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Lifetime Modelling Issues of Power Light Emitting Diodes

Author

Listed:
  • 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)

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.

Suggested Citation

  • János Hegedüs & Gusztáv Hantos & András Poppe, 2020. "Lifetime Modelling Issues of Power Light Emitting Diodes," Energies, MDPI, vol. 13(13), pages 1-30, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:13:p:3370-:d:378932
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    References listed on IDEAS

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    1. András Poppe & Gábor Farkas & Lajos Gaál & Gusztáv Hantos & János Hegedüs & Márta Rencz, 2019. "Multi-Domain Modelling of LEDs for Supporting Virtual Prototyping of Luminaires," Energies, MDPI, vol. 12(10), pages 1-32, May.
    2. Genevieve Martin & Christophe Marty & Robin Bornoff & Andras Poppe & Grigory Onushkin & Marta Rencz & Joan Yu, 2019. "Luminaire Digital Design Flow with Multi-Domain Digital Twins of LEDs," Energies, MDPI, vol. 12(12), pages 1-28, June.
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    Cited by:

    1. Marc van der Schans & Joan Yu & Genevieve Martin, 2020. "Digital Luminaire Design Using LED Digital Twins—Accuracy and Reduced Computation Time: A Delphi4LED Methodology," Energies, MDPI, vol. 13(18), pages 1-19, September.
    2. Ram Adhikari & Dawood Beyragh & Majid Pahlevani & David Wood, 2020. "A Numerical and Experimental Study of a Novel Heat Sink Design for Natural Convection Cooling of LED Grow Lights," Energies, MDPI, vol. 13(16), pages 1-19, August.

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