Title :
Over 55kV/μs, dv/dt turn-off characteristics of 4kV-static induction thyristor for pulsed power applications
Author :
Shimizu, N. ; Sekiya, T. ; Iida, K. ; Imanishi, Y. ; Kimura, M. ; Nishizawa, J.
Author_Institution :
NGK Insulators Ltd, Nagoya, Japan
Abstract :
Over 55 kV/μs, high voltage rise-up rated pulses have been successfully applied between the anode and the cathode of a 4 kV/300 A static induction thyristor (SIThy) during turn-off actions by applying the induction energy storage (IES) circuit invented in 2002 (K. Iida et al., 15th Symp. of Static Induction Devices, SSID-02-9, p.45-50, 2002). SIThys were destroyed when the high dv/dt value, over 2 kV/μs, was applied in the forward direction between the anode and the cathode during the turn-off action, by the conventional opening switching technique. We simulated the electric field strength inside of the SIThy on the IES circuit; consequently the electric field applied in front of the n-emitter during the turn-off action is absolutely low. This is considered to be the reason of the high tolerance for "turn-off dv/dt" of SIThys using the IES circuit.
Keywords :
pulse circuits; thyristor circuits; thyristors; 300 A; 4 kV; IES circuit; SIThy internal electric field strength; high voltage rise-up pulses; induction energy storage circuit; n-emitter electric field; pulsed power applications; static induction thyristor; thyristor dv/dt turn-off characteristics; turn-off action; turn-off dv/dt tolerance; Pulse circuits; Thyristor circuits; Thyristors;
Conference_Titel :
Power Semiconductor Devices and ICs, 2004. Proceedings. ISPSD '04. The 16th International Symposium on
Print_ISBN :
4-88686-060-5
DOI :
10.1109/ISPSD.2004.1332920