A cascaded Schwarz converter for high frequency power distribution

Author

Ray, Biswajit ; Stuart, Thomas A.

Author_Institution

Dept. of Electr. & Comput. Eng., Puerto Rico Univ., Mayaguez, Puerto Rico

Volume

4

Issue

4

fYear

1989

fDate

10/1/1989 12:00:00 AM

Firstpage

478

Lastpage

485

Abstract

AC distribution networks operating at 20 kHz are being considered for future spacecraft. These systems offer important reductions in size and weight and are easier to protect than DC systems at high power levels. It is suggested that two Schwarz converters in cascade provide a very reliable 20 kHz source that features zero-current commutation, constant frequency, and fault-tolerant operation. Equations for the steady-state performance are derived, and graphical results can be plotted in a convenient manner. A 900 W version has been built and successfully tested under no-load, full-load, and short-circuit conditions

Keywords

distribution networks; power convertors; space vehicle power plants; 20 kHz; 900 W; AC distribution networks; cascaded Schwarz converter; constant frequency; fault-tolerant operation; high frequency power distribution; power convertors; space vehicle power plants; spacecraft; steady-state performance; zero-current commutation; Fault tolerance; Frequency conversion; Power cables; Power distribution; Power system protection; Power system reliability; RLC circuits; Resonance; Space vehicles; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.41772

Filename

41772