Title :
Saturable inductor commutation for zero voltage switching in DC-DC converter
Author :
Harada, Kanako ; Sakamoto, Hiroo ; Harada, Kanako
Author_Institution :
Dept. of Electron., Kyushu Univ., Fukuoka, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
A method of high-frequency switching is presented. In this method, a small saturable inductor is used for zero-voltage switching. The saturating condition of the inductor is controlled by a PWM (pulse-width modulation) controller with a saturable core or a current transformer. The zero-voltage switching for removing the switching losses and the switching noises is realized without increasing the conduction loss due to the resonant current. A DC-to-DC converter of 90% efficiency with 1-MHz switching frequency was obtained using this method
Keywords :
current transformers; inductors; power convertors; pulse width modulation; DC-to-DC converter; current transformer; high-frequency switching; pulse-width modulation; saturable inductor; switching noises; zero-voltage switching; Current transformers; DC-DC power converters; Inductors; Pulse transformers; Pulse width modulation; Resonance; Space vector pulse width modulation; Switching loss; Transformer cores; Zero voltage switching;
Journal_Title :
Magnetics, IEEE Transactions on
