CN110855273A - Arc-shaped solid-state pulse forming line and design method thereof - Google Patents
Arc-shaped solid-state pulse forming line and design method thereof Download PDFInfo
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- CN110855273A CN110855273A CN201911335241.0A CN201911335241A CN110855273A CN 110855273 A CN110855273 A CN 110855273A CN 201911335241 A CN201911335241 A CN 201911335241A CN 110855273 A CN110855273 A CN 110855273A
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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
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Abstract
The invention discloses an arc-shaped solid-state pulse forming line and a design method thereof, wherein the pulse forming line at least comprises an upper arc-shaped metal plate, a lower arc-shaped metal plate and a plurality of ceramic capacitors, the ceramic capacitors are arranged between the upper arc-shaped metal plate and the lower arc-shaped metal plate side by side, and two ends of each ceramic capacitor are respectively and electrically connected with the upper arc-shaped metal plate and the lower arc-shaped metal plate; the upper arc-shaped metal plate is also provided with an upper metal plate charging port and an upper electrode head; the lower arc-shaped metal plate is also provided with a lower metal plate charging port and a lower electrode tip; the upper electrode tip and the lower electrode tip are staggered with each other and discharge upwards and downwards respectively. The device has the characteristics of small size and light weight, and the plurality of arc-shaped solid-state pulse forming lines are easy to combine to form a coaxial structure, so that the volume and the weight of the high-impedance high-voltage pulse generating device can be effectively reduced.
Description
Technical Field
The invention belongs to the technical field of pulse power, and particularly relates to an arc-shaped solid-state pulse forming line and a design method thereof.
Background
The pulse forming line is a technology for generating high-power electric pulses in the pulse power technology, and is widely used at home and abroad. In a large high-power or ultra-high-power pulse device, deionized water or transformer oil is generally used as an energy storage medium of a pulse forming line to bear megavolt working voltage and generate electric pulses with hundred nanosecond pulse widths, and the pulse forming line has a very large size, the length of the pulse forming line reaches several meters or even several tens of meters, and the weight of the pulse forming line reaches several tons.
The pulse forming line with the working voltage of tens of kilovolts generally adopts a solid insulating material as an energy storage medium, and is more convenient to use and maintain due to the absence of a liquid medium. However, in order to make the pulse power device have smaller volume and lighter weight, the pulse forming line energy storage medium is required to have higher energy storage density, larger dielectric coefficient and better structural design.
Disclosure of Invention
The invention aims to: in order to overcome the problems of the prior art, the arc-shaped solid pulse forming line and the design method thereof are provided, the ceramic capacitors are arranged along a semi-circular arc shape and form the pulse forming line with the upper metal plate and the lower metal plate, the arc-shaped solid pulse forming line has the characteristics of small size and light weight, the flat-top occupation ratio of square wave pulses generated by discharging is high, and the output voltage reaches dozens of kilovolts. And a plurality of arc-shaped solid-state pulse forming lines are easy to combine to form a coaxial structure, so that the volume and the weight of the high-voltage pulse generating device can be effectively reduced.
The purpose of the invention is realized by the following technical scheme:
an arc-shaped solid-state pulse forming line and a design method thereof are provided, wherein the pulse forming line at least comprises an upper arc-shaped metal plate, a lower arc-shaped metal plate and a plurality of ceramic capacitors, the ceramic capacitors are arranged between the upper arc-shaped metal plate and the lower arc-shaped metal plate side by side, and two ends of each ceramic capacitor are respectively and electrically connected with the upper arc-shaped metal plate and the lower arc-shaped metal plate; the upper arc-shaped metal plate is also provided with an upper metal plate charging port and an upper electrode head; the lower arc-shaped metal plate is also provided with a lower metal plate charging port and a lower electrode tip; the upper electrode tip and the lower electrode tip are staggered in the horizontal direction and discharge upwards and downwards respectively, wherein the height H of the ceramic capacitor, the width w and the center line length l of the upper arc-shaped metal plate and/or the lower arc-shaped metal plate, and the distance H between the upper arc-shaped metal plate and the lower arc-shaped metal plate are configured by the following method: step S1: according to the useCharacteristic impedance Z of subscriber-to-subscriber pulse forming line0Pulse width t0Calculating the capacitance C ═ Z of the storage capacitor0×t0(ii) a Step S2: according to the operating voltage U0Calculating the height h of the ceramic capacitor according to the capacitance C of the energy storage capacitor and the voltage withstanding property of the energy storage medium of the ceramic capacitor; step S3: then, the height H of the ceramic capacitor, the width w and the center line length 1 of the arc-shaped metal plate and the distance H between the upper electrode and the lower electrode are used for simulating and calculating to form the inductance L of the line; step S4: by
Calculating the characteristic impedance of the formed line, and setting parameters w, 1 and H to reach Z1＝Z0。
According to a preferred embodiment, each ceramic capacitor is arranged between the upper circular arc-shaped metal plate and the lower circular arc-shaped metal plate in a parallel connection manner.
According to a preferred embodiment, a switching device is disposed between the charging power source and the upper metal plate charging port or the lower metal plate charging port.
According to a preferred embodiment, a switching device is provided between the resistive load and the upper or lower electrode head.
According to a preferred embodiment, the resistive load is further provided with a load ground terminal electrode, and the load ground terminal electrode is grounded.
According to a preferred embodiment, the upper circular arc-shaped metal plate and the lower circular arc-shaped metal plate have the same plate body shape and size, and are made of copper plates.
According to a preferred embodiment, the arc angle of the upper and lower arc-shaped metal plates is set between 140 ° and 170 °. Preferably, the arc angle of the upper arc-shaped metal plate and the lower arc-shaped metal plate is set to 160 °.
According to a preferred embodiment, the outer arc radius of the upper arc-shaped metal plate or the lower arc-shaped metal plate is 142mm, the inner arc radius is 106mm, the center line arc length is 368mm, and the total thickness is 15.5 mm.
According to a preferred embodiment, the ceramic capacitors are arranged along the center line of the upper circular arc-shaped metal plate or the lower circular arc-shaped metal plate at intervals of 1mm to 2 mm.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that: through the structural design of the arc-shaped solid pulse forming line, the ceramic capacitors are arranged along the semi-arc shape to form the pulse forming line with the upper metal plate and the lower metal plate, and the characteristic impedance, the working voltage and the output pulse width of the formed line can be adjusted by adjusting parameters of the ceramic capacitors, the widths and the intervals of the upper copper plate and the lower copper plate, the length of the formed line and the like. The coaxial structure is easily formed by combining the plurality of arc-shaped solid-state pulse forming lines, and the height of the plurality of arc-shaped solid-state pulse forming lines in the stacking process can be reduced by the structural design that the upper electrode tip and the lower electrode tip are staggered with each other, so that the high-voltage pulse generating device is more compact, has smaller volume and lighter weight, and is suitable for the fields of development of compact high-impedance pulse power sources and other devices, high-voltage fast pulse application and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the circuit of the present invention;
the capacitor comprises an upper arc-shaped metal plate 1, a lower arc-shaped metal plate 2, a ceramic capacitor 3, an upper metal plate charging port 4, a lower metal plate charging port 5, an upper electrode head 6, a lower electrode head 7, a resistive load 8 and a load grounding end electrode 9.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, it should be noted that, in the present invention, if the specific structures, connection relationships, position relationships, power source relationships, and the like are not written in particular, the structures, connection relationships, position relationships, power source relationships, and the like related to the present invention can be known by those skilled in the art without creative work on the basis of the prior art.
Example 1:
referring to fig. 1, a circular arc shaped solid state pulse forming line and a method of designing the same are shown.
Specifically, the pulse forming line at least comprises an upper arc-shaped metal plate 1, a lower arc-shaped metal plate 2 and a plurality of ceramic capacitors 3. The ceramic capacitors 3 are arranged between the upper arc-shaped metal plate 1 and the lower arc-shaped metal plate 2 side by side. And the two ends of the ceramic capacitor 3 are respectively electrically connected with the upper arc-shaped metal plate 1 and the lower arc-shaped metal plate 2.
Preferably, each ceramic capacitor 3 is disposed between the upper circular arc-shaped metal plate 1 and the lower circular arc-shaped metal plate 2 in a parallel connection manner.
Preferably, the upper circular arc metal plate 1 and the lower circular arc metal plate 2 have the same plate body shape and size, and are formed by copper plates.
Preferably, the arc angle of the upper arc-shaped metal plate 1 and the lower arc-shaped metal plate 2 may be set between 140 ° and 170 °.
Further, in one embodiment, the arc angle of the upper arc-shaped metal plate 1 and the lower arc-shaped metal plate 2 is set to 160 °. And the outer arc radius of the upper arc-shaped metal plate 1 or the lower arc-shaped metal plate 2 is 142mm, the inner arc radius is 106mm, the center line arc length is 368mm, and the total thickness is 15.5 mm. The ceramic capacitor 3 is a barium titanate composite ceramic capacitor with 8 capacitances of 1.5 nF. The highest charging voltage can reach more than 60kV, square wave pulses with the pulse leading edge less than 5ns and the half-height width of 66ns are generated on a 2.4 omega impedance matching load, and the flat-top voltage is more than 30 kV.
Preferably, the ceramic capacitors are arranged along the center line of the upper circular arc-shaped metal plate or the lower circular arc-shaped metal plate at intervals of 1mm-2 mm.
Preferably, the upper circular arc-shaped metal plate 1 is further provided with an upper metal plate charging port 4 and an upper electrode head 6.
Preferably, the lower circular arc-shaped metal plate 2 is further provided with a lower metal plate charging port 5 and a lower electrode tip 7.
Preferably, when demonstrating how a single arc-shaped solid-state pulse forming line generates a high-voltage square-wave pulse, a charging power supply is arranged between the upper metal plate charging port 4 and the lower metal plate charging port 5. And the charging of the ceramic capacitor 3 between the upper arc-shaped metal plate 1 and the lower arc-shaped metal plate 2 is completed through the charging power supply. A switch device is arranged between the charging power supply and the upper metal plate charging port 4 or the lower metal plate charging port 5. Preferably, a resistive load 8 is provided between the upper electrode head 6 and the lower electrode head 7. A switch device is arranged between the resistance load 8 and the upper electrode head 6 or the lower electrode head 7. The release of the high voltage square wave pulses to the resistive load 8 is accomplished by the upper electrode head 6 and the lower electrode head 7. Further, the resistive load 8 is further provided with a load ground electrode 9, and is grounded through the load ground electrode 9.
As shown in fig. 2, a schematic diagram of the present pulse forming line circuit is also disclosed. In FIG. 1, U is a charging power supply, S1 is a charging switch, C1-Cn are n ceramic capacitors with the same capacitance, and L1-Ln are distributed inductances formed on arc-shaped electrodes; s2 is a discharge switch, RL is a discharge load.
Preferably, the ceramic capacitors C1 to Cn are connected in parallel across the charging power supply. And the discharge load RL is connected in parallel with each ceramic capacitor. When the switch S1 is closed and the switch S2 is opened, the charging of the capacitors is realized. When the switch S1 is opened and the switch S2 is closed, discharge to the discharge load is achieved.
Preferably, the design or preparation method of the arc-shaped solid-state pulse forming line comprises the following steps:
step S1: forming line characteristic impedance Z from user pair0Pulse width t0Calculating the capacitance C ═ Z of the storage capacitor0×t0。
Step S2: according to the operating voltage U0The capacitance C of the energy storage capacitor and the voltage withstanding characteristic of the energy storage medium of the ceramic capacitor, and the height h and the number of the ceramic capacitor are designed.
Step S3: and then the height H of the ceramic capacitor, the width w and the center line length L of the arc-shaped metal plate and the distance H between the upper electrode and the lower electrode or the upper arc-shaped metal plate and the lower arc-shaped metal plate are used for simulating and calculating to form the inductance L of the line.
Step S4: by
Calculating the characteristic impedance of the formed line, and adjusting w, l and H parameters to reach Z1＝Z0。
Preferably, the design also requires: the ceramic capacitors are arranged along the center line of the circular arc-shaped metal plate at intervals of 1mm-2 mm. Finally, the design parameters are optimized in the direction of reducing the dimension of the formed lines.
The pulse forming line of the invention uses ceramic capacitors with high energy storage density as energy storage units, a plurality of ceramic capacitors with the same capacitance are arranged along an arc line (less than 1/2 circles) and are connected with upper and lower arc metal plates (less than 1/2 circles), and the same ends of the upper and lower arc metal plates respectively extend out for a certain length along a certain direction to be used as discharge switch electrodes. The ceramic capacitor is charged through the upper arc metal plate and the lower arc metal plate, and the high-voltage square wave pulse is generated on the load after the discharge switch is switched on. Meanwhile, by adjusting parameters such as ceramic capacitor parameters, widths and intervals of the upper and lower copper plates, length of a formed wire and the like, characteristic impedance, working voltage, output pulse width and the like of the formed wire can be adjusted, the coaxial structure is easy to combine and form, and the volume and the weight of the high-voltage pulse generating device can be effectively reduced.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A circular arc solid pulse forming line and a design method thereof are characterized in that the pulse forming line at least comprises an upper circular arc metal plate (1), a lower circular arc metal plate (2) and a plurality of ceramic capacitors (3),
the ceramic capacitors (3) are arranged between the upper arc-shaped metal plate (1) and the lower arc-shaped metal plate (2) side by side, and two ends of each ceramic capacitor (3) are respectively and electrically connected with the upper arc-shaped metal plate (1) and the lower arc-shaped metal plate (2); an upper metal plate charging port (4) and an upper electrode head (6) are also arranged on the upper arc-shaped metal plate (1); a lower metal plate charging port (5) and a lower electrode tip (7) are further arranged on the lower arc-shaped metal plate (2); the upper electrode head (6) and the lower electrode head (7) are arranged in a staggered manner and discharge upwards and downwards respectively;
the height H of the ceramic capacitor (3), the width w and the center line length 1 of the upper arc-shaped metal plate (1) and/or the lower arc-shaped metal plate (2), and the distance H between the upper arc-shaped metal plate (1) and the lower arc-shaped metal plate (2) are configured by the following method:
step S1: forming line characteristic impedance Z from user pair pulse0Pulse width t0Calculating the capacitance C ═ Z of the storage capacitor0×t0；
Step S2: according to the operating voltage U0Calculating the height h of the ceramic capacitor according to the capacitance C of the energy storage capacitor and the voltage withstanding property of the energy storage medium of the ceramic capacitor;
step S3: then, the height H of the ceramic capacitor, the width w and the center line length L of the arc-shaped metal plate and the distance H between the upper electrode and the lower electrode are used for simulating and calculating to form the inductance L of the line;
step S4: by
Calculating the characteristic impedance of the formed line, and setting parameters w, l and H to reach Z1＝Z0。
2. The arc-shaped solid-state pulse forming line and the design method thereof according to claim 1, wherein each ceramic capacitor (3) is arranged between the upper arc-shaped metal plate (1) and the lower arc-shaped metal plate (2) in a parallel connection manner.
3. The arc-shaped solid-state pulse forming line and the design method thereof according to claim 1, wherein the upper arc-shaped metal plate (1) and the lower arc-shaped metal plate (2) have the same plate body shape and size and are made of copper plates;
the arc angle of the upper arc-shaped metal plate (1) and the lower arc-shaped metal plate (2) is set to be between 140 degrees and 170 degrees.
4. The arc-shaped solid-state pulse forming line and the design method thereof according to claim 1, wherein the electrode tips of the same end of the upper arc-shaped metal plate (1) and the lower arc-shaped metal plate (2) are horizontally staggered from each other.
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| CN201911335241.0A CN110855273A (en) | 2019-12-23 | 2019-12-23 | Arc-shaped solid-state pulse forming line and design method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113992191A (en) * | 2021-11-01 | 2022-01-28 | 中国工程物理研究院流体物理研究所 | Square wave pulse generation module and square wave pulse power source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113992191A (en) * | 2021-11-01 | 2022-01-28 | 中国工程物理研究院流体物理研究所 | Square wave pulse generation module and square wave pulse power source |
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