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Article: General n-level driving approach for improving electrical-to-optical energy-conversion efficiency of fast-response saturable lighting devices

TitleGeneral n-level driving approach for improving electrical-to-optical energy-conversion efficiency of fast-response saturable lighting devices
Authors
KeywordsDirect supply
Energy-conversion efficiency
Lighting device
Lighting system
N-level driving approach
Pulsewidth modulation (PWM)
Issue Date2010
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, 2010, v. 57 n. 4, p. 1342-1353 How to Cite?
AbstractPower-electronics interface and the technique of pulsewidth modulation have been the heart of controlling the illumination intensity of lighting devices. It is, however, observed that for some lighting devices, the use of such a methodology leads to a lower energy-conversion efficiency (with a lower light intensity for the same amount of electrical input power) than potentially possible. The main problem is related to the saturable characteristic of the electrical-to-optical energy conversion, which follows that of an exponential characteristic, and the fast nature of this reaction in these lighting devices. This paper presents an in-depth discussion on the phenomenon and offers a solution to the problem. Specifically, it is proposed that an n -level type of driving approach to be adopted in the design and construction of power-electronic drivers for fast-response saturable lighting devices to achieve a quasi-optimal lighting efficacy. The result is energy saving for the same required light illumination. Theoretical proofs and experimental results are provided for verification. The topic of discussion in this paper and the proposed approach are not only applicable to the area of electronic circuits and lighting devices, but also to general controlled systems which comprise components that inherit a saturable and fast-reactive energy conversion characteristic. © 2010 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/148907
ISSN
2015 Impact Factor: 6.383
2015 SCImago Journal Rankings: 3.285
ISI Accession Number ID
Funding AgencyGrant Number
University Grants Committee of the Hong Kong Special Administrative Region
Research Grants Council Earmarked ResearchPolyU 5272/07E
Funding Information:

Manuscript received February 17, 2009; revised July 27, 2009. First published August 18, 2009; current version published March 10, 2010. This work was supported by the University Grants Committee of the Hong Kong Special Administrative Region, Research Grants Council Earmarked Research Grant PolyU 5272/07E.

References

 

DC FieldValueLanguage
dc.contributor.authorTan, SCen_HK
dc.date.accessioned2012-06-20T06:16:15Z-
dc.date.available2012-06-20T06:16:15Z-
dc.date.issued2010en_HK
dc.identifier.citationIeee Transactions On Industrial Electronics, 2010, v. 57 n. 4, p. 1342-1353en_HK
dc.identifier.issn0278-0046en_HK
dc.identifier.urihttp://hdl.handle.net/10722/148907-
dc.description.abstractPower-electronics interface and the technique of pulsewidth modulation have been the heart of controlling the illumination intensity of lighting devices. It is, however, observed that for some lighting devices, the use of such a methodology leads to a lower energy-conversion efficiency (with a lower light intensity for the same amount of electrical input power) than potentially possible. The main problem is related to the saturable characteristic of the electrical-to-optical energy conversion, which follows that of an exponential characteristic, and the fast nature of this reaction in these lighting devices. This paper presents an in-depth discussion on the phenomenon and offers a solution to the problem. Specifically, it is proposed that an n -level type of driving approach to be adopted in the design and construction of power-electronic drivers for fast-response saturable lighting devices to achieve a quasi-optimal lighting efficacy. The result is energy saving for the same required light illumination. Theoretical proofs and experimental results are provided for verification. The topic of discussion in this paper and the proposed approach are not only applicable to the area of electronic circuits and lighting devices, but also to general controlled systems which comprise components that inherit a saturable and fast-reactive energy conversion characteristic. © 2010 IEEE.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.subjectDirect supplyen_HK
dc.subjectEnergy-conversion efficiencyen_HK
dc.subjectLighting deviceen_HK
dc.subjectLighting systemen_HK
dc.subjectN-level driving approachen_HK
dc.subjectPulsewidth modulation (PWM)en_HK
dc.titleGeneral n-level driving approach for improving electrical-to-optical energy-conversion efficiency of fast-response saturable lighting devicesen_HK
dc.typeArticleen_HK
dc.identifier.emailTan, SC:sctan@hku.hken_HK
dc.identifier.authorityTan, SC=rp01606en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/TIE.2009.2029515en_HK
dc.identifier.scopuseid_2-s2.0-77949349382en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77949349382&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume57en_HK
dc.identifier.issue4en_HK
dc.identifier.spage1342en_HK
dc.identifier.epage1353en_HK
dc.identifier.isiWOS:000275369400023-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTan, SC=26642772000en_HK

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