Title :
Efficient power supply for the microwave electrothermal thruster (MET)
Author :
Ehsani, E. ; Mahdavi, J. ; Pitel, I. ; Brandenberg, J.E. ; Little, F.E.
Author_Institution :
Texas A&M Univ., College Station, TX, USA
fDate :
5/1/1998 12:00:00 AM
Abstract :
A resonant switch-mode power supply for the microwave electrothermal thruster (MET) is presented in this paper. The converter is operated with soft-switching at high frequency and exhibits a high efficiency. The soft switching technique used in this converter and the current-source inductor at the input minimize the EMI noise. Electric isolation between input and output is achieved with a center-tap transformer, whose magnetizing inductance is used as the resonant inductance of its resonant tank. The resulting high power density and increased reliability of the converter make it very suitable for aerospace applications. Simulation and experimental results of a 28 V/4.5 kV example are also presented
Keywords :
electromagnetic compatibility; electrothermal launchers; magnetrons; plasma radiofrequency heating; power supplies to apparatus; resonant power convertors; space vehicle power plants; switched mode power supplies; 28 V; 4.5 kV; EMI noise; aerospace applications; center-tap transformer; current-source inductor; electric isolation; high power density; magnetizing inductance; microwave electrothermal thruster; power supply; reliability; resonant inductance; resonant switch-mode power supply; simulation; soft-switching; Electromagnetic heating; Electrothermal effects; Inductance; Instruments; Magnetic resonance; Microwave devices; Microwave ovens; Power electronics; Power supplies; Satellites;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE
