Electrothermal Model for Power LEDs Based on the Equivalent Resistance Concept for LED Driver Design

Adamas-Pérez, Heriberto; Ponce-Silva, Mario; Osorio-Sanchez, R.; Alonso, J.M.

doi:10.1109/ted.2021.3118992

Cited by 4 publications

(4 citation statements)

References 23 publications

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“…Before the measurements, the luminaires were illuminated for at least 100 h according to the Ref. 16 . It was assumed that for all tested luminaires the measurement time is 1 h. Moreover, It has been assumed that for tested luminaires the thermal conditions of the luminaires will stabilize after 1 h. Electrical parameters were measured using a FLUKE 1760 power quality analyzer.…”

Section: Results Of Investigationmentioning

confidence: 99%

Using identification method to modelling short term luminous flux depreciation of LED luminaire to reducing electricity consumption

Sikora

Markiewicz

Korzeniewska

2023

Sci Rep

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Reducing electricity consumption is currently one of the most significant global issues. Luminaires and light sources are characterised by relatively low rated power values. However, due to their high number, they account for a noticeable share of the total volume of electricity consumption. When the LED lamp/luminaire is switched-on, it emits a higher luminous flux and receives more power from the mains supply than when the thermal conditions have stabilized. This phenomenon is called short-term luminous flux depreciation. The lighting design process on photometric data obtained for steady-state operating conditions is based, on once the luminous flux has stabilized. Therefore, it is possible to design the control algorithm of the LED luminaire in such a way as to reduce this phenomenon, which will result in measurable savings of electrical energy. The paper proposes the use of a method to identify the short-term luminous flux depreciation of LED luminaires. The model was then used to simulate the operation of a control algorithm limiting the phenomenon of short-term luminous flux depreciation.

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Section: Results Of Investigationmentioning

confidence: 99%

Using identification method to modelling short term luminous flux depreciation of LED luminaire to reducing electricity consumption

Sikora

Markiewicz

Korzeniewska

2023

Sci Rep

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“…Therefore, it is important to determine their junction temperature for specific operating conditions. This temperature is higher than the ambient temperature due to the self-heating phenomenon and mutual thermal couplings between the devices placed on a common base [13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

“…Many papers have been devoted to the problem of modeling thermal phenomena in power modules [30][31][32] or in LEDs and LED modules, e.g., [8,12,13,25,33,34]. The paper [13] presents a compact thermal model of power LEDs. It has a classic form of an RC network, whose components are determined using the network identification by deconvolution method.…”

Section: Introductionmentioning

confidence: 99%

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Simple Form of Compact Thermal Model of the Large LED Modules

Górecki,

Ptak

2023

Energies

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The paper proposes a simple compact thermal model of a large LED module. This model takes into account self-heating in each of the LEDs contained in such a module and mutual thermal couplings between each pair of these LEDs. It also allows determining the waveforms of the junction temperature of each of the LEDs. In each moment of time, the temperature distributions in the LED module in the form of values of the junction temperature of all the diodes contained in this module are calculated using the proposed model. The developed thermal model has the form of an electric network and it contains a much smaller number of components than thermal models given in the literature. The form of the developed model and the method of determining the values of its parameters as well as the results of calculations and measurements confirming the practical usefulness of this model are presented.

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Continuous Input Current Isolated Resonant LED Driver With Wide Input Voltage Range

Molavi,

Askari,

Farzanehfard

et al. 2024

IEEE Trans. Ind. Electron.

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Electrothermal Model for Power LEDs Based on the Equivalent Resistance Concept for LED Driver Design

Cited by 4 publications

References 23 publications

Using identification method to modelling short term luminous flux depreciation of LED luminaire to reducing electricity consumption

Using identification method to modelling short term luminous flux depreciation of LED luminaire to reducing electricity consumption

Simple Form of Compact Thermal Model of the Large LED Modules

Continuous Input Current Isolated Resonant LED Driver With Wide Input Voltage Range

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