Journal of Electrical Engineering and Technology

  • 제6권1호
  • /
  • Pages.104-110
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  • 2011
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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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)
  • 투고 : 2010.06.07
  • 심사 : 2010.11.02
  • 발행 : 2011.01.01
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초록

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.

키워드

참고문헌

  1. 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.
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  8. 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. https://doi.org/10.5370/JEET.2010.5.1.171
  9. 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. https://doi.org/10.5370/JEET.2006.1.1.063
  10. 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. https://doi.org/10.5370/JEET.2010.5.2.290
  11. 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. https://doi.org/10.6113/JPE.2010.10.2.115

피인용 문헌

  1. Adaptive Current Control of Power LEDs Using Half-Bridge LLC Resonant Converter vol.27, pp.4, 2013, https://doi.org/10.5207/JIEIE.2013.27.4.048