CN112526264A - Single-phase inverter detection system - Google Patents

Single-phase inverter detection system Download PDF

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Publication number
CN112526264A
CN112526264A CN202011352883.4A CN202011352883A CN112526264A CN 112526264 A CN112526264 A CN 112526264A CN 202011352883 A CN202011352883 A CN 202011352883A CN 112526264 A CN112526264 A CN 112526264A
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China
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control board
main control
logic control
power supply
touch screen
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马明
朱建国
杨凯豪
叶剑锋
张陈
刘海洋
洪振海
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SUZHOU WANSONG ELECTRIC CO Ltd
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SUZHOU WANSONG ELECTRIC CO Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels

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  • General Physics & Mathematics (AREA)
  • Inverter Devices (AREA)

Abstract

The invention discloses a single-phase inverter detection system, which comprises three components, namely a complete machine test bed A, a drive board test bed B and a main control board test bed C, wherein a box body is arranged in the complete machine test bed A, the drive board test bed B and the main control board test bed C, the box body is a test cabinet, a complete machine test module A is arranged in the complete machine test bed A, a drive board test module B is arranged in the drive board test bed B, and a main control board test module C is arranged in the main control board test bed C.

Description

Single-phase inverter detection system
Technical Field
The invention relates to the technical field of power equipment detection, in particular to a single-phase inverter detection system.
Background
A circuit capable of converting direct current into alternating current is called an inverter circuit, and an apparatus for realizing the inverter circuit is called an inverter apparatus, which is also simply referred to as an inverter, and is classified into a single-phase inverter and a three-phase inverter depending on the number of phases of alternating voltage output from the inverter circuit.
In the field of rail transit, subway trains and high-speed train single-phase inverters convert power from a DC110V system into alternating-current 230V voltage to supply power for various electric equipment of trains, the application is wide, and the operation of the inverters needs to be kept stable during the running of the trains.
Disclosure of Invention
The invention mainly solves the technical problem of providing a single-phase inverter detection system which can effectively detect a single-phase inverter used on a motor train unit train, and the detection system is combined with a hardware test bed to effectively analyze the overall operation condition of the single-phase inverter and provide data support for improving the stability of electronic elements of the train.
The single-phase inverter detection system comprises a complete machine test bed A, a drive plate test bed B and a main control board test bed C.
The box body is arranged in the complete machine test bed A, the drive plate test bed B and the main control board test bed C, the box body is a test cabinet, the pipe and the plate of the box body are made of stainless steel, the box body frame and the module are welded in a seamless mode, and the surface of the box body is flat.
The whole machine test bed A is internally provided with a whole machine test module A, the drive plate test bed B is internally provided with a drive plate test module B, the main control board test bed C is internally provided with a main control board test module C, and the whole machine test module A comprises a touch screen A, an industrial control host, a logic control board, a direct current 110V switching power supply, a 6KW programmable direct current power supply and an alternating current load.
The size of the touch screen A is 15 inches, the input power is 24 +/-20% VDC, the screen resolution is 1024 x 768, the brightness is 400, and the contrast is 700: 1, the backlight type adopts an LED, and the display interface adopts a VGA interface.
The input power supply of the industrial control host is 12VDC, the CPU of the industrial control host adopts an Intel Atom E3825 Dual Core SoC, the memory selects DDR3L 1066MHz 4GB, the hard disk is 1TB, the communication mode selects Ethernet, the display interface is VGA, the logic control board selects the input power supply DC110V, the output voltage is 24VDC, and the communication mode selects an RS232 interface.
The DC110V switching power supply selects an input rated voltage of AC220V, an output voltage of DC110V and an output current of 3A.
The programmable direct-current power supply has the input voltage of AC220V and the output voltage of 0-150VDC adjustable output, has the functions of overvoltage, overcurrent, short circuit and output short-circuit protection, can automatically recover after the short circuit is removed, continuously works for 8 hours under full load, has the insulation resistance of not less than 5M omega, and can select an RS232 interface.
The alternating current load converts electric energy into mechanical energy, the parameters of the alternating current load are rated alternating current voltage 220V and rated power 4200W, and the step-adjustable mode is selected as the adjusting mode.
The connection block diagram of the complete machine inspection module of the complete machine test stand A is shown in figure 4, the complete machine inspection module comprises a touch screen, an industrial control host, a logic control panel, a DC110V switching power supply, a 6KW programmable direct current power supply and an alternating current load, the hardware is arranged in the complete machine test stand A,
the working process of the complete machine inspection module of the complete machine test stand A is as follows:
the first step is as follows: the whole machine test bed A is internally provided with a programmable direct current power supply device, the programmable direct current power supply is input by using a digital or encoder, the input power supply is a direct current power supply of which the voltage and the current are regulated by a non-potentiometer, the power of the programmable direct current power supply device is selected to be 6KW, and the programmable direct current power supply device provides a required input power supply for a single-phase inverter;
the second step is that: a logic control board is arranged in the complete machine test bed A, a starting signal device is arranged on the logic control board, a single-phase inverter is started through a starting signal, the single-phase inverter can give a running switching value signal, and the switching value signal is set to be a logic value;
the third step: when the switching value signal of the complete machine test bed A is in a logic value on state, the single-phase inverter increases the load to full load, adopts a mode of stepwise adjustable 100W 11, 200W 11 and 300W 3 and adopts 3 stages, and the power of each stage is respectively as follows: the power of phase 1 is 100W 11, the power of phase 2 is 200W 11, the power of phase 3 is 300W 3, the rated power is 4200W, whether the parameters are normal or not is checked, the normal output voltage is AC220V, the normal fluctuation range of the output voltage is plus 6% to minus 3%, and the harmonic content is less than 5%.
The fourth step: the method comprises the steps of testing the input overvoltage of a single-phase inverter of a complete machine test bed A, firstly, enabling the touch screen power supply to be from a DC110V switch power supply through a touch screen of the complete machine test bed A, enabling a 110VDC power supply and a starting signal to be input to the single-phase inverter, enabling the starting signal to be communicated to a logic control board through the touch screen, enabling the logic control board to send the starting signal, then selecting the single-phase inverter overvoltage test, enabling the touch screen to send the single-phase inverter overvoltage test to the logic control board, enabling the logic control board to automatically start to set the output voltage value of a direct.
And the logic control board automatically detects the operation switching value fed back by the single-phase inverter at the same time, judges whether the single-phase inverter stops or not through the operation switching value, records the overvoltage protection value of the programmable power supply when the single-phase inverter stops, and reports and stores the result.
The fifth step: testing the input undervoltage of the single-phase inverter A of the whole machine test bed,
firstly, a touch screen is used, a touch screen power supply is from a DC110V switch power supply, a 110VDC power supply and a starting signal are input to a single-phase inverter, the starting signal is communicated to a logic control board through the touch screen, the logic control board sends the starting signal, a single-phase inverter under-voltage test is selected, the touch screen sends the single-phase inverter under-voltage test to the logic control board, the logic control board automatically starts to set the output voltage value of the DC programmable power supply through communication, the voltage value is decreased to the under-voltage value, the under-voltage value is set to be 75V, the logic control board simultaneously and automatically detects the operation switching value fed back by the single-phase inverter to judge whether the single-phase inverter is shut down, the.
And a sixth step: and testing the output overcurrent value of the single-phase inverter A of the complete machine test bed.
Through a touch screen of a complete machine test bed A, a touch screen power supply is from a DC110V switch power supply and provides 110VDC voltage and a starting signal for a single-phase inverter, the starting signal is communicated to a logic control panel through the touch screen, the logic control panel sends the starting signal, then the single-phase inverter is selected to output an overcurrent test, the touch screen sends the single-phase inverter to output an overcurrent test to the logic control panel, the logic control panel automatically starts to set a DC programmable power supply through communication, the output voltage value of the DC programmable power supply is DC110V, after the single-phase inverter is normally started and an operation switching value signal fed back by the single-phase inverter is detected, the logic control panel automatically and continuously increases a load through a control contactor to increase the load to the overcurrent value, the overcurrent value is 1.2In, the logic control panel simultaneously and automatically detects the operation switching value signal fed, the magnitude of the load at shutdown is recorded and the results are reported and saved.
The seventh step: and (4) testing the output overload of the single-phase inverter A of the complete machine test bed.
Firstly, a touch screen of a complete machine test bed A gives 110VDC control power and a starting signal to a single-phase inverter, the starting signal is communicated to a logic control board through the touch screen, the logic control board sends the starting signal to select the output overload test of the single-phase inverter, the touch screen sends the output overload test of the single-phase inverter to the logic control board, the logic control board sets the output voltage value of a direct current programmable power supply through communication, the output voltage value of the direct current programmable power supply is initially DC110V, after the single-phase inverter is normally started, and detecting an operation switching value signal fed back by the single-phase inverter, automatically and continuously increasing the load to an overcurrent value by the logic control board through controlling the contactor, selecting 1.2In as the overcurrent value, controlling the logic board to automatically detect whether the operation switching value signal fed back by the single-phase inverter is stopped or not at the same time, recording the size of the load when the single-phase inverter is stopped, and reporting and storing the result.
Eighth step: and testing the output short circuit of the single-phase inverter A of the complete machine test bed.
Firstly, through a touch screen of a complete machine test bed A, 110VDC control power and an opening signal are given to a single-phase inverter, the opening signal is communicated to a logic control panel through the touch screen, the logic control panel sends the opening signal, then a single-phase inverter output short circuit test is selected, the touch screen sends the single-phase inverter output short circuit test to the logic control panel, the logic control panel starts to set the output voltage value of a direct current programmable power supply through communication, the output voltage value of the direct current programmable power supply is initially DC110V, after the single-phase inverter is normally started, an operation switching value signal fed back by the single-phase inverter is detected, then the logic control panel automatically sets a normal load value through a control contactor, the power of the normal load value is 3.5KW, after the starting is finished, the short circuit contactor is automatically started, meanwhile, the logic control panel, and report and save the results.
The ninth step: and testing the full load efficiency of the single-phase inverter A of the complete machine test bed.
Firstly, a single-phase inverter 110VDC control power and a starting signal are given through a touch screen, a single-phase inverter full load efficiency test is selected, the touch screen sends a single-phase inverter full load efficiency test to a logic control board, the logic control board starts to set an output voltage value of a direct-current programmable power supply for communication, the output voltage value of the direct-current programmable power supply is initially DC110V, after the single-phase inverter is normally started, an operation switching value signal fed back by the single-phase inverter is detected, the logic control board automatically sets a full load capacity through a control contactor, after the start is completed, the logic control board automatically detects input voltage, input current, output voltage and output current, automatically calculates, reports and stores results.
The tenth step: the whole machine test bed A and the whole machine test bed module can automatically test related test items through one key of the touch screen, and can store and download test results of the related test items for summarization.
Drive plate test stand B as shown in fig. 5, the drive plate test stand B includes: 15 cun high definition touch-sensitive screen, industrial control host computer, logic control board, test base plate, DC110V switching power supply, drive plate test bench B passes through the relevant detection item of touch-sensitive screen one-touch automatic test, and drive plate test bench B can satisfy output drive, the failure feedback experiment of drive plate.
The drive plate test bed B works as follows:
the first step is as follows: comprehensively detecting, namely fixing a test substrate of a drive board test bed B in a platform, adopting a thimble type test substrate as the test substrate, checking whether each test point is normal through a touch screen, and selecting a test item through the touch screen after the test point is normal;
the second step is that: setting a normal standard numerical value of a drive wave of a drive plate inspection module B, setting a voltage value B-1 of a drive waveform as 15V, and setting a dead zone numerical value as 5 us;
the third step: the drive plate generates waves.
The method comprises the steps that firstly, drive waveform detection is selected through a touch screen of a drive board test bed B, the touch screen sends drive waveform detection signals to a logic control board, the logic control board automatically starts to send drive waves to the drive board, the logic control board automatically detects the voltage value and the dead zone value of the drive waveforms sent by the drive board, the voltage value and the standard value of the drive waveforms are compared, the dead zone value and the standard value are compared, comparison results are compared, and the results are reported and stored.
The fourth step: and the drive plate of the drive plate test bed B drives fault feedback.
Firstly, selecting drive fault feedback detection through a touch screen, sending a drive waveform detection signal to a logic control board by the touch screen, automatically starting sending a drive wave to a drive board by the logic control board, automatically detecting the voltage value of the drive waveform sent by the drive board by the logic control board, wherein the voltage value range of the drive waveform is +/-15V, and whether a dead zone is correct or not, and the dead zone is 5 us;
the fifth step: and the logic control board of the drive board test bed B simulates drive board fault signals of all points, and simultaneously automatically detects whether the drive board stops outputting waves and feeds back the waves, and reports and stores results.
And a sixth step: and each power supply point of the drive board test bed B.
And through a drive board power supply detection option of a touch screen of the drive board test bed B, the logic control board automatically detects whether each power supply point of the drive board is normal or not, and reports and stores results.
As shown in fig. 6, the main control board inspection station C includes a touch screen of the main control board inspection station C, an industrial control host, a logic control board, a DC110V switching power supply, a 500VA programmable variable frequency power supply, a programmable DC power supply, and a test substrate.
According to the preferable technical scheme, the main control board inspection stand C touch screen selects a 15-inch high-definition touch screen
The main control board inspection table C comprises the following working procedures of a main control board inspection module:
the first step is as follows: the main control board inspection bench C is characterized in that a main control board is fixed on a test substrate;
secondly, the main control board inspection bench C performs comprehensive detection, the main control board is electrified through the touch screen, whether each test point is normal or not is detected through the touch screen, and after the test point is normal, a test item is selected through the touch screen;
the third step: testing each power supply point of the main control board inspection bench C:
selecting a main control board power supply for detection through a touch screen, automatically detecting whether each power supply point of the main control board is normal or not by a logic control board, and reporting and storing results;
the fourth step: main control board checkout stand C main control board drive waveform, through main control board checkout stand C touch-sensitive screen, select drive waveform to detect, the touch-sensitive screen sends drive waveform detection signal for logic control board, logic control board passes through the contactor and gives the main control board turn-on signal automatically, logic control board sets up programmable DC power supply through the communication is automatic, give the main control board input sampling normal voltage value, the drive waveform's that logic control board automated inspection main control board sent volt value, drive waveform's volt value is at 15V, dead time 5us, it is correct to detect the setting, and report and save the result.
The fifth step: c, performing temperature feedback simulation on a main control board of the main control board inspection bench;
the temperature feedback detection is selected through a C touch screen of the main control board inspection bench, the touch screen sends a temperature feedback detection signal to the logic control board, the logic control board automatically gives a starting signal to the main control board through the contactor, the logic control board sets a main control board temperature sampling value through the contactor, the main control board temperature sampling value reaches the over-temperature, the over-temperature is set to be +85 ℃, whether the logic control automatic detection main control board sends the over-temperature signal or not is checked, and the result is reported and stored.
And a sixth step: the main control board of the main control board inspection bench C outputs overvoltage feedback, the output overvoltage detection is selected through the main control board inspection bench C touch screen, the touch screen sends an output overvoltage detection signal to the logic control board, the logic control board automatically gives an opening signal to the main control board inspection bench C through a contactor, the logic control board automatically sets a programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a main control board input sampling normal voltage value, the logic control board automatically increases progressively through communication, the programmable variable frequency power supply outputs a main control board input voltage sampling voltage value, when the sampling voltage value reaches an excessive value, the logic control board automatically detects whether the main control board sends a stop signal or not, and reports and saves the result.
The seventh step: the main control board of the main control board inspection bench C outputs the undervoltage feedback;
the method comprises the following steps that output undervoltage detection is selected through a main control board inspection table C touch screen, the main control board inspection table C touch screen sends an output undervoltage detection signal to a logic control board, the logic control board automatically gives a starting signal to the main control board through a contactor, the logic control board automatically sets a programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a sampling normal voltage value to the main control board, the logic control board enables the sampling voltage value to be gradually decreased, when the programmable variable frequency power supply outputs the sampling voltage value of the main control board to reach an undervalue, the logic control board automatically detects whether the main control board sends a shutdown signal, reports and saves the result;
eighth step: the main control board inspection bench C detects the output switching value of the main control board;
the output switching value is selected to be detected through a C touch screen of a main control board inspection bench, the C touch screen of the main control board inspection bench sends an output switching value detection signal to a logic control board, the logic control board automatically gives a main control board starting signal through a contactor, the logic control board automatically sets, so that a programmable variable frequency power supply outputs a main control board input sampling normal voltage value, whether the logic board is normal in detecting the main control board operation switching value or not, the logic control board automatically sets a main control board temperature sampling value, so that the main control board temperature sampling value reaches over-temperature, whether the logic control board detects that the main control board sends an over-temperature signal or not, and reports and saves results.
The ninth step: and the main control board of the main control board inspection bench C outputs overcurrent detection.
The output overcurrent detection is selected through the touch screen, the touch screen sends an output overcurrent detection signal to the logic control board, the logic control board automatically gives a starting signal to the main control board through the contactor, the logic control board automatically sets the programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a normal voltage value, the normal voltage value is DC110V, the logic control board realizes automatic increment of the programmable direct current power supply through communication, the programmable direct current power supply outputs a current sampling overcurrent value to the main control board, the current sampling overcurrent value is selected to be 19A, whether the logic control board stops detecting the control board, and the result is reported and stored.
The tenth step: and (4) the main control board inspection bench C outputs overload detection.
The output overload detection is selected through a C touch screen of a main control panel inspection bench, the touch screen sends an output overload detection signal to a logic control panel, the logic control panel automatically gives a starting signal to the main control panel through a contactor, the logic control panel automatically sets a programmable variable frequency power supply output value through communication, the normal voltage value of the programmable variable frequency power supply output value is DC110V, the logic control panel automatically increases the numerical value of a programmable direct current power supply through communication, the output current of the programmable direct current power supply output main control panel samples an overload numerical value, the logic control panel detects whether the main control panel is shut down or not, and reports and saves results.
The eleventh step: and (4) inputting overvoltage detection into the main control board of the main control board inspection station C.
Through main control board checkout stand C touch-sensitive screen, select main control board checkout stand C input overvoltage detection, the touch-sensitive screen sends input overvoltage detection signal for logic control board, main control board checkout stand C logic control board gives the main control board opening signal through the contactor is automatic, and set up the normal voltage value of programmable variable frequency power output main control board input sampling through the communication is automatic to be increased progressively, programmable variable frequency power output main control board input voltage sampling voltage value reaches the excessive value, logic control board detects whether the main control board sends the shut-down signal simultaneously, the value of the programmable variable frequency power when the record is shut down, and report and save the result.
The twelfth step: and (4) detecting the input undervoltage of the main control board inspection bench C.
Through main control board checkout stand C touch-sensitive screen, select input undervoltage detection, the touch-sensitive screen sends input undervoltage detected signal for logic control board, logic control board gives the main control board turn-on signal through the contactor is automatic, and set up the frequency conversion power supply output main control board input sampling normal voltage value automatically through the communication, progressively decrease through the communication, make the sampling voltage value of frequency conversion power supply output main control board input voltage able to programme reach the undervalue, logic control board detects whether the main control board sends the shut-down signal simultaneously, the value of the frequency conversion power supply able to programme when the record shut down, and report and save the result.
The invention has the beneficial effects that: the single-phase inverter detection system has the advantages that related detection items are automatically tested in a one-key mode, the system is simple, convenient, time-saving and firm, the test results of the related detection items can be stored and downloaded, the traceability is strong, and the time and labor cost for maintaining and detecting the single-phase inverter driving plate are greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of a complete machine test stand A of a single-phase inverter detection system according to the present invention;
FIG. 2 is a schematic structural diagram of a drive board test stand B of the single-phase inverter detection system of the present invention;
FIG. 3 is a schematic structural diagram of a main control board inspection bench C of the single-phase inverter detection system according to the present invention;
FIG. 4 is a connection block diagram of a complete machine inspection module of a complete machine test stand A of the single-phase inverter detection system of the present invention;
FIG. 5 is a block diagram of a drive board verification module of a drive board test stand B of a single phase inverter detection system of the present invention;
FIG. 6 is a block diagram of a main control panel inspection station C of a single-phase inverter detection system of the present invention;
the parts in the drawings are numbered as follows:
the test bed comprises a whole machine test bed A1, a touch screen A1 _1, a drive plate test bed B2 _1, a drive plate test bed B touch screen 2_1, a main control board test bed C3 and a main control board test bed C touch screen 3_ 1.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Referring to fig. 1 and 6, an embodiment of the present invention includes:
the single-phase inverter detection system comprises a complete machine test bed A, a drive plate test bed B and a main control board test bed C.
The box body is arranged in the complete machine test bed A, the drive plate test bed B and the main control board test bed C, the box body is a test cabinet, the pipe and the plate of the box body are made of stainless steel, the box body frame and the module are welded in a seamless mode, and the surface of the box body is flat.
The whole machine test bed A is internally provided with a whole machine test module A, the drive plate test bed B is internally provided with a drive plate test module B, the main control board test bed C is internally provided with a main control board test module C, and the whole machine test module A comprises a touch screen A, an industrial control host, a logic control board, a direct current 110V switching power supply, a 6KW programmable direct current power supply and an alternating current load.
The size of the touch screen A is 15 inches, the input power is 24 +/-20% VDC, the screen resolution is 1024 x 768, the brightness is 400, and the contrast is 700: 1, the backlight type adopts an LED, and the display interface adopts a VGA interface.
The input power supply of the industrial control host is 12VDC, the CPU of the industrial control host adopts an Intel Atom E3825 Dual Core SoC, the memory selects DDR3L 1066MHz 4GB, the hard disk is 1TB, the communication mode selects Ethernet, the display interface is VGA, the logic control board selects the input power supply DC110V, the output voltage is 24VDC, and the communication mode selects an RS232 interface.
The DC110V switching power supply selects an input rated voltage of AC220V, an output voltage of DC110V and an output current of 3A.
The programmable direct-current power supply has the input voltage of AC220V and the output voltage of 0-150VDC adjustable output, has the functions of overvoltage, overcurrent, short circuit and output short-circuit protection, can automatically recover after the short circuit is removed, continuously works for 8 hours under full load, has the insulation resistance of not less than 5M omega, and can select an RS232 interface.
The alternating current load converts electric energy into mechanical energy, the parameters of the alternating current load are rated alternating current voltage 220V and rated power 4200W, and the step-adjustable mode is selected as the adjusting mode.
The connection block diagram of the complete machine inspection module of the complete machine test stand A is shown in figure 4, the complete machine inspection module comprises a touch screen, an industrial control host, a logic control panel, a DC110V switching power supply, a 6KW programmable direct current power supply and an alternating current load, the hardware is arranged in the complete machine test stand A,
the working process of the complete machine inspection module of the complete machine test stand A is as follows:
the first step is as follows: the whole machine test bed A is internally provided with a programmable direct current power supply device, the programmable direct current power supply is input by using a digital or encoder, the input power supply is a direct current power supply of which the voltage and the current are regulated by a non-potentiometer, the power of the programmable direct current power supply device is selected to be 6KW, and the programmable direct current power supply device provides a required input power supply for a single-phase inverter;
the second step is that: a logic control board is arranged in the complete machine test bed A, a starting signal device is arranged on the logic control board, a single-phase inverter is started through a starting signal, the single-phase inverter can give a running switching value signal, and the switching value signal is set to be a logic value;
the third step: when the switching value signal of the complete machine test bed A is in a logic value on state, the single-phase inverter increases the load to full load, adopts a mode of stepwise adjustable 100W 11, 200W 11 and 300W 3 and adopts 3 stages, and the power of each stage is respectively as follows: the power of phase 1 is 100W 11, the power of phase 2 is 200W 11, the power of phase 3 is 300W 3, the rated power is 4200W, whether the parameters are normal or not is checked, the normal output voltage is AC220V, the normal fluctuation range of the output voltage is plus 6% to minus 3%, and the harmonic content is less than 5%.
The fourth step: the method comprises the steps of testing the input overvoltage of a single-phase inverter of a complete machine test bed A, firstly, enabling the touch screen power supply to be from a DC110V switch power supply through a touch screen of the complete machine test bed A, enabling a 110VDC power supply and a starting signal to be input to the single-phase inverter, enabling the starting signal to be communicated to a logic control board through the touch screen, enabling the logic control board to send the starting signal, then selecting the single-phase inverter overvoltage test, enabling the touch screen to send the single-phase inverter overvoltage test to the logic control board, enabling the logic control board to automatically start to set the output voltage value of a direct.
And the logic control board automatically detects the operation switching value fed back by the single-phase inverter at the same time, judges whether the single-phase inverter stops or not through the operation switching value, records the overvoltage protection value of the programmable power supply when the single-phase inverter stops, and reports and stores the result.
The fifth step: testing the input undervoltage of the single-phase inverter A of the whole machine test bed,
firstly, a touch screen is used, a touch screen power supply is from a DC110V switch power supply, a 110VDC power supply and a starting signal are input to a single-phase inverter, the starting signal is communicated to a logic control board through the touch screen, the logic control board sends the starting signal, a single-phase inverter under-voltage test is selected, the touch screen sends the single-phase inverter under-voltage test to the logic control board, the logic control board automatically starts to set the output voltage value of the DC programmable power supply through communication, the voltage value is decreased to the under-voltage value, the under-voltage value is set to be 75V, the logic control board simultaneously and automatically detects the operation switching value fed back by the single-phase inverter to judge whether the single-phase inverter is shut down, the.
And a sixth step: and testing the output overcurrent value of the single-phase inverter A of the complete machine test bed.
Through a touch screen of a complete machine test bed A, a touch screen power supply is from a DC110V switch power supply and provides 110VDC voltage and a starting signal for a single-phase inverter, the starting signal is communicated to a logic control panel through the touch screen, the logic control panel sends the starting signal, then the single-phase inverter is selected to output an overcurrent test, the touch screen sends the single-phase inverter to output an overcurrent test to the logic control panel, the logic control panel automatically starts to set a DC programmable power supply through communication, the output voltage value of the DC programmable power supply is DC110V, after the single-phase inverter is normally started and an operation switching value signal fed back by the single-phase inverter is detected, the logic control panel automatically and continuously increases a load through a control contactor to increase the load to the overcurrent value, the overcurrent value is 1.2In, the logic control panel simultaneously and automatically detects the operation switching value signal fed, the magnitude of the load at shutdown is recorded and the results are reported and saved.
The seventh step: and (4) testing the output overload of the single-phase inverter A of the complete machine test bed.
Firstly, a touch screen of a complete machine test bed A gives 110VDC control power and a starting signal to a single-phase inverter, the starting signal is communicated to a logic control board through the touch screen, the logic control board sends the starting signal to select the output overload test of the single-phase inverter, the touch screen sends the output overload test of the single-phase inverter to the logic control board, the logic control board sets the output voltage value of a direct current programmable power supply through communication, the output voltage value of the direct current programmable power supply is initially DC110V, after the single-phase inverter is normally started, and detecting an operation switching value signal fed back by the single-phase inverter, automatically and continuously increasing the load to an overcurrent value by the logic control board through controlling the contactor, selecting 1.2In as the overcurrent value, controlling the logic board to automatically detect whether the operation switching value signal fed back by the single-phase inverter is stopped or not at the same time, recording the size of the load when the single-phase inverter is stopped, and reporting and storing the result.
Eighth step: and testing the output short circuit of the single-phase inverter A of the complete machine test bed.
Firstly, through a touch screen of a complete machine test bed A, 110VDC control power and an opening signal are given to a single-phase inverter, the opening signal is communicated to a logic control panel through the touch screen, the logic control panel sends the opening signal, then a single-phase inverter output short circuit test is selected, the touch screen sends the single-phase inverter output short circuit test to the logic control panel, the logic control panel starts to set the output voltage value of a direct current programmable power supply through communication, the output voltage value of the direct current programmable power supply is initially DC110V, after the single-phase inverter is normally started, an operation switching value signal fed back by the single-phase inverter is detected, then the logic control panel automatically sets a normal load value through a control contactor, the power of the normal load value is 3.5KW, after the starting is finished, the short circuit contactor is automatically started, meanwhile, the logic control panel, and report and save the results.
The ninth step: and testing the full load efficiency of the single-phase inverter A of the complete machine test bed.
Firstly, a single-phase inverter 110VDC control power and a starting signal are given through a touch screen, a single-phase inverter full load efficiency test is selected, the touch screen sends a single-phase inverter full load efficiency test to a logic control board, the logic control board starts to set an output voltage value of a direct-current programmable power supply for communication, the output voltage value of the direct-current programmable power supply is initially DC110V, after the single-phase inverter is normally started, an operation switching value signal fed back by the single-phase inverter is detected, the logic control board automatically sets a full load capacity through a control contactor, after the start is completed, the logic control board automatically detects input voltage, input current, output voltage and output current, automatically calculates, reports and stores results.
The tenth step: the whole machine test bed A and the whole machine test bed module can automatically test related test items through one key of the touch screen, and can store and download test results of the related test items for summarization.
Drive plate test stand B as shown in fig. 5, the drive plate test stand B includes: 15 cun high definition touch-sensitive screen, industrial control host computer, logic control board, test base plate, DC110V switching power supply, drive plate test bench B passes through the relevant detection item of touch-sensitive screen one-touch automatic test, and drive plate test bench B can satisfy output drive, the failure feedback experiment of drive plate.
The drive plate test bed B works as follows:
the first step is as follows: comprehensively detecting, namely fixing a test substrate of a drive board test bed B in a platform, adopting a thimble type test substrate as the test substrate, checking whether each test point is normal through a touch screen, and selecting a test item through the touch screen after the test point is normal;
the second step is that: setting a normal standard numerical value of a drive wave of a drive plate inspection module B, setting a voltage value B-1 of a drive waveform as 15V, and setting a dead zone numerical value as 5 us;
the third step: the drive plate generates waves.
The method comprises the steps that firstly, drive waveform detection is selected through a touch screen of a drive board test bed B, the touch screen sends drive waveform detection signals to a logic control board, the logic control board automatically starts to send drive waves to the drive board, the logic control board automatically detects the voltage value and the dead zone value of the drive waveforms sent by the drive board, the voltage value and the standard value of the drive waveforms are compared, the dead zone value and the standard value are compared, comparison results are compared, and the results are reported and stored.
The fourth step: and the drive plate of the drive plate test bed B drives fault feedback.
Firstly, selecting drive fault feedback detection through a touch screen, sending a drive waveform detection signal to a logic control board by the touch screen, automatically starting sending a drive wave to a drive board by the logic control board, automatically detecting the voltage value of the drive waveform sent by the drive board by the logic control board, wherein the voltage value range of the drive waveform is +/-15V, and whether a dead zone is correct or not, and the dead zone is 5 us;
the fifth step: and the logic control board of the drive board test bed B simulates drive board fault signals of all points, and simultaneously automatically detects whether the drive board stops outputting waves and feeds back the waves, and reports and stores results.
And a sixth step: and each power supply point of the drive board test bed B.
And through a drive board power supply detection option of a touch screen of the drive board test bed B, the logic control board automatically detects whether each power supply point of the drive board is normal or not, and reports and stores results.
As shown in fig. 6, the main control board inspection station C includes a touch screen of the main control board inspection station C, an industrial control host, a logic control board, a DC110V switching power supply, a 500VA programmable variable frequency power supply, a programmable DC power supply, and a test substrate.
According to the preferable technical scheme, the main control board inspection stand C touch screen selects a 15-inch high-definition touch screen
The main control board inspection table C comprises the following working procedures of a main control board inspection module:
the first step is as follows: the main control board inspection bench C is characterized in that a main control board is fixed on a test substrate;
secondly, the main control board inspection bench C performs comprehensive detection, the main control board is electrified through the touch screen, whether each test point is normal or not is detected through the touch screen, and after the test point is normal, a test item is selected through the touch screen;
the third step: testing each power supply point of the main control board inspection bench C:
selecting a main control board power supply for detection through a touch screen, automatically detecting whether each power supply point of the main control board is normal or not by a logic control board, and reporting and storing results;
the fourth step: main control board checkout stand C main control board drive waveform, through main control board checkout stand C touch-sensitive screen, select drive waveform to detect, the touch-sensitive screen sends drive waveform detection signal for logic control board, logic control board passes through the contactor and gives the main control board turn-on signal automatically, logic control board sets up programmable DC power supply through the communication is automatic, give the main control board input sampling normal voltage value, the drive waveform's that logic control board automated inspection main control board sent volt value, drive waveform's volt value is at 15V, dead time 5us, it is correct to detect the setting, and report and save the result.
The fifth step: c, performing temperature feedback simulation on a main control board of the main control board inspection bench;
the temperature feedback detection is selected through a C touch screen of the main control board inspection bench, the touch screen sends a temperature feedback detection signal to the logic control board, the logic control board automatically gives a starting signal to the main control board through the contactor, the logic control board sets a main control board temperature sampling value through the contactor, the main control board temperature sampling value reaches the over-temperature, the over-temperature is set to be +85 ℃, whether the logic control automatic detection main control board sends the over-temperature signal or not is checked, and the result is reported and stored.
And a sixth step: the main control board of the main control board inspection bench C outputs overvoltage feedback, the output overvoltage detection is selected through the main control board inspection bench C touch screen, the touch screen sends an output overvoltage detection signal to the logic control board, the logic control board automatically gives an opening signal to the main control board inspection bench C through a contactor, the logic control board automatically sets a programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a main control board input sampling normal voltage value, the logic control board automatically increases progressively through communication, the programmable variable frequency power supply outputs a main control board input voltage sampling voltage value, when the sampling voltage value reaches an excessive value, the logic control board automatically detects whether the main control board sends a stop signal or not, and reports and saves the result.
The seventh step: the main control board of the main control board inspection bench C outputs the undervoltage feedback;
the method comprises the following steps that output undervoltage detection is selected through a main control board inspection table C touch screen, the main control board inspection table C touch screen sends an output undervoltage detection signal to a logic control board, the logic control board automatically gives a starting signal to the main control board through a contactor, the logic control board automatically sets a programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a sampling normal voltage value to the main control board, the logic control board enables the sampling voltage value to be gradually decreased, when the programmable variable frequency power supply outputs the sampling voltage value of the main control board to reach an undervalue, the logic control board automatically detects whether the main control board sends a shutdown signal, reports and saves the result;
eighth step: the main control board inspection bench C detects the output switching value of the main control board;
the output switching value is selected to be detected through a C touch screen of a main control board inspection bench, the C touch screen of the main control board inspection bench sends an output switching value detection signal to a logic control board, the logic control board automatically gives a main control board starting signal through a contactor, the logic control board automatically sets, so that a programmable variable frequency power supply outputs a main control board input sampling normal voltage value, whether the logic board is normal in detecting the main control board operation switching value or not, the logic control board automatically sets a main control board temperature sampling value, so that the main control board temperature sampling value reaches over-temperature, whether the logic control board detects that the main control board sends an over-temperature signal or not, and reports and saves results.
The ninth step: and the main control board of the main control board inspection bench C outputs overcurrent detection.
The output overcurrent detection is selected through the touch screen, the touch screen sends an output overcurrent detection signal to the logic control board, the logic control board automatically gives a starting signal to the main control board through the contactor, the logic control board automatically sets the programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a normal voltage value, the normal voltage value is DC110V, the logic control board realizes automatic increment of the programmable direct current power supply through communication, the programmable direct current power supply outputs a current sampling overcurrent value to the main control board, the current sampling overcurrent value is selected to be 19A, whether the logic control board stops detecting the control board, and the result is reported and stored.
The tenth step: and (4) the main control board inspection bench C outputs overload detection.
The output overload detection is selected through a C touch screen of a main control panel inspection bench, the touch screen sends an output overload detection signal to a logic control panel, the logic control panel automatically gives a starting signal to the main control panel through a contactor, the logic control panel automatically sets a programmable variable frequency power supply output value through communication, the normal voltage value of the programmable variable frequency power supply output value is DC110V, the logic control panel automatically increases the numerical value of a programmable direct current power supply through communication, the output current of the programmable direct current power supply output main control panel samples an overload numerical value, the logic control panel detects whether the main control panel is shut down or not, and reports and saves results.
The eleventh step: and (4) inputting overvoltage detection into the main control board of the main control board inspection station C.
Through main control board checkout stand C touch-sensitive screen, select main control board checkout stand C input overvoltage detection, the touch-sensitive screen sends input overvoltage detection signal for logic control board, main control board checkout stand C logic control board gives the main control board opening signal through the contactor is automatic, and set up the normal voltage value of programmable variable frequency power output main control board input sampling through the communication is automatic to be increased progressively, programmable variable frequency power output main control board input voltage sampling voltage value reaches the excessive value, logic control board detects whether the main control board sends the shut-down signal simultaneously, the value of the programmable variable frequency power when the record is shut down, and report and save the result.
The twelfth step: and (4) detecting the input undervoltage of the main control board inspection bench C.
Through main control board checkout stand C touch-sensitive screen, select input undervoltage detection, the touch-sensitive screen sends input undervoltage detected signal for logic control board, logic control board gives the main control board turn-on signal through the contactor is automatic, and set up the frequency conversion power supply output main control board input sampling normal voltage value automatically through the communication, progressively decrease through the communication, make the sampling voltage value of frequency conversion power supply output main control board input voltage able to programme reach the undervalue, logic control board detects whether the main control board sends the shut-down signal simultaneously, the value of the frequency conversion power supply able to programme when the record shut down, and report and save the result.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (5)

1. A single-phase inverter detection system is characterized by comprising three components, namely a complete machine test bed A, a drive plate test bed B and a main control board test bed C, wherein a box body is arranged in the complete machine test bed A, the drive plate test bed B and the main control board test bed C, the box body is a test cabinet, pipes and plates of the box body are made of stainless steel, seamless welding is adopted for welding a box body frame and modules, a complete machine test module A is arranged in the complete machine test bed A, a drive plate test module B is arranged in the drive plate test bed B, a main control board test module C is arranged in the main control board test bed C, the complete machine test module A comprises a touch screen A, an industrial control host, a logic control board, a direct current 110V switching power supply, a 6KW programmable direct current power supply, an alternating current load, the drive plate test bed B comprises a 15-inch high-definition touch screen, the test device comprises a test substrate, a DC110V switch power supply, a drive board test bed B automatically tests related detection items through one touch screen, and a main control board test bed C comprises a main control board test bed C touch screen, an industrial control host, a logic control board, a DC110V switch power supply, a 500VA programmable variable frequency power supply, a programmable direct current power supply and a test substrate.
2. The single-phase inverter detection system according to claim 1, wherein the work flow of the complete machine inspection module of the complete machine test stand a is as follows:
the first step is as follows: the whole machine test bed A is internally provided with a programmable direct current power supply device, the programmable direct current power supply is input by using a digital or encoder, the input power supply is a direct current power supply of which the voltage and the current are regulated by a non-potentiometer, the power of the programmable direct current power supply device is selected to be 6KW, and the programmable direct current power supply device provides a required input power supply for a single-phase inverter;
the second step is that: a logic control board is arranged in the complete machine test bed A, a starting signal device is arranged on the logic control board, a single-phase inverter is started through a starting signal, the single-phase inverter can give a running switching value signal, and the switching value signal is set to be a logic value;
the third step: when the switching value signal of the complete machine test bed A is in a logic value on state, the single-phase inverter increases the load to full load, adopts a mode of stepwise adjustable 100W 11, 200W 11 and 300W 3 and adopts 3 stages, and the power of each stage is respectively as follows: the power of the stage 1 is 100W 11, the power of the stage 2 is 200W 11, the power of the stage 3 is 300W 3, the rated power is 4200W, whether all parameters are normal or not is checked, the normal output voltage is AC220V, the normal fluctuation range of the output voltage is +/-6% to-3%, and the harmonic content is less than 5%;
the fourth step: the method comprises the steps of testing the input overvoltage of a single-phase inverter of a complete machine test bed A, firstly, a touch screen of the complete machine test bed A is passed, a power supply of the touch screen is from a DC110V switch power supply, a 110VDC power supply and a starting signal are input to the single-phase inverter, the starting signal is communicated to a logic control board through the touch screen, the logic control board sends the starting signal, then the single-phase inverter overvoltage test is selected, the touch screen sends the single-phase inverter overvoltage test to the logic control board, the logic control board automatically starts to set the output voltage value of a DC programmable power supply to be gradually increased to an overvoltage value through communication, the overvoltage value is 140V, the logic control board simultaneously and automatically detects the operation switching value fed back by the single-phase inverter, whether the single-phase;
the fifth step: the input undervoltage of a single-phase inverter of a test bed A of the whole machine is tested, firstly, a touch screen is used for supplying power from a DC110V switch power supply, a 110VDC power supply and a starting signal are supplied to the single-phase inverter, the starting signal is communicated to a logic control board through the touch screen, the logic control board sends the starting signal, the single-phase inverter undervoltage test is selected, the touch screen sends the single-phase inverter undervoltage test to the logic control board, the logic control board automatically starts to set the output voltage value of a DC programmable power supply through communication, the voltage value is decreased to the undervoltage value, the undervoltage value is set to be 75V, the logic control board simultaneously and automatically detects the operation switching value fed back by the single-phase inverter to judge whether the single-phase inverter is;
and a sixth step: the method comprises the steps of testing the overcurrent value output by a single-phase inverter of a complete machine test stand A, enabling the touch screen power supply to be from a DC110V switch power supply through a touch screen of the complete machine test stand A, providing 110VDC voltage and a starting signal to the single-phase inverter, enabling the starting signal to be communicated to a logic control board through the touch screen, enabling the logic control board to send a starting signal, selecting the single-phase inverter to output the overcurrent test, enabling the touch screen to send the single-phase inverter to output the overcurrent test to the logic control board, enabling the logic control board to automatically start to set a direct-current programmable power supply through communication, enabling the output voltage value of the direct-current programmable power supply to be DC110V, automatically and continuously increasing a load by the logic control board through a control contactor after an operation switching value signal fed back by the single-phase inverter is detected after the single-phase inverter is normally, detecting whether the operation switching value signal is stopped, recording the size of the load when the operation switching value signal is stopped, and reporting and storing the result;
the seventh step: firstly, a touch screen of the complete machine test bed A gives 110VDC control power and a starting signal to the single-phase inverter, the starting signal is communicated to a logic control board through the touch screen, the logic control board sends the starting signal to select the single-phase inverter to output overload test, the touch screen sends the single-phase inverter to output overload test to the logic control board, the logic control board sets the output voltage value of a direct current programmable power supply through communication, the output voltage value of the direct current programmable power supply is initially DC110V, after the single-phase inverter is normally started, detecting an operation switching value signal fed back by the single-phase inverter, automatically and continuously increasing a load to an overcurrent value by the logic control board through controlling the contactor, selecting 1.2In as the overcurrent value, simultaneously and automatically detecting whether the operation switching value signal fed back by the single-phase inverter is stopped or not by the control logic board, recording the size of the load when the single-phase inverter is stopped, and reporting and storing a result;
eighth step: the method comprises the steps of testing the output short circuit of a single-phase inverter of a complete machine test stand A, firstly, providing 110VDC control power and an opening signal to the single-phase inverter through a touch screen of the complete machine test stand A, communicating the opening signal to a logic control panel through the touch screen, sending the opening signal by the logic control panel, then selecting the single-phase inverter to output a short circuit test, sending the single-phase inverter to the logic control panel through the touch screen to output a short circuit test, starting the logic control panel to set the output voltage value of a direct-current programmable power supply through communication, wherein the output voltage value of the direct-current programmable power supply is DC110V initially, detecting an operation switching value signal fed back by the single-phase inverter after the single-phase inverter is normally started, then automatically setting a normal loading value by the logic control panel through a control contactor, the power of the normal loading value is 3., detecting whether the operation signal is stopped, and reporting and storing the result;
the ninth step: the full-load efficiency of a single-phase inverter of a test bed A of the whole machine is tested, firstly, a touch screen is used for providing 110VDC control power and a starting signal for the single-phase inverter, a full-load efficiency test of the single-phase inverter is selected, the touch screen sends out the full-load efficiency test of the single-phase inverter to a logic control board, the logic control board starts to set the output voltage value of a direct-current programmable power supply for communication, the output voltage value of the direct-current programmable power supply is initially DC110V, after the single-phase inverter is normally started, an operation switching value signal fed back by the single-phase inverter is detected, the logic control board automatically sets full-load capacity through a control contactor, after the starting is completed, the logic control board automatically detects input voltage;
the tenth step: the whole machine test bed A and the whole machine test bed module can automatically test related test items through one key of the touch screen, and can store and download test results of the related test items for summarization.
3. The single-phase inverter detection system of claim 1, wherein the drive board test stand B operates as follows:
the first step is as follows: comprehensively detecting, namely fixing a test substrate of a drive board test bed B in a platform, adopting a thimble type test substrate as the test substrate, checking whether each test point is normal through a touch screen, and selecting a test item through the touch screen after the test point is normal;
the second step is that: setting a normal standard numerical value of a drive wave of a drive plate inspection module B, setting a voltage value B-1 of a drive waveform as 15V, and setting a dead zone numerical value as 5 us;
the third step: the method comprises the following steps that a drive plate is output, firstly, drive waveform detection is selected through a touch screen of a drive plate test bed B, the touch screen sends drive waveform detection signals to a logic control board, the logic control board automatically starts to send drive waves to the drive plate, the logic control board automatically detects the voltage value and the dead zone value of the drive waveform sent by the drive plate, the voltage value of the drive waveform is compared with a standard value, the dead zone value is compared with the standard value, the comparison result is compared, and the result is reported and stored;
the fourth step: the drive plate of the drive plate test bed B drives the fault feedback, firstly, the drive fault feedback detection is selected through a touch screen, the touch screen sends a drive waveform detection signal to a logic control board, the logic control board automatically starts to send a drive wave to the drive plate, the logic control board automatically detects the voltage value of the drive waveform sent by the drive plate, the voltage value range of the drive waveform is +/-15V, whether the dead zone is correct or not is judged, and the dead zone is 5 us;
the fifth step: the logic control board of the drive board test bed B simulates drive board fault signals of all points, and the logic control board automatically detects whether the drive board stops outputting waves and feeds back the waves at the same time, reports and stores results;
and a sixth step: and each power supply point of the drive board test bed B automatically detects whether each power supply point of the drive board is normal or not through the drive board power supply detection option of the touch screen of the drive board test bed B by the logic control board, and reports and stores the result.
4. The single-phase inverter detection system of claim 1, wherein the main control board inspection station C touch screen selects a 15-inch high-definition touch screen.
5. The single-phase inverter detection system of claim 1, wherein the work flow of the main control board inspection module of the main control board inspection station C is as follows:
the first step is as follows: the main control board inspection bench C is characterized in that a main control board is fixed on a test substrate;
secondly, the main control board inspection bench C performs comprehensive detection, the main control board is electrified through the touch screen, whether each test point is normal or not is detected through the touch screen, and after the test point is normal, a test item is selected through the touch screen;
the third step: testing each power supply point of the main control board inspection bench C, selecting the power supply of the main control board for detection through a touch screen, automatically detecting whether each power supply point of the main control board is normal by a logic control board, and reporting and storing results;
the fourth step: the main control board inspection bench C is used for detecting the driving waveform, the driving waveform is selected to detect through the main control board inspection bench C touch screen, the touch screen sends a driving waveform detection signal to the logic control board, the logic control board automatically gives a starting signal to the main control board through a contactor, the logic control board automatically sets a programmable direct current power supply through communication, inputs a sampling normal voltage value to the main control board, the logic control board automatically detects the voltage value of the driving waveform sent by the main control board, the voltage value of the driving waveform is +/-15V, the dead time is 5us, whether the detection setting is correct or not is detected, and the result is reported and stored;
the fifth step: the method comprises the following steps that temperature feedback simulation of a main control board inspection table C is carried out, temperature feedback detection is selected through a touch screen of the main control board inspection table C, the touch screen sends a temperature feedback detection signal to a logic control board, the logic control board automatically gives a starting signal to the main control board through a contactor, the logic control board sets a main control board temperature sampling value through the contactor, the main control board temperature sampling value reaches over-temperature, the over-temperature is set to be +85 ℃, whether the logic control automatic detection main control board sends an over-temperature signal or not is checked, and a result is;
and a sixth step: the main control board of the main control board inspection bench C outputs overvoltage feedback, overvoltage detection is selectively output through a touch screen of the main control board inspection bench C, the touch screen sends an output overvoltage detection signal to the logic control board, the logic control board automatically gives an opening signal to the main control board inspection bench C through a contactor, the logic control board automatically sets a programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a sampling normal voltage value to the main control board, the logic control board automatically increases progressively through communication, the programmable variable frequency power supply outputs a sampling voltage value of the main control board input voltage, when the sampling voltage value reaches an excessive value, the logic control board automatically detects whether the main control board sends a shutdown signal, reports and saves the result;
the seventh step: the main control board of the main control board inspection bench C outputs undervoltage feedback, the output undervoltage detection is selected through the main control board inspection bench C touch screen, the main control board inspection bench C touch screen sends an output undervoltage detection signal to the logic control board, the logic control board automatically gives a start signal to the main control board through a contactor, the logic control board automatically sets a programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a sampling normal voltage value to the main control board, the logic control board enables the sampling voltage value to be gradually reduced, when the sampling voltage value of the programmable variable frequency power supply output main control board input voltage reaches an undervalue, the logic control board automatically detects whether the main control board sends a shutdown signal or not, and reports and saves the;
eighth step: the method comprises the steps that a main control board inspection bench C detects the output switching value, the main control board inspection bench C touch screen selects the output switching value to detect, the main control board inspection bench C touch screen sends an output switching value detection signal to a logic control board, the logic control board automatically gives a main control board starting signal through a contactor, the logic control board automatically sets to enable a programmable variable frequency power supply to output a main control board input sampling normal voltage value, the logic board detects whether the main control board operates normally in switching value detection, the logic control board automatically sets a main control board temperature sampling value to enable the main control board temperature sampling value to reach an over-temperature state, the logic control board detects whether the main control board sends an over-temperature signal, and reports and saves results;
the ninth step: the main control board of the main control board inspection desk C outputs overcurrent detection, the output overcurrent detection is selected through the touch screen, the touch screen sends an output overcurrent detection signal to the logic control board, the logic control board automatically gives a starting signal to the main control board through a contactor, the logic control board automatically sets a programmable variable frequency power supply through communication, the programmable variable frequency power supply outputs a normal voltage value, the normal voltage value is DC110V, the logic control board realizes automatic increment of the programmable direct current power supply through communication, the programmable direct current power supply outputs a current sampling overcurrent value of the main control board, the current sampling overcurrent value is selected to be 19A, the logic control board detects whether the control board is stopped or not, and reports and saves results;
the tenth step: the main control board inspection bench C is used for outputting overload detection, the touch screen of the main control board inspection bench C is used for selectively outputting the overload detection, the touch screen sends an output overload detection signal to the logic control board, the logic control board automatically gives a starting signal to the main control board through a contactor, the logic control board automatically sets a programmable variable frequency power supply output value through communication, the normal voltage value of the programmable variable frequency power supply output value is DC110V, the logic control board automatically increases the value of a programmable direct current power supply through communication, the programmable direct current power supply outputs an output current sampling overload value of the main control board, the logic control board detects whether the main control board is stopped or not, and reports and saves the result;
the eleventh step: the main control board of the main control board inspection bench C inputs overvoltage detection, the main control board inspection bench C inputs overvoltage detection by selecting the main control board inspection bench C through a main control board inspection bench C touch screen, the touch screen sends an input overvoltage detection signal to the logic control board, the main control board inspection bench C logic control board automatically gives a starting signal to the main control board through a contactor, and automatically sets a programmable variable frequency power supply to output a main control board input sampling normal voltage value through communication, the programmable variable frequency power supply outputs the main control board input voltage sampling voltage value to reach an excessive value through automatic incremental increase through communication, and simultaneously the logic control board detects whether the main control board sends a shutdown signal, records the value of the programmable variable frequency power supply during shutdown, and reports and saves results;
the twelfth step: the main control board inspection bench C main control board input undervoltage detection is carried out, the main control board inspection bench C touch screen is used for selecting input undervoltage detection, the touch screen sends an input undervoltage detection signal to the logic control board, the logic control board automatically gives a main control board starting signal through a contactor, the programmable variable frequency power supply output main control board input sampling normal voltage value is automatically set through communication, the sampling voltage value of the programmable variable frequency power supply output main control board input voltage reaches an undervalue through communication, meanwhile, the logic control board detects whether the main control board sends a stop signal or not, the value of the programmable variable frequency power supply during stop is recorded, and the result is reported and stored.
CN202011352883.4A 2020-11-26 2020-11-26 Single-phase inverter detection system Pending CN112526264A (en)

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