CN104820119A - AC-DC hybrid high current generator - Google Patents
AC-DC hybrid high current generator Download PDFInfo
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- CN104820119A CN104820119A CN201510216571.3A CN201510216571A CN104820119A CN 104820119 A CN104820119 A CN 104820119A CN 201510216571 A CN201510216571 A CN 201510216571A CN 104820119 A CN104820119 A CN 104820119A
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Abstract
The invention discloses an AC-DC hybrid high current generator comprising an AC source circuit and a DC source circuit of which the output ends are used for being connected with an object to be tested. The AC source circuit and/or the DC source circuit comprise/comprises an LC oscillation circuit. The input end of the LC oscillation circuit is used for being connected with a DC power supply, and the output end is used for being connected with the object to be tested via an electronic switch. The AC-DC hybrid high current generator comprises the AC source circuit and the DC source circuit, wherein at least one circuit comprises the LC oscillation circuit, and the DC power supply and the electronic switch which are connected with the LC oscillation circuit. Oscillation current generated by the DC source circuit and the AC source circuit is superposed in the tested object so that AC-DC hybrid impact test current required by the tested object is formed. The high current generator is simple in structure and quite convenient to use, and can be widely applied to a high current impact test of a switch, a capacitor and other tested objects so as to detect the maximum impact current resistance capacity of the tested object.
Description
Technical field
The invention belongs to high-power electric and electronic technical field, be specifically related to the strong current generator of a kind of alternating current-direct current mixing.
Background technology
At present, the elements such as switch, isolating switch, capacitor are widely applied in electric system, and the quality of its quality directly affects the stability of electric system, therefore, needs to test these elements before dispatching from the factory or using, to verify the quality of its performance.In every test index, the tolerance of big current is extremely important one.And in the electric system of reality, if there is power line short-circuit, so can produce the short-circuit current comprising DC component in the loop, therefore the short-circuit current testing lab simulation electric system is at present generally realized by the generation of simulation high-power generator short circuit, but this mode is be difficult to realize in the factory.
Chinese Patent Application No. CN201320113931.3 disclose a kind of based on electric capacity every straight single turn alternating current-direct current synthesis strong current generator, comprise for the ac current source of output AC big current and the DC current source for exporting DC current, led to the current characteristics exchanging stopping direct current by the nonpolarity capacitance cabinet of Large Copacity, ensure that alternating current resource loop and DC current resource loop form the common branch of alternating current-direct current superposition.This generator is mainly used for the alternating current-direct current synthesis big current of primary side in the analog current mutual inductor course of work, thus current transformer is carried out to the experimental study of DC magnetic biasing or remanent magnetism, the short-circuit current comprising DC component that the big current that this generator produces and electric system produce when there is short circuit has bigger difference, therefore, the testing experiment of the elements such as switch, isolating switch, capacitor is not suitable for.
Summary of the invention
The object of this invention is to provide the strong current generator of a kind of alternating current-direct current mixing, to solve the problem of the more difficult realization of existing high-current generation device.
In order to realize above object, the technical solution adopted in the present invention is: a kind of strong current generator of alternating current-direct current mixing, it is characterized in that: comprise output terminal all for the alternating current source circuit that is connected with test product to be measured and DC source circuit, described alternating current source circuit and/or DC source circuit comprise LC oscillatory circuit, the input end of LC oscillatory circuit is used for being connected with direct supply, and its output terminal is used for being connected with test product to be measured by electronic switch.
Electronic switch on described alternating current source circuit is the switch V2 switches set formed in parallel by switch V1 and Opposite direction connection.
Electronic switch on described DC source circuit is unidirectional electron switch.
Described DC source circuit is also connected with leadage circuit.
Described leadage circuit by IGBT and bleeder resistance in series.
The input end of described LC oscillatory circuit is used for being connected with direct supply by charger.
The strong current generator of alternating current-direct current mixing of the present invention comprises alternating current source circuit and DC source circuit, a circuit is wherein had at least to comprise LC oscillatory circuit and connected direct supply and electronic switch, direct supply charges to energy-storage capacitor C in LC oscillatory circuit, when controlling electronic switch conducting, oscillatory circuit produces the interchange oscillating current needed, the concussion electric current that DC source circuit and alternating current source circuit produce mixes superposition in test product, forms the impulse test electric current of the alternating current-direct current mixing that test product needs.The structure of this strong current generator is simple, very easy to use, can be widely used in the great current impact test of the test product such as switch, electric capacity, detects the maximum impact electric current tolerance of test product.
In addition, by controlling direct current leadage circuit, direct current amplitude being reduced gradually, in oscillation circuit, produces the dc-decay electric current of needs.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the strong current generator embodiment 1 of alternating current-direct current of the present invention mixing;
Fig. 2 is the schematic diagram of strong current generator embodiment 2 of the present invention;
Fig. 3 is the schematic diagram of strong current generator embodiment 3 of the present invention;
Fig. 4 is the schematic diagram of strong current generator embodiment 4 of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Embodiment 1
Be illustrated in figure 1 the schematic diagram of the strong current generator of alternating current-direct current of the present invention mixing, as seen from the figure, it comprises output terminal all for the alternating current source circuit that is connected with test product C to be measured and DC source circuit, wherein alternating current source circuit comprises the LC oscillatory circuit be made up of concussion inductance L 1 and storage capacitor C1, the input end of LC oscillatory circuit is connected with direct supply (not shown) by 2# charger, and its output terminal is used for being connected with test product to be measured by electronic switch; Here DC source circuit is conventional DC source, repeats no more here.
In the present embodiment, the electronic switch of alternating current source circuit is the thyristor V2 electronic switch set formed in parallel by thyristor V1 and Opposite direction connection.
Direct supply is charged to energy-storage capacitor C1 by 2# charger, when test product C conducting to be measured, the electric energy that storage capacitor C1 stores, sinusoidal oscillating circuit is formed through thyristor electronic switch V1 and V2, concussion inductance L 1, test product C, in test product, form simple sinusoidal alternating current, its current amplitude is the half of the dash current amplitude needed in test product.
Embodiment 2
As shown in Figure 2, strong current generator in the present embodiment also comprises output terminal all for the alternating current source circuit that is connected with test product C to be measured and DC source circuit, the difference part of itself and embodiment 1 is that alternating current source circuit is conventional alternating current source, and DC source circuit comprises the LC oscillatory circuit be made up of concussion inductance L 2 and storage capacitor C2, the input end of LC oscillatory circuit is connected with direct supply (not shown) by 1# charger, and its output terminal is used for being connected with test product to be measured by electronic switch.
In the present embodiment, the electronic switch of DC source circuit is unidirectional thyristor electronic switch V3.
Direct supply is charged to energy-storage capacitor C2 by 1# charger, when test product conducting, storage capacitor C2 store electric energy through unidirectional thyristor electronic switch V3, concussion inductance L 2, in test product C, form unidirected discharge circuit, its current amplitude is the half of the dash current amplitude needed in test product.
Embodiment 3
As shown in Figure 3, the strong current generator of the present embodiment also comprises output terminal all for the alternating current source circuit that is connected with test product C to be measured and DC source circuit, the difference part of itself and the first two embodiment is that DC source circuit and alternating current source circuit include LC oscillatory circuit, alternating current source circuit comprises the LC oscillatory circuit be made up of concussion inductance L 1 and storage capacitor C1, and the input end of LC oscillatory circuit is connected with direct supply (not shown) by 2# charger; DC source circuit comprises the LC oscillatory circuit be made up of concussion inductance L 2 and storage capacitor C2, the input end of LC oscillatory circuit is connected with direct supply (not shown) by 1# charger, and the output terminal of DC source circuit and alternating current source circuit is all for being connected with test product to be measured by electronic switch.
Further, DC source circuit is also connected with leadage circuit, this leadage circuit is in series by IGBT and bleeder resistance R.When the IGBT conducting of test product and bleeder, energy-storage capacitor C2 mono-aspect through unidirectional thyristor electronic switch V3, concussion inductance L 2, in test product C, form unidirected discharge circuit, on the other hand, direct current bleeder starts, and direct current amplitude is reduced gradually.
Embodiment 4
As shown in Figure 4, by changing the polarity of 1# charger and 2# charger, to capacitor C1 and C2 reverse charging, change the polarity of unidirectional thyristor switch V3 simultaneously, and the polarity of IGBT in bleeder, the polarity of the dash current flow through in test product can be made to change, reversed polarity can be become from positive polarity.
Above embodiment only understands core concept of the present invention for helping; the present invention can not be limited with this; for those skilled in the art; every according to thought of the present invention; the present invention is modified or equivalent replacement; any change done in specific embodiments and applications, all should be included within protection scope of the present invention.
Claims (6)
1. the strong current generator of an alternating current-direct current mixing, it is characterized in that: comprise output terminal all for the alternating current source circuit that is connected with test product to be measured and DC source circuit, described alternating current source circuit and/or DC source circuit comprise LC oscillatory circuit, the input end of LC oscillatory circuit is used for being connected with direct supply, and its output terminal is used for being connected with test product to be measured by electronic switch.
2. the strong current generator of alternating current-direct current mixing according to claim 1, is characterized in that: the electronic switch on described alternating current source circuit is the switch V2 switches set formed in parallel by switch V1 and Opposite direction connection.
3. the strong current generator of alternating current-direct current mixing according to claim 1 and 2, is characterized in that: the electronic switch on described DC source circuit is unidirectional electron switch.
4. the strong current generator of alternating current-direct current mixing according to claim 1, is characterized in that: described DC source circuit is also connected with leadage circuit.
5. the strong current generator of alternating current-direct current according to claim 4 mixing, is characterized in that: described leadage circuit by IGBT and bleeder resistance in series.
6. the strong current generator of alternating current-direct current mixing according to claim 1, is characterized in that: the input end of described LC oscillatory circuit is used for being connected with direct supply by charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510216571.3A CN104820119A (en) | 2015-04-30 | 2015-04-30 | AC-DC hybrid high current generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510216571.3A CN104820119A (en) | 2015-04-30 | 2015-04-30 | AC-DC hybrid high current generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527518A (en) * | 2016-03-09 | 2016-04-27 | 丰宾电子（深圳）有限公司 | Aluminum electrolytic capacitor life tester |
| CN106855601A (en) * | 2017-01-16 | 2017-06-16 | 广西吉光电子科技有限公司 | It is a kind of for test capacitors implosion or the test circuit of short circuit |
| CN108008173A (en) * | 2016-10-28 | 2018-05-08 | 致茂电子股份有限公司 | Alternating current-direct current is superimposed test device |
| CN111478330A (en) * | 2020-04-08 | 2020-07-31 | 广东安朴电力技术有限公司 | Method for generating alternating current-direct current mixed wave |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129034A (en) * | 2011-02-11 | 2011-07-20 | 中国电力科学研究院 | Fault current operation test method of flexible DC (Direct Current) transmission MMC (Modular Multilevel Converter) valve |
| CN202066942U (en) * | 2011-02-11 | 2011-12-07 | 中国电力科学研究院 | Fault current operation test device for flexible direct current power transmission MMC (modular multi-level converter) valve |
| CN102692542A (en) * | 2012-05-04 | 2012-09-26 | 中电普瑞电力工程有限公司 | Trigger method of auxiliary valve in a short circuit current test apparatus |
| CN103066551A (en) * | 2012-12-13 | 2013-04-24 | 国网智能电网研究院 | Fault protective system for short-circuit current testing apparatus |
| CN103837827A (en) * | 2014-03-22 | 2014-06-04 | 中国科学院电工研究所 | Fault operation test device of flexible direct current transmission valve |
-
2015
- 2015-04-30 CN CN201510216571.3A patent/CN104820119A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129034A (en) * | 2011-02-11 | 2011-07-20 | 中国电力科学研究院 | Fault current operation test method of flexible DC (Direct Current) transmission MMC (Modular Multilevel Converter) valve |
| CN202066942U (en) * | 2011-02-11 | 2011-12-07 | 中国电力科学研究院 | Fault current operation test device for flexible direct current power transmission MMC (modular multi-level converter) valve |
| CN102692542A (en) * | 2012-05-04 | 2012-09-26 | 中电普瑞电力工程有限公司 | Trigger method of auxiliary valve in a short circuit current test apparatus |
| CN103066551A (en) * | 2012-12-13 | 2013-04-24 | 国网智能电网研究院 | Fault protective system for short-circuit current testing apparatus |
| CN103837827A (en) * | 2014-03-22 | 2014-06-04 | 中国科学院电工研究所 | Fault operation test device of flexible direct current transmission valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527518A (en) * | 2016-03-09 | 2016-04-27 | 丰宾电子（深圳）有限公司 | Aluminum electrolytic capacitor life tester |
| CN108008173A (en) * | 2016-10-28 | 2018-05-08 | 致茂电子股份有限公司 | Alternating current-direct current is superimposed test device |
| CN108008173B (en) * | 2016-10-28 | 2020-02-18 | 致茂电子股份有限公司 | Alternating current-direct current superposition testing device |
| CN106855601A (en) * | 2017-01-16 | 2017-06-16 | 广西吉光电子科技有限公司 | It is a kind of for test capacitors implosion or the test circuit of short circuit |
| CN111478330A (en) * | 2020-04-08 | 2020-07-31 | 广东安朴电力技术有限公司 | Method for generating alternating current-direct current mixed wave |
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Application publication date: 20150805 |
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