SU438053A1 - Fazoregul Tort Nkina - Google Patents

Description

one

The invention is intended to change the voltage phase.

Phase regulators are known, which contain an annular magnetic circuit with windings that are connected to a three-phase network by means of rigidly connected current collectors placed on one axis. However, in known designs, the range of phase change is small.

In order to simplify the design and expand the control range, the proposed phase regulator contains identical winding cores each less than / 3 times the circumference of the magnetic circuit of the winding, connected in series with a metal plate according to an open triangle, and an insulation plate is placed between them on the rest of the magnetic circuit. On this plate and on each of the windings, a current collector is installed at an angle of 120 ° C relative to each other.

FIG. 1 schematically shows a magnetic circuit with windings; in fig. 2 - Phasoregulator electrical circuit.

Phase regulator contains ring magnetic circuit 1, windings 2, movable current collectors 3 (Zv, Sv, 3c), connecting three current-carrying plates 4-6 with winding 2, handle 7, drive with releaser 8, fixing bolt 9, contact panel 10, building 11.

The magnetic core 1 is assembled from annular steel plates. The winding 2 of the phase regulator consists of two windings (2a and 26) connected in series with a consonant connection. Both windings have the same number of turns and are designed for the same voltage. One winding occupies less than one third of the circumference of the magnetic circuit 1. A metal plate 12 is placed between the windings 2a and 26, which connects

windings 2a and 26.

Thus, the two windings 2a and 26, taking into account the length of the metal plate 12 in the gap, occupy about two thirds of the circumference of the magnetic circuit. The free part of the magnetic core is filled with a plate 13 of insulating material. The metal plate 12, the insulation plate 13 and the winding 2 lie in the same plane. Current plates 4-6 flexible conductors

connected to three output terminals 14, to which a three-phase AC voltage from the supply network is supplied. Each current collector 3 has contact with a corresponding carrier plate 4, 5, 6 and winding 2.

The current pickups 3 each consist of two paired contacts 15 and 16 mounted on the tip 17. A spring 18 is placed between the contacts 15 and 16, which helps to create a tight contact between the current carrying plates 4-6 and the winding 2. Contact

between the winding 2 and the current collector 3 is carried out by means of a copper-graphite wheel 19. The current collectors 3 are moved by means of a handle drive 7, a rod 8 rigidly connected to the n-tips 17.

The current collectors 3 are arranged relative to each other at an angle of 120 ° and are rigidly connected to each other by means of tips 17 and a rod 8. When the handle 7 is turned at a certain angle, all three current collectors simultaneously rotate at the same angle. Plate 12 is connected by a flexible conductor to terminal 20.

To put the phase regulator into operation, a three-phase AC line voltage must be connected to the terminals. The zero drive is connected to terminal 21. An adjustable voltage is applied to the object from terminals 20 and 21.

In any position of the handle 7 on the windings 2a and 26 there are only two current collectors, and the third current collector is located on the insulation plate 13.

Let, for example, two current collectors are located on winding 2, and the third current collector on the insulation plate 13. In this case, the part of the winding 2a between the two current collectors Za and 3s has the potential and phase of the current collector Za along its entire length. The part of the winding 26 between the current collectors Sv and 3c along the entire length has the potential and phase of the current collector Sv. The points of the windings 2a and 26 at which the Z and S current collectors are located differ in phase by 120 °. The points of the windings 2a and 26 enclosed between the current collectors Za and Sv have an intermediate phase. If on the winding 2 in the gap between the current collectors Za and Sv one point (metal plate 12) is selected, then the voltage phase of this plate relative to the zero point of the supply network will change as the current collectors move.

When there are 2 pairs of current collectors Za and Sv, or any other change in the phase of the plate 12 relative to the zero point, the winding will occur at 120 °. To further change the phase of the plate 12, it is necessary to transfer the current collector Sv to the insulating plate, and the current collector 3c to the winding 2. In this case, as the current collector moves, the phase will change even 120 °,

i.e. from 120 to 240 °. To change the phase from 240 to 360 °, the current collector is transferred to the insulating plate, and the current collector Sv to the winding 2.

With a full turn of the handle 7, the phase of the plate 12 changes relative to the zero point by 360 °, with the second turn the cycle of the phase change repeats.

When the actuator knob is moved counterclockwise, the phase regulator operates similarly to that described, i.e., the voltage phase can be changed by rotating the phase adjuster actuator handle in any direction.

Subject invention

Phase regulator containing an annular magnetic circuit with windings connected to a three-phase network using rigidly connected current collectors placed on one axis, characterized in that, in order to simplify the design and extend the adjustment range, the phase regulator contains the same ones occupying each less than / of length

the circumference of the magnetic circuit of the winding, connected in series by a metal plate according to the open triangle pattern, and between them on the rest of the magnetic circuit an insulating plate is placed, on

This plate and on each of the windings is set at a current collector at an angle of 120 ° relative to each other.

2o

5c

13