Title :
Gate drive circuits for high voltage, large current GTO-thyristors connected in series
Author :
Saotome, Hideo ; Takahashi, Yoshikazu
Author_Institution :
Fuji Electr. Corp. Res. & Dev. Ltd., Japan
Abstract :
Two gate drive units have been developed for use with 2.5 kV-2kA or 4.5 kV-3 kA reverse conducting gate turn-off (GTO) thyristors connected in series. Some technical problems connected with driving GTO-thyristor series-connected modules are clarified. New circuits for realizing indirect optical GTO-thyristor drive, constant on-gate current output, and protection of the gate drive units against GTO-thyristor failure have been designed.<>
Keywords :
thyristor applications; 2 kA; 2.5 kV; 3 kA; 4.5 kV; GTO-thyristors; constant on-gate current output; gate drive units; protection; reverse conducting gate turn-off thyristors; series-connected modules; Circuits; Delay; High speed optical techniques; Light emitting diodes; Optical filters; Optical scattering; Optical sensors; Stimulated emission; Thyristors; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1990. PESC '90 Record., 21st Annual IEEE
Conference_Location :
San Antonio, TX, USA
DOI :
10.1109/PESC.1990.131266
