Title :
New soft switched PWM converter with minimized conduction loss of auxiliary switch
Author_Institution :
Dept. of Inf. & Commun. Eng., Woosuk Univ., Jeonbuk, South Korea
Abstract :
A new soft switched PWM converter in which the main and auxiliary switches turn on at zero current and turn off at zero voltage is discussed. Two added saturable inductors are operated to satisfy soft switching as well as to reduce reverse recovery current of diodes. In this paper, new switching operations of the suggested converter are suggested to reduce the pulse width of the conduction period of the auxiliary switch. This width is about 1/20 of the main switch for half duty ratio of 250 kHz operation. The above characteristics are verified by experimental results for a 250 kHz operation
Keywords :
PWM power convertors; inductors; losses; switching circuits; 250 kHz; auxiliary switch; minimized conduction loss; pulse width reduction; reverse recovery current reduction; saturable inductors; soft switched PWM converter; zero current switching; zero voltage switching; Communication switching; Diodes; Frequency conversion; Inductors; Pulse width modulation; Pulse width modulation converters; Space vector pulse width modulation; Switches; Switching converters; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1998. PESC 98 Record. 29th Annual IEEE
Conference_Location :
Fukuoka
Print_ISBN :
0-7803-4489-8
DOI :
10.1109/PESC.1998.703426
