CN201707360U - Long-wave-shaped impulse current generator - Google Patents
Long-wave-shaped impulse current generator Download PDFInfo
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- CN201707360U CN201707360U CN2010201316600U CN201020131660U CN201707360U CN 201707360 U CN201707360 U CN 201707360U CN 2010201316600 U CN2010201316600 U CN 2010201316600U CN 201020131660 U CN201020131660 U CN 201020131660U CN 201707360 U CN201707360 U CN 201707360U
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Abstract
The utility model relates to a long-wave-shaped impulse current generator in the technical field of impulse current detection, comprising a primary energy circuit (1), a charging capacitor group (2), a main discharging ball gap (3), a main discharging ball gap trigger circuit (4), a circuit total inductor (5), a circuit total resistor (6), a discharging switch (7) and a switch control circuit (8), wherein the primary energy circuit (1) and the charging capacitor group (2) are connected in parallel and are respectively connected with a first port of the main discharging ball gap (3) and a second main electrode of the discharging switch (7); a second port of the main discharging ball gap (3) is respectively connected with a first main electrode (a) of the discharging switch (7) and the circuit total inductor (5); the circuit total inductor (5) is connected with the circuit total resistor (6) in series and is grounded together with a second main electrode (c) of the discharging switch (7); and the switch control circuit (8) is respectively connected with the first main electrode (a), a triggering electrode (b) and the second main electrode (c) of the discharging switch (7).
Description
Technical field
The utility model relates to the device in a kind of dash current detection technique field, specifically is the long wave shape impulse current generator that a kind of impulse voltage generator cooperates the rapid discharge loop to trigger.
Background technology
The amplitude of the output current of impulse current generator and waveform depend on its electric capacity charging voltage, loop inductance and resistance, and the RLC loop can produce any waveform, as long as loop parameter meets the requirements.But in actual tests, the charging voltage of electric capacity can not surpass rated voltage, and the ability of each parts tolerating high voltage of loop, big electric current all is limited.The electric current of 10/350 μ s (long wave shape) is because the wave rear time is longer, if its amplitude is identical with 8/20 μ s (shortwave shape), energy is more a lot of greatly than 8/20 μ s ripple.Therefore produce 10/350 less μ s electric current of amplitude with common RLC loop and be fine, it but is unpractical producing 10/350 μ s heavy impulse current.
When producing the 10/350 μ s dash current of 100kA with common RLC loop, the loop is in dark overdamping state, and the all-in resistance in loop is far longer than pull-up resistor, and charging voltage needs up to ten thousand kilovolts, the energy of charging capacitor kilojoules up to ten thousand, and circuit efficiency is very low.This is not only high especially to the technical requirement of energy storage device, and the energy demand of kilojoules up to ten thousand is released on the discharge switch in the discharge process, will be very serious also to the ablation degree in ball discharge crack, and huge energy discharges the pollution that operating environment is produced electromagnetism and noise.So in the actual impulse test, if produce 10/350 μ s dash current, no matter consideration all is irrational technically or economically with common RLC loop.
The rapid discharge loop utilizes energy conversion principle to produce dash current, can reduce the designing requirement to energy storage device and ball discharge crack, helps producing high-octane 10/350 μ s dash current.The rapid discharge loop need solve two guardian techniques, and the one, the high voltage performance in rapid discharge ball crack, the 2nd, the triggering matching problem of discharge switch and major loop if can not correctly cooperate, just can not be exported needed waveform.
Find through retrieval prior art, discharge switch in I (B) the clearance type 10/350 μ s dash current system of Xi'an Communications University's research and development is to adopt three electrode switch that are operated in air or the vacuum environment, this switch has a float electrode, need adjust distance between electrodes according to different charging voltages.Because the discharge switch both end voltage is unfixed in actual tests, so the voltage of trigger pulse also will be adjusted thereupon, this has brought difficulty to impulse current test.
The utility model content
The utility model is at the prior art above shortcomings, a kind of long wave shape impulse current generator is provided, the ball stand-off distance that does not need to regulate discharge switch is from the output waveform and the amplitude of, impulse voltage generator, and trigger element can provide the trigger pulse of enough amplitudes and steepness, improved the accuracy and the reliability that trigger.
The utility model is achieved through the following technical solutions.The utility model comprises: the primary energy circuit, the charging capacitor group, main discharge ball crack, main discharge ball crack trigger circuit, the loop total inductance, the loop all-in resistance, discharge switch and ON-OFF control circuit, wherein: the primary energy circuit also is connected with first port in main discharge ball crack and second central electrode of discharge switch respectively with the charging capacitor group is in parallel, second port in main discharge ball crack is connected with the loop total inductance with first central electrode of discharge switch respectively, loop total inductance serial connection loop all-in resistance and with second central electrode of discharge switch ground connection in the lump, ON-OFF control circuit respectively with first central electrode of discharge switch, trigger electrode is connected with second central electrode.
Described primary energy circuit comprises: first controllable silicon, second controllable silicon, first resistance, second resistance, step-up transformer, the 3rd resistance and diode, wherein: first controllable silicon links to each other with the parallel connection of second controllable silicon and with an end of first resistance, the other end of first resistance is connected with the primary coil of second resistance and step-up transformer respectively, the secondary coil of step-up transformer is connected with the 3rd resistance and diode respectively, and the other end of diode is connected with main discharge ball crack with the charging capacitor group respectively.
First controllable silicon in the described primary energy circuit and second controllable silicon are used for controlling the work phasing degree of power supply, thereby reach the purpose of control commutating voltage amplitude; First resistance and second resistance are the protective resistances of transformer primary; The 3rd resistance and diode are formed commutating circuit and are carried out DC charging for main capacitance.
Described main discharge ball crack trigger circuit are a polarity and opposite polarity impulse voltage generator of main capacitance or impulse current generator.
Described ON-OFF control circuit comprises: impulse voltage generator, steep wave electric capacity, steepness ball crack, first voltage regulation resistance and second voltage regulation resistance, wherein: the output terminal of impulse voltage generator is connected with steepness ball crack with steep wave electric capacity respectively, the other end of steep wave electric capacity links to each other with second central electrode of discharge switch, the other end in steepness ball crack links to each other with the trigger electrode of discharge switch, the two ends of first voltage regulation resistance link to each other with trigger electrode with first central electrode of discharge switch respectively, and the two ends of second voltage regulation resistance link to each other with second central electrode with the trigger electrode of discharge switch respectively.
Impulse voltage generator is used for producing the potential pulse that triggers discharge switch, and steep wave electric capacity is high tension porcelain capacitance, and the auxiliary together impulse voltage generator in it and steepness ball crack produces enough steep trigger pulse.
Described discharge switch is three ball electrode gap structures, comprise: three ganoid tungsten copper balls of radius that wait are respectively as first central electrode, second central electrode and trigger electrode, wherein: trigger electrode is positioned on the vertical plane of first central electrode and second central electrode, and three electrode distance satisfies d
A-c＞d
B-c＞d
A-b, wherein: d
A-cRepresent the distance between first central electrode and second central electrode, d
B-cDistance between the expression trigger electrode and second central electrode, d
A-bRepresent the distance between first central electrode and the trigger electrode.
In the utility model, the current potential at discharge switch central electrode two ends is almost 0, and the triggering in ball crack mainly relies on the impulse voltage generator that triggers in the loop.In test three of discharge switch distance between electrodes, and the waveform of the potential pulse that impulse voltage generator produced and amplitude all need not be adjusted.That is to say,, as long as ON-OFF control circuit produces the potential pulse of enough amplitudes and steepness, just can realize reliable triggering in the later test as long as before generator comes into operation, adjust the reliable triggering distance of discharge switch.This with prior art in the ball stand-off distance that needs to adjust discharge switch according to the main capacitance charging voltage from comparing, in each test the utility model saved fully regulate rapid discharge ball crack ball apart from this process, therefore brought convenience to impulse current test.
Description of drawings
Fig. 1 is the utility model schematic diagram.
Fig. 2 is the utility model structural representation.
Embodiment
Below embodiment of the present utility model is elaborated; present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: primary energy circuit 1, charging capacitor group 2, main discharge ball crack 3, main discharge ball crack trigger circuit 4, loop total inductance 5, loop all-in resistance 6, discharge switch 7 and ON-OFF control circuit 8, wherein: primary energy circuit 1 also is connected with first port in main discharge ball crack 3 and second central electrode of discharge switch 7 respectively with 2 parallel connections of charging capacitor group, second port in main discharge ball crack 3 is connected with loop total inductance 5 with the first central electrode a of discharge switch 7 respectively, loop total inductance 5 serial connection loop all-in resistances 6 and with the second central electrode c of discharge switch 7 ground connection in the lump, ON-OFF control circuit 8 respectively with the first central electrode a of discharge switch 7, trigger electrode b is connected with the second central electrode c.
Described discharge switch 7 is three ball electrode gap structures, comprise: three ganoid tungsten copper balls of radius that wait are respectively as the first central electrode a, the second central electrode c and trigger electrode b, wherein: trigger electrode b is positioned on the vertical plane of the first central electrode a and the second central electrode c, and three electrode distance satisfies d
A-c＞d
B-c＞d
A-b, wherein: d
A-cRepresent the distance between first central electrode and second central electrode, d
B-cDistance between the expression trigger electrode and second central electrode, d
A-bRepresent the distance between first central electrode and the trigger electrode.
Described ON-OFF control circuit 8 comprises: impulse voltage generator 13, steep wave electric capacity 9, steepness ball crack 10, first voltage regulation resistance 11 and second voltage regulation resistance 12, wherein: the output terminal of impulse voltage generator 13 is connected with steepness ball crack 10 with steep wave electric capacity 9 respectively, the other end of steep wave electric capacity 9 links to each other with second central electrode of discharge switch 7, the other end in steepness ball crack 10 links to each other with the trigger electrode of discharge switch 7, the two ends of first voltage regulation resistance 11 link to each other with trigger electrode b with the first central electrode a of discharge switch 7 respectively, and the two ends of second voltage regulation resistance 12 link to each other with the second central electrode c with the trigger electrode b of discharge switch 7 respectively.
Impulse voltage generator is used for producing the potential pulse that triggers discharge switch, and steep wave electric capacity 9 is high tension porcelain capacitance, and the auxiliary together impulse voltage generator in it and steepness ball crack 10 produces enough steep trigger pulse.Voltage regulation resistance is to keep stable for the current potential between three ball cracks that make discharge switch.
As shown in Figure 2, described primary energy circuit 1 comprises: first controllable silicon SCR 1, second controllable silicon SCR 2, first resistance R 1, second resistance R 2, step-up transformer T, the 3rd resistance R 3 and diode D, wherein: first controllable silicon SCR 1 links to each other with 2 parallel connections of second controllable silicon SCR and with an end of first resistance R 1, the other end of first resistance R 1 is connected with the primary coil of second resistance R 2 and step-up transformer T respectively, the secondary coil of step-up transformer T is connected with the 3rd resistance R 3 and diode D respectively, and the other end of diode D is connected with main discharge ball crack 3 with charging capacitor group 2 respectively.
First controllable silicon SCR 1 and second controllable silicon SCR 2 in the described primary energy circuit 1 are the work phasing degree that are used for controlling power supply, thereby reach the purpose of control commutating voltage amplitude; First resistance R 1 and second resistance R 2 are protective resistances of transformer primary; T is a step-up transformer; The 3rd resistance R 3 and D form commutating circuit, for main capacitance provides DC charging voltage.
Described main discharge ball crack trigger circuit 4 are a polarity and opposite polarity impulse voltage generator of main capacitance or impulse current generator.
The AC power that SCR control is adjustable is by after the step-up transformer, through overcommutation output direct current, and then to main capacitance C charging, the work phasing degree of first controllable silicon SCR 1 and second controllable silicon SCR, 2 control AC power, thus play the effect of regulating charging voltage size and charging rate.After main capacitance charging finished, by the discharge of cue ball crack, most of energy of capacitor C was transferred on the inductance L, and the peak value of dash current is mainly by main capacitance C, inductance L, the 4th resistance R
4Decide.In case electric current is to peaking, the ball crack a-b in the discharge switch is triggered by impulse voltage generator, and at the discharge process of ball crack a-b with flow through under the voltage drop effect that the electric current of L causes, ball crack b-c triggers.After ball crack a-b and b-c were triggered, external circuit was by short circuit.The wave rear time of output waveform is by time constant L/R
4Decide.
Because the rapid discharge loop is in first peak value time trigger of main circuit current, this moment discharge switch up and down the current potential of two electrodes near 0, so whether conducting fully of whether triggered as normal conducting of the amplitude of the potential pulse that impulse voltage generator provides and the steepness decision discharge switch first central electrode a-b, the distance decision discharge switch between three balls.
Main discharge ball crack trigger circuit 4 and ON-OFF control circuit 8 with the work of MS master-slave pattern, can accurately be controlled the triggering time delay of impulse voltage generator with respect to main discharge ball crack by the photoelectricity coupling like this.
Present embodiment is different from the outstanding feature of existing 10/350 μ s waveform impulse current generator: the ball stand-off distance of discharge switch does not need to regulate from the output waveform and the amplitude of, impulse voltage generator, and trigger element can provide the trigger pulse of enough amplitudes and steepness, improved the accuracy and the reliability that trigger.
Claims (5)
1. long wave shape impulse current generator, it is characterized in that, comprise: primary energy circuit (1), charging capacitor group (2), main discharge ball crack (3), main discharge ball crack trigger circuit (4), loop total inductance (5), loop all-in resistance (6), discharge switch (7) and ON-OFF control circuit (8), wherein: primary energy circuit (1) also is connected with first port in main discharge ball crack (3) and second central electrode of discharge switch (7) respectively with charging capacitor group (2) is in parallel, second port in main discharge ball crack (3) is connected with loop total inductance (5) with first central electrode (a) of discharge switch (7) respectively, loop total inductance (5) serial connection loop all-in resistance (6) and with second central electrode (c) of discharge switch (7) ground connection in the lump, ON-OFF control circuit (8) respectively with first central electrode (a) of discharge switch (7), trigger electrode (b) is connected with second central electrode (c).
2. long wave shape impulse current generator according to claim 1, it is characterized in that, described discharge switch (7) is three ball electrode gap structures, comprise: three ganoid tungsten copper balls of radius that wait are respectively as first central electrode (a), second central electrode (c) and trigger electrode (b), wherein: trigger electrode (b) is positioned on the vertical plane of first central electrode (a) and second central electrode (c), and three electrode distance satisfies d
A-c＞d
B-c＞d
A-b, wherein: d
A-cRepresent the distance between first central electrode and second central electrode, d
B-cDistance between the expression trigger electrode and second central electrode, d
A-bRepresent the distance between first central electrode and the trigger electrode.
3. long wave shape impulse current generator according to claim 1, it is characterized in that, described ON-OFF control circuit (8) comprising: impulse voltage generator (13), steep wave electric capacity (9), steepness ball crack (10), first voltage regulation resistance (11) and second voltage regulation resistance (12), wherein: the output terminal of impulse voltage generator (13) is connected with steepness ball crack (10) with steep wave electric capacity (9) respectively, the other end of steep wave electric capacity (9) links to each other with second central electrode of discharge switch (7), the other end in steepness ball crack (10) links to each other with the trigger electrode of discharge switch (7), the two ends of first voltage regulation resistance (11) link to each other with trigger electrode (b) with first central electrode (a) of discharge switch (7) respectively, and the two ends of second voltage regulation resistance (12) link to each other with second central electrode (c) with the trigger electrode (b) of discharge switch (7) respectively.
4. long wave shape impulse current generator according to claim 1, it is characterized in that, described primary energy circuit (1) comprising: first controllable silicon (SCR1), second controllable silicon (SCR2), first resistance (R1), second resistance (R2), step-up transformer (T), the 3rd resistance (R3) and diode (D), wherein: first controllable silicon (SCR1) links to each other with second controllable silicon (SCR2) parallel connection and with an end of first resistance (R1), the other end of first resistance (R1) is connected with the primary coil of second resistance (R2) and step-up transformer (T) respectively, the secondary coil of step-up transformer (T) is connected with the 3rd resistance (R3) and diode (D) respectively, and the other end of diode (D) is connected with main discharge ball crack (3) with charging capacitor group (2) respectively.
5. long wave shape impulse current generator according to claim 1 is characterized in that, described main discharge ball crack trigger circuit (4) are a polarity and opposite polarity impulse voltage generator of main capacitance or impulse current generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201316600U CN201707360U (en) | 2010-03-16 | 2010-03-16 | Long-wave-shaped impulse current generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201316600U CN201707360U (en) | 2010-03-16 | 2010-03-16 | Long-wave-shaped impulse current generator |
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| CN201707360U true CN201707360U (en) | 2011-01-12 |
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| CN2010201316600U Expired - Fee Related CN201707360U (en) | 2010-03-16 | 2010-03-16 | Long-wave-shaped impulse current generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998645A (en) * | 2012-11-29 | 2013-03-27 | 中国电力科学研究院 | Impulse voltage standard wave source for high-voltage impulse voltage quantity value traceability and using method thereof |
| CN109342786A (en) * | 2015-09-08 | 2019-02-15 | 苏州泰思特电子科技有限公司 | For generating the waveform generator of long coda wave |
| CN112816842A (en) * | 2020-12-24 | 2021-05-18 | 深圳供电局有限公司 | Impulse voltage generator |
-
2010
- 2010-03-16 CN CN2010201316600U patent/CN201707360U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998645A (en) * | 2012-11-29 | 2013-03-27 | 中国电力科学研究院 | Impulse voltage standard wave source for high-voltage impulse voltage quantity value traceability and using method thereof |
| CN102998645B (en) * | 2012-11-29 | 2015-11-18 | 中国电力科学研究院 | Impulse voltage standard wave source for high-voltage impulse voltage quantity value traceability and using method thereof |
| CN109342786A (en) * | 2015-09-08 | 2019-02-15 | 苏州泰思特电子科技有限公司 | For generating the waveform generator of long coda wave |
| CN112816842A (en) * | 2020-12-24 | 2021-05-18 | 深圳供电局有限公司 | Impulse voltage generator |
| CN112816842B (en) * | 2020-12-24 | 2022-09-02 | 深圳供电局有限公司 | Impulse voltage generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20130316 |