SU45666A1 - Device for stabilizing the operation of alternating current alternator - Google Patents

Description

The present invention relates to devices for reglating the alternating current frequency of the alternator. The essence of it lies in the fact that the excitation circuit of the engine, which leads to a stabilized alternator using a thyratron circuit, is connected to the frequency counter of the resonant system.

In FIG. 1 is a schematic diagram of a predetermined device and FIG. 2-corresponding curves of currents and voltages.

The alternator J3, whose frequency must be kept constant, is driven by a DC / 2 motor, the excitation winding of which is powered by a direct current source JO.

A resistor 9 is introduced into the excitation circuit, which is the load for a thyratron rectifier device assembled according to the full-wave current scheme with the midpoint of the anode transformer 8. The grid voltage for the thyratrons 4 and 5 is supplied from the grid transformer 7, between the midpoint of which and the heat chain thyratrons include a bias voltage from a source of power supply 6. The primary winding of the grid transformer is connected to successively connected additional coils wound on a series of jelly heat

(225)

cores placed against vibrating rods 2 frequency meters.

In front of the rod 3, corresponding to a given frequency, supported by a constant, the coil is missing;

On the other hand, katui1s / connected to a network powered by an alternator, whose frequency must be kept constant, are placed against the rods.

In the case when the frequency of the current given by the alternator corresponds to the one required with a large amplitude, the rod 3 vibrates. Other rods, the resonant frequency of which is different from the required one, vibrate with a negligible amplitude. As soon as the alternator's current frequency changes, a different rod begins to vibrate with a large amplitude corresponding to one frequency or another, causing a noticeable electromotive force to be found in P1, it is opposite to it. As a consequence, there is a voltage across the secondary winding of the grid transformer, which, according to FIG. 2, should change the cut-off angle of the anode current flowing through the two thyratron.

A change in the rectified current passing through resistance 9 will change the excitation of the engine, which, in turn, will correspondingly change its speed and, consequently, the alternating current frequency.

FIG. 2, curve 14 depicts the alternating voltage of the secondary winding of the anode transformer E. Curves / 7 and 18 depict the voltage given by the grid transformer. The last curve goes below the x-axis due to the negative bias voltage of source 6. Curve 16 depicts the grid ignition voltage, respectively, the instantaneous voltage value of the anode transformer.

Curve 15 corresponds to the anode current of the thyratron in time.

The moment of ignition of the thyratron is determined by the intersection point of curves 16 and 18. Thus, the anode current curve represents approximately a part of a sinusoid with a cut-off side.

When the voltage value of the grid transformer changes, the intersection point of curves 16 and 18 will shift, which will change the value of the rectified current.

Turning to FIG. 1, it is clear from it that there are two groups of coils with respect to the rod 3 a) left group and b) rights - group. Both of these groups have windings that are wound in opposite directions, as a result of which the EFS that appear in them will diverge by 180. In FIG. 2, curves 16 and 17 refer to the grid voltage of the thyratrons, created respectively by the left and right groups of coils.

To enhance the stabilization, the coils can be wound with a different number of turns, increasing as they move to the edges from the rod 3.

The subject matter of the invention.

Claims (2)

1. A device for stabilizing an alternating current frequency alternator using a regulating system made of a resonant frequency meter, characterized in that against the vibrating rods, in addition to the rod corresponding to the frequency to be stabilized, on the side opposite to the frequency meter coils are additional coils connected in series between the voltage from which the oscillations of the corresponding rods arising in them due to the influence of the corresponding rods is connected to the grids through the grid transformer The rons are used to rectify the voltage of the generator and feed it to the excitation circuit of a DC motor, which leads to a stabilized generator. 2. The form of the device according to claim 1, characterized in that the number of turns in the auxiliary coils is increased as the distance from the rod corresponding to the frequency to be stabilized is removed. Fig1 pappappsssrni /