SU521557A1 - Automatic capacitor bank regulator - Google Patents

Description

(54) AUTOMATIC CONDENSATOR REGULATOR

BATTERIES

in electrical systems with a large equivalent inductive impedance, which reduces the control accuracy and does not allow in this case to use the same regulator to control batteries with dead-band input current In order to reduce the effect of even harmonics on the width of the dead zone, simplifying design with the simultaneous possibility of obtaining another insensitivity zone for the input current in the proposed automatic regulator of the capacitor battery output relay contact is included A parallel part of the resistor, the one-shot output is connected to a time-delay organ consisting of an input transistor, a HC — a recharge circuit, a field-effect transistor and a tunnel diode, the capacitor of the recharge circuit being connected between the source and the gate of the field-effect transistor, tunnel diode and resistor connected to the actuator trigger input

In addition, part of the secondary winding of the transformer is shunted by a chain of successively connected resistors and an output relay contact.

FIG. 1 shows the structural scheme of the proposed controller; in fig. 2 - the same, schematic diagram.

The regulator contains an input current transformer 1 with an open secondary winding connected in opposite to the primary winding of the input voltage transformer 2 with a series of series-connected resistors 3 and contact 4 of the output relay 5, rectifier 6, made on diodes 7 and 8, integrating - a chain 9 with a discharge resistor 1O, a capacitor 11, a voltage deviation sensor 12, which is a measuring bridge, in one arm of which a chain of temperature-compensated zener diodes 13 is connected, and the other is a discharge re Zistor 10, adjustable for possible setting settings for switching on and off, diagonals 14 and 15c with a resistor in diagonal, AC amplifier 16 on transistors 1 and 2, made in a cascade circuit to increase the gain factor, one-shot 17, performed on transistors 18 and 19, a time transducer 20 with an input transistor 21, a recharge circuit, consisting of a capacitor 22, a resistor 23 and 24, a field-effect transistor 25 with a drain circuit of a series-connected resistor 26 and a tunnel diode 27, an actuating trigger 28 on the tr nzistorah 29 and 30 to the output relay 5.

The regulator works as follows.

The voltage proportional to the input current 1, taken from the secondary winding of the transformer 2, is subtracted from the input voltage U so that the difference in the implementation of counter-regulation is applied to the primary winding of the transformer 2. The voltage removed from its secondary winding is extracted by diodes 7 and 8 and goes to an integrating chain consisting of a resistor 31, a capacitor 11 and a resistor 10. On the resistor 10, pulses are extracted, the amplitude of which, at a certain ratio of constant charge time T and times p where T is the period of the siege Gy (. Gr5 G: vT) of the main frequency, proportional to the actual value of the input voltage.

The pulsating voltage U of the capacitor from the resistor 1O is fed to the input of the voltage deviation sensor, where it is compared to pp. the transition of the diode 14 with a given Zener diode 13 voltage UQ.

If the resulting input voltage is higher than the setting specified by the position of the lower regulator of the resistor Yu and the shunted part (lower zone boundary), diode 14 periodically opens and current pulses flow through the resistor 32 to the input of amplifiers 33 and 34, exciting a one-shot vibrator 18 and 19, at the input of which in this case there are rectangular pulses. Transformed by a capacitor 35 into a constant voltage, they are fed to the input of a transistor 21 of a time delay organ 20.

Transistor 21 is open, and the recharge circuit, consisting of capacitor 22 and resistor 23, is connected to voltage UQ, with a plus on the top plate of the capacitor 22, and a negative one on the bottom plate, the field effect transistor 25 is open the potential, the actuator transistor 36 is in the saturation state, the transistor 37 is in the cutoff state.

The coil of the output relay 5 does not flow around the current, its contacts 4, 38, and 39 are in the initial state, and the capacitor to the battery is disconnected.

Claims (2)

When the resulting input voltage is lowered below the lower boundary of the zone, the diode 14 closes, the pulses at the outputs of the amplifier and the one-shot disappear. The transistor 21 closes, switching the recharge circuit of the capacitor 22, resistors 23 and 24 to UQ, the capacitor 22 begins to recharge with opposite polarity and the current in the dead circuit of the transistor 25 decreases when the voltage of the capacitor 22 approaches the tunnel diode 27, the voltage jumps in the direction of its sharp decrease, which leads to switching of the actuating trigger and the operation of relay 5, which, by contact 38, changes the setting to a value specified only by the lower per: resistor and 10 (upper boundary of the zone), contact 39 turns on a capacitor battery, while time-delay organ 2O does not return to its original state, but remains as it was, as the capacitor continues to recharge until the voltage UQ creates a time delay for operation the opposite direction. Thus, the work of the organ 2 О time delay in both directions occurs, providing the necessary delay both when switching on and when disconnecting the capacitor battery. The battery disconnection occurs when the resulting voltage exceeds the upper limit of the zone, if the duration of this excess exceeds the shutdown time delay. If it is necessary to adjust with the dead zone according to the input current, the regulator sets the required upper boundary of the zone, and by changing the branch of the transrbactor - the lower one. Claim 1. An automatic regulator of a capacitor battery, containing an input current transformer with an open secondary winding, connected opposite the primary winding of an input voltage transformer, is connected in series to a KOTopoixj windrower, integrating HC - with an R & a transistor, a voltage deviation sensor, an amplifier and a single-shot, as well as a time delay organ and an actuator trigger with an output relay, characterized in that, in order to increase the sensitivity This design simplifies the output relay contact in parallel with a part of the discharge resistor, the output of the one-shot is connected to a time delay organ consisting of an input transistor, a recharge circuit, a field-effect transistor and a tunnel diode, with a recharge circuit capacitor connected between the source and the gate a field-effect transistor, and the drain circuit of a series-connected tunnel diode and resistor is connected to the input of an actuating flip-flop. 2. The regulator according to claim 1, characterized in that, in order to obtain an input current deadband, part of the secondary winding of the input current transformer is shunted by a series of resistors and contact of the output relay. Sources of information taken into account in the examination: 1. The author's certificate number 154919, cl. H 02 p 13/06, 1962 2. The author's certificate number 477513, cl. H 02 R 13/06, 1972 FFrRT r OUSE u & 2