Understanding reliability of LED luminaires

Shailesh, K R and Kurian, Ciji Pearl and Kini, Savitha G (2017) Understanding reliability of LED luminaires. Lighting Research Technology, 20 (10). ISSN 1477-1535

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The purpose of this paper is to educate both manufacturers and end-users on what constitutes overall reliability of a LED luminaire and reliabilities of individual subsystems, and not to provide specific test results nor any type of general model to forecast LED luminaire reliability. Wide ranges of LED luminaires are available in the market to meet needs of a specific application, hence a potentially wide range of product performance characteristics.The different subsystems in a LED luminaire introduce other potential reliability issues which will be critical in deciding the overall system lifetime.The mutual dependency of subsystems and their interactions make the prospect of characterizing LED luminaire reliability challenging. Best design practices ensure that the overall luminaire reliability will be decided by a small number of subsystems, thus reducing the complexity. In this paper general theory of assessing reliability of optical, electrical and thermal subsystems of a LED luminaire is discussed. How remaining useful lives (RULs) of the subsystems are obtained from their degradation profile and how the RUL of entire system is derived from them is explaine. The theory explained in this paper is useful in designing experiments to express reliability of LED luminaire and its subsystems in terms of RUL.

Item Type: Article
Subjects: Engineering > MIT Manipal > Electrical and Electronics
Depositing User: MIT Library
Date Deposited: 21 Nov 2017 10:15
Last Modified: 21 Nov 2017 10:15
URI: http://eprints.manipal.edu/id/eprint/150006

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