CN103401468B - A kind of plasma arc striking circuit - Google Patents
A kind of plasma arc striking circuit Download PDFInfo
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- CN103401468B CN103401468B CN201310320951.2A CN201310320951A CN103401468B CN 103401468 B CN103401468 B CN 103401468B CN 201310320951 A CN201310320951 A CN 201310320951A CN 103401468 B CN103401468 B CN 103401468B
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- inductance
- circuit
- diode
- plasma arc
- arc striking
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Abstract
The invention provides a kind of plasma arc striking circuit, comprise voltage-dropping type constant-current source circuit (1) and high-voltage pulse electric source circuit (2), voltage-dropping type constant-current source circuit (1) comprise controller (11), current sampling circuit (13), with centre tapped coupling inductance L
1and inductance L
2, and the diode D that is connected between direct voltage source (DC) both positive and negative polarity
1with the first switching device, high-voltage pulse electric source circuit (2) comprises triggering driver module (21), second switch device, inductance L for sending pulse signal
1and inductance L
2, play the function of arc power in order to realize plasma, and reduce overall weight, high-voltage pulse power source and constant-current source are integrated by the present invention, thus realize the dual-use function of single module, and avoid the problem that handoff procedure brings, module is simple and reliable.
Description
Technical field
The present invention relates to plasma arc striking circuit.
Background technology
Plasma obtains in recent years and applies comparatively widely, comprises high-temperature plasma cutting technique, Aero-Space plasma propulsion technology, medicine equipment sterilize technology of plasma etc.The Energy control technology of such plasma is a ring important in plasma Risk factor, and becomes the technological difficulties of the sector.
First traditional plasma arc striking circuit needs to produce pulsed high pressure at output, by gaseous plasma, makes power supply realize current stabilization afterwards export according to different needs of work and application background.Therefore, plasma arc striking circuit need have the dual-use function of high-voltage pulse power source and constant-current source concurrently.
In existing plasma arc striking circuit, high-voltage pulse power source will need after gas ionization to switch to constant-current source.Traditional plasma plays arc power and high-voltage pulse power source and constant-current source is designed respectively, because the output acting in conjunction of two power supplys is in same load, be equivalent to two power supplys in parallel at output, this just causes the design of the commutation circuit between two power supplys comparatively complicated, and device needs withstand voltage higher, also brings certain difficulty to parts selection.
Summary of the invention
In order to solve in existing plasma arc striking circuit, the technical problem that commutation circuit complex structure between high-voltage pulse power source and constant-current source, device need withstand voltage high, the present invention proposes a kind of plasma arc striking circuit, comprise voltage-dropping type constant-current source circuit and high-voltage pulse electric source circuit, voltage-dropping type constant-current source circuit comprise controller, current sampling circuit, with centre tapped coupling inductance L
1and inductance L
2, and the diode D that is connected between direct voltage source both positive and negative polarity
1with the first switching device, diode D
1negative pole connect the positive pole of direct voltage source, diode D
1positive pole connect one end of the first switching device, the negative pole of another termination direct voltage source of the first switching device, the control termination controller of the first switching device, current sampling circuit is located at the load outputs of plasma arc striking circuit, and it exports termination controller; High-voltage pulse electric source circuit comprises triggering driver module, second switch device, inductance L
1and inductance L
2, inductance L
1a terminating diode D
1negative pole, inductance L
1the other end respectively with inductance L
2different name end be connected with second switch device, inductance L
2the other end as the output of plasma arc striking circuit, the other end of second switch device respectively with diode D
1positive pole be connected with the first switching device, the control end of second switch device is connected with triggering driver module.
Further, trigger drive circuit and comprise the pulse shaper, rising edge single-shot trigger circuit and the drive circuit that connect successively, pulse shaper receives external high pressure command pulse, the control end of the output termination second switch device of drive circuit.
Further, driver is connected between the first switching device and controller.
Further, inductance L
1, second switch device and inductance L
2between be connected to diode D
2, diode D
2negative pole and inductance L
2connect.
Further, inductance L
1, inductance L
2and be connected to diode D between second switch device
3, diode D
3negative pole be connected with second switch device.
Further, the first switching device is metal-oxide-semiconductor M
1and/or second switch device is metal-oxide-semiconductor M
2.
Further, described plasma arc striking circuit also comprises the absorbing circuit be connected between second switch device two ends.
Further, absorbing circuit comprises diode D
4, electric capacity C and resistance R, resistance C and resistance R meet rear one end and diode D
4negative pole connect, the other end is connected with one end of second switch device, diode D
4positive pole connect the other end of second switch device.
Further, inductance L
1, inductance L
2following relation is met with electric capacity C:
When power supply enters the operating state of current stabilization output, then have
L
1+L
2≥D*(1-D)*2V
i/(△I
o*f)
Wherein, V
i, I
owith △ I
obe respectively the input voltage of plasma arc striking circuit, output current is and output current ripple, D is constant-current source stable state duty ratio, and f is the switching frequency of the first switching device;
When high-voltage pulse power source drive singal is high level, then have
V
o=(n-1)*V
i
Wherein, V
ofor the output voltage of high-voltage pulse electric source circuit is, n is inductance L
1with L
2the turn ratio;
When high-voltage pulse power source drive singal is low level, then have
I
1 2*L
1/2=(V
C 2-V
i 2)*C/2
Wherein, I
1for inductance L
1on electric current, V
cfor the voltage on electric capacity C.
Further, resistance R is 10K Ω.
The beneficial effect of tool of the present invention is: the function playing arc power in order to realize plasma, and reduce overall weight, high-voltage pulse power source and constant-current source are integrated by the present invention, thus realize the dual-use function of single module, avoid the problem that handoff procedure brings, and without the need to high toggle switch, module is simple and reliable.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of embodiment of the present invention plasma arc striking circuit;
Fig. 2 is for triggering the electrical block diagram of driver module in the circuit shown in Fig. 1;
Fig. 3 is the metal-oxide-semiconductor M when IGNITION CONTROL pulse enable of the circuit shown in Fig. 1
2circuit conditions after conducting;
Fig. 4 is the metal-oxide-semiconductor M after firing pulse disappears of the circuit shown in Fig. 1
2circuit conditions after disconnecting.
Embodiment
Illustrate below in conjunction with accompanying drawing and embodiment the present invention is further described.
As shown in Figure 1, the plasma arc striking circuit of the embodiment of the present invention, comprise voltage-dropping type constant-current source circuit 1 and high-voltage pulse electric source circuit 2, voltage-dropping type constant-current source circuit 1 comprise controller 11, driver 12, current sampling circuit 13, with centre tapped coupling inductance L
1and inductance L
2, and the diode D that is connected between direct voltage source DC both positive and negative polarity
1with the first switching device, diode D
1negative pole connect the positive pole of direct voltage source DC, diode D
1positive pole connect one end of the first switching device, the negative pole of another termination direct voltage source DC of the first switching device, the control end of the first switching device connects controller 11 through driver 12, and current sampling circuit 13 is located at the load outputs of plasma arc striking circuit, and it exports termination controller 11; High-voltage pulse electric source circuit 2 comprises triggering driver module 21, second switch device, inductance L
1and inductance L
2, inductance L
1a terminating diode D
1negative pole, inductance L
1the other end respectively with inductance L
2different name end be connected with second switch device, inductance L
2the other end as the output of plasma arc striking circuit, the other end of second switch device respectively with diode D
1positive pole be connected with the first switching device, the control end of second switch device is connected with triggering driver module 21.Metal-oxide-semiconductor M selected by first switching device
1, second switch device selects metal-oxide-semiconductor M
2.
As shown in Figure 1, inductance L
1with metal-oxide-semiconductor M
2tandem place of drain electrode and inductance L
2between be connected to diode D
2, diode D
2negative pole and inductance L
2connect.Inductance L
1with diode D
2tandem place and metal-oxide-semiconductor M
2diode D is connected between drain electrode
3, diode D
3negative pole and metal-oxide-semiconductor M
2drain electrode connects.
As shown in Figure 2, trigger driver module 21 and comprise the pulse shaper 211, rising edge single-shot trigger circuit 212 and the drive circuit 213 that connect successively, pulse shaper 211 is as required from external reception high pressure command pulse, and drive circuit 213 meets metal-oxide-semiconductor M
2grid.Wherein pulse shaper 21 can adopt two not gate Q of serial connection
1, Q
2.
Preferably, the plasma arc striking circuit of the present embodiment also comprises the absorbing circuit be connected between second switch device two ends.Absorbing circuit comprises diode D
4, electric capacity C and resistance R, resistance C and resistance R meet rear one end and diode D
4negative pole connect, the other end and metal-oxide-semiconductor M
2source class connects, diode D
4positive pole and metal-oxide-semiconductor M
2with diode D after drain electrode tandem
3negative pole connect.
As shown in Figure 1, it can realize high-voltage pulse power source and constant-current source two kinds of functions to the plasma arc striking circuit topological structure of the present embodiment, L
1with L
2for with centre tapped coupling inductance.First, when plasma arc striking circuit does not work, control the controller 11 of constant-current source current stabilization output due to output open circuit, current sampling circuit 13 is zero to the feedback signal of controller 11, and controller 11 controls metal-oxide-semiconductor M by driver 12
1be in the state of conducting always.When needs high-voltage pulse power source circuit working, peripheral circuit sends high pressure command pulse, through two not gate Q
1, Q
2carry out shaping to this pulse, afterwards, signal enters rising edge single-shot trigger circuit, produces the drive singal of certain duty ratio.As shown in Figure 3, when drive singal is high level, two inductance L
1, L
2the metal-oxide-semiconductor M at centre cap place
2conducting under the driving of firing pulse, by the inductance L of electrical power storage on former limit
1on, metal-oxide-semiconductor M
2closing time directly related with the size of storage power; Then, when drive singal is low level, metal-oxide-semiconductor M
2disconnect, as shown in Figure 4, make former limit inductance L
1the secondary inductance L of energy storage by being coupled with it
2voltage pump rise to required high pressure (can be arranged inductance L according to required boosting amplitude
1and inductance L
2the turn ratio), can load be realized plasmarized, herein, metal-oxide-semiconductor M
2the RCD at place
4as absorption circuit, reduce the voltage stress to metal-oxide-semiconductor in this high pressure production process.
After output load success plasma, direct voltage source DC enters the operating state that current stabilization exports, metal-oxide-semiconductor M now
2be in off-state, L
1, L
2jointly as the output inductor of constant-current source, can from outputting inductance L
2place carries out current sample, by closed-loop current control device, controls metal-oxide-semiconductor M
1oN time, with reach current stabilization export object.
Below introduce inductance L
1, L
2, C choose method:
First, when power supply enters the operating state of current stabilization output, L
1, L
2connect as the output inductor of constant-current source, if the input voltage of plasma arc striking circuit is V
i, output current is I
o, output current ripple is △ I
o, constant-current source stable state duty ratio is D, metal-oxide-semiconductor M
1switching frequency be f, then have:
L
1+L
2≥D*(1-D)*2V
i/(△I
o*f)
If the output voltage of high-voltage pulse electric source circuit is V
o, inductance L
1with L
2the turn ratio be n, inductance L
1on electric current be I
1, on electric capacity C, voltage is V
c; When high-voltage pulse power source drive singal is high level, then have:
V
o=(n-1)*V
i
When high-voltage pulse power source drive singal is low level, then have:
I
1 2*L
1/2=(V
C 2-V
i 2)*C/2
L can be selected according to above relational expression
1, L
2and the parameter of C, the R in circuit, when constant-current source normally works, will bring quiescent dissipation, and therefore resistance generally selects 10K about Ω.
Be in conjunction with concrete preferred implementation further description made for the present invention as said above, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, under the prerequisite not departing from design of the present invention and intension, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a plasma arc striking circuit, comprise voltage-dropping type constant-current source circuit (1) and high-voltage pulse electric source circuit (2), it is characterized in that: voltage-dropping type constant-current source circuit (1) comprise controller (11), current sampling circuit (13), with centre tapped coupling inductance L
1and inductance L
2, and the diode D that is connected between direct voltage source (DC) both positive and negative polarity
1with the first switching device, diode D
1negative pole connect the positive pole of direct voltage source (DC), diode D
1positive pole connect one end of the first switching device, the negative pole of another termination direct voltage source (DC) of the first switching device, the control termination controller (11) of the first switching device, current sampling circuit (13) is located at the load outputs of plasma arc striking circuit, the output termination controller (11) of current sampling circuit (13); High-voltage pulse electric source circuit (2) comprises triggering driver module (21), second switch device, inductance L
1and inductance L
2, inductance L
1terminating diode D of the same name
1negative pole, inductance L
1different name end respectively with inductance L
2same Name of Ends be connected with one end of second switch device, inductance L
2different name end as the output of plasma arc striking circuit, the other end of second switch device respectively with diode D
1positive pole be connected with one end of the first switching device, the control end of second switch device is connected with triggering driver module (21).
2. plasma arc striking circuit according to claim 1, it is characterized in that: trigger drive circuit (21) and comprise the pulse shaper (211), rising edge single-shot trigger circuit (212) and the drive circuit (213) that connect successively, pulse shaper (211) receives external high pressure command pulse, the control end of the output termination second switch device of drive circuit (213).
3. plasma arc striking circuit according to claim 1, is characterized in that: be connected to driver (12) between the first switching device and controller (11).
4. plasma arc striking circuit according to claim 1, is characterized in that: inductance L
1with inductance L
2between be connected to diode D
2, diode D
2negative pole and inductance L
2connect, diode D
2positive pole and inductance L
1connect.
5. plasma arc striking circuit according to claim 1, is characterized in that: inductance L
1and be connected to diode D between second switch device
3, diode D
3negative pole be connected with second switch device, diode D
3positive pole and inductance L
1connect.
6. plasma arc striking circuit according to claim 1, is characterized in that: the first switching device is metal-oxide-semiconductor M
1and/or second switch device is metal-oxide-semiconductor M
2.
7. plasma arc striking circuit according to claim 1, is characterized in that: also comprise the absorbing circuit be connected between second switch device two ends.
8. plasma arc striking circuit according to claim 7, is characterized in that: absorbing circuit comprises diode D
4, electric capacity C and resistance R, resistance C and resistance R meet rear one end and diode D
4negative pole connect, the other end is connected with one end of second switch device, diode D
4positive pole connect the other end of second switch device.
9. plasma arc striking circuit according to claim 8, is characterized in that: inductance L
1, inductance L
2following relation is met with electric capacity C:
When power supply enters the operating state of current stabilization output, then have
L
1+L
2≥D*(1-D)*2V
i/(△I
o*f)
Wherein, V
i, I
owith △ I
obe respectively the input voltage of plasma arc striking circuit, output current is and output current ripple, D is constant-current source stable state duty ratio, and f is the switching frequency of the first switching device;
When high-voltage pulse power source drive singal is high level, then have
V
o＝(n-1)*V
i
Wherein, V
ofor the output voltage of high-voltage pulse electric source circuit is, n is inductance L
1with L
2the turn ratio;
When high-voltage pulse power source drive singal is low level, then have
I
1 2*L
1/2＝(V
C 2-V
i 2)*C/2
Wherein, I
1for inductance L
1on electric current be I
1, the voltage on electric capacity C is V
c.
10. plasma arc striking circuit according to claim 8, is characterized in that: resistance R is 10K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310320951.2A CN103401468B (en) | 2013-07-29 | 2013-07-29 | A kind of plasma arc striking circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310320951.2A CN103401468B (en) | 2013-07-29 | 2013-07-29 | A kind of plasma arc striking circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103401468A CN103401468A (en) | 2013-11-20 |
| CN103401468B true CN103401468B (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310320951.2A Expired - Fee Related CN103401468B (en) | 2013-07-29 | 2013-07-29 | A kind of plasma arc striking circuit |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753386A (en) * | 2015-03-19 | 2015-07-01 | 唐山标先电子有限公司 | Pulse sputtering power source |
| CN108183623A (en) * | 2017-12-06 | 2018-06-19 | 山东航天电子技术研究所 | A kind of fast rising pulse source of high pressure |
| CN211476002U (en) * | 2019-11-06 | 2020-09-11 | 深圳驭龙电焰科技有限公司 | Ignition device and electric flame stove |
| CN111726024B (en) * | 2020-05-20 | 2021-12-21 | 深圳航天科技创新研究院 | Plasma pulse power supply |
| CN114070119B (en) * | 2022-01-13 | 2022-03-25 | 成都通用整流电器研究所 | Space-based aviation aircraft air orbit-transfer push-emission plasma power supply |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237125A (en) * | 2007-01-30 | 2008-08-06 | 夏普株式会社 | High voltage generating circuit, ion generating device and electrical apparatus |
| CN201776554U (en) * | 2010-08-27 | 2011-03-30 | 无锡华联科技集团有限公司 | Plasma arc striking device |
| CN201805367U (en) * | 2010-08-24 | 2011-04-20 | 合肥华耀电子工业有限公司 | Inductive energy storage microsecond level high-power pulse current source |
| CN202535294U (en) * | 2012-03-15 | 2012-11-14 | 重庆极光电器设备有限公司 | High-frequency inverter pulse power supply used in electrodeless lamps |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5069573B2 (en) * | 2008-01-28 | 2012-11-07 | パナソニック株式会社 | High pressure discharge lamp lighting device, lighting fixture |
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2013
- 2013-07-29 CN CN201310320951.2A patent/CN103401468B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237125A (en) * | 2007-01-30 | 2008-08-06 | 夏普株式会社 | High voltage generating circuit, ion generating device and electrical apparatus |
| CN201805367U (en) * | 2010-08-24 | 2011-04-20 | 合肥华耀电子工业有限公司 | Inductive energy storage microsecond level high-power pulse current source |
| CN201776554U (en) * | 2010-08-27 | 2011-03-30 | 无锡华联科技集团有限公司 | Plasma arc striking device |
| CN202535294U (en) * | 2012-03-15 | 2012-11-14 | 重庆极光电器设备有限公司 | High-frequency inverter pulse power supply used in electrodeless lamps |
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| CN103401468A (en) | 2013-11-20 |
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