VOLTAGE CONTROL METHOD OF TRANSFORMER UNDER LOAD Russian patent published in 2021 - IPC H02M5/10 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering and power engineering, in particular to the regulators of the transformation ratio of power transformers. The technical result consists in expanding the range and number of levels of regulation of the output voltage of power transformers with a primary sectioned winding and is achieved by a method of controlling the voltage of the transformer, which consists in monitoring the current and voltage of the supply network, fixing the time intervals at which the voltage and current of the supply network have the same and different signs, measuring the phase shift between the current and the voltage of the supply network and, depending on the requirements for controlling the voltage at the output of the transformer, controlling the semiconductor switch at appropriate fixed time intervals, when performing the sectioned winding of the transformer in the form of two galvanically isolated half-windings with adjusting taps. The voltage control at the transformer output is carried out both separately along one of the galvanically isolated half-windings, and jointly along two galvanically isolated half-windings.

EFFECT: power transformers output voltage expanded.

3 cl, 1 dwg