An AC/DC PFC Converter with Active Soft Switching Technique

S. Aiswariya and R. Dhanasekaran
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S. Aiswariya: Syed Ammal Engineering College, Ramanathapuram, Tamil Nadu, India
R. Dhanasekaran: Syed Ammal Engineering College, Ramanathapuram, Tamil Nadu, India

International Journal of Energy Optimization and Engineering (IJEOE), 2014, vol. 3, issue 3, 101-121

Abstract: This paper proposes an AC-DC converter with the application of active type soft switching techniques. Boost converter with active snubber is used to achieve power factor correction. Boost converter main switch uses Zero Voltage Transition switching for turn on and Zero Current Transition switching for turn off. The active snubber auxillary switch uses Zero Current Switching for both turn on and turn off. Since all the switches of the proposed circuit are soft switched, overall component stress has been greatly reduced and the output DC voltage is expected to have low ripples. A small amount of auxillary switch current is made to flow to the output side by the help of coupling inductor. The proposed circuit is simulated using MATLAB Simulink. All the related waveforms are shown for the reference. The power factor is measured as 0.99 showing that the input current and input voltage is in phase with each other. The PFC circuit has very less number of components with smaller size and can be controlled easily at a wide line and load range.

Date: 2014
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