Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
권호 표지

Zero-Voltage and Zero-Current-Switching (ZVZCS) Full Bridge PWM Converter with Zero Current Ripple

  • Baek, J.-W. (Power Electronics Research Division Korea Electrotechnology Research Institute) ;
  • Cho, J.G. (Power Electronics Research Division Korea Electrotechnology Research Institute) ;
  • Jeong, C.Y. (Power Electronics Research Division Korea Electrotechnology Research Institute) ;
  • Yoo, D.W. (Power Electronics Research Division Korea Electrotechnology Research Institute)
  • Published : 1998.10.01
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Abstract

A novel zero voltage and zero current switching (ZVZCS) full bridge (FB) PWM converter with low output current ripple is presented. A simple auxiliary circuit added in the secondary provides ZVZCS conditions to primary switches, ZVS for leading-leg switches and ZCS for lagging-leg switches, as well as reduces the output current ripple (ideally zero ripple). The auxiliary circuit includes neither lossy components nor additional active switches which are demerits of the previously presented ZVZCS converters. Many advantages including simple circuit topology, high efficiency, low cost and low current ripple make the new converter attractive for high performance high power (＞1kW) applications. The principle of operation, features and design considerations are illustrated and verified on a 2.5kW, 100KHz IGBT based experimental circuit.

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