CN102136831B - High-voltage repetition-frequency pulse generator - Google Patents
High-voltage repetition-frequency pulse generator Download PDFInfo
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- CN102136831B CN102136831B CN 201110007761 CN201110007761A CN102136831B CN 102136831 B CN102136831 B CN 102136831B CN 201110007761 CN201110007761 CN 201110007761 CN 201110007761 A CN201110007761 A CN 201110007761A CN 102136831 B CN102136831 B CN 102136831B
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Abstract
The invention relates to a high-voltage repetition-frequency pulse generator which comprises a high-voltage power supply, a charging resistor, an energy storage capacitor, an output cable, a switch, a ground resistor, a ground connecting plate and an insulating support; and the high-voltage repetition-frequency pulse generator is characterized in that a hydrogen thyratron is adopted as the switch; backflow tubes are arranged on the exposed parts of the hydrogen thyratron, the energy storage capacitor and the output cable; the high-voltage end of the energy storage capacitor is directly connected with the switch of the hydrogen thyratron; the low-voltage end of the energy storage capacitor penetrates the insulating support by utilizing a screw and then is connected with the ground resistor through the ground connecting plate; and the other end of the ground resistor is connected with the ground potential. The high-voltage repetition-frequency pulse generator is mainly characterized by fast rise time (25ns), high amplitude (50kv), low jitter (3ns), capability of running stably at a repeated frequency, high front edge steep and amplitude of the output pulse, capability of being used for pre-stage triggering of a pulse power source, and capability of being used as a fast pulse source experimental platform for research on insulating characteristic of materials.
Description
Technical field
The present invention relates to a kind of high-voltage repetition-frequency pulse generator, main feature is fast forward position (25ns), high amplitude (50kV), low jitter (3ns).
Background technology
Repetitive operation is one of important directions of Pulse Power Techniques development, all requires the pulse power device to have certain repetition ability to work such as pumping excimer laser, High-Power Microwave and the following inertial confinement fusion energy etc.The high voltage pulse generator plays trigger role as the triggering system of pulse power device for device, acts on important.The major parameter of high voltage pulse generator comprises time delay and the shake thereof of the amplitude of exporting pulse, climbing speed, output pulse, comprises in addition the Stability and dependability of high voltage pulse generator etc.Generally the amplitude of high voltage pulse is higher, climbing speed is faster, and the performance of devices that is triggered is more stable.At present, the high voltage pulse generator usually by high-voltage power supply, storage capacitor, set up switch, output cable, charging unit, put earth resistance etc. and form.When setting up switch and select gas switch, the high voltage pulse generator is generally single work, and the parameter of output electric pulse is unstable, shakes larger; When setting up switch and select the semiconductor device such as field effect transistor, controllable silicon, although the high voltage pulse generator can be with higher frequency work, the amplitude of output electric pulse is lower, usually only has several kV, and drives the limited in one's ability of load.Common high voltage pulse generator is difficult to the electric pulse of the high amplitude of output, fast forward position, low jitter under the repetition rate condition.
Summary of the invention
In order to overcome existing high voltage pulse generator in the deficiency aspect the output parameter, the invention provides a kind of repetition high voltage pulse generator based on hydrogen thyratron, this high voltage pulse generator can be stable repetitive operation, and the forward position of output pulse is steep, amplitude is high, the prime that can be used as pulse power supply triggers, and can be used as fast pulse source experiment porch for the insulated with material characteristic research.
High-voltage repetition-frequency pulse generator of the present invention, comprise high voltage source, charging resistor, storage capacitor, output cable, switch, put earth resistance, put ground connecting plate, insulating supporting, it is characterized in that switch is hydrogen thyratron, exposed part at hydrogen thyratron, storage capacitor and output cable is provided with the cylinder that refluxes, the high-pressure side of storage capacitor directly links to each other with the hydrogen thyratron switch, the low-pressure end of storage capacitor utilizes screw to pass behind the insulating supporting by putting the ground connecting plate and putting earth resistance and link to each other again, and the other end of putting earth resistance is connected to earth potential.
It is the coaxial cable of 50-80 ohm that above-mentioned output cable is selected impedance, and preferred value is 75 ohm, long 10-15 rice, and preferred value is 10 meters.
The above-mentioned unit, ground of putting adopts many film resistances, and rear resistance in parallel is 200-400 ohm, and preferred value is 250 ohm.
The technical solution adopted for the present invention to solve the technical problems is: after the storage capacitor charging is complete, conducting is closed under the outside triggering signal effect of switch, electric capacity discharges to output cable, because the impedance of the relative output cable of load is high resistant, catadioptric can occur at the cable two ends in voltage wave, form approximate a succession of approximate square wave in load, the amplitude of square wave is near 2 times of charging voltage, and the pulsewidth of square wave and the time interval between the square wave are about the twice of cable transmission time.For obtaining the high voltage pulse of steep-front, need to be optimized the discharge loop parameter, comprising: the storage capacitor of selecting low inductance; Shorten the connecting line between each parts, and take coaxial configuration to reduce the inductance of loop line; Adopt the switch that conducting speed is fast, puncture is stable; The impedance of putting the unit, ground is unsuitable too small; Improve the impedance of output cable, suitably increase the length of output cable etc.
The concrete measure that solves its technical problem comprises: set up switch and select hydrogen thyratron, hydrogen thyratron is that a kind of hydrogen that utilizes is as the high-energy electron switch of medium, under off state, can bear the high voltage of 35kV, trigger gas switch with electricity and compare, the life-span of hydrogen thyratron is long, repetition rate is high, delay jitter is little; Designed the cylinder that refluxes the exposed part of hydrogen thyratron and storage capacitor and output cable be surrounded, reduced the inductance of discharge loop, steepness the high voltage pulse of exporting; Output cable is selected the higher coaxial cable of impedance (75 Ω), so that the forward position of the high voltage pulse that produces is steeper; Put the unit, ground and adopt many film resistance parallel connections, resistance is 250 Ω, has reduced to put the unit, ground to the impact of discharge loop, steepness the high voltage pulse of output.
The invention has the beneficial effects as follows, the repetition rate work that the high voltage pulse generator can be stable, and the amplitude of output electric pulse is high, the forward position is steep.
Description of drawings:
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is the vertical section structural map of the concrete discharge cell of the present invention.
Among the figure, 1. high voltage source, 2. charging resistor, 3. storage capacitor, 4. output cable, 5. hydrogen thyratron switch, 6. the external trigger signal is 7. put earth resistance, and the ground connecting plate is 9. put in 8. load, 10. insulating supporting, 11. cylinders that reflux.
Fig. 3 is the stack that first embodiment of the invention is operated in 1 minute output waveform of continuous operation under the 50Hz condition.Wherein passage 1 is the external trigger synchronizing signal, and passage 2 is the output waveform of this high voltage pulse generator.
Embodiment:
The present invention will be further described below in conjunction with accompanying drawing and embodiment.
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is the vertical section structural map of the concrete discharge cell of the present invention.
1, steeper for the forward position that makes output electric pulse, Rational choice the parameter of each parts, it is the low inductance ceramic condenser of 6nF that storage capacitor 3 is chosen capacity; The impedance of output cable 4 is chosen for 75 Ω, long 10 meters; Putting earth resistance 7 is that resistance is the film resistance of 250 Ω after the many parallel connections; Design the cylinder 11 that refluxes, the exposed part of hydrogen thyratron and storage capacitor and output cable has been surrounded, and is satisfying the physical size that has as far as possible dwindled discharge cell under the prerequisite of insulating requirements, reduced the inductance of discharge loop.
2, the course of work of the present invention is, the high-pressure side of storage capacitor 3 directly links to each other with hydrogen thyratron switch 5, the low-pressure end of storage capacitor utilizes screw to pass behind the insulating supporting 10 by putting ground connecting plate 9 and putting earth resistance 7 and link to each other again, the other end of putting earth resistance is connected to earth potential, totally consists of charge circuit.High voltage source 1 by charging resistor 2, put 7 pairs of storage capacitors of earth resistance 3 charging, the conducting of charging under the outside effect of triggering signal 6 of complete rear hydrogen thyratron switch 5 is closed, because capacitor two ends electromotive force can not suddenly change, so the end of storage capacitor 3 produces one and the opposite polarity electric pulse of charging voltage with putting.The end of storage capacitor links to each other with the heart yearn of output cable 4 with putting, and the electric pulse that therefore produces is applied in the load 8 by output cable 4.Because the impedance of the relative output cable of resistance of load is high resistant, so voltage wave can reflect, and obtains the electric pulse near 2 times of charging voltages in the load, produced simultaneously a reflected wave.Catadioptric can occur in reflected wave again after output cable transmits back storage capacitor, voltage wave is repeatedly after the catadioptric, can obtain a series of approximate square wave in load, the twice in the pulsewidth of square wave is voltage wave in output cable transmission time, the amplitude of voltage wave is near the twice charging voltage, but polarity is opposite.
3, Fig. 3 is the stack of first embodiment of the invention 1 minute output waveform of continuous operation under the 50Hz condition.Wherein passage 1 is the external trigger synchronizing signal, and passage 2 is the output waveform of this high voltage pulse generator.This embodiment maximum operating frequency can reach 100Hz, and the output time delay of system is 225ns, is dithered as 2ns, the forward position is 26ns, and pulsewidth (FWHM) is 70ns, and the peak value of trigger impulse is-40kV on the high resistance load, peak value during 50Hz work is-51kV that the peak value during single work is-60kV.
Embodiments of the invention can be stable repetitive operation, and output pulse the forward position steep, amplitude is high.
Claims (5)
1. high-voltage repetition-frequency pulse generator, comprise high voltage source, charging resistor, storage capacitor, output cable, switch, put earth resistance, put ground connecting plate, insulating supporting, it is characterized in that switch is hydrogen thyratron, exposed part at hydrogen thyratron, storage capacitor and output cable is provided with the cylinder that refluxes, the high-pressure side of storage capacitor directly links to each other with hydrogen thyratron, the low-pressure end of storage capacitor links to each other with an end of putting earth resistance by putting the ground connecting plate after utilizing screw to pass insulating supporting again, and the other end of putting earth resistance is connected to earth potential.
2. high-voltage repetition-frequency pulse generator as claimed in claim 1 is characterized in that it is the coaxial cable of 50-80 ohm that output cable is selected impedance.
3. high-voltage repetition-frequency pulse generator as claimed in claim 1 or 2 is characterized in that putting earth resistance and adopts many film resistance parallel connections.
4. high-voltage repetition-frequency pulse generator as claimed in claim 3 is characterized in that storage capacitor is that capacity is the low inductance ceramic condenser of 3～10nF; The impedance of output cable is 50-80 ohm, long 10-15 rice, and putting earth resistance is that resistance is the film resistance of 200-400 ohm after the many parallel connections.
5. high-voltage repetition-frequency pulse generator as claimed in claim 4 is characterized in that storage capacitor is that capacity is the low inductance ceramic condenser of 6nF; The impedance of output cable is 75 ohm, and is long 10 meters, puts earth resistance and be resistance after the many parallel connections and be 250 ohm film resistance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110007761 CN102136831B (en) | 2011-01-14 | 2011-01-14 | High-voltage repetition-frequency pulse generator |
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| CN 201110007761 CN102136831B (en) | 2011-01-14 | 2011-01-14 | High-voltage repetition-frequency pulse generator |
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| CN102136831A CN102136831A (en) | 2011-07-27 |
| CN102136831B true CN102136831B (en) | 2013-04-24 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102739201B (en) * | 2012-06-29 | 2014-12-31 | 西北核技术研究所 | Semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency |
| CN102931948B (en) * | 2012-08-15 | 2016-03-23 | 西北核技术研究所 | The high-pressure subnanosecond impulse source that a kind of fast switch is integrated with Blumlein line |
| CN103245894A (en) * | 2013-04-03 | 2013-08-14 | 云南电力试验研究院（集团）有限公司电力研究院 | Quick impulse voltage site GIS testing device |
| CN103795286B (en) * | 2014-02-21 | 2016-04-20 | 南京冠亚电源设备有限公司 | A kind of high pressure repetition clock based on GL1551G type hydrogen thyratron |
| CN105891563A (en) * | 2014-12-16 | 2016-08-24 | 中国人民解放军63973部队 | High-altitude nuclear explosion electromagnetic pulse standard signal analog device |
| CN107515334A (en) * | 2016-06-15 | 2017-12-26 | 上海索莘电子有限公司 | A kind of static discharge high frequency magnetic field interferance generator |
| CN107786115B (en) * | 2018-01-09 | 2024-06-14 | 中国工程物理研究院流体物理研究所 | Compact type pulse high-current device |
| CN109379069B (en) * | 2018-08-21 | 2021-06-25 | 杭州睿笛生物科技有限公司 | High-voltage coaxial switch device based on hydrogen thyratron |
| CN111009884B (en) * | 2019-12-10 | 2021-09-21 | 中国工程物理研究院应用电子学研究所 | False breakdown response system and implementation method of pulse power device |
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| JPS63178772A (en) * | 1987-01-16 | 1988-07-22 | Senichi Masuda | High-voltage pulse generator |
| JP3530367B2 (en) * | 1997-12-10 | 2004-05-24 | 三菱重工業株式会社 | Single power supply pulse charging device |
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| CN1085017A (en) * | 1993-08-26 | 1994-04-06 | 东南大学 | Colour change gas laser and motivational techniques thereof |
| CN1323100A (en) * | 2000-05-09 | 2001-11-21 | 西北核技术研究所 | Fast leading edge and high voltage square wave pulse generator |
| CN101865987A (en) * | 2010-06-17 | 2010-10-20 | 西安交通大学 | Capacitance sensor calibration system for measuring very fast transient overvoltage (VFTO) |
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| JP昭63-178772A 1988.07.22 |
| JP特开平11-177392A 1999.07.02 |
| 尹佳辉，曾江涛，孙凤举，张众，魏浩，刘志刚，姜晓峰.低抖动快前沿高电压重复率触发器.《强激光与粒子束》.2011,第23卷(第10期),2836-2840. * |
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