Voltage oscillation reduction technique for phase-shift full-bridge converter

A conventional phase-shift full-bridge (PSFB) converter has a serious voltage oscillation problem across the secondary rectifier diodes. To overcome this problem, a new voltage oscillation reduction technique (VORT), which effectively reduces the rectifier voltage oscillation by a simple nondissipative manner, is proposed. The concept of VORT is to utilize the operation of leading-leg transition, which does not cause severe rectifier voltage oscillation, to the lagging-leg transition. It is simply implemented by employing only a resonant capacitor in series with the transformer secondary and a small magnetizing inductance of the transformer without any lossy components. Moreover, the VORT can realize zero-voltage switching for all switches over a wide load range using the energy that is stored in the transformer magnetizing inductor and output filter inductor. The concept, operational principle, oscillation analysis, and design considerations of VORT are presented and verified experimentally.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2007-10
Language
ENG
Keywords

ZERO-VOLTAGE

Citation

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, v.54, no.5, pp.2779 - 2790

ISSN
0278-0046
URI
http://hdl.handle.net/10203/87367
Appears in Collection
EE-Journal Papers(저널논문)
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