CN104935306A - High-power pulse gas switch trigger - Google Patents

High-power pulse gas switch trigger Download PDF

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CN104935306A
CN104935306A CN201510293614.8A CN201510293614A CN104935306A CN 104935306 A CN104935306 A CN 104935306A CN 201510293614 A CN201510293614 A CN 201510293614A CN 104935306 A CN104935306 A CN 104935306A
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transformer
switch
diode
voltage
electric capacity
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CN104935306B (en
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李宏达
赵红阳
王军
孟宪江
车龙
何伟胜
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Shenyang Ligong University
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Shenyang Ligong University
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Abstract

The invention discloses a high-power pulse gas switch trigger, and the trigger comprises a rectification filter circuit, a charging circuit, and a high-voltage output circuit. The charging circuit comprises upper-stage switches (TT1, H), lower-stage switches (VT2, L), diodes VD1 and VD2, an inductor L, a transformer T1, and capacitors C1 and C2. The high-voltage output circuit comprises a high-voltage pulse transformer T2, a high-voltage charging capacitor C3, a magnetic switch L2, and a load R. The trigger achieves the flexible adjustment of a trigger signal between dozens of kilovolts and hundreds of kilovolts, and can the triggering of a plurality of switches at the same time.

Description

A kind of high power pulse gas switch trigger
Technical field
The invention belongs to technical field of pulse power, specifically a kind of trigger for high power pulse gas switch.
Background technology
Gas switch device is key element conventional in high power pulse power technology, has several, dozens of in general pulse power device, and even hundreds of switching devices, and gas switch is operated in the environment of high voltage, big current.In order to make high power gas switch reliably trigger, need an additional high-voltage pulse triggering system, triggering system output voltage is generally the high voltage pulse of tens kilovolts to hundred kilovolts.Along with the development of Pulse Power Techniques, extensive research is carried out to various types of pulse triggering source both at home and abroad.
Summary of the invention
Object of the present invention, is to provide a kind of high power pulse gas switch trigger, achieves triggering signal and adjust flexibly between hundreds of kilovolt tens, and can realize Multi-Switch and trigger simultaneously.
The technical scheme adopted is:
A kind of high power pulse gas switch trigger, comprises current rectifying and wave filtering circuit, charging circuit and high-voltage output circuit, it is characterized in that:
Current rectifying and wave filtering circuit, comprises bridge rectifier D V, the first potentiometer W 1, the second potentiometer W 2with electric capacity C 1; First potentiometer W 1be serially connected in the positive pressure side of the power supply circuits after bridge rectifier rectification, the second potentiometer W 2then be serially connected in the negative pressure end of the power supply circuits after bridge rectifier rectification.Capacitor C 1one end and the first potentiometer W 1connect, its other end then with the second potentiometer W 2connect.
Charging circuit, comprises higher level's switch (VT 1, H), subordinate switch (VT 2, L), diode VD 1, diode VD 2, diode VD 3, inductance L 1with transformer T 1.
Higher level's switch VT 1, diode VD 1, inductance L 1with transformer T 1primary coil series connection after, through subordinate switch VT 2ground connection.Diode VD 2negative pole and VD 1negative pole connect, simultaneously and inductance L 1one end connects, diode VD 2plus earth.Electric capacity C 2one end and inductance L 1with transformer T 1any point on primary coil line connects, electric capacity C 2other end ground connection.Diode VD 3negative pole meet electric capacity C 2, connect inductance L simultaneously 1with transformer T 1one end of primary coil, diode VD 3cathode connecting transformer T 1the other end of primary coil, meet subordinate switch VT simultaneously 2.
High-voltage output circuit, comprises high voltage pulse transformer T 2, high-voltage charging electric capacity C 3, magnetic switch L 2with load R.Transformer T 1secondary coil malleation output adopt twisted-pair feeder, through magnetic switch L 2with high voltage pulse transformer T 2primary coil high-pressure side connect, high voltage pulse transformer T 2low-pressure end through twisted-pair feeder and transformer T 1secondary coil low-pressure end connect, high-voltage charging electric capacity C 3one end and magnetic switch L 2connect, high-voltage charging electric capacity C 3other end connection transformer T 1the low-pressure end of secondary coil, connects pulse transformer T simultaneously 2the low-pressure end of primary coil.
High voltage pulse transformer T 2output be connected in the trigger board between the high-field electrode of gas switch and low-field electrode, in Fig. 3 trigger board with load R substitute.
Above-mentioned high voltage pulse transformer is autotransformer, and magnetic core adopts magnetic permeability high, and the soft magnetic ferrite that cost performance is high; The coil rack of transformer is tapered structure, and its high-pressure side is in the middle part of skeleton, and low-pressure end is at the two ends of skeleton.
Above-mentioned VT 1, VT 2for insulating gate type field effect tube (enhancement mode).
The effect of components and parts of the present invention is described in further detail:
Fig. 2 (a) shows control frequency input (F) and voltage input (U), and higher level's switch (H, VT1) and subordinate switch (L, VT2) control delivery outlet; Fig. 2 (b) is that corresponding working state parameter is schemed over time.As can be seen from Fig. 2 (b), change state turn-on time of higher level's switch (H, VT1), change to 150 microseconds from 30 microseconds, voltage change from 200 volts to 600 ~ 680 volts of storage capacitors (C2) can be changed.
As shown in Figure 3, after disconnecting higher level's switch (H, VT1), subordinate's switch (L, VT2) is connected afterwards, through transformer Т 1 by " resting " time (about 1 microsecond), to storage capacitors C2 electric discharge in the time of 4 ~ 6 milliseconds, through Double-strand transmission, high-voltage charging electric capacity C3 is charged simultaneously.High-voltage charging electric capacity C3 as shown in Figure 3.
Adopt " twisted-pair feeder " type transmission line, for the high-tension cable not only expensive but also inconvenient relative to other and the high pressure connection of correspondence, so not only convenient but also economical.Length of transmission line used herein is 3m, and concrete length can make the appropriate adjustments according to actual needs, the longlyest reaches 10m.
As shown in Figure 3, connect magnetic switch and pulse transformer T2 after high-voltage charging electric capacity C3, magnetic switch affects by coil, iron core size and electromagnetic signature.The secondary pulses voltage-drop loading of transformer T1 is on C3, and when the secondary pulses voltage magnitude of T1 is not high, be not enough to make magnetic core voltagesecond product saturated, now magnetic switch inductance value is very high.Only have when the secondary pulses voltage magnitude of T1 reaches certain value, magnetic switch could be saturated, and now inductance value declines rapidly.Here the secondary pulses voltage magnitude of T1 need, when more than 600v, just can make magnetic switch saturated, and the secondary pulses voltage change range of the T1 of design is 600v ~ 1200v.The inductance value decline multiple of magnetic switch depends on core characteristics, and its multiple excursion is between 40 ~ 400 times.
Magnetic switch L 2specific works process is as follows: 1) during magnetic switch unsaturation, and its inductance value is very large, and the pulse voltage overwhelming majority is added on inductance, the voltage U on high-voltage charging electric capacity C3 c3very little, be equivalent to magnetic switch and disconnect.Voltage in transformer is substantially constant, maintains near zero; 2) when loop meets the voltagesecond product equilibrium equation of magnetic switch inductance, the inductance value of magnetic switch can sharply reduce, and namely induction reactance sharply reduces.Now, be equivalent to magnetic switch and close, the voltage on high voltage pulse transformer T2 primary coil reaches maximum rapidly.And the voltage rising time on high voltage pulse transformer T2 primary coil is than voltage U on C3 c3rise time wants much shorter.
As shown in Figure 3, high voltage pulse transformer T2 output is connected on load resistance R.In triggering system practical application, high voltage pulse transformer T2 output is connected in the trigger board between the high-field electrode and low-field electrode of gas switch.When the trigger voltage of triggering system is loaded in trigger board, gas switch is triggered.Concrete trigger process is: the polarity of trigger voltage is negative polarity, when being loaded in trigger board, first forms electric discharge between trigger board and high-field electrode, and then causes ionization.Now, the voltage instantaneous in trigger board becomes high potential, then discharges in formation between trigger board and low-field electrode, and then causes ionization, reaches and makes gas switch trigger object.
In the specific implementation, described high voltage pulse transformer T 2be placed on and SF is housed 6tank body in, by described Double-strand transmission pulse transformer T 1secondary voltage introduce in tank body.Adopt Double-strand transmission namely to serve the effect of the secondary voltage of transmission pulse transformer T1, high voltage pulse transformer T can be made again 2be convenient to be placed in tank body, serve good high_voltage isolation effect, the available protecting low-pressure section of triggering system.
As shown in Figure 4, for the output voltage wave figure of high power gas switch triggering system of the present invention, in Fig. 4, laterally every lattice of oscillogram represent 500 microseconds, and longitudinally every lattice represent 50kV, can find out that output voltage amplitude reaches the requirement to trigger voltage at about 200kV by curve 1.
Tool of the present invention has the following advantages:
1) to achieve triggering signal adjustable flexibly between 30kV to 200kV for gas switch trigger;
2) gas switch trigger can realize multiple switch and synchronously triggers;
3) high voltage pulse transformer T 2size is little, leakage inductance is little, can obtain good transformational;
4) namely " twisted-pair feeder " transmission serves anti-interference and high_voltage isolation effect, can save cost again;
5) high power pulse trigger structure is compacter, brief;
6) gas switch trigger also can be used for other scientific and technical key areas, as the research of electron beam and X-ray.
Accompanying drawing explanation
Fig. 1 is the general frame of high power pulse gas switch trigger of the present invention, and wherein unit 1 is pulse control unit, unit 2 is charhing unit, unit 3 is Long line transmission unit, unit 4 is High voltage output unit.
Fig. 2 is the concrete action principle figure of the pulse control unit of high power pulse gas switch trigger of the present invention.
Fig. 3 is the overall circuit figure of high power pulse gas switch trigger of the present invention.
Fig. 4 is the output voltage wave figure of high power pulse gas switch trigger of the present invention.
Embodiment
A kind of high power pulse gas switch trigger, comprises current rectifying and wave filtering circuit, charging circuit and high-voltage output circuit, it is characterized in that:
Current rectifying and wave filtering circuit, comprises bridge rectifier D V, the first potentiometer W 1, the second potentiometer W 2with electric capacity C 1; First potentiometer W 1be serially connected in the positive pressure side of the power supply circuits after bridge rectifier rectification, the second potentiometer W 2then be serially connected in the negative pressure end of the power supply circuits after bridge rectifier rectification.Capacitor C 1one end and the first potentiometer W 1connect, its other end then with the second potentiometer W 2connect.
Charging circuit, comprises higher level's switch (VT 1, H), subordinate switch (VT 2, L), diode VD 1, diode VD 2, diode VD 3, inductance L 1with transformer T 1.
Higher level's switch VT 1, diode VD 1, inductance L 1with transformer T 1primary coil series connection after, through subordinate switch VT 2ground connection.Diode VD 2negative pole and VD 1negative pole connect, simultaneously and inductance L 1one end connects, diode VD 2plus earth.Electric capacity C 2one end and inductance L 1with transformer T 1any point on primary coil line connects, electric capacity C 2other end ground connection.Diode VD 3negative pole meet electric capacity C 2, connect inductance L simultaneously 1with transformer T 1one end of primary coil, diode VD 3cathode connecting transformer T 1the other end of primary coil, meet subordinate switch VT simultaneously 2.
High-voltage output circuit, comprises high voltage pulse transformer T 2, high-voltage charging electric capacity C 3, magnetic switch L 2with load R.Transformer T 1secondary coil malleation output adopt twisted-pair feeder, through magnetic switch L 2with high voltage pulse transformer T 2primary coil high-pressure side connect, high voltage pulse transformer T 2low-pressure end through twisted-pair feeder and transformer T 1secondary coil low-pressure end connect, high-voltage charging electric capacity C 3one end and magnetic switch L 2connect, high-voltage charging electric capacity C 3other end connection transformer T 1the low-pressure end of secondary coil, connects pulse transformer T simultaneously 2the low-pressure end of primary coil.
High voltage pulse transformer T 2output be connected in the trigger board between the high-field electrode of gas switch and low-field electrode, in Fig. 3 trigger board with load R substitute.
Above-mentioned high voltage pulse transformer is autotransformer, and magnetic core adopts magnetic permeability high, and the soft magnetic ferrite that cost performance is high; The coil rack of transformer is tapered structure, and its high-pressure side is in the middle part of skeleton, and low-pressure end is at the two ends of skeleton.
Above-mentioned VT 1, VT 2for insulating gate type field effect tube (enhancement mode).

Claims (3)

1. a high power pulse gas switch trigger, comprises current rectifying and wave filtering circuit, charging circuit and high-voltage output circuit, it is characterized in that:
Current rectifying and wave filtering circuit, comprises bridge rectifier D V, the first potentiometer W 1, the second potentiometer W 2with electric capacity C 1; First potentiometer W 1be serially connected in the positive pressure side of the power supply circuits after bridge rectifier rectification, the second potentiometer W 2then be serially connected in the negative pressure end of the power supply circuits after bridge rectifier rectification, capacitor C 1one end and the first potentiometer W 1connect, its other end then with the second potentiometer W 2connect;
Charging circuit, comprises higher level's switch (VT 1, H), subordinate switch (VT 2, L), diode VD 1, diode VD 2, diode VD 3, inductance L and transformer T 1;
Higher level's switch VT 1, diode VD 1, inductance L 1after the primary coil series connection of transformer T, through subordinate switch VT 2ground connection, diode VD 2negative pole and VD 1negative pole connect, simultaneously and inductance L 1one end connects, diode VD 2plus earth, electric capacity C 2one end and inductance L 1with transformer T 1any point on primary coil line connects, electric capacity C 2other end ground connection, diode VD 3negative pole meet electric capacity C 2, connect inductance L simultaneously 1with transformer T 1one end of primary coil, diode VD 3cathode connecting transformer T 1the other end of primary coil, meet subordinate switch VT simultaneously 2;
High-voltage output circuit, comprises high voltage pulse transformer T 2, high-voltage charging electric capacity C 3, magnetic switch L 2with load R, transformer T 1secondary coil malleation output adopt twisted-pair feeder, through magnetic switch L 2with high voltage pulse transformer T 2primary coil high-pressure side connect, high voltage pulse transformer T 2low-pressure end through twisted-pair feeder and transformer T 1secondary coil low-pressure end connect, high-voltage charging electric capacity C 3one end and magnetic switch L 2connect, high-voltage charging electric capacity C 3other end connection transformer T 1the low-pressure end of secondary coil, connects pulse transformer T simultaneously 2the low-pressure end of primary coil;
High voltage pulse transformer T 2output be connected in the trigger board between the high-field electrode of gas switch and low-field electrode, trigger board with load R substitute.
2. a kind of high power pulse gas switch trigger according to claim 1, it is characterized in that described high-pressure pulsating transformer is autotransformer, the coil rack of transformer is tapered structure, and its high-pressure side is in the middle part of skeleton, and low-pressure end is at the two ends of skeleton.
3. a kind of high power pulse gas switch trigger according to claim 1, is characterized in that described VT 1, VT 2for insulating gate type field effect tube.
CN201510293614.8A 2015-06-02 2015-06-02 A kind of high power pulse gas switch trigger Active CN104935306B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105534565A (en) * 2015-12-07 2016-05-04 沈阳彼得康医疗科技有限公司 High-voltage pulse generating device for calculus smashing
CN105748147A (en) * 2016-02-22 2016-07-13 沈阳彼得康医疗科技有限公司 Staghorn calculus smashing device
CN108809274A (en) * 2018-07-12 2018-11-13 西南交通大学 A kind of pulse power generating means
CN110768564A (en) * 2019-07-09 2020-02-07 西安空间无线电技术研究所 Composite thruster load self-adaptive power supply system and power supply method
CN111697871A (en) * 2020-04-29 2020-09-22 西北核技术研究院 Output voltage adjusting method of Tesla transformer type pulse power source

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5905646A (en) * 1996-12-20 1999-05-18 Scanditronix Medical Ab Power modulator
CN1802790A (en) * 2003-06-09 2006-07-12 索雷克核研究中心 High voltage magnetic compression modulator
CN103094824A (en) * 2012-12-27 2013-05-08 中国科学院安徽光学精密机械研究所 Laser power supply
CN204906341U (en) * 2015-06-02 2015-12-23 沈阳理工大学 High power pulse gas switch trigger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5905646A (en) * 1996-12-20 1999-05-18 Scanditronix Medical Ab Power modulator
CN1802790A (en) * 2003-06-09 2006-07-12 索雷克核研究中心 High voltage magnetic compression modulator
CN103094824A (en) * 2012-12-27 2013-05-08 中国科学院安徽光学精密机械研究所 Laser power supply
CN204906341U (en) * 2015-06-02 2015-12-23 沈阳理工大学 High power pulse gas switch trigger

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105534565A (en) * 2015-12-07 2016-05-04 沈阳彼得康医疗科技有限公司 High-voltage pulse generating device for calculus smashing
CN105748147A (en) * 2016-02-22 2016-07-13 沈阳彼得康医疗科技有限公司 Staghorn calculus smashing device
CN108809274A (en) * 2018-07-12 2018-11-13 西南交通大学 A kind of pulse power generating means
CN108809274B (en) * 2018-07-12 2024-04-12 西南交通大学 Pulse power generating device
CN110768564A (en) * 2019-07-09 2020-02-07 西安空间无线电技术研究所 Composite thruster load self-adaptive power supply system and power supply method
CN111697871A (en) * 2020-04-29 2020-09-22 西北核技术研究院 Output voltage adjusting method of Tesla transformer type pulse power source

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