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CN108390586A - A kind of flash pumping laser power circuit - Google Patents

A kind of flash pumping laser power circuit Download PDF

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Publication number
CN108390586A
CN108390586A CN201810332718.9A CN201810332718A CN108390586A CN 108390586 A CN108390586 A CN 108390586A CN 201810332718 A CN201810332718 A CN 201810332718A CN 108390586 A CN108390586 A CN 108390586A
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CN
China
Prior art keywords
circuit
main
arcing
laser power
pumping laser
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Granted
Application number
CN201810332718.9A
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Chinese (zh)
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CN108390586B (en
Inventor
张敏
钟和清
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Wuhan Huazhong Huachang Energy Electric Technology Co Ltd
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Wuhan Huazhong Huachang Energy Electric Technology Co Ltd
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Priority to CN201810332718.9A priority Critical patent/CN108390586B/en
Publication of CN108390586A publication Critical patent/CN108390586A/en
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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K3/00Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/53Generators 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
    • H03K3/57Generators 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 the switching device being a semiconductor device

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  • Generation Of Surge Voltage And Current (AREA)

Abstract

The invention belongs to high voltage pulse power technology fields, disclose a kind of flash pumping laser power circuit, including main discharge circuit, pre-arcing circuit and confluence busbar.Main discharge circuit includes main charhing unit, at least one set of pulse energy-storage units circuit being connect with the main charhing unit both ends, and the main discharge pulsactor circuit drawn by the high-pressure side of the pulse energy-storage units circuit;Pre-arcing circuit includes precharge unit, the pre-arcing capacitor being connect with the precharge unit both ends, and the pre-arcing pulsactor circuit drawn by the pre-arcing capacitor high-pressure side.The present invention can prevent main thyristor switch high temperature caused by current-rising-rate is excessive from damaging.

Description

A kind of flash pumping laser power circuit
Technical field
The present invention relates to high voltage pulse power technology fields, more particularly, to a kind of flash pumping laser power supply electricity Road.
Background technology
Large scale high energy pulse xenon lamp is one of widely used pumping source in current strong laser system, it is will be electric The discharge device and the Primary Component in laser system that can be converted into luminous energy.Flash pumping laser power supply is large-scale Gao Gong The important component of rate laser provides high-power energy pulse for xenon lamp excitation.
In pulse pump power supply, switching device has especially important meaning, it connects energy storage device and load, will press Pulse after contracting passes to load, and its performance can directly impact amplitude, the rise time etc. that export pulse.Qiang Gong Requirement of the rate pulse power to switch be:Long lifespan, easy-maintaining, compact-sized, performance is stable, through-current capability is strong, withstanding voltage Greatly, breakdown time delay is short and dispersed small.
In the pulse power, the traditional switch element being often used includes gas switch, ignitron, Triggered Vacuum Switch etc.. Currently, high-power solid semiconductor switch due to its long lifespan, small, reliability is high, control characteristic is good, it is mating it is simple, at The advantages that this is relatively low, is increasingly becoming the developing direction of pulse power switch, shows the trend for substituting traditional switch.It is high-power Semiconductor controlled silicon thyristor switch is the Typical Representative of solid semiconductor switch.However, current semiconductor controlled silicon crystalline substance lock Pipe current capability of the switcher, withstanding voltage are limited, and only voucher semiconductor controlled silicon thyristor monomer valve block cannot achieve larger Operating current and higher operating voltage.Therefore, it when strong power impulses power supply uses semiconductor controlled silicon thyristor switch, needs Multiple thyristor monomer valve block connection in series-parallel are used.
Flash pumping laser power work is under high-voltage large current environment, it is expected that the voltage endurance capability of thyristor switch is got over It is high better, and the raising of voltage endurance capability can restrict the di/dt tolerances of thyristor switch.And since operating current peak value is high, arteries and veins The initial rate of current rise of width, thyristor switch opening process is higher.When on the initial current of thyristor switch opening process When the rate of liter is more than the di/dt tolerances of switch, thyristor switch will be damaged since local temperature is excessively high.
Invention content
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of flash pumping laser power circuit is proposed, solve The skill that semiconductor controlled silicon thyristor switch opening process high temperature caused by current-rising-rate is excessive damages in the prior art Art problem.
To reach above-mentioned technical purpose, technical scheme of the present invention provides a kind of flash pumping laser power circuit, packet It includes:
Main discharge circuit comprising main charhing unit, at least one set of pulse storage being connect with the main charhing unit both ends Can element circuit, and by the pulse energy-storage units circuit high-pressure side draw main discharge pulsactor circuit, the pulse Energy-storage units circuit includes the damping element being sequentially connected in series and main energy-storage capacitor, and the main discharge pulsactor circuit includes phase Mutual concatenated main saturated inductor and main thyristor switch;
Pre-arcing circuit comprising precharge unit, the pre-arcing capacitor being connect with the precharge unit both ends, and By the pre-arcing capacitor high-pressure side draw pre-arcing pulsactor circuit, the pre-arcing pulsactor circuit include according to Secondary concatenated pre-arcing inductor, presaturation inductor and pre- thyristor switch;And
Converge busbar, is used for the main discharge pulsactor circuit and the pre-arcing pulsactor circuit and load Connection.
Compared with prior art, beneficial effects of the present invention include:
1, it connects with thyristor switch in energy-storage capacitor group and has accessed saturated inductor, limit main thyristor switching process Initial rate of current rise be no more than main thyristor switch di/dt tolerances, to prevent main thyristor switch high temperature damage;
2, it is switched as main thyristor switch, pre- thyristor switch, is had using high power semi-conductor silicon controlled crystal brake pipe Long lifespan, small, reliability is high, manageable advantage;
3, it is in parallel with pulse energy-storage units circuit group let out can circuit, finished but main thyristor when main energy-storage capacitor has charged When switching non-normally, the energy that can be stored by letting out energy circuit releasing capacitor has safety, the high advantage of reliability.
Description of the drawings
Fig. 1 is circuit diagram of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
The present invention provides a kind of flash pumping laser power circuit, including main discharge circuit, pre-arcing circuit and remittance Busbar is flowed, as shown in Figure 1.
Main discharge circuit includes main charhing unit, at least one set of pulse energy storage list being connect with the main charhing unit both ends First circuit (the present embodiment is illustrated for 16 groups), and the main discharge drawn by the high-pressure side of the pulse energy-storage units circuit are satisfied And inductive circuit, the pulse energy-storage units circuit include the damping element being sequentially connected in series and main energy-storage capacitor C1 (such as C1-1 To C1-16), the main discharge pulsactor circuit includes the main saturated inductor L being serially connected and main thyristor switch K.
Pre-arcing circuit includes precharge unit, the pre-arcing capacitor C being connect with the precharge unit both endsx, and By the pre-arcing capacitor CxThe pre-arcing pulsactor circuit that high-pressure side is drawn, the pre-arcing pulsactor circuit include The pre-arcing inductor L being sequentially connected in seriesx, presaturation inductor LyWith pre- thyristor switch Kx
The busbar that converges is used to connect the main discharge pulsactor circuit and the pre-arcing pulsactor circuit with load It connects.
Main charhing unit and precharge unit are independent from each other, and 220V can be used in main charhing unit and precharge unit Or the input of 380V three-phase alternating currents, main charhing unit output voltage is adjustable in 0 to energy-storage capacitor group rated voltage, precharge Unit output voltage is adjustable in 0 to preionization rated capacitor voltage, and input voltage is realized extremely by high-frequency step-up transformer The boosting of output voltage.
Main discharge circuit uses high-frequency series resonant charging circuit configuration, has small, light-weight, charging repeatable accuracy The advantage that high, intrinsic anti-short circuit capability is strong and reliability is high.The output voltage of main charhing unit determines the initial of the pulse power Operating voltage.Main charhing unit charges to capacitor group, and after charging complete, main charhing unit will not refer to the technology of discharge circuit Mark, current waveform generate any influence, its influence to main discharge circuit is only embodied on the initial operating voltage of capacitor.Its Operation principle is:Main charhing unit is powered to pulse energy-storage units circuit group parallel with one another, to each main energy-storage capacitor C1 (such as C1-1 to C1-16) charges, and after the completion of to be charged, is closed main thyristor switch K, the main storage in pulse energy-storage units circuit group Energy capacitor C1 (such as C1-1 to C1-16) discharges simultaneously, and pulse current powers to the load through the busbar that converges.It is switched in main thyristor In K opening processes, saturation current value is not up to by the electric current of main thyristor switch K, main saturated inductor L presents larger non- Pulsactor limits the initial rate of current rise by main thyristor switch K opening processes.When main thyristor switch K is open-minded After the completion, electric current rises to saturation current value, and saturated inductor is saturated rapidly, and inductance value is down to close to 0, and pulsactor is equivalent to Device is short-circuited, and discharge current rises rapidly at this time, exports normal burst waveform.Since main thyristor switch K turn-on times are very short, Therefore normal burst waveform index is not influenced.
The operation principle of pre-arcing circuit is identical as the operation principle of main discharge circuit, and difference lies in the rule of pre-arcing circuit Mould is smaller, and there is no need to use extensive energy-storage capacitor group energy storage, it is only necessary to pre-arcing capacitor CxIt is as energy storage device Can, LxFor pre-arcing inductor, effect is to adjust pre-arcing impulse waveform, presaturation inductor LyWith pre- thyristor switch Kx Series connection.Pre-arcing circuit discharges before main discharge circuit, to loading into line precharge (such as making xenon lamp pre-burning), such energy Enough ensure that main discharge circuit discharging is more fully and uniform, and load can be protected, extends load life.
The selection principle of main saturated inductor L is:When not accessing main saturated inductor L, regular picture current peak is I, Rising time is trise, then the initial rate of current rise of main thyristor switch K opening processes be aboutIt is main The di/dt tolerances of thyristor switch K are Q, service time tr.The unsaturated inductance value L of selected main saturated inductor L1It answers The initial rate of current rise in main thyristor switch K opening processes can will be made from (di/dt)maxIt is limited to (di/dt) r, and (di/dt)r≤ 0.8Q, saturation current value should be taken as (di/dt)b·tr~1.5 (di/dt)b·tr.The selection of presaturation inductor Principle is consistent with the selection principle of main saturated inductor.
Preferably, the damping element is inductive resistance integral type element, the metal alloy of high resistivity is used Line coiling forms, such as stainless steel, copper-manganese, constantan.R1-1 to R1-16 is the equivalent resistance of damping element, and L1-1 to L1-16 is The equivalent inductance of damping element.The effect of damping element is:Capacitor occurs in main energy-storage capacitor C1 (such as C1-1 to C1-16) The failures such as internal breakdown, fault restriction branch road fault current peak value and climbing, absorb the electric discharge energy of remaining shunt capacitor Amount, prevents the explosion of faulty capacitor on fire.
Preferably, the main thyristor switch K and pre- thyristor switch KxIt is multiple semiconductor controlled silicon crystalline substance locks Pipe monomer valve block is connected in series, and with 3 times or so of pressure-resistant nargin, to improve thyristor switch voltage endurance capability.It is currently known 6 Inch semiconductor silicon controlled crystal brake pipe monomer valve block, pressure-resistant 6.5kV, through-flow peaking capacity 330kA, 5 inch semiconductors are silicon-controlled Thyristor monomer valve block, pressure-resistant 6.5kV, through-flow peaking capacity 280kA, 4 inch semiconductor silicon controlled crystal brake pipe monomer valve blocks are resistance to Press 6.0kV, through-flow peaking capacity 200kA.With semiconductor transistor elements diameter reduce, monomer valve block price also can index decreased, Reliability of technology then can index rising.The semiconductor controlled silicon thyristor monomer valve chip size that thyristor switch is selected, should basis Regular picture current peak determines.For example, when energy-storage capacitor group rated operational voltage is 26kV, regular picture electric current When peak value is 220kA, pressure-resistant nargin and regular picture current peak to ensure 3 times are no more than the through-flow peak of thyristor switch Value, main thyristor switch K may be selected 12 5 inch semiconductor silicon controlled crystal brake pipe monomer valve blocks and be composed in series.
The quantity of the main thyristor switch K can be one, preferably, the quantity of the main thyristor switch K For two or more, and it is parallel with one another.When main discharge circuit discharging electric current is larger, exceed 6 inch semiconductor silicon controlled crystal brake pipes When the through-flow peak value of monomer valve block, corresponding flow equalizing circuit can be coordinated, it is used in parallel using two or more thyristor switch.
Preferably, the main energy-storage capacitor C1 is the metallization film capacitor of high energy storage density.
Preferably, the main discharge circuit further include with the pulse energy-storage units circuit in parallel and ground connection let out energy Circuit, this let out can circuit include that letting out of being serially connected can resistance R and let out can switch Kr.When (such as C1-1 is extremely by main energy-storage capacitor C1 C1-16) charged and finished but when the non-normallies of main thyristor switch K, can by let out can the storage of circuit releasing capacitor energy Amount.
Preferably, the confluence busbar is connected by the cable equipped with harmonic inductance with load.The load has Multiple, the cable is correspondingly provided with a plurality of, and the load includes several xenon flash lamps.The present embodiment is said by taking 12 cables as an example Several xenon flash lamps that are bright, and connecting one to one with the cable.12 road cable TL-1 to TL-12, harmonic inductance L2-1 is extremely L2-12, xenon flash lamp LT1-1, LT1-2 to LT12-1, LT12-2.
Preferably, the harmonic inductance L2-1 to L2-12 in several cables is equally spaced in a ring.This is Because according to electromagnetic coupling principle, there are coupling between harmonic inductance, the harmonic inductance that annular is equally spaced can be put down Mutual coupling, keeps the electric current for flowing through harmonic inductive branch more balanced between weighing apparatus harmonic inductance.
Preferably, a kind of above-mentioned flash pumping laser power circuit, can also coordinate control monitoring record unit Realize operation control, status monitoring and the data record to whole system.Control monitoring record unit function include:Each crystalline substance lock The conducting control of pipe switch, lets out and can let out and can switch in circuit at the charge control of main charhing unit, the charge control of precharge unit Open and close control;It realizes the real-time monitoring to the various operating statuses of system, and takes necessary control measure in abnormality Ensure system operation safety;It realizes to the real-time synchronization writing functions of system operational parameters, it is real-time same such as discharge current waveform The real-time synchronization record of step record, energy-storage capacitor group operating voltage.Main, precharge unit is by control monitoring record unit control System carries out the transmission of control signal using optical fiber.Control monitoring record unit realizes that charhing unit power-up, setting are filled according to order The charging voltage of electric unit cuts off the operations such as charhing unit power supply after starting charging, charging complete.
The specific implementation mode of present invention described above, is not intended to limit the scope of the present invention..Any basis The various other corresponding changes and deformation that the technical concept of the present invention is made, should be included in the guarantor of the claims in the present invention It protects in range.

Claims (9)

1. a kind of flash pumping laser power circuit, it is characterised in that including:
Main discharge circuit comprising main charhing unit, at least one set of pulse energy storage list being connect with the main charhing unit both ends First circuit, and by the pulse energy-storage units circuit high-pressure side draw main discharge pulsactor circuit, the pulse energy storage Element circuit includes the damping element being sequentially connected in series and main energy-storage capacitor, and the main discharge pulsactor circuit includes mutually going here and there Main saturated inductor and the main thyristor switch of connection;
Pre-arcing circuit comprising precharge unit, the pre-arcing capacitor being connect with the precharge unit both ends, and by institute The pre-arcing pulsactor circuit of pre-arcing capacitor high-pressure side extraction is stated, the pre-arcing pulsactor circuit includes going here and there successively Pre-arcing inductor, presaturation inductor and the pre- thyristor switch of connection;And
Converge busbar, is used to connect the main discharge pulsactor circuit and the pre-arcing pulsactor circuit with load It connects.
2. flash pumping laser power circuit according to claim 1, it is characterised in that:The damping element is inductance Resistance integrated element uses the metal alloy wire coiling of high resistivity to form.
3. flash pumping laser power circuit according to claim 1, it is characterised in that:Main thyristor switch and Pre- thyristor switch is that multiple semiconductor controlled silicon thyristor monomer valve blocks are connected in series, and with 3 times of pressure-resistant nargin.
4. flash pumping laser power circuit according to claim 1 or 3, it is characterised in that:The main thyristor is opened The quantity of pass is two or more, and parallel with one another.
5. flash pumping laser power circuit according to claim 1, it is characterised in that:The main energy-storage capacitor is Metallization film capacitor.
6. flash pumping laser power circuit according to claim 1, it is characterised in that:The main discharge circuit also wraps Include with the pulse energy-storage units circuit in parallel and ground connection let out can circuit, this let out can circuit include that letting out of being serially connected can resistance It can be switched with letting out.
7. flash pumping laser power circuit according to claim 1, it is characterised in that:The confluence busbar is by setting The cable and load for having harmonic inductance connect.
8. flash pumping laser power circuit according to claim 7, it is characterised in that:It is described load have it is multiple, The cable is correspondingly provided with a plurality of, and corresponding a plurality of harmonic inductance is equally spaced in a ring.
9. the flash pumping laser power circuit according to claim 1 or 8, it is characterised in that:If the load includes Dry xenon flash lamp.
CN201810332718.9A 2018-04-13 2018-04-13 Strong pulse pumping laser power supply circuit Active CN108390586B (en)

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CN108390586B CN108390586B (en) 2024-06-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109857037A (en) * 2019-03-13 2019-06-07 武汉华中华昌能源电气科技有限公司 A kind of control extensions for the pulse power

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Publication number Priority date Publication date Assignee Title
DE3617185A1 (en) * 1986-05-21 1987-11-26 Licentia Gmbh Arrangement for controlling gate-turn-off thyristors, particularly of higher power
JPH09205357A (en) * 1996-01-25 1997-08-05 Mitsubishi Electric Corp Semiconductor device
CN101540188A (en) * 2008-03-17 2009-09-23 尔必达存储器株式会社 Semiconductor device having single-ended sensing amplifier
CN101588672A (en) * 2009-06-11 2009-11-25 西安交通大学 Output protection circuit of Marx trigger of double-electrode gas switch
CN101697478A (en) * 2009-10-29 2010-04-21 华东师范大学 Full-difference E-type power amplifier
CN106849918A (en) * 2017-01-23 2017-06-13 华中科技大学 A kind of xenon lamp encourages the pulse pump supply unit of high-energy laser
CN107026384A (en) * 2017-05-02 2017-08-08 中国工程物理研究院激光聚变研究中心 A kind of xenon lamp device for solid laser amplifier pump energy
CN208190530U (en) * 2018-04-13 2018-12-04 武汉华中华昌能源电气科技有限公司 A kind of flash pumping laser power circuit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3617185A1 (en) * 1986-05-21 1987-11-26 Licentia Gmbh Arrangement for controlling gate-turn-off thyristors, particularly of higher power
JPH09205357A (en) * 1996-01-25 1997-08-05 Mitsubishi Electric Corp Semiconductor device
CN101540188A (en) * 2008-03-17 2009-09-23 尔必达存储器株式会社 Semiconductor device having single-ended sensing amplifier
CN101588672A (en) * 2009-06-11 2009-11-25 西安交通大学 Output protection circuit of Marx trigger of double-electrode gas switch
CN101697478A (en) * 2009-10-29 2010-04-21 华东师范大学 Full-difference E-type power amplifier
CN106849918A (en) * 2017-01-23 2017-06-13 华中科技大学 A kind of xenon lamp encourages the pulse pump supply unit of high-energy laser
CN107026384A (en) * 2017-05-02 2017-08-08 中国工程物理研究院激光聚变研究中心 A kind of xenon lamp device for solid laser amplifier pump energy
CN208190530U (en) * 2018-04-13 2018-12-04 武汉华中华昌能源电气科技有限公司 A kind of flash pumping laser power circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109857037A (en) * 2019-03-13 2019-06-07 武汉华中华昌能源电气科技有限公司 A kind of control extensions for the pulse power
CN109857037B (en) * 2019-03-13 2024-09-20 武汉华中华昌能源电气科技有限公司 Control extension for pulse power supply

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