VOLTAGE COMPENSATION DEVICE Russian patent published in 2017 - IPC H02P9/14 H02P9/34 

FIELD: electricity.

SUBSTANCE: voltage compensation device contains in each phase a booster transformer (1-1, 1-2 and 1-3), control units (2-1, 2-2 and 2-3), which includes the first rectifier (3) the second single-phase halfwave rectifier (4), a single-phase bridge shaper-limiter (5), the first (7) and the second (8) short impulse shapers, the ADC (9), the logical elements NO (10) and OR (11), the RS flip-flop (12), a delay element (13), a stable frequency impulse generator (14), a memory register (15), a summing counter (16), a subtracter (17), the DAC (18), a three-dimensional memory unit (19), electronic switches (20…27), which form a commutator (28). A control register (6) is connected to control units (2-1, 2-2 and 2-3). Phase loads (29-1, 29-2 and 29-3) are connected to the secondary windings of the respective transformers (1-1, 1-2 and 1-3) in series and to a three-phase generator (31) with an excitation control system (32) through the network terminals (30-0, 30-1, 30- 2 and 30-3). The device provides balance of phase voltages and compensation of distortions of the AC voltage curve with high accuracy.

EFFECT: reduction of unbalance of phase voltages and simultaneous decrease in the degree of non-sinusoidality of the voltage curve when the generator is operated on a variable non-uniform asymmetrical load.

2 dwg