Title :
On the saturable inductor commutation for zero-voltage switching
Author :
Harada, Koosuke ; Sakamoto, Hiroshi
Author_Institution :
Dept. of Electron., Kyushu Univ., Fukuoka, Japan
Abstract :
A novel method of high frequency switching is presented, where a small saturable inductor is used for the zero-voltage switching. The saturated conditions of the inductor is satisfied by the use of a PWM (pulse width modulation) controller with a saturable core or by the use of a saturable transformer with current feedback. The switching losses and the switching surges are reduced without increasing the conduction losses. Using this method, a DC-to-DC converter with 90% efficiency at a 1 MHz switching frequency was obtained.<>
Keywords :
commutation; inductors; power convertors; pulse width modulation; switching; 1 MHz; 90 percent; DC-to-DC converter; PWM controller; current feedback; high frequency switching; pulse width modulation; saturable inductor commutation; saturable transformer; switching losses; switching surges; zero-voltage switching; Circuit faults; Feedback; Frequency; Inductors; Pulse transformers; Pulse width modulation; Space vector pulse width modulation; Switching loss; Transformer cores; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1990. PESC '90 Record., 21st Annual IEEE
Conference_Location :
San Antonio, TX, USA
DOI :
10.1109/PESC.1990.131188
