PUBLICATIONS
Paper
[Domestic Journals] Sung-Sik Park, Se-Wan Choi, Woo-Jin Choi and Kyo-Beum Lee, "A Non-isolated DC-DC Converter with High Step-up Ratio and Wide ZVS Range," The Transactions of the Korean Institute of Power Electronics, vol. 14, no. 4, pp. 315–322, Aug. 2009.
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In the conventional boost converter, the actual duty cycle is limited as the output voltage increases due to increased voltage and
current stress of the switch and diode and voltage surge caused by diode reverse recovery. In this paper a new non-isolated boost
converter suitable for high gain applications is proposed. The proposed converter has voltage gain of around 6 when the duty cycle
is 0.5. Since ZVS is achieved under CCM, the prorosed converter has wide ZVS range. Also, voltage ratings of switch and diode are
the same as one third of output voltage, and ratings of input and output passive components are reduced due to the interleaving. In
addition voltage surge caused by diode reverse recovery is negligible due to ZCS turn-off of diodes. Operating principle of the
proposed converter is described and validated through theoretical analysis, simulation and experiment.
