Thyristor commutation circuit

Details Thyristor commutation circuit Thyristor commutation circuit

1986-03-14

1987-08-18

Zazworsky, John

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

307305, 307633, H03K 1772

Patent

active

046879501

ABSTRACT:
A commutating circuit in combination with a snubber circuit are employed to switch a thyristor from a conducting state to a non-conducting state. The snubber circuit is connected across the cathode and anode of the thyristor to absorb system energy when the thyristor is switched. The commutating circuit is coupled in series with the cathode of the thyristor by means of a current transformer for increasing the cathode resistance, causing the cathode current to immediately transfer to the gate.

REFERENCES:
patent: 3614474 (1971-10-01), Hahn
patent: 4160920 (1979-07-01), Courier de Mere
patent: 4392175 (1973-07-01), Takigami et al.
patent: 4581542 (1986-04-01), Steigerwald

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