RU2548364C1 - Electromechanical device - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: automatic releaser fixing the voltage between minimum and maximum values, with the input connected to the three-phase rectifier output and the output connected with the third input of the automatic releaser and to the input of the toroidal potentiometer is added to the electromechanical device.

EFFECT: increase of time of rotation of the electric motor shaft at the disconnected DC power supply without using the unhandy stabilization units.

1 dwg

Description

The invention relates to the field of electrical engineering and can be used in power supply and electrical control systems.

Known electromechanical device, which is part of an autonomous power supply system, presented in patent 228464, author Chasovskaya A.A. In it, with the help of a direct current source, which can be either a rectifier or a battery, direct current is supplied through a rheostat, through an automatic release to a direct current electric motor, the shaft of which is rigidly connected to the shaft of a synchronous generator. The device can provide power to the objects and the operation of executive nodes. The rectified direct voltage is supplied through an automatic release to the DC motor, which is disconnected from the rheostat until the voltage drops below the stabilized one. Then the source is connected again, the voltage in the release increases, and the process repeats. However, to increase the time of rotation of the motor shaft without a DC source, additional stabilization units are required.

Known electromechanical device described in patent No. 2461116, author Chasovskaya AA, published in bull. No. 25 dated 09/10/12. Unlike the aforementioned, it uses a drive and a toroidal potentiometer rigidly connected to this drive for stabilization, which reduces bulkiness. It includes an automatic release, which is part of a unit of two automatic releases. However, the device is not able to increase the rotation time of the motor shaft with the DC source turned off without the use of bulky stabilization nodes.

Using the proposed device increases the rotation time of the motor shaft when the power source is disconnected without the use of bulky stabilization nodes. This is achieved by introducing an automatic release of the fixing voltage between the minimum and maximum values, having an input connected to the output of a three-phase rectifier, and an output connected to the third input of the automatic release and to the input of a toroidal potentiometer.

In FIG. 1 and the following notation is used in the text:

1 - direct current source

2 - rheostat

3 - automatic release

4 - DC motor

5 - synchronous generator

6 - drive

7 - toroidal potentiometer

8 - three-phase rectifier

9 - automatic release, fixing the voltage between the minimum and maximum values. The output of the DC source 1 through the rheostat 2 is connected to the first input of the automatic release 3, having a second and third input and the first and second output, respectively connected to the output of the toroidal potentiometer 7, with the output of the automatic release, fixing the voltage between the minimum and maximum values 9 , with the output of the DC motor 4 and with the output of the drive 6, rigidly connected with a toroidal potentiometer 7 having an input connected to the output of the above automatic circuit epithel 9, the input of which is connected to the output of a three-phase rectifier 8, having first, second and third inputs connected respectively to the first, second and third outputs of the synchronous generator 5, rigidly connected with the electric motor 4.

The operation of the device is as follows.

Using a constant current source 1, which can be a rechargeable battery or a rectifier, direct current is supplied through a rheostat 2, an automatic release 3 into a direct current electric motor 4, which is rigidly connected to the generator 5. Using a rheostat 2, the rotation speed of the motor shaft 4 is regulated, and the generator 5 delivers a three-phase alternating voltage to a three-phase rectifier 8, which converts the three-phase alternating voltage to direct, which then passes through an automatic release, fixing voltage between the minimum and maximum values 9, a third input of automatic trip unit 3. The automatic trip unit 9 transmits power, if it is within certain limits. From the output of the automatic trip unit 9, voltages also come through a toroidal potentiometer 7, to the second input of the automatic trip unit 3.

In this case, depending on the excess of the potential arriving at the third input of block 3 over the potential arriving at the second input, a positive or negative voltage will be output from the second output of block 3 to the input of drive 6. As a result, drive 6 is rigidly connected to the toroidal shaft potentiometer 7, will rotate this shaft in one direction or another, changing the voltage at the output of the toroidal potentiometer 7.

As a result, after setting the stabilized voltage at the output of the potentiometer 7, the automatic release 3 will trip and pass the voltage from the output of this potentiometer to the input of the DC motor 4, and will not miss the voltage from the current source 1.

An example of the performance of automatic releases, which can also record the excess of one voltage over another or the absence of excess, is presented in the book "Electrical Engineering and Electronics Basics" ES. Traube and V.T. Mirgorodsky, 1985, M., Higher School, pp. 142-143.

The proposed device can be used in systems where both three-phase voltage consumers and actuating units in the form of wheelsets, screws, gearboxes are used. Due to the lack of bulky stabilizers, weight is reduced. Also, by using the toroidal potential 7, the load on the synchronous generator is reduced and the stabilization possibilities are increased, which ensures an economic effect.

Claims (1)

An electromechanical device consisting of a direct current source, a rheostat of an automatic release, a direct current electric motor, a synchronous generator, a three-phase rectifier, a drive and a toroidal potentiometer, where the output of the direct current source through a rheostat is connected to the first input of the automatic release having a second input and a first output, respectively connected to the output of a toroidal potentiometer and to the input of a DC motor rigidly connected to a synchronous generator the first, second and third outputs, respectively connected to the first, second and third inputs of the three-phase rectifier, and the second output of the aforementioned automatic trip is connected to the input of the drive, rigidly connected with a toroidal potentiometer, characterized in that an automatic trip is entered, fixing the voltage between the minimum and maximum values, having an input connected to the output of a three-phase rectifier, and an output connected to the third input of the automatic release and with the input of a toroidal potentiometer.