CN203968082U - The nearly square wave apparatus for shaping of MV level - Google Patents
The nearly square wave apparatus for shaping of MV level Download PDFInfo
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- CN203968082U CN203968082U CN201420419423.2U CN201420419423U CN203968082U CN 203968082 U CN203968082 U CN 203968082U CN 201420419423 U CN201420419423 U CN 201420419423U CN 203968082 U CN203968082 U CN 203968082U
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- resistance
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- electric capacity
- inductance
- marx generator
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- 238000007493 shaping process Methods 0.000 title claims abstract description 26
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- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 241001270131 Agaricus moelleri Species 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000010355 oscillation Effects 0.000 abstract description 3
- 206010019133 Hangover Diseases 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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Abstract
The utility model discloses the nearly square wave apparatus for shaping of a kind of MV level, comprise Marx generator, between the high-voltage output end of described Marx generator and earth potential, be connected the series circuit being formed by electric capacity and resistance, and the series circuit that electric capacity and resistance form is in parallel with the series circuit of inductance and load composition.Output at existing Marx generator adds the L-C-R oscillation circuit being mainly comprised of inductance, electric capacity and resistance, makes Marx generator produce the function on high-tension basis with output square-wave pulse.After shaping, output voltage waveforms presents the flat-top of certain pulse duration, and energy conversion efficiency is not less than 60%, thereby reached, meets the requirement of load to its input high-voltage pulse waveform flat-top, improves the object of energy conversion efficiency simultaneously.
Description
Technical field
The utility model relates to shaping pulse field, particularly, relates to the nearly square wave apparatus for shaping of a kind of MV level.
Background technology
At present, in High pulse power technology, as the first accumulator, mostly adopt Marx generator, Marx generator can, under lower charging voltage, by voltage multiplication mode, produce the high-voltage pulse signal of megavolt magnitude.Actively develop the research of the fast rising front Marx of compact repetition rate generator correlation technique and application thereof both at home and abroad, and obtained good result.But its output waveform is typical overdamp electric discharge (RC electric discharge) waveform, and forward position is very fast, rear longer along hangover, almost there is no flat-top, can not be directly used in driving element, and energy loss is larger.
Utility model content
The purpose of this utility model is, for the problems referred to above, proposes the nearly square wave apparatus for shaping of a kind of MV level, to realize, meets the requirement of load to its input high-voltage pulse waveform flat-top, improves the advantage of energy conversion efficiency simultaneously.
For achieving the above object, the technical solution adopted in the utility model is:
The nearly square wave apparatus for shaping of a kind of MV level, comprise Marx generator, between the high-voltage output end of described Marx generator and earth potential, be connected the series circuit being formed by electric capacity and resistance, and the series circuit that electric capacity and resistance form is in parallel with the series circuit of inductance and load composition.
Further, described electric capacity adopts coaxial capacitance, the inductance that inductance adopts the long pitch helix of hollow to carry out coiling, and resistance adopts carbon film noninductive resistance.
Further, described resistance is that a plurality of carbon film noninductive resistances are in parallel.
The technical solution of the utility model has following beneficial effect:
The technical solution of the utility model, the main L-C-R oscillation circuit being comprised of inductance, electric capacity and resistance of output interpolation at existing Marx generator, makes Marx generator produce the function on high-tension basis with output square-wave pulse.After shaping, output voltage waveforms presents the flat-top of certain pulse duration, and energy conversion efficiency is not less than 60%, thereby reached, meets the requirement of load to its input high-voltage pulse waveform flat-top, improves the object of energy conversion efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the nearly square wave apparatus for shaping of the MV level electronic circuitry described in the utility model embodiment;
Fig. 2 is the pulse voltage waveform figure that Marx generator final stage directly connects load output;
Output voltage waveform in load when Fig. 3 is Marx generator final stage series connection different induction;
Output voltage waveform in load when Fig. 4 is Marx generator final stage different electric capacity in parallel;
Fig. 5 is output voltage waveform in load while connecting different resistance on shunt capacitance;
Fig. 6 is that inductance in the nearly square wave apparatus for shaping of MV level described in the utility model, electric capacity and resistance parameter are optimized output voltage waveform on back loading;
Fig. 7 is the nearly square wave apparatus for shaping of MV level described in the utility model three-dimensional structure schematic diagram.
By reference to the accompanying drawings, in the utility model embodiment, Reference numeral is as follows:
1-urceolus; Cylinder in 2-; 3-inductance; 4-inner core; 5-resistance.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for description and interpretation the utility model, and be not used in restriction the utility model.
The nearly square wave apparatus for shaping of a kind of MV level, comprise Marx generator, between the high-voltage output end of Marx generator and earth potential, be connected the series circuit being formed by electric capacity and resistance, and the series circuit that electric capacity and resistance form is in parallel with the series circuit of inductance and load composition.
Wherein, electric capacity adopts coaxial capacitance, the inductance that inductance adopts the long pitch helix of hollow to carry out coiling, and resistance adopts carbon film noninductive resistance.
Resistance is that a plurality of carbon film noninductive resistances are in parallel.
As shown in Figure 1,
be inductance,
for electric capacity,
for resistance,
for load represents microwave device.
total series equivalent capacitance during for the electric discharge of traditional MV level Marx generator,
the equivalent inductance of connecting during for the electric discharge of traditional MV level Marx generator, in dotted line frame, be the nearly squaring circuit of MV level additional between existing MV level Marx generator output end and earth potential, Fig. 2 is the typical RC discharge waveform that MV level Marx generator final stage directly connects load output, as can be seen from Figure 2, forward position is very fast, longer along hangover afterwards, waveform does not almost have flat-top.
For obtaining the MV level high-voltage pulse waveform that can directly drive the certain pulse flat-top width of having of High-Power Microwave device, in order to reduce experimental cost, the technical solution of the utility model adopts Pspice analog circuit software to carry out emulation to the nearly squaring circuit parameter of MV level in Fig. 1.Thereby the parameters in circuit is optimized.Fig. 3 is that in the nearly square wave apparatus for shaping of MV level of the present utility model, Marx generator final stage series inductance changes the impact on output voltage waveforms in load, and waveform peak voltage increases along with reducing of series inductance, and pulse flat-top will disappear thereupon.When series inductance is larger, pulse front edge slows down, and pulse flat-top width diminishes, and need choose match parameter according to load.Fig. 4 is output voltage waveforms in load during Marx generator final stage different electric capacity in parallel in the nearly square wave apparatus for shaping of MV level of the present utility model, when shunt capacitance increases to certain value, continue again to increase shunt capacitance, crest voltage is substantially constant, the time that just reaches crest voltage is elongated a little, impulse waveform changes little, and waveform is pulse sharp wave, there is no flat-top; Hour, there is vibration in pulse front edge to shunt capacitance, and shunt capacitance more small oscillation is more obvious, and pulse flat-top becomes not obvious.With series inductance to choose situation the same, need choose match parameter according to load.Fig. 5 is output voltage waveforms in load while connecting different resistance on shunt capacitance, and hour, ripple is larger for resistance, and along with the increase of resistance, the waveform cunning that flattens, continues to increase resistance, and flat-top width diminishes, and occurs steamed bun ripple.Fig. 6 is that inductance in the nearly square wave apparatus for shaping of MV level of the present utility model, electric capacity and resistance parameter are optimized output voltage waveforms on back loading, the typical RC discharge waveform contrast that is directly connected load output with Marx generator final stage in Fig. 2 can be found out, after shaping, output voltage waveforms presents the flat-top of certain pulse duration, and output crest voltage reduces to be about before the 73%(shaping of nearly square wave apparatus for shaping input voltage in technical solutions of the utility model), energy conversion efficiency is not less than 60%.
Fig. 7 is the nearly square wave apparatus for shaping of MV level of the present utility model three-dimensional structure schematic diagram.The withstand voltage MV magnitude that reaches, the electric capacity of the pico farad magnitude that capacitance is, if adopting lumped parameter electric capacity makes, volume weight is all huger, discontented pedal system miniaturization requirement, the coaxial configuration distributed capacitance that in the nearly square wave apparatus for shaping of MV level of the present utility model, Marx generator final stage shunt capacitance adopts in cylindrical shape, outer conductor forms, volume weight reduces greatly.In Project Realization process, MV level high voltage need be introduced from inner core, inevitably can between inner core and middle cylinder, introduce distributed constant electric capacity, due in, inner diameter of steel flue ratio is larger, the distributed capacitance forming is very little, less on output pulse waveform impact, can ignore.Between middle cylinder and urceolus, adopt the pure SF6 gas-insulated that strengthens nylon and be not less than 3atm, when field intensity is higher, nylon medium carries out cutting processing, surface insulation distance in increase, between urceolus; Resistance adopts many parallel connections of carbon film noninductive resistance, be connected between inner core and middle cylinder, on resistance, bear crest voltage and be about 25% of the nearly square wave apparatus for shaping of MV level input voltage in the utility model, voltage is relatively low, and resistance value is within the scope of tens ohm as can be known from Fig. 5, easily make, adopt many parallel waies also can increase average power; Inductance adopts the long pitch helix of hollow to carry out coiling, and one end connects inner core, and the other end connects load, bears MV level pulse voltage in series inductance, and design inductance straight length is not less than 150mm.
The mode of the nearly square wave apparatus for shaping of MV level described in the utility model and the pulse of existing generation high voltage square wave, time delay stack output square wave as in parallel in pulse forming line (PFL), pulse forming network (PFN) and multichannel Marx generator is compared, owing to having omitted transmission line unit and main switch, easier implementation structure compactness and miniaturization.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (3)
1. the nearly square wave apparatus for shaping of MV level, comprise Marx generator, it is characterized in that, between the high-voltage output end of described Marx generator and earth potential, be connected the series circuit being formed by electric capacity and resistance, and the series circuit that electric capacity and resistance form is in parallel with the series circuit of inductance and load composition.
2. the nearly square wave apparatus for shaping of MV level according to claim 1, is characterized in that, described electric capacity adopts coaxial configuration electric capacity, the inductance that inductance adopts the long pitch helix of hollow to carry out coiling, and resistance adopts carbon film noninductive resistance.
3. the nearly square wave apparatus for shaping of MV level according to claim 2, is characterized in that, described resistance is that a plurality of carbon film noninductive resistances are in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419423.2U CN203968082U (en) | 2014-07-28 | 2014-07-28 | The nearly square wave apparatus for shaping of MV level |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419423.2U CN203968082U (en) | 2014-07-28 | 2014-07-28 | The nearly square wave apparatus for shaping of MV level |
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| CN203968082U true CN203968082U (en) | 2014-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380712A (en) * | 2019-07-03 | 2019-10-25 | 西北核技术研究院 | The Pulsed current injection source circuit that Double exponential pulse high current amplitude continuously adjusts |
-
2014
- 2014-07-28 CN CN201420419423.2U patent/CN203968082U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380712A (en) * | 2019-07-03 | 2019-10-25 | 西北核技术研究院 | The Pulsed current injection source circuit that Double exponential pulse high current amplitude continuously adjusts |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20141126 |
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| CX01 | Expiry of patent term |