FREQUENCY-WIDTH-PULSE CONTROLLER OF AC VOLTAGE WITH BALANCED LOAD Russian patent published in 2013 - IPC G05B11/28 H02M5/293 

FIELD: electricity.

SUBSTANCE: device is composed of the following components: terminal 1 to connect a source of a preset signal, summator 2, integrator 3, the first 4, second 5 and third 6 relay elements, the first 7, second 8, third 9, fourth 15, fifth 16 and sixth 17 comparator, the first 10, second 11, third 12, fourth 13 and firth 14 dynamic D-triggers, terminals 18, 19, 20 of buses of line voltage of A, B, C phases, the first 21-1, second 22-2, third 23-3, fourth 21-2, fifth 21-3, sixth 22-1, seventh 22-3, eighth 23-1 and ninth 23-2 power switches, load resistors 24, zero potential bus 25, current sensors 26, 27, 28, each of them including current transformer 29, demodulator (rectifier) 30 and ripple filter 31.

EFFECT: improved power parameters.

9 dwg