Lifetime Modelling Issues of Power Light Emitting Diodes

János Hegedüs, Gusztáv Hantos and András Poppe
Additional contact information
János Hegedüs: Department of Electron Devices, Budapest University of Technology and Economics, 1117 Budapest, Hungary
Gusztáv Hantos: Department of Electron Devices, Budapest University of Technology and Economics, 1117 Budapest, Hungary
András Poppe: Department of Electron Devices, Budapest University of Technology and Economics, 1117 Budapest, Hungary

Energies, 2020, vol. 13, issue 13, 1-30

Abstract: The advantages of light emitting diodes (LEDs) over previous light sources and their continuous spread in lighting applications is now indisputable. Still, proper modelling of their lifespan offers additional design possibilities, enhanced reliability, and additional energy-saving opportunities. Accurate and rapid multi-physics system level simulations could be performed in Spice compatible environments, revealing the optical, electrical and even the thermal operating parameters, provided, that the compact thermal model of the prevailing luminaire and the appropriate elapsed lifetime dependent multi-domain models of the applied LEDs are available. The work described in this article takes steps in this direction in by extending an existing multi-domain LED model in order to simulate the major effect of the elapsed operating time of LEDs used. Our approach is based on the LM-80-08 testing method, supplemented by additional specific thermal measurements. A detailed description of the TM-21-11 type extrapolation method is provided in this paper along with an extensive overview of the possible aging models that could be used for practice-oriented LED lifetime estimations.

Keywords: power LED measurement and simulation; life testing; reliability testing; LM-80; TM-21; LED lifetime modelling; LED multi-domain modelling; Spice-like modelling of LEDs; lifetime extrapolation and modelling of LEDs (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/13/3370/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/13/3370/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:13:p:3370-:d:378932

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().