Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)

The Korean Institute of Power Electronics (전력전자학회)
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A ZCT PWM Boost Converter using parallel MOSFET switch

병렬 MOSFET 스위치를 이용한 ZCT PWM Boost Converter

  • Kim Tea-Woo (Dept. Electronics & control eng., Kum-oh Nat'l Univ. of Technology) ;
  • Hur Do-Gil (Dept. Electronics & control eng., Kum-oh Nat'l Univ. of Technology) ;
  • Kim Hack-Sung (Dept. Electronics & control eng., Kum-oh Nat'l Univ. of Technology)
  • 김태우 (금오공과대학교 전자제어공학과) ;
  • 허도길 (금오공과대학교 전자제어공학과) ;
  • 김학성 (금오공과대학교 전자제어공학과)
  • Published : 2002.07.01
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Abstract

A ZCT(Zero Current Transition) PWM(Pulse-Width-Modulation) boost converter using parallel MOSFET switch is proposed in this paper. The IGBT(main switch) of the proposed converter is always turned on with zero current switching and turned off with zero current/zero voltage switching. The MOSFET(auxiliary switch) is also operates with soft switching condition. In addtion to, the proposed converter eliminates the reverse recovery current of the freewheeling diode by adding the resonant inductor, Lr, in series with the main switch. Therefore, the turn on/turn off switching losses of switches are minimized and the conduction losses by using IGBT switch are reduced. In addition to, using parallel MOSFET switch overcomes the switching frequency limitation occurred by current tail. As mentioned above, the characteristics are verified through experimental results.

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