754en_HK
dc.identifier.epage1760en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLee, STS=54781504700en_HK
dc.identifier.scopusauthoridChung, HSH=7404007467en_HK
dc.identifier.scopusauthoridHui, SYR=7202831744en_HK

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