Dimmable LED Drivers Operating in Discontinuous Conduction Mode
DOI:
https://doi.org/10.2478/ecce-2013-0004Keywords:
Lighting, LED lamps, controllability, electrical ballasts, DC-DC power convertersAbstract
For the modern smart lighting systems one of the most attractive LED advantages is the dimming possibility. Many researchers and engineers from the field of lighting engineering are trying to find compromise between the efficiency of LED dimming process and the ease of its implementation. This paper also presents an attempt to improve LED dimmer parameters. Comparative investigation of the operation of buck LED drivers in continuous conduction mode and discontinuous conduction mode are discussed here. The first section of paper briefly describes the controllability parameters of the converter in both of these modes. The positive impact of discontinuous conduction mode on the controllability parameters as well as the results of the analytical estimation and the results of associated experiments are summarized at the end of the first section. The second section describes the impact of discontinuous conduction mode on the losses of LED dimmer. The analytical estimation of power losses in the main converter components for both operation modes as well as the summary of the experiments to identify distribution of power losses between these components are presented in this section. Finally, the conclusions about using discontinuous conduction mode for dimmable LED lamps as well as guidelines for the choosing of the components with the most appropriate parameters are drawnReferences
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[8] Tzuen-Lih Chern; Tsung-Mou Huang; Wen-Yuen Wu; Whei-Min Lin; Guan-Shyong Hwang; , "Design of LED driver circuits with single-stage PFC in CCM and DCM," Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on , vol., no., pp.2358-2363, 21-23 June 2011
[9] Alonso, J.M.; Gacio, D.; Garcia, J.; Rico-Secades, M.; Dalla Costa, M.A.; , "Analysis and design of the integrated double buck-boost converter operating in full DCM for LED lighting applications," IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society , vol., no., pp.2889-2894, 7-10 Nov. 2011
[10] Galkin, I.; Milashevski, I.; Teteryonok, O.; , "Comparative study of steady-state performance of LED drivers at different modulation techniques," Compatibility and Power Electronics (CPE), 2011 7th International Conference-Workshop , vol., no., pp.382-387, 1-3 June 2011
[11] Galkin, I.; Teteryonok, O.; Milashevski, I.; , "Comparative estimation of efficiency of LED dimmers at different modulation techniques," Power Electronics and Applications (EPE 2011), Proceedings of the 2011-14th European Conference on , vol., no., pp.1-9, Aug. 30 2011-Sept. 1 2011
[12] Milashevski I., Tetervenok O., Galkin I. “Assessment of Energy Efficient LED Ballasts Based on Their Weight and Size” // Scientific Journal of RTU. 4. series., Power and Electrical Engineering. - 29. vol. (2011), pp 105-112.
[13] Ned Mohan, Tore M. Undeland, William P. Robbins, PowerElectronics: Converters, Applications, and Design. Wiley, 2003, pp.164- 172.
[14] R. W. Erickson, D. Maksimovic, Fundamentals of Power Electronics, 2nd Ed. Springer, 2001, pp. 107-139.
[15] M. Brown, Power Supply Cookbook, Second Edition. Boston: Newnes, 2001, pp. 232-236.
[16] Micrometals. Power Conversion and Line Filter Applications - application note, issue L, 2007, available electronically at http://www.micrometals.com
[17] T. Einchhorn, Estimate Inductor Losses Easily in Power Supply Designs. Power Electronics Technology magazine, April 2005 Issue
[2] Apse-Apsitis, P.; Avotins, A.; Ribickis, L., "Wirelessly controlled led lighting system," Energy Conference and Exhibition (ENERGYCON), 2012 IEEE International , vol., no., pp.952,956, 9-12 Sept. 2012
[3] Seoul Semiconductor, W724C0 - datasheet, 2008, available electronically at www.seoulsemicon.com, last checked on August 13, 2010.
[4] Schmid, M.; Kuebrich, D.; Weiland, M.; Duerbaum, T.; , "Evaluation on the Efficiency of Power LEDs Driven with Currents Typical to Switch Mode Power Supplies," Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE , vol., no., pp.1135-1140, 23-27 Sept. 2007
[5] Suzdalenko, A.; Galkin, I.; , "Choice of power and control hardware for smart LED luminary," Electronics Conference (BEC), 2010 12th Biennial Baltic , vol., no., pp.331-334, 4-6 Oct. 2010
[6] van der Broeck, Heinz; Sauerlander, Georg; Wendt, Matthias; , "Power driver topologies and control schemes for LEDs," Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE , vol., no., pp.1319-1325, Feb. 25 2007-March 1 2007
[7] de Britto, J.R.; Demian, A.E.; de Freitas, L.C.; Farias, V.J.; Coelho, E.A.A.; Vieira, J.B.; , "A proposal of Led Lamp Driver for universal input using Cuk converter," Power Electronics Specialists Conference, 2008. PESC 2008. IEEE , vol., no., pp.2640-2644, 15-19 June 2008
[8] Tzuen-Lih Chern; Tsung-Mou Huang; Wen-Yuen Wu; Whei-Min Lin; Guan-Shyong Hwang; , "Design of LED driver circuits with single-stage PFC in CCM and DCM," Industrial Electronics and Applications (ICIEA), 2011 6th IEEE Conference on , vol., no., pp.2358-2363, 21-23 June 2011
[9] Alonso, J.M.; Gacio, D.; Garcia, J.; Rico-Secades, M.; Dalla Costa, M.A.; , "Analysis and design of the integrated double buck-boost converter operating in full DCM for LED lighting applications," IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society , vol., no., pp.2889-2894, 7-10 Nov. 2011
[10] Galkin, I.; Milashevski, I.; Teteryonok, O.; , "Comparative study of steady-state performance of LED drivers at different modulation techniques," Compatibility and Power Electronics (CPE), 2011 7th International Conference-Workshop , vol., no., pp.382-387, 1-3 June 2011
[11] Galkin, I.; Teteryonok, O.; Milashevski, I.; , "Comparative estimation of efficiency of LED dimmers at different modulation techniques," Power Electronics and Applications (EPE 2011), Proceedings of the 2011-14th European Conference on , vol., no., pp.1-9, Aug. 30 2011-Sept. 1 2011
[12] Milashevski I., Tetervenok O., Galkin I. “Assessment of Energy Efficient LED Ballasts Based on Their Weight and Size” // Scientific Journal of RTU. 4. series., Power and Electrical Engineering. - 29. vol. (2011), pp 105-112.
[13] Ned Mohan, Tore M. Undeland, William P. Robbins, PowerElectronics: Converters, Applications, and Design. Wiley, 2003, pp.164- 172.
[14] R. W. Erickson, D. Maksimovic, Fundamentals of Power Electronics, 2nd Ed. Springer, 2001, pp. 107-139.
[15] M. Brown, Power Supply Cookbook, Second Edition. Boston: Newnes, 2001, pp. 232-236.
[16] Micrometals. Power Conversion and Line Filter Applications - application note, issue L, 2007, available electronically at http://www.micrometals.com
[17] T. Einchhorn, Estimate Inductor Losses Easily in Power Supply Designs. Power Electronics Technology magazine, April 2005 Issue
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2013-04-01
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Copyright (c) 2013 Olegs Tetervenoks, Irena Milashevski (Author)
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Tetervenoks, O., & Milashevski, I. (2013). Dimmable LED Drivers Operating in Discontinuous Conduction Mode. Electrical, Control and Communication Engineering, 2(1), 27-33. https://doi.org/10.2478/ecce-2013-0004
