Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes

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

Abstract

In this work the effect of prevailing electrical and thermal conditions on the luminous of efficacy of radiation and wall-plug efficiency of phosphor-converted white LEDs is discussed. For this study, LED manufactured by a reputed lighting company is used. Previous studies have modeled the spectral power distribution of white-pc LEDs as a function of the temperature and electrical characteristics. Results from the study confirm that the nature of spectral power distribution does not change with electrical or thermal conditions thereby giving constant luminous efficacy of radiation. However, it is found from the study that there is significant effect of electro-thermal conditions on the luminous efficacy of the system, with wall-plug efficiency decreasing drastically with increased forward current. However, it must be noted that effect of thermal conditions is comparatively less on the working of white-pc LED compared to the effect of electrical conditions. Spectral power distributions are obtained for different electro-thermal combinations, and they indicate that nature of the spectral power distribution remains same irrespective of the prevailing electro-thermal conditions.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018
EditorsS. K. Niranjan, Veena Desai, Vijay S. Rajpurohit, M N Nadkatti
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages51-55
Number of pages5
ISBN (Electronic)9781538677094
DOIs
Publication statusPublished - 12-2018
Event1st International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018 - Belagavi, India
Duration: 21-12-201823-12-2018

Publication series

NameProceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018

Conference

Conference1st International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018
CountryIndia
CityBelagavi
Period21-12-1823-12-18

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Energy Engineering and Power Technology
  • Communication
  • Computational Mechanics
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Optimization

Cite this

Shailesh, K. R. (2018). Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes. In S. K. Niranjan, V. Desai, V. S. Rajpurohit, & M. N. Nadkatti (Eds.), Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018 (pp. 51-55). [8769139] (Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CTEMS.2018.8769139