A High-Power Step-up Cpnverter with High Efficiency and Fast Control-to-output Dynamics

Jeong-Il Kim; Chung-Wook Roh; Gun-Woo Moon; Myung-Joong Youn

A High-Power Step-up Cpnverter with High Efficiency and Fast Control-to-output Dynamics

Vol. 1, No. 2, pp. 78-87, Oct. 2001

10.6113/JPE.2001.01.2.78

High-power step-up converter

High efficiency

Fast dynamics

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Abstract

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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Cite this article

[IEEE Style]

J. Kim, C. Roh, G. Moon, M. Youn, "A High-Power Step-up Cpnverter with High Efficiency and Fast Control-to-output Dynamics," Journal of Power Electronics, vol. 1, no. 2, pp. 78-87, 2001. DOI: 10.6113/JPE.2001.01.2.78.

[ACM Style]

Jeong-Il Kim, Chung-Wook Roh, Gun-Woo Moon, and Myung-Joong Youn. 2001. A High-Power Step-up Cpnverter with High Efficiency and Fast Control-to-output Dynamics. Journal of Power Electronics, 1, 2, (2001), 78-87. DOI: 10.6113/JPE.2001.01.2.78.