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병렬 MOSFET 스위치를 이용한 ZCT PWM Boost Converter
김태우(Tea-Woo Kim),허도길(Do-Gil Hur),김학성(Hack-Sung Kim) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
A ZCT(Zero Current Transition) PWM(Pulse-width -Modulation) boost converter Using parallel MOSFET switch is proposed m 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<br/> 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<br/> As mentioned above, the characteristics are verified through experimental results.