VOLTAGE CONVERTER WITH VOLTAGE DROP COMPENSATION Russian patent published in 2020 - IPC H02J7/02 G05F1/10 

FIELD: electrical engineering.

SUBSTANCE: converter (10) comprises voltage stabilizer (1) with built-in error amplifier (2) and reference voltage source (3) connected to load (11) by means of power wires (12) and (13), as well as adaptive system (14) for compensation of voltage drop on power wires, made in form of feedback (15). Said system (14) comprises scaling amplifier (18), adder (19) and feedback conductor (15). Converter (10) is additionally equipped with voltage setting device (20) and voltage drop compensation system (21) on internal power connections of converter (10), which includes input, intermediate and final differential amplifiers (24, 26, 27) connected to each other and provided with filters (28, 23, 25, 22) of in-phase interference, differential interference and low frequencies, respectively. In operation of the device voltage drop is recorded between negative output (9) of converter (10) and potential equalization terminal (16), i.e. voltage drop on negative power wire (13). Then, for complete compensation, the measured voltage is multiplied by two and summed up with signal of voltage setting device (20) on load (11). Subtracting the measured voltage at output terminals of converter (10) from the summed value of voltage, voltage of full compensation is determined on power wires (12, 13) connected to load (11), and on internal connections of converter (10). As a result, by supplying signal of voltage setting device (20) on load (11) to stabilizer (1) reference voltage circuit (29) and supply of voltage difference of setter (20) and voltage of full compensation to feedback loop (30) of stabilizer (1) at output of built-in stabilizer (1) of error amplifier (2), voltage drop compensation voltage is generated and on power wires (12, 13), and on internal power busbars.

EFFECT: higher accuracy of preset voltage stabilization regardless of load magnitude variation.

1 cl, 1 dwg