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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.3
- 수록면
- 555 - 566 (12page)
이용수
초록· 키워드
오류제보하기
A TRIAC dimming LED driver that can control the brightness of LED arrays for a wide range of source voltage variations is proposed in this paper. Unlike conventional PWM LED drivers, the proposed LED driver adopts a TRIAC switch, which inherently guarantees zero current switching and has been proven to be quite reliable over its long lifetime. Unlike previous TRIAC type LED drivers, the proposed LED driver is composed of an LC input filter and a variable switched capacitance, which is modulated by the TRIAC turn-on timing. Thus, the LED power regulation and dimming control, which are done by a volume resistor in the same way as the conventional TRIAC dimmers, can be simultaneously performed by the TRIAC control circuit. Because the proposed LED driver has high efficiency and a long lifetime with a high power factor (PF) and low total harmonic distortion (THD) characteristics, it is quite adequate for industrial lighting applications such as streets, factories, parking garages, and emergency stairs. A simple step-down capacitive power supply circuit composed of passive components only is also proposed, which is quite useful for providing DC power from an AC source without a bulky and heavy transformer. A prototype 60 W LED driver was implemented by the proposed design procedure and verified by simulation and experimental results, where the efficiency, PF, and THD are 92%, 0.94, and 6.3%, respectively. The LED power variation is well mitigated to below ± 2% for 190 V < Vs < 250 V by using the proposed simple control circuit.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. ANALYSIS OF THE PROPOSED TRIAC DIMMING LED DRIVER
Ⅲ. DESIGN OF THE PROPOSED TRIAC DIMMING LED DRIVER
Ⅳ. EXPERIMENTAL VERIFICATIONS
Ⅴ. CONCLUSION
REFERENCES
참고문헌 (46)
참고문헌 신청
1. [학술지(정기간행물)] - M. R. Krames / 2007 / Status and future of high-power light-emitting-diodes for solid-state lighting / Journal of Display Technology 3 (2) : 160 ~ 175
2. [학술지(정기간행물)] - J. Cardesin / 2009 / LED permanent emergency lighting system based on a single magnetic component / IEEE Trans. Power Electron. 24 (5) : 1409 ~ 1416
3. [학술지(정기간행물)] - D. A. Steigerwald / 2002 / Illumination with solid state lighting technology / IEEE J. Sel. Topics Quantum Electron. 8 (2) : 310 ~ 320
4. [학술대회논문] - Matthias Wendt / 2006 / LEDs in real lighting applications: from niche markets to general lighting / IEEE Industry Applications Conference : 2601 ~ 2603
5. [학술지(정기간행물)] - S. Y. (Ron) Hui / 2009 / A general photo-electro-thermal theory for light emitting diode (LED)systems / IEEE Trans. Power Electron. 24 (8) : 1967 ~ 1976
2. [학술지(정기간행물)] - J. Cardesin / 2009 / LED permanent emergency lighting system based on a single magnetic component / IEEE Trans. Power Electron. 24 (5) : 1409 ~ 1416
3. [학술지(정기간행물)] - D. A. Steigerwald / 2002 / Illumination with solid state lighting technology / IEEE J. Sel. Topics Quantum Electron. 8 (2) : 310 ~ 320
4. [학술대회논문] - Matthias Wendt / 2006 / LEDs in real lighting applications: from niche markets to general lighting / IEEE Industry Applications Conference : 2601 ~ 2603
5. [학술지(정기간행물)] - S. Y. (Ron) Hui / 2009 / A general photo-electro-thermal theory for light emitting diode (LED)systems / IEEE Trans. Power Electron. 24 (8) : 1967 ~ 1976
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