CN110212755A - A kind of transmission line isolated form Linear transformer driver - Google Patents
A kind of transmission line isolated form Linear transformer driver Download PDFInfo
- Publication number
- CN110212755A CN110212755A CN201910554116.2A CN201910554116A CN110212755A CN 110212755 A CN110212755 A CN 110212755A CN 201910554116 A CN201910554116 A CN 201910554116A CN 110212755 A CN110212755 A CN 110212755A
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- transmission line
- switching capacity
- module
- primary energy
- capacitor
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
- H02M3/073—Charge pumps of the Schenkel-type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
- H02M3/073—Charge pumps of the Schenkel-type
- H02M3/077—Charge pumps of the Schenkel-type with parallel connected charge pump stages
Abstract
The present invention relates to a kind of transmission line isolated form Linear transformer driver, which includes switching capacity primary energy module, isolation transmission line and induced voltage laminating module；Switching capacity primary energy module includes the M grade primary energy case being arranged in parallel, N number of switching capacity module in parallel in every grade of primary energy case；All high voltage gas switch in N number of switching capacity module synchronize triggering in parallel by trigger signal all the way；Induced voltage laminating module includes M grades of toroidal inductive chambers, and M grades of toroidal inductive chambers are arranged in series；Every grade of toroidal inductive is intracavitary to be equipped with magnetic core and N item circumferentially equally distributed radial transmission line；The present invention solves the problems, such as that it is big to be placed in caused breakdown performance reduction and maintenance workload in induction cavity for switch in existing LTD technology by way of isolating switching capacity primary energy module and induced voltage laminating module, while also solving the problems, such as that Thor types of devices cannot achieve voltage superposition.
Description
Technical field
The invention belongs to Pulse Power Techniques and technical field of high voltage, in particular to a kind of transmission line isolated form straight line becomes
Depressor driving source.
Background technique
High power Z-pinch is realized using Linear transformer driver (Linear Transformer Driver, LTD)
It is international research frontier in recent years[1].This is because LTD technology can pass through compared to traditional Pulse Power Techniques
Incude principle of stacking and export high current high pressure fast pulse, without playing any pulse compression section.It has compact-sized, modularization,
High repetition frequency operation, output waveform can reconcile the advantages such as fault-tolerant ability is stronger.
The research of current LTD is with Russian high current electronics research institute (HCEI) and the U.S., Asia laboratory, the Holy Land (SNL)
Represent, in, method, English also all simultaneously accordingly studied.
The LTDZ that HCEI succeeded in developing 1MA/100kV in 2004, the rise time is 70ns[3].In the cooperation with HCEI
Under, U.S. SNL has built up Ursa Minor device in 2010[4].The device has used 210 using 21 grades of LTD series connection altogether
Switch and 420 capacitors, the voltage output of 2MV is realized in charging ± 90kV in 30 ohm loads.SNL also draws simultaneously
Into the 500kA of HCEI[5]With 1MA LTD module[6], 5 grades of LTD concatenated 500kV, 1MA MYKKONOS have been built up at present
V device[7], the use of number of switches is 200.French atomic energy ministry CEA has built 10 grades of LTDR devices, in 6 ohm of load
Obtain 170kA/1.1MV, the pulse output of halfwidth 92ns[8].The device has used 160 switches and 320 capacitors altogether
Device.Britain's atomic energy weapon research establishment has succeeded in developing 17 grades of LTD of full air insulation under the cooperation with HCEI and France
Device, to substitute its existing Mevex device.The LTD has used 34 multistage multi-channel switches, and typical output parameter is
35kA/800kV[9].China Engineering Physics Research Institute has been developed into 10 grades of concatenated LTD devices, altogether using 100 switches and 200
A capacitor.For the device in charging ± 85kV, load current is about 116kA, and voltage is about 1.1MV, and voltage forward position is about
53ns, pulsewidth 146ns[10].Xibei Nuclear Techn Inst successively had developed 300kA/100ns, 700kA/ since 2000
The LTD module of 140ns, 800kA/100ns.Succeeded in developing in 2013 7 grades of LTDR tandem arrangements and computer control
The subsystems such as degaussing, charging, triggering, switch ventilation[11].The device uses 168 switches and 336 capacitors altogether.
It is the essential elements for determining its stability and service life in LTD device high voltage appearance gas switch.Existing LTD technology
In scheme, switch is sealed in induction cavity body, the maintenance needs of switch will almost whole device be dismantled, maintenance cost
It is very high.Single high-voltage switch gear service life only haveing excellent performance in tens of thousands of secondary magnitudes, and after being put into the closed metal cavity of LTD by
Change in complicated boundary condition, breakdown performance can also reduce, the test performance being unable to reach under its open condition.
And most LTD device number of switches for building are at 500 or less currently.However, mesh is with beauty
For the Z-pinch inertial confinement fusion driving source of state SNL design: program plan is in parallel using 210 road LTD, 60, every road
1MA LTD block coupled in series, each LTD module include 40 switches, and crest voltage electric current is respectively 24MV, 68MA.It calculates accordingly,
LTD device switch scale for nuclear fusion driving is up to 500,000 or more.This is than existing technical level in number of switches
Requirement on improve 3 orders of magnitude or more, so large-scale switch is synchronous, the stability of system is made in triggering and maintenance
At great challenge.
SNL proposed the novel high current source Thor of one kind in 2015 and tests for Material Physics[12].The device uses
The current parallel that 200kV transmission line generates 288 primary condensers is fed into load, is generated by large-current electric power
The pressure of 100GPa.Although the characteristics of this primary source and electric current convergence cell isolation of Thor is to promote size of current
And that designs still also brings the advantages of primary capacitor, switch and secondary load are isolated, so that the system that switch can be convenient
One maintenance.Although however, primary current parallel connection can be made to generate high current for Thor device but it does not have the energy of voltage superposition
Power.Its load output voltage is unable to reach the voltage requirement of inertial confinement fusion number MV in 100kV or so.
Bibliography cited above is as follows:
【1】Stygar W A,Cuneo M E,Headley D I,et al.Architecture of petawatt-
class z-pinch accelerators[J].Physical Review Special Topics-Accelerators and
Beams,2007,10(3):030401.
【2】Woodworth J R,Fowler W E,Stoltzfus B S,et al.Compact 810kA linear
transformer driver cavity[J].Physical Review Special Topics-Accelerators and
Beams,2011,14(4):040401.
【3】Kim A A,Bastrikov A N,Volkov S N,et al.100GW fast LTD stage[C]//
Proc.13th Int.Symp.High Current Electron.2004:141-144.
【4】Leckbee J,Cordova S,Oliver B,et al.Linear transformer driver(LTD)
research for radiographic applications[C]//Pulsed Power Conference(PPC),2011
IEEE.IEEE,2011:614-618.
【5】Mazarakis M G,Fowler W E,Kim A A,et al.High current,0.5-MA,fast,
100-ns,linear transformer driver experiments[J].Physical Review Special
Topics-Accelerators and Beams,2009,12(5):050401.
【6】Mazarakis M G,Fowler W E,LeChien K L,et al.High-current linear
transformer driver development at Sandia National Laboratories[J].IEEE
Transactions on Plasma Science,2010,38(4):704-713.
【7】Mazarakis M G,Cuneo M E,Fowler W E,et al.Z driver post-hole
convolute studies utilizing MYKONOS-V voltage adder[C]//Pulsed Power
Conference(PPC),2013 19th IEEE.IEEE,2013:1-7.
【8】Bayol F,Cubaynes F,Delplanque R,et al.Development of a 1 MV ultra-
fast LTD generator[C]//Pulsed Power Conference(PPC),2011 IEEE.IEEE,2011:619-
624.
[9] Bayol F, Calvignac J, Delplanque R, et al.Development and test of a~
800kV ,~35 kA air insulated LTD pulser for radiography application [C] //Pulsed
Power Conference(PPC),2015IEEE.IEEE,2015:1-6.
[10] Chen Lin, Wang Meng, Zou Wenkang wait the China Physics Institute fast pulse linear type transformer driving source Research progress
[J] high-voltage technology, 2015,41 (6): 1798-1806.
[11] Sun Fengju, Qiu Aici, Wei Hao wait spark photograph to discharge fastly the new development of linear type transformer clock [J]
Modern Application physics, 2015,6 (4): 233-243.
【12】Reisman,D.B.,et al.Pulsed power accelerator for material physics
experiments.Physical Review Special Topics-Accelerators and Beams 18.9(2015):
090401.
Summary of the invention
The present invention provides a kind of transmission line isolated form Linear transformer driver, is able to solve in existing LTD technology and opens
Pass is placed in caused breakdown performance reduction and the big problem of maintenance workload in induction cavity, while also solving Thor types of devices
The problem of cannot achieve voltage superposition.
The specific technical solution of the present invention is:
The present invention provides a kind of transmission line isolated form Linear transformer drivers, including switching capacity primary energy mould
Block, isolation transmission line and induced voltage laminating module；
The switching capacity primary energy module includes the M grade primary energy case being arranged in parallel, in every grade of primary energy case
N number of switching capacity module in parallel；
Each switching capacity module includes first capacitor device, the second capacitor and a high voltage gas switch；It is high
Voltage gas switch is between first capacitor device, the second capacitor；All high voltage gases in N number of switching capacity module are opened
It closes and triggering in parallel is synchronized by trigger signal all the way；
Induced voltage laminating module includes M grades of toroidal inductive chambers, and M grades of toroidal inductive chambers are arranged in series；
Every grade of toroidal inductive is intracavitary to be equipped with magnetic core and N item circumferentially equally distributed radial transmission line；
N number of switching capacity module in K primary energy case passes through N articles of isolation transmission line and K grades of toroidal inductives respectively
N intracavitary radial transmission line one end is connected, inner wall phase of the other end of N radial transmission line with the toroidal inductive chamber
Even.
Further, a lateral electrode of above-mentioned first capacitor device is connect with the cabinet wall of the primary energy case, another
Lateral electrode is connect with high voltage gas switch；Second capacitor, one lateral electrode is connect with the high voltage gas switch, the other side
Electrode is connected with transmission line is isolated.
Further, above-mentioned isolation transmission line includes isolation transmission line inner conductor and isolation transmission line outer conductor；Isolation passes
Defeated line inner conductor one end is connect with a lateral electrode of the second capacitor, and the other end and the radial direction that transmission line inner conductor is isolated pass
Defeated line connection；One end of isolation transmission line outer conductor is connect with the cabinet exterior of the primary energy case, is led outside isolation transmission line
The other end of body is connect with the outer wall of the toroidal inductive chamber.
Further, the impedance of the side electrode connection of above-mentioned isolation transmission line inner conductor one end and the second capacitor with
And transmission line direct impedance and the impedance matching of switching capacity module is isolated, meet relational expression:
Wherein: ZLCFor the impedance of switching capacity module, ZSCFor isolation transmission line inner conductor one end and the one of the second capacitor
The impedance of lateral electrode junction, ZTLFor be isolated transmission line impedance, L be switching capacity module inductance, C be first capacitor device and
Total capacitance after the series connection of second capacitor, R are capacitor, high voltage gas switch and high voltage gas in switching capacity module
The all-in resistance of switch.
Further, above-mentioned high voltage gas switch operating voltage is higher than twice of charging voltage and high voltage gas switch is
Trigger switch.
The beneficial effects of the present invention are:
1, the present invention is made by the way of isolating switching capacity primary energy module and induced voltage laminating module
High voltage gas switch and capacitor remove induction cavity, reduce influence of the small space to gas switch breakdown performance in induction cavity
Lifting switch breakdown performance.
2, switching capacity primary energy module and induced voltage laminating module by the way of being isolated by the present invention, greatly
It is maintainable to promote Linear transformer driver, when rapid wear high voltage gas switch and capacitor are not required to open sense when something goes wrong
Chamber is answered, can directly be safeguarded by primary energy case, greatly reduce maintenance workload.
3, structure of the invention can significantly reduce the impedance of Linear transformer driver, promote single-stage and incude cavity current,
Isolation transmission linear dimension is much smaller than switching capacity module size, under same radial size, can with the feed-in electric current of feed-in more multichannel,
Promote the size of current of Linear transformer driver.
4, structure of the invention reduces induction cavity volume, and induction cavity outer diameter is no longer limited by capacitors count and size
System, can be effectively reduced plant bulk.
5, structure lifting device modularization of the invention is horizontal, and primary energy module is isolated with induced voltage laminating module,
So that the change of current parameters only needs to change capacitor number in primary energy case, device is facilitated to be applied to different scenes.
Detailed description of the invention
Fig. 1 is switching capacity primary energy module diagram.
Fig. 2 is primary energy case schematic diagram.
Fig. 3 is induced voltage laminating module schematic diagram.
Fig. 4 is single-stage induced voltage laminating module cross-sectional view.
Appended drawing reference is as follows:
1- primary energy case, 2- switching capacity module, 3- first capacitor device, the second capacitor of 4-, 5- high voltage gas are opened
Transmission line outer conductor, 8- toroidal inductive is isolated in pass, 6- trigger signal, 7- isolation transmission line, 71- isolation transmission line inner conductor, 72-
Chamber, 9- magnetic core, 10- radial transmission line.
Specific embodiment
The present invention is further explained with reference to the accompanying drawing:
Transmission line isolated form Linear transformer driver of the invention includes switching capacity primary energy module, isolation transmission
Line and induced voltage laminating module；
As shown in Figure 1, switching capacity primary energy module includes the M grade primary energy case 1 being arranged in parallel, each primary energy
Source case 1 introduces trigger voltage all the way, and 1 trigger voltage timing of primary energy case at different levels pass through triggering length of transmission line control.
As shown in Fig. 2, each primary energy case 1 includes N number of switching capacity module 2.Each switching capacity module 2 includes the
One capacitor 3, the second capacitor 4 and a high voltage gas switch 5, high voltage gas switch 5 be located at first capacitor device 3 with
Between first capacitor device 4, N number of high voltage gas switch 5 synchronizes triggering in parallel by trigger signal 6 all the way.Each switching capacity mould
A lateral electrode of first capacitor device 3 is connected as ground electrode, the other side and height electricity with the cabinet exterior of primary energy case 1 in block 2
Press gas switch 5 be connected, the left electrodes of first capacitor device 4 are connected with high voltage gas switch 5, right electrodes be isolated transmit
Line 7 is connected.
What is required emphasis is a bit: the resistance of the side electrode connection of isolation transmission line inner conductor one end and the second capacitor
Anti- and isolation transmission line direct impedance and the impedance matching of switching capacity module, and meet relational expression:
Wherein: ZLCFor the impedance of switching capacity module, ZSCFor isolation transmission line inner conductor one end and the one of the second capacitor
The impedance of lateral electrode junction, ZTLFor be isolated transmission line impedance, L be switching capacity module inductance, C be first capacitor device and
Total capacitance after the series connection of second capacitor, R are capacitor, high voltage gas switch and high voltage gas in switching capacity module
The all-in resistance of switch.
As shown in Figure 3 and Figure 4, induced voltage laminating module includes M grades of toroidal inductive chambers 8, and M grades of toroidal inductive chambers 8 are connected
Setting；Being equipped with magnetic core 9 in every grade of toroidal inductive chamber 8, (magnetic core 9 is fixed in the inner by the dielectric of toroidal inductive chamber 8
Portion) and N radial transmission line 10；N number of switching capacity module 2 in K primary energy case 1 passes through N articles of isolation transmission respectively
Line 7 is connected with 10 one end of N articles of radial transmission line (Fig. 4 is upper end) in K grades of toroidal inductive chambers 8, N radial transmission line 10
The other end (Fig. 4 is that lower end is connected with inner wall)；
Each isolation transmission line 7 includes isolation transmission line inner conductor 71 and isolation transmission line outer conductor 72；Each radial biography
Defeated line 10 includes inner side and outer side.It is as follows in such a way that isolation transmission line specifically connects:
N number of 72 one end of isolation transmission line outer conductor is connected as ground electrode with certain 1 outer wall of level-one primary energy case, N number of
Isolation 72 other end of transmission line outer conductor is connected with 8 outer wall of respective stages toroidal inductive chamber, and the one of N number of isolation transmission line inner conductor 71
End connect with all first capacitor devices 4 in certain level-one primary energy case 1, isolation transmission line inner conductor 71 the other end with it is N number of
The connection of 10 one end of radial transmission line, the other end of N number of radial transmission line 10 are connect with 8 inner wall of toroidal inductive chamber.N number of radial direction
Transmission line 10 is distributed uniformly and circumferentially inside toroidal inductive chamber 8.
The working principle of the device is illustrated with the course of work below: by the method for positive and negative charging in parallel to switch
All capacitors charging in capacitor primary energy module, the first capacitor device 3 of each switched capacitor module 2 is negatively charged, the
One capacitor 4 is positive charged.N number of high voltage gas switch 5 in single-stage primary energy case 1 is by the synchronous triggering and conducting of trigger.It opens
The voltage output end for closing first capacitor device 4 after being connected becomes high-voltage potential from low pressure current potential, generates twice of charging voltage.Every grade
The high pressure that switching capacity module 2 generates is transmitted to induced voltage laminating module, every grade of switching capacity module by the way that transmission line 7 is isolated
2 road the N Synchronous High voltages generated reach the toroidal inductive chamber 8 of respective stages.The road N high pressure passes through the radial transmission line of toroidal inductive chamber 8
10 are fed into induction cavity from even circumferential, achieve the purpose that electric current is superimposed.The voltage pulse that previous stage generates passes through induction cavity
Interior radial transmission line is transmitted, and is superimposed when being transferred to next stage with the induced voltage wave of this grade and is achieved the purpose that voltage superposition.
Length by adjusting the triggering transmission line of primary energy case not at the same level incudes its electric pulse transmission delay equal to adjacent two-stage
Chamber electric pulse transmission delay, can make voltage be effectively superimposed.In the ideal case, it can finally be obtained on matched load
To N times of electric current and 2M times of charging voltage pulse.
To sum up, transmission line isolated form Linear transformer driver (LTD) proposed by the present invention, overcomes in traditional LTD and opens
It closes capacitance module and is in the disadvantage in induction cavity, the unified management to switch capacitance module may be implemented, significantly reduce LTD device
Impedance promotes its size of current, switch triggering performance, the maintainability for reducing induction cavity volume and significant increase accelerator.Together
When, the shortcomings that present invention can overcome Thor types of devices voltage that can not be superimposed, it is obviously improved device output voltage.
Claims (5)
1. a kind of transmission line isolated form Linear transformer driver, it is characterised in that:
Including switching capacity primary energy module, isolation transmission line and induced voltage laminating module；
The switching capacity primary energy module includes the M grade primary energy case being arranged in parallel, parallel connection N in every grade of primary energy case
A switching capacity module；
Each switching capacity module includes first capacitor device, the second capacitor and a high voltage gas switch；High voltage
Gas switch is between first capacitor device, the second capacitor；All high voltage gas switch in N number of switching capacity module are equal
Triggering in parallel is synchronized by trigger signal all the way；
Induced voltage laminating module includes M grades of toroidal inductive chambers, and M grades of toroidal inductive chambers are arranged in series；
Every grade of toroidal inductive is intracavitary to be equipped with magnetic core and N item circumferentially equally distributed radial transmission line；
N number of switching capacity module in K primary energy case passes through N articles of isolation transmission line respectively and K grades of toroidal inductives are intracavitary
N radial transmission line one end be connected, the other end of N radial transmission line is connected with the inner wall of the toroidal inductive chamber.
2. transmission line isolated form Linear transformer driver according to claim 1, it is characterised in that: first capacitor device
One lateral electrode is connect with the cabinet wall of the primary energy case, and another lateral electrode is connect with high voltage gas switch；Second electricity
One lateral electrode of container is connect with the high voltage gas switch, and another lateral electrode is connected with transmission line is isolated.
3. transmission line isolated form Linear transformer driver according to claim 2, it is characterised in that: isolation transmission line packet
Include isolation transmission line inner conductor and isolation transmission line outer conductor；The side electricity of transmission line inner conductor one end and the second capacitor is isolated
The other end of pole connection, isolation transmission line inner conductor is connect with the radial transmission line；Be isolated transmission line outer conductor one end with
The cabinet exterior of the primary energy case connects, and the outer wall of the other end and the toroidal inductive chamber that transmission line outer conductor is isolated connects
It connects.
4. transmission line isolated form Linear transformer driver according to claim 3, it is characterised in that: in isolation transmission line
Conductor one end and the impedance of the side electrode connection of the second capacitor and transmission line direct impedance and switching capacity mould is isolated
Block impedance matching, meets relational expression:
Wherein: ZLCFor the impedance of switching capacity module, ZSCFor isolation transmission line inner conductor one end and the side of the second capacitor electricity
The impedance of pole junction, ZTLFor the impedance that transmission line is isolated, L is the inductance of switching capacity module, and C is first capacitor device and second
Total capacitance after capacitor series connection, R are capacitor, high voltage gas switch and high voltage gas switch in switching capacity module
All-in resistance.
5. transmission line isolated form Linear transformer driver according to claim 1, it is characterised in that: high voltage gas is opened
It closes operating voltage and is higher than twice of charging voltage and high voltage gas switch for trigger switch.
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| CN201910554116.2A CN110212755B (en) | 2019-06-25 | 2019-06-25 | Transmission line isolated form linear transformer driving source |
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| CN201910554116.2A CN110212755B (en) | 2019-06-25 | 2019-06-25 | Transmission line isolated form linear transformer driving source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU202843U1 (en) * | 2020-08-06 | 2021-03-11 | Федеральное государственное бюджетное учреждение науки Институт сильноточной электроники Сибирского отделения Российской академии наук (ИСЭ СО РАН) | HIGH VOLTAGE HIGH CURRENT PULSE INDUCTOR |
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