CN111157831A - Performance test method, device and equipment for power-on buffer resistor - Google Patents
Performance test method, device and equipment for power-on buffer resistor Download PDFInfo
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- CN111157831A CN111157831A CN202010164844.5A CN202010164844A CN111157831A CN 111157831 A CN111157831 A CN 111157831A CN 202010164844 A CN202010164844 A CN 202010164844A CN 111157831 A CN111157831 A CN 111157831A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
Abstract
The invention discloses a performance test method of a power-on buffer resistor, which considers that the buffer resistor to be tested usually forms an open circuit after being damaged, and a direct-current power supply cannot normally charge an energy storage capacitor through the buffer resistor to be tested, so that the failure of the buffer resistor to be tested can be judged after the energy storage capacitor is charged for a preset time period and under the condition that the voltage value of the energy storage capacitor is not more than a preset threshold value, the performance of the power-on buffer resistor can be accurately tested, namely, a servo driver or a frequency converter can be used under the condition that the performance of the power-on buffer resistor is known, and potential safety hazards are eliminated. The invention also discloses a device and equipment for testing the performance of the power-on buffer resistor, which have the same beneficial effects as the performance test of the power-on buffer resistor.
Description
Technical Field
The invention relates to the field of circuit element testing, in particular to a performance testing method of a power-on buffer resistor, and also relates to a performance testing device and equipment of the power-on buffer resistor.
Background
The main loop of the servo driver or the frequency converter generally comprises a rectifying circuit, a first end of the rectifying circuit is connected with an output end of the rectifying circuit, a second end of the rectifying circuit is connected with an upper electricity buffer resistor and an energy storage capacitor, the rectifying circuit can convert alternating current into direct current, the energy storage capacitor can store the direct current and provide stable direct current for a rear end load, because the energy storage capacitor is equivalent to a short circuit at the moment of electrifying, the electrifying buffer resistor can bear extremely large current at the moment of electrifying the energy storage capacitor to prevent the power supply from burning out, however, the requirement for the power-on buffer resistor is higher, and the prior art does not have a device for testing the performance of the power-on buffer resistor in a mature way, and cannot test the damage tolerance of the power-on buffer resistor, there is a certain potential safety hazard if the servo driver or the frequency converter is used without trade under the condition that the performance of the power-on buffer resistor is unknown.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a method for testing the performance of a power-on buffer resistor, which can accurately test the performance of the power-on buffer resistor, namely, a servo driver or a frequency converter can be used under the condition that the performance of the power-on buffer resistor is known, so that potential safety hazards are eliminated; another object of the present invention is to provide a device and an apparatus for testing the performance of a power-on buffer resistor, which can accurately test the performance of the power-on buffer resistor, that is, can use a servo driver or a frequency converter under the condition that the performance of the power-on buffer resistor is known, thereby eliminating the potential safety hazard.
In order to solve the technical problem, the invention provides a method for testing the performance of a power-on buffer resistor, which comprises the following steps:
controlling a direct current power supply to charge an energy storage capacitor through a buffer resistor to be tested;
judging whether the voltage value of the energy storage capacitor is greater than a preset threshold value after the energy storage capacitor is charged for a preset time period;
if not, judging that the buffer resistor to be tested is invalid.
Preferably, after the energy storage capacitor is charged for a preset time period and then whether the voltage value of the energy storage capacitor is greater than a preset threshold is determined, the method for testing the performance of the power-on buffer resistor further includes:
and if the voltage value of the energy storage capacitor is larger than the preset threshold value, controlling the direct current power supply to stop supplying power to the energy storage capacitor, and controlling an electric energy discharge module to discharge the electric energy in the energy storage capacitor.
Preferably, after the controlling the electric energy discharge module to discharge the electric energy in the energy storage capacitor, the method for testing the performance of the power-on buffer resistor further includes:
adding one to the test times with the initial value of 0;
judging whether the test times reach preset times or not;
if not, returning to the step of controlling the direct current power supply to charge the energy storage capacitor through the buffer resistor to be tested.
Preferably, the determining whether the voltage value of the energy storage capacitor is greater than a preset threshold specifically includes:
acquiring a voltage value of the energy storage capacitor through a voltage detection module;
judging whether the voltage value of the energy storage capacitor is larger than a preset threshold value or not;
the voltage detection module includes:
the first end of the energy storage capacitor is connected with the first end of the first divider resistor, and the second end of the energy storage capacitor is connected with the first end of the second divider resistor and the first divider resistor respectively;
and the second end of the second voltage-dividing resistor is respectively connected with the second end of the energy-storing capacitor and the processor.
Preferably, the controlling the dc power supply to stop supplying power to the energy storage capacitor and the controlling the electric energy discharge module to discharge the electric energy in the energy storage capacitor specifically include:
controlling the direct-current power supply to stop supplying power to the energy storage capacitor through a first control switch arranged between the direct-current power supply and the buffer capacitor to be detected;
and controlling the electric energy discharging module to discharge the electric energy in the energy storage capacitor through a second control switch arranged between the energy storage capacitor and the electric energy discharging module.
Preferably, the performance test method of the power-on buffer resistor is applied to a processor.
Preferably, the processor is a Programmable Logic Controller (PLC).
Preferably, after determining that the buffer resistor to be tested fails, the method for testing the performance of the power-on buffer resistor further includes:
and controlling a prompter to prompt that the buffer resistor to be tested is invalid.
In order to solve the above technical problem, the present invention further provides a device for testing the performance of a power-on buffer resistor, including:
the control module is used for controlling the direct-current power supply to charge the energy storage capacitor through the buffer resistor to be tested;
the judging module is used for judging whether the voltage value of the energy storage capacitor is larger than a preset threshold value after the energy storage capacitor is charged for a preset time period, and if not, the judging module is triggered;
and the judging module is used for judging that the buffer resistor to be detected is invalid.
In order to solve the above technical problem, the present invention further provides a device for testing the performance of a power-on buffer resistor, including:
a memory for storing a computer program;
a processor for implementing the steps of the method for testing the performance of the power-on buffer resistor when the computer program is executed.
The invention provides a method for testing the performance of a power-on buffer resistor, which considers that the buffer resistor to be tested usually forms an open circuit after being damaged, and a direct-current power supply cannot normally charge an energy storage capacitor through the buffer resistor to be tested, so that the method can judge that the buffer resistor to be tested fails after the energy storage capacitor is charged for a preset time period and under the condition that the voltage value of the energy storage capacitor is not more than a preset threshold value, can accurately test the performance of the power-on buffer resistor, and can also use a servo driver or a frequency converter under the condition that the performance of the power-on buffer resistor is known, thereby eliminating potential safety hazards.
The invention also provides a device and equipment for testing the performance of the power-on buffer resistor, which have the same beneficial effects as the performance test of the power-on buffer resistor.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for testing the performance of a power-on buffer resistor according to the present invention;
FIG. 2 is a schematic structural diagram of a device for testing the performance of a power-on snubber resistor according to the present invention;
FIG. 3 is a schematic structural diagram of a device for testing the performance of a power-on snubber resistor according to the present invention;
fig. 4 is a schematic structural diagram of another performance testing apparatus for power-on buffer resistors provided in the present invention.
Detailed Description
The core of the invention is to provide a method for testing the performance of the power-on buffer resistor, which can accurately test the performance of the power-on buffer resistor, namely, can be used for a servo driver or a frequency converter under the condition of known performance of the power-on buffer resistor, thereby eliminating potential safety hazard; another core of the present invention is to provide a device and an apparatus for testing the performance of a power-on buffer resistor, which can accurately test the performance of the power-on buffer resistor, that is, can be used for a servo driver or a frequency converter under the condition that the performance of the power-on buffer resistor is known, thereby eliminating the potential safety hazard.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for testing the performance of a power-on buffer resistor according to the present invention, where the method for testing the performance of a power-on buffer resistor includes:
step S1: controlling a direct current power supply to charge an energy storage capacitor through a buffer resistor to be tested;
specifically, considering that the direct-current power supply can perform a voltage division function and generate loss on the buffer resistor to be tested in the process of charging the energy storage capacitor each time, particularly at the moment when the direct-current power supply is just switched on the energy storage capacitor, due to the self characteristic of short circuit of the energy storage capacitor at the moment when the energy storage capacitor is switched on, all voltages of the direct-current power supply are loaded on the buffer resistor to be tested, namely, a large current passes through the buffer resistor to be tested, the loss of the buffer resistor to be tested is large at the moment, and therefore the loss resistance of the buffer resistor to be tested is required to be tested.
The direct current power supply can be of various types, but the voltage of the direct current power supply needs to reach the voltage value of a direct current part of a servo driver or a frequency converter in the practical application process, for example, about 311V (which can be converted by 220V alternating current) and the like, and in addition, the direct current power supply can be also applicable to a servo driver or a frequency converter using three phases of 380V alternating current to convert about 537V, so that a more real test effect can be achieved.
Step S2: judging whether the voltage value of the energy storage capacitor is greater than a preset threshold value after the energy storage capacitor is charged for a preset time period;
specifically, considering that the buffer resistor to be tested can normally divide voltage and form a path under a normal condition, so that the direct-current power supply gradually charges the energy storage capacitor, and if the buffer resistor to be tested is seriously damaged, current can not flow under a normal condition, that is, an open circuit is formed, therefore, the embodiment of the invention can judge whether the voltage value of the energy storage capacitor is greater than the preset threshold value after the energy storage capacitor is charged for a preset time period, and judge whether the buffer resistor to be tested is invalid by the method.
The preset time period may be set autonomously, for example, 10s, and the preset threshold may also be set autonomously, for example, 5V, and the embodiment of the present invention is not limited herein.
Step S3: if not, the buffer resistor to be tested is judged to be invalid.
Specifically, after the preset charging period, if the voltage value of the energy storage capacitor fails to exceed the preset threshold (and under the condition that the processor is normal), it can be proved that the buffer resistor to be tested is open-circuited (the energy storage capacitor cannot be charged) or the resistance value is abnormally increased, the performances such as the circulating current and the like of the buffer resistor to be tested are poor, and the buffer resistor to be tested cannot play a good role in a charging loop of the energy storage circuit, so that the failure of the buffer resistor to be tested can be judged.
In order to better test the performance of the buffer resistor to be tested, a single test is often insufficient, so that the steps can be repeated to repeatedly test the buffer resistor to be tested for multiple times.
The invention provides a method for testing the performance of a power-on buffer resistor, which considers that the buffer resistor to be tested usually forms an open circuit after being damaged, and a direct-current power supply cannot normally charge an energy storage capacitor through the buffer resistor to be tested, so that the method can judge that the buffer resistor to be tested fails after the energy storage capacitor is charged for a preset time period and under the condition that the voltage value of the energy storage capacitor is not more than a preset threshold value, can accurately test the performance of the power-on buffer resistor, and can also use a servo driver or a frequency converter under the condition that the performance of the power-on buffer resistor is known, thereby eliminating potential safety hazards.
On the basis of the above-described embodiment:
as a preferred embodiment, after the energy storage capacitor is charged for a preset time period and then whether the voltage value of the energy storage capacitor is greater than a preset threshold is determined, the method for testing the performance of the power-on buffer resistor further includes:
and if the voltage value of the energy storage capacitor is larger than the preset threshold value, controlling the direct current power supply to stop supplying power to the energy storage capacitor, and controlling the electric energy discharge module to discharge the electric energy in the energy storage capacitor.
Specifically, when the voltage of the energy storage capacitor is greater than the preset value, it can be proved that the energy storage capacitor has been normally and smoothly charged, so that it can be determined that the buffer resistor to be tested is effective, and in order to rapidly charge the energy storage capacitor for the next time, that is, to rapidly perform the next test on the buffer resistor to be tested, the electric energy in the energy storage capacitor must be rapidly discharged.
As a preferred embodiment, after controlling the power bleeding module to bleed off the power in the energy storage capacitor, the method for testing the performance of the power-on buffer resistor further includes:
adding one to the test times with the initial value of 0;
judging whether the test times reach preset times or not;
if not, returning to the step of controlling the direct current power supply to charge the energy storage capacitor through the buffer resistor to be tested.
Specifically, the testing method in the embodiment of the invention can be applied to a processor, so that the testing of the buffer resistor to be tested for the preset times can be automatically performed, the labor is saved, and the working efficiency is improved.
The preset number may be set autonomously, for example, may be set to 100 times, and the embodiment of the present invention is not limited herein.
For better explaining the embodiment of the present invention, please refer to fig. 2, and fig. 2 is a schematic structural diagram of a performance testing apparatus for a power-on buffer resistor according to the present invention, and as a preferred embodiment, the step of determining whether the voltage value of the energy storage capacitor is greater than the preset threshold specifically includes:
acquiring a voltage value of an energy storage capacitor through a voltage detection module;
judging whether the voltage value of the energy storage capacitor is larger than a preset threshold value or not;
the voltage detection module includes:
the first end of the first divider resistor is connected with the first end of the energy storage capacitor, and the second end of the first divider resistor is connected with the first end of the second divider resistor and the processor respectively;
and the second end of the second divider resistor is respectively connected with the second end of the energy storage capacitor and the processor.
Specifically, the voltage detection module can be composed of two divider resistors and has the advantages of simple structure and accurate detection.
As shown in fig. 2, the first divider resistor may include a plurality of resistors, for example, R4, R5, R6, and R7, and the first divider resistor may be a plurality of resistors without a single resistor having a very large resistance value, which is not limited herein.
Specifically, in fig. 2, all the parts on the left side of the tested buffer resistor R1 can be regarded as a dc power supply as a whole, and the dc power supply is subjected to secondary filtering, so that a better dc power without an ac component can be obtained, and the test can be conveniently performed.
Of course, the dc power supply may be of other types, for example, the rectifying unit 2 may be omitted from the dc power supply in fig. 2, or all devices between the rectifying unit 2 and the ac single-phase 220V input may be omitted, and the embodiment of the present invention is not limited herein.
Specifically, this application can carry out the limit test to the buffer resistor that servo driver or converter used, and the electrolytic capacitor that the rear end used and the consumption of buffer resistor can be adjusted, gets the adjustment circuit according to the energy storage capacitor capacity that servo driver or converter designed and the resistance consumption size of buffer resistor and is surveyed buffer resistor resistance consumption. The charging time of the electrolytic capacitor is T ═ R × C, and the charging time is proportional to the resistance value of the buffer resistor and the capacity of the bus capacitor. When the servo driver or the frequency converter is just powered on, the filter capacitor capacity C2 on the direct current side is very large, which is equivalent to short circuit at the moment of charging, the current is very large, the instantaneous current I1 borne by the buffer resistor is 311V/R1, and the current flowing through the resistor is slowly reduced during slow charging. Therefore, the bus capacitance of the test method is large, and the time of the charge-discharge process can be about 30 s.
The electric energy bleeding module may be of various types, for example, the electric energy bleeding module may be a discharge resistor in fig. 2, and the embodiment of the present invention is not limited herein.
Of course, the voltage detection module may be of another type besides two voltage dividing resistors, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the controlling the dc power supply to stop supplying power to the energy storage capacitor, and the controlling the electric energy discharging module to discharge the electric energy in the energy storage capacitor specifically includes:
controlling the direct-current power supply to stop supplying power to the energy storage capacitor through a first control switch arranged between the direct-current power supply and the buffer capacitor to be detected;
and the second control switch arranged between the energy storage capacitor and the electric energy discharge module is used for controlling the electric energy discharge module to discharge the electric energy in the energy storage capacitor.
Specifically, the control switches are used for controlling the power supply of the direct-current power supply and the access of the electric energy discharge module respectively, so that the effects of quick response and accurate control can be achieved, the two control switches can be of various types respectively, for example, as shown in fig. 2, the first control switch is the relay K1 in fig. 2, the second control switch is the relay K2 in fig. 2, and the relay has the advantages of low cost, simple structure, long service life and the like.
When the processor switches the first control switch and the second control switch, a certain time interval can be added in the switching process according to different types of the control switches so as to prevent the first control switch and the second control switch from being conducted simultaneously.
Of course, the first control switch and the second control switch may be of other types besides the relay, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the performance test method of the power-on buffer resistor is applied to a processor.
In particular, when applied to a processor, it is possible to liberate labor and improve the degree of automation.
Of course, the performance testing method for the power-on buffer resistor may be manually performed besides being applied to the processor, and the embodiment of the present invention is not limited herein.
In a preferred embodiment, the processor is a programmable logic controller PLC.
Specifically, a PLC (Programmable Logic Controller) has the advantages of small size, low cost, high processing speed, and the like.
Of course, the processor may be of various types other than a PLC, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, after determining that the buffer resistor to be tested fails, the method for testing the performance of the power-on buffer resistor further includes:
and the control prompter prompts the failure of the buffer resistor to be tested.
Specifically, in order to enable the worker to know the failure of the buffer resistor to be tested more quickly, the prompt can be controlled to prompt the failure of the buffer resistor to be tested so that the worker can know the failure of the buffer resistor to be tested quickly and can perform adaptive processing, and the working efficiency is further improved.
Of course, except for the prompt, the direct current power supply may be controlled to stop supplying power, so as to prevent the front buffer resistor R2, the buffer resistor R1 to be tested, and the rear discharge resistor R3 in fig. 2 from being directly connected to the 310V direct current, so that the buffer resistor R2, the buffer resistor R1 to be tested, and the rear discharge resistor R3 are burned out.
The prompting device may be of various types, for example, a display or various types of alarms, and the embodiment of the present invention is not limited herein.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a performance testing apparatus for a power-on buffer resistor according to the present invention, including:
the control module 1 is used for controlling the direct-current power supply to charge the energy storage capacitor through the buffer resistor to be tested;
the judging module 2 is used for judging whether the voltage value of the energy storage capacitor is larger than a preset threshold value after the energy storage capacitor is charged for a preset time period, and if not, the judging module 3 is triggered;
and the judging module 3 is used for judging that the buffer resistor to be detected is invalid.
For the description of the performance testing apparatus for a power-on buffer resistor provided in the embodiment of the present invention, reference is made to the foregoing embodiment of the performance testing method for a power-on buffer resistor, and details of the embodiment of the present invention are not repeated herein.
Referring to fig. 4, fig. 4 is a schematic structural diagram of another performance testing apparatus for power-on buffer resistors provided in the present invention, including:
a memory 4 for storing a computer program;
and a processor 5, configured to implement the steps of the performance testing method for the power-on buffer resistor as in the foregoing embodiments when executing the computer program.
For the description of the performance testing apparatus for a power-on buffer resistor provided in the embodiment of the present invention, reference is made to the foregoing embodiment of the performance testing method for a power-on buffer resistor, and details of the embodiment of the present invention are not repeated herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A performance test method of a power-on buffer resistor is characterized by comprising the following steps:
controlling a direct current power supply to charge an energy storage capacitor through a buffer resistor to be tested;
judging whether the voltage value of the energy storage capacitor is greater than a preset threshold value after the energy storage capacitor is charged for a preset time period;
if not, judging that the buffer resistor to be tested is invalid.
2. The method for testing the performance of the power-on buffer resistor according to claim 1, wherein after the energy storage capacitor is charged for a preset time period and then whether the voltage value of the energy storage capacitor is greater than a preset threshold value is determined, the method for testing the performance of the power-on buffer resistor further comprises:
and if the voltage value of the energy storage capacitor is larger than the preset threshold value, controlling the direct current power supply to stop supplying power to the energy storage capacitor, and controlling an electric energy discharge module to discharge the electric energy in the energy storage capacitor.
3. The method for testing the performance of the power-on buffer resistor according to claim 2, wherein after the controlling the power bleeding module to bleed off the power in the energy storage capacitor, the method for testing the performance of the power-on buffer resistor further comprises:
adding one to the test times with the initial value of 0;
judging whether the test times reach preset times or not;
if not, returning to the step of controlling the direct current power supply to charge the energy storage capacitor through the buffer resistor to be tested.
4. The method for testing the performance of the power-on buffer resistor according to claim 1, wherein the step of determining whether the voltage value of the energy storage capacitor is greater than a preset threshold specifically comprises:
acquiring a voltage value of the energy storage capacitor through a voltage detection module;
judging whether the voltage value of the energy storage capacitor is larger than a preset threshold value or not;
the voltage detection module includes:
the first end of the energy storage capacitor is connected with the first end of the first divider resistor, and the second end of the energy storage capacitor is connected with the first end of the second divider resistor and the first divider resistor respectively;
and the second end of the second voltage-dividing resistor is respectively connected with the second end of the energy-storing capacitor and the processor.
5. The method for testing the performance of the power-on buffer resistor according to claim 2, wherein the controlling the dc power supply to stop supplying power to the energy storage capacitor and the controlling the electric energy discharging module to discharge the electric energy in the energy storage capacitor specifically comprises:
controlling the direct-current power supply to stop supplying power to the energy storage capacitor through a first control switch arranged between the direct-current power supply and the buffer capacitor to be detected;
and controlling the electric energy discharging module to discharge the electric energy in the energy storage capacitor through a second control switch arranged between the energy storage capacitor and the electric energy discharging module.
6. The method for testing the performance of a power-on buffer resistor as claimed in claim 5, wherein the method for testing the performance of a power-on buffer resistor is applied to a processor.
7. The method for testing the performance of the power-on buffer resistor as recited in claim 6, wherein the processor is a Programmable Logic Controller (PLC).
8. The method for testing the performance of the power-on buffer resistor according to any one of claims 1 to 7, wherein after determining that the buffer resistor to be tested fails, the method for testing the performance of the power-on buffer resistor further comprises:
and controlling a prompter to prompt that the buffer resistor to be tested is invalid.
9. A performance testing device for a power-on buffer resistor is characterized by comprising:
the control module is used for controlling the direct-current power supply to charge the energy storage capacitor through the buffer resistor to be tested;
the judging module is used for judging whether the voltage value of the energy storage capacitor is larger than a preset threshold value after the energy storage capacitor is charged for a preset time period, and if not, the judging module is triggered;
and the judging module is used for judging that the buffer resistor to be detected is invalid.
10. A performance testing apparatus for powering up a snubber resistor, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method for performance testing of a power-on buffer resistor as claimed in any one of claims 1 to 8 when executing the computer program.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010164844.5A CN111157831B (en) | 2020-03-10 | 2020-03-10 | Performance test method, device and equipment for power-on buffer resistor |
| PCT/CN2020/082669 WO2021179367A1 (en) | 2020-03-10 | 2020-04-01 | Performance test method, apparatus and device for power-on snubber resistor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010164844.5A CN111157831B (en) | 2020-03-10 | 2020-03-10 | Performance test method, device and equipment for power-on buffer resistor |
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| CN111157831A true CN111157831A (en) | 2020-05-15 |
| CN111157831B CN111157831B (en) | 2021-02-05 |
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Cited By (1)
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| CN111884288A (en) * | 2020-07-23 | 2020-11-03 | 广东电网有限责任公司清远供电局 | Power supply circuit based on semiconductor switch and control method thereof |
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| CN114295974B (en) * | 2021-12-30 | 2023-11-10 | 上海儒竞智控技术有限公司 | Method and circuit for detecting failure of precharge relay |
| CN114636860B (en) * | 2022-02-15 | 2022-11-15 | 深圳市正浩创新科技股份有限公司 | Method and device for verifying buffer resistor, terminal and storage medium |
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| CN111157831B (en) | 2021-02-05 |
| WO2021179367A1 (en) | 2021-09-16 |
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