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dc.contributor.authorHuang, Bin-Juine
dc.contributor.authorChen, Chun-Wei
dc.contributor.authorOng, Chin-Dian
dc.contributor.authorDu, Bo-Han
dc.contributor.authorHsu, Po-Chien
dc.date.accessioned2016-02-25T12:59:34Z
dc.date.available2016-02-25T12:59:34Z
dc.date.issued2013-01
dc.identifier.citationHuang B-J, Chen C-W, Ong C-D, Du B-H, Hsu P-C (2013) Development of constant-power driving control for light-emitting-diode (LED) luminaire. Applied Thermal Engineering 50: 645–651. Available: http://dx.doi.org/10.1016/j.applthermaleng.2012.07.030.
dc.identifier.issn1359-4311
dc.identifier.doi10.1016/j.applthermaleng.2012.07.030
dc.identifier.urihttp://hdl.handle.net/10754/597961
dc.description.abstractThe illumination of an LED may be affected by operating temperature even under constant-current condition. A constant-power driving technique is proposed in the present study for LED luminaire. A linear system dynamics model of LED luminaire is first derived and used in the design of the feedback control system. The PI controller was designed and tuned taking into account the control accuracy and robust properties with respect to plant uncertainty and variation of operating conditions. The control system was implemented on a microprocessor and used to control a 150W LED luminaire. The test result shows that the feedback system accurately controls the input power of LED luminaire to within 1.3 per cent error. As the ambient temperature changes from 0 to 40 °C, the LED illumination varies slightly (-1.7%) for constant-power driving, as compared to that of constant-current driving (-12%) and constant-voltage driving (+50%). The constant-power driving has revealed advantage in stabilizing the illumination of LED under large temperature variation. © 2012 Elsevier Ltd. All rights reserved.
dc.description.sponsorshipThis publication is based in part on work supported by Energy Bureau, Ministry of Economic Affairs, Taiwan, and Award No. KUK-C1-014-12, made by King Abdullah University of Science and Technology (KAUST), Saudi Arabia.
dc.publisherElsevier BV
dc.subjectConstant-power driving LED
dc.subjectLED control
dc.subjectLED driving
dc.subjectLED lighting
dc.subjectLED lighting control
dc.titleDevelopment of constant-power driving control for light-emitting-diode (LED) luminaire
dc.typeArticle
dc.identifier.journalApplied Thermal Engineering
dc.contributor.institutionNational Taiwan University, Taipei, Taiwan
kaust.grant.numberKUK-C1-014-12


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