A high efficiency isolated DC-DC converter with high-output voltage for TWTA telecommunication satellite applications

Author

Gules, Roger ; Barbi, Ivo

Author_Institution

Power Electron. Inst., Fed. Univ. of Santa Catarina, Florianopolis, Brazil

Volume

4

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1982

Abstract

An isolated DC-DC converter for high-voltage output voltage applications is presented in this paper. The proposed converter is specially indicated for application where there are necessary low volume and mass and high-efficiency (94%), operating with unregulated low input voltage. The main operation characteristics are soft-commutation in all power switches, constant switching frequency, PWM modulation and integration of the components intrinsic elements (distributed transformer capacitance, leakage inductance and power switches capacitance)

Keywords

DC-DC power convertors; PWM power convertors; artificial satellites; commutation; satellite communication; space vehicle power plants; switching circuits; travelling wave amplifiers; travelling wave tubes; 150 W; 26 to 44 V; 3200 V; 80 kHz; 94 percent; DC-DC converter; PWM modulation; TWTA telecommunication satellite applications; constant switching frequency; distributed transformer capacitance; high-efficiency; high-voltage output voltage; leakage inductance; low mass; low volume; operation characteristics; power switches; power switches capacitance; soft-commutation; travelling wave tube amplifier; unregulated low input voltage; Capacitance; Capacitors; Clamps; DC-DC power converters; Diodes; Inductors; Pulse width modulation; Switches; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954412

Filename

954412