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

K. R. Shailesh

doi:10.1109/CTEMS.2018.8769139

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

K. R. Shailesh^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018
Editors	S. K. Niranjan, Veena Desai, Vijay S. Rajpurohit, M N Nadkatti
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	51-55
Number of pages	5
ISBN (Electronic)	9781538677094
DOIs	https://doi.org/10.1109/CTEMS.2018.8769139
Publication status	Published - 12-2018
Event	1st International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018 - Belagavi, India Duration: 21-12-2018 → 23-12-2018

Publication series

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

Conference

Conference	1st International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018
Country/Territory	India
City	Belagavi
Period	21-12-18 → 23-12-18

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

Access to Document

10.1109/CTEMS.2018.8769139

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). Article 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

Shailesh, K. R. / Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes. Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018. editor / S. K. Niranjan ; Veena Desai ; Vijay S. Rajpurohit ; M N Nadkatti. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 51-55 (Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018).

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title = "Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes",

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.",

author = "Shailesh, \{K. R.\}",

year = "2018",

month = dec,

doi = "10.1109/CTEMS.2018.8769139",

language = "English",

series = "Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018",

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booktitle = "Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018",

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note = "1st International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018 ; Conference date: 21-12-2018 Through 23-12-2018",

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Shailesh, KR 2018, Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes. in SK Niranjan, V Desai, VS Rajpurohit & MN Nadkatti (eds), Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018., 8769139, Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018, Institute of Electrical and Electronics Engineers Inc., pp. 51-55, 1st International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018, Belagavi, India, 21-12-18. https://doi.org/10.1109/CTEMS.2018.8769139

Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes. / Shailesh, K. R.
Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018. ed. / S. K. Niranjan; Veena Desai; Vijay S. Rajpurohit; M N Nadkatti. Institute of Electrical and Electronics Engineers Inc., 2018. p. 51-55 8769139 (Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018).

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

TY - GEN

T1 - Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes

AU - Shailesh, K. R.

PY - 2018/12

Y1 - 2018/12

N2 - 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.

AB - 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.

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SP - 51

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BT - Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018

A2 - Niranjan, S. K.

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PB - Institute of Electrical and Electronics Engineers Inc.

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Y2 - 21 December 2018 through 23 December 2018

ER -

Shailesh KR. Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes. In Niranjan SK, Desai V, Rajpurohit VS, Nadkatti MN, editors, Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 51-55. 8769139. (Proceedings of the International Conference on Computational Techniques, Electronics and Mechanical Systems, CTEMS 2018). doi: 10.1109/CTEMS.2018.8769139

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

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