SU1348920A1 - Transformer-type phase regulator - Google Patents

Abstract

The invention relates to power engineering and can be used for phase control of the voltage of electrical systems and power lines with increased throughput. The aim of the invention is the expansion of re-leveraging capabilities. Transformer phase-shifter contains a three-rod magnetic system 1, the first three-phase winding 2 with branches, one of which is connected to the input terminals 3-5, the second three-phase winding 6 with branches, the coils of which are connected in series with the different-sized catup cords first winding through semiconductor switches 7 and through a two-position switch 8, which provides connection of different like coils of the first and second windings 2, 6. To the branches of the second winding 6 through semiconductor switches Lines 9 are connected to output terminals 10 - 12. A two-position switch 13 is designed to change the order of the alternating phases of the output voltage. 3 il. (L 00 00 with to

Description

The invention relates to power engineering and can be used for phase control of the voltage of electrical systems and power lines with increased throughput.

The purpose of the invention is to expand the adjustment capabilities, including expanding the range of adjustment of the phase shift between the input and output voltages at the constant of their modules, independent regulation of the module and phase of the output voltage.

FIG. I shows a schematic diagram; in fig. 2 and 3 are vector diagrams illustrating the operation of the device.

The phase controller contains a three-rod magnetic system I, the first three-phase winding 2 with branches, one of which (intermediate) is connected to the input terminals 3-5, the second three-phase winding with branches 6, the coils of which are connected in series with the opposite coils of the first winding through semiconductor switches 7 and through two-way switch 8, which provides connection of different opposite coils of the first and second windings. To the branches of the second winding 6, output clamps 10-12 are connected via semiconductor switches 9. The on / off switch 13 is designed to change the order of the alternating phases of the output voltage.

Photoregulator works as follows, in the image.

When the phase regulator is connected to a three-phase network, windings 2 induce EMF systems 14–16 (Figs. 2, 3). An emf 17, corresponding to the working branch of the winding 2, collapses with the emf 18, corresponding to the working branch of the winding 6, with the result that a voltage system 19 having a positive phase shift (fig. 2) appears at the output terminals at one position of the switch 8 and negative phase shift - at a different position of the switch 8.

The regulation of the number of turns of the common windings ensures the constancy of the output voltage module during the regulation of phase

0

five

0

five

0

shear, while the regulation is carried out according to the law

e K. + where 6 is the desired phase shift;

e - the basis of natural logarithms;

j is the symbol of a single imaginary number; Kg - the working part of the first winding 2; Kv is the working part of the second winding 6. Switching switch 8 provides a change in the sign of the phase shift, and switching switch 13 changes the order of the alternating phases of the output voltage.

Claims (1)

Invention Formula A transformer phase-shifter containing a three-rod magnetic system and two symmetric three-phase windings located on the rods of the magnetic circuit, the first winding being connected in a star, and the coils of the second winding are connected to the non-named coils of the first winding sequentially, different in that, in order to expand the adjustments capabilities, phase regulator is equipped with semiconductor switches, two-position three-phase switches, all windings are made with branches, input terminals are connected to the intermediate branches of the first winding, the coils of the second winding are connected to the coils of the first winding through semiconductor switches providing connection to any branches of the coils of the first winding, as well as through a two-point three-phase switch providing connection to the coils of the first winding of different different coils the second winding, and the output terminals are connected to the coil. The second winding is also connected via semiconductor switches, ensuring their connection to any branches of the coils the second winding, and through another two-position three-phase switch, designed to change the order of the alternating phases of the output voltage. ..j Compiled by V. Gsri.x Tehred I. VeresKorrektor M. M to imishinep Circulation 696 Subscription VNIIPI USSR State Committee on the case of inventions and discoveries I 13035, LA, F - 35, Raushsk Emb. 4/5 Production and Printing Enterprise, Uzhgorod, ul. Project, 4 Editor T. Mazorenko Order 4804/53