http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
LCD 모니터의 어댑터를 위한 고역률 고효율 PFC AC/DC 컨버터
박경화(K.H.Park),김정은(C.F.Kim),윤명중(M.J.Youn),문건우(G.W.Moon) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11
Many single-stage PFC(power-factor-correction) AC/DC converters suffer from the high link voltage at high input voltage and light load condition. In this paper, to suppress the link voltage, a novel high power factor high efficiency PFC AC/DC converter is proposed using the single controller which generates two gate signals so that one of them IS used for gate signal of the flyback DC/DC converter switch and the other is applied to the Boost PFC stage. A 130W prototype for LCD monitor adapter with universal input (90-265V_rms) and 19.5V 67A output is Implemented to verify the operational principles and performances. The experimental results show that the maximum link voltage stress IS about 450 V at 270Vac input voltage. Moreover, efficiency and power factor are over 84% and 0.95, respectively, under the full load condition.