Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers

Azzam Omer Alfarog; Xiaohui Qu; Huai Wang; Frede Blaabjerg; Zhen Li

doi:10.1109/IECON.2017.8216217

Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers

Azzam Omer Alfarog, Xiaohui Qu, Huai Wang, Frede Blaabjerg, Zhen Li

Office of International Students

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

5 Citations (Scopus)

Abstract

The lifetime prediction of LED lighting system is important to guide the designers to fulfill the design specifications and to benchmark the cost-competitiveness of different lighting technologies. Currently, the lifetime of LED system is usually predicted from the source part and the driver part separately, and then the thermal design is also optimized independently. In practice, the LED source and driver are usually compacted in a single fixture. The heat dissipated from LED source and driver will be coupled together and affect the heat transfer performance, which may degrade the whole system and accelerate the failure. In this paper, a new thermal model concerning the thermal coupling is proposed with Finite Element Method (FEM) simulation for parameter acquirement. The proposed model has a better estimation of the thermal stresses of key components in the LED lamps and therefore an improved lifetime prediction of the LED systems. Moreover, with a given lifetime requirements, this method can be used to guide the thermal design of the LED system. A case study of an outdoor lighting application is then demonstrated by both FEM simulations and experimental verifications in this digest.

Original language	English
Title of host publication	Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1273-1278
Number of pages	6
ISBN (Electronic)	9781538611272
DOIs	https://doi.org/10.1109/IECON.2017.8216217
Publication status	Published - 15 Dec 2017
Event	43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017 - Beijing, China Duration: 29 Oct 2017 → 1 Nov 2017

Publication series

Name	Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society
Volume	2017-January

Conference

Conference	43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017
Country/Territory	China
City	Beijing
Period	29/10/17 → 1/11/17

Keywords

FEM simulation
LED driver
LED source
Lifetime prediction
thermal coupling

Access to Document

10.1109/IECON.2017.8216217

Cite this

Alfarog, A. O., Qu, X., Wang, H., Blaabjerg, F., & Li, Z. (2017). Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (pp. 1273-1278). (Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society; Vol. 2017-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IECON.2017.8216217

Alfarog, Azzam Omer ; Qu, Xiaohui ; Wang, Huai et al. / Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers. Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc., 2017. pp. 1273-1278 (Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society).

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title = "Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers",

abstract = "The lifetime prediction of LED lighting system is important to guide the designers to fulfill the design specifications and to benchmark the cost-competitiveness of different lighting technologies. Currently, the lifetime of LED system is usually predicted from the source part and the driver part separately, and then the thermal design is also optimized independently. In practice, the LED source and driver are usually compacted in a single fixture. The heat dissipated from LED source and driver will be coupled together and affect the heat transfer performance, which may degrade the whole system and accelerate the failure. In this paper, a new thermal model concerning the thermal coupling is proposed with Finite Element Method (FEM) simulation for parameter acquirement. The proposed model has a better estimation of the thermal stresses of key components in the LED lamps and therefore an improved lifetime prediction of the LED systems. Moreover, with a given lifetime requirements, this method can be used to guide the thermal design of the LED system. A case study of an outdoor lighting application is then demonstrated by both FEM simulations and experimental verifications in this digest.",

keywords = "FEM simulation, LED driver, LED source, Lifetime prediction, thermal coupling",

author = "Alfarog, {Azzam Omer} and Xiaohui Qu and Huai Wang and Frede Blaabjerg and Zhen Li",

note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017 ; Conference date: 29-10-2017 Through 01-11-2017",

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doi = "10.1109/IECON.2017.8216217",

language = "English",

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Alfarog, AO, Qu, X, Wang, H, Blaabjerg, F & Li, Z 2017, Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers. in Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society. Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, vol. 2017-January, Institute of Electrical and Electronics Engineers Inc., pp. 1273-1278, 43rd Annual Conference of the IEEE Industrial Electronics Society, IECON 2017, Beijing, China, 29/10/17. https://doi.org/10.1109/IECON.2017.8216217

Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers. / Alfarog, Azzam Omer; Qu, Xiaohui; Wang, Huai et al.
Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc., 2017. p. 1273-1278 (Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society; Vol. 2017-January).

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

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AU - Qu, Xiaohui

AU - Wang, Huai

AU - Blaabjerg, Frede

AU - Li, Zhen

PY - 2017/12/15

Y1 - 2017/12/15

N2 - The lifetime prediction of LED lighting system is important to guide the designers to fulfill the design specifications and to benchmark the cost-competitiveness of different lighting technologies. Currently, the lifetime of LED system is usually predicted from the source part and the driver part separately, and then the thermal design is also optimized independently. In practice, the LED source and driver are usually compacted in a single fixture. The heat dissipated from LED source and driver will be coupled together and affect the heat transfer performance, which may degrade the whole system and accelerate the failure. In this paper, a new thermal model concerning the thermal coupling is proposed with Finite Element Method (FEM) simulation for parameter acquirement. The proposed model has a better estimation of the thermal stresses of key components in the LED lamps and therefore an improved lifetime prediction of the LED systems. Moreover, with a given lifetime requirements, this method can be used to guide the thermal design of the LED system. A case study of an outdoor lighting application is then demonstrated by both FEM simulations and experimental verifications in this digest.

AB - The lifetime prediction of LED lighting system is important to guide the designers to fulfill the design specifications and to benchmark the cost-competitiveness of different lighting technologies. Currently, the lifetime of LED system is usually predicted from the source part and the driver part separately, and then the thermal design is also optimized independently. In practice, the LED source and driver are usually compacted in a single fixture. The heat dissipated from LED source and driver will be coupled together and affect the heat transfer performance, which may degrade the whole system and accelerate the failure. In this paper, a new thermal model concerning the thermal coupling is proposed with Finite Element Method (FEM) simulation for parameter acquirement. The proposed model has a better estimation of the thermal stresses of key components in the LED lamps and therefore an improved lifetime prediction of the LED systems. Moreover, with a given lifetime requirements, this method can be used to guide the thermal design of the LED system. A case study of an outdoor lighting application is then demonstrated by both FEM simulations and experimental verifications in this digest.

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ER -

Alfarog AO, Qu X, Wang H, Blaabjerg F, Li Z. Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc. 2017. p. 1273-1278. (Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society). doi: 10.1109/IECON.2017.8216217

Lifetime prediction of LED lighting systems considering thermal coupling between LED sources and drivers

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Keywords

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