CN105227160B - The square wave Linear transformer driver of double-layer coaxial structure - Google Patents
The square wave Linear transformer driver of double-layer coaxial structure Download PDFInfo
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- CN105227160B CN105227160B CN201510600054.6A CN201510600054A CN105227160B CN 105227160 B CN105227160 B CN 105227160B CN 201510600054 A CN201510600054 A CN 201510600054A CN 105227160 B CN105227160 B CN 105227160B
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Abstract
The present invention relates to a kind of Linear transformer driver (Linear Transformer Driver, abbreviation LTD), including outer layer discharge module, secondary cylinder and the internal layer discharge module sequentially coaxially set from outside to inside；Outer layer discharge module one end is grounded, and the other end connects secondary cylinder, forms outer layer fundamental frequency loop；Internal layer discharge module one end is grounded, and the other end connects secondary cylinder, forms internal layer harmonic wave regulating loop；Secondary cylinder one end ground connection, it is grounded after other end connection load, forms outer layer fundamental frequency loop, internal layer harmonic wave regulating loop common sparing.The square wave Linear transformer driver of coaxial configuration provided by the present invention, its space availability ratio is high, small volume, can significantly reduce driving source cost.Two layers of discharge module is coaxially arranged inside and outside present invention use, compact-sized, and the output of more power can be obtained under same volume.
Description
Technical field
The present invention relates to a kind of Linear transformer driver (Linear Transformer Driver, abbreviation LTD).
Background technology
Fast pulse Linear transformer driver (FLTD) can directly export the fast rise time Gao Gong of hundred nanoseconds without pulse compression
Rate pulse, compared to traditional pulse power supply, there is compacter, modularization, low cost, obtained in last decade
Rapid development.FLTD technologies have turned into the researchs such as Z constrictions inertial confinement fusion (ICF), spark photograph, PRK neck at present
The technology path of the prioritizing selection of driving source in domain.U.S. SNL proposes electric current 60MA's in Z constriction fusion energy resource projects
FLTD driving source conceptual designs；Driving source also uses FLTD technologies in the spark photograph research that SNL and French CE A cooperates；Russia sieve
FLTD technologies are successfully applied to XeF excimer lasers by this HCEI.
FLTD, using electromagnetic coupled, realizes single-stage by multiple discharge paths parallel connection synchronous discharges of radially uniform arrangement
Multiple branch current superpositions and Multi-stage module voltage superposition, its output waveform is mainly determined by the inductance capacitance of single branch road, is in
Sinusoidal decay shape.And the output waveform that driving source is more desirable in other research fields such as spark photograph and PRK is in
Square wave, i.e., fast rising front and flat flat-top.Russian HCEI A.A.KIM et al. proposes to be based on square wave Fourier level
Mathematics opinion, triple-frequency harmonics discharge paths are incorporated in former LTD modules and realize the method for quasi-square wave pulse output, and carried out preliminary
Experimental verification.FLTD single modules are made up of 4 standard discharge paths and 2 triple-frequency harmonics regulation branch roads, when module charges ±
During 100kV rising front 30ns, half-breadth 73ns, amplitude 78kV quasi-square wave pulses are obtained in 1.65 Ω loads.Chinese engineering
Zhao Yue of physical study institute et al. also carried out square wave LTD design using this method, Preliminary Simulation harmonic wave branch parameters and
Influence of the factors such as switch from fluttering to square wave LTD output parameters.
Although theory analysis and original reason experiment demonstrate the feasibility that LTD realizes square wave output, increase harmonic wave circuitry number
Output waveform can be made to be more nearly square wave, but because the introducing of harmonic wave branch road will cause discharge paths number in module at least to increase
Half, if discharge paths will cause magnetic core and insulation sub-volume to increase according to common arrangement mode, cost performance is not high.Especially
FLTD modules for producing megampere level output current, external diameter reaches 3m, if being further added by volume, magnetic core and insulator manufacture difficulty
Greatly, module cost will be multiplied.
The content of the invention
It is an object of the invention to provide a kind of square wave Linear transformer driver of double-layer coaxial structure, its space availability ratio
Height, small volume, driving source cost can be significantly reduced.
The present invention technical solution be：The square wave Linear transformer driver of the double-layer coaxial structure provided, bag
Include the outer layer discharge module sequentially coaxially set from outside to inside, secondary cylinder and internal layer discharge module；The outer layer discharge module one
End ground connection, the other end connect secondary cylinder, form outer layer fundamental frequency loop；Internal layer discharge module one end ground connection, other end connection
Secondary cylinder, form internal layer harmonic wave regulating loop；Secondary cylinder one end ground connection, is grounded after other end connection load, inside and outside composition
Layer LTD common returns part.Inside and outside two layers of discharge module is coaxially arranged, compact-sized, and the driving source can obtain under same volume
Obtain the output of more power.
Above-mentioned outer layer discharge module includes outer layer high-tension electricity polar ring, outer layer magnetic core and the multiple phases set gradually from the inside to the outside
Mutually outer layer discharge paths in parallel；The outer layer high-field electrode was connected after surrounding outer layer magnetic core with outer layer discharge paths.Internal layer
Discharge module includes the internal layer high-tension electricity polar ring, internal layer magnetic core and multiple internal layer electric discharges parallel with one another set gradually from outside to inside
Branch road；The internal layer high-field electrode was connected after surrounding internal layer magnetic core with internal layer discharge paths.Outer layer discharge paths are put for fundamental frequency
Electric branch road, internal layer discharge paths are that harmonic wave adjusts branch road, and square-wave pulse output can be achieved.
Present invention has the advantages that：
(1) two layers of discharge module is coaxially arranged inside and outside present invention use, compact-sized, can be obtained more under same volume
High-power output.
(2) outer layer discharge paths of the invention are fundamental frequency discharge paths, and internal layer discharge paths are that harmonic wave adjusts branch road, not
Square-wave pulse output can be achieved in the case of increase driving volume source, and module interior element manufacture difficulty is relatively small, space profit
It is high with rate, driving source cost can be significantly reduced.
(3) discharge paths of the present invention are arranged as spoke-like, and fundamental frequency discharge paths are located on excircle, harmonic wave regulation branch road position
Can suitably it reduce in the capacitor on inner periphery, therefore in harmonic wave regulation branch road and volume of switch, discharge loop inductance can show
Write and reduce, delivery efficiency is of a relatively high.
(4) present invention can use multiple block coupled in series, and the square wave arteries and veins of higher voltage more power is obtained in load
Punching.
Brief description of the drawings
Fig. 1 is the three dimensional structure diagram of present pre-ferred embodiments；
Fig. 2 is the internal structure top view of present pre-ferred embodiments；
Fig. 3 is the partial sectional view of present pre-ferred embodiments；
Fig. 4 is the square wave output current wave that present pre-ferred embodiments simulate to obtain.
Embodiment
Referring to Fig. 1 and Fig. 2, outer wall 1, outer layer that the structure of present pre-ferred embodiments includes being coaxially disposed from outside to inside are put
Electric module 2, secondary cylinder 3, internal layer discharge module 4 and inwall 5.Overall structure is in spoke-like, and a diameter of 2600mm of outer wall 1 is interior
A diameter of 500mm of wall 5, whole height 230mm.Outer layer discharge module 2 is mainly made up of 40 outer layer discharge paths 21, often
Individual outer layer discharge paths are fundamental frequency discharge paths.Internal layer discharge module 4 is mainly made up of 24 parallel connections of internal layer discharge paths 41,
It is triple-frequency harmonics branch road wherein to have 16 internal layer discharge paths, and it is quintuple harmonics branch road to have 8 internal layer discharge paths.
Referring to Fig. 3, the outer layer discharge module 2 of present pre-ferred embodiments includes the outer layer high pressure set gradually from the inside to the outside
Electrode retaining collar 22, outer layer magnetic core 23 and multiple outer layer discharge paths 21 parallel with one another, each outer layer discharge paths 21 are again by two
Capacitor 1 and a gas switch 1 form, and outer layer insulation 213 of upper, middle and lower three plays what is insulated and support
Effect.Underlying capacitor one is connected by an outer layer high-tension electricity polar ring 22 with lower earth plate 6, electric capacity above
Device one is connected by an outer layer high-tension electricity polar ring 22 with secondary cylinder 3, forms outer primary loop.Each capacitor 1 with
An outer layer magnetic core 23 is provided between outer layer high-tension electricity polar ring 22.The inside cavity of outer layer discharge module 2 is filled with transformation
Device oil uses gas to increase dielectric strength.
Internal layer discharge module 4 includes internal layer high-tension electricity polar ring 42, the internal layer magnetic core 43 and multiple set gradually from outside to inside
Internal layer discharge paths 41 parallel with one another, each internal layer discharge paths 41 are again by two capacitors 2 411 and a gas switch
2 412 compositions, primary insulation 413 of upper, middle and lower three play a part of insulating and supported.Capacitor two-way above
Cross an internal layer high-tension electricity polar ring 42 with upper earth plate 7 to be connected, underlying capacitor two passes through an internal layer high-field electrode
Ring 42 is connected with secondary cylinder 3, forms inner primary loop.Each it is all provided between capacitor 2 411 and internal layer high-tension electricity polar ring 42
It is equipped with an internal layer magnetic core 43.The inside cavity of internal layer discharge module 4 is filled with transformer oil or uses gas to increase insulation
Intensity.
Outer layer discharge module 2 and internal layer discharge module 4 share high pressure of the secondary cylinder 3 as driving source among the two
Output cylinder.The secondary lower end of cylinder 3 is connected with lower earth plate 6, is connected again with upper earth plate 7 after the connection load of upper end, inside and outside composition altogether
Middle secondary loop.Middle secondary loop uses vacuum or vacuum magnetic insulation.
The course of work of driving source of the present invention is as follows：All gas switch in outer layer discharge module 2 and internal layer discharge module 4
Both ends apply ± 100kV high direct voltages respectively, and capacitor is fully charged.After switch is triggered, the gas of all discharge paths of ectonexine
The synchronous breakdown closure of body switch.The electric current of 40 outer layer discharge paths 21 converges on outer layer high-tension electricity polar ring 22 and forms main pulse
Electric current, the electric current of 24 internal layer discharge paths 41, which is converged on internal layer high-tension electricity polar ring 42, forms harmonic wave regulation pulse current, and two
Electric current is superimposed the square wave current pulse to form amplitude at load.
In the preferred embodiment, all capacitors of outer layer discharge module 2 use 65nF/100kV plastic housings
Capacitor, capacitor sizes are 154mm × 250mm × 60mm, and discharge paths inductance is about 250nH.In internal layer discharge module 2,
The capacitor of triple-frequency harmonics branch road uses 12nF/100kV plastic housing capacitors, and capacitor sizes are 100mm × 150mm × 60mm,
Discharge paths inductance is about 150nH；The capacitor of quintuple harmonics branch road uses 8nF/50kV ceramic capacitors, discharge paths inductance
About 150nH.Outer layer magnetic core 23 and internal layer magnetic core 43 use the size of magnetic amorphous alloy material, wherein outer layer magnetic core 23
For Φ 1720mm × Φ 1600mm × 35mm, single magnetic core Flux consumption is 5.3mVs；The size of internal layer magnetic core 43 is Φ
1260mm × Φ 1220mm × 40mm, single magnetic core Flux consumption are 2mVs.
As the capacitor charging ± 100kV of driving source of the present invention, loaded using 2nH/0.1 Ω, all gas in discharge module
When body switch synchronously punctures, it is as shown in Figure 4 that breadboardin obtains output pulse current waveform.As a result show：Driving source of the present invention
Output current peak value be 1023kA, the rise time (10%~90%) is 34ns, and 80% flat-top width is 236ns.Module
Total energy storage 25.64kJ, the energy that load is transferred within the main pulse 400ns periods are 22.7kJ, and energy efficiency is up to 88.5%.
Claims (4)
- A kind of 1. square wave Linear transformer driver of double-layer coaxial structure, it is characterised in that：Including from outside to inside sequentially coaxially Outer layer discharge module, secondary cylinder and the internal layer discharge module of setting；Outer layer discharge module one end ground connection, the other end connect secondary cylinder, form outer layer fundamental frequency loop；Internal layer discharge module one end ground connection, the other end connect secondary cylinder, form internal layer harmonic wave regulating loop；Secondary cylinder one end ground connection, is grounded after other end connection load, forms outer layer fundamental frequency loop, internal layer harmonic wave regulating loop Common sparing；The outer layer discharge module include set gradually from the inside to the outside outer layer high-tension electricity polar ring, outer layer magnetic core and it is multiple mutually simultaneously The outer layer discharge paths of connection；The outer layer high-field electrode was connected after surrounding outer layer magnetic core with outer layer discharge paths；The internal layer discharge module include set gradually from outside to inside internal layer high-tension electricity polar ring, internal layer magnetic core and it is multiple mutually simultaneously The internal layer discharge paths of connection；The internal layer high-field electrode was connected after surrounding internal layer magnetic core with internal layer discharge paths.
- 2. the square wave Linear transformer driver of double-layer coaxial structure according to claim 1, it is characterised in that：It is described outer Layer discharge paths are fundamental frequency discharge paths；The internal layer discharge paths are that harmonic wave adjusts branch road.
- 3. the square wave Linear transformer driver of double-layer coaxial structure according to claim 2, it is characterised in that：It is each outer Layer discharge paths and internal layer discharge paths are exhausted by insulator including two capacitors and a gas switch, the capacitor Edge.
- 4. the square wave Linear transformer driver of double-layer coaxial structure according to claim 3, it is characterised in that：Outer layer is put Electric module and internal layer discharge module are insulated by transformer oil or gas medium；Middle secondary cylinder uses vacuum magnetic insulation.
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| CN201510600054.6A CN105227160B (en) | 2015-09-18 | 2015-09-18 | The square wave Linear transformer driver of double-layer coaxial structure |
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| CN201510600054.6A CN105227160B (en) | 2015-09-18 | 2015-09-18 | The square wave Linear transformer driver of double-layer coaxial structure |
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| CN105227160B true CN105227160B (en) | 2018-02-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106972841B (en) * | 2017-04-25 | 2023-07-07 | 中国工程物理研究院流体物理研究所 | Simplified pulse forming circuit and LTD module |
| CN110098760B (en) * | 2019-05-05 | 2020-04-21 | 西北核技术研究所 | FLTD device convenient to maintain and assembling method and maintaining method thereof |
| CN110311661B (en) * | 2019-07-17 | 2022-11-01 | 中国工程物理研究院应用电子学研究所 | Single-stage pulse power driving structure, device and driving source based on ceramic capacitor |
| CN110417379B (en) * | 2019-07-23 | 2023-03-21 | 西北核技术研究院 | Angular transmission device for pulse power source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102739201A (en) * | 2012-06-29 | 2012-10-17 | 西北核技术研究所 | Semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency |
| CN104135249A (en) * | 2014-07-24 | 2014-11-05 | 中国工程物理研究院流体物理研究所 | Mixed mode linear transformer drive source module |
| CN104467795A (en) * | 2014-10-24 | 2015-03-25 | 西北核技术研究所 | Multilevel series LTD driving source and synchronous trigger method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9602087B2 (en) * | 2012-06-22 | 2017-03-21 | Sandia Corporation | Linear transformer driver for pulse generation with fifth harmonic |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102739201A (en) * | 2012-06-29 | 2012-10-17 | 西北核技术研究所 | Semiconductor opening switch (SOS)-based ultra-wide spectrum pulse generator with 100 kHz pulse frequency |
| CN104135249A (en) * | 2014-07-24 | 2014-11-05 | 中国工程物理研究院流体物理研究所 | Mixed mode linear transformer drive source module |
| CN104467795A (en) * | 2014-10-24 | 2015-03-25 | 西北核技术研究所 | Multilevel series LTD driving source and synchronous trigger method thereof |
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