Proposed thermal metric for assessment of cooling systems of LED lighting products

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

As the operating temperature of a LED lighting product increases, quite a few performance parameters experience a short-term and recoverable shift. With increasing operating temperature of a LED lighting product, forward voltage reduces, luminous flux reduces, and the color characteristics change from the desired characteristics. Furthermore, maximum junction temperature of the LEDs in the lighting product must not be exceeded. Exceeding the maximum temperature, as specified by the manufacturer in the product datasheet, may permanently damage the lighting product and cause irreversible shifts in product performance. In this work the concept of thermal characterization parameter is proposed to assess to quality of the cooling system in a LED lighting product. Currently, internationally there is no well established measurement technique or standard for estimating the junction temperature of LEDs in a market ready luminaire. Also there isn't any well established method for assessing the quality of the cooling system of a LED luminaire. This work proposes a thermal metric relating the junction and the heat-sink temperatures to estimate the operating junction temperature as well as the quality assessment of the LED luminaire. Findings of the thermal testing on a LED down light are presented in this paper.

Original languageEnglish
Title of host publicationProceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages13-16
Number of pages4
ISBN (Electronic)9781479965465
DOIs
Publication statusPublished - 10-03-2014
Event2014 International Conference on Circuits, Communication, Control and Computing, I4C 2014 - Bangalore, India
Duration: 21-11-201422-11-2014

Conference

Conference2014 International Conference on Circuits, Communication, Control and Computing, I4C 2014
CountryIndia
CityBangalore
Period21-11-1422-11-14

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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