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

K. R. Shailesh; Ciji Pearl Kurian; Savitha G. Kini

doi:10.1109/CIMCA.2014.7057746

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

K. R. Shailesh, Ciji Pearl Kurian, Savitha G. Kini

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Proceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	13-16
Number of pages	4
ISBN (Electronic)	9781479965465
DOIs	https://doi.org/10.1109/CIMCA.2014.7057746
Publication status	Published - 10-03-2014
Event	2014 International Conference on Circuits, Communication, Control and Computing, I4C 2014 - Bangalore, India Duration: 21-11-2014 → 22-11-2014

Conference

Conference	2014 International Conference on Circuits, Communication, Control and Computing, I4C 2014
Country/Territory	India
City	Bangalore
Period	21-11-14 → 22-11-14

All Science Journal Classification (ASJC) codes

Computer Networks and Communications
Electrical and Electronic Engineering

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10.1109/CIMCA.2014.7057746

Cite this

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title = "Proposed thermal metric for assessment of cooling systems of LED lighting products",

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.",

author = "Shailesh, {K. R.} and Kurian, {Ciji Pearl} and Kini, {Savitha G.}",

year = "2014",

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doi = "10.1109/CIMCA.2014.7057746",

language = "English",

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booktitle = "Proceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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note = "2014 International Conference on Circuits, Communication, Control and Computing, I4C 2014 ; Conference date: 21-11-2014 Through 22-11-2014",

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Shailesh, KR , Kurian, CP & Kini, SG 2014, Proposed thermal metric for assessment of cooling systems of LED lighting products. in Proceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014., 7057746, Institute of Electrical and Electronics Engineers Inc., pp. 13-16, 2014 International Conference on Circuits, Communication, Control and Computing, I4C 2014, Bangalore, India, 21-11-14. https://doi.org/10.1109/CIMCA.2014.7057746

Proposed thermal metric for assessment of cooling systems of LED lighting products. / Shailesh, K. R.; Kurian, Ciji Pearl ; Kini, Savitha G.
Proceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 13-16 7057746.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - 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.

AB - 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.

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ER -

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

Abstract

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