CAJ | 학술논문

提出了一种新型无桥Boost PFC电路,该电路通过在2nd Dual Boost PFC（2ndDBPFC）的基础上增加两条耦合支路来实现升压二极管的自然关断和开关管的ZCS,大幅度提高了整机的效率。本文详细分析了该变换器的工作原理,讨论了实现开关管ZCS和升压二极管自然关断的条件,一台300W的实验样机验证了理论分析的正确性。由于DB PFC的输入母线直接与电感相连,导致很大的EMI,本文的新型无桥Boost PFC电路很好地解决了EMI的难题,Saber仿真结果表明该电路与传统Boost PFC电路的共模干扰几乎相等。
제출료일충신형무교Boost PFC전로,해전로통과재2nd Dual Boost PFC（2ndDBPFC）적기출상증가량조우합지로래실현승압이겁관적자연관단화개관관적ZCS,대폭도제고료정궤적효솔。본문상세분석료해변환기적공작원리,토론료실현개관관ZCS화승압이겁관자연관단적조건,일태300W적실험양궤험증료이론분석적정학성。유우DB PFC적수입모선직접여전감상련,도치흔대적EMI,본문적신형무교Boost PFC전로흔호지해결료EMI적난제,Saber방진결과표명해전로여전통Boost PFC전로적공모간우궤호상등。
A bridgeless boost rectifier with low conduction losses and reduced diode reverse-recovery problems is proposed for power-factor correction.The proposed boost rectifier can reduce the conduction losses and alleviate the diode reverse-recovery problems by using a coupled inductor and two additional diodes.A detailed analysis of the proposed boost rectifier is presented.Experimental results for a 300W prototype are also discussed to show the performance of the proposed boost rectifier.Dual Boost PFC（DBPFC） by nature brings higher EMI noise,the proposed boost rectifier can solve the problem very well.Saber simulation is performed to validate the EMI model and analysis,and it shows the same level with traditional Boost PFC.