LED 정전류 구동회로의 입력전압 리플 크기에 의한 특성 비교

• 영문명: Characteristic comparisons of the constant current LED driver by the ripple of the input voltage
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 박종연(Park, Chong-Yeun) 전인웅(Jeon, In-Ung) 유진완(Yoo, Jin-Wan) 최영민(Choi, Young-Min)
• 간행물 정보: 『산업기술연구』vol.32, 115~118쪽, 전체 4쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2012.09.30

영문 초록

Recently, there are a lot of papers in order to replace the electrolytic capacitor into the film capacitor in output of PFC(Power Factor Correction). However, the film capacitor, which has capacitance of low values, causes a large ripple voltage in output of PFC. The LED drivers are connected series in the output of PFC and affected by the magnitude of voltage ripple. In this paper, we have compared the fixed frequency method with the variable frequency for the constant-current control and propose the control method to avoid the sub-harmonic oscillation in the variable input voltage. An 80W PFC, using film capacitors instead of electrolytic capacitors, and LED driver has been built and compared the fixed frequency control method with the variable frequency control method

목차

1. 서론

2. 3고조파 주입에 의한 커패시터의 용량 저감 방법

3. LED 제어 방법의 비교

4. 실험 결과

5. 결론

키워드

서브 하모닉 오실레이션 주파수 고정 제어 주파수 가변 제어 sub-harmonic oscillation fixed frequency control variable frequency control