A new boost converter-based soft switched active snubber cell for power factor correction

Document Type : Article


1 Department of Electrical-Electronics Engineering, Erzincan Binali Yildirim University, Erzincan, Turkey

2 Department of Electrical-Electronics Engineering, Bitlis Eren University, Bitlis, Turkey


This paper introduces a new active snubber cell for soft switched power factor correction (PFC) boost converters. In the new converter, the main switch turns on by zero voltage transition (ZVT) and turns off by zero voltage switching (ZVS). The main diode turns on by ZVS and turns off by zero current switching (ZCS). In the active snubber cell, the auxiliary switch turns on by ZCS and turns off by zero current transition (ZCT). Any semiconductor device does not expose the addition voltage stress. The theoretical analysis of the proposed converter is presented, and also verified with both simulation and experimental study at 100 kHz switching frequency and 600 W output power. Furthermore, the new converter has 95.7% efficiency and 0.99 power factor at soft switching operation.


Main Subjects

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