지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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Recently, the LED(Light Emitting Diode) is expected to replace conventional lamps including incandescent, halogen and fluorescent lamps for some general illumination application, due to some obvious features such as high luminous efficiency, safety, long life, environment-friendly characteristics and so on. To drive the LED, a single stage PFC(Power Factor Correction) flyback converter has been adopted to satisfy the isolation, PFC and low cost. The conventional flyback LED driver has the serious disadvantage of high 120Hz output current ripple caused by the PFC operation. To overcome this drawback, a new PFC flyback with low 120Hz output current ripple is proposed in this paper. It is composed of 2 power stages, the DCM(Discontinuous Conduction Mode) flyback converter for PFC and BCM(Boundary Conduction Mode) boost converter for tightly regulated LED current. Since the link capacitor is located in the secondary side, its voltage stress is small. Moreover, since the driver is composed of 2 power stages, small output filter and link capacitor can be used. Especially, since the flyback is operated at DCM, the PFC can be automatically obtained and thus, an additional PFC IC is not necessary. Therefore, only one control IC for BCM boost converter is required. To confirm the validity of the proposed converter, theoretical analysis and experimental results from a prototype of 24W LED driver are presented.
목차
Abstract
1. 서론
2. 기존 조명용 LED 구동 회로
3. 제안된 LED 구동 회로
4. 모의실험 및 실험 결과
5. 결론
References
참고문헌 (7)
참고문헌 신청
1. [학술대회논문] - K. Zhou / 2008 / Quasi-Active Power Factor Correction Circuit for HB LED Driver / IEEE Trans. On power electronics 23 (3)
2. [학술대회논문] - J.Y. Tsao / 2004 / Solid-state lighting : lamps, chips and materials for tomorrow / IEEE Circuits Devices Mag 20 (3) : 28 ~ 37
3. [기타자료] - Electromagnetic Compatibility(EMC) / 2001 / Part 3-2 : Limits - Limits for harmonic current emissions / International Standard IEC61000-3-2
4. [학술대회논문] - T. Komine / 2004 / Fundamental analysis for visible-light communication system using LED lights / IEEE Trans. on Consumer Electronics 50 (1) : 100 ~ 107
5. [학술대회논문] - T. F. Pan / 2007 / An I,proved single-stage Flyback PFC converter for high-luminance lighting LED lamps / The 8th International Conference on Electronic Measurement and Instruments 4 : 212 ~ 215
2. [학술대회논문] - J.Y. Tsao / 2004 / Solid-state lighting : lamps, chips and materials for tomorrow / IEEE Circuits Devices Mag 20 (3) : 28 ~ 37
3. [기타자료] - Electromagnetic Compatibility(EMC) / 2001 / Part 3-2 : Limits - Limits for harmonic current emissions / International Standard IEC61000-3-2
4. [학술대회논문] - T. Komine / 2004 / Fundamental analysis for visible-light communication system using LED lights / IEEE Trans. on Consumer Electronics 50 (1) : 100 ~ 107
5. [학술대회논문] - T. F. Pan / 2007 / An I,proved single-stage Flyback PFC converter for high-luminance lighting LED lamps / The 8th International Conference on Electronic Measurement and Instruments 4 : 212 ~ 215
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