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Savkova T.N., Кravchanko A.I., Kuharenko S.N., Lukashov V.M., Svintitskij A.V. THE DETERMINATION OF ENERGY AND OPTICAL CHARACTERISTICS OF THE MODEL OF LIGHTING DEVICE UNDER PULSE EXCITATION IN A MATHCAD SOFTWARE ENVIRONMENT LED devices with a pulse mode are increasingly used in lighting technology — strobe lights, projectors, lights, security systems, sensors, pulse devices, etc. Pulsed power supply lets you reduce heat in the p-n junction of the LED, it improves efficiency and service life of the lighting device. There is a method to determine energy and optical characteristics of the LED model. Using lighting device under pulse excitation with proposed Mathcad software environmentallows to determine the current power consumption value of the model, the radiation power and energy efficiency. Measurements of energy and the optical parameters of the lighting device model manufactured by cold-white powerful LED ARPL-3W were made. It was shown that the maximum values of efficiency under pulsed excitation and continuous power for the model is amounted to about 40 %. The efficiency difference in power consumption (nominal mode) with continuous and pulsed excitation power with 50% duty cycle is about 5 %. In a range of wattages to 0,02 W efficiency lighting device model is practically independent of the crystal's active region temperature. The form of pulse supply affects energy efficiency of the LED depending model of lighting device. Exciting trapezoidal shapes of cold white LED triangular pulses makes efficiency lower than exciting those with rectangular shaped pulse. Studied power characteristics have shown a significant effect for the duration of the pump pulse currents exceed 2A efficiency of emitting recombination. Increasing the frequency of the supply current reduces the efficiency of the crystal under the same duration and power of the exciting pulse.Key words: LED, pulse excitation, the average radiation power, energy efficiency.
References:
1. Gafurov, H.G. Zavisimost' jenergeticheskih harakteristik svetodioda ot vremennyh parametrov signala pitanija / H.G. Gafurov, F.H. Gafurov, M. Kajumova// Uchjonye zapiski estestvennye i jekonomicheskie nauki. — 2012. — № 2(21). — P. 20–26.
2. Skripnichenko A. Impul'snoe pitanie svetodiodov Cree XLamp s povy-shennym tokom / A. Skripnichenko // Poluprovodnikovaja svetotehnika. — 2011. — № 1. — P. 16–19.
3. Kartamyshev A.V. Metod vosstanovlenija formy signala dlja sistemy izmerenija parametrov Led: avtoref. dis. kand. tehn. nauk: 23.10.2008 / A.V. Kartamyshev; Sankt-Peterburgskij gos. pol. universitet. — Sankt-Peterburg, 2008. — 18 р.
4. Nitridy gallija, indija i aljuminija — struktury i pribory: materialy 5 Vserossijskoj konferencii, Sankt-Peterburg, izd-vo Politehnicheskij univer.; pod. red. P.K. Kashkarov [i dr.]. — SPb., 2007, — 395р.
5. Nikiforov, S. Osobennosti opredelenija kvantovogo vyhoda svetodiodov na osnove AlGaInN i AlGaInR pri razlichnoj plotnosti toka cherez izluchajushhij kristall / S. Nikiforov, A. Arhipov // Komponenty i tehnologii. — 2008. — № 1. — Р. 82–85.
6. Myshonkov A.B. Issledovanie harakteristik svetodiodnyh istochnikov sveta pri pitanii impul'snym tokov: avtoref. dis. kand. tehn. nauk: 16.05.2012 / A.B. Myshonkov; Mordovskij gos. univer. im. N.P. Ogarjova — Saransk, 2012. — 22 р.
7. Kuzmin V. Pribory dlja izmerenija opticheskih parametrov i harakteristik svetodiodov / V. Kuzmin, V. Antonov, O. Kruglov// Poluprovodnikovaja svetotehnika. — 2010. — № 3, P. 26-30.
8. Svetodiody. Metody izmerenija fotometricheskih harakteristik: GOST R 8.749-2011. — Vved. 01.05.01; — Moskva: Federal'noe agenstvo po tehniche-skomu regulirovaniju i metrologii: Standartinform, 2014. — 14 p.
9.Bakovec, N.V. Metod kalibrovki fotometricheskogo shara / N.V. Bakovec, D.V.Skums, O.B. Tarasova // Metrologija i priborostroenie. — 2014. — № 4. — P. 11-16.
10.Savkova, T.N. Izmerenie jenergii teplovyh poter' moshhnogo svetodiodnogo modulja / T.N. Savkova, A.I. Kravchenko // Vestnik GGTU im. P.O. Suhogo, № 1. — Gomel'. — 2013, P.55–60.
11. Spravochnik po jelektricheskim kondensatoram / Akademija nauk MSSR, otdel jenergeticheskoj kibernetiki; pod. red.: V.V. Ermuratskogo. — Kishenjov.: izd. "Shtinca", 1982. — 308 p.
12. Bessonov, L.A. Teoreticheskie osnovy jelektrotehniki. Jelektricheskie cepi: ucheb. dlja jelektroteh., jenergetich., priborostroit., spec, vuzov.:9-e izd., pererab. i dop. / L.A. Bessonov. –M.: Vysshaja shkola, 1996. — 640p.
13. Mathcad 14 dlja studentov i inzhenerov. Russkaja versija: Valerij Ochkov — Moskva, BHV-Peterburg, 2009 g. — 512 p.
14. Fotometrija impul'snaja. Terminy i opredelenija: GOST 24286-88. — Vved. 01.01.90; — Moskva: Gosudarstvennyj komitet SSSR po standartam: Izdatel'stvo standartov, 1988. –15 p.
About this article
Authors: Kravchenko A.I., Svintitskiy A.V., Savkova T.N., Kuharenko S.N., Lukashov V.M.
Year: 2015
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Editor-in-chief |
Sergey Aleksandrovich MIROSHNIKOV |
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