CN203871656U - Laser trigger device for large power gas switch - Google Patents
Laser trigger device for large power gas switch Download PDFInfo
- Publication number
- CN203871656U CN203871656U CN201420320595.4U CN201420320595U CN203871656U CN 203871656 U CN203871656 U CN 203871656U CN 201420320595 U CN201420320595 U CN 201420320595U CN 203871656 U CN203871656 U CN 203871656U
- Authority
- CN
- China
- Prior art keywords
- laser
- power gas
- gas switch
- switch
- trigger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 30
- 230000001360 synchronised effect Effects 0.000 claims description 15
- 239000013307 optical fiber Substances 0.000 claims description 10
- 238000002955 isolation Methods 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 abstract description 2
- 230000001960 triggered effect Effects 0.000 description 14
- 230000003071 parasitic effect Effects 0.000 description 4
- 230000003245 working effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Lasers (AREA)
Abstract
A laser trigger device for a large power gas switch comprises a high voltage arm resistor and a lower voltage arm resistor connected in series between a high voltage electrode and a low voltage electrode; common ends of the high voltage arm resistor and the low voltage arm resistor are connected with a trigger electrode through a first pulse device; two ends of the low voltage arm resistor are connected in parallel with a second pulse device; the first and second pulse devices are respectively either a power storage capacitor or a light guide switch; the laser trigger device also comprises a lighting device conducting laser lighting to the light guide switch. The advantages are that the trigger system of the high power pulse power device is simpler; many high power gas switches can work in synchronization; the laser triggering the light guide switch is led in by a fiber, so high voltage isolation between the pulse power device and an outer system can be realized; waveforms outputted by the pulse power device is more flexible in adjustment.
Description
Technical field
The utility model belongs to Nuclear Science and Technology field, is specifically related to the high power (10 using in pulse power device
8-10
10watt) a kind of triggering mode of gas switch, be applied to the triggering of high power gas switch in pulse power device, relate to a kind of laser trigger equipment for high-power gas switch.
Background technology
High power gas switch is the critical component in high power pulse power device, operating voltage is generally from tens kilovolts to hundreds of kilovolt, electric current is from several kilo-amperes to hundred kilo-amperes, in general pulse power device, have several to hundreds of, even more identical like this high power gas switchs.But the normal work of these high power gas switchs, need the high voltage pulse (being commonly referred to as high-voltage pulse triggering system) of additional tens kilovolts to hundred kilovolts, for example, so need to introduce high-tension cable, and high-voltage pulse triggering system also needs the high-voltage pulse generator generation high-tension pulse of low voltage (thousands of volts) to wash away generation driving pulse.
Photoconductive switch (Photoconductive semiconductor switch, PCSS) has the advantages such as low jitter, fast forward position, photoelectricity isolation.The triggering of photoconductive switch is to realize switch conduction by laser pumping.If can realize high pressure trigger element and the integrated design of high power gas switch based on photoconductive switch, will have the following advantages: the triggering system of (1) high power pulse power device is more brief; (2) be easy to realize multiple high power gas switch synchronous workings; (3) laser that triggers photoconductive switch is introduced by optical fiber, can realize the high pressure isolation of pulse power device with external system.
Utility model content
For realizing, photoconductive switch is applied to the object for the laser trigger equipment of high-power gas switch, the utility model discloses a kind of laser trigger equipment for high-power gas switch.
Laser trigger equipment for high-power gas switch described in the utility model, is connected between the high-field electrode and low-field electrode of high power gas switch,
Comprise the high-voltage arm resistance and the low-voltage arm resistance that are connected between high-field electrode and low-field electrode, described high-voltage arm resistance is connected with trigger electrode by the first pulse device with the common port of low-voltage arm resistance, and described low-voltage arm resistance two ends are parallel with the second pulse device; Described the first pulse device and the second pulse device be respectively storage capacitor, photoconductive switch the two one of; Also comprising can be by laser light according to the luminescent device acting on to photoconductive switch.
Concrete, described luminescent device is laser diode or laser.
Further, described luminescent device also comprises the optical fiber being connected between laser diode or laser and photoconductive switch.
Further, described luminescent device is laser diode, and described laser diode and photoconductive switch are positioned at same mechanical structure.
Preferably, also comprise the loop current-limiting resistance being connected between the first pulse device and trigger electrode.
Preferably, also comprise for controlling high power gas switch charging and the luminous trigger synchronous circuits of luminescent device, described trigger synchronous circuits is for setting high power gas switch and charge and the time interval of luminescent device between luminous.
Preferably, between described high-field electrode and low-field electrode, be parallel with divider resistance string.
Concrete, described storage capacitor capacitance is between 10 pico farad to 100 nanofarads.
The trigger equipment of the relatively traditional high power gas switch of the utility model has following superiority, and the triggering system of (1) high power pulse power device is more brief; (2) be easy to realize multiple high power gas switch synchronous workings; (3) laser that triggers photoconductive switch is introduced by optical fiber, can realize the high pressure isolation of pulse power device with external system; (4) regulation and control of pulse power device output waveform are more flexible.
Brief description of the drawings
Fig. 1 is a kind of embodiment structural representation of the laser trigger equipment for high-power gas switch described in the utility model;
Fig. 2 is another embodiment structural representation of the laser trigger equipment for high-power gas switch described in the utility model;
In figure, Reference numeral name is called: R1-high-voltage arm resistance R 2-low-voltage arm resistance R3-loop current-limiting resistance C-storage capacitor CE-triggered gap capacitor P CSS-photoconductive switch SH-high-field electrode SL-low-field electrode VTRI-trigger electrode, SP-positive plate, SN-negative plate.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
In embodiment as shown in Figure 1, SH connects the high-field electrode of high power gas switch, and SL connects the low-field electrode of high power gas switch; R1 and R2 are respectively high-voltage arm resistance and the low-voltage arm resistance of resitstance voltage divider, and R1 and R2 connect and compose partial pressure unit; PCSS is photoconductive switch, is connected in parallel on the two ends of low-voltage arm resistance; C is the storage capacitor of circuits for triggering, one end is connected to the intersection point of photoconductive switch, high-voltage arm resistance, low-voltage arm resistance, in the embodiment of Fig. 1, preferably be provided with loop current-limiting resistance R3, the setting of current-limiting resistance is beneficial to more control impuls electric current and the pulse duration of aspect, R3 one end connects capacitor C, and the other end is trigger electrode VTRI, is connected to the trigger electrode of high power gas switch; LASER Light Source is placed on optional position, and the laser of its generation to photoconductive switch, is controlled the break-make of photoconductive switch through Optical Fiber Transmission.
Between the trigger electrode VTRI of high power gas switch and ground, there is a triggered gap, this triggered gap is equivalent to a parasitic capacitance, be the triggered gap capacitor C E in Fig. 1, under common service condition, the low-field electrode ground connection of high power gas switch, between trigger electrode VTRI and low-field electrode SL, form a parasitic capacitance, in Fig. 1 to 2, be represented by dotted lines.
In the time that the high-field electrode SH of high power gas switch end loads direct voltage, storage capacitor C one end and high-field electrode obtain energy by the charging of high-voltage arm resistance, positive plate SP voltage is positive high voltage, negative plate SN is capacitively coupled to electronegative potential by triggered gap, when laser triggers after photoconductive switch PCSS conducting, storage capacitor SP is held directly and low-field electrode SL short circuit, SN holds owing to being connected with trigger electrode, therefore C reality is discharged to CE, CE two ends polarity is contrary with high power gas switch polarity of voltage, when triggered gap capacitor C E is because bearing after the high voltage conducting of storage capacitor release, storage capacitor C passes through PCSS, triggered gap capacitor C E, and discharge in the loop that loop current-limiting resistance R3 forms, produce initiating electron, and then the conducting of initiation high power gas switch.
In embodiment as shown in Figure 2, the location swap of photoconductive switch and storage capacitor, storage capacitor C is connected in parallel on low-voltage arm resistance two ends, and photoconductive switch PCSS is connected between loop current-limiting resistance R3 and the common node of high and low pressure arm resistance.
To the embodiment shown in Fig. 2, in the time that high power gas switch two ends load direct current or pulse voltage, storage capacitor C is connected between high-field electrode SH and low-field electrode SL, obtains energy.Subsequently, LASER Light Source Output of laser triggers photoconductive switch PCSS conducting, and storage capacitor C both end voltage is loaded into triggered gap capacitor C E immediately, and polarity is identical with high power gas switch both end voltage polarity.When triggered gap capacitor C E two ends are because bearing after high voltage conducting, trigger capacitor C and discharge by the loop of PCSS, triggered gap capacitor C E, loop current-limiting resistance R3 formation, cause triggered gap and puncture, gap breakdown will produce electric spark, cause ionization, main gap is punctured.
Usually, in Fig. 1 and Fig. 2, the value of loop current-limiting resistance R3 is at several ohm to hundreds of ohm, and the capacitance of storage capacitor, between 10 pico farad to 100 nanofarads, is determined on a case-by-case basis.The principle of two embodiment is identical, is and utilizes the parasitic capacitance of triggered gap to the loop electric discharge that comprises triggered gap electric capacity, and difference is in the time triggering with trigger electrode VTRI, and VTRI place obtains the polarity difference of voltage.In addition, middle trigger electrode embodiment illustrated in fig. 1 is connected to the intermediate node of divider resistance through loop current-limiting resistance R3, storage capacitor C, because capacitor has the logical effect exchanging of isolated DC, the pulse voltage applying when pulse current charge is directly loaded into trigger electrode by storage capacitor C after dividing potential drop, and storage capacitor is owing to not having energy storage to cause circuits for triggering to lose efficacy.Therefore, be embodiment illustrated in fig. 1ly applicable to use DC charging situation.
The utility model utilizes laser photoconductive switch to trigger high power gas switch, make the high-pressure system of traditional bulky complexity, simplify the design of high power gas switch, utilize cleverly the parasitic capacitance of trigger electrode as the composition in charging and triggering loop, generate thereby reach the object that triggers high pressure triggering gas switch.
Swash light-triggered photoconductive switch triggering high power gas switch owing to adopting, complicated synchronous control system and high-voltage pulse power source are saved, only need to regulate output and the synchronous output waveform that just can regulating impulse power device of laser, thereby make more flexible.
Described luminescent device is laser diode or laser.The mode of operation and the photoconductive mode that swash light wavelength, pulsewidth and energy and photoconductive switch are closely related.Laser needs the accessory such as power supply, cooling water tank, and volume is larger, but the laser energy of output is high, beam quality good.The utility model, adopting laser during as LASER Light Source, can coordinate optical fiber to use together, by bulky but go out light quality good laser is placed in far-end, by optical fiber by laser transmission near photoconductive switch, thereby the flexibility that has improved laser; Meanwhile, laser can be used for by beam splitting the synchronous triggering of multiple photoconductive switchs.
Laser diode small volume, multiple laser diodes can forming array, while adopting laser diode as LASER Light Source, can directly place it in high power gas switch electrode place, for example laser diode and photoconductive switch can be placed in same mechanical structure, for example box body or cell body etc., also can be placed on far-end, coordinates Optical Fiber Transmission.Therefore, no matter be to adopt laser or laser diode, all LASER Light Source can be placed on to the position away from photoconductive switch.
More than adopt each photoconductive switch of fiber beam splitting input control, be easy to realize multiple high power gas switch synchronous workings; The introducing of optical fiber is also convenient to realize the high pressure isolation of pulse power device with external system.
In order further to improve, high and low pressure electrode powers on and the sequential interval accuracy of photoconductive switch conducting, gas switch charging and the luminous trigger synchronous circuits of luminescent device can be set, and described trigger synchronous circuits is for setting high power gas switch and charge and the time interval of luminescent device between luminous.Can take the charging of the equipment control high power gas switchs such as external delay synchronizer and the triggering synchronous of photoconductive switch.In theory, as long as after powering on, each electrode and storage capacitor complete charging, can carry out illumination trigger action, charging interval is depended on the electric capacity total amount of each node and the power supply self that powers on, can be controlled at the following nanosecond rank of millisecond general interval time, uses the form of synchronous circuit can significantly shorten interval time and improve the accuracy of controlling.Can also between described high-field electrode and low-field electrode, be parallel with divider resistance string, obtain intermediate voltage from the intermediate node of divider resistance string, be the triggering power supply of trigger electrode.
The trigger equipment of the relatively traditional high power gas switch of the utility model has following superiority, and the triggering system of (1) high power pulse power device is more brief; (2) be easy to realize multiple high power gas switch synchronous workings; (3) laser that triggers photoconductive switch is introduced by optical fiber, can realize the high pressure isolation of pulse power device with external system; (4) regulation and control of pulse power device output waveform are more flexible.
Previously described is each preferred embodiment of the present utility model, preferred implementation in each preferred embodiment is if not obviously contradictory or taking a certain preferred implementation as prerequisite, each preferred implementation arbitrarily stack combinations is used, design parameter in described embodiment and embodiment is only the utility model proof procedure for clear statement utility model inventor, not in order to limit scope of patent protection of the present utility model, scope of patent protection of the present utility model is still as the criterion with its claims, the equivalent structure that every utilization specification of the present utility model and accompanying drawing content are done changes, in like manner all should be included in protection range of the present utility model.
Claims (8)
1. for the laser trigger equipment of high-power gas switch, be connected between the high-field electrode and low-field electrode of high power gas switch,
It is characterized in that, comprise the high-voltage arm resistance and the low-voltage arm resistance that are connected between high-field electrode and low-field electrode, described high-voltage arm resistance is connected with trigger electrode by the first pulse device with the common port of low-voltage arm resistance, and described low-voltage arm resistance two ends are parallel with the second pulse device;
Described the first pulse device and the second pulse device be respectively storage capacitor, photoconductive switch the two one of;
Also comprising can be by laser light according to the luminescent device acting on to photoconductive switch.
2. the laser trigger equipment for high-power gas switch as claimed in claim 1, is characterized in that, described luminescent device is laser diode or laser.
3. the laser trigger equipment for high-power gas switch as claimed in claim 2, is characterized in that, described luminescent device also comprises the optical fiber being connected between laser diode or laser and photoconductive switch.
4. the laser trigger equipment for high-power gas switch as claimed in claim 2, is characterized in that, described luminescent device is laser diode, and described laser diode and photoconductive switch are positioned at same mechanical structure.
5. the laser trigger equipment for high-power gas switch as claimed in claim 1, is characterized in that, also comprises the loop current-limiting resistance being connected between the first pulse device and trigger electrode.
6. the laser trigger equipment for high-power gas switch as claimed in claim 1, it is characterized in that, also comprise for controlling high power gas switch charging and the luminous trigger synchronous circuits of luminescent device, described trigger synchronous circuits is for setting high power gas switch and charge and the time interval of luminescent device between luminous.
7. the laser trigger equipment for high-power gas switch as claimed in claim 1, is characterized in that, is parallel with divider resistance string between described high-field electrode and low-field electrode.
8. the laser trigger equipment for high-power gas switch as claimed in claim 1, is characterized in that, described storage capacitor capacitance is between 10 pico farad to 100 nanofarads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320595.4U CN203871656U (en) | 2014-06-17 | 2014-06-17 | Laser trigger device for large power gas switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320595.4U CN203871656U (en) | 2014-06-17 | 2014-06-17 | Laser trigger device for large power gas switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871656U true CN203871656U (en) | 2014-10-08 |
Family
ID=51652579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420320595.4U Expired - Lifetime CN203871656U (en) | 2014-06-17 | 2014-06-17 | Laser trigger device for large power gas switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871656U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079279A (en) * | 2014-06-17 | 2014-10-01 | 中国工程物理研究院流体物理研究所 | High-power gas switch trigger system |
| CN106849924A (en) * | 2017-03-10 | 2017-06-13 | 中国工程物理研究院流体物理研究所 | A kind of integrated IGBT structure of Integrated Light triggering and method for designing |
| CN107957536A (en) * | 2017-10-16 | 2018-04-24 | 许继电气股份有限公司 | Sychronisation and pilot system are tested in a kind of aperiodic triggering of direct-current transmission converter valve |
-
2014
- 2014-06-17 CN CN201420320595.4U patent/CN203871656U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079279A (en) * | 2014-06-17 | 2014-10-01 | 中国工程物理研究院流体物理研究所 | High-power gas switch trigger system |
| CN104079279B (en) * | 2014-06-17 | 2017-02-01 | 中国工程物理研究院流体物理研究所 | High-power gas switch trigger system |
| CN106849924A (en) * | 2017-03-10 | 2017-06-13 | 中国工程物理研究院流体物理研究所 | A kind of integrated IGBT structure of Integrated Light triggering and method for designing |
| CN106849924B (en) * | 2017-03-10 | 2023-05-16 | 中国工程物理研究院流体物理研究所 | Integrated light triggering type IGBT structure and design method |
| CN107957536A (en) * | 2017-10-16 | 2018-04-24 | 许继电气股份有限公司 | Sychronisation and pilot system are tested in a kind of aperiodic triggering of direct-current transmission converter valve |
| CN107957536B (en) * | 2017-10-16 | 2019-12-10 | 许继电气股份有限公司 | Non-periodic trigger test synchronization device and non-periodic trigger test system for direct-current transmission converter valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104079279A (en) | High-power gas switch trigger system | |
| US10587188B2 (en) | Resonant pulsed voltage multiplier and capacitor charger | |
| CN103326612A (en) | Unipolar microsecond pulse high voltage power supply | |
| CN105119517A (en) | High-voltage pulse power supply for synchronous discharge of multiple spark plasma synthetic jet actuators | |
| CN103248264A (en) | Trigger for triggering Trigatron gas switch | |
| CN206116865U (en) | Laser diode drive circuit | |
| CN102136831B (en) | High-voltage repetition-frequency pulse generator | |
| CN109391006A (en) | Energy supply circuit and laser radar apparatus | |
| CN203871656U (en) | Laser trigger device for large power gas switch | |
| CN103490662B (en) | High-isolation high-voltage pulse power source | |
| CN110459955A (en) | A kind of semiconductor laser device driving circuit of high high-power Gao Zhongying | |
| EP2980953A2 (en) | Quick low-voltage rechargeable battery | |
| CN105162313B (en) | A kind of inverse-excitation type switch power-supply | |
| WO2006036750A3 (en) | Systems and methods for signal generation using limited power | |
| CN100448334C (en) | The power source for the flash discharge lamp and the control method thereof | |
| CN104244545A (en) | Triggering pre-burning device with xenon lamp | |
| CN106353953A (en) | Flashlight module and flashlight power module | |
| CN110943725A (en) | Transformer-based integrated weak light triggering gas switch circuit and working method thereof | |
| CN108063549B (en) | Isolation control circuit | |
| CN107834835B (en) | High integration level high calendering slow starting drive | |
| CN203850886U (en) | Hybrid floating charge voltage-stabilizing source | |
| CN208369551U (en) | A kind of integration dim light triggering gas switch | |
| CN104184437A (en) | High-power repeated frequency quick pulse linear type transformer driving source and control method thereof | |
| CN107070290A (en) | A kind of pulse trigger module suitable for triggered vacuum gap | |
| CN208623563U (en) | A kind of square-wave voltage source being isolated using high-voltage relay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |