DEVICE FOR REGULATING VOLTAGE AND METHOD FOR ITS CONTROL Russian patent published in 2017 - IPC H02P13/06 H01F29/04 G05F1/14 G05F1/20 

FIELD: electricity.

SUBSTANCE: for voltage regulation device comprising a transformer, one of whose windings comprises in each phase, are connected in series primary and an adjusting part, at least two switching units, one of which is connected with a branch regulating section, and the other switching node is connected to the extreme output adjusting part. Each switching node comprises a thyristor switch, and the ends of the switching nodes are interconnected to form a common point connected to the common points of the switching nodes of other phases. In each phase of the device there is a current transformer connected between the branch portion and the adjusting key thyristor; In addition, the device in each phase can be connected in series reactor and reactor trip unit connected in parallel with thyristor key connected to the output regulating section extreme. Thyristor key management unit is injected to each phase of the device and the other phases thyristor switches. In the method for regulating the voltage of one embodiment of the regulation is carried out by opening the thyristor keys, switching thyristors thyristor keys from one switching node to another is accomplished by pre-closing thyristor thyristor keys one switching node, followed by the opening of the thyristor thyristor keys of another switching node without interrupting passing through the reactor when switching operating current of the transformer. Alternatively, in the method of regulating the voltage, the regulation is carried out by opening the thyristor keys in phases at increasing voltage is performed as follows: in the rest position thyristor keys connected to the extreme terminals regulating section, left open in all phases, and then close the thyristor switch connected to extreme conclusion of the first phase adjustment portion, and open thyristor switch connected to a branch of this phase adjustment, then the keys sequentially switched thyristor in the other phases, similar to switching triac keys in the first phase; wherein the switching thyristor voltage drop on the key is carried out in reverse order.

EFFECT: provision of rich functionality with the introduction of per-phase voltage control in complete control range by switching thyristor keys alternately in each of the primary winding phase.

5 cl, 1 dwg