Gate controlling apparatus for a thyristor valve

Details Gate controlling apparatus for a thyristor valve Gate controlling apparatus for a thyristor valve

1976-03-24

1978-07-11

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307310, 363 68, H03K 1714

Patent

active

041004345

ABSTRACT:
A gate controlling apparatus for a thyristor valve including a plurality of series connected thyristors controlled by a narrow gate pulse. The apparatus includes means for judging whether the thyristor valve is to be in the conductive state or not, means for detecting a forward voltage across at least one of the thyristors in the thyristor valve, and an AND circuit for generating an output at a time when an AND condition between the respective outputs of the judging means and the forward voltage detector means is satisfied. The apparatus further includes means for detecting a period of inverse voltage across at least one of the thyristors in the thyristor valve. The forward and inverse voltages may be, respectively, detected by detecting the forward and inverse voltages of specified thyristors.

REFERENCES:
patent: 3728557 (1973-04-01), Pelly et al.

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