Design of Phase-Shifted Parallel/Series-Output Dual Inductor-Fed Push-Pull Converter for High-Power Step-Up Applications

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A new high-power step-up converter based on the phase-shifted parallel-input/series-output (PISO) modular converter with two dual inductor-fed push-pull converters is proposed. It is operated at a constant duty cycle and the output voltage is controlled with a phase-shift between the modules. It shows an output voltage which is high and linear to the control input, and a low switch turn-off stress resulting in a significant improvement in the efficiency. It also shows low ripple contents, fast dynamics, and low root-mean-square (RMS) currents in the output capacitors. The operation and features are analyzed and the mathematical models are derived. The design guidelines of a closed-loop 50 kHz, 400-1200 W, 18-30 Vdc to 310 Vdc prototype and the experimental results are provided to confirm the validity of the proposed converter.
Issue Date

Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE (Volume:2 ), v.2, pp.1249 - 1254

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EE-Conference Papers(학술회의논문)
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