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Phase-shifted parallel-input/series-output dual inductor-fed push-pu..
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| Author(s) |
J-i. Kang; C-W. Roh; G-W. Moon; M-J. Youn |
| Abstract |
A new phase-shifted parallel-input/series-output (PISO) dual inductor-fed push-pull converter for
high-power step-up applications is proposed. It is based on a two-module PISO modular dual inductorfed
push-pull converter operating 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 voltage conversion
characteristic which is linear and less sensitive to changes in the control input, and a high step-up ratio
with a greatly reduced switch turn-off stress resulting in a significant improvement in the power
conversion efficiency. It also shows a low ripple content and low root-mean-square (RMS) current in
the output capacitor. The operational principle is analyzed and a comparative analysis with the
conventional two-module PISO modular dual inductor-fed push-pull converter is presented. A 50kHz,
800W, 350Vdc prototype with an input of 20 – 32Vdc has also been constructed to validate the
proposed converter. The proposed converter compares favorably with the conventional counterpart
and is considered well suited to high-power step-up applications. |
| Download |
| Filename: | EPE2001 - PP00848 - Kang.pdf |
| Filesize: | 341.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-15 by System |
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