Title :
An improved gate drive circuit using an air core reactor developed for high power GTO thyristors
Author :
Matsuo, Hirofumi ; Kurokawa, Fujio ; Iida, Katsuji ; Koga, Takashi ; Kishimoto, Takahiro
Author_Institution :
Dept. of Electron., Nagasaki Univ., Japan
fDate :
29 Jun-3 Jul 1992
Abstract :
An improved gate drive circuit for high power GTO thyristors is presented. The energy storage/transfer characteristics of an air core reactor and the fast switching characteristics of FETs are employed to make the high gate current of sharp pulse form. The power loss in the gate drive circuit can be reduced by using the low resistance and the hysteresis comparator to detect and control the steady on-gate current. The proposed gate drive circuit is analyzed, and its usefulness is confirmed by experiments
Keywords :
driver circuits; field effect transistors; power transistors; switching circuits; thyristors; FETs; GTO thyristors; air core reactor; energy storage; energy transfer; gate current; gate drive circuit; hysteresis comparator; power loss; resistance; switching characteristics; Anodes; Circuit analysis; FETs; Hysteresis; Inductors; Optical switches; Pulse circuits; Resistors; Switching circuits; Thyristors;
Conference_Titel :
Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE
Conference_Location :
Toledo
Print_ISBN :
0-7803-0695-3
DOI :
10.1109/PESC.1992.254733
