CN103780119A - High-power and long-pulse power source - Google Patents
High-power and long-pulse power source Download PDFInfo
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- CN103780119A CN103780119A CN201410011191.1A CN201410011191A CN103780119A CN 103780119 A CN103780119 A CN 103780119A CN 201410011191 A CN201410011191 A CN 201410011191A CN 103780119 A CN103780119 A CN 103780119A
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Abstract
The invention discloses a high-power and long-pulse power source which comprises positive and negative charging power supplies, a control system, a high-energy trigger power supply, a high-voltage pulse square wave generating system and a load system, wherein the positive and negative charging power supplies are connected with a charging input end of the high-voltage pulse square wave generating system, the high-energy trigger power supply is connected with a trigger isolation resistance input end of the high-voltage pulse square wave generating system, the control system is connected with control units of the positive and negative charging power supplies and the high-energy trigger power supply, and a high-voltage output end of the high-voltage pulse square wave generating system is connected with the load system. The high-power and long-pulse power source integrated the advantages of high and continuously-adjustable output voltage, fast pulse front edge, large pulse width, repetition-frequency stable operation, small size, light weight, low cost and the like. Research on the high-power microwave technology, the electron beam generation and transmission technology and X-ray machines can be carried out on the basis of the high-power and long-pulse power source, and the high-power and long-pulse power source can play a role in the pulse power technology fields such as industry and medical treatment. On the premise of ensuring the same technical indicators, the size and the weight of the high-power and long-pulse power source of the invention are reduced to 1/3 or less of those of a traditional system, and the high-power and long-pulse power source has the technical advantages of small size, light weight, simple structure and low cost.
Description
Technical field
The invention belongs to Pulse Power Techniques field, be specifically related to a kind of high power long pulse power source.Can be applicable to carry out the researchs such as High-Power Microwave technology, electronic beam current generation and transmission technology, X-ray machine, also can be in industry, medical isopulse power technology field play a role, be to realize pulse power supply high-technology index, miniaturization, lightness, inevitable approach cheaply.
Background technology
Pulse power supply refers to the electric installation that carries out pulse energy compression, obtains high power, short pulse.The operation principle of pulse power device is: first produce required elementary impulse waveform (Millisecond is to delicate level) by initial energy storage technology (capacitor deposited energy, inductive energy storage, chemical energy etc.), and then utilize pulse forming line and switching technique to compress in time scale, pulse duration is just greatly reduced (nanosecond order), thereby has increased greatly peak power.Common long pulse power source adopts the technology path of Marx generator+pulse forming line, first form the initial high pressure pulse of a microsecond magnitude with Marx generator, and then utilize pulse forming line paired pulses to carry out shaping, finally on load system, obtain nanosecond order high voltage pulse.This class device (Liu Xisan, High pulse power technology, National Defense Industry Press, 424-436 page) need to use primary source, one-level pulse compression, secondary pulse compression could obtain the square-wave pulse needing, weak point is that energy-storage system and pulse shaping system are absolute construction, and energy conversion efficiency is low, system is huge, Heavy Weight.For traditional Repetitive Marx Generator, advantage is that volume is little, is mainly used in wide range pulse and produces, shortcoming is that energy storage is low, pulse duration is narrow, cannot produce pulse square wave (Zhang Jinqi etc., light laser and the particle beams, 2009,21(4), 637-640 page).
In many application of High-Power Microwave, Pulse Power Techniques are keys, and wherein maximum challenge is exactly to study miniaturization, portable long pulse square wave high power pulse power source; In addition, pulse power supply is having strong application market aspect X-ray machine, industry CT high voltage source.The main cause of restriction pulse power supply practical application is that volume is large, cost is high, and traditional Pulse Power Techniques mode can not meet the miniaturization of current paired pulses power source, lightness, requirement cheaply.
The key that realizes the miniaturization of long pulse power source is the delivery efficiency of the length how chopped pulse forms line, the progression that reduces pulse compression, raising pulse power supply.
Summary of the invention
The technical problem to be solved in the present invention is to have overcome Marx generator+pulse forming line defect of the prior art, adopt energy storage and the integrated frame mode of pulse shaping, a kind of high power long pulse power source is provided, and this system can realize high power, high energy storage, high repetition, low jitter, quasi-square wave pulse output.This system adopts direct driving technologies, by pulse shaping and energy storage integrated design, has reduced energy storage conversion links, has dwindled system bulk; Adopt two capacitance structure pulse shaping modules simultaneously, reduced the complexity of system, and utilized the advantage of pulse capacitor, there is good reliability, the advantage that the life-span is long; In addition, this system adopts the folded technology of Marx type voltage string, and its circuit working principle is charged in parallel, discharged in series, and circuit structure is simple; The circuit loop of system adopts the method for designing of low inductance, utilizes Plate-Transmission-Line mutual inductance principle, is with end export structure by pulse shaping modular design, has realized the low loop inductance of Circuits System, makes that pulse front edge is little, flat-top is wide.
The present invention adopts following technical scheme: a kind of high power long pulse power source, comprise that positive and negative charge power supply, control system, high energy trigger power supply, Pulse High Voltage produces system and load, described control system is connected with the control unit that positive and negative charge power supply and high energy trigger power supply, and the high-voltage output end that described Pulse High Voltage produces system connects load; Described Pulse High Voltage generation system comprises that the two capacitance structure pulse shaping modules of N level connect and be integrated successively, and the two capacitance structure pulse shaping modules of every one-level comprise the first output electrode and the second output electrode; The first output electrode of the two capacitance structure pulse shaping modules of the first order is connected to ground, and the second output electrode of the two capacitance structure pulse shaping modules of N level is connected to load after connecting high pressure isolated component over the ground; Between the two capacitance structure pulse shaping moulds of the first order start the two capacitance structure pulse shaping modules of every one-level and the two capacitance structure pulse shaping modules of next stage, be connected one-level three electrode gas spark gap switches, between two output electrodes of the two capacitance structure pulse shaping modules of every one-level output electrode corresponding with next stage pair capacitance structure pulse shaping modules, connect the isolated component that discharges; Between two output electrodes of the two capacitance structure pulse shaping modules of the first order and positive and negative charge power supply, be connected by two electric discharge isolated components; The trigger electrode junction of every one-level three electrode gas spark gap switches connects one and triggers isolation resistance, and another utmost point that triggers isolation resistance is connected to high energy and triggers power supply; Wherein N is natural number.
In technique scheme, between the second output electrode of the two capacitance structure pulse shaping modules of described every one-level, connect negative electric discharge isolated component, between the first output electrode of the two capacitance structure pulse shaping modules of every one-level, connect the isolated component that just discharging.
In technique scheme, between the second output electrode of the two capacitance structure pulse shaping modules of the described first order and the negative pole of positive and negative charge power supply, be connected a negative electric discharge isolated component, between the first output electrode connection of the two capacitance structure pulse shaping modules in the second level and the positive pole of positive and negative charge power supply, be connected the isolated component that just discharging.
In technique scheme, between the second output electrode of the two capacitance structure pulse shaping modules of the described first order and the positive pole of positive and negative charge power supply, be connected the isolated component that just discharging, between the first output electrode of the two capacitance structure pulse shaping modules in the second level and the negative pole of positive and negative charge power supply, be connected a negative electric discharge isolated component.
In technique scheme, described electric discharge isolated component is resistance or for inductance or for diode.
In technique scheme, described high energy triggers the output of power supply and the input of the triggering resistance being connected on three electrode gas spark gap switches connects.
In technique scheme, described high energy triggers the output signal of power supply and controls every one-level three electrode gas spark gap switches simultaneously, and the forward position of trigger output signal is less than, and 100ns, pulse duration are wider than 200ns, energy is greater than 10J.
In technique scheme, the capacitor's capacity of the two capacitance structure pulse shaping modules of the described first order and N level equates, and the capacitor's capacity of two capacitance structure pulse shaping modules of other grades is the half of the first order pair capacitance structure pulse shaping module capacitance capacitances.
In technique scheme, the described pair of capacitance structure pulse shaping module can be with three capacitance structure pulse shaping module or boostraps, or pulse forming line replaces.
In technique scheme, described high pressure over the ground isolated component is resistance or is inductance.
In the present invention, Pulse High Voltage producing method is Marx type circuit structure, this is a kind of known technology, in known technology, circuit structure is mainly by capacitor, electric discharge isolated component, level capacity earth isolated component, switch composition, sort circuit structure can be equivalent to RLC discharge circuit, output waveform is RLC discharge waveform, the place that is significantly different from known technology in the present invention is to have cancelled in circuit structure a level capacity earth isolated component, adopt two capacitance structure pulse shaping modules to replace capacitor simultaneously, the circuit structure of invention has reduced circuit element, energy storage and pulse shaping are carried out to integrated design, realize the output of long pulse square wave, in the present invention, adopt high energy to trigger power supply, make the output waveform of high power long pulse power source there is good stability and repeatability.
In the present invention, pulse forming network in two capacitance structure pulse shaping modules adopts high-voltage pulse capacitor as energy-storage units, it has the advantage that energy storage density is large, and the two capacitor pulse formation systems of employing, reduce the progression of pulse forming network, overcome the shortcoming that single capacitor system cannot form pulse square wave, can realize fast forward position, the output of accurate pulse square wave; This pulse forming network compact conformation, little, the withstand voltage height of volume, energy storage density is large, reliability is high, can be applicable to the pulse power system of hundred nanosecond; Particular circuit configurations and the function of two capacitance structure pulse shaping modules are separately applied for a patent (2013101532966).
In the present invention, the effect that high energy triggers power supply is just to provide enough large energy and voltage, multistage gas spark gap switch triggering and conducting simultaneously in assurance system, fast forward position, broad pulse, high-octane triggering signal are provided, forward position be generally less than 100ns, pulse duration be generally greater than 200ns, output energy be generally greater than 10J.
In the present invention, the operation principle of high power long pulse power source is: positive and negative charge power supply by each pulse shaping module (suppose to add up to n) charged in parallel to voltage ± V0, then all gas spark gap switches conducting that is triggered, these pulse shaping modules will all be together in series, on matched load, set up the high-voltage pulse that amplitude is nV0, and pulse duration is identical with the output signal pulses width of individual pulse shaping module.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows: the present invention adopts direct driving technologies, by pulse shaping and energy storage integrated design, reduced energy storage conversion links, dwindled system bulk; Adopt two capacitance structure pulse shaping modules, reduced the complexity of system, and utilized the advantage of pulse capacitor, there is good reliability, the advantage that the life-span is long; In addition, this system adopts the folded technology of Marx type voltage string, and its circuit working principle is charged in parallel, discharged in series, and circuit structure is simple; The circuit loop of system adopts the method for designing of low inductance, utilizes Plate-Transmission-Line mutual inductance principle, is with end export structure by pulse shaping modular design, has realized the low loop inductance of Circuits System, makes that pulse front edge is little, flat-top is wide.Long pulse power source of the present invention can be realized high power, high energy storage, high repetition, low jitter, quasi-square wave pulse output, and this novel high-power long pulse power source can be taken into account the high and many merits such as adjustable, pulse front edge is fast, pulse duration is wide, repetition rate stable operation, volume is little, lightweight, cost is low continuously of output voltage; Based on this novel high-power long pulse power source, can carry out the researchs such as High-Power Microwave technology, electronic beam current generation and transmission technology, X-ray machine technology, also can play a role in industry, medical isopulse power technology field; Guaranteeing that under the condition of constructed index, volume, weight are narrowed down to 1/3rd of existing system by pulse power supply of the present invention, thering is miniaturization, lightness, the technical advantage that simple in structure, cost is low.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is analog waveform figure of the present invention;
Wherein: the 1st, two capacitance structure pulse shaping modules, 2 is three electrode gas spark gap switches, the 3rd, trigger isolation resistance, the 4th, the isolated component that just discharging, the 5th, negative electric discharge isolated component, the 6th, high pressure is isolated component over the ground.
Embodiment
Disclosed all features in this specification, or step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
As shown in Figure 1, a kind of high power long pulse power source of the present invention comprises positive and negative charge power supply, control system, high energy triggers power supply, Pulse High Voltage produces system and load, described positive and negative charge power supply is connected with the charging terminal that Pulse High Voltage produces system, described high energy triggers power supply and is connected with the triggering resistance input that Pulse High Voltage produces system, described control system is divided two paths of signals, one road signal is used for controlling positive and negative charge power supply, one road signal is used for controlling high energy trigger source, the high-voltage output end that described Pulse High Voltage produces system is connected with load system, described Pulse High Voltage generation system comprises the two capacitance structure pulse shaping modules 1 of N level, N-1 level three electrode gas spark gap switches 2, isolated component 4 is just discharging, negative electric discharge isolated component 5, N-1 level triggers isolation resistance 3, high pressure isolated component 6 over the ground, the first output electrode of the described two capacitance structure pulse shaping modules 1 of the first order is connected to the ground, the second output electrode of first order module is connected with first electrode of first order gas spark gap switch, second electrode of first order gas spark gap switch 2 is connected with the first output electrode of the two capacitance structure pulse shaping modules 1 in the second level, the like, two capacitance structure pulse shaping modules 1 and three electrode gas spark gap switches 2 join end to end, stack successively, two the first output electrodes of capacitance structure pulse shaping module 1 of afterbody and second electrode of afterbody three electrode gas spark gap switches 2 are connected, second electrode of the two capacitance structure pulse shaping modules 1 of afterbody and load system and high pressure over the ground isolated component 6 are connected.High pressure over the ground isolated component 6 is mainly used to guarantee the charging of afterbody pulse shaping module, only under the condition of second electrode DC earthing that guarantees the two capacitance structure pulse shaping modules 1 of afterbody, just can make system normally work, in addition, for guaranteeing the through-flow consistency of the system first order and afterbody three electrode gas spark gap switches 2 and other gas switchs, the resistance value of the two capacitance structure pulse shaping modules 1 of the first order and afterbody is the half of other pulse shaping module resistance values, the capacitance that is to say the two capacitance structure pulse shaping modules of the first order and afterbody is the twice of other pair of capacitance structure pulse shaping module capacitance value, the input of described triggering isolation resistance 3 is connected with the trigger electrode of three electrode gas spark gap switches 2, the first order electrode of negative electric discharge isolated component 5 is connected with first electrode of the first order three electrode gas spark gap switches 2 with second electrode of the two capacitance structure pulse shaping modules 1 of the first order, two first electrodes of capacitance structure pulse shaping module 1 in first order electrode and the second level and second electrode of the first order three electrode gas spark gap switches 2 of isolated component 4 of just discharging is connected, the like, the afterbody electrode of negative electric discharge isolated component is connected with first electrode of afterbody three electrode gas spark gap switches 2 with second electrode of the two capacitance structure pulse shaping modules 1 of N-1 level, second electrode of the afterbody electrode of isolated component and first electrode of afterbody pulse shaping module and afterbody gas spark gap switch of just discharging is connected.
Embodiment mono-
Implement special case for one as a kind of high power long pulse power source of the present invention, design a high power long pulse power source, comprise positive and negative charge power supply, control system, high energy triggers power supply, Pulse High Voltage produces system and load, wherein Pulse High Voltage generation system comprises 21 grades of two capacitance structure pulse shaping modules and 20 grades of gas spark gap switches, the parameter of the first order and afterbody pulse shaping module is C1=15nF, C2=45nF, Lc1=20nH, Lc2=20nH, L1=25nH, L2=30nH, by calculating, resistance value is 1.25 Ω, capacitance is 60nF, pulse duration is 150ns, the parameter of all the other 19 grades of pulse shaping modules is C1=7.5nF, C2=22.5nF, Lc1=20nH, Lc2=20nH, L1=80nH, L2=70nH, by calculating, pulse duration 150ns, characteristic impedance 2.5 Ω, capacitance is 30nF, the long pulse power source system performance impedance of design is 50 Ω.
Assumed load system 5 resistance values are 50 Ω, produce system performance impedance matching with Pulse High Voltage, under the specific condition of charge power supply Symmetrical charging, design charging voltage value is ± 50kV, the desirable output voltage values of system is that 1MV, electric current are that 20kA, power output are 20GW, and pulse duration is that 160ns, pulse front edge are 40ns.Breadboardin result as shown in Figure 2.Because the multistage gas spark gap switch in whole pulse power supply all carries out external trigger work, trigger that power supply energy is large, voltage is high (when high energy triggers electric power output voltage 100kV, energy storage 80J, repetition rate 50Hz), guaranteed consistency and the stable type of gas switch work, thereby whole system can realize high repetition frequency 50Hz operation.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (10)
1. a high power long pulse power source, comprise that positive and negative charge power supply, control system, high energy trigger power supply, Pulse High Voltage produces system and load, described control system is connected with the control unit that positive and negative charge power supply and high energy trigger power supply, and the high-voltage output end that described Pulse High Voltage produces system connects load; It is characterized by described Pulse High Voltage generation system and comprise that the two capacitance structure pulse shaping modules of N level connect and be integrated successively, the two capacitance structure pulse shaping modules of every one-level comprise the first output electrode and the second output electrode; The first output electrode of the two capacitance structure pulse shaping modules of the first order is connected to ground, and the second output electrode of the two capacitance structure pulse shaping modules of N level connects a high pressure and after isolated component, is connected to load over the ground; Between the two capacitance structure pulse shaping moulds of the first order start the two capacitance structure pulse shaping modules of every one-level and the two capacitance structure pulse shaping modules of next stage, be connected one-level three electrode gas spark gap switches, between two output electrodes of the two capacitance structure pulse shaping modules of every one-level output electrode corresponding with next stage pair capacitance structure pulse shaping modules, connect the isolated component that discharges; Between two output electrodes of the two capacitance structure pulse shaping modules of the first order and positive and negative charge power supply, be connected by two electric discharge isolated components; The trigger electrode junction of every one-level three electrode gas spark gap switches connects one and triggers isolation resistance, and another utmost point that triggers isolation resistance is connected to high energy and triggers power supply; Wherein N is natural number.
2. a kind of high power long pulse power source according to claim 1, it is characterized by between the second output electrode of the two capacitance structure pulse shaping modules of described every one-level and connect negative electric discharge isolated component, between the first output electrode of the two capacitance structure pulse shaping modules of every one-level, connect the isolated component that just discharging.
3. a kind of high power long pulse power source according to claim 2, between the second output electrode that it is characterized by the two capacitance structure pulse shaping modules of the described first order and the negative pole of positive and negative charge power supply, be connected a negative electric discharge isolated component, between the first output electrode of the second level pair capacitance structure pulse shaping modules and the positive pole of positive and negative charge power supply, be connected the isolated component that just discharging.
4. a kind of high power long pulse power source according to claim 2, between the second output electrode that it is characterized by the two capacitance structure pulse shaping modules of the described first order and the positive pole of positive and negative charge power supply, be connected the isolated component that just discharging, between the first output electrode of the two capacitance structure pulse shaping modules in the second level and the negative pole of positive and negative charge power supply, be connected one and bear the isolated component that discharges.
5. according to a kind of high power long pulse power source described in claim 3 or 4, it is characterized by described electric discharge isolated component and be resistance or for inductance or be diode.
6. a kind of high power long pulse power source according to claim 1, is characterized by described high energy and triggers the output of power supply and the connection of the input of the triggering resistance being connected on three electrode gas spark gap switches.
7. a kind of high power long pulse power source according to claim 6, it is characterized by the output signal that described high energy triggers power supply and control every one-level three electrode gas spark gap switches simultaneously, and the forward position of trigger output signal is less than, and 100ns, pulse duration are greater than 200ns, energy is greater than 10J.
8. a kind of high power long pulse power source according to claim 1, it is characterized by the described first order and equate with the capacitor's capacity of the two capacitance structure pulse shaping modules of N level, the capacitor's capacity of two capacitance structure pulse shaping modules of other grades is the half of the two capacitance structure pulse shaping module capacitance capacitances of the first order.
9. a kind of high power long pulse power source according to claim 8, it is characterized by described pair of capacitance structure pulse shaping module can replace with three capacitance structure pulse shaping modules or boostrap or pulse forming line.
10. a kind of high power long pulse power source according to claim 1, it is characterized by described high pressure over the ground isolated component be resistance, or be inductance.
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| CN110739938A (en) * | 2019-10-18 | 2020-01-31 | 中国工程物理研究院应用电子学研究所 | electric pulse trigger circuit structure |
| CN116321663A (en) * | 2023-03-31 | 2023-06-23 | 中国工程物理研究院流体物理研究所 | Heavy frequency induction acceleration unit and working method thereof |
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