Bonfring International Journal of Power Systems and Integrated Circuits
Online ISSN: 2277-5072 | Print ISSN: 2250-1088 | Frequency: 4 Issues/Year
Impact Factor: 0.651 | International Scientific Indexing(ISI) calculate based on International Citation Report(ICR)
Flyback Snubber to Recycle the Absorbed Energy in the Clamping Capacitor for Isolated Bidirectional Full Bridge DC-DC Converter
Abstract:
The major intention of this paper is to completely design a full-bridge DC-DC converter with extremely high conversion ratio, high output power and soft-start-up capability. This paper introduces a flyback Snubber for the purpose of recycling the absorbed energy in the clamping capacitor. The flyback Snubber can effectively regulate the voltage of the clamping capacitor; as a result, it can clamp the voltage to a desired level just higher than the voltage across the low-side transformer winding. The current level of the current-fed inductor is subsequently raised up to that of the leakage inductance, which can completely reduce their current difference and, consecutively, reduces the voltage spike. A prototype with low-side voltage of 13V and high-side voltage of 63V has been implemented, from which experimental results have verified its feasibility.
Keywords: Flyback Snubber, Isolated Full Bridge DC-DC Converter, Leakage Inductance, Soft Start-up.
Volume: 7 | Issue: 1
Pages: 19-25
Issue Date: March , 2017
DOI: 10.9756/BIJPSIC.8338
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