Light & Engineering 26 (1)

Volume 26
Date of publication 03/30/2018
Pages 91-98

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Performance Analysis of Various Types of High Power Light Emitting Diodes. L&E 26 (1) 2018

Articles authors:

Kamalika Ghosh, Debashis Raul

Kamalika Ghosh, Ph. D. (Eng.), Former Director of School of Illumination Science, Engineering and Design, Jadavpur University, India. She has 20 years industrial and 23 years academic experiences. She has published about 100 nos. of papers in National and international journals and conferences. She has supervised several Ph. D. works, reviewed multiple nos. of external Ph. D. thesis, reviewed papers of international journal. She is a Life Fellow of Institution of Engineers, India; Indian Society of Lighting Engineers

Debashis Raul did his B.E. in Electronics & Communication Engineering from West Bengal University of Technology (WBUT). He passed M.E. from Jadavpur University in Electrical Engineering (Illumination Engg.). He has four years teaching experiences as an Assistant Professor at Camellia Institute of Engg. & Technology under WBUT. At present, he is Guest Faculty and Senior Research Fellow (SRF) at School of Illumination Science, Engineering & Design (SISED), Jadavpur University, Kolkata, India

Abstract

Solid state, energy efficient light emitting diode (LED) technology is coming up to replace the conventional gas discharge, etc. light sources. Although declared life of LED is very high but in tropical countries their life time appears very short. This phenomenon is becoming the most drawbacks for usage of LED. To search out the reason for the failure lead to undertake thorough study on the performance of LED specifically on the various environmental conditions. Experimentation was carried out with various types of commercially available high power LED. Failure in tropical countries may be due to effect of temperature. Test results have been noted at various major parts of LEDs, e.g. die, and sink area. Detail analysis of test results at various parts of LEDs in different conditions tends to have some idea about the cause of failure of the LEDs in tropical countries with high ambient temperature and less scope of heat generation by the light source.

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