METHOD FOR COMPENSATION OF VOLTAGE ASYMMETRY IN A THREE-PHASE NETWORK Russian patent published in 2023 - IPC H02J3/18 

FIELD: electrical engineering.

SUBSTANCE: invention is used in the field of electrical engineering to ensure stable operation of the electrical complex in emergency modes of operation, created as a result of asymmetry of phase voltages. According to the method, the instantaneous values of the phase voltages of the network are measured, according to which the instantaneous values of the symmetrical components of the voltage of the direct, reverse and zero sequence are distinguished. The deviations of the calculated symmetrical components from the job voltages are obtained and used as control actions. Moreover, the output signals obtained after the transformation of control actions by multichannel controllers are additionally summed up, converted from Cartesian to phase coordinate systems, synchronized and rotating with the frequency of the supply network, and fed to the control unit of the balancing device.

EFFECT: elimination of the influence of asymmetric consumer loads on the quality indicators of a three-phase electrical network.

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