Active-Clamp Dual-Transformer ZVS Flyback Converter

Pei-Ching Tseng, Kuo-Ing Hwu (), Yu-Lin Chen and Jenn-Jong Shieh
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Pei-Ching Tseng: Department of Electrical Engineering, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
Kuo-Ing Hwu: Department of Electrical Engineering, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
Yu-Lin Chen: Department of Electrical Engineering, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
Jenn-Jong Shieh: Department of Electrical Engineering, Feng Chia University, No. 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan

Energies, 2025, vol. 18, issue 13, 1-22

Abstract: In order to upgrade the ability of the traditional flyback converter to transfer energy to the load, a dual-flyback converter with two active clamping circuits is added, using the same clamping capacitor to recover the leakage inductance energy. Furthermore, no additional resonant inductor is needed, and both the switches have zero voltage switching (ZVS) to reduce the switching loss. In addition, full-wave rectification is used on the secondary side to decrease the output voltage ripple frequency, which makes it easy to design the output filter.

Keywords: active-clamp; dual-transformer; flyback converter; soft switching; resonant; ZVS; FPGA (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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