Digital pulse generator with end-stop detection and control

Details Digital pulse generator with end-stop detection and control Digital pulse generator with end-stop detection and control

1978-03-14

1979-11-06

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307262, 307269, 363 58, 363 96, H03K 1772, H03K 513

Patent

active

041737229

ABSTRACT:
A firing pulse generator for sequential firing of thyristors digitally synthesizes time dependent references associated in succession with the respective thyristors with a hard pulse, and predetermined critical counts on a time dependent reference are identified representing the first and second end-stops defining the permissible fire-angle range. A substitute for the hard pulse is generated when the hard pulse is advanced, and when it is retarded in relation to predetermined limits, e.g. the end-stops. The time dependent reference is generated over a range sufficient to cover the permissible fire-angle range defined by the end-stops. Blocking of an illegal hard pulse is effected independently from the generation of a hard pulse. Pulse suppression is performed independently from the generation of a hard pulse, or of a substitute pulse.

REFERENCES:
patent: 3562625 (1971-02-01), Van den Broek
patent: 3681676 (1972-08-01), Bourbeau
patent: 3932771 (1976-01-01), Bucek et al.

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