RU98601U1 - CONTROL AND TEST COMPLEX FOR CHECKING ELECTRICAL CONVERTERS - Google Patents

Abstract

 1. A control and verification complex for checking electrical converters, comprising a power source, a load unit and measurement channels for monitoring parameters, characterized in that it contains a programmable power source and a service power source as a power source, in addition, it additionally contains a control unit, normalizer unit, electronic load unit and personal computer, which is connected to the programmable power supply and electronic load unit via the expansion comport board ki, and through the relay input / output board is connected to the load unit and the control unit, the outputs of which are connected to the inputs of the control object, and the outputs of the control object through the load unit are connected to the inputs of the electronic load and the inputs of the normalizer block, while the outputs of the normalizer block are connected to the board an analog-to-digital converter of a personal computer, and the input of the normalizer block is connected to a service source, which, through the relay I / O board, supplies voltage to the control unit, which depending and the computer teams commutes load unit and through the launch of the converter module controls the soft start control object. ! 2. The control and verification complex according to claim 1, characterized in that the control unit comprises a converter start-up module, a diagnostic module and an indication module that controls the inclusion of an external indicator, while the input of the diagnostic module is connected to a programmable power source, and the output through the load unit is connected with the input of the electronic load unit, and the output of the launch module is converted

Description

The utility model relates to measuring equipment, namely, devices for monitoring and measuring the electrical parameters of aircraft equipment, in particular, for monitoring and measuring the electrical parameters of the electrical voltage converters of helicopters such as Mi-8, Mi-8MTV, Mi-171, etc. The testing complex is designed to control and verify electrical voltage converters of various capacities, namely: a single-phase static converter SPO-9; single-phase converter PO-500; single-phase converter PO-600S; single-phase converter PO-750; single-phase converter PO-1500; three-phase static converter PTS-800 BM; three-phase converter PT-125TS; three-phase converter PT-200Ts; three-phase converter PT-500TS (B); three-phase converter ПТ-1000ЦС.

At present, the monitoring and measurement of the parameters of the electrical voltage converters of the Mi-8, Mi-17, Mi-171 helicopters and others are carried out using the test setup of the UPP-1 converters in accordance with the Technical Description and Operating Instructions No. 8E2.700.031 TO (see appendix 1). Installation test converters UPP contains remote control converters PP-1, a load simulator of converters INP-1 and a set of connecting harnesses. The control panel for converters is a metal structure, which includes switching equipment and channels for measuring controlled parameters, in the form of voltmeters, ammeters, a frequency meter, switches of measurement circuits, and other equipment. Power supply of the installation, instrumentation and equipment under test is carried out from the workshop power sources. This solution is selected as a prototype.

A disadvantage of the known solution is its high laboriousness, since it is necessary to use a large number of individual instruments for measurements and the entire verification process is carried out manually, significant dimensions of the installation for verification, as well as low accuracy of measurements, due to the influence of the human factor and the use of obsolete equipment.

The objective of the claimed solution is to reduce operating and time costs, increase the accuracy and reliability of measurements, as well as increase the convenience of the verification process and the ability to maintain an electronic database of inspections.

This goal is achieved due to the fact that in the well-known test complex for checking electrical converters, containing a power source, a load unit and measurement channels of controlled parameters, it contains a programmable power source, a service power source and an uninterruptible power supply unit, in addition to Moreover, it additionally contains a control unit, a unit of normalizers, an electronic load unit and a personal computer, which is connected to the comport expansion board programmable power supply and electronic load unit, and through a relay input / output board is connected to the load unit and control unit, the outputs of which are connected to the inputs of the control object, and the outputs of the control object through the load unit are connected to the inputs of the electronic load and the inputs of the normalizer block, while the outputs of the normalizer block are connected to the analog-to-digital converter board of the personal computer, and the input of the normalizer block is connected to the service source, which is through the relay input / output board The ode supplies voltage to the control unit, which, depending on the computer command, switches the load unit and through the converter start module controls the soft starter of the control object. And also due to the fact that the control unit contains a converter start module, a diagnostic module and an indication module.

The technical result from the use of the claimed solution is that the claimed combination of features provides the formation of a power circuit and a load circuit for conducting checks of single-phase and three-phase electrical converters in accordance with the documentation (TU, RE, etc.), setting the values required for testing supply voltage and load current, control and measurement of input and output circuit parameters of the tested converter in accordance with the technical operation manual and those nical conditions, as well as the mathematical processing and storage of results, preparation and formation of the form of the test results report. The technical result from the use of the claimed solution is also to increase the reliability and reliability of the results of a comprehensive check of electric voltage converters in all modes of their operation, as well as the possibility of conducting fully automated checks and creating, on the basis of a complex of compact automated workstations for monitoring, troubleshooting and repair of electrical converters helicopter voltage, providing higher accuracy of quality control and providing diagnostics of their malfunctions.

The claimed solution is a complex that performs diagnostics and verification of electric voltage converters of helicopters in automatic mode, using software, which allows to reduce the influence of the human factor on the accuracy of measurements and reduce the time spent on checking the operability of the equipment.

The claimed combination of features is not known to the applicant from available sources of information.

The claimed solution is illustrated by drawings, where figure 1 shows a block diagram of a device.

Testing complex for monitoring and checking electric voltage converters (hereinafter referred to as the complex), contains an adjustable power supply 1 by 27 V, a power strip 2 connected to a 220 V industrial network, a personal computer 3, an expansion card for comports 4, a relay I / O card 5, A / D converter board 6, 24 V power supply 7, line filter 8, control unit 9, load block 10, electronic load 11, normalizer 12, uninterruptible power supply 13.

A programmable power supply 1 by 27 V, through a line filter 2 (30 A) connected to an industrial network 220 V. Power source 1 is intended for powering the monitoring object, forming a power supply of 27 V 100 A and measuring currents of consumption and supply voltage. Power source 1 consists of two parallel connected power sources: DC GEN 40-85, voltage 0-40 V, power up to 6 kW. The control of the programmable power supply 1 (switching on, turning off, adjusting the source) is carried out by a personal computer 3 through an expansion card for comports 4 via a serial RS interface. The personal computer 3 also contains a relay input / output board 5 and an analog-to-digital converter board 6. The service power supply 7 is connected to the industrial network through a line filter 8 (16 A) and supplies voltage through the relay input / output board 5 at the command of the personal computer 3 to the control unit 9 and the load unit 10. The control unit 9 contains a drive module for converters 14, a diagnostic module 15, an indication module 16, which controls the inclusion of an external indicator (light), the corresponding control object and mode e go check. The control unit 9 provides switching internal soft starters; diagnostics of power circuits of the complex; an indication of the modes, depending on the configuration of the load block 10. The load block 10 provides switching of three electronic loads according to the star, delta, or connection of single-phase converters with electronic load 11.

Through the contactors of the load unit 10, the voltage from the output of the test object is supplied to the electronic load 11, and through the normalizer 12 to the board of the analog-to-digital converter 6 of the personal computer 3. The normalizer block 12 consists of three resistor dividers and a normalizer module and is designed for galvanic isolation of power circuits and input circuits of the board of the analog-to-digital converter 6 and for converting analog signals of 127 V / 50 Hz, 115 V / 400 Hz, 36 V / 400 Hz to a voltage of ± 5 V or ± 10 V for further processing in a PC.

The block of normalizers 12 together with PC 3 provide: measurement of the coefficient of nonlinear distortion (THD); rms voltage measurement; frequency measurement; determination of phase rotation; load current measurement; determination of power factor; power measurement; display on the computer screen instantaneous values of current and voltage.

The uninterruptible power supply 13 is designed to power a personal computer 3.

Personal computer 3 provides control of all units of the complex, displaying the progress of the test, as well as collecting, processing, storing information about the equipment being checked.

In terms of design, the complex is made on a modular basis.

The control and verification complex has several operating modes, including:

1) automatic verification mode;

2) manual verification mode;

3) the mode of integrated control of the health of the complex.

Diagnostic tests are preliminarily generated, which can be generated, for example, based on the manufacturer's specifications.

Before starting the test, install the test transducer (object of control) on the desktop of the control and testing complex, conduct an external examination for the absence of mechanical damage to the control box, case, brackets of protective tapes and caps.

Using the connection harnesses, the control object is connected to the complex. The indicators monitor the health of the complex and the correct connection of the monitoring object.

In the testing mode of the complex, the programmable source 1 is closed through the diagnostic module 15 and the load block 10 to the inputs of the electronic load block 11. After that, the readings are taken and a conclusion is made about the health of the complex. At the same time, the diagnostic module 15 provides various types of protection against external cables of the monitoring object (in the testing mode of the complex, the monitoring object is not connected).

To check the next object of control, the service power supply 7 through the relay input / output board 5 supplies voltage to the control unit 9, which, by the command of computer 3, switches the load unit 10 according to the scheme corresponding to the control object. The personal computer 3 turns on the programmable power supply 1 in accordance with the parameters of the tested transducer (control object), starts it in idle mode through the converter start module 14 and the soft starter integrated in the control object (not shown) and measures the parameters (voltage, frequency, non-linear distortion coefficient) in idle mode.

Then, at the command of the personal computer 3, through the expansion board of the comport 4, the contacts are closed between the electronic load 11 and the load unit 10, as a result of which the electronic load 11 is connected to the outputs of the monitoring object.

The signal from the output of the control object enters through the load block 10 to the input of the electronic load 11 and the input of the block of normalizers 12.

The block of normalizers 12 submits the obtained values of the parameters of the control object to the board of the analog-to-digital converter 6 of the personal computer 3, while normalizing them to the required level. The analog-to-digital converter 6 digitizes the analog-to-digital signal and transmits it to PC 3, which measures the rms values of voltage and current, measures frequency, active power, non-linear distortion coefficient, power factor, phase rotation and displays the results on the screen. The personal computer 3 also displays instantaneous values of currents and voltages, operating in the oscilloscope mode.

The measurement on the input circuits of the control object in all modes is carried out by programmable power supply 1 and transmits data to PC 3. The programmable power supply 1 can carry out checks involving changes in the supply voltage at the input of the control object from 40 to 24 V.

As an example of the complex’s operation, the following are the modes for checking the electrical parameters of a PO-500 single-phase converter:

1. supply voltage 27 V, load off;

2. supply voltage 27 V, load (current 4.35 A, power set 0.9);

3. supply voltage 27 V, load (current 2.2 A, power set 0.9);

4. supply voltage 24.3 V, the load is disconnected;

5. supply voltage 24.3 V, load (current 4.35 A, power set 0.9);

6. supply voltage 24.3 V, load (current 2.2 A, power set 0.9);

7. supply voltage 29.7 V, load off;

8. supply voltage 29.7 V, load (current 4.35 A, power set 0.9);

9. supply voltage 29.7 V, load (current 2.2 A, power set 0.9).

In the process of checking a single-phase converter PO-500, the following parameters are measured:

- output voltage of the converter; output voltage frequency; coefficient of nonlinear distortion of the output voltage; consumption current; converter output voltage adjustment range.

The parameters of the output signals are compared with the reference values. If the deviations of the measured parameters from the reference are within the established tolerances, the object of verification is considered suitable. If the measured parameters deviate from the tolerances, the test object is recognized as defective. All signals measured as a result of the verification are entered into the computer database, and on their basis a verification map of the corresponding object being checked is drawn up.

The list and characteristics of the input and output parameters of the complex are given in the table (Appendix 2).

The hardware of the complex operates under the control of system and application software installed on a PC. The complex software is intended for:

- selection of the operating modes of the complex;

- Providing a convenient user interface for managing inspections and displaying control results;

- simulation of the functioning modes of the tested equipment;

- control of the correct connection of the equipment under test;

- automatic testing of the constituent elements of the complex;

- automated verification of parameters of the equipment under test;

- maintaining a database of inspections;

- generating reports on the results of inspections and printing them

The control and verification complex is an automated system for monitoring and measuring the parameters of electrical voltage converters of the devices of the Mi-8, Mi-17, Mi-171 helicopters and others. It monitors and measures all the necessary parameters of the tested electric converters in accordance with the manuals for technical operation and technical conditions , collection, processing, accumulation and storage of test results, output of test results, maintaining a database for each tested device. All measured values using the software for each type of device are displayed on the monitor screen, and are also stored in the database for this type of device and can be used to verify its operability during operation of the device.

Claims (2)

1. A control and verification complex for checking electrical converters, comprising a power source, a load unit and measurement channels for monitoring parameters, characterized in that it contains a programmable power source and a service power source as a power source, in addition, it additionally contains a control unit, normalizer unit, electronic load unit and personal computer, which is connected to the programmable power supply and electronic load unit via the expansion comport board ki, and through the relay input / output board is connected to the load unit and the control unit, the outputs of which are connected to the inputs of the control object, and the outputs of the control object through the load unit are connected to the inputs of the electronic load and the inputs of the normalizer block, while the outputs of the normalizer block are connected to the board an analog-to-digital converter of a personal computer, and the input of the normalizer block is connected to a service source, which, through the relay I / O board, supplies voltage to the control unit, which depending and the computer teams commutes load unit and through the launch of the converter module controls the soft start control object. 2. The control and verification complex according to claim 1, characterized in that the control unit comprises a converter start-up module, a diagnostic module and an indication module that controls the inclusion of an external indicator, while the input of the diagnostic module is connected to a programmable power source, and the output through the load unit is connected with the input of the electronic load unit, and the output of the converter launch module is connected to the input of the soft starter of the control object.