FIELD: electrical engineering.
SUBSTANCE: according to the method, when realizing voltage distortions, instantaneous values of the main components of the line voltage of the power supply and load are determined. One of linear stresses of load is tied to similar linear voltage of power supply source by value of its phase angle. Then mismatch signals are generated between values of power and load source phase angles, after which, based on received signals, as well as mismatch signals of amplitude values of load linear voltage and a given voltage amplitude value, setting task for adjustment, which is realized by means of linear pulse-width modulation, forming a mismatch voltage signal, controlled by values of angles between linear voltages to values close to 120°, eliminating mismatch between values of phase angles of power supply and load. At supply voltage distortions of more than 30 % voltage in internal circuit of voltage compensation device is regulated by current limitation of inverter.
EFFECT: technical result is increase in speed and accuracy of generation of control signals in order to perform dynamic compensation of voltage distortion on load.
1 cl, 2 dwg
