Title :
Capacitor switched gate-turnoff thyristor
Author :
Huang, Q. ; Amaratunga, G.A.J.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
fDate :
4/1/1993 12:00:00 AM
Abstract :
Gate-turnoff performance of the gate-turnoff thyristor (GTO) through the transient current of a capacitor is studied. Experimental results on such a capacitor-switched GTO (CSG) show that a large negative transient current is obtained resulting from the discharge of a capacitor attached to the gate of the GTO. Very high turn-off current in the CSG can be achieved. A simple MOS-controlled gate-driving circuit is proposed which provides full voltage control of the GTO. Comparison between the CSG and the GTO-cascode switch is also carried out
Keywords :
power electronics; thyristors; transients; voltage control; GTO-cascode switch; MOS-controlled gate-driving circuit; capacitor-switched GTO; full voltage control; gate-turnoff performance; negative transient current; transient current; turn-off current;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings G
