Control unit for static converter

Details Control unit for static converter Control unit for static converter

1979-09-19

1982-04-20

Pellinen, A. D.

Electricity: power supply or regulation systems

Output level responsive

Phase controlled switching using electronic tube or a three...

323244, 363135, 363137, G05F 1455, H02M 7515

Patent

active

043261604

ABSTRACT:
A digital control unit for a static converter contains a binary-coded counter which counts the pulses of an oscillator. The counter outputs are connected to the address inputs of a function memory in which sawtooth or ramp functions are stored. The numbers read out of the function memory are compared in a comparator, with a number determining the drive of the static converter. The result of the comparison and pulses on selected outputs of the counter are linked, in a logic circuit, to form firing pulses for the static converter. The invention is suitable for control units for static converters, in particular for AC control elements and inverters. All expense of adjusting, and all compensation of drift errors is obviated.

REFERENCES:
patent: 3952240 (1976-04-01), Ruumpol
patent: 4017744 (1977-04-01), Johnson
patent: 4105939 (1978-08-01), Culbertson
patent: 4128771 (1978-12-01), Domenico
patent: 4204149 (1980-05-01), Cleary et al.

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