연속모드 단일단 PFC 플라이백 컨버터의 연구
Study of Single Stage PFC CCM Flyback Converter
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초록
LED 조명은 많은 장점으로 인하여 다양한 분야에서 사용이 점점 증가되고 있다. 특히 플라이백 컨버터는 전력밀도와 구조적 단순성 그리고 소형화가 가능하여 많은 컨버터 설계자들에게 LED 조명용 드라이버로 선택되어지고 있다. 또한 컨버터의직류출력전압을 안정화하기 위하여 저렴한 가격의 정전용량이 큰 전해커패시터를 사용한다. 전해 커패시터를 갖는 전력변환기를 LED 조명시스템에 적용할 경우에 일반적으로 LED의 수명이 짧아지는 결과를 가져온다. 제안하는 논문은 LED 수명연장과 컨버터 출력리플을 감소시키기 위하여 소용량의 필름 커패시터 LC 필터를 컨버터에 적용하였다.
Abstract
Many industrial regions has used and extended the application of LED driver because of many advantage. Specially,due to the simplicity, miniaturization and power density, the flyback converter is selected by a lot of power engineer. Also, the electrolytic capacitor in this converter is used for the constant DC voltage of the converter because of thesufficient capacitance and the economic price. However, because of the characteristics of the electrolytic capacitor andripple currents on the converter. the expected lifetime of the LED driver is more and more shorted. In this paper, asingle-stage CCM PFC flyback converter with the film capacitor is suggested to extended the lifetime of the LEDdriver. In addition, the proposed converter with the LC filter is decreased the ripple current of the converter output.
참고문헌 (10)
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