Title :
Snubber circuits and losses of voltage-source GTO inverters
Author :
Brambilla, Angelo ; Dallago, Ennco
Author_Institution :
Dipartimento di Ingegneria Elettrica, Pavia Univ., Italy
fDate :
1/1/1992 12:00:00 AM
Abstract :
The power dissipation of series and parallel snubbers in gate turn-off thyristor (GTO) inverters is investigated. New circuits using optimized snubbers are simulated and compared and solutions that allow the recovery of the energy stored in the snubbers are reported. In particular, an inverter circuit that uses a transformer for the recovery of the energy trapped in the snubbers is investigated, and solutions that avoid saturation of the transformer core are studied
Keywords :
invertors; losses; overvoltage protection; thyristor applications; energy recovery; gate turn-off thyristor; losses; parallel snubbers; power dissipation; series snubbers; transformer; voltage-source GTO inverters; Capacitance; Circuit simulation; Inductance; Inverters; Power dissipation; Semiconductor diodes; Snubbers; Thyristors; Transformer cores; Voltage;
Journal_Title :
Power Electronics, IEEE Transactions on
