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      • SCIESCOPUSKCI등재

        A High-Power Step-up Converter with High Efficiency and Fast Control-to-Output Dynamics

        Jeong-il Kang,Chung-Wook Roh,Gun-WooㅡMoon,Myung-joong Youn 전력전자학회 2001 JOURNAL OF POWER ELECTRONICS Vol.1 No.2

        A new high-power step-up based on the two-module parallel-input/senes-output (PISO) modular dual inductor-fed push-pull converter is proposed The proposed converter is operated at a constant duty cycle and employs an auxiliary circuit to control the output voltage with a phase-shift between two modules It shows a high efficiency due to the greatly reduced switch turn-off stress It also shows a high and linear voltage conversion ratio, low current stress in the output capacitor, and fast control-to-output dynamics The operation principles and the mathematical models of the proposed converter are presented. Features of the proposed converter are discussed in comparison with the two-module PISO modular dual inductor-fed push-pull converter Also, experimental results from a 50kHz, 800W, 350Vdc prototype with an input voltage range of 20 - 32Vdc are provided to confirm the validity of the proposed converter The new converter compares favorably with the conventional counterpart, and is considered well suited to high-power step-up applications.

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