CN108631640A - A kind of pulsed drive source that output pulse width is variable - Google Patents
A kind of pulsed drive source that output pulse width is variable Download PDFInfo
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- CN108631640A CN108631640A CN201810448925.0A CN201810448925A CN108631640A CN 108631640 A CN108631640 A CN 108631640A CN 201810448925 A CN201810448925 A CN 201810448925A CN 108631640 A CN108631640 A CN 108631640A
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- inner cylinder
- line inner
- transmission line
- output pulse
- drive source
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/57—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a semiconductor device
Abstract
The invention discloses the pulsed drive sources that a kind of output pulse width can be changed, and include five pulse forming unit, main switch, pulse transmission unit, output diode, coaxial configuration magnetic switch parts successively.Wherein, coaxial configuration magnetic switch is parallel to output diode both ends, the output pulse width for adjusting diode both ends.The present invention solves the problems, such as that pulsed drive source cannot achieve output pulse width adjusting at this stage, and the application field for expanding pulsed drive source has important value.
Description
Technical field
The invention belongs to technical field of pulse power, are related to a kind of pulsed drive source that output pulse width is variable.
Background technology
High power pulse driving source is that a kind of device of pulsed electric power is exported for generating GW magnitudes, in practical application
In, it is typically used to generate the pulse with certain pulsewidth (or halfwidth).The mode for generating high power pulse is varied, example
Such as：Marx generators, pulse transformer (Pulse Transformer), pulse-forming line (Pulse Forming Line), arteries and veins
Punching forms network (Pulse Forming Network) and the intercombination between them.Its basic feature is device one
Constructed completion, output pulse width are exactly unique.
High power pulse driving source is widely used in military and civilian field, such as well known in driving high-power microwave source
Generating the application in strong electromagnetic pulse, and in Z-pinch technologies, detection and safety check, industrial production detection, material surface
The numerous areas of processing and other industrial and agricultural productions, which suffers from, to be widely applied.
It is its typical case in military field that driving, which generates High-Power Microwave, and high power pulse driving source is with tens of GW amounts
Grade electrical pulse energy be injected into high-power microwave source, driving generate INTENSE RELATIVISTIC ELECTRON BEAM, and after through beam wave phase interaction
With the High-Power Microwave of GW grades of number of output.
In civil field, by taking electric pulse crush method as an example.Electric pulse crush method is to utilize discharge spark channel in solid
The rapid expansion in portion, generates powerful pressure wave, structure is caused to be disintegrated.Applied to external treatment urinary calculus, gall stone, Yi Jicai
The regeneration treatment of material.Broken effect depends on energy in the accumulation of inside configuration, the duration close phase with discharge electric field
It closes, that is, depends on pulse width.
Preceding to have addressed, as high power pulse drives the development of source technology, application field is constantly expanded, and pulse width
It is an important technology index in practical application.It is limited to the structure and principle in conventional high power pulsed drive source, device is only
Has single output pulse width, this is greatly limited its scope of application.In the research of high-power microwave source, long pulse
(100ns or so) is all important research direction with short pulse (30ns or so), in actual operation, needs structure two completely
The high power pulse driving source of different scale will lead to great manpower, material resources and financial resources cost as its energy injecting mechanism；The people
With field also in this way, being limited to the single of high power pulse driving source output-index, practical function effect is difficult to obtain different ginsengs
Comparing result under several, and in order to obtain the effect in ideal, it will usually selection carries out device far above the parameter of threshold value
Design, causes rough development.
Invention content
Sing plus width, caused application cost height, model can only be exported in order to solve conventional high power pulsed drive source
Enclose small and the problem of ideal effect cannot be obtained, the present invention proposes a kind of high power arteries and veins for having output pulse width and being continuously adjusted ability
Driving source is rushed, based on existing high power pulse driving source, using in output end parallel connection coaxial configuration magnetic switch, and is based on magnetic core
Accurate resetting technique realizes being precisely controlled for output pulse width.Scientific research can not only be solved actually to ask with what is encountered in application
Topic, and for saving the energy, realizing that Green Development is equally significant.
Technical solution of the invention is to provide a kind of pulsed drive source that output pulse width is variable, including outer barrel, fixation
In the drive end bearing bracket and tail end cover at outer barrel both ends and along outer barrel length direction, the pulse-forming line in outer barrel is sequentially coaxially set
Inner cylinder and transmission line inner cylinder；Main switch cathode and main switch is respectively set in pulse-forming line inner cylinder and transmission line inner cylinder adjacent both ends
Diode cathode is arranged in the other end of anode, transmission line inner cylinder；It is characterized in that：Further include connecting cylinder and ring-shaped magnetic core group
Part；Above-mentioned connecting cylinder is good conductor；
Above-mentioned connecting cylinder is co-axially located at outer barrel and connecting cylinder open end contacts realization electrical connection, connection with drive end bearing bracket
Cylinder bottom is provided with the trepanning for making transmission line inner cylinder pass through, and transmission line inner cylinder makes diode cathode be located at connecting cylinder across the trepanning
Inner barrel；The drive end bearing bracket position opposite with diode cathode is equipped with diode anode；
Above-mentioned ring-shaped magnetic core assembly set is loaded on connecting cylinder, and the periphery of ring-shaped magnetic core component is contacted with outer tube inner wall.
Preferably, above-mentioned ring-shaped magnetic core component includes multiple ring-shaped magnetic cores being superimposed in an axial direction, between having between adjacent magnetic core
Gap.
Preferably, which further includes the insulation branch for being used to support pulse-forming line inner cylinder and transmission line inner cylinder
Support.
Preferably, above-mentioned insulating supporting be annular, it is multiple annular insulating supportings be located at outer barrel with formed line inner cylinder and
Between outer barrel and transmission line inner cylinder.
Preferably, main switch cathode is connected with line inner cylinder is formed by screw thread, main switch anode and diode cathode with
Transmission line inner cylinder is connected by screw thread.
Preferably, the diameter of transmission line inner cylinder is identical as the diameter of pulse-forming line inner cylinder.
Preferably, main switch cathode and main switch anode are ball electrode.
The magnetic switch that connecting cylinder, outer barrel and ring-shaped magnetic core component collectively form is parallel to diode cathode and diode anode
Both ends, formation line inner cylinder is carved at the beginning is filled with certain voltage, and after main switch conducting, one is exported between formation line inner/outer tube
The electric pulse for determining pulsewidth, the coaxial configuration formed through transmission line inner/outer tube are transmitted to diode cathode, diode cathode are caused to be sent out
Raw explosive emission, forms the strong current electron beam of certain pulsewidth；In ring-shaped magnetic core component unsaturation, diode strong current electron beam arteries and veins
Width is substantially equal to form the pulsewidth of line output；Ring-shaped magnetic core component is once be saturated, and diode is short-circuited extinguishing, and electric current is through connection
Cylinder is transmitted to drive end bearing bracket, realizes the adjusting to diode strong current electron beam pulsewidth；The saturation moment of ring-shaped magnetic core component depends on
The reset state of its own controls the reset state at the saturation moment itself of cyclic annular core assembly by resetting apparatus, different
Reset state will lead to different diode output pulse widths.
The beneficial effects of the invention are as follows：
1, the pulsed drive source of adjustable pulse width provided by the invention, output end cyclic annular core assembly in parallel, by adjusting magnetic
The mode of core reduction point, which is realized, adjusts output pulse width, has filled up the technological gap in existing pulsed drive source；
2, ring-shaped magnetic core component of the invention has extremely low pulsactor, can ensure to obtain good output impulse wave
Shape；
3, the present invention realizes the adjusting of output distinct pulse widths by way of adjusting magnetic core reduction point, is different from existing skill
Art route is by way of mechanically changing magnetic core winding the number of turns, which remote-controllable, need not carry out scene to device and tear open
Dress.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is one structural schematic diagram of embodiment.
Reference numeral is in figure：1- forms line outer barrel, and 2,4- form line inner cylinder insulating supporting, and 3- forms line inner cylinder, 5- master
Switch cathode, 6- main switch anodes, 7,9- transmission line inner cylinder insulating supportings, 8- transmission line inner cylinders, 10- connecting cylinders, 11- ring-type magnetic
Core assembly, 12- diode cathodes, 13- diode anodes, 14- main switch outer barrels, 15- transmission line outer barrels, 16- diode outer barrels,
17- drive end bearing brackets, 18- tail end covers.
Specific implementation mode
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
It will be seen from figure 1 that the present invention includes outer barrel, (outer barrel is divided into and to form line outer barrel 1, transmission line outer barrel 15, lead and open
Cylinder 14 and diode outer barrel 16 outside the Pass) tail end cover 18, line inner cylinder 3 is formed, line inner cylinder insulating supporting 2,4, main switch cathode are formed
5, main switch anode 6, transmission line inner cylinder 8, transmission line inner cylinder insulating supporting 7,9, diode cathode 12, diode anode 13, even
Connect cylinder 10, ring-shaped magnetic core component 11 and drive end bearing bracket 17；Drive end bearing bracket 17 and tail end cover 18 are located at the both ends of outer barrel, formed line inner cylinder 3,
Transmission line inner cylinder 8 is sequentially coaxially arranged by insulating supporting in outer barrel.
Main switch cathode 5 is threadedly attached in the one end to form line inner cylinder, and main switch anode 6 is threadedly attached in biography
One end of defeated line inner cylinder 8, diode cathode 12 are threadedly attached in the other end of transmission line inner cylinder 8, diode anode 13 with
Drive end bearing bracket 17 is electrically connected, and connecting cylinder 10 is electrically connected with drive end bearing bracket 17, and ring-shaped magnetic core component 11 is located at diode outer barrel 16 and connect
At the coaxial configuration of cylinder.
Above structure can be equivalent to (by formation line outer barrel 1, form line inner cylinder 3, tail including pulse forming unit A successively
End cap 18 forms 2,4 composition of line inner cylinder insulating supporting)；Main switch B is (by main switch outer barrel 14, main switch cathode 5, main switch sun
Pole 6 forms)；Pulse transmission unit C (is made of) transmission line outer barrel 15, transmission line inner cylinder 8, transmission line inner cylinder insulating supporting 7,9；
Output diode cells D (is made of) diode cathode 12, diode anode 13, drive end bearing bracket 17；Coaxial configuration magnetic switch E (by
Ring-shaped magnetic core component 11, diode outer barrel 16, connecting cylinder 10 form) totally five parts.
Operation principle is：Pulse forming unit A initial times are filled with certain voltage, and energy is stored in the form of electric field at this time
Between inner/outer tube, when charging voltage reaches main switch B breakdown voltages, main switch B conductings form the electric pulse of certain pulsewidth,
It is transmitted at output diode cells D through pulse transmission unit C, causes diode cathode that explosive emission occurs, generate high current electricity
Beamlet, and bombard onto diode anode.Strong current electron beam pulsewidth and formation line output pulse width are essentially identical.Coaxial configuration magnetic is opened
It closes E and is parallel to output diode cells D both ends, magnetic core is once be saturated, and diode is short-circuited extinguishing, and electric current is transmitted through connecting cylinder
To drive end bearing bracket, the adjusting to diode strong current electron beam pulsewidth is realized；The saturation moment of ring-shaped magnetic core component depends on its own
Reset state, the reset state at the saturation moment itself of magnetic core is controlled by resetting apparatus, different reset states will cause
Different diode output pulse widths.
Embodiment one
The pulsed drive source embodiment that the present invention is applied to 50-120ns pulse-width regulateds is described below.It is a kind of with reference to Fig. 2
The variable Tesla type pulsed drives source of output pulse width, 19 high-pressure side (left end) of taper Tesla transformers is the same as 3 phase of formation line inner cylinder
Even, transformer grounding end right end is connected with line outer barrel 1 is formed.
Glycerol medium is filled between pulse-forming line unit inner/outer tube, relative dielectric constant is about 43, forms line object
When reason length is 3m, electrical length can reach 120ns, which dictates that the upper limited pulse width that driving source can export.Line is formed to adopt
It is charged to it with the mode of built-in Tesla transformers.Line outer barrel internal diameter 400mm is formed, line inner cylinder outer diameter 150mm is formed,
It is about 10 ohm to form line output impedance.Main switch electrode form uses ball electrode, works in self breakdown pattern.Pulse is transmitted
Line parameter is identical as pulse-forming line structural parameters, the reflected impulse for isolating diode load.
The saturation of magnetic core depends on following formula：
Wherein charging voltage is Uc(t), the magnetic core saturation charging time is ts, herein, also export the width of pulse
Degree, SmIt is accumulated for core cross-section, Δ BmaxFor the maximum magnetic induction increment that magnetic core allows, value is equal to BsWith BrDifference, Bs
With BrThe respectively saturation induction density and residual magnetic flux density of magnetic material, N are the umber of turn on magnetic core, KTFor magnetic
Core fill factor.As can be seen that control Δ BmaxIt is to realize to tsControl direct method, by magnetic core resetting apparatus, it can be achieved that
To Δ BmaxAdjusting.Approximate reset pulse is triangular wave, and it is square wave that driving source, which exports pulse, is computed, it is assumed that resetting voltage is permanent
Determine 1kV, the constant 100kV of output voltage, the resetting time needed for different output pulse widths corresponds to situation such as table 1.
Resetting time needed for the different output pulse widths of table 1 corresponds to table
| Output pulse width | Resetting time |
| 50ns | 10μs |
| 60ns | 12μs |
| 70ns | 14μs |
| 80ns | 16μs |
| 90ns | 18μs |
| 100ns | 20μs |
| 110ns | 22μs |
| 120ns | 24μs |
It can be seen that the resetting time by controlling magnetic core, you can obtain different output pulse widths.Obviously, electricity is resetted by controlling
Pressure energy enough reaches same effect.Moreover, the resetting apparatus of low-voltage/s grades of tens of μ is more mature technology.
As can be seen that the high power pulse driving source that output pulse width is continuously adjusted has more importantly academic significance and reality
Border application value is the only way that Pulse Power Techniques further develop, and existing apparatus still cannot achieve in the performance
Breakthrough.
Claims (7)
1. a kind of variable pulsed drive source of output pulse width, including outer barrel, be fixed on outer barrel both ends drive end bearing bracket and tail end cover and
Along outer barrel length direction, the pulse-forming line inner cylinder and transmission line inner cylinder in outer barrel are sequentially coaxially set；In pulse-forming line
Main switch cathode and main switch anode, the other end setting two of transmission line inner cylinder is respectively set in cylinder and transmission line inner cylinder adjacent both ends
Pole pipe cathode；It is characterized in that：Further include connecting cylinder and ring-shaped magnetic core component；The connecting cylinder is good conductor；
The connecting cylinder is co-axially located at outer barrel and connecting cylinder open end contacts realization electrical connection, connecting cylinder bottom with drive end bearing bracket
Portion is provided with the trepanning for making transmission line inner cylinder pass through, and transmission line inner cylinder makes diode cathode be located at connecting cylinder cylinder across the trepanning
It is internal；The drive end bearing bracket position opposite with diode cathode is equipped with diode anode；
The ring-shaped magnetic core assembly set is loaded on connecting cylinder, and the periphery of ring-shaped magnetic core component is contacted with outer tube inner wall.
2. the variable pulsed drive source of output pulse width according to claim 1, it is characterised in that：The ring-shaped magnetic core component
Including multiple ring-shaped magnetic cores being superimposed in an axial direction, there is gap between adjacent magnetic core.
3. the variable pulsed drive source of output pulse width according to claim 2, it is characterised in that：Further include being used to support arteries and veins
Punching forms the insulating supporting of line inner cylinder and transmission line inner cylinder.
4. the variable pulsed drive source of output pulse width according to claim 3, it is characterised in that：The insulating supporting is ring
Shape, multiple annular insulating supportings are located at outer barrel and are formed in line between barrel and an external barrel and transmission line inner cylinder.
5. according to the variable pulsed drive source of any output pulse widths of claim 1-4, it is characterised in that：Main switch cathode
It is connected by screw thread with line inner cylinder is formed, main switch anode and diode cathode are connected with transmission line inner cylinder by screw thread.
6. the variable pulsed drive source of output pulse width according to claim 5, it is characterised in that：The diameter of transmission line inner cylinder
It is identical as the diameter of pulse-forming line inner cylinder.
7. according to the variable pulsed drive source of any output pulse widths of claim 1-4, it is characterised in that：Main switch cathode
And main switch anode is ball electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810448925.0A CN108631640B (en) | 2018-05-11 | 2018-05-11 | Pulse driving source with variable output pulse width |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810448925.0A CN108631640B (en) | 2018-05-11 | 2018-05-11 | Pulse driving source with variable output pulse width |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108631640A true CN108631640A (en) | 2018-10-09 |
| CN108631640B CN108631640B (en) | 2019-12-27 |
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| CN110164743A (en) * | 2019-05-30 | 2019-08-23 | 中国人民解放军国防科技大学 | Radial high-current electron beam composite type guiding magnetic field system |
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