CN106972841A - A kind of simplified pulse shaping circuit and LTD modules - Google Patents
A kind of simplified pulse shaping circuit and LTD modules Download PDFInfo
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- CN106972841A CN106972841A CN201710277203.9A CN201710277203A CN106972841A CN 106972841 A CN106972841 A CN 106972841A CN 201710277203 A CN201710277203 A CN 201710277203A CN 106972841 A CN106972841 A CN 106972841A
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- electric capacity
- wave electric
- pulse shaping
- modules
- fundamental wave
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The invention discloses a kind of simplified pulse shaping circuit and LTD module, the circuit includes：Two fundamental wave electric capacity, two harmonic wave electric capacity, one switch, wherein, each fundamental wave electric capacity and the parallel connection of a corresponding harmonic wave electric capacity constitute a group capacitor, first group capacitor one end is grounded, the first group capacitor other end is connected with the one end switched, the other end of switch is connected with second group capacitor one end, the second group capacitor other end is grounded, solve existing square wave LTD spatial designs unreasonable, number of switches is more, the high technical problem of the big cost of scale, realize and simplify pulse shaping circuit and LTD modules, so that LTD modular structures are simply compact, number of switches is less, cost is relatively low, ensure the technique effect of operational reliability.
Description
Technical field
The present invention relates to Pulse Power Techniques research field, in particular it relates to a kind of simplified pulse shaping circuit and LTD moulds
Block.
Background technology
Pulse Power Techniques are the skills that very high power electric pulse is produced by the compression by energy over time and space
Art.Straight line transformation driving source (Linear Transformer Driver, LTD) is Russian high current electronics research institute (High
Current Electronics Institute, HCEI) invention a kind of novel pulse power technology, the core of its technology is：
In parallel by by the larger storage capacitor of capacity " breaking the whole up into parts ", being divided into the less capacitor of many capacity, each capacitor is matched somebody with somebody
Independent switch is put, many basic discharge cells in parallel are constituted, the discharge cycle of each basic discharge cell is very short, Ke Yizhi
Practice midwifery the pulse of raw fast rise time, it is not necessary to the pulse compression network of traditional pulse power technology bulky complex.By multiple basic
The module that composes in parallel of discharge cell exports high current, then the series connection output HIGH voltage for passing through multiple modules.
LTD circuit is substantially a RLC oscillating circuits, current rise time τ~(LC)1/2.When shortening electric current rising
Between, it is necessary to reduce LC product.Reduce inductance near limit and potentiality are very small by optimizing switch, capacitor and loop design；
And to ensure certain energy storage, on the premise of charging voltage is not improved, electric capacity C can not be too small.For solve this problem do as
It is lower to consider：Capacitor C is when charging voltage is U, and energy storage is：
Capacitor is by switch discharge, if the interior inductance of capacitor is Lc, switched inductors are Ls, then current rise time be：
C is divided into n equal portions, each small capacitor capacitance is C/n, and each small capacitor is put by independent switch
Electricity.Because capacitor internal uses noninductive winding, its interior inductance depends primarily on the structure of extraction electrode, will not subtract because of capacitance
It is small and increase, tentatively it is set still as Lc；Ignore change of the switch flame path inductance with size of current, if it is still Ls, then electric current
Rise time is：
Now total energy storage is
It can be seen that, total energy storage is unchanged, and current rise time is reduced to original n-1/2.Electric capacity " is broken the whole up into parts ", electric current
Confluxed by multiple switch multi-channel parallel, substantially reduce the corresponding inductance of specific capacitance amount, here it is LTD fast pulse is defeated
Go out principle.
Pulse Power Techniques many important applied fields, it is necessary to square-wave pulse.Although LTD technologies can be produced directly
Fast rise time pulse, and device volume is smaller, but its technology based on capacitor discharge can only produce similar sinusoidal waveform (figure
2), it is impossible to produce approximate square waves pulse.In recent years, Russian HCEI Kim propositions are a kind of can produce the LTD skills of approximate square waves
Art, its principle is that multiple basic discharge cells in LTD modules are divided into two classes, and a class is that there is provided output pulse for fundamental wave unit
Main energetic, a class be harmonic wave branch road, the pulse of faster cycle of oscillation can be produced, discharged substantially by rationally designing two classes
The electrical parameter of unit, and the number of the basic discharge cell of the class of reasonable disposition two, two classes basic discharge cell theoretical according to Fourier
The pulse of output can be superposed to approximate square-wave pulse.
Existing square wave LTD technologies need independent harmonic wave unit, the discharge cell capacitor very little, to output pulse tribute
The energy very little offered, but occupies same space, and need independent switch.Such configuration is unfavorable for the utilization in space, and
Largely it is the increase in the quantity of switch.The increase of number of switches makes unit scale and cost increase, simultaneously so that system is multiple
Miscellaneous degree increase, operational reliability declines.Because all switches are required to external trigger in LTD, the increase of number of switches is directly led
The raising to triggering system specifications is caused, the technical difficulty and complexity of triggering system is added.
The content of the invention
The invention provides a kind of simplified pulse shaping circuit and LTD module, existing square wave LTD spatial designs are solved
Unreasonable, number of switches is more, the high technical problem of the big cost of scale, realizes and simplifies pulse shaping circuit and LTD modules,
So that LTD modular structures are simply compact, number of switches is less, and cost is relatively low, ensures the technique effect of operational reliability.
In order to solve the above technical problems, this application provides a kind of simplified pulse shaping circuit, the circuit includes：
Two fundamental wave electric capacity, two harmonic wave electric capacity, a switches, wherein, each fundamental wave electric capacity and a corresponding harmonic wave
Electric capacity parallel connection constitutes a group capacitor, and first group capacitor one end ground connection, one end of the first group capacitor other end and switch connects
Connect, the other end of switch is connected with second group capacitor one end, second group capacitor other end ground connection.
Simplified pulse shaping circuit, its general principle is based on Fourier's harmonic superposition, and the pulse shaping circuit is only included
Fundamental wave branch road and first harmonic branch road, eliminate all higher hamonic wave branch roads, in the framework based on fundamental wave and first harmonic superposition
Under, by adjusting the trickle parameter of fundamental wave and first harmonic, realize the purpose that approximate square waves are exported under certain loading condition.
Technical scheme in the application produces primary square-wave pulse, adopted using simplified pulse shaping circuit as elementary cell
Power superposition is carried out with the circuit frame of traditional line transformation driving source, the high power electrical pulse of approximate square waves is produced；Advantage is
Circuit is simple, and required switch number is few, it is possible to increase operational reliability.
Further, fundamental wave electric capacity and the parallel connection of corresponding harmonic wave electric capacity are grounded after being connected with load.
Further, present invention also provides a kind of LTD modules, the LTD modules are as the arteries and veins described in multiple claims 1
Punching forms circuit in parallel composition, and the output head anode of all pulse shaping circuits connects the output head anode of LTD modules, all arteries and veins
Punching forms the negative pole of output end of the negative pole of output end connection LTD modules of circuit.
Further, the arrangement of multiple pulse shaping circuits is in spoke-like, and is arranged according to even circumferential.Mainly due to
Secondary need to use the transmission line of coaxial configuration, and primary is arranged only so just can make the structural parameters of each branch road identical, simultaneously
Make structure inductance minimum.
This application provides based on the square wave LTD for simplifying pulse shaping circuit, a kind of pulse form of new simplification is utilized
Replace the basic discharge cell in aforementioned conventional LTD into circuit, the pulse shaping circuit fundamental wave electric capacity of this new simplification and
Harmonic wave electric capacity is directly in parallel, and shares same switch discharge, can directly export approximate square waves pulse.Each basic electric discharge is single
Member only comprising a switch, does not increase switch number and system complexity.
One or more technical schemes that the application is provided, have at least the following technical effects or advantages：
Solve that existing square wave LTD spatial designs are unreasonable, number of switches is more, and the high technology of the big cost of scale is asked
Topic, realizes and simplifies pulse shaping circuit and LTD modules so that LTD modular structures are simply compact, and number of switches is less, into
This is relatively low, ensures the technique effect of operational reliability.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 is LTD circuit theory schematic diagrams in the application；
Fig. 2 is the sinusoidal wave shape schematic diagram of traditional LTD outputs；
Fig. 3 is the basic discharge cell circuit diagram based on simplified pulse shaping circuit in the application；
Fig. 4 a-b are LTD module composition schematic diagrames in the application；
Fig. 5 is LTD module simulation output waveform diagrams in the application.
Embodiment
The invention provides a kind of simplified pulse shaping circuit and LTD module, existing square wave LTD spatial designs are solved
Unreasonable, number of switches is more, the high technical problem of the big cost of scale, realizes and simplifies pulse shaping circuit and LTD modules,
So that LTD modular structures are simply compact, number of switches is less, and cost is relatively low, ensures the technique effect of operational reliability.
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
Implemented with the other modes in the range of being different from being described herein using other, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
The core of the present invention is basic in the pulse shaping circuit substitution aforementioned conventional LTD using a kind of new simplification
Discharge cell, the pulse shaping circuit of this new simplification includes two fundamental wave electric capacity and two harmonic wave electric capacity, wherein each
The parallel connection of fundamental wave electric capacity harmonic electric capacity constitutes one group, and two group capacitors and one switch discharge loop in series, can be direct
Export approximate square waves pulse.LTD modules are built by multiple basic discharge cell parallel connections, because each basic discharge cell is only wrapped
Containing a switch, this LTD modules, which can export square wave, does not increase switch number and system complexity but.Based on simplified arteries and veins
Punching forms the basic discharge cell circuit diagram of circuit as shown in figure 3, C, R in figurecAnd LcIt is sequentially connected in series expression fundamental wave electric capacity, wherein C
For the capacitance of fundamental wave electric capacity, RcFor the internal resistance of fundamental wave electric capacity, LcFor the endophyte inductance of fundamental wave electric capacity；C1、Rc1And Lc1According to
Secondary series connection represents harmonic wave electric capacity, wherein C1For the capacitance of harmonic wave electric capacity, Rc1For the internal resistance of harmonic wave electric capacity, Lc1For harmonic wave electric capacity
Endophyte inductance；S and two LsSeries connection represents switch, and wherein S is the conducting control of switch, LsFor the inductance of switch；LloadFor
The stray inductance of load.Connected mode is：Fundamental wave electric capacity (C, RcAnd LcIt is sequentially connected in series) and harmonic wave electric capacity (C1、Rc1And Lc1Successively
Series connection) it is in parallel；LeFor the connection inductance between fundamental wave electric capacity harmonic electric capacity.LbFor fundamental wave electric capacity harmonic electric capacity it is in parallel after with
Connection inductance between load and ground；Two group capacitors (being formed in parallel respectively by a fundamental wave electric capacity and a harmonic wave electric capacity) with
Switch (Ls, S and LsIt is sequentially connected in series expression) one in series complete fundamental wave discharge cell.
LTD inside modules are constituted as shown in figure 4, corresponded to 2 fundamental wave electric capacity and 2 harmonic wave electric capacity for a switch, figure
4a is side cutaway view, it is seen that each side a fundamental wave electric capacity and a harmonic wave electric capacity；Fig. 4 b are top view, be can only see
The fundamental wave electric capacity harmonic electric capacity of side, the rank electric capacity harmonic electric capacity of opposite side is invisible in underface；Fig. 4 a left sides are to cut open
Face figure, the connected mode of the component such as display LTD inside modules switch and capacitor, a fundamental wave capacitor and a harmonic wave electricity
Container parallel connection is one group, and then one group capacitor+group capacitor of switch+one is sequentially connected in series, and constitutes a basic discharge paths；Figure
4b is LTD module top views, shows that multiple (this example is 10) basic discharge paths compose in parallel the mode of a LTD module,
Multiple basic discharge paths are in spoke-like circumferential arrangement, and the output head anode of all basic discharge paths connects the defeated of LTD modules
Go out proper pole, the negative pole of output end of all basic discharge paths connects the negative pole of output end of LTD modules.Simulation output waveform is as schemed
Shown in 5.
Simulation output waveform is different from simple as shown in figure 5, the voltage waveform substantially with square-wave characteristic can be exported
The sinusoidal wave shape of RLC electric discharges.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
Solve that existing square wave LTD spatial designs are unreasonable, number of switches is more, and the high technology of the big cost of scale is asked
Topic, realizes and simplifies pulse shaping circuit and LTD modules so that LTD modular structures are simply compact, and number of switches is less, into
This is relatively low, ensures the technique effect of operational reliability.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (5)
1. a kind of simplified pulse shaping circuit, it is characterised in that the circuit includes：
Two fundamental wave electric capacity, two harmonic wave electric capacity, a switches, wherein, each fundamental wave electric capacity and a corresponding harmonic wave electric capacity
Parallel connection constitutes a group capacitor, first group capacitor one end connection circuit positive output end, the first group capacitor other end and switch
One end connection, the other end of switch is connected with second group capacitor one end, the second group capacitor other end connect circuit bear it is defeated
Go out end.
2. simplified pulse shaping circuit according to claim 1, it is characterised in that fundamental wave electric capacity and corresponding harmonic wave electric capacity
Parallel connection is grounded after being connected with load.
3. simplified pulse shaping circuit according to claim 1, it is characterised in that C, RcAnd LcIt is sequentially connected in series fundamental wave
Electric capacity, wherein, C is the capacitance of fundamental wave electric capacity, RcFor the internal resistance of fundamental wave electric capacity, LcFor the endophyte inductance of fundamental wave electric capacity；
C1、Rc1And Lc1Harmonic wave electric capacity is sequentially connected in series, wherein, C1For the capacitance of harmonic wave electric capacity, Rc1For the internal resistance of harmonic wave electric capacity,
Lc1For the endophyte inductance of harmonic wave electric capacity.
4. a kind of LTD modules, it is characterised in that the LTD modules are in parallel as the pulse shaping circuit described in multiple claims 1
Composition, the output head anode of all pulse shaping circuits connects the output head anode of LTD modules, all pulse shaping circuits it is defeated
Go out to hold negative pole to connect the negative pole of output end of LTD modules.
5. LTD modules according to claim 4, it is characterised in that the arrangement of multiple pulse shaping circuits is in spoke-like, and
Arranged according to even circumferential.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710277203.9A CN106972841B (en) | 2017-04-25 | 2017-04-25 | Simplified pulse forming circuit and LTD module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710277203.9A CN106972841B (en) | 2017-04-25 | 2017-04-25 | Simplified pulse forming circuit and LTD module |
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| CN106972841A true CN106972841A (en) | 2017-07-21 |
| CN106972841B CN106972841B (en) | 2023-07-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845371A (en) * | 2017-10-12 | 2018-03-27 | 深圳市华星光电技术有限公司 | Power management integrated circuit and liquid crystal panel |
| CN110287568A (en) * | 2019-06-18 | 2019-09-27 | 中国工程物理研究院应用电子学研究所 | Hundred nanosecond trapezoidal wave pulse forming networks of one kind and design method |
| CN110311661A (en) * | 2019-07-17 | 2019-10-08 | 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 condenser |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB181047A (en) * | 1921-01-19 | 1922-05-19 | Oscar Christian Roos | Improvements in electromagnetic-wave transmitting systems |
| GB1304433A (en) * | 1969-05-05 | 1973-01-24 | ||
| JP2004312498A (en) * | 2003-04-09 | 2004-11-04 | Hitachi Metals Ltd | Low-pass filter and high-frequency switch using the same |
| JP2007088617A (en) * | 2005-09-20 | 2007-04-05 | Mitsubishi Electric Corp | Feedforward amplifier |
| CN105227160A (en) * | 2015-09-18 | 2016-01-06 | 西北核技术研究所 | The square wave Linear transformer driver of double-layer coaxial structure |
| CN206698197U (en) * | 2017-04-25 | 2017-12-01 | 中国工程物理研究院流体物理研究所 | A kind of pulse shaping circuit and LTD module |
-
2017
- 2017-04-25 CN CN201710277203.9A patent/CN106972841B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB181047A (en) * | 1921-01-19 | 1922-05-19 | Oscar Christian Roos | Improvements in electromagnetic-wave transmitting systems |
| GB1304433A (en) * | 1969-05-05 | 1973-01-24 | ||
| JP2004312498A (en) * | 2003-04-09 | 2004-11-04 | Hitachi Metals Ltd | Low-pass filter and high-frequency switch using the same |
| JP2007088617A (en) * | 2005-09-20 | 2007-04-05 | Mitsubishi Electric Corp | Feedforward amplifier |
| CN105227160A (en) * | 2015-09-18 | 2016-01-06 | 西北核技术研究所 | The square wave Linear transformer driver of double-layer coaxial structure |
| CN206698197U (en) * | 2017-04-25 | 2017-12-01 | 中国工程物理研究院流体物理研究所 | A kind of pulse shaping circuit and LTD module |
Non-Patent Citations (3)
| Title |
|---|
| 姜晓峰;孙凤举;魏浩;梁天学;王志国;: "双层同轴结构的方波直线变压器驱动源模块设计", no. 01 * |
| 孟志鹏;杨汉武;钱宝良;苏春;: "单级长脉冲LTD模块的设计及分析", no. 01 * |
| 赵越等: "方波直线变压器驱动源模块设计", pages 26 - 30 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845371A (en) * | 2017-10-12 | 2018-03-27 | 深圳市华星光电技术有限公司 | Power management integrated circuit and liquid crystal panel |
| CN107845371B (en) * | 2017-10-12 | 2020-04-03 | 深圳市华星光电技术有限公司 | Power management integrated circuit and liquid crystal panel |
| CN110287568A (en) * | 2019-06-18 | 2019-09-27 | 中国工程物理研究院应用电子学研究所 | Hundred nanosecond trapezoidal wave pulse forming networks of one kind and design method |
| CN110287568B (en) * | 2019-06-18 | 2023-01-03 | 中国工程物理研究院应用电子学研究所 | Hundred-nanosecond trapezoidal wave pulse forming network and design method |
| CN110311661A (en) * | 2019-07-17 | 2019-10-08 | 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 condenser |
| 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 |
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| CN106972841B (en) | 2023-07-07 |
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