A primary-side-assisted zero-voltage and zero-current switching DC-DC converter

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In this paper, a new primary-side-assisted zero-voltage and zero-current switching DC-DC converter with transformer isolation is proposed. The proposed DC-DC converter provides zero-current switching for the leading leg using a small auxiliary circuit consisting of two diodes and one auxiliary transformer whose power rating is about 10% of that of the main transformer. It has a load current control capability even at short circuit conditions using simple and robust structure. The auxiliary circuit can also be applied to three-level DC-DC converters that are promising for high-voltage and high-power applications. Operation of a 12 kW full bridge prototype designed for a welding application was tested and verified by experiments.
Publisher
TAYLOR & FRANCIS LTD
Issue Date
2002-01
Language
English
Article Type
Article
Keywords

BRIDGE PWM CONVERTER

Citation

INTERNATIONAL JOURNAL OF ELECTRONICS, v.89, no.1, pp.77 - 89

ISSN
0020-7217
URI
http://hdl.handle.net/10203/83737
Appears in Collection
EE-Journal Papers(저널논문)
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