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http://dx.doi.org/10.5370/JEET.2011.6.1.104

Sliding Mode Current Controller Design for Power LEDs  

Kim, Eung-Seok (Department of Control and Instrumentation Engineering, Halla University)
Kim, Cherl-Jin (Department of Electrical and Electronic Engineering, Halla University)
Publication Information
Journal of Electrical Engineering and Technology / v.6, no.1, 2011 , pp. 104-110 More about this Journal
Abstract
High-brightness LED control is required for stable operation, thus the driver and control system must be designed to deliver a constant current to optimize reliability and ensure consistent luminous flux. In this paper, the sliding mode current controller is designed to adjust the illumination density of power LEDs. The controller design model of power LEDs, including its driving circuit, is proposed to realize the dimming control of power LEDs. A buck converter is introduced to drive the power LEDs and reduce the input voltage to a lower level. The sliding mode software controller is implemented to adjust the dimming of power LEDs. The proposed strategy for driving power LEDs is investigated and comparatively studied by experiments.
Keywords
Power LED; Dimming control; Buck converter; Sliding mode control;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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1 E. S. Kim, C. J. Kim, "A Constant Current Controller Design for Power LED Drive," Transactions on KIEE, Vol. 59, No. 3, 2010.   과학기술학회마을
2 Anbukumar Kavithar, Govidarajan Uma, "Resonant Parametric Perturbation method to Control Chaos in Current Mode Controlled DC-DC Buck-Boost Converter," Journal of Electrical Engineering & Technology Vol. 5, No. 1, pp. 171-178, 2010.   DOI   ScienceOn
3 Alireza Khaligh and Ali Emadi, " Stabilizing Control of DC/DC Buck Converters with Constant Power Loads in Continuous Conduction and Discontinuous Conduction Modes Using Digital Power Alignment Technique," Journal of Electrical Engineering & Technology, Vol. 1, No. 1, pp. 63-72, 2006.   DOI   ScienceOn
4 Tuyen D. Nguyen, Hong-Hee Lee and Hoang M. Nguyen, "Adaptive Carrier-based PWM for a Four-Switch Three-Phase Inverter under DC-link Voltage Ripple Conditions," Journal of Electrical Engineering & Technology Vol. 5, No. 2, pp. 290-298, 2010.   DOI   ScienceOn
5 Ehsan Rokhsat-Yazdi, Ali Afzali-Kusha, and Massoud Pedram, "A High-Efficiency, Auto Mode-Hop, Variable-Voltage, Ripple Control Buck Converter," Journal of Power Electronics, Vol. 10, No. 2, pp. 115-124, 2010.   DOI   ScienceOn
6 Tan, F.D. and Middlebrook, R.D., "A Unified Model for Current-Programmed Converters," IEEE Transactions on Power Electronics, Vol. 10, Issue 4, pp. 397-408, 1995.   DOI   ScienceOn
7 R. Sheehan, "Current-Mode Modeling for Peak, Valley and Emulated Control Methods-Reference Guide for Fixed-Frequency, Continuous Conduction-Mode Operation," National Semiconductor, http://www.techonline.com, July, 2007.
8 Sheehan, Robert, "Emulated Current Mode Control for Buck Regulators Using Sample and Hold Technique," Power Electronics Technology Exhibition and Conference, PES02, October, 2006.
9 Ridley, R.B., "A New, Continuous-Time Model for Current Mode Control," IEEE Transactions on Power Electronics, Vol. 6, Issue 2, pp. 271-280, 1991.   DOI   ScienceOn
10 Stephen Bowling, "A Digital Constant Current Power LED Driver," Microchip Technology Inc. 2007.
11 C. J. Kim, N. J. Choi, H. J. Lee, E. S. Kim, "A Digital LED Controller design with Constant Current," KIEE Proceeding, CD PEP 34, Jul., 2009.   과학기술학회마을