Zero-voltage and zero-current-switching full-bridge PWM converter using secondary active clamp

A new zero-voltage and zero-current-switching (ZVZCS) full-bridge (FB) pulse width modulation (PWM) power converter is proposed to improve the performance of the previously presented ZVZCS FB PWM power converters. By adding a secondary active clamp and controlling the clamp switch moderately, ZVS (f...

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Bibliographic Details
Published in:IEEE transactions on power electronics 1998-07, Vol.13 (4), p.601-607
Main Authors: Jung-Goo Cho, Chang-Yong Jeong, Lee, F.C.Y.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit topology
Clamps
Costs
Electrical engineering
Electrical engineering. Electrical power engineering
Electronics
Exact sciences and technology
Frequencies
Inductors
Insulated gate bipolar transistors
Miscellaneous
Pulse width modulation
Pulse width modulation converters
Switches
Various equipment and components
Zero current switching
Zero voltage switching
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Summary:A new zero-voltage and zero-current-switching (ZVZCS) full-bridge (FB) pulse width modulation (PWM) power converter is proposed to improve the performance of the previously presented ZVZCS FB PWM power converters. By adding a secondary active clamp and controlling the clamp switch moderately, ZVS (for leading-leg switches) and ZCS (for lagging-leg switches) are achieved without adding any lossy components or the saturable reactor. Many advantages, including simple circuit topology, high efficiency and low cost, make the new power converter attractive for high-voltage and high-power (>10 kW) applications. The principle of operation is explained and analyzed. The features and design considerations of the new power converter are also illustrated and verified on a 1.8 kW 100 kHz IGBT-based experimental circuit.
ISSN:0885-8993
1941-0107
DOI:10.1109/63.704125