Title :
Applications of magnetic amplifiers to high-frequency DC-to-DC converters
Author :
Harada, Koosuke ; Nabeshima, Takashi
Author_Institution :
Dept. of Electron., Kyushu Univ., Fukuoka, Japan
fDate :
4/1/1988 12:00:00 AM
Abstract :
Control characteristics and power losses of magnetic amplifier used as a pulse-width modulator are discussed for a typical forward converter driven high-frequency switching. The control region of the magnetic amplifier is analyzed by modeling the DC magnetizing characteristics of the core and the reverse recovery of the diode in the converter circuit, and the dynamic characteristics of the regulated converter are examined analytically. The iron loss and switching loss of the magnetic amplifier are derived as functions of the switching frequency and the load current, with five states of the magnetic amplifier taken into consideration
Keywords :
magnetic amplifiers; power convertors; high-frequency DC-to-DC converters; magnetic amplifiers; High power amplifiers; Magnetic analysis; Magnetic cores; Magnetic losses; Magnetic modulators; Magnetic switching; Pulse amplifiers; Pulse modulation; Pulse width modulation converters; Switching converters;
Journal_Title :
Proceedings of the IEEE
