A study on the performance characteristics of light emitting diodes from reliability prospective

Lokesh, J; Kini, Savitha G; Mahesha, M.G.; Padmasali, Anjan N.

doi:10.1109/stpec52385.2021.9718666

Cited by 1 publication

(4 citation statements)

References 13 publications

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“…G lamp (s) completely depends on the light source parameters. When the transfer function of the response of the incandescent lamp to voltage fluctuation is obtained in an effective way, the visual response part, independent of the light source, can be separated according to (2). Through light change measurements, the corresponding flicker level can be obtained, making it possible to test the flicker effect of other light sources.…”

Section: Luminous Flux Flicker Modelmentioning

confidence: 99%

“…To realize the luminous flux flicker model, the key is to obtain an accurate visual response G eye (s) to light changes. An interharmonic luminous flux test system based on the frequency sweep principle could be constructed to realize Block 1 of the luminous flux flicker model, obtain the G lamp (s) of the incandescent lamp in the IEC flicker model, and calculate G eye (s) according to (2).…”

Section: Interharmonics-luminous Flux Test Systemmentioning

confidence: 99%

“…flicker model, obtain the Glamp(s) of the incandescent lamp in the IEC flicker model, and calculate Geye(s) according to (2).…”

Section: Interharmonics-luminous Flux Test Systemmentioning

confidence: 99%

“…Lighting is an indispensable part of the normal operation of modern society. With people becoming more concerned with lighting quality, energy conservation, and environmental protection, LED lamps relying on semiconductor technology have gradually replaced incandescent lamps, fluorescent lamps, and compact energy-saving lamps and have become the new mainstream lighting source [1,2]. Presently, the lighting change as a result of voltage fluctuations caused by interharmonics in the power grid is one of the most important factors affecting lighting quality [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Interharmonic Sensitivity Evaluation of LED Lamps Based on the Luminous Flux Flicker Model

Song

Zhu

et al. 2022

Energies

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LED lamps have gradually replaced other lighting sources and have become mainstream in the lighting industry. The research on interharmonic sensitivity affecting their lighting quality cannot be ignored. By deconstructing the lamp-eye-brain module in the International Electrotechnical Commission (IEC) flicker model, a luminous flux flicker model without the constraints of a specific light source was proposed. The test system and corresponding analysis method of the interharmonic-luminous flux transfer coefficient in the model were described in detail, and the accuracy of the test results of the system was verified via incandescent lamp heat balance model simulations. Based on the test results, the conversion method of the interharmonic ratio of LED lamps under the flicker limit based on the interharmonic-flicker limit curve of incandescent lamps was deduced. By testing and comparing the differences in interharmonic-flicker limit curves of different driving types of LED lamps, the experimental evaluation of their sensitivity was completed, and the reference for LED lamp selection, driver design, and compatibility standard formulation in different application scenarios was provided.

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Section: Luminous Flux Flicker Modelmentioning

confidence: 99%

Section: Interharmonics-luminous Flux Test Systemmentioning

confidence: 99%

“…flicker model, obtain the Glamp(s) of the incandescent lamp in the IEC flicker model, and calculate Geye(s) according to (2).…”

Section: Interharmonics-luminous Flux Test Systemmentioning

confidence: 99%