A soft-switching active-clamp scheme for isolated full-bridge boost converter

@article{Park2004ASA,
  title={A soft-switching active-clamp scheme for isolated full-bridge boost converter},
  author={En-Sung Park and Sung Jin Choi and J. M. Lee and B. H. Cho},
  journal={Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.},
  year={2004},
  volume={2},
  pages={1067-1070 vol.2}
}
In this paper, the isolated full-bridge boost converter with active clamp is described and a new active-clamping algorithm to improve the efficiency is suggested. In the proposed method, the resonance between the clamp capacitor and the leakage inductor is utilized to reduce switching losses. The loss analysis is performed by simulation and the improved performance is confirmed by experimental results. 
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New start-up schemes for isolated full-bridge boost converters

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Full-bridge isolated current fed converter with active clamp

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A soft-switched, full-bridge boost converter employing an active-clamp circuit

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