CN105763096A - Combination wave circuit used for driving ablative capillary discharge - Google Patents
Combination wave circuit used for driving ablative capillary discharge Download PDFInfo
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- CN105763096A CN105763096A CN201610256978.3A CN201610256978A CN105763096A CN 105763096 A CN105763096 A CN 105763096A CN 201610256978 A CN201610256978 A CN 201610256978A CN 105763096 A CN105763096 A CN 105763096A
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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
- H03K3/57—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 the switching device being a semiconductor device
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
Abstract
The invention discloses a combination wave circuit used for driving ablative capillary discharge. The circuit comprises a pulse output loop and a heavy current loop. The pulse output loop completes flashover breakdown to a capillary gap channel. The heavy current loop forms follow current to a gap channel after capillary channel breakdown. In a capillary cavity, through a heavy current, ablation of a capillary pipe wall material is completed. By using the circuit, repeated discharge can be achieved and an application scope is wide.
Description
Technical field
The invention belongs to technical field of pulse power, relate to a kind of composite wave circuit for driving ablation-controlled arc to discharge.
Background technology
The plasma jet of the characteristics such as ablation-controlled arc electric discharge can produce to have at a high speed, high temperature and high conductivity, it can be applicable to multiple fields such as triggering of the igniting of propellant powder, space propulsion, material surface modifying, detoxication and long air spark gap.Conventional capillary tube discharge is for reducing discharge inception voltage, and the mode requiring over tinsel discharge-induced explosion is ignited the electric discharge of capillary channel more.Obviously, the mode of this triggering capillary discharging can not meet reignition, it is necessary to again changes the silk that detonates after electric discharge terminates, which greatly limits the extension of its application.More it is widely applied for making capillary discharging have, studies a kind of new drive circuit that can substitute conventional trigger mode and have great importance.
Summary of the invention
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, it is provided that a kind of composite wave circuit for driving ablation-controlled arc to discharge, this circuit can reignition, range of application is wider.
For reaching above-mentioned purpose, composite wave circuit for driving ablation-controlled arc to discharge of the present invention includes pluse output circuit and big current loop, pluse output circuit is connected with big current loop, pluse output circuit completes the flashover breakdown to capillary gap passage, big current loop forms the afterflow to clearance channel after capillary channel punctures, and logical super-high-current completes the ablation of microcapillary tube wall material is melted in capillary cavity body.
When for two electrode single gap capillary pipe structures, described big current loop includes the first electric capacity, inductance, anode tap, cathode terminal and resistance, described pluse output circuit includes pulse transformer, IGCT, diode and the second electric capacity, wherein, in pulse transformer, one end of primary side winding is connected with one end of the anode of diode and the second electric capacity, the other end of the second electric capacity and the negative electrode of diode are connected with the anode of IGCT, the negative electrode of IGCT is connected with the other end of primary side winding in pulse transformer, in pulse transformer, one end of vice-side winding is connected with cathode terminal, in pulse transformer, the other end of vice-side winding is connected with one end of resistance, the other end of resistance and one end ground connection of the first electric capacity, the other end of the first electric capacity is connected with one end of inductance, the other end of inductance is connected with anode tap.
nullWhen for three electrode two gap capillary pipe structures，Described big current loop includes the first electric capacity、Inductance、Anode tap、Cathode terminal、Target and resistance，Described pluse output circuit includes pulse transformer、IGCT、Diode and the second electric capacity，Wherein，In pulse transformer, one end of primary side winding is connected with one end of the anode of diode and the second electric capacity，The other end of the second electric capacity and the negative electrode of diode are connected with the anode of IGCT，The negative electrode of IGCT is connected with the other end of primary side winding in pulse transformer，Target is connected with one end of vice-side winding in pulse transformer，In pulse transformer, the other end of vice-side winding is connected with one end of cathode terminal and resistance，The other end of resistance and one end ground connection of the first electric capacity，The other end of the first electric capacity is connected with one end of inductance，The other end of inductance is connected with anode tap.
In pulse transformer, the number of turn of vice-side winding is 10-50 circle, and in pulse transformer, the number of turn of primary side winding is 1-5 circle.
The output voltage of pulse transformer is 20kV～300kV.
The capacity of the second electric capacity is 100nF～10 μ F, and charging voltage is 2kV～20kV.
The capacitance of the first electric capacity is 10 μ F～1000 μ F, and charging voltage is 1kV～50kV.
The inductance value of inductance is 1 μ H～100 μ H.
The resistance of resistance is 0.1 Ω～10 Ω.
The method have the advantages that
Composite wave circuit for driving ablation-controlled arc to discharge of the present invention is operationally, the flashover breakdown to capillary gap passage is completed by pluse output circuit, big current loop forms the afterflow to clearance channel after capillary channel punctures, in capillary cavity body, logical super-high-current completes the ablation of microcapillary tube wall material is melted, it is different from traditional capillary discharging loop, the present invention is made up of pluse output circuit and big current loop, the repeatability and the long-life characteristics that realize capillary discharging is coordinated by the electric discharge of pluse output circuit and big current loop, can adapt in two electrode single gap capillary pipe structures and three electrode two gap capillary pipe structures simultaneously, range of application is relatively broad, and simple in construction, easy to operate, less costly.
Accompanying drawing explanation
Fig. 1 be the present invention for two electrode single gap capillary pipe structures time structural representation；
Fig. 2 be the present invention for three electrode two gap capillary pipe structures time structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Composite wave circuit for driving ablation-controlled arc to discharge of the present invention includes pluse output circuit and big current loop, pluse output circuit is connected with big current loop, pluse output circuit completes the flashover breakdown to capillary gap passage, big current loop forms the afterflow to clearance channel after capillary channel punctures, and logical super-high-current completes the ablation of microcapillary tube wall material is melted in capillary cavity body.
Embodiment one
nullWith reference to Fig. 1，When the present invention is for two electrode single gap capillary pipe structures，Described big current loop includes the first electric capacity C1、Inductance Lo、Anode tap 1、Cathode terminal 2 and resistance R，Described pluse output circuit includes pulse transformer T、IGCT SCR、Diode D and the second electric capacity C2，Wherein，In pulse transformer T, one end of primary side winding is connected with the anode of diode D and one end of the second electric capacity C2，The other end of the second electric capacity C2 and the negative electrode of diode D are connected with the anode of IGCT SCR，The negative electrode of IGCT SCR is connected with the other end of primary side winding in pulse transformer T，In pulse transformer T, one end of vice-side winding is connected with cathode terminal 2，In pulse transformer T, the other end of vice-side winding is connected with one end of resistance R，The other end of resistance R and one end ground connection of the first electric capacity C1，The other end of the first electric capacity C1 is connected with one end of inductance Lo，The other end of inductance Lo is connected with anode tap 1.
It should be noted that the number of turn of vice-side winding is 10-50 circle in pulse transformer T, in pulse transformer T, the number of turn of primary side winding is 1-5 circle；The output voltage of pulse transformer T is 20kV～300kV；The capacity of the second electric capacity C2 is 100nF～10 μ F, and charging voltage is 2kV～20kV；The capacitance of the first electric capacity C1 is 10 μ F～1000 μ F, and charging voltage is 1kV～50kV；The inductance value of inductance Lo is 1 μ H～100 μ H；The resistance of resistance R is 0.1 Ω～10 Ω.
Diode D hinders discharge voltage and current oscillation in pluse output circuit, it is prevented that the saturated and reset that the magnetic core of pulse transformer T repeats in discharge process；The vice-side winding of pulse transformer T is converted to pulsactor after output high-voltage pulse, regulates big current loop output current wave and current amplitude together with inductance Lo.For reducing the inductance of pulse transformer T vice-side winding, affect big current loop output electric current pulsewidth and current amplitude, the number of turn of pulse transformer T vice-side winding is 10～50 circles, and owing to the number of turn of vice-side winding is limited, the first electric capacity C1 charging voltage increases to 1kV～50kV；The primary side winding number of turn is 1～5 circle；Primary side winding and vice-side winding all adopt high-voltage conducting wires coiling, and vice-side winding exportable voltage peak under idle condition is 20kV～300kV.During electric discharge, the control termination of IGCT SCR receives trigger command, second electric capacity C2 discharges via the primary side winding of IGCT SCR pulse transformer T, the vice-side winding output high-voltage pulse of pulse transformer T, making capillary gap passage edge flashing, after clearance channel edge flashing forms conductive channel, the magnetic core of pulse transformer T is rapidly saturated, clearance channel is discharged by the first electric capacity C1 immediately by the vice-side winding of pulse transformer T and resistance R, forms the RLC electric discharge of big current loop.
Embodiment two
nullWith reference to Fig. 2，When the present invention is for three electrode two gap capillary pipe structures，Described big current loop includes the first electric capacity C1、Inductance Lo、Anode tap 1、Cathode terminal 2、Target 3 and resistance R，Described pluse output circuit includes pulse transformer T、IGCT SCR、Diode D and the second electric capacity C2，Wherein，In pulse transformer T, one end of primary side winding is connected with the anode of diode D and one end of the second electric capacity C2，The other end of the second electric capacity C2 and the negative electrode of diode D are connected with the anode of IGCT SCR，The negative electrode of IGCT SCR is connected with the other end of primary side winding in pulse transformer T，Target 3 is connected with one end of vice-side winding in pulse transformer T，In pulse transformer T, the other end of vice-side winding is connected with one end of cathode terminal 2 and resistance R，The other end of resistance R and one end ground connection of the first electric capacity C1，The other end of the first electric capacity C1 is connected with one end of inductance Lo，The other end of inductance Lo is connected with anode tap 1.
It should be noted that the number of turn of vice-side winding is 10-50 circle in pulse transformer T, in pulse transformer T, the number of turn of primary side winding is 1-5 circle；The output voltage of pulse transformer T is 20kV～300kV；The capacity of the second electric capacity C2 is 100nF～10 μ F, and charging voltage is 2kV～20kV；The capacitance of the first electric capacity C1 is 10 μ F～1000 μ F, and charging voltage is 1kV～50kV；The inductance value of inductance Lo is 1 μ H～100 μ H；The resistance of resistance R is 0.1 Ω～10 Ω.
Capillary channel is divided into two gaps by target 3, and namely anode tap 1 and target 3 constitute short air gap passage, and cathode terminal 2 and target 3 constitute long gap passage.Diode D hinders discharge voltage and current oscillation in pluse output circuit, it is prevented that the saturated and reset that the magnetic core of pulse transformer T repeats in discharge process；The vice-side winding of pulse transformer T is connected with resistance R with after long gap passage parallel connection；The capacitance of the first electric capacity C1 is 10 μ F～1000 μ F, and charging voltage is 1kV～50kV；The vice-side winding of resistance R and pulse transformer T is connected；The vice-side winding of pulse transformer T is converted to pulsactor after output high-voltage pulse, and regulates current waveform and the current amplitude of the output of big current loop together with inductance Lo；For reducing the vice-side winding inductance of pulse transformer T, affect big current loop output electric current pulsewidth and current amplitude, the number of turn of the vice-side winding of pulse transformer T is only 10～50 circles, owing to the number of turn of vice-side winding is limited, the charging voltage of the first electric capacity C1 increases to 1kV～50kV, and the number of turn of primary side winding is 1～5 circle；Primary side winding and vice-side winding all adopt high-voltage conducting wires coiling, and vice-side winding exportable voltage peak under idle condition is about 20kV～300kV；During electric discharge, the control termination of IGCT SCR receives trigger command, second electric capacity C2 discharges via the primary side winding of IGCT SCR pulse transformer T, the vice-side winding output high-voltage pulse of pulse transformer T makes short air gap passage edge flashing, after short air gap passage edge flashing forms conductive channel, the magnetic core of pulse transformer T is rapidly saturated, first electric capacity C1 is immediately by the vice-side winding of pulse transformer T, resistance R is to short air gap channel discharge, along with the ablation of pipe wall material is melted by short air gap passage electric arc, the plasma formed sprays to cathode terminal 2, when plasma to be sprayed arrives cathode terminal 2, long gap passage is shorted, form the long arc running through whole capillary channel, two gap capillary dischargings complete.
Claims (9)
1. the composite wave circuit for driving ablation-controlled arc to discharge, it is characterized in that, including pluse output circuit and big current loop, pluse output circuit is connected with big current loop, pluse output circuit completes the flashover breakdown to capillary gap passage, big current loop forms the afterflow to clearance channel after capillary channel punctures, and logical super-high-current completes the ablation of microcapillary tube wall material is melted in capillary cavity body.
null2. the composite wave circuit for driving ablation-controlled arc to discharge according to claim 1，It is characterized in that，When for two electrode single gap capillary pipe structures，Described big current loop includes the first electric capacity (C1)、Inductance (Lo)、Anode tap (1)、Cathode terminal (2) and resistance (R)，Described pluse output circuit includes pulse transformer (T)、IGCT (SCR)、Diode (D) and the second electric capacity (C2)，Wherein，In pulse transformer (T), one end of primary side winding is connected with the anode of diode (D) and one end of the second electric capacity (C2)，The other end of the second electric capacity (C2) and the negative electrode of diode (D) are connected with the anode of IGCT (SCR)，The negative electrode of IGCT (SCR) is connected with the other end of primary side winding in pulse transformer (T)，In pulse transformer (T), one end of vice-side winding is connected with cathode terminal (2)，In pulse transformer (T), the other end of vice-side winding is connected with one end of resistance (R)，The other end of resistance (R) and one end ground connection of the first electric capacity (C1)，The other end of the first electric capacity (C1) is connected with one end of inductance (Lo)，The other end of inductance (Lo) is connected with anode tap (1).
null3. the composite wave circuit for driving ablation-controlled arc to discharge according to claim 1，It is characterized in that，When for three electrode two gap capillary pipe structures，Described big current loop includes the first electric capacity (C1)、Inductance (Lo)、Anode tap (1)、Cathode terminal (2)、Target (3) and resistance (R)，Described pluse output circuit includes pulse transformer (T)、IGCT (SCR)、Diode (D) and the second electric capacity (C2)，Wherein，In pulse transformer (T), one end of primary side winding is connected with the anode of diode (D) and one end of the second electric capacity (C2)，The other end of the second electric capacity (C2) and the negative electrode of diode (D) are connected with the anode of IGCT (SCR)，The negative electrode of IGCT (SCR) is connected with the other end of primary side winding in pulse transformer (T)，Target (3) is connected with one end of vice-side winding in pulse transformer (T)，In pulse transformer (T), the other end of vice-side winding is connected with one end of cathode terminal (2) and resistance (R)，The other end of resistance (R) and one end ground connection of the first electric capacity (C1)，The other end of the first electric capacity (C1) is connected with one end of inductance (Lo)，The other end of inductance (Lo) is connected with anode tap (1).
4. the composite wave circuit for driving ablation-controlled arc to discharge according to Claims 2 or 3, it is characterized in that, in pulse transformer (T), the number of turn of vice-side winding is 10-50 circle, and in pulse transformer (T), the number of turn of primary side winding is 1-5 circle.
5. the composite wave circuit for driving ablation-controlled arc to discharge according to Claims 2 or 3, it is characterised in that the output voltage of pulse transformer (T) is 20kV～300kV.
6. the composite wave circuit for driving ablation-controlled arc to discharge according to Claims 2 or 3, it is characterised in that the capacity of the second electric capacity (C2) is 100nF～10 μ F, and charging voltage is 2kV～20kV.
7. the composite wave circuit for driving ablation-controlled arc to discharge according to Claims 2 or 3, it is characterised in that the capacitance of the first electric capacity (C1) is 10 μ F～1000 μ F, and charging voltage is 1kV～50kV.
8. the composite wave circuit for driving ablation-controlled arc to discharge according to Claims 2 or 3, it is characterised in that the inductance value of inductance (Lo) is 1 μ H～100 μ H.
9. the composite wave circuit for driving ablation-controlled arc to discharge according to Claims 2 or 3, it is characterised in that the resistance of resistance (R) is 0.1 Ω～10 Ω.
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| CN201610256978.3A CN105763096B (en) | 2016-04-22 | 2016-04-22 | A kind of combination wave circuit for driving ablation-controlled arc to discharge |
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| CN201610256978.3A CN105763096B (en) | 2016-04-22 | 2016-04-22 | A kind of combination wave circuit for driving ablation-controlled arc to discharge |
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| CN105763096B CN105763096B (en) | 2018-07-17 |
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| CN108322988A (en) * | 2018-04-12 | 2018-07-24 | 西安交通大学 | A kind of commutation switch device suitable for flexible DC power transmission dc circuit breaker |
| CN112118664A (en) * | 2020-09-08 | 2020-12-22 | 西安交通大学 | Double-path single-gap plasma jet device and application thereof |
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| CN113347774A (en) * | 2021-05-24 | 2021-09-03 | 西安交通大学 | Bipolar continuous capillary plasma jet trigger device and trigger method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112118664A (en) * | 2020-09-08 | 2020-12-22 | 西安交通大学 | Double-path single-gap plasma jet device and application thereof |
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| CN113347774A (en) * | 2021-05-24 | 2021-09-03 | 西安交通大学 | Bipolar continuous capillary plasma jet trigger device and trigger method |
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