TY - GEN
T1 - Proposed thermal metric for assessment of cooling systems of LED lighting products
AU - Shailesh, K. R.
AU - Kurian, Ciji Pearl
AU - Kini, Savitha G.
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/3/10
Y1 - 2014/3/10
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.
UR - https://www.scopus.com/pages/publications/84946688859
UR - https://www.scopus.com/inward/citedby.url?scp=84946688859&partnerID=8YFLogxK
U2 - 10.1109/CIMCA.2014.7057746
DO - 10.1109/CIMCA.2014.7057746
M3 - Conference contribution
AN - SCOPUS:84946688859
T3 - Proceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014
SP - 13
EP - 16
BT - Proceedings of International Conference on Circuits, Communication, Control and Computing, I4C 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 International Conference on Circuits, Communication, Control and Computing, I4C 2014
Y2 - 21 November 2014 through 22 November 2014
ER -