Journal of Power Electronics
- 제1권2호
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- Pages.78-87
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- 2001
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- 1598-2092(pISSN)
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- 2093-4718(eISSN)
A High-Power Step-up Converter with High Efficiency and Fast Control-to-Output Dynamics
- Kang, Jeong-il (Korea Advanced Institute of Science and Technology) ;
- Roh, Chung-Wook (Samsung Electronics Co.,LTD) ;
- Moon, Gun-Woo (Korea Advanced Institute of Science and Technology) ;
- Youn, Myung-Joong (Korea Advanced Institute of Science and Technology)
- 발행 : 2001.10.01
초록
A new high-power step-up based on the two-module parallel-input (PISO) modular dual inductor-fed push-pull converter is proposed. The proposed converter is operated at a constant duty cycle and employs and 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, 350 Vdc prototype with an input voltage range of 20-32 Vdc are provided to confirm the validity of the proposed converter. The new converter compares favorably with the conventional counterpart, and is considered well siuted to high-power step-up applications.