CN201294504Y - Complementary type pulse-forming network for generating high-voltage impulse - Google Patents
Complementary type pulse-forming network for generating high-voltage impulse Download PDFInfo
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- CN201294504Y CN201294504Y CNU2008202153675U CN200820215367U CN201294504Y CN 201294504 Y CN201294504 Y CN 201294504Y CN U2008202153675 U CNU2008202153675 U CN U2008202153675U CN 200820215367 U CN200820215367 U CN 200820215367U CN 201294504 Y CN201294504 Y CN 201294504Y
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Abstract
The utility model discloses a complementary type pulse-forming network used for generating high-tension pulse, which comprises a mutual induction type pulse-forming network and is characterized in that a discoupling pulse-forming network is arranged in the mutual induction type pulse-forming network, the input end and the output end of the discoupling pulse-forming network are connected with the input end and the output end of the mutual induction type pulse-forming network in parallel, and forms the complementary type pulse-forming network. The mutual induction type pulse-forming network is used through connecting with the discoupling pulse-forming network in parallel, a discoupling type PFN is used to compensate a mutual induction type PFN, and forms the mutual induction type pulse-forming network. Adopting the complementary type pulse-forming network and the debug method, the impedance of each group of the PFN is improved to reduce the effect of distribution parameter through controlling the pitch number of the PFN, and the inductance of an adjustable inducer is accurately adjusted, the adjustment has higher precision and is easy to operate. The complementary type pulse-forming network can conveniently reach the requirement of high quality of the pulse wave form, overcomes the difficulties which a line modulator is difficult to realize under the requirements of high power and high quality.
Description
Technical field
The utility model relates to the pulse power electronic applications, relates in particular to a kind of complementary pulse forming network that is used to produce high-voltage pulse.
Background technology
Pulse forming network (PFN) is the key component that produces high-voltage pulse.It is to adopt inductance, the electric capacity of lumped parameter to replace real transmission line, and the transient characterisitics when discharging by it in line-type modulator form rectangular pulse.The form of PFN has multiple, but most employing waits electric capacity on the engineering, and inductance is mutual inductance type or decoupling formula two class formations.
Mutual inductance type PFN equivalent electric circuit, as shown in Figure 3, inductance adopts even helix tube coiling, pulse waveform regulated is mainly by adjusting the number of turn of toroidal winding, because it is mutual coupling that spiral tube structure makes between every section inductance L, especially coupling coefficient very big (degree of coupling height) between the adjacent inductance, therefore during one section inductance L of every adjusting, the inductance value of adjacent segment alters a great deal, the change amount is wayward, and this comes the transmission line of simulate ideal with regard to being difficult to by every section adjustment of inductance, thereby is difficult to obtain high-quality impulse waveform, the PFN of this form is not that very high occasion can be used at the impulse waveform quality requirement, can satisfy the common engineering application demand.
At present, the pulse power field is developed towards direction more powerful, that the impulse waveform quality requirement is higher.These new trend all design PFN and have higher requirement.The impulse waveform quality is high more, just requires the capacitor C of lumped parameter, inductance L to approach true transmission line more, also just need increase the joint number of PFN as far as possible.But joint number is many more, and C is held in every economize on electricity, inductance L numerical value is just more little, and the influence of circuit distributed constant paired pulses waveform is just obvious more.Thereby, increase joint number in actual applications too much, there have not been much meanings to improving the impulse waveform quality.The raising of pulse power also causes similar problem: power is high more, and inductance parameters is more little, and the stray inductance at device wire place becomes very important part.
For adapting to the needs that current market development and properties of product improve, the PFN technology that research is advanced from the influence to waveform of control PFN joint number, reduction circuit distributed constant, improves the quality of impulse waveform, is the prior art technical issues that need to address.
The utility model content
Technical problem to be solved in the utility model is, in order to overcome the difficult point that prior art develops to high power, high impulse waveform quality direction, a kind of complementary pulse forming network and method that is used to produce high-voltage pulse is provided, realize the impedance matching of PFN and load to reach easy adjusting inductance value, simultaneously can reduce effects of distribution parameters, obtain high-quality impulse waveform, satisfy the demand of pulse power industry development.
For solving the problems of the technologies described above, the technical solution of the utility model is a kind of complementary pulse forming network that is used to produce high-voltage pulse, comprise the mutual inductance type pulse forming network, it is characterized in that: be provided with decoupling formula pulse forming network in the complementary pulse forming network, decoupling formula pulse forming network input, output and mutual inductance type pulse forming network input, output compose in parallel described complementary pulse forming network.With mutual inductance type pulse forming network and the use in parallel of decoupling formula pulse forming network, PFN compensates mutual inductance type PFN with the decoupling formula, forms complementary pulse forming network.
A kind of complementary pulse forming network that is used to produce high-voltage pulse, described mutual inductance type pulse forming network is made as identical joint number with decoupling formula pulse forming network, and inductance, capacitance parameter are identical.
A kind of complementary pulse forming network that is used to produce high-voltage pulse, described decoupling formula pulse forming network, comprise that the variable inductor identical with mutual inductance type pulse forming network joint number composes in series, the serial connection point of variable inductor is connected with decoupling formula pulse forming network output by capacitor C.
A kind of complementary pulse forming network that is used to produce high-voltage pulse, described variable inductor comprises coil, the cylindrical skeleton that is used for coil winding, cylindrical body, holder, insulated handle is formed, cylindrical skeleton be provided be used for fixing coil position etc. the inclination angle notch, coil is installed in the notch of inclination angle along axis direction, the length direction equal angles of cylindrical skeleton is provided with and is used to the strip hole that dispels the heat, be provided with the cylindrical body that can in cylindrical skeleton, move on the axis direction in the described cylindrical skeleton, one end of cylindrical body is provided with holder, and the end face that insulated handle passes cylindrical skeleton is connected with holder.
A kind of complementary pulse forming network that is used to produce high-voltage pulse, an end of described cylindrical skeleton is provided with the screw that screws of stationary magazine creel body.
A kind of complementary pulse forming network that is used to produce high-voltage pulse, described cylindrical body adopts metal material.
A kind of complementary pulse forming network that is used to produce high-voltage pulse, described cylindrical body adopts permeability magnetic material.
A kind of complementary pulse forming network that is used to produce high-voltage pulse, described cylindrical skeleton adopts polytetrafluoroethylmaterial material.
A kind of complementary pulse forming network that is used to produce high-voltage pulse, owing to adopt above-mentioned complementary pulse forming network, by control PFN joint number, the impedance that improves every group of PFN is to reduce effects of distribution parameters, accurately regulate the inductance value of variable inductor, regulate and get up to have higher accuracy and handiness, also can adopt the mode of insulation to realize charged adjusting inductance value.This complementary pulse forming network can conveniently reach high impulse waveform quality requirement, overcomes the difficulty that line-type modulator is difficult to realize under high power, high-quality requirement.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail;
Fig. 1 is a kind of complementary pulse forming network electrical block diagram that is used to produce high-voltage pulse of the utility model;
Fig. 2 is a variable inductor structural representation shown in Figure 1;
Fig. 3 is a mutual inductance type pulse forming network electrical block diagram shown in Figure 1;
In Fig. 1, Fig. 2,1, coil; 2, cylindrical skeleton; 3, cylindrical body; 4, holder; 5, insulated handle; 6, screw screw; 7, heat radiation strip hole; 8, inclination angle notch; 9, variable inductor; 10, mutual inductance type pulse forming network; 11, decoupling formula pulse forming network.
Embodiment
As shown in Figure 1, a kind of complementary pulse forming network that is used to produce high-voltage pulse, comprise mutual inductance type pulse forming network 10, be provided with decoupling formula pulse forming network 11 in the complementary pulse forming network, decoupling formula pulse forming network 11 inputs, output and mutual inductance type pulse forming network 10 inputs, output compose in parallel described complementary pulse forming network.Mutual inductance type pulse forming network 10 is made as identical joint number with decoupling formula pulse forming network 11, and inductance L, capacitor C parameter are identical.Described decoupling formula pulse forming network 11 comprises that the variable inductor 9 identical with mutual inductance type pulse forming network 10 joint numbers composes in series, and the serial connection point of variable inductor 9 is connected with decoupling formula pulse forming network 11 outputs by capacitor C.
Referring to Fig. 2, described variable inductor 9 comprises coil 1, the cylindrical skeleton 2 that is used for coil winding, cylindrical body 3, holder 4, insulated handle 5 is formed, cylindrical skeleton 2 be provided with the position that is used for fixing coil 1 etc. inclination angle notch 8, coil 1 is installed in the inclination angle notch 8 along axis direction, the length direction equal angles of cylindrical skeleton 2 is provided with and is used to dispel the heat strip hole 7, be provided with the cylindrical body 3 that can in cylindrical skeleton 2, move on the axis direction in the described cylindrical skeleton 2, one end of cylindrical body 3 is provided with holder 4, and the end face that insulated handle 5 passes cylindrical skeleton 2 is connected with holder 4.
Coil 1 evenly is wound on the skeleton 2 along axis direction, and skeleton 2 first-class inclination angle flutings 8 are used for fixing the position of coil 1.The length direction equal angles of cylindrical skeleton 2 is milled strip hole 7, is convenient to heat radiation.Cylindrical body 3 is loaded on cylindrical skeleton 2 inside, and its undersized can move on the axis direction of cylindrical skeleton 2 in the internal diameter of cylindrical skeleton 2.Holder 4 is used for being connected of cylindrical body 3 and insulated handle 5.The height decision of the length of insulated handle 5 voltage during by charged work is to guarantee human body safety.By insulated handle 5 cylindrical body 3, holder 4 are moved together along cylindrical skeleton 2 axis directions, what that the inductor current amount changes are the size of amount of movement determined.
Cylindrical skeleton 2 can adopt polytetrafluoroethylmaterial material, and inductance coil 1 can be used copper tube, and cylindrical body 3 adopts metal material, available aluminum pipe, the also available polytetrafluoroethylmaterial material of insulated handle 5.The scalable scope of cylindrical body 3 has determined the adjustable extent of inductance value, and cylindrical body 3 stretches into that coil 1 inside is many more, and the coil turn of conductively-closed is many more, and the actual inductance value that obtains is more little.Can set the maximum induction amount of coil 1 during design as required, select the flexible scope of cylindrical body 3 again, to limit the adjustable range of inductance value.This inductance assembles appropriate to the occasion horizontal positioned, is easy to the horizontal adjustment of insulated handle 5, and inductance value is fixing.
What one end of cylindrical skeleton 2 was provided with stationary magazine creel body 3 screws screw 6.Screw the control that screw 6 is used for inductance value coarse adjustment or fine tuning, and the fixing position of cylindrical body 3 at last.Revolve the adjustment on a large scale (coarse adjustment) that makes things convenient for inductance value when putting pine when screwing screw 6, revolve and put the accurate adjustment (fine tuning) that can realize inductance value when tight slightly.Inductance value regulate suitable after, further screw screw 6 with the fixing position of cylindrical body 3, fixed inductance amount.
Cylindrical body 3 adopts permeability magnetic material, and the appropriate section in other structure and the execution mode one is basic identical.But permeability magnetic material (as the magnetic flux piece) has changed the Principles of Regulation of inductance value, and it is many more that cylindrical body 3 stretches into coil inside, and actual to obtain inductance value big more.
With mutual inductance type pulse forming network 10 and 11 uses in parallel of decoupling formula pulse forming network, PFN compensates mutual inductance type PFN with the decoupling formula, form complementary pulse forming network, its operation principle is: at first produce a fair impulse waveform by mutual inductance type pulse forming network 10, remove to compensate waveform by the inductance parameters of regulating variable inductor 9 in the decoupling formula pulse forming network 11 then, two just synthetic impulse waveforms that are of high quality of pulse forming network waveform have so just been avoided the not high shortcoming of mutual inductance type PFN degree of regulation.In side circuit, the electric capacity of lumped parameter and inductance can bring distributed capacitance and distributed inductance, wherein the influence of distributed capacitance can be avoided by the flying capacitor shell, but the distributed inductance that lead-in wire produced of electric capacity and inductance can't overcome, and after adopting the pulse forming network of parallel form, impedance doubles, inductance can increase, the influence of distributed inductance paired pulses waveform has just reduced, and it is adjustable adding inductance, and lead-in inductance can be included in the lumped parameter and consider like this.
During engineering is used, in order to reach high impulse waveform quality requirement, usually the pulse forming network that need use tens joints approaches real transmission line, every economize on electricity sense L, capacitor C parameter are very little, when its little to its distributed capacitance that in circuit, is brought and distributed inductance magnitude near the time, distributed constant can greatly influence the PFN lumped parameter, even can form resonant tank with lumped parameter, clutter is superimposed upon on the impulse waveform, makes the impulse waveform of actual needs can't reach high index request.Increase the PFN joint number simply and do not had practical significance improving the impulse waveform index.In this case, adopt complementary pulse forming network of the present utility model, by control PFN joint number, the impedance that improves every group of PFN is accurately regulated inductance value to reduce effects of distribution parameters, can conveniently reach high impulse waveform quality requirement.
Complementary PFN execution mode of the present utility model generally can be designed to same progression with mutual inductance type PFN and decoupling formula PFN, inductance L, capacitor C parameter unanimity, and two groups of PFN volumes, weight are suitable, are convenient to layout and installation.Difference only is the design and the manufacturing process of inductance.Mutual inductance type PFN inductance generally be with coil winding on a long helix skeleton, middle appropriate location is provided with tap inductance value has been divided into approximately equalised a few joint, is by regulating the number of turn of every economize on electricity sense coil when regulating inductance value.Decoupling formula inductance can flexible design, generally can adopt independent tubular structure, regulates and gets up to have higher accuracy and handiness, also can adopt the mode of insulation to realize charged adjusting inductance value.
Introduce the PFN design of a kind of typical high power, high quality pulses waveform modulated device below, the utility model is not limited to this design.
If the known load impedance is 4 Ω, PFN operating voltage 45kV, pulse duration (50%) requires 7 μ S, top fluctuation requirement＜± 0.05%.Complementary PFN is adopted in design, and mutual inductance type is in parallel with two groups of decoupling formulas, every group of PFN equiva lent impedance ρ 1=ρ 2=8 Ω.Design every group of PFN total capacitance 0.44 μ F, total inductance amount 28 μ H.If get 10 grades of then every grade of capacitance 0.04 μ F, every economize on electricity sensibility reciprocal 2.8 μ H.
The capacitor actual size of designing by this requirement is 205mm * 155mm * 410mm, and the high 215mm of exit insulator is easy to produce and product is installed.Compare with high-voltage capacitance, the manufacture difficulty of PFN inductance is lower, two kinds of PFN inductance adopt different process: the inductance of mutual inductance type PFN adopts a long epoxy cylindrical skeleton, copper pipe (coil) is evenly coiling on the cylindrical skeleton length direction, the length direction equal angles of cylindrical skeleton is milled strip hole, so that heat radiation and link folder, the inductance value that the position of adjusting binding clip can the every economize on electricity sense of coarse adjustment; The inductance of decoupling formula PFN, skeleton adopts polytetrafluoroethylene, and electric conducting material links to each other with handle in the inductance coil copper pipe, skeleton, regulates the length that electric conducting material stretches into coil inside by handle, can accurately regulate inductance value.
Complementary PFN of the present utility model, when reducing the influence of circuit distributed constant, the mode that can combine with coarse adjustment, fine tuning obtains high-quality impulse waveform fast.At present, adopt the product of this mode, pulse front edge can be reduced to less than 1 μ s by 1～2 μ s, pulse back edge is reduced to less than 2 μ s by 3～6 μ s, the fluctuation of pulse flat-top is less than ± 0.05%, and shake less than 10ns in the forward position, has obtained the high-voltage pulse waveform of high-quality high target.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection range of the present utility model.
Claims (8)
1, a kind of complementary pulse forming network that is used to produce high-voltage pulse, comprise mutual inductance type pulse forming network (10), it is characterized in that: be provided with decoupling formula pulse forming network (11) in the complementary pulse forming network, decoupling formula pulse forming network (11) input, output and mutual inductance type pulse forming network (10) input, output compose in parallel described complementary pulse forming network.
2, a kind of complementary pulse forming network that is used to produce high-voltage pulse according to claim 1, it is characterized in that: described mutual inductance type pulse forming network (10) is made as identical joint number with decoupling formula pulse forming network (11), and inductance, capacitance parameter are identical.
3, a kind of complementary pulse forming network that is used to produce high-voltage pulse according to claim 1 and 2, it is characterized in that: described decoupling formula pulse forming network (11), comprise that the variable inductor (9) identical with mutual inductance type pulse forming network (10) joint number composes in series, the serial connection point of variable inductor (9) is connected with decoupling formula pulse forming network (11) output by capacitor (C).
4, a kind of complementary pulse forming network that is used to produce high-voltage pulse according to claim 3, it is characterized in that: described variable inductor (9) comprises coil (1), the cylindrical skeleton (2) that is used for coil winding, cylindrical body (3), holder (4), insulated handle (5) is formed, cylindrical skeleton (2) be provided be used for fixing coil (1) position etc. inclination angle notch (8), coil 1 is installed in the inclination angle notch (8) along axis direction, the length direction equal angles of cylindrical skeleton (2) is provided with and is used to dispel the heat strip hole (7), be provided with the cylindrical body (3) that can in cylindrical skeleton (2), move on the axis direction in the described cylindrical skeleton (2), one end of cylindrical body (3) is provided with holder (4), and the end face that insulated handle (5) passes cylindrical skeleton (2) is connected with holder (4).
5, a kind of complementary pulse forming network that is used to produce high-voltage pulse according to claim 4 is characterized in that: what an end of described cylindrical skeleton (2) was provided with stationary magazine creel body (3) screws screw (6).
6, a kind of complementary pulse forming network that is used to produce high-voltage pulse according to claim 4 is characterized in that: described cylindrical body (3) adopts metal material.
7, a kind of complementary pulse forming network that is used to produce high-voltage pulse according to claim 4 is characterized in that: described cylindrical body (3) adopts permeability magnetic material.
8, according to claim 4 or 5 described a kind of complementary pulse forming networks that are used to produce high-voltage pulse, it is characterized in that: described cylindrical skeleton (2) adopts polytetrafluoroethylmaterial material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202153675U CN201294504Y (en) | 2008-11-27 | 2008-11-27 | Complementary type pulse-forming network for generating high-voltage impulse |
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| CNU2008202153675U CN201294504Y (en) | 2008-11-27 | 2008-11-27 | Complementary type pulse-forming network for generating high-voltage impulse |
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| CN201294504Y true CN201294504Y (en) | 2009-08-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819851A (en) * | 2010-05-07 | 2010-09-01 | 华中科技大学 | Protective inducer for capacitor bank and manufacturing method thereof |
| CN103236828A (en) * | 2013-04-28 | 2013-08-07 | 中国工程物理研究院应用电子学研究所 | Pulse forming network based on double-capacitor structure |
-
2008
- 2008-11-27 CN CNU2008202153675U patent/CN201294504Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819851A (en) * | 2010-05-07 | 2010-09-01 | 华中科技大学 | Protective inducer for capacitor bank and manufacturing method thereof |
| CN103236828A (en) * | 2013-04-28 | 2013-08-07 | 中国工程物理研究院应用电子学研究所 | Pulse forming network based on double-capacitor structure |
| CN103236828B (en) * | 2013-04-28 | 2016-03-02 | 中国工程物理研究院应用电子学研究所 | A kind of pulse forming network based on two capacitance structure |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20161127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |