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Compact Modelling of Electrical, Optical and Thermal Properties of Multi-Colour Power LEDs Operating on a Common PCB

Author

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  • Krzysztof Górecki

    (Department of Marine Electronics, Faculty of Electrical Engineering, Gdynia Maritime University, Morska 83, 81-225 Gdynia, Poland)

  • Przemysław Ptak

    (Department of Marine Electronics, Faculty of Electrical Engineering, Gdynia Maritime University, Morska 83, 81-225 Gdynia, Poland)

Abstract

This paper concerns the problem of modelling electrical, thermal and optical properties of multi-colour power light-emitting diodes (LEDs) situated on a common PCB (Printed Circuit Board). A new form of electro-thermo-optical model of such power LEDs is proposed in the form of a subcircuit for SPICE (Simulation Program with Integrated Circuits Emphasis). With the use of this model, the currents and voltages of the considered devices, their junction temperature and selected radiometric parameters can be calculated, taking into account self-heating phenomena in each LED and mutual thermal couplings between each pair of the considered devices. The form of the formulated model is described, and a manner of parameter estimation is also proposed. The correctness and usefulness of the proposed model are verified experimentally for six power LEDs emitting light of different colours and mounted on an experimental PCB prepared by the producer of the investigated devices. Verification was performed for the investigated diodes operating alone and together. Good agreement between the results of measurements and computations was obtained. It was also proved that the main thermal and optical parameters of the investigated LEDs depend on a dominant wavelength of the emitted light.

Suggested Citation

  • Krzysztof Górecki & Przemysław Ptak, 2021. "Compact Modelling of Electrical, Optical and Thermal Properties of Multi-Colour Power LEDs Operating on a Common PCB," Energies, MDPI, vol. 14(5), pages 1-21, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:5:p:1286-:d:506353
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    References listed on IDEAS

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    1. Anton Alexeev & Grigory Onushkin & Jean-Paul Linnartz & Genevieve Martin, 2019. "Multiple Heat Source Thermal Modeling and Transient Analysis of LEDs," Energies, MDPI, vol. 12(10), pages 1-28, May.
    2. Krzysztof Baran & Antoni Różowicz & Henryk Wachta & Sebastian Różowicz & Damian Mazur, 2019. "Thermal Analysis of the Factors Influencing Junction Temperature of LED Panel Sources," Energies, MDPI, vol. 12(20), pages 1-20, October.
    3. 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.
    4. Krzysztof Baran & Antoni Różowicz & Henryk Wachta & Sebastian Różowicz, 2020. "Modeling of Selected Lighting Parameters of LED Panel," Energies, MDPI, vol. 13(14), pages 1-22, July.
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    Cited by:

    1. Krzysztof Górecki & Przemysław Ptak & Marcin Janicki & Małgorzata Napieralska, 2021. "Comparison of Properties for Selected Experimental Set-Ups Dedicated to Measuring Thermal Parameters of Power LEDs," Energies, MDPI, vol. 14(11), pages 1-14, June.
    2. Przemysław Ptak & Krzysztof Górecki & Jakub Heleniak & Mariusz Orlikowski, 2021. "Investigations of Electrical and Optical Parameters of Some LED Luminaires—A Study Case," Energies, MDPI, vol. 14(6), pages 1-18, March.

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