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Article: Dynamic photoelectrothermal theory for light-emitting diode systems

TitleDynamic photoelectrothermal theory for light-emitting diode systems
Authors
KeywordsLight-Emitting Diodes (LEDs)
Lighting Systems
Issue Date2012
PublisherIEEE. The Journal's web site is located at http://www.ewh.ieee.org/soc/ies/ties/index.html
Citation
IEEE Transactions on Industrial Electronics, 2012, v. 59 n. 4, p. 1751-1759 How to Cite?
AbstractThis paper presents a dynamic photoelectrothermal theory for light-emitting diode (LED) systems. In addition to photometric, electrical, and thermal aspects, this theory incorporates the time domain into the generalized equations. A dynamic model for a general LED system is developed for system analysis. This theory highlights the fact that the luminous output of an LED system will decrease with time from the initial operation to the steady state due to the rising temperature of the heat sink and the LED devices. The essential thermal time constants involved in the LED systems are explained. The time factor is critical in understanding how much the luminous output will decrease with time and is essential to the optimal designs of the LED systems that are operated continuously (e.g., general lighting) or momentarily (e.g., traffic lights). Experiments on several LED systems at different time frames have been conducted, and the practical measurements confirm the validity of this theory. © 2011 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/155689
ISSN
2015 Impact Factor: 6.383
2015 SCImago Journal Rankings: 3.285
ISI Accession Number ID
Funding AgencyGrant Number
Centre for Power Electronics, City University of Hong Kong
Funding Information:

Manuscript received August 18, 2010; revised October 19, 2010 and December 8, 2010; accepted December 16, 2010. Date of publication January 28, 2011; date of current version November 1, 2011. This work was supported by the Centre for Power Electronics, City University of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorTao, Xen_US
dc.contributor.authorHui, SYRen_US
dc.date.accessioned2012-08-08T08:34:50Z-
dc.date.available2012-08-08T08:34:50Z-
dc.date.issued2012en_US
dc.identifier.citationIEEE Transactions on Industrial Electronics, 2012, v. 59 n. 4, p. 1751-1759en_US
dc.identifier.issn0278-0046en_US
dc.identifier.urihttp://hdl.handle.net/10722/155689-
dc.description.abstractThis paper presents a dynamic photoelectrothermal theory for light-emitting diode (LED) systems. In addition to photometric, electrical, and thermal aspects, this theory incorporates the time domain into the generalized equations. A dynamic model for a general LED system is developed for system analysis. This theory highlights the fact that the luminous output of an LED system will decrease with time from the initial operation to the steady state due to the rising temperature of the heat sink and the LED devices. The essential thermal time constants involved in the LED systems are explained. The time factor is critical in understanding how much the luminous output will decrease with time and is essential to the optimal designs of the LED systems that are operated continuously (e.g., general lighting) or momentarily (e.g., traffic lights). Experiments on several LED systems at different time frames have been conducted, and the practical measurements confirm the validity of this theory. © 2011 IEEE.en_US
dc.languageengen_US
dc.publisherIEEE. The Journal's web site is located at http://www.ewh.ieee.org/soc/ies/ties/index.htmlen_US
dc.relation.ispartofIEEE Transactions on Industrial Electronicsen_US
dc.rightsIEEE Transactions on Industrial Electronics. Copyright © IEEE-
dc.rights©2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectLight-Emitting Diodes (LEDs)en_US
dc.subjectLighting Systemsen_US
dc.titleDynamic photoelectrothermal theory for light-emitting diode systemsen_US
dc.typeArticleen_US
dc.identifier.emailHui, SYR:ronhui@eee.hku.hken_US
dc.identifier.authorityHui, SYR=rp01510en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1109/TIE.2011.2109341en_US
dc.identifier.scopuseid_2-s2.0-80455156392en_US
dc.identifier.hkuros209249-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80455156392&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume59en_US
dc.identifier.issue4en_US
dc.identifier.spage1751en_US
dc.identifier.epage1759en_US
dc.identifier.isiWOS:000296480700008-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridTao, X=36086850500en_US
dc.identifier.scopusauthoridHui, SYR=7202831744en_US
dc.customcontrol.immutablejt 130328-

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