CN101281223A - Low frequency disturbance jamming immunity tester - Google Patents
Low frequency disturbance jamming immunity tester Download PDFInfo
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- CN101281223A CN101281223A CNA2008100281813A CN200810028181A CN101281223A CN 101281223 A CN101281223 A CN 101281223A CN A2008100281813 A CNA2008100281813 A CN A2008100281813A CN 200810028181 A CN200810028181 A CN 200810028181A CN 101281223 A CN101281223 A CN 101281223A
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Abstract
The invention provides a low frequency disturbance jamming immunity tester, which can conveniently regulate current waveform and can ensure the current waveform conforms to the standard waveform, thereby greatly improving testing accuracy and work efficiency. The invention contains a base wave power supply, wherein, the base wave power supply conducts in parallel a base wave high-current generator, and a variable frequency power supply which can automatically follow the phase angle of the base wave; electrical signals output from the base wave high-current generator and the variable frequency power supply which can automatically follow the base wave are communicated to a combination current generator. The base wave high-current produced by the base wave high-current generator and the harmonic current produced by the invention are overlapped according to proportion and the relative phase-angle difference, thereby the experiment used current can be conveniently obtained. The tester improves work efficiency and testing accuracy; has features of high cost performance and multipurpose.
Description
Technical field
The present invention relates to a kind of low frequency disturbance jamming immunity tester, relate in particular to a kind of device that low-voltage electrical apparatus carries out the low frequency disturbance jamming immunity test that is used for.
Background technology
In GB14048.2 " low voltage switch equipment and the opertaing device low-voltage circuit breaker " standard of the IEC 60947-2 of International Electrotechnical Commission issue and the issue of China National Quality ﹠ Technology Inspection Bureau, all to bear the low frequency disturbance jamming immunity test to the low-voltage circuit breaker that adopts the electronic type overcurrent protection.All low frequency disturbance jamming immunities all are to adopt controllable silicon, saturated core, programmable power supply to constitute for the basis at present.All will adjust this device when there is at every turn the adjustment size of current in these devices is the saturation degree of silicon controlled conduction angle, saturated core, the program of programmable power supply, these inter-related parameters, each use all will take much time and adjust, even can not access the current waveform that satisfies standard-required sometimes.
The present invention is the low frequency disturbance jamming immunity tester that the regulation of basis " GB 14048.2 low voltage switch equipments and opertaing device low-voltage circuit breaker " standard manufactures and designs, this apparatus features is can be by the requirement of standard, very easily the harmonic wave and the fundametal compoment of the current wave that produces are adjusted respectively, meanwhile obtained the peak factor (referring to accompanying drawing 1) of standard-required; This device can also provide voltage source or the current source of a first-harmonic (50Hz) to 400Hz, a tractor serves several purposes for testing laboratory.
Summary of the invention
Problem at the prior art existence, the objective of the invention is to overcome the very shortcoming of difficulty of the every technical parameter adjustment that all there is the test current waveform in the past equipment, a kind of novel low-frequency disturbance jamming immunity tester is provided, it is very convenient that this device has the current waveform of adjustment, can guarantee that current waveform satisfies reference waveform, improve the accuracy of test and the advantage of work efficiency greatly.
For achieving the above object, low frequency disturbance jamming immunity tester of the present invention is achieved by following technical proposals:
A kind of based on low frequency disturbance jamming immunity tester, include the first-harmonic power supply, the first-harmonic power supply connects can be from variable-frequency power sources and the first-harmonic strong current generator of the phase angle of motion tracking first-harmonic, thereby is communicated with the resultant current generator from the variable-frequency power sources of the phase angle of motion tracking first-harmonic with the electric signal that the first-harmonic strong current generator is exported.
Further, described can the composition by power supply, rectification circuit, the inverter that can follow the tracks of the first-harmonic phase angle, control circuit from the variable-frequency power sources of the phase angle of motion tracking first-harmonic, control circuit is connected power supply and can follows the tracks of between the inverter of first-harmonic phase angle, feedback signal control power supply with inverter, simultaneously also according to the power supply signal control inverter, the conducting of power supply process rectification circuit can be followed the tracks of the inverter of first-harmonic phase angle, and the inverter that can follow the tracks of the first-harmonic phase angle is the electric signal output after integrating;
Further, described can be from the variable-frequency power sources of the phase angle of motion tracking first-harmonic one can provide frequency from 45Hz～400Hz adjustable frequency, adjustable voltage 0～420V, can set the special variable-frequency power sources of following the tracks of a phase angle difference of first-harmonic;
Further, described first-harmonic strong current generator is a multipole voltage regulator, the first-harmonic strong current generator of adjustable output voltage scope 0～420V;
Above-mentioned resultant current generator is the synthetic generator of a low-voltage, high-current, can be from the variable-frequency power sources of the phase angle of motion tracking first-harmonic and the test current of the synthetic Pass Test requirement of the power supply step-down of first-harmonic strong current generator output.
The invention has the beneficial effects as follows, the big electric current of first-harmonic that the harmonic current of its generation and first-harmonic strong current generator produce, superpose with the relative phase angle difference in proportion, just can obtain the test electric current very easily, this examination is put and has been improved work efficiency, improve the accuracy of test, can all can the using separately from the variable-frequency power sources and the first-harmonic strong current generator of the phase angle of motion tracking first-harmonic of this device has one-machine-multi-function, characteristics that cost performance is high.
Description of drawings
The circuit block diagram of the existing test unit of Fig. 1;
The schematic block circuit diagram of Fig. 2 embodiment of the invention;
Fig. 3 embodiment of the invention can be from the schematic block circuit diagram of the variable-frequency power sources part of the phase angle of motion tracking first-harmonic;
The circuit diagram of Fig. 4 embodiment of the invention first-harmonic strong current generator part.
Embodiment
For further understanding feature of the present invention, technological means and the specific purposes that reached, function, the present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
The dependency structure that the present invention describes mainly comprises following parts (or device): first-harmonic power supply 1, can be from variable-frequency power sources 2, first-harmonic strong current generator 3, resultant current generator 4, power supply 5, rectification circuit 6, the inverter 7 that can follow the tracks of the first-harmonic phase angle, the control circuit 8 of the phase angle of motion tracking first-harmonic.
Referring to accompanying drawing 2, the present invention includes first-harmonic power supply 1,1 conducting in parallel of first-harmonic power supply can be from the variable-frequency power sources 2 and first-harmonic strong current generator 3 of the phase angle of motion tracking first-harmonic, from being communicated with resultant current generator 4 with the electric signal that first-harmonic strong current generator 3 is exported from the variable-frequency power sources 2 of the phase angle of motion tracking first-harmonic.
Can be from the variable-frequency power sources 2 of the phase angle of motion tracking first-harmonic one can provide frequency from 45Hz～400Hz adjustable frequency, adjustable voltage 0～420V, can set the special variable-frequency power sources (referring to accompanying drawing 3) of following the tracks of a phase angle difference of first-harmonic.Can form by power supply 5, rectification circuit 6, the inverter 7 that can follow the tracks of the first-harmonic phase angle, control circuit 8 from the variable-frequency power sources 2 of the phase angle of motion tracking first-harmonic, control circuit 8 is connected power supply 5 and can follows the tracks of between the inverter 7 of first-harmonic phase angle, feedback signal control power supply with inverter 7, simultaneously also according to power supply 5 signal controlling inverters 7,6 conductings of power supply 5 process rectification circuits can be followed the tracks of the inverter 7 of first-harmonic phase angle, and the inverter 7 that can follow the tracks of the first-harmonic phase angle is the electric signal output after integrating.
First-harmonic strong current generator 3 is multipole voltage regulators, the first-harmonic strong current generator of adjustable output voltage scope 0～420V (referring to accompanying drawing 4).
Resultant current generator 4 is the synthetic generators of a low-voltage, high-current, the test current that can require from the variable-frequency power sources 2 of the phase angle of motion tracking first-harmonic and the synthetic Pass Test of the power supply step-down of first-harmonic strong current generator 3 outputs.From above theory diagram as seen, this device also can use as an adjustable voltage source or the frequency conversion current source of variable ratio frequency changer voltage separately.The adjustable high-current supply of electric current that also can be used as simultaneously a 50Hz uses, and has improved testing equipment usable range and utilization factor effectively.
The present invention adopted improved can be from the variable-frequency power sources 2 of the phase angle of motion tracking first-harmonic, the big electric current of first-harmonic that the harmonic current of its generation and first-harmonic strong current generator 3 produce, superpose with the relative phase angle difference in proportion, just can obtain the test electric current very easily, and can guarantee the requirement of every technical parameter of test current waveform, improve work efficiency greatly, improved the accuracy of test.
In sum, be the present invention's preferred embodiment, the present invention makes sample and through repeatedly use test, proves really to reach its purpose of expecting and effect that practical value is unquestionable as patent specification and graphic content.
Above illustrated embodiment is only with for conveniently illustrating the present invention, be not that the present invention is done any pro forma restriction, can not with the scope of qualification the invention process, have in the technical field under any and know the knowledgeable usually, if in the scope that does not break away from technical characterictic that the present invention carries, utilize disclosed technology contents to do the local equivalent embodiment that changes or modify, and do not break away from technical characterictic content of the present invention, all still belong in the scope of the technology of the present invention feature.
Claims (5)
1, a kind of based on low frequency disturbance jamming immunity tester, include: first-harmonic power supply (1), it is characterized in that: described first-harmonic power supply (1) conducting in parallel can be from the variable-frequency power sources (2) and first-harmonic strong current generator (3) of the phase angle of motion tracking first-harmonic, from being communicated with resultant current generator (4) with the electric signal that first-harmonic strong current generator (3) is exported from the variable-frequency power sources (2) of the phase angle of motion tracking first-harmonic.
2, low frequency disturbance jamming immunity tester according to claim 1, it is characterized in that: described can the composition by power supply (5), rectification circuit (6), the inverter (7) that can follow the tracks of the first-harmonic phase angle, control circuit (8) from the variable-frequency power sources (2) of the phase angle of motion tracking first-harmonic, control circuit (8) be connected in parallel power supply (5) with can follow the tracks of the inverter (7) of first-harmonic phase angle, the conducting of power supply (5) process rectification circuit (6) can be followed the tracks of the inverter (7) of first-harmonic phase angle, and the inverter (7) that can follow the tracks of the first-harmonic phase angle is the electric signal output after integrating.
3, low frequency disturbance jamming immunity tester according to claim 1 is characterized in that: described can be from the variable-frequency power sources (2) of the phase angle of motion tracking first-harmonic one can provide frequency from 45Hz～400Hz adjustable frequency, adjustable voltage 0～420V, can set the special variable-frequency power sources of following the tracks of a phase angle difference of first-harmonic.
4, low frequency disturbance jamming immunity tester according to claim 1 is characterized in that:
Described first-harmonic strong current generator (3) is a multipole voltage regulator, the first-harmonic strong current generator of adjustable output voltage scope 0～420V.
5, low frequency disturbance jamming immunity tester according to claim 1 is characterized in that:
Described resultant current generator (4) is the synthetic generator of a low-voltage, high-current, the test current that can require from the variable-frequency power sources (2) of the phase angle of motion tracking first-harmonic and the synthetic Pass Test of the power supply step-down of first-harmonic strong current generator (3) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100281813A CN101281223A (en) | 2008-05-20 | 2008-05-20 | Low frequency disturbance jamming immunity tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100281813A CN101281223A (en) | 2008-05-20 | 2008-05-20 | Low frequency disturbance jamming immunity tester |
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| Publication Number | Publication Date |
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| CN101281223A true CN101281223A (en) | 2008-10-08 |
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| CNA2008100281813A Pending CN101281223A (en) | 2008-05-20 | 2008-05-20 | Low frequency disturbance jamming immunity tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543991A (en) * | 2017-09-19 | 2018-01-05 | 东莞市广安电气检测中心有限公司 | For low tension switch and control device harmonic wave jamming immunity tester and test method |
-
2008
- 2008-05-20 CN CNA2008100281813A patent/CN101281223A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543991A (en) * | 2017-09-19 | 2018-01-05 | 东莞市广安电气检测中心有限公司 | For low tension switch and control device harmonic wave jamming immunity tester and test method |
| CN107543991B (en) * | 2017-09-19 | 2024-05-28 | 东莞市广安电气检测中心有限公司 | Harmonic immunity test device and test method for low-voltage switch and control equipment |
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Open date: 20081008 |