CN103454463A - Gapless lightning impulse current generator - Google Patents
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- CN103454463A CN103454463A CN2013103990422A CN201310399042A CN103454463A CN 103454463 A CN103454463 A CN 103454463A CN 2013103990422 A CN2013103990422 A CN 2013103990422A CN 201310399042 A CN201310399042 A CN 201310399042A CN 103454463 A CN103454463 A CN 103454463A
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Abstract
The invention relates to a lightning impulse current generator, in particular to a gapless lightning impulse current generator. The gapless lightning impulse current generator comprises a main side and a power supplying transformer T connected with a charging source, wherein one end of an auxiliary side of the power supplying transformer T is grounded, the other end of the auxiliary side of the power supplying transformer T is connected with a collector electrode of an insulated gate bipolar transistor VT0, an emitting electrode of the insulated gate bipolar transistor VT0 is sequentially connected with a rectifier DZ and a charging resistor R in series and then is connected to a collector electrode of an insulated gate bipolar transistor VT, the collector electrode of the insulated gate bipolar transistor VT is connected to a positive electrode of a charging capacitor C, a negative electrode of the charging electrode C is grounded, an emitting electrode of the insulated gate bipolar transistor VT is connected to one end of a high-voltage testing object ZX, the other end of the high-voltage testing object ZX is grounded, and both a grid electrode G0 of the insulated gate bipolar transistor VT0 and a grid electrode G of the insulated gate bipolar transistor VT are connected to a driving circuit. The gapless lightning impulse current generator has the advantages of being free from error action, easy to operate, high in work frequency, small in power of the driving circuit and the like.
Description
Technical field
The present invention relates to a kind of lightning impulse current generating means, be specifically related to a kind of gapless lightning impulse current generator.
Background technology
Along with the development of super UHV Transmission Engineering, the lightning impulse current generator has become one of visual plant of each high-voltage test chamber, utilizes the lightning impulse current generator to carry out the lightning impulse current test to high-tension apparatus.Impulse current waveform must be accurately in test, the too high easy damage equipment of dash current amplitude, the too low test objective that do not reach of dash current amplitude.
As shown in Figure 1, the dependence of traditional lightning impulse current generator loop punctures air and comes the mode efficiency of conduction current low, and poor anti jamming capability is controlled difficulty large, the malfunction of air balls gap or tripping situation often occur.Ball-gap discharge has dispersiveness, affected by atmospheric conditions, dust, sphere state etc., therefore with switching device, replace the ball discharge gap, can improve the serviceability of lightning impulse current generator, realize the control of flexible and convenient, be significant in a lot of tests.
Summary of the invention
The object of the present invention is to provide a kind of gapless lightning impulse current generator, solve existing generating means and exist efficiency low, poor anti jamming capability, control difficulty large, the problem of the malfunction of air balls gap or tripping often occurs.
For solving above-mentioned technical matters, the present invention by the following technical solutions:
Scheme one: a kind of gapless lightning impulse current generator, comprise the supply transformer T that main limit is connected with charge power supply, the secondary one end ground connection of supply transformer T, the other end connects the collector of insulated gate bipolar transistor VT0, the emitter connection of insulated gate bipolar transistor VT0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the collector of insulated gate bipolar transistor VT, the collector of insulated gate bipolar transistor VT is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the emitter of described insulated gate bipolar transistor VT is connected to the end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said insulated gate bipolar transistor VT0 and the grid G of insulated gate bipolar transistor VT all are connected to driving circuit.
Further technical scheme is, described charging resistor R, insulated gate bipolar transistor VT and charging capacitor C are interconnected to constitute and discharge and recharge the generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge the generation group, every group of charging resistor R(1 discharged and recharged in the generation group ... n) all be connected to rectifier D, insulated gate bipolar transistor VT(1 ... n) emitter all is connected to the end of high pressure test product ZX, insulated gate bipolar transistor VT(1 ... n) grid G (1 ... n) all be connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
Technical scheme further, described driving circuit mainly connects the photoelectric coupling loop by single-chip microcomputer and forms, be provided with the equal hydraulic circuit of grid between the grid of described insulated gate bipolar transistor VT and emitter, be provided with static state voltage equipoise loop and dynamic voltage balancing loop between the collector and emitter of described insulated gate bipolar transistor VT.
Technical scheme further, the equal hydraulic circuit of described grid mainly consists of mutual serial connection Zener diode DQ and direction diode DF, wherein the negative pole of Zener diode DQ is connected to the emitter of insulated gate bipolar transistor VT, and the negative pole of direction diode DF is connected to the grid of insulated gate bipolar transistor VT.
Technical scheme further, described static state voltage equipoise loop mainly consists of the resistance R T between the collector and emitter that is connected to insulated gate bipolar transistor VT; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, wherein the positive pole of diode DS is connected to the collector of insulated gate bipolar transistor VT, and the end of described capacitor C S is connected to the emitter of insulated gate bipolar transistor VT.
Insulated gate bipolar transistor abbreviation IGBT (Insulated Gate Bipolar Transistor), the compound full-control type voltage driven type power semiconductor device be comprised of BJT (double pole triode) and MOS (insulating gate type field effect tube), have the advantage of low conduction voltage drop two aspects of the high input impedance of MOSFET and GTR concurrently.The GTR saturation pressure reduces, and current carrying density is large, but drive current is larger; The MOSFET driving power is very little, and switching speed is fast, but conduction voltage drop is large, and current carrying density is little.IGBT combines the advantage of above two kinds of devices, and the little and saturation pressure of driving power reduces.Be applicable to very much being applied to DC voltage and be 600V and above converter system as fields such as alternating current generator, frequency converter, Switching Power Supply, lighting circuit, Traction Drives.
Scheme two: a kind of gapless lightning impulse current generator, comprise the supply transformer T that main limit is connected with charge power supply, the secondary one end ground connection of supply transformer T and the input end of controllable silicon D0, the output terminal of controllable silicon D0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the positive pole of controllable silicon D, the positive pole of controllable silicon D also is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the negative pole of described controllable silicon D is connected to the end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said controllable silicon D0 and the grid G of controllable silicon D all are connected to driving circuit.
Further technical scheme is, described charging resistor R, controllable silicon D and charging capacitor C are interconnected to constitute and discharge and recharge the generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge the generation group, every group of charging resistor R(1 discharged and recharged in the generation group ... n) all be connected to rectifier D, controllable silicon D(1 ... n) negative pole all is connected to the end of high pressure test product ZX, controllable silicon D(1 ... n) grid G (1 ... n) all be connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
Further technical scheme is, described driving circuit mainly connects the photoelectric coupling loop by single-chip microcomputer and forms, be provided with the equal hydraulic circuit of grid between the grid of described controllable silicon D and negative pole, be provided with static state voltage equipoise loop and dynamic voltage balancing loop between the positive pole of described controllable silicon D and negative pole.
Further technical scheme is, the equal hydraulic circuit of described grid mainly consists of mutual serial connection Zener diode DQ and direction diode DF, wherein the negative pole of Zener diode DQ is connected to the negative pole of controllable silicon D, and the negative pole of direction diode DF is connected to the grid of controllable silicon D.
Further technical scheme is, described static state voltage equipoise loop mainly consists of the resistance R T between the positive pole that is connected to controllable silicon D and negative pole; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, and wherein the positive pole of diode DS is connected to the negative pole of controllable silicon D, and the end of described capacitor C S is connected to the positive pole of controllable silicon D.
Compared with prior art, the invention has the beneficial effects as follows: the invention solves the difficult control of conventional impact current feedback circuit discharge current waveform, high energy consumption, low-repetition-frequency and the short defect of switch life, advantages such as having without malfunction, easily control, frequency of operation is high, drive circuit power is little, can be applicable to the high-potting of modern super extra-high voltage equipment.
The accompanying drawing explanation
Fig. 1 is existing lightning impulse current generator circuit connection layout.
Fig. 2 is the circuit connection diagram that a kind of gapless lightning impulse current of the present invention generator uses insulated gate bipolar transistor.
Fig. 3 is the circuit connection diagram that a kind of gapless lightning impulse current of the present invention generator uses a preferred embodiment of insulated gate bipolar transistor.
Fig. 4 is that a kind of gapless lightning impulse current of the present invention generator uses the silicon controlled circuit connection diagram.
A kind of gapless lightning impulse current of Fig. 5 the present invention generator uses the circuit connection diagram of a preferred embodiment of controllable silicon.
The driving circuit connection layout that Fig. 6 is a preferred embodiment of a kind of gapless lightning impulse current generator of the present invention shown in Fig. 3 or Fig. 5.
Fig. 7 is equalizer circuit connection layout in preferred embodiment of a kind of gapless lightning impulse current of the present invention shown in Fig. 3 generator.
Fig. 8 is equalizer circuit connection layout in preferred embodiment of a kind of gapless lightning impulse current of the present invention shown in Fig. 5 generator.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of embodiment of gapless lightning impulse current generator according to the present invention: a kind of gapless lightning impulse current generator, comprise the supply transformer T that main limit is connected with charge power supply, the secondary one end ground connection of supply transformer T, the other end connects the collector of insulated gate bipolar transistor VT0, the emitter connection of insulated gate bipolar transistor VT0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the collector of insulated gate bipolar transistor VT, the collector of insulated gate bipolar transistor VT is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the emitter of described insulated gate bipolar transistor VT is connected to the end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said insulated gate bipolar transistor VT0 and the grid G of insulated gate bipolar transistor VT all are connected to driving circuit.
Fig. 2 shows a preferred embodiment of a kind of gapless lightning impulse current of the present invention generator, described charging resistor R, insulated gate bipolar transistor VT and charging capacitor C are interconnected to constitute and discharge and recharge the generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge the generation group, every group of charging resistor R(1 discharged and recharged in the generation group ... n) all be connected to rectifier D, insulated gate bipolar transistor VT(1 ... n) emitter all is connected to the end of high pressure test product ZX, insulated gate bipolar transistor VT(1 ... n) grid G (1 ... n) all be connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
Fig. 3, Fig. 6 and Fig. 7 show another preferred embodiment of a kind of gapless lightning impulse current of the present invention generator, described driving circuit mainly connects the photoelectric coupling loop by single-chip microcomputer and forms, be provided with the equal hydraulic circuit of grid between the grid of described insulated gate bipolar transistor VT and emitter, be provided with static state voltage equipoise loop and dynamic voltage balancing loop between the collector and emitter of described insulated gate bipolar transistor VT.
Another preferred embodiment of a kind of gapless lightning impulse current generator according to the present invention, the equal hydraulic circuit of described grid mainly consists of mutual serial connection Zener diode DQ and direction diode DF, wherein the negative pole of Zener diode DQ is connected to the emitter of insulated gate bipolar transistor VT, and the negative pole of direction diode DF is connected to the grid of insulated gate bipolar transistor VT.Can utilize the effect of Zener diode clamper to be controlled the voltage of insulated gate bipolar transistor VT.
The principle of the equal hydraulic circuit of grid is: when the voltage of insulated gate bipolar transistor VT, during lower than the clamp voltage of Zener diode DQ, control circuit is failure to actuate; Once the voltage of insulated gate bipolar transistor VT is higher than Zener diode DQ voltage, Zener diode DQ is breakdown, and extra voltage will be added to grid, makes insulated gate bipolar transistor VT be tending towards conducting, thereby reduces terminal voltage.
Another preferred embodiment of a kind of gapless lightning impulse current generator according to the present invention, described static state voltage equipoise loop mainly consists of the resistance R T between the collector and emitter that is connected to insulated gate bipolar transistor VT; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, wherein the positive pole of diode DS is connected to the collector of insulated gate bipolar transistor VT, and the end of described capacitor C S is connected to the emitter of insulated gate bipolar transistor VT.
The quiescent voltage equilibrium can be realized by each device two ends equalizing resistance in parallel in the static state voltage equipoise loop.At the resistance R T of collector certain resistance in parallel with the emitter two ends, when two IGBT series connection, the RT value is that IGBT turn-offs resistance value R
off.
Computing formula:
the FZ400R65KE3 type IGBT of Germany company of Infineon (infineon) issue in June, V
cES=6500V, leakage current (cut-off current) I
cES=5mA, get V
cES=5000V, obtain R
off=1M Ω (consider and bear voltage difference in 10% between series IGBT, can not choose too much, otherwise reach, all do not press purpose by static voltage sharing; Resistance is too little can be produced than lossy.Generally get IGBT and close 1/10th of resistance break,
parallel resistance RT=100k Ω).
The principle of work in dynamic voltage balancing loop is: when indivedual IGBT shorting advances or while turn-offing in advance, certainly lead to peak voltage, DS shunt capacitance CS is passed through at two ends at IGBT, peak voltage must first be charged to CS, the ascending velocity of the peak voltage at IGBT two ends is subject to the restriction of CS like this, and can, by the CS dividing potential drop that is connected in parallel on each IGBT two ends, by CS, realize the equilibrium to dynamic peak voltage.In IGBT conduction period, due to the unilateal conduction characteristic of DS, CS bleeds off the electric charge of storage by RS, IGBT, in order to absorb the surge voltage produced when IGBT turn-offs next time.So the RCD buffer circuit in present technique not only plays stepless action, can also do excess voltage protection.
Course of work when a kind of gapless lightning impulse current of the present invention generator uses insulated gate bipolar transistor VT:
1, charging process, it is open-minded that single-chip microcomputer sends signal controlling VT0, and VT1～VTn turn-offs, and supply transformer T,, impacts condenser voltage and equals the charge power supply commutating voltage after charging n impact capacitor C charged in parallel by rectifier D.
2, discharge process, single-chip microcomputer sends signal and turn-offs VT0, opens VT1～VTn, and n impact capacitor C produces dash current to output terminal simultaneously.
It is worthy of note: in Fig. 2, Fig. 3, Fig. 7 and above-described embodiment, VT0-VTn and VT describe and add in order to distinguish and to facilitate, all refer to insulated gate bipolar transistor (IGBT), the good C1-Cn of charging resistor R and R1-Rn, grid G and G1-Gn and charging capacitor C all in like manner.
A kind of embodiment of gapless lightning impulse current generator according to the present invention: a kind of gapless lightning impulse current generator, comprise the supply transformer T that main limit is connected with charge power supply, the secondary one end ground connection of supply transformer T and the input end of controllable silicon D0, the output terminal of controllable silicon D0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the positive pole of controllable silicon D, the positive pole of controllable silicon D also is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the negative pole of described controllable silicon D is connected to the end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said controllable silicon D0 and the grid G of controllable silicon D all are connected to driving circuit.
Fig. 4 shows a preferred embodiment of a kind of gapless lightning impulse current of the present invention generator, described charging resistor R, controllable silicon D and charging capacitor C are interconnected to constitute and discharge and recharge the generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge the generation group, every group of charging resistor R(1 discharged and recharged in the generation group ... n) all be connected to rectifier D, controllable silicon D(1 ... n) negative pole all is connected to the end of high pressure test product ZX, controllable silicon D(1 ... n) grid G (1 ... n) all be connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
Fig. 5, Fig. 6 and Fig. 8 show another preferred embodiment of a kind of gapless lightning impulse current of the present invention generator, described driving circuit mainly connects the photoelectric coupling loop by single-chip microcomputer and forms, be provided with the equal hydraulic circuit of grid between the grid of described controllable silicon D and negative pole, be provided with static state voltage equipoise loop and dynamic voltage balancing loop between the positive pole of described controllable silicon D and negative pole.
Another preferred embodiment of a kind of gapless lightning impulse current generator according to the present invention, the equal hydraulic circuit of described grid mainly consists of mutual serial connection Zener diode DQ and direction diode DF, wherein the negative pole of Zener diode DQ is connected to the negative pole of controllable silicon D, and the negative pole of direction diode DF is connected to the grid of controllable silicon D.Can utilize the effect of Zener diode DQ clamper to be controlled the voltage of controllable silicon D.
The principle of the equal hydraulic circuit of grid is: when the voltage of controllable silicon D, during lower than the clamp voltage of Zener diode DQ, control circuit is failure to actuate; Once the voltage of controllable silicon D is higher than zener diode voltage DQ, Zener diode DQ is breakdown, and extra voltage will be added to grid, makes controllable silicon D be tending towards conducting, thereby reduces terminal voltage.
Another preferred embodiment of a kind of gapless lightning impulse current generator according to the present invention, described static state voltage equipoise loop mainly consists of the resistance R T between the positive pole that is connected to controllable silicon D and negative pole; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, and wherein the positive pole of diode DS is connected to the negative pole of controllable silicon D, and the end of described capacitor C S is connected to the positive pole of controllable silicon D.
The quiescent voltage equilibrium can be realized by each device two ends equalizing resistance in parallel in the static state voltage equipoise loop.At resistance R T anodal and negative pole two ends certain resistance in parallel, when two controllable silicon D series connection, the RT value is that controllable silicon D turn-offs resistance value R
off.
Computing formula:
v
cES=6500V, leakage current (cut-off current) I
cES=5mA, get V
cES=5000V, obtain R
off=1M Ω (consider and bear voltage difference in 10% between serial connection controllable silicon D, can not choose too much, otherwise reach, all do not press purpose by static voltage sharing; Resistance is too little can be produced than lossy.Generally get controllable silicon D and close 1/10th of resistance break,
parallel resistance RT=100k Ω).
The principle of work in dynamic voltage balancing loop is: when indivedual controllable silicon D shorting advances or while turn-offing in advance, certainly lead to peak voltage, DS shunt capacitance CS is passed through at two ends at controllable silicon D, peak voltage must first be charged to CS, the ascending velocity of the peak voltage at controllable silicon D two ends is subject to the restriction of CS like this, and can, by the CS dividing potential drop that is connected in parallel on each controllable silicon D two ends, by CS, realize the equilibrium to dynamic peak voltage.In controllable silicon D conduction period, due to the unilateal conduction characteristic of DS, CS bleeds off the electric charge of storage by RS, controllable silicon D, in order to absorb the surge voltage produced when controllable silicon D turn-offs next time.So the RCD buffer circuit in present technique not only plays stepless action, can also do excess voltage protection.
A kind of gapless lightning impulse current of the present invention generator uses the course of work of controllable silicon D:
1, charging process, it is open-minded that single-chip microcomputer sends signal controlling D0, and D1～Dn turn-offs, and supply transformer T,, impacts condenser voltage and equals the charge power supply commutating voltage after charging n impact capacitor C charged in parallel by rectifier DZ.
2, discharge process, single-chip microcomputer sends signal and turn-offs D0, opens D1～Dn, and n impact capacitor C produces dash current to output terminal simultaneously.
It is worthy of note: in Fig. 4, Fig. 5, Fig. 8 and above-described embodiment, D and D1-Dn describe and add in order to distinguish and to facilitate, and all refer to controllable silicon D, and the good C1-Cn of charging resistor R and R1-Rn, grid G and G1-Gn and charging capacitor C all in like manner.
The present invention has designed multiple voltage equalizing protection measure and Drive and Control Circuit, to guarantee switching device shifter, brings into play the good effect of cut-offfing in charging and discharging circuit.Progress along with Power Electronic Technique, the IGBT of higher voltage withstand class or controllable silicon will come into operation, be expected to replace IGBT or silicon controlled connection in series-parallel to use, the series of problems that IGBT or controllable silicon in serial connection cause has not when the time comes existed yet, circuit also will be simplified more, and this mode will be used in a large number.
Characteristics of the present invention: (1) gapless, adopted automatic controlled high pressure high pass capacity switch, can be rapidly under the triggering of pulse signal, action exactly, reduced the volume of whole device, improve space availability ratio.(2) eliminate the electromagnetic noise brought when the igniting of air balls gap punctures, avoid the electromagnetic pollution to human body and environment.
Claims (10)
1. a gapless lightning impulse current generator, it is characterized in that: comprise the supply transformer T that main limit is connected with charge power supply, the secondary one end ground connection of supply transformer T, the other end connects the collector of insulated gate bipolar transistor VT0, the emitter connection of insulated gate bipolar transistor VT0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the collector of insulated gate bipolar transistor VT, the collector of insulated gate bipolar transistor VT is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the emitter of described insulated gate bipolar transistor VT is connected to the end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said insulated gate bipolar transistor VT0 and the grid G of insulated gate bipolar transistor VT all are connected to driving circuit.
2. a kind of gapless lightning impulse current generator according to claim 1, it is characterized in that: described charging resistor R, insulated gate bipolar transistor VT and charging capacitor C are interconnected to constitute and discharge and recharge the generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge the generation group, every group of charging resistor R(1 discharged and recharged in the generation group ... n) all be connected to rectifier D, insulated gate bipolar transistor VT(1 ... n) emitter all is connected to the end of high pressure test product ZX, insulated gate bipolar transistor VT(1 ... n) grid G (1 ... n) all be connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
3. a kind of gapless lightning impulse current generator according to claim 1 and 2, it is characterized in that: described driving circuit mainly connects the photoelectric coupling loop by single-chip microcomputer and forms, be provided with the equal hydraulic circuit of grid between the grid of described insulated gate bipolar transistor VT and emitter, be provided with static state voltage equipoise loop and dynamic voltage balancing loop between the collector and emitter of described insulated gate bipolar transistor VT.
4. a kind of gapless lightning impulse current generator according to claim 3, it is characterized in that: the equal hydraulic circuit of described grid mainly consists of mutual serial connection Zener diode DQ and direction diode DF, wherein the negative pole of Zener diode DQ is connected to the emitter of insulated gate bipolar transistor VT, and the negative pole of direction diode DF is connected to the grid of insulated gate bipolar transistor VT.
5. a kind of gapless lightning impulse current generator according to claim 3, it is characterized in that: described static state voltage equipoise loop mainly consists of the resistance R T between the collector and emitter that is connected to insulated gate bipolar transistor VT; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, wherein the positive pole of diode DS is connected to the collector of insulated gate bipolar transistor VT, and the end of described capacitor C S is connected to the emitter of insulated gate bipolar transistor VT.
6. a gapless lightning impulse current generator, it is characterized in that: comprise the supply transformer T that main limit is connected with charge power supply, the secondary one end ground connection of supply transformer T and the input end of controllable silicon D0, the output terminal of controllable silicon D0 is connected in series rectifier DZ and charging resistor R successively, be connected to again the positive pole of controllable silicon D, the positive pole of controllable silicon D also is connected to the positive pole of charging capacitor C, the minus earth of charging capacitor C, the negative pole of described controllable silicon D is connected to the end of high pressure test product ZX, the other end ground connection of high pressure test product ZX, the grid G 0 of wherein said controllable silicon D0 and the grid G of controllable silicon D all are connected to driving circuit.
7. a kind of gapless lightning impulse current generator according to claim 6, it is characterized in that: described charging resistor R, controllable silicon D and charging capacitor C are interconnected to constitute and discharge and recharge the generation group, this gapless lightning impulse current generator comprises that at least two groups discharge and recharge the generation group, every group of charging resistor R(1 discharged and recharged in the generation group ... n) all be connected to rectifier D, controllable silicon D(1 ... n) negative pole all is connected to the end of high pressure test product ZX, controllable silicon D(1 ... n) grid G (1 ... n) all be connected to driving circuit, charging capacitor C(1 ... n) the equal ground connection of negative pole.
8. according to the described a kind of gapless lightning impulse current generator of claim 6 or 7, it is characterized in that: described driving circuit mainly connects the photoelectric coupling loop by single-chip microcomputer and forms, be provided with the equal hydraulic circuit of grid between the grid of described controllable silicon D and negative pole, be provided with static state voltage equipoise loop and dynamic voltage balancing loop between the positive pole of described controllable silicon D and negative pole.
9. a kind of gapless lightning impulse current generator according to claim 8, it is characterized in that: the equal hydraulic circuit of described grid mainly consists of mutual serial connection Zener diode DQ and direction diode DF, wherein the negative pole of Zener diode DQ is connected to the negative pole of controllable silicon D, and the negative pole of direction diode DF is connected to the grid of controllable silicon D.
10. a kind of gapless lightning impulse current generator according to claim 8, it is characterized in that: described static state voltage equipoise loop mainly consists of the resistance R T between the positive pole that is connected to controllable silicon D and negative pole; Described dynamic voltage balancing loop mainly consists of with serial connection capacitor C S resistance R S and diode DS parallel connection, and wherein the positive pole of diode DS is connected to the negative pole of controllable silicon D, and the end of described capacitor C S is connected to the positive pole of controllable silicon D.
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| CN107105368A (en) * | 2017-06-07 | 2017-08-29 | 上海乐野网络科技有限公司 | A kind of words that reduce put the circuit that input bottom is made an uproar |
| CN108196100A (en) * | 2018-03-06 | 2018-06-22 | 北京华天机电研究所有限公司 | The multiple counterattack wave impact current feedback circuit realized using vacuum switch |
| CN108839820A (en) * | 2018-07-12 | 2018-11-20 | 苏州峰极电磁科技有限公司 | The experimental rig of vehicular thunder and lightning direct effect |
| CN115549651A (en) * | 2022-11-26 | 2022-12-30 | 昆明理工大学 | Impulse current generator for simulating multiple lightning strokes |
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| CN107105368A (en) * | 2017-06-07 | 2017-08-29 | 上海乐野网络科技有限公司 | A kind of words that reduce put the circuit that input bottom is made an uproar |
| CN108196100A (en) * | 2018-03-06 | 2018-06-22 | 北京华天机电研究所有限公司 | The multiple counterattack wave impact current feedback circuit realized using vacuum switch |
| CN108839820A (en) * | 2018-07-12 | 2018-11-20 | 苏州峰极电磁科技有限公司 | The experimental rig of vehicular thunder and lightning direct effect |
| CN115549651A (en) * | 2022-11-26 | 2022-12-30 | 昆明理工大学 | Impulse current generator for simulating multiple lightning strokes |
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