Capacitive-loaded push-pull parallel-resonant converter

Author

Edry, Daniel ; Ben-yaakov, Sam

Author_Institution

Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

Volume

29

Issue

4

fYear

1993

fDate

10/1/1993 12:00:00 AM

Firstpage

1287

Lastpage

1296

Abstract

Results of a theoretical and experimental investigation of a capacitive-loaded push-pull parallel-resonant DC-DC converter (CL-PPRC) are presented and discussed. The push-pull parallel-resonant converter (PPRC) is driven by a lower-than-resonance frequency and the secondary voltage is rectified and smoothed by a capacitive filter. The CL-PPRC is shown to operate in the zero voltage switching (ZVS) mode with a boost-like DC transfer ratio that is approximately linear with the period of the switching frequency. Experimental results of a 180 W, high output voltage (1.8 KV) prototype are found to be in good agreement with the analysis, models, and simulation results presented. The basic characteristic of ZVS, the fact that the resonant current is passing through the switches only during a fraction of the period, the high-voltage transfer ratio, and the inherent input/output (I/O) isolation, make the proposed topology a viable design alternative in avionic and aerospace applications

Keywords

equivalent circuits; power convertors; power supply circuits; space vehicle power plants; 1.8 kV; 180 W; DC-DC converter; aerospace applications; avionics; boost-like DC transfer ratio; capacitance loaded convertor; capacitive filter; equivalent network; high-voltage transfer ratio; parasitic resonance; push-pull parallel-resonant converter; resonant current; transfer function; zero voltage switching; Analytical models; DC-DC power converters; Filters; Frequency conversion; Linear approximation; Resonance; Switches; Switching frequency; Virtual prototyping; Zero voltage switching;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.259532

Filename

259532