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역률개선을 위해 경계전류모드로 동작하는 브리지리스 부스트 컨버터
유병규(Byung-Gyu Yu),이성세(Sung-Se Lee),한상규(Sang-Kyu Han),문건우(Gun-Woo Moon) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
Recently, many nations have released standard such as IEC 1000-3-2 and IEEE 519 which Impose a limit on the harmonic current drawn by equipment connected to AC line in order to prevent the distortion of an AC line.<br/> Among the wide variety of active methods for improving power factor and harmonic distortion, the boost converter is very effective because It has a continuous line current, small choke filter and high power factor. In high power application, however, the bridge diode loss 10 the boost converter has made the efficiency lower and the temperature of the board higher. A new approach without bridge d10de to make the same characteristics of the conventional boost converter has also been developed This paper present the comparisons between the continuous current mode(CCM) operated conventional boost converter and the boundary current mode(BCM) operated the bridgeless boost converter for high efficiency and high power factor