CN103884941A - High-voltage inverter, power unit and method and system for testing power unit - Google Patents
High-voltage inverter, power unit and method and system for testing power unit Download PDFInfo
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- CN103884941A CN103884941A CN201410123306.6A CN201410123306A CN103884941A CN 103884941 A CN103884941 A CN 103884941A CN 201410123306 A CN201410123306 A CN 201410123306A CN 103884941 A CN103884941 A CN 103884941A
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Abstract
The invention discloses a high-voltage inverter, a power unit and a method and system for testing the power unit. The method for testing the power unit comprises the steps that firstly, a high-potential collecting unit is connected with a data interface of the power unit of the high-voltage inverter, so that information to be tested of the power unit is collected, and the information to be tested is converted into optical signals; secondly, a low-potential acquisition unit converts the optical signals into electric signals and tests the electric signals; thirdly, the high-potential acquisition unit is only connected with the power unit needing to be tested, it means that only the information to be tested of one power unit needing to be tested needs to be collected, and the situation that in the prior art, the information to be tested of all power units is collected firstly and then needed information is called from the information is avoided; in this way, the size of data needing to be processed by the whole system for testing the power unit is greatly reduced, and real-time performance is guaranteed.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly, relate to a kind of high voltage converter, power cell and method of testing thereof and test macro.
Background technology
Cell level connection type high-voltage frequency converter, as shown in Figure 1, its three-phase output voltage U, V, W are obtained by the mutual overlapped in series of output voltage of inside multiple low pressure and low powers unit Unit_1 to Unit_N respectively; Due to the electromotive force cumulative high potential that forms mutually of power cell after series connection, common testing tool equipment can not be accomplished safe electrical isolation, and slip-stick artist cannot on-line testing monitor its operation, brings a lot of inconvenience to the on-the-spot test of equipment.Prior art adopts the method to wherein each power cell carries out respectively on-line testing, it mainly contains in single power cell low pressure high-tension electricity on electrical testing and complete machine and each power cell two kinds of modes of test of not connecting, but above-mentioned two kinds of test modes all need to just can obtain the much information of its required measurement through repeated disassembled and assembled by a large amount of testing tools, and can not simulate complete machine environment and carrying load ability thereof.
Therefore prior art adopts the method for utilizing high speed fibre on-line testing power cell shown in Fig. 1 more, the complete connection of power cell Unit_1 to Unit_N of each phase, upper high-tension electricity operation, the service data of all power cells is exported by its inside chip, is more all uploaded to master control borad 101 by high speed fibre; On-the-spot test personnel utilize host computer testing apparatus 102 to read by data line/netting twine the data that on master control borad 101, corresponding units is uploaded up to carry out test monitoring, but in the method, the deal with data amount of master control borad 101 is large, and its real-time is difficult to guarantee.
Summary of the invention
In view of this, the invention provides a kind of high voltage converter, power cell and method of testing thereof and test macro, to solve the poor problem of prior art real-time.
A kind of power cell test macro, is applied to the test of the power cell of high voltage converter, and described power cell comprises data-interface, and described power cell test macro comprises:
Gather the information measured of described power cell and described information measured is converted to the high potential collecting unit of light signal; The input end of described high potential collecting unit is as the input end of described power cell test macro, and the data-interface of the described power cell of testing with needs is connected;
The low potential test cell that described light signal is converted to electric signal and described electric signal is tested; The input end of described low potential test cell is connected with the output terminal of described high potential collecting unit.
Preferably, the input end of described low potential test cell is connected with the output terminal of described high potential collecting unit by optical fiber.
Preferably, described high potential collecting unit comprises:
Gather the data collecting card of the information measured of described power cell; The input end of described data collecting card is the input end of described high potential collecting unit;
Described information measured is converted to the first photoelectric conversion device of light signal; The input end of described the first photoelectric conversion device is connected with the output terminal of described data collecting card by netting twine;
The output terminal of described the first photoelectric conversion device is the output terminal of described high potential collecting unit.
Preferably, described low potential test cell comprises:
Described light signal is converted to the second photoelectric conversion device of electric signal; The input end of described the second photoelectric conversion device is the input end of described low potential test cell;
The host computer testing apparatus that described electric signal is tested; The input end of described host computer testing apparatus is connected with the output terminal of described the second photoelectric conversion device by netting twine.
Preferably, described data collecting card is distributed peripheral data capture card.
A kind of power cell, is applied to high voltage converter, comprising: the data-interface being connected with the input end of above-mentioned arbitrary described power cell test macro.
A kind of power cell, is applied to high voltage converter, comprising: with the data-interface that the input end of power cell test macro described above is connected, described data-interface is distributed peripheral data interface.
A kind of high voltage converter, comprises multiple power cells, and described at least one, power cell comprises: the data-interface being connected with the input end of above-mentioned arbitrary described power cell test macro.
A kind of high voltage converter, comprises multiple power cells, and described power cell comprises: with the data-interface that the input end of power cell test macro described above is connected, described data-interface is distributed peripheral data interface.
A kind of power cell method of testing, be applied to the power cell test macro of high voltage converter, described power cell test macro comprises the high potential collecting unit being connected with the power cell of needs test and the low potential test cell being connected with described high potential collecting unit, and described power cell method of testing comprises:
Described high potential collecting unit gathers the information measured of described power cell and described information measured is converted to light signal;
Described low potential test cell is converted to electric signal by described light signal and described electric signal is tested.
Preferably, described high potential collecting unit comprises: data collecting card and the first photoelectric conversion device; Described high potential collecting unit gathers the information measured of described power cell and the step that described information measured is converted to light signal is comprised:
Described data collecting card gathers the information measured of described power cell;
Described information measured is converted to light signal by described the first photoelectric conversion device.
Preferably, described low potential test cell comprises: the second photoelectric conversion device and host computer testing apparatus; Described light signal is converted to electric signal by described low potential test cell and step that described electric signal is tested comprises:
Described light signal is converted to electric signal by described the second photoelectric conversion device;
Described host computer testing apparatus is tested described electric signal.
Can find out from above-mentioned technical scheme, power cell test macro disclosed by the invention, be connected with the data-interface of the power cell of high voltage converter by high potential collecting unit, gather the information measured of described power cell and described information measured is converted to light signal; The complete connection of described high voltage converter, can simulate its complete machine environment and detect its carrying load ability; Then by low potential test cell, described light signal is converted to electric signal and described electric signal is tested; Between described high potential collecting unit and low potential test cell, by transmission and the conversion of described light signal, guarantee the isolation of high low potential; And described high potential collecting unit is only connected with the described power cell of needs test, also only need the information measured of the power cell that gathers a needs test, after gathering the information measured of all power cells in prior art, transfer again the information wherein needing, make whole power cell test macro need data volume to be processed greatly to reduce, guaranteed real-time.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the disclosed power cell test macro of prior art schematic diagram;
Fig. 2 is the disclosed a kind of power cell test macro schematic diagram of the embodiment of the present invention;
Fig. 3 is disclosed another the power cell test macro schematic diagram of another embodiment of the present invention;
Fig. 4 is disclosed another the power cell test macro schematic diagram of another embodiment of the present invention;
Fig. 5 is the disclosed a kind of high voltage converter of another embodiment of the present invention and power cell test macro connection diagram;
Fig. 6 is the disclosed a kind of power cell method of testing process flow diagram of another embodiment of the present invention;
Fig. 7 is disclosed another the power cell method of testing process flow diagram of another embodiment of the present invention;
Fig. 8 is disclosed another the power cell method of testing process flow diagram of another embodiment of the present invention;
Fig. 9 is disclosed another the power cell method of testing process flow diagram of another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of power cell test macro, to solve the poor problem of prior art real-time.
Concrete, as shown in Figure 2, described power cell test macro, is applied to the power cell Unit_N of high voltage converter, and power cell Unit_N comprises data-interface 200, and described power cell test macro comprises:
Input end is as the input end of described power cell test macro, the high potential collecting unit 201 being connected with the data-interface 200 of the power cell Unit_N of needs test;
The low potential test cell 202 that input end is connected with the output terminal of high potential collecting unit 201 by optical fiber.
Concrete principle of work is:
High potential collecting unit 201 gathers the information measured of power cell Unit_N and described information measured is converted to light signal; Wherein, described information measured is all information that need to test power cell Unit_N, comprises input current, busbar voltage, output voltage and the carrying load ability under complete machine environment thereof etc.The complete connection of described high voltage converter, can simulate its complete machine environment and detect its carrying load ability.Low potential test cell 202 is converted to electric signal by described light signal and described electric signal is tested.High potential collecting unit 201 receives high potential voltage from power cell Unit_N, and working in the inside of low potential test cell 202 under low potential voltage, has guaranteed the isolation of high low potential, has guaranteed the security of test.
The disclosed power cell test macro of the present embodiment, high potential collecting unit 201 is only connected with the power cell Unit_N of needs test, also only need the information measured of the power cell Unit_N that gathers a needs test, after gathering the information measured of all power cells in prior art, transfer again the information wherein needing, make whole power cell test macro need data volume to be processed greatly to reduce, guaranteed real-time.
Preferably, the input end of low potential test cell 202 is connected with the output terminal of high potential collecting unit 201 by optical fiber.
Concrete, available technology adopting high speed fibre is realized the transmission of high speed signal, and not only cost is high, and is easily disturbed and disturbs other surrounding devices; And replace high speed fibre of the prior art with ordinary optic fibre between the high potential collecting unit 201 of the present embodiment and low potential test cell 202, both can realize the isolation of high low potential, guarantee the security of test, also realized the reduction of testing cost, avoided signal and equipment to be interfered simultaneously.
Preferably, as shown in Figure 3, high potential collecting unit 201 comprises:
Input end is the data collecting card 301 of the input end of high potential collecting unit 201;
The first photoelectric conversion device 302 that input end is connected with the output terminal of data collecting card 301 by netting twine; The output terminal of the first photoelectric conversion device 302 is the output terminal of high potential collecting unit 201.
Concrete, data collecting card 301 gathers the information measured of power cell Unit_N; The first photoelectric conversion device 302 receives described information measured, and exports after described information measured is converted to light signal.
Preferably, as shown in Figure 4, low potential test cell 202 comprises:
Input end is the second photoelectric conversion device 401 of the input end of low potential test cell 202;
The host computer testing apparatus 402 that input end is connected with the output terminal of the second photoelectric conversion device 401 by netting twine.
Concrete, the second photoelectric conversion device 401 receives described light signal by optical fiber, and described light signal is converted to electric signal; Host computer testing apparatus 402 receives described electric signal, and described electric signal is tested, and analyzes and judges that whether the information such as electric current, voltage of power cell Unit_N is normal.
The electric signal of high potential is converted to light signal by the first photoelectric conversion device 302, and the second photoelectric conversion device 401 is converted to described light signal the electric signal of low potential, has realized the isolation of high low potential.Light signal also has low-loss in the process of transmission simultaneously, low delay, and the advantage of low distortion, can be in the real effectiveness of accomplishing guarantee in high-voltage safety is isolated test data.
Preferably, the data collecting card 301 in Fig. 3 is distributed peripheral data capture card.
Accordingly, power cell Unit_N employing data-interface 200 is also distributed peripheral data interface.Also be, between data collecting card 301 and data-interface 200, adopt PROFIBUS-DP (decent ralized periphery) to communicate, for a kind of concrete communication mode, in actual applied environment, can select depending on its actual conditions, be not specifically limited herein.
Another embodiment of the present invention also provides a kind of power cell, is applied to high voltage converter, comprises the data-interface being connected with the input end of arbitrary described power cell test macro in above-described embodiment.
In prior art, in order to realize the output of multiple information measured of described power cell, need a lot of resources of chip, cost is very high, and described power cell in the present embodiment adopts data-interface to realize above-mentioned functions, has obtained very large saving from cost.
Another embodiment of the present invention also provides a kind of high voltage converter, comprises multiple power cells, and described at least one, power cell comprises the data-interface being connected with the input end of arbitrary described power cell test macro in above-described embodiment.
Figure 5 shows that the specific embodiment that a high voltage converter is connected with power cell test macro, the output of high voltage converter three-phase high-voltage alternating current is respectively U, V, W; Each is obtained by multiple power cell Unit_1 to Unit_N series connection of same number; The initial output terminal of first unit of every phase links together, and forms " Y " type neutral point O, then each other unit series connection successively mutually, and the end output terminal of each last unit being in series is as the output terminal of high voltage converter complete machine; Unit output voltage and casing electromotive force be with respect to " Y " type neutral point O place, and the unit electromotive force from neutral point O away from is more higher.Common testing tool equipment and electrical signal data line cannot be accomplished safe insulation, and high-tension electricity easily seals in low-voltage equipment by these approach, and on-the-spot test personnel and equipment are damaged; Must accomplish high pressure isolation in order to ensure the safety of on-the-spot test personnel and equipment.
Power cell in described high voltage converter comprises the data-interface being connected with the input end of arbitrary described power cell test macro in above-described embodiment, coordinate arbitrary described power cell test macro in above-described embodiment, by the conversion of electric signal and light signal, cut off high pressure crosstalk path, played the effect of isolated high-voltage.
In high voltage transducer power unit on-line testing process, can make frequency converter complete machine output terminal U, V, W unsettled, carry out frequency converter no load test, the ruuning situation of its internal power unit when test monitoring frequency converter is unloaded; Also can frequency converter complete machine output terminal U, V, W connect motor load, motor load is progressively loaded into fully loaded from zero load, the ruuning situation of its internal power unit when the load of test monitoring frequency converter translator.Can complete on-line testing monitor its internal power unit ruuning situation under different operating modes of described high voltage converter like this, and can simulate its complete machine environment and detect its carrying load ability, greatly facilitate field engineer's test, improved work efficiency.
Another embodiment of the present invention also provides a kind of power cell method of testing, be applied to the power cell test macro of high voltage converter, described power cell test macro comprises the high potential collecting unit being connected with the power cell of needs test and the low potential test cell being connected with described high potential collecting unit, described power cell method of testing, as shown in Figure 6, comprising:
S101, described high potential collecting unit gather the information measured of described power cell and described information measured are converted to light signal;
Concrete, described high potential collecting unit gathers the information measured of described power cell and described information measured is converted to light signal; Wherein, described information measured is all information that need to test described power cell, comprises input current, busbar voltage, output voltage and the carrying load ability under complete machine environment thereof etc.
S102, described low potential test cell are converted to electric signal by described light signal and described electric signal are tested.
Concrete, described low potential test cell is converted to electric signal by described light signal and described electric signal is tested.
The disclosed power cell method of testing of the present embodiment, the complete connection of described high voltage converter, can simulate its complete machine environment and detect its carrying load ability.And between described high potential collecting unit and described low potential test cell, transmit by described light signal, guaranteed the isolation of high low potential, guaranteed the security of test.Described high potential collecting unit is only connected with the described power cell of needs test simultaneously, also only need the information measured of the described power cell that gathers a needs test, after gathering the information measured of all power cells in prior art, transfer again the information wherein needing, make whole power cell test macro need data volume to be processed greatly to reduce, guaranteed real-time.
Preferably, described high potential collecting unit comprises: data collecting card and the first photoelectric conversion device; Described power cell method of testing, as shown in Figure 7, comprising:
S201, described data collecting card gather the information measured of described power cell;
Described data collecting card gathers the information measured of described power cell, and described information measured is now high potential electric signal;
Described information measured is converted to light signal by S202, described the first photoelectric conversion device;
The electric signal of described high potential is converted to light signal by described the first photoelectric conversion device, so that transfer to described low potential test cell;
S203, described low potential test cell are converted to electric signal by described light signal and described electric signal are tested.
In described high potential collecting unit, gather the information measured of described high potential electric signal by described data collecting card, and transmit after being converted to described light signal, to guarantee the isolation of high low potential, guarantee the security of test.
Preferably, described low potential test cell comprises: the second photoelectric conversion device and host computer testing apparatus; Described power cell method of testing, as shown in Figure 8, comprising:
S301, described high potential collecting unit gather the information measured of described power cell and described information measured are converted to light signal;
Described light signal is converted to electric signal by S302, described the second photoelectric conversion device;
Described the second photoelectric conversion device is converted to described light signal the electric signal of low potential, has realized the isolation of high low potential;
S303, described host computer testing apparatus are tested described electric signal;
Concrete, the analysis of described host computer testing apparatus judges that whether the information such as electric current, voltage of described power cell is normal; Described host computer testing apparatus is tested the electric signal of described low potential, has guaranteed the security of test.
Preferably, described power cell method of testing, also can as shown in Figure 9, comprise:
S401, described data collecting card gather the information measured of described power cell;
Described information measured is converted to light signal by S402, described the first photoelectric conversion device;
Described light signal is converted to electric signal by S403, described the second photoelectric conversion device;
S404, described host computer testing apparatus are tested described electric signal.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a power cell test macro, is characterized in that, is applied to the test of the power cell of high voltage converter, and described power cell comprises data-interface, and described power cell test macro comprises:
Gather the information measured of described power cell and described information measured is converted to the high potential collecting unit of light signal; The input end of described high potential collecting unit is as the input end of described power cell test macro, and the data-interface of the described power cell of testing with needs is connected;
The low potential test cell that described light signal is converted to electric signal and described electric signal is tested; The input end of described low potential test cell is connected with the output terminal of described high potential collecting unit.
2. power cell test macro according to claim 1, is characterized in that, the input end of described low potential test cell is connected with the output terminal of described high potential collecting unit by optical fiber.
3. power cell test macro according to claim 1 and 2, is characterized in that, described high potential collecting unit comprises:
Gather the data collecting card of the information measured of described power cell; The input end of described data collecting card is the input end of described high potential collecting unit;
Described information measured is converted to the first photoelectric conversion device of light signal; The input end of described the first photoelectric conversion device is connected with the output terminal of described data collecting card by netting twine;
The output terminal of described the first photoelectric conversion device is the output terminal of described high potential collecting unit.
4. power cell test macro according to claim 1 and 2, is characterized in that, described low potential test cell comprises:
Described light signal is converted to the second photoelectric conversion device of electric signal; The input end of described the second photoelectric conversion device is the input end of described low potential test cell;
The host computer testing apparatus that described electric signal is tested; The input end of described host computer testing apparatus is connected with the output terminal of described the second photoelectric conversion device by netting twine.
5. power cell test macro according to claim 3, is characterized in that, described data collecting card is distributed peripheral data capture card.
6. a power cell, is characterized in that, is applied to high voltage converter, comprising: the data-interface being connected with the input end of the arbitrary described power cell test macro of claim 1 to 5.
7. a high voltage converter, comprises multiple power cells, it is characterized in that, described at least one, power cell comprises: the data-interface being connected with the input end of the arbitrary described power cell test macro of claim 1 to 5.
8. a power cell method of testing, it is characterized in that, be applied to the power cell test macro of high voltage converter, described power cell test macro comprises the high potential collecting unit being connected with the power cell of needs test and the low potential test cell being connected with described high potential collecting unit, and described power cell method of testing comprises:
Described high potential collecting unit gathers the information measured of described power cell and described information measured is converted to light signal;
Described low potential test cell is converted to electric signal by described light signal and described electric signal is tested.
9. power cell method of testing according to claim 8, is characterized in that, described high potential collecting unit comprises: data collecting card and the first photoelectric conversion device; Described high potential collecting unit gathers the information measured of described power cell and the step that described information measured is converted to light signal is comprised:
Described data collecting card gathers the information measured of described power cell;
Described information measured is converted to light signal by described the first photoelectric conversion device.
10. power cell method of testing according to claim 8 or claim 9, is characterized in that, described low potential test cell comprises: the second photoelectric conversion device and host computer testing apparatus; Described light signal is converted to electric signal by described low potential test cell and step that described electric signal is tested comprises:
Described light signal is converted to electric signal by described the second photoelectric conversion device;
Described host computer testing apparatus is tested described electric signal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105915028A (en) * | 2016-05-12 | 2016-08-31 | 江苏力普电子科技有限公司 | Power unit tandem type high-voltage inverter on-site test method |
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Application publication date: 20140625 |