Design and optimization of a DC-DC converter for LEDs lighting applications

Bouslimi, Lotfi; Bachouch, Latifa; Amraoui, Lilia El; Zissis, Georges

doi:10.1109/peds44367.2019.8998958

Cited by 3 publications

(1 citation statement)

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“…We supply each LED with 280 mA in order to determine the amount of LEDs required for each family. This current value results from the 200 W LED luminary target-power of our future Buck power supply, which is limited to an output current of 1.4 A, according to a former survey work performed at the EI & ICT ENICarthage laboratory [76][77][78]. The corresponding supply output voltage is 143 V. We need to verify that this new current value does not bring any significant drift on the target spectrum.…”

Section: Modeling Light Distribution Of Monochromatic Ledmentioning

confidence: 99%

An Approach for Designing Mixed Light-Emitting Diodes to Match Greenhouse Plant Absorption Spectra

et al. 2021

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We report a methodological approach for simulating luminary output radiation, which is achieved by mixing light-emitting diodes (LEDs) in order to match any plant absorption spectrum. Various recorded narrow-band LED spectra of different colors were first characterized and then fitted with a multi-Gaussian model. An optimizing procedure computed the optimal weighting of the relevant parameters so as to minimize the discrepancy between the combined spectrum and the reference target curve. The particle swarm optimization (PSO) method was applied because it is the most suitable technique for mono-objective situations. Within the useful spectral interval, the worst relative standard deviation between the optimized curve and recorded LED spectral power distribution (SPD) was 3.4%. When combining different LED types, the simulated light output showed that we could limit ourselves to selecting only five colored sources. This work will help us to design an optimized 200W laboratory luminaire with a pulse-width switched-mode power supply.

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Section: Modeling Light Distribution Of Monochromatic Ledmentioning

confidence: 99%