Title :
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
fDate :
6/23/1905 12:00:00 AM
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;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954412
