SU1224946A1 - Device for controlling single-phase reactor with biasing - Google Patents

Abstract

The excerpt relates to the field of electrical engineering and can be used to increase the speed of control of single-phase biasing reactors. When the device operates in the forcing mode, the Differentiating unit 10, which delivers a control pulse to the thyristor 5, operates; the 1I unit in this case does not work. The thyristor 5 is opened, and the discharge of the capacitor 12 occurs, the parameters of which are chosen so that an oscillating (periodic) discharge appears in this chain, the thyristor 5 closes when the current passes through zero, and the capacitor 12 is charged again. The current pulse generated during the discharge magnetically magnetises the magnetic conductor of the reactor 18, and then pick up the control current of the power unit 1 of the normal mode and the reactor 18 enters the new mode of operation. (L with with 1C 1C 4; about 4 Oi

Description

When the control signal decreases, the differentiating

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The invention relates to electrical engineering, namely, control devices for single-phase reactors with magnetization and can be used to increase their speed.

The purpose of the invention is to improve the circuitry of the device and increase the speed.

The drawing shows a diagram of a device for controlling a single-phase reactor.

A device for controlling a single-phase reactor with bias contains a normal-mode power unit 1 and a forcing unit 2, ka; 5; and, the third of which contains thyristors 3-6 connected to control winding 7, the inputs of these units are connected to the thyristor control unit 8, to the input of which the source 9 of the control signal is connected.

 Moreover, the forcing unit is made in the form of two differentiating β-blocks 10 and P, each of which is connected to the thyristor control unit and the output to the control electrodes of the commutator, 5 and 6j diodes, which through the capacitor; -; 12 and 13 are connected to the opposite terminals of control winding 5 to other stages of which are connected to the cathode comm cathodes; resistors, common point capacitor and commuting thyristors are connected to oppositely connected charging diodes 14 and 15, the anodes, which are connected to the positive side of the constant voltage source, the negative side of which is connected to the cathodes of the other two diodes 16 and 7, whose anodes are connected with the output winding 7 control.

The device works like a trail.

When the device is operated to control a single-phase reactor with magnetization in the forcing mode

block 11,;

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block 10 not work

There is a differential differential unit 10, which gives a control pulse to the thyristor 5, unit 1 in this case does not work. The thyristor 5 is released, and the capacitor is discharged through the 12-5-7 chain. The parameters of capacitor 12 are chosen so that an oscillatory (periodic) pa: det appears in this chain. Thyristor 5 at current i, j transforms through zero, closes, and only current pulse flows in the discharge circuit, and capacitance 12 is charged again before the voltage U |. | j ,. The current arising from the discharge of the current pulses from the pulsed magnetic current of the reactor 18 and then comes to the control current jj of the cell 1 of the normal mode, and the reactor 18 is almost without time comes to a new operating mode ip, decreasing the control signal U, the P J block is working, and the to block is not working. The pulse is applied to the opening of the thyristor 6, at sTOisi, the current pulse i is negative and directed against the control current i. Providing a frequency of current oscillations at a periodic discharge equal to, for example, 50 Hz, is provided with a speed of - Bke, which in time is 0.01 s,

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A device for controlling a single phase reactor with magnetic biasing, containing a normal power unit and a force unit, each

FROM which the thyristors connected to the control make, the inputs of these blocks are connected to the thyristors control unit, the source of the control signal is connected to the input of the unit, characterized in that, to simplify and improve speed, the force unit vyppopnen in the form of two

3 12249464

differentiating blocks, each arm of thyristors, the common point of coniz whose inputs are connected to block capacitors and thyristor control commuting thyristors, and the output-ditch is connected to counter-inclusions - to control electrodes of the charge diodes, the anodes of which

commuting thyristors, the anodes j are connected to the positive source of the sources through a capacitor connected to a constant voltage minus

with opposite transducers whose winding-output is connected to the cathodes

control, to other terminals of other diodes, the anodes of which are connected to the commutation cathodes with the control winding terminals.

Claims (1)

Claim Device for controlling a single-phase bias reactor containing a power unit of normal The mode and the boost unit, each of which contains thyristors connected to the control winding, the inputs of these units are connected to the thyristor control unit, to the input of which a control signal source is connected, characterized in that, for the purpose of simplifying and increasing speed, the boost unit is made in the form of two differentiating blocks, each of which is connected by inputs to the thyristor control unit, and by outputs - to control electrodes of switching thyristors, the anodes of which are connected through the capacitors to the opposite the terminal leads of the control winding, to the other terminals of which the cathodes of switching 1224946 4 thyristors are connected, the common point of the capacitors and switching thyristors is connected to the counter-connected charging diodes, the anodes of which are connected to the positive terminal of the DC voltage source. The minus terminal of which is connected to the cathodes of two other diodes. which are connected to the terminals of the control winding.