Title :
A novel high power factor converter using a magnetic amplifier
Author :
Harada, Kazurou ; Ishihara, Yoshiyuki ; Todaka, Toshiyuki
Author_Institution :
Dept. of Electron., Doshisha Univ., Kyoto, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
A novel high power factor converter is presented in this paper. The proposed converter is a high-frequency forward converter controlled by a magnetic amplifier. This converter has no need of special control to correct the power factor. Power factor is corrected by the automatic variation of the saturation time of the magnetic amplifier according to the input voltage variation. The current stress of the transistor switch is low because this converter operates in the continuous conduction mode of the inductor current. The circuit operation is verified experimentally at a frequency of 500 kHz
Keywords :
DC-DC power convertors; PWM power convertors; magnetic amplifiers; power factor correction; 500 kHz; PWM control; automatic saturation time variation; circuit operation; continuous conduction mode; high frequency dc-to-dc converter; high power factor converter; high-frequency forward converter; inductor current; input voltage variation; magnetic amplifier; power factor correction; transistor switch; Automatic control; High power amplifiers; Inductors; Power amplifiers; Reactive power; Saturation magnetization; Stress; Switches; Switching converters; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
