CN119575015A - A frequency converter testing method, system, device and medium - Google Patents

Abstract

The present application discloses a method, system, device and storage medium for testing a frequency converter, wherein the method comprises the following steps: in response to a first operation input by a user, outputting a first phase voltage to make the frequency converter to be tested run with load, and detecting the real-time electrical parameters of the frequency converter to be tested when running with load; wherein the first operation comprises a voltage phase type determination operation, a voltage level determination operation and a power level determination operation; the voltage level determination operation and the power level determination operation are used to determine the upper limit value of the parameter of the frequency converter electrical parameter, and the voltage level determination operation and the power level determination operation are used to determine the lower limit value of the parameter of the frequency converter electrical parameter; the voltage phase type determination operation is used to determine the phase of the first phase voltage; when the real-time electrical parameter is greater than or equal to the lower limit value of the parameter and less than or equal to the upper limit value of the parameter within a first preset time length, the frequency converter to be tested is determined to be a qualified frequency converter. The present application can be widely applied to the field of frequency converter testing technology.

Description

Frequency converter testing method, system, device and medium

Technical Field

The application relates to the technical field of frequency converter testing, in particular to a frequency converter testing method, a frequency converter testing system, a frequency converter testing device and a frequency converter testing storage medium.

Background

In the related art, most of the conventional frequency converter function test processes need to be manually performed for the related test of the running motor. This can lead to the frequency converter being exposed to the outside, which is prone to accidental electric shock hazards. And the manual operation process is complicated, the data in the test process cannot be monitored in real time, and the detection result also needs to be manually and actively judged, so that the test efficiency is low. Accordingly, there still exists a technical problem in the related art that needs to be solved.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art to a certain extent.

Therefore, an objective of the embodiments of the present application is to provide a method, a system, a device and a storage medium for testing a frequency converter, which can improve testing efficiency and testing security.

In order to achieve the technical purpose, the technical scheme adopted by the embodiment of the application comprises a frequency converter testing method, wherein the frequency converter testing method comprises the steps of responding to first operation input by a user, outputting first phase voltage to enable a frequency converter to be tested to operate, detecting real-time electric parameters of the frequency converter to be tested when the frequency converter to be tested operates, wherein the first operation comprises voltage phase type determining operation, voltage grade determining operation and power grade determining operation, the voltage grade determining operation and the power grade determining operation are used for determining the upper parameter limit value of the frequency converter electric parameters, the voltage grade determining operation and the power grade determining operation are used for determining the lower parameter limit value of the frequency converter electric parameters, the voltage phase type determining operation is used for determining the phase position of the first phase voltage, and the frequency converter to be tested is determined to be a qualified frequency converter when the real-time electric parameters are larger than or equal to the lower parameter limit value and smaller than or equal to the upper parameter limit value in first preset duration.

In addition, according to the method for testing a frequency converter of the above embodiment of the present invention, the following additional technical features may be provided:

Further, in the embodiment of the application, the first phase voltage is output in response to a first operation input by a user, and the method specifically comprises the steps of responding to a voltage phase type determining operation input by the user, analyzing the voltage phase type determining operation to obtain a voltage phase corresponding to the voltage phase type determining operation, taking the voltage phase as the phase of the first phase voltage, responding to a voltage grade determining operation and the power grade determining operation input by the user, analyzing the voltage grade determining operation and the power grade determining operation to obtain voltage values corresponding to the voltage grade determining operation and the power grade determining operation, and taking the voltage values as the voltage values of the first phase voltage.

Further, in the embodiment of the application, the method further comprises the step of determining that the frequency converter to be tested is a fault frequency converter when the real-time electric parameter is smaller than the lower limit value of the parameter or larger than the upper limit value of the parameter within a first preset duration.

Further, in an embodiment of the present application, the method further includes:

the parameter upper limit value includes a voltage upper limit value, the parameter lower limit value includes a voltage lower limit value, the method further includes:

when the phase of the first phase voltage is different from the phase corresponding to the voltage phase type determining operation, stopping the operation of the frequency converter and stopping the test;

and stopping the operation of the frequency converter and stopping the test when the voltage value of the first phase voltage is larger than the upper voltage limit value or smaller than the first lower voltage limit value.

Further, in an embodiment of the present application, the first operation further includes blocking an operation of the photoelectric switch.

Further, in an embodiment of the present application, the method further includes displaying the real-time electrical parameter and saving the real-time electrical parameter to a memory.

Further, in an embodiment of the present application, the voltage phase type includes single-phase alternating current and three-phase alternating current.

On the other hand, the embodiment of the application also provides a frequency converter testing system, which comprises:

The first processing unit is used for responding to a first operation input by a user, outputting a first phase voltage to enable the to-be-tested frequency converter to operate in a belt mode, and detecting real-time electric parameters of the to-be-tested frequency converter when the belt operates;

the first operation comprises a voltage phase type determining operation, a voltage grade determining operation and a power grade determining operation, wherein the voltage grade determining operation and the power grade determining operation are used for determining the upper parameter limit value of the electric parameter of the frequency converter, and the voltage grade determining operation and the power grade determining operation are used for determining the lower parameter limit value of the electric parameter of the frequency converter;

and the second processing unit is used for determining that the frequency converter to be tested is a qualified frequency converter when the real-time electric parameter is larger than or equal to the lower limit value of the parameter and smaller than or equal to the upper limit value of the parameter within a first preset time period.

In another aspect, the present application further provides a testing device for a frequency converter, including:

At least one processor;

at least one memory for storing at least one program;

the at least one program, when executed by the at least one processor, causes the at least one processor to implement the method of testing a frequency converter as described in any of the summary.

Furthermore, the present application provides a computer readable storage medium having stored therein processor executable operations for performing the method of testing a frequency converter as described in any of the above, when executed by a processor.

The advantages and benefits of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

The method and the device can respond to first operation input by a user, output first phase voltage to enable the frequency converter to be tested to operate and detect real-time electric parameters of the frequency converter to be tested, wherein the first operation comprises voltage phase type determining operation, voltage grade determining operation and power grade determining operation, the voltage grade determining operation and the power grade determining operation are used for determining parameter upper limit values of the electric parameters of the frequency converter, the voltage grade determining operation and the power grade determining operation are used for determining parameter lower limit values of the electric parameters of the frequency converter, the voltage phase type determining operation is used for determining the phase of the first phase voltage, and when the real-time electric parameters are larger than or equal to the parameter lower limit values and smaller than or equal to the parameter upper limit values in a first preset duration, the frequency converter to be tested is determined to be a qualified frequency converter. The application adopts an automatic test method, can improve the safety problem of the test process of the frequency converter and improve the test efficiency.

Drawings

FIG. 1 is a schematic diagram illustrating steps of a method for testing a frequency converter according to an embodiment of the invention;

FIG. 2 is a block diagram of an overall architecture required for implementing a test method in an embodiment of the present invention;

FIG. 3 is a block diagram of a hardware structure of a test bench cabinet according to a test method in an embodiment of the invention;

FIG. 4 is a block diagram of the hardware circuitry required for the test method according to one embodiment of the present invention;

FIG. 5 is a flow chart of a testing process for testing a user according to an embodiment of the invention;

FIG. 6 is a diagram illustrating an interface of a host computer during a user test in accordance with an embodiment of the present invention;

FIG. 7 is a schematic diagram of a testing procedure performed by a user according to another embodiment of the present invention;

FIG. 8 is a schematic diagram illustrating a testing system for a frequency converter according to an embodiment of the present invention;

Fig. 9 is a schematic structural diagram of a testing device for a frequency converter according to an embodiment of the invention.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings, to illustrate the principles and processes of the method, system, device, and storage medium for testing a frequency converter in the embodiments of the present invention.

Referring to fig. 1, the present application provides a method for testing a frequency converter. The method may comprise steps S101-S102.

S101, responding to a first operation input by a user, outputting a first phase voltage to enable a frequency converter to be tested to operate, and detecting real-time electric parameters of the frequency converter to be tested;

The first operation comprises a voltage phase type determining operation, a voltage class determining operation and a power class determining operation, wherein the voltage class determining operation and the power class determining operation are used for determining the upper voltage limit value of the electric parameter of the frequency converter. Specifically, after the user performs the voltage level determining operation and the power level determining operation, the processor may analyze the above operations to obtain a parameter upper limit value of the electrical parameter of the frequency converter. The voltage class determination operation and the power class determination operation are used for determining a parameter lower limit value of the frequency converter electrical parameter. Specifically, after the user performs the voltage level determining operation and the power level determining operation, the processor may analyze the above operations to obtain a parameter lower limit value of the electrical parameter of the frequency converter. After the user performs the voltage phase type determination operation, the processor may parse the operation and determine the phase of the first phase voltage.

The first phase voltage can enable the frequency converter to be tested to operate in a load mode. The real-time electrical parameter may include one of a current, a voltage, or a real-time operating frequency of the frequency converter to be measured or other electrical parameters of a loop in which the frequency converter to be measured is located when the frequency converter to be measured is in operation.

S102, when the real-time electric parameter is larger than or equal to the lower parameter limit value and smaller than or equal to the upper parameter limit value within the first preset time period, determining that the frequency converter to be tested is a qualified frequency converter.

It will be appreciated that the first phase voltage is the voltage output by the processing device. The frequency converter electrical parameter is a reference voltage obtained through an algorithm built in the processing device in response to a first operation input by a user. The reference voltage may have an upper limit value and a lower limit value. The first preset duration may be a user-defined time period. The real-time electrical parameter is the real-time voltage of the frequency converter as it operates.

Further, in some possible embodiments of the present application, the step of outputting the first phase voltage in response to the first operation input by the user specifically includes steps S201 to S202.

S201, responding to voltage phase type determining operation input by a user, analyzing the voltage phase type determining operation to obtain a voltage phase corresponding to the voltage phase type determining operation, and taking the voltage phase as the phase of the first phase voltage.

S202, responding to voltage class determining operation and power class determining operation input by a user, analyzing the voltage class determining operation and the power class determining operation to obtain voltage values corresponding to the voltage class determining operation and the power class determining operation, and taking the voltage values as voltage values of the first phase voltage.

Further, in some possible embodiments of the present application, the method further includes determining that the frequency converter to be tested is a faulty frequency converter when the real-time electrical parameter is less than the lower parameter limit or greater than the upper parameter limit for a first predetermined period of time.

Further, in some possible embodiments of the present application, the parameter upper limit value may include a voltage upper limit value, the parameter lower limit value may include a voltage lower limit value, and the method further includes:

and stopping the operation of the frequency converter and stopping the test when the phase of the first phase voltage is different from the phase corresponding to the voltage phase type determining operation.

And when the voltage value of the first phase voltage is larger than the upper voltage limit value or smaller than the first lower voltage limit value, stopping the operation of the frequency converter and stopping the test.

Further, in some possible embodiments of the application, the first operation further comprises blocking the electro-optical switch operation.

Further, in some possible embodiments of the present application, the transducer testing method further comprises displaying the real-time electrical parameter and saving the real-time electrical parameter to the memory.

Further, in some possible embodiments of the application, the voltage phase type includes single-phase alternating current as well as three-phase alternating current.

The following describes the specific implementation principle of the application with reference to the drawings:

The test method of the present embodiment may be implemented by a test bench. The test bench can be divided into a cabinet body structure part, a hardware circuit part and a software implementation part. Referring to fig. 2, the overall architecture required to implement the test method includes:

1. The intelligent ammeter is connected to the front end circuit of the frequency converter at the load side, the conditions of input voltage, current and the like of the frequency converter at the load side are obtained, the upper computer is connected with the intelligent ammeter through a communication line, and the output parameters of the frequency converter at the load side are obtained in a communication mode and displayed on the interface of the upper computer as input parameters.

2. The code scanning gun is connected with the upper computer through the USB port and is used for scanning codes of the frequency converter to be tested and delivered to obtain corresponding work numbers, so that data can be conveniently recorded on the upper computer.

3. The main control board 1 is a main control board at the tested side and comprises a related program for controlling the frequency converter, and is responsible for receiving signals of the upper computer and performing output control on the frequency converter, so that the control on the motor at the tested side is achieved, and the motor running condition of the elevator in actual running is simulated for testing.

4. The main control board 2 is a main control board at the load side and comprises a related program for controlling the frequency converter and an output signal for controlling the frequency converter at the tested side to be connected with the motor. And the input and output signals of the button switches of the corresponding test bench are controlled and detected, and the corresponding states are fed back to the upper computer. The motor on the load side is used to simulate the situation of people or things being carried in an actual elevator operation during testing. The load side frequency converter is also provided with an energy feedback unit for receiving energy generated by the operation of the redundant motor, so that the effect of saving energy is achieved.

5. And the frequency converter is an electric power control device which actually provides output for the motor.

6. And a motor, which is a machine for driving the elevator to operate in the actual elevator operation process.

Test bench cabinet hardware architecture referring to fig. 3, in fig. 3, a test bench cabinet hardware architecture includes:

1. And the emergency stop switch is connected with the load side power supply circuit, and when the switch acts, the load side is powered off to enable the output signal controlled by the corresponding load side to fail, so that the power supply output of the test is disconnected, and the effect that the frequency converters on two sides are powered off is achieved.

2. And D, obtaining the bus voltage of the frequency converter by the left/right DC ammeter.

3. And when the test is needed, the protection cover is moved to the test side to block the photoelectric switch. After the photoelectric switch is effective, the power supply of the subsequent test side frequency converter and the motor can be given. The photoelectric switch inputs signals of X1 and X2 to the main board, and when the protective cover is removed, the main board is subjected to power-off treatment, so that the protective effect is achieved.

4. And when the frequency converter with single/three phases of different voltage levels at the corresponding side is to be tested, the knob is required to be driven to one side of the corresponding voltage level, and the air switch with the corresponding voltage level is closed, so that the frequency converter can be powered by pressing a start button at the prediction side. The position condition of the knob is input to the X3, X4, X5 and X6 ports of the load side main board through IO signals, and the load side main board is used for judging whether the voltage class selected by a user at the interface and the knob position are correct or not. When the knob is not in the right position or the corresponding air switch is not closed, the power cannot be normally supplied to the frequency converter for testing, and the safety of the condition that the selected voltage level is not matched with the voltage level of the frequency converter is increased.

5. Left/right start confirm button, left/right side converter output to motor connect contactor:

when the position of the protective cover is normal and the air switch and the voltage level knob are correct, the start confirmation button on the left/right side is pressed, signals are input to the main board on the load side through the input of X7 and X8, and the main board on the load side tells the upper computer that the test on the corresponding side starts. After the upper computer checks that all the parts on the preliminary test side are normal, an output signal is output to the motor connection contactor Y5 or Y6 from the left/right side frequency converter, so that the test frequency converter is matched with the motor to start the test.

6. And the load side end is connected with the intelligent ammeter and the scram switch. The emergency stop switch is positioned at the front end of the load side circuit, and when the emergency stop switch acts, the power supply of the load side is cut off. Because the output of the tested side is controlled by the IO output of the load side, when the power of the load side is cut off, the tested side can cut off the power supply of the frequency converter, so that the effect of cutting off the power supply on two sides after the scram switch is turned down is achieved. The connection part of the load side frequency converter and the motor is controlled by the Y7 of the load side main control board, and after the test starts, the upper computer controls the main control board Y7 to output so as to enable the load side motor to rotate, thereby simulating the situation of elevator load test.

The hardware circuit part may refer to fig. 4, and in fig. 4, the hardware circuit may include:

(1) And in the loop 1, when the left photoelectric switch signal is effective, P24 is conducted to the X1 input from the main board to the main board, and the load side main control board judges whether the left photoelectric switch has input or not by reading the X1 signal.

(2) The loop 2P 24 correspondingly inputs signals to the main board according to the position where the single/three-phase knob is driven, when the left-side knob is driven to be single-phase, the load side main control board X3 has signal input, and when the left-side knob is driven to be three-phase, the left-side knob has signal input for X4. And the load side main control board judges whether the switch knob is misplaced or not according to the position of the switch knob and the voltage level selected by the upper computer option interface, and prompts a tester if the switch knob is misplaced. And simultaneously, when the test starting condition is met, the single/three-phase frequency converter is supplied with power based on the position of the switch knob.

(3) And the loop 3 is that when the left photoelectric switch acts, the P24 can be conducted to enter the loop, and when the left photoelectric switch is invalid, the ③ loop is free of the P24 and can not be conducted, so that the power supply output of a subsequent frequency converter is invalid, and the frequency converter is powered down, thereby playing a role in protection.

When the left photoelectric switch is effective, the left start button is pressed, the scram switch is not pressed, and when the single/three-phase power supply relay of the right frequency converter does not act, the load side main control board outputs output signals Y1/Y2 of the corresponding voltage level on the left side, and the loop is conducted. At the moment, the single/three-phase power supply relay switch at the same position with the left switch button is closed to form a loop due to the action of the single/three-phase power supply relay, so that the self-conduction action is realized. When the left photoelectric switch is invalid, the scram switch button is pressed, the right frequency converter single/three-phase power supply relay acts, or the load side main board control Y1/Y2 is disconnected, the loop is disconnected, and the power supply of the left frequency converter is disconnected.

(4) And 4, when the right frequency converter outputs a Y5 signal to the motor relay and does not act, the circuit is conducted, so that the left frequency converter outputs a Y5 signal to the motor to be tested to control the motor to rotate. When the Y5 signal is not output or the right frequency converter is output to the motor relay to act, the loop is cut off.

(5) Loop 5P 24 is turned on to the load side main control board input of X7 when the left start button is pressed.

Referring to FIG. 5, the user tests the frequency converter in the same batch, and rotates the left and right knobs to the correct positions according to the power supply voltage level of the frequency converter, and selects the corresponding power level on the interface of the upper computer according to the power. And then testing on the left or right side. Because the frequency converter is powered down and the line is disassembled and assembled in a time required, the other side of the frequency converter can be connected with the wiring of the frequency converter in the automatic test process. After one side test is completed, the protective cover is slid to the other side for retesting, and the other side is disconnected and reconnected with a new frequency converter after the frequency converter is powered down. Thereby achieving the effect of saving time. P24 may be a voltage input port.

Referring to fig. 6, the upper computer interface of the present embodiment includes:

1. the upper computer is divided into three interfaces. Interface 1, interface 2 and interface 3, respectively.

Interface 1 is a voltage and power selection interface. The power class and voltage of the batch converter to be tested is selected at this interface. And the upper computer invokes the parameters needing to be issued and written from the local storage according to the selected parameters. And entering a test interface after the corresponding voltage level and the corresponding power level of the frequency converter are selected for confirmation. And when the test is not performed, the test interface can be returned.

The interface 2 is a test interface, and mainly displays input parameters such as input voltage, input current, input power and the like read from the intelligent ammeter, and output parameters of the tested frequency converter, which are related to the voltage, current, frequency, motor running speed, bus voltage and power module temperature, obtained from a main control board equipped with the tested frequency converter. And simultaneously, the work number of the tested frequency converter, the current testing condition and the like, the local storage of the testing result, the return voltage power level selection interface and the button for entering the debugging interface are displayed.

The interface 3 is a debugging interface, can be accessed through the testing interface when the test is not performed, and can be used for modifying the control parameters of the main control board of the load side frequency converter, the control parameters of the main control board of the tested side frequency converter and the running test duration of the electric motor. Typically including motor parameters on the measured side and the load side, so that the frequency converter is adapted to the desired belt-driven motor. The test interface may be returned via a back button.

Referring to fig. 7, the test flow of the present implementation includes steps ① - ⑦.

① And under the selection interface, selecting the corresponding power grade and voltage grade, and selecting parameters of the main control board of the frequency converter and information of the input signal to be read, which are required to be issued, by the upper computer according to the grade.

② After confirmation, the upper computer enters a test interface, continuously reads the input signal of the main control board at the load side by inquiring, simultaneously judges whether the input knob signal is correct according to the voltage level selected by ①, simultaneously judges whether the photoelectric switch at the corresponding side is shielded, inputs the work number, and starts the test by pressing the start button at the corresponding side.

If ① is selected as the three-phase power supply voltage level, when the left photoelectric switch on the shielding side of the protective cover is detected to be effective, the left rotary switch is detected to be the position which is shifted to the three-phase power supply, the work number of the frequency converter is read through the code scanning gun, and at the moment, the test is started when the start button on the left is detected to be pressed. If the left start button of the single-phase power supply is pressed or the right start button of the three-phase power supply is pressed at the moment, the test is not started.

③ After the test is started, the upper computer controls the output of the load side main control board and controls the power-on of the tested side frequency converter. And simultaneously, corresponding parameters are issued to the main control boards at the tested side and the load side. And simultaneously, the main control board on the tested side is read to obtain the power supply voltage of the frequency converter, and if the read power supply voltage does not coincide with the selected voltage and the knob switch, the power supply is disconnected and the power supply voltage is prompted to be wrong.

④ When the above settings and operations are ensured to be correct, testing is started. The upper computer controls the load side main control board to control the relay attraction of the load side and the tested frequency converter output to the motor, so that the frequency converters at two sides are output to the motor to implement the test.

⑤ In the test process, the variable frequency parameters and fault conditions of the load side and the input signals of the load side are read in real time. If the load side fails, or the input signal at the load side detects that the photoelectric switch signal blocked by the protective cover disappears (the hardware circuit can also power off the photoelectric switch signal), the voltage level knob is changed (the hardware circuit can also power off the photoelectric switch signal), the load side main control board is controlled to disconnect the corresponding output signal, so that the power is off, and meanwhile, the failure reason is displayed on the screen. And reading the data of the intelligent ammeter in real time and displaying the data on a screen for reference of testers.

And the variable frequency parameters and fault conditions of the tested side are read in real time, and the variable frequency parameters are displayed on an upper computer for reference of testers. If the tested side fails, the upper computer controls the load side main control board to disconnect the output from the tested side frequency converter to the motor, and the tested frequency converter outputs a power supply signal to stop testing, and the failure reason is displayed on the screen. In the test process, the upper computer comprises a stop button, when the button is pressed, the upper computer sends an instruction to control the main control boards on the tested side and the load side to stop the operation of the motor, and the output relays from the frequency converters on the load side and the tested side to the motor are disconnected, and the upper computer returns to the state of starting the test and waits for the switch button to be pressed again.

⑥ No problem exists in the test process, and the corresponding test duration is passed. The test is passed on the screen, and the local work number and test condition are reserved to the local storage. The upper computer controls the disconnection of the output port of the load side, so that the output from the load side frequency converter to the motor is disconnected, all the outputs of the tested side are disconnected, and the tested side frequency converter is powered down. The upper computer program returns to stage ② again to continuously query the input signal of the load side main control board to determine whether to start the test. At this time, if the frequency converter on the other side is already connected with the wire, the test can be started. The frequency converter on the original test side can be dismantled and the new frequency converter is rewired after the power failure of the frequency converter on the other side is completed in the test process, so that the time is saved.

⑦ Under the test interface, the parameters of the frequency converter which are written into the load side and the tested side in the issuing mode can be modified by entering the debugging interface through a debugging interface button, and the parameters generally comprise motor parameters, test duration and the like which are required to be controlled by the frequency converter. Therefore, parameters are set under the interface by the frequency converter test board, and the frequency converter test board can be tested corresponding to different motors.

In addition, referring to fig. 8, corresponding to the method of fig. 1, a frequency converter testing system is further provided in an embodiment of the present application. The system may include a first processing unit 1001 and a second processing unit 1002. The first processing unit 1001 may be configured to output a first phase voltage to operate the frequency converter to be tested in response to a first operation input by a user, and detect a real-time electrical parameter of the frequency converter to be tested. Wherein the first operation includes a voltage phase type determination operation, a voltage class determination operation, and a power class determination operation. The voltage class determination operation and the power class determination operation are used for determining a parameter upper limit value of the frequency converter electrical parameter, and the voltage class determination operation and the power class determination operation are used for determining a parameter lower limit value of the frequency converter electrical parameter. The voltage phase type determination operation is used to determine the phase of the first phase voltage. The second processing unit 1002 may be configured to determine that the frequency converter to be tested is a qualified frequency converter when the real-time electrical parameter is greater than or equal to the lower parameter limit value and less than or equal to the upper parameter limit value within the first preset time period.

It should be noted that the content in the above-mentioned embodiment of the testing method of the frequency converter is applicable to the embodiment of the testing system of the frequency converter, and the functions specifically implemented by the embodiment of the testing system of the frequency converter are the same as those of the embodiment of the testing method of the frequency converter, and the beneficial effects achieved by the embodiment of the testing method of the frequency converter are the same as those achieved by the embodiment of the testing method of the frequency converter.

Corresponding to the method of fig. 1, the embodiment of the application further provides a testing device for a frequency converter, with reference to fig. 9, and the specific structure of the testing device includes:

at least one processor 1011;

at least one memory 1012 for storing at least one program;

And when the at least one program is executed by the at least one processor, the at least one processor is enabled to implement the frequency converter testing method.

The content in the method embodiment is applicable to the embodiment of the device, and the functions specifically realized by the embodiment of the device are the same as those of the method embodiment, and the obtained beneficial effects are the same as those of the method embodiment.

Corresponding to the method of fig. 1, an embodiment of the present application also provides a computer readable storage medium having stored therein processor executable operations for performing the frequency converter testing method when executed by a processor.

The content in the above-mentioned frequency converter testing method embodiment is applicable to the present storage medium embodiment, and the functions specifically implemented by the present storage medium embodiment are the same as those of the above-mentioned frequency converter testing method embodiment, and the beneficial effects achieved by the above-mentioned frequency converter testing method embodiment are the same as those achieved by the above-mentioned frequency converter testing method embodiment.

In some alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flowcharts of the present application are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed, and in which sub-operations described as part of a larger operation are performed independently.

Furthermore, while the application is described in the context of functional modules, it should be appreciated that, unless otherwise indicated, one or more of the functions and/or features may be integrated in a single physical device and/or software module or may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion of the actual implementation of each module is not necessary to an understanding of the present application. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be apparent to those skilled in the art from consideration of their attributes, functions and internal relationships. Accordingly, one of ordinary skill in the art can implement the application as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative and are not intended to be limiting upon the scope of the application, which is to be defined in the appended claims and their full scope of equivalents.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in the form of a software product stored in a storage medium, including several programs for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. The storage medium includes a U disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, an optical disk, or other various media capable of storing program codes.

Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable programs for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with a program execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the programs from the program execution system, apparatus, or device and execute the programs. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the program execution system, apparatus, or device.

More specific examples (a non-exhaustive list) of the computer-readable medium would include an electrical connection (an electronic device) having one or more wires, a portable computer diskette (a magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.

It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable program execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of techniques known in the art, discrete logic circuits with logic gates for implementing logic functions on data signals, application specific integrated circuits with appropriate combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.

In the foregoing description of the present specification, reference has been made to the terms "one embodiment/example", "another embodiment/example", "certain embodiments/examples", and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

While the preferred embodiment of the present application has been described in detail, the present application is not limited to the embodiments described above, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.

Claims (10)

1. The frequency converter testing method is characterized by comprising the following steps of:

responding to a first operation input by a user, outputting a first phase voltage to enable a to-be-tested frequency converter to operate in a belt mode, and detecting real-time electric parameters of the to-be-tested frequency converter when the belt operates;

the first operation comprises a voltage phase type determining operation, a voltage grade determining operation and a power grade determining operation, wherein the voltage grade determining operation and the power grade determining operation are used for determining the upper parameter limit value of the electric parameter of the frequency converter, and the voltage grade determining operation and the power grade determining operation are used for determining the lower parameter limit value of the electric parameter of the frequency converter;

and when the real-time electric parameter is larger than or equal to the lower parameter limit value and smaller than or equal to the upper parameter limit value within a first preset time period, determining that the frequency converter to be tested is a qualified frequency converter.

2. The method for testing a frequency converter according to claim 1, wherein the outputting the first phase voltage in response to the first operation input by the user specifically comprises:

Responding to voltage phase type determining operation input by a user, analyzing the voltage phase type determining operation to obtain a voltage phase corresponding to the voltage phase type determining operation, and taking the voltage phase as the phase of the first phase voltage;

And responding to the voltage level determining operation and the power level determining operation input by a user, analyzing the voltage level determining operation and the power level determining operation to obtain voltage values corresponding to the voltage level determining operation and the power level determining operation, and taking the voltage values as the voltage values of the first phase voltage.

3. The method of transducer testing according to claim 1, wherein the method further comprises:

and when the real-time electric parameter is smaller than the lower parameter limit value or larger than the upper parameter limit value within a first preset time period, determining that the frequency converter to be tested is a fault frequency converter.

4. The method of claim 1, wherein the upper parameter limit comprises an upper voltage limit and the lower parameter limit comprises a lower voltage limit, the method further comprising:

when the phase of the first phase voltage is different from the phase corresponding to the voltage phase type determining operation, stopping the operation of the frequency converter and stopping the test;

and stopping the operation of the frequency converter and stopping the test when the voltage value of the first phase voltage is larger than the upper voltage limit value or smaller than the first lower voltage limit value.

5. The method of claim 1, wherein the first operation further comprises blocking an operation of a photoelectric switch.

6. The method of transducer testing according to claim 1, wherein the method further comprises:

Displaying the real-time electric parameters and storing the real-time electric parameters in a memory.

7. The method of claim 1, wherein the voltage phase type comprises single-phase alternating current and three-phase alternating current.

8. A transducer testing system, comprising:

The first processing unit is used for responding to a first operation input by a user, outputting a first phase voltage to enable the to-be-tested frequency converter to operate in a belt mode, and detecting real-time electric parameters of the to-be-tested frequency converter when the belt operates;

the first operation comprises a voltage phase type determining operation, a voltage grade determining operation and a power grade determining operation, wherein the voltage grade determining operation and the power grade determining operation are used for determining the upper parameter limit value of the electric parameter of the frequency converter, and the voltage grade determining operation and the power grade determining operation are used for determining the lower parameter limit value of the electric parameter of the frequency converter;

and the second processing unit is used for determining that the frequency converter to be tested is a qualified frequency converter when the real-time electric parameter is larger than or equal to the lower limit value of the parameter and smaller than or equal to the upper limit value of the parameter within a first preset time period.

9. A transducer testing device, comprising:

At least one processor;

at least one memory for storing at least one program;

the at least one program, when executed by the at least one processor, causes the at least one processor to implement the method of testing a frequency converter as claimed in any one of claims 1 to 7.

10. A computer readable storage medium, in which processor executable operations are stored, characterized in that the processor executable operations are for performing the frequency converter testing method according to any of claims 1-7 when being executed by a processor.