CN209992594U - Universal testing device for power unit of high-voltage frequency converter - Google Patents
Universal testing device for power unit of high-voltage frequency converter Download PDFInfo
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- CN209992594U CN209992594U CN201920552424.7U CN201920552424U CN209992594U CN 209992594 U CN209992594 U CN 209992594U CN 201920552424 U CN201920552424 U CN 201920552424U CN 209992594 U CN209992594 U CN 209992594U
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- voltage frequency
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Abstract
The utility model discloses a general testing device for a power unit of a high-voltage frequency converter, which comprises a logic analyzer, a computer and a waveform generator; the logic analyzer is respectively connected with the high-voltage frequency converter main controller and the computer through a line, and reads the wave-transmitting rule of the high-voltage frequency converter main controller and records the wave-transmitting rule in the computer; the waveform data recorded in the computer can be used for firing a waveform generator circuit; the waveform generator is connected with the power unit to be tested and the reactor in sequence through circuits, and simulates a main controller of the high-voltage frequency converter to send instructions to the power unit to be tested according to waveform data; the computer is connected with the power unit to be tested so as to judge the maintenance effect of the power unit to be tested. The utility model discloses a testing arrangement convenient operation is nimble, human-computer interface is friendly, can accomplish single power unit's multiple test, has greatly improved staff's debugging speed, and it is accurate to power unit fault point detection, is showing and is reducing user's converter maintenance running cost.
Description
Technical Field
The utility model belongs to the technical field of the high-voltage inverter, specifically a general testing arrangement of high-voltage inverter power unit.
Background
The high-voltage frequency converter is widely used in China, the maintenance amount is gradually increased, part of elements need to be checked and replaced after the high-voltage frequency converter operates for 3-5 years, and as a power current device, the fault of a power unit module accounts for 70% of the fault of the high-voltage frequency converter. The purchase cost of a single power unit is about 2.8-6.8 ten thousand yuan, the maintenance cost is generally 1.2-2.8 ten thousand yuan, and each high-voltage frequency converter is generally provided with 18-24 power unit modules, so that the maintenance and replacement cost of the power unit modules of the frequency converter is very high, and the test after the maintenance of the power unit modules is particularly important. However, different manufacturers of the power unit modules of the high-voltage frequency converter adopt different communication protocols, and the manufacturers cannot provide corresponding testing devices for technical secrecy reasons, so that great difficulty is brought to the testing of the power unit of the high-voltage frequency converter.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a simple structure, convenient to use's general testing arrangement of high-voltage inverter power unit.
The utility model adopts the technical proposal that: a universal testing device for a power unit of a high-voltage frequency converter comprises a logic analyzer, a computer and a waveform generator; the logic analyzer is respectively connected with the high-voltage frequency converter main controller and the computer through lines, and reads the wave-sending rule of the high-voltage frequency converter main controller and records the wave-sending rule in the computer; the waveform data recorded in the computer can be used for firing a waveform generator circuit; the waveform generator is sequentially connected with the power unit to be tested and the reactor through a circuit, and simulates a main controller of the high-voltage frequency converter to send instructions to the power unit to be tested according to waveform data; and the computer is connected with the power unit to be tested so as to judge the maintenance effect of the power unit to be tested.
Furthermore, the power unit to be tested is connected with a power supply and is powered by the power supply.
The utility model has the advantages that: the testing device is convenient and flexible to operate, friendly in human-computer interface, capable of completing various tests of a single power unit, such as low-voltage function test, rated voltage full-load test, rated voltage overload test and overvoltage function test, greatly improving the debugging speed of workers, accurate in power unit fault point detection, and remarkably reducing the maintenance and operation cost of a user frequency converter.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the device comprises a high-voltage frequency converter main controller, 2, a logic analyzer, 3, a computer, 4, a waveform generator, 5, a power supply, 6, a power unit to be tested, 7 and a reactor.
Detailed Description
In order to understand the technical solution of the present invention more clearly, the present invention will be further explained with reference to the accompanying drawings.
The general testing device for the power unit of the high-voltage frequency converter shown in fig. 1 comprises a logic analyzer 2, a computer 3 and a waveform generator 4; the logic analyzer 2 is respectively connected with the high-voltage frequency converter main controller 1 and the computer 3 through lines, reads the wave-sending rule of the high-voltage frequency converter main controller 1 and records the wave-sending rule in the computer 3; the computer 3 is internally provided with upper computer software, namely control software running in the computer 3 and responsible for recording the waveform data read by the logic analyzer 2, and the waveform data recorded in the computer 3 can be used for firing a circuit of the waveform generator 4; the waveform generator 4 is sequentially connected with the power unit 6 to be tested and the reactor 7 through a circuit, and the waveform generator 4 simulates the main controller 1 of the high-voltage frequency converter to send an instruction to the power unit 6 to be tested according to waveform data; the computer 3 is connected with the power unit 6 to be tested to judge the maintenance effect of the power unit 6 to be tested.
The power unit 6 to be tested is connected with the power supply 5 and is powered by the power supply 5; the power unit 6 to be tested comprises an IGBT, a unit controller, a driving circuit, interface equipment, peripheral equipment and the like.
The working principle is as follows: when a test is needed, the logic analyzer 2 is respectively connected with the high-voltage frequency converter main controller 1 and the computer 3, and the logic analyzer 2 is used for reading the wave-transmitting rule of the main controller and recording the wave-transmitting rule in the upper computer software of the computer 3; firing a waveform generator 4 circuit according to a waveform recorded in upper computer software of the computer 3; the waveform generator 4 can simulate the master controller to send instructions to the power unit 6 to be tested according to waveform records, the power unit 6 to be tested is connected with the reactor 7, and the reactor 7 has a load function; the computer 3 is connected with the power unit 6 to be tested to judge the maintenance effect of the power unit 6 to be tested.
The computer program related to the computer 3 has already been applied for related software copyright at 2019.2.16, and the software copyright name is: the general testing device for the high-voltage frequency converter power unit comprises upper computer software V1.0, and the registration number of a soft book is 2019SR 0309774. Accordingly, the computer program related to the present invention is a prior art.
The utility model discloses testing arrangement convenient operation is nimble, human-computer interface is friendly, can accomplish single power unit's multiple test, for example low pressure functional test, rated voltage are full load test, rated voltage overload test and excessive pressure functional test, have greatly improved staff's debugging speed, and it is accurate to power unit fault point detection, is showing reduction user's converter maintenance running cost.
The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.
Claims (2)
1. The utility model provides a general testing arrangement of high-voltage inverter power unit which characterized in that: comprises a logic analyzer (2), a computer (3) and a waveform generator (4); the logic analyzer (2) is respectively connected with the high-voltage frequency converter main controller (1) and the computer (3) through lines, and reads the wave-transmitting rule of the high-voltage frequency converter main controller (1) and records the wave-transmitting rule in the computer (3); the waveform data recorded in the computer (3) can be used for firing a waveform generator (4) circuit; the waveform generator (4) is sequentially connected with the power unit (6) to be tested and the reactor (7) through a line, and the waveform generator (4) simulates the main controller (1) of the high-voltage frequency converter to send an instruction to the power unit (6) to be tested according to waveform data; and the computer (3) is connected with the power unit (6) to be tested so as to judge the maintenance effect of the power unit (6) to be tested.
2. The universal testing device for the power unit of the high-voltage frequency converter according to claim 1, wherein: the power unit (6) to be tested is connected with the power supply (5) and is powered by the power supply (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920552424.7U CN209992594U (en) | 2019-04-23 | 2019-04-23 | Universal testing device for power unit of high-voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920552424.7U CN209992594U (en) | 2019-04-23 | 2019-04-23 | Universal testing device for power unit of high-voltage frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209992594U true CN209992594U (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920552424.7U Expired - Fee Related CN209992594U (en) | 2019-04-23 | 2019-04-23 | Universal testing device for power unit of high-voltage frequency converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN209992594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255485A (en) * | 2020-10-20 | 2021-01-22 | 云南电网有限责任公司电力科学研究院 | Low-voltage fault detection device for power module of frequency modulation test platform of new energy unit |
| CN112305350A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Fault detection device for power module of frequency modulation test platform of new energy unit |
-
2019
- 2019-04-23 CN CN201920552424.7U patent/CN209992594U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112255485A (en) * | 2020-10-20 | 2021-01-22 | 云南电网有限责任公司电力科学研究院 | Low-voltage fault detection device for power module of frequency modulation test platform of new energy unit |
| CN112305350A (en) * | 2020-10-20 | 2021-02-02 | 云南电网有限责任公司电力科学研究院 | Fault detection device for power module of frequency modulation test platform of new energy unit |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200124 Termination date: 20210423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |