Digital firing pulse generator for thyristor power converters

Details Digital firing pulse generator for thyristor power converters Digital firing pulse generator for thyristor power converters

1975-12-22

1977-04-12

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307269, 321 69R, 323 22SC, H03K 1772, H02M 7155, H02M 5257

Patent

active

040177440

ABSTRACT:
A digital pulse generator for firing thyristors in a polyphase converter system is described in an hybrid analog-digital and in an all digital form. A phase locked oscillator associated with a digital counter generates timing waveforms synchronized with the phase lines to establish firing angles in relation to a reference signal. Each firing pulse triggers the logic circuit of a distributor and a multiplexer is coupled with such logic circuitry in order to insure that the proper timing waveform is selected so as to match the selection of the next thyristor to be fired.

REFERENCES:
patent: 3648148 (1972-03-01), Bechet et al.
patent: 3735241 (1973-05-01), O'Sullivan

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