Title :
Nonlinear capacitors in snubber circuits for GTO thyristors
Author :
Fregien, Gert ; Van Wyk, Jacobus D.
Author_Institution :
ABB Henschel AG, Mannheim, Germany
fDate :
4/1/1992 12:00:00 AM
Abstract :
Many applications with GTO thyristors require snubber circuits, at least for, turn-off. In achieving high switching frequencies there are conflicting design criteria for the snubber capacitor-losses versus timing conditions. Improvements to this situation are expected by employing nonlinear capacitors. Features of snubber circuits with nonlinear capacitors are described, and experimental results obtained from 50 A and 90 A GTO thyristors are discussed
Keywords :
overcurrent protection; switching; thyristors; varactors; 50 A; 90 A; GTO thyristors; design criteria; losses; nonlinear capacitors; overcurrent protection; snubber circuits; switching frequencies; timing; turn-off; Capacitance; Capacitors; Ceramics; Circuits; Ear; Snubbers; Tail; Thyristors; Timing; Voltage;
Journal_Title :
Power Electronics, IEEE Transactions on
