RU2396695C1 - Electromechanical control device - Google Patents

Abstract

FIELD: electricity. ^ SUBSTANCE: to the proposed device there introduced is unit of automatic power controls and unit of automatic trigging devices; at that, output of motor control panel is connected to the first input of automatic trigging device having the second input connected to output of unit of automatic power controls, the group of inputs of which is connected to group of outputs of unit of automatic trigging devices, the input of which is connected to output of three-phase rectifier. ^ EFFECT: increasing economy of power resources. ^ 1 dwg

Description

The invention relates to the field of electromechanics and can be used to control the generator shaft.

A device for electromechanical control is described in the book of V.K. Kitaev "Electrical Engineering with the Basics of Industrial Electronics" M., 1985, pp. 138-140. In it, an engine, which can be internal combustion, or diesel is rigidly connected to the shaft of a synchronous generator generating three-phase alternating voltage. The engine can be controlled using the remote control. An actuator can be rigidly connected to the motor shaft, for example, a drive, a gearbox, a pair of wheels, a propeller, a propeller. However, after turning off the engine, the shaft rotation time cannot be increased.

A device for electromechanical control, which is part of an autonomous power supply system described in the patent of the author No. 2284644, bull. No. 27 of September 27, 2006. It may include the same units as in the aforementioned analogue, that is, the motor shaft can be rigidly connected to the shaft of the synchronous generator. In addition, the shaft of the DC motor is rigidly connected to the generator. The latter can be rigidly connected with the actuator in the form of a pair of wheels, a propeller, etc. However, the time of inertial rotation of the shaft after the motor is turned off can be increased by ensuring that the constant voltage from the output of the three-phase rectifier is maintained by automatically regulating it before it enters the motor input through an automatic release. At the same time, three phases enter the input of a three-phase rectifier from a synchronous generator. However, there is no increase in the time of rotation of the shaft in the inertial mode after turning off the engine at different speeds of rotation of its shaft, which limits energy savings.

Using the proposed device increases energy savings. This is achieved by introducing a block of automatic power regulators and a block of automatic trip units, while the output of the engine control panel is connected to the first input of an automatic trip unit having a second input connected to the output of the block of automatic power regulators, the input group of which is connected to the group of outputs of the block of automatic trip units, whose input connected to the output of a three-phase rectifier.

In the drawing and in the text, the following notation:

1 - actuator;

2 - a direct current electric motor;

3 - synchronous generator;

4 - engine;

5 - automatic release;

6 - three-phase rectifier;

7 - engine control panel;

8 - block automatic power regulators;

9 - block automatic releases,

wherein the actuator 1 is rigidly connected to the DC motor 2, having a rigid connection with the synchronous generator 3, having first, second and third outputs connected respectively to the first, second and third inputs of a three-phase rectifier and having a hard connection with the motor 4, the input of which connected to the output of the engine control panel 7 and to the first input of the automatic release 5 having an output and a second input, respectively connected to the input of the aforementioned electric motor 2 and to the output of the automatic unit eskih regulators supply 8 having an input group connected to the group output unit automatic trip unit 9, the input of which is connected to the output of the aforementioned three-phase rectifier 6. The apparatus operates as follows.

The engine 4, which can be internal combustion or diesel, provides rotation of the shaft at different frequencies and is rigidly connected to a synchronous generator 3, rigidly connected through the shaft to a DC motor 2, which is rigidly connected to the actuator 1. As the latter, a drive can be used , gearbox, wheelset, propeller, propeller. In this case, the engine 4 is turned on by issuing an electric signal to its input from the output of the engine control panel 7. After turning off the engine 4 and stopping the output of the signal from the engine control panel 7, the shaft of the synchronous generator 3 will continue to rotate inertia together with the shaft of the electric motor 2 and actuator 1. An alternating three-phase voltage from a synchronous generator 3 is supplied to a three-phase rectifier 6, where it is converted to constant and then goes to the block of automatic couplings 9. In this block, depending on the voltage value from the rectifier, depending on the shaft speed, a certain trip unit is activated. Each release operates at a certain voltage range and passes voltage from the rectifier 6 to the corresponding automatic power regulator of the automatic power regulator 8. The number of automatic power regulators in block 8 is equal to the number of automatic releases in the block 9. Regardless of the voltage in a certain voltage range the input of the corresponding voltage regulator of block 8, at its output there will be a rated voltage that passes through the circuit aromatic release 5 to the electric motor 2, only when the motor 4 is switched off and there is no signal from the remote control 7, at the first input of the release 5, and also if there is voltage from the unit 8 at its second input, which confirms the presence of rotation of the shaft. However, after the motor 4 is turned on and the inhibitory signal appears at the aforementioned first input of the automatic release 5, the passage of voltage through its second input to the input of the electric motor 2 is stopped.

An example of a specific embodiment of an automatic trip unit is presented in the book by ES Traube and VG Mirgorodsky “Electrical Engineering and Fundamentals of Electronics”, 1985, pp. 142-143, and an example of an automatic voltage regulator as part of a block of the same regulators, presented as stabilizers , are set out in the book by M.A.Shustov “Power Sources and Stabilizers”, book 2, 2007, Moscow: Publishing House “Dodeca XXI Altax House”, p. 87. Thus, the time of inertial rotation of the shaft increases when the engine is turned off at different speeds of rotation of the shaft due to the supply of voltage to the input of the electric motor with the engine turned off, and an increase in energy savings is provided.

The device can be used in systems that provide rotation of the generator shaft to ensure the operation of the actuator in the inertial mode of rotation of the shaft with the engine turned off.

The device can also be used to provide power to consumers.

Claims (1)

An electromechanical control device consisting of an engine, an engine control panel, a synchronous generator, a direct current electric motor, a three-phase rectifier, an automatic trip unit and an actuator, where the actuator is rigidly connected to a direct current electric motor having a rigid connection with the synchronous generator, rigidly connected to the engine, the input of which is connected to the output of the engine control panel, and the output of the automatic release is connected to the input of the electric motor DC, in addition, the first, second and third outputs of the synchronous generator are respectively connected to the first, second and third inputs of a three-phase rectifier, characterized in that the block of automatic power regulators and the block of automatic releases are introduced, while the output of the motor control panel is connected to the first input an automatic release having a second input connected to the output of the block of automatic power regulators, the group of inputs of which is connected to the group of outputs of the block of automatic releases Leu, whose input is connected to the output of three-phase rectifier.