Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of Current Fed Full Bridge DC-DC Converter with Active Clamp

능동 클램프형 전류형 단상 풀브리지 DC-DC 컨버터의 동작 해석

  • Cha, Han-Ju (Department of Electrical Engineering, Chungnam National University) ;
  • Choi, Soon-Ho (Department of Electrical Engineering, Chungnam National University) ;
  • Ahn, Chi-Hyung (Department of Electrical Engineering, Chungnam National University)
  • Published : 2007.04.19
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Abstract

Isolated Current fed full-bridge converter with active clamp is analyzed in this paper. An active clamp branch is used for limiting the voltage overshoot in the bridge switches and rectifier diodes. Zero voltage switching(ZVS) is also realized by using the energy stored in the transformer leakage inductance. To analyze the converter, 6 modes of operation are introduced and investigated. For each of the modes, voltage and current equations are derived together with corresponding equivalent circuits. 200W prototype dc-dc converter is assembled and verifies the effectiveness of the analysis and simulation.

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