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      • 절연형 DCM DC-DC 컨버터에 관한 연구

        곽동걸(D. K. Kwak),이봉섭(B. S. Lee),김춘삼(C. S. Kim),심재선(J. S. Shim),유주희(J. H. Yu),손재현(J. H. Son) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7

        This paper is study on a high efficiency DC-DC converter of discontinuous conduction mode (DCM) added electric isolation. The converters of high efficiency are generally made that the power losses of the used semiconductor switching devices is minimized. To achieve high efficiency system, the proposed converter is constructed by using a quasi resonant circuit. The control switches using in the converter are operated with soft switching by quasi resonant method. The control switches are operated without increasing their voltage and current stresses by the soft switching technology. The result is that the switching loss is very low and the efficiency of the system is high. The proposed converter is also added electric isolation which is used a pulse transformer. When the power conversion system is required electric isolation, the proposed converter is adopted with the converter system development of high efficiency. The soft switching operation and the system efficiency of the proposed converter are verified by digital simulation and experimental results.

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