Association of a high power factor power supply using an interleaved boost-flyback converter and a soft-switching full bridge topology (original) (raw)
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A novel implementation of a high power factor boost converter with increased efficiency is described. In this converter, a new zero-voltage transition tech-nique is used for soft switching of the main and auxiliary switches; also, no additional voltage and current stresses on the main and auxiliary switches occur. The operating modes, theoretical analysis, and design considerations of the proposed converter are explained in detail. To evaluate the performance of the proposed converter, simulation and experimental results for a 400-V, 50-kHz, 0.5-kW prototype AC-DC power factor correction converter is presented. Finally the simulation and experimental results are given to verify its rationality and practicability.
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Soft-Switched Boost Converter for Active Power Factor Correction
2015
A fully soft-switched boost-converter using a one auxiliary switch is presented here. Resonating capacitor and inductor value has been chosen through an optimization process. In this optimization process care has been taken for minimum voltage stress on main and auxiliary switches. Circuit description and operation of different operating modes are presented. Average current mode control has been chosen for its ability to accurately program the input current and less sensitive to noise. A 500W-50kHz Soft-Switched boost converter is simulated and analyzed. Based on the design, the principle of operation has been verified with computer simulation. The simulation is done using MATLAB SIMULINK.
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