Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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A Fuel Cell Generation System with a New Active Clamp Sepic-Flyback Converter

  • Lee, Won-Cheol (School of Information and Communication Engineering, Sungkyunkwan University) ;
  • Jang, Su-Jin (Hyosung Industry Research Center) ;
  • Kim, Soo-Seok (Department of Electrical Engineering, Seoul National University of Technology) ;
  • Lee, Su-Won (School of Information and Communication Engineering, Sungkyunkwan University) ;
  • Won, Chung-Yuen (School of Information and Communication Engineering, Sungkyunkwan University)
  • Published : 2009.01.20
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Abstract

A high efficiency active clamp sepic-flyback converter is presented for fuel cell generation systems. The proposed converter is a superposition of a sepic converter mode and. flyback converter mode. The output voltages of the sepic converter mode and flyback converter mode can be regulated by the same PWM technique with constant frequency. By merging the sepic and flyback topologies, they can share the transformer, power MOSFET and active clamp circuit. The result has outstanding advantages over conventional active clamp DC-DC converters: high efficiency, high power density, and component utilization. Simulation results and experimental results are presented to verify the principles of operation for the proposed converter.

Keywords

References

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