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Article: TRIAC dimmable ballast with power equalization

TitleTRIAC dimmable ballast with power equalization
Authors
KeywordsElectronic ballasts
Fluorescent lamps
Issue Date2005
PublisherIEEE
Citation
Ieee Transactions On Power Electronics, 2005, v. 20 n. 6, p. 1441-1449 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 the 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, the dimming operation is simply achieved by pulsewidth 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 linear power equalization scheme is developed so that the dc-link voltage (and hence the lamp power) is in a linear relationship 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 was implemented to verify the experimental measurements with the theoretical predictions. © 2005 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/136973
ISSN
2015 Impact Factor: 4.953
2015 SCImago Journal Rankings: 3.005
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLee, STSen_HK
dc.contributor.authorChung, HSHen_HK
dc.contributor.authorHui, SYen_HK
dc.date.accessioned2011-07-29T02:13:53Z-
dc.date.available2011-07-29T02:13:53Z-
dc.date.issued2005en_HK
dc.identifier.citationIeee Transactions On Power Electronics, 2005, v. 20 n. 6, p. 1441-1449en_HK
dc.identifier.issn0885-8993en_HK
dc.identifier.urihttp://hdl.handle.net/10722/136973-
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 the 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, the dimming operation is simply achieved by pulsewidth 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 linear power equalization scheme is developed so that the dc-link voltage (and hence the lamp power) is in a linear relationship 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 was implemented to verify the experimental measurements with the theoretical predictions. © 2005 IEEE.en_HK
dc.languageengen_US
dc.publisherIEEEen_US
dc.relation.ispartofIEEE Transactions on Power Electronicsen_HK
dc.subjectElectronic ballastsen_HK
dc.subjectFluorescent lampsen_HK
dc.titleTRIAC dimmable ballast with power equalizationen_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/TPEL.2005.857560en_HK
dc.identifier.scopuseid_2-s2.0-28444466224en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-28444466224&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume20en_HK
dc.identifier.issue6en_HK
dc.identifier.spage1441en_HK
dc.identifier.epage1449en_HK
dc.identifier.isiWOS:000233263500025-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLee, STS=35468613000en_HK
dc.identifier.scopusauthoridChung, HSH=7404007467en_HK
dc.identifier.scopusauthoridHui, SY=7202831744en_HK

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