CN209516970U - A kind of corona discharge pulse plasma electrical source - Google Patents
A kind of corona discharge pulse plasma electrical source Download PDFInfo
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- CN209516970U CN209516970U CN201822115560.8U CN201822115560U CN209516970U CN 209516970 U CN209516970 U CN 209516970U CN 201822115560 U CN201822115560 U CN 201822115560U CN 209516970 U CN209516970 U CN 209516970U
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Abstract
The utility model provides a kind of corona discharge pulse plasma electrical source, including three-phase main-frequency transformer module, AC/DC rectifier module, pulse generator module and discharge switch module；Three-phase main-frequency transformer module is connect with external three phase mains, for providing electric energy；For AC/DC rectifier module between three-phase main-frequency transformer module and pulse generator module, the alternating current for exporting three-phase main-frequency transformer module is converted into direct current, supplies pulse generator module；Pulse generator module includes concatenated first IGCT electronic switch and the 2nd IGCT electronic switch, and pulse generator module is for pulse voltage waveform needed for generating plasma electrochemical reaction；Discharge switch module is connect with pulse generator module, for discharging idle electricity remaining in pulse generator module；The plasma electrical source realizes the reduction of pulse voltage rise time, improves the streamer-discahrge voltage of plasma electrical source, improves the regulation effect of pollutant.
Description
Technical field
The utility model relates to atmosphere pollution purification techniques field, more particularly, to a kind of corona discharge pulse etc. from
Daughter power supply.
Background technique
Corona discharge pulse technology is applied to the desulphurization denitration of coal-fired plant flue gas earliest, which utilizes the narrow arteries and veins of high voltage
It is punched in gas and discharges, a large amount of high energy electrons are generated by the process of the propagation of streamer, these high energy electrons can be opened very much
The chemical bond of background gas molecule.Corona discharge pulse technology can be applied to sewage treatment plant, petrochemical industry, pharmacy, at sewage
Reason, coating, leather processing, photosensitive material, food processing factory, printing and dyeing mill, destructor plant, slaughterhouse, penkeeping field, fish
Many places such as processing factory, feed-processing plant.
Traditional impulse electric corona plasma power supply uses the scheme of IGBT electronic switch parallel connection, and in plasma electrical source
DC bus-bar voltage it is lower, pulse transformer no-load voltage ratio is larger, this will lead to the conversion of sharpening capacitor device to pulse transformer low pressure
The equivalent capacitance value of side is very big, and the pulse resonance period is longer, and the pulse voltage rise time will be longer, the stream of plasma electrical source
Light discharge voltage is lower, also results in environmental improvement effect poorer；Meanwhile the pulse current tolerance of IGBT electronic switch compared with
Difference, it is easy to enter and move back saturation region damage, constrain the maximum load capability of the pulse power；In addition, the pulse electricity at load both ends
Drops limit the lower range of pulse width control along always greater than rising edge.
Utility model content
The purpose of this utility model is to provide a kind of corona discharge pulse plasma electrical sources, solve current pulse electricity
Corona plasma electrical source leads to pulse resonance period length, environmental improvement due to the scheme using the parallel connection of IGBT electronic switch
The problem of effect difference.
To achieve the above object, the utility model provides a kind of corona discharge pulse plasma electrical source, including three-phase
Industrial Frequency Transformer module, AC/DC rectifier module, pulse generator module and discharge switch module；
The three-phase main-frequency transformer module, connect, for providing electric energy with external three phase mains；
The AC/DC rectifier module is used between the three-phase main-frequency transformer module and pulse generator module
It is converted into direct current in the alternating current for exporting the three-phase main-frequency transformer module, supplies pulse generator module；
The pulse generator module, including concatenated first IGCT electronic switch and the 2nd IGCT electronic switch, it is described
Pulse generator module is for pulse voltage waveform needed for generating plasma electrochemical reaction；
The discharge switch module, connect with the pulse generator module, for in the pulse generator module
Remaining idle electricity discharges.
Preferably, the discharge switch module includes the first magnetic compression switch, first resistor and first capacitor, wherein the
One resistance and first capacitor are in parallel, and switch series connection with first magnetic compression after parallel connection.
Preferably, the first IGCT electronic switch and the 2nd IGCT electronic switch include GCT semiconductor devices and
Gate-drive plate, the GCT semiconductor devices are connected with gate-drive plate by coaxial cable.
It preferably, include pulse transformer, the first IGCT electronic switch and second in the pulse generator module
IGCT electronic switch is composed in series the first series arm, and the both ends of the pulse transformer primary winding pass through the second capacitor respectively
It is connected with third capacitor and the first series arm, the both ends connection of the pulse transformer secondary winding the 4th capacitor in parallel,
5th capacitor and load Load.
It preferably, include AC/DC rectifier, second resistance, 3rd resistor, the 6th in the AC/DC rectifier module
Capacitor, the 7th capacitor, the first freewheeling diode, the second freewheeling diode, the first inductance and the second inductance, second resistance and the 6th
Capacitor composes in parallel the first parallel branch, and 3rd resistor and the 7th capacitor compose in parallel the second parallel branch, two pole of the first afterflow
Pipe and the first inductance in parallel form third parallel branch, the second freewheeling diode and the branch in parallel of the second inductance in parallel composition the 4th
Road, one end of the first parallel branch and the second parallel branch concatenation, the other end of the first parallel branch are connected to AC/DC rectifier
Between third parallel branch, the other end of the second parallel branch is connected between AC/DC rectifier and the 4th parallel branch.
The utility model compared with prior art, has the following advantages and outstanding effects:
Corona discharge pulse plasma electrical source provided by the utility model by using IGCT electronic switch tandem plan,
The pulse resonance period is reduced, to reduce the volume of magnetic compression switch and the residual induction amount of magnetic compression switch, is reduced
The pulse voltage rise time improves the streamer-discahrge voltage of plasma electrical source in this way, improves regulation effect；Meanwhile this reality
GCT semiconductor devices is connected with gate-drive plate separate type with novel IGCT electronic switch, is more conducive to IGCT electronics in this way
Switch heat dissipation, avoids the need for being cooled down using individual oil cooling machine.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of corona discharge pulse plasma electrical source disclosed in the utility model embodiment；
Fig. 2 is a kind of circuit diagram of corona discharge pulse plasma electrical source disclosed in the utility model embodiment.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figure 1, the utility model embodiment discloses a kind of corona discharge pulse plasma electrical source, including successively
Three-phase main-frequency transformer module 101, AC/DC rectifier module 102, pulse generator module 103 and the discharge switch mould of connection
Block 104, wherein three-phase main-frequency transformer module 101 is connect with external three phase mains, for providing electric energy；AC/DC rectifier mould
Block 102 is used to for the alternating current that three-phase main-frequency transformer module 101 exports to be converted into direct current, supplies pulse generator module
103；Pulse generator module 103 is for pulse voltage waveform needed for generating plasma electrochemical reaction, discharge switch mould
Block 104 is for discharging to remaining idle electricity in the pulse generator module 103.
As shown in Fig. 2, three-phase main-frequency becomes present embodiment discloses a kind of circuit of corona discharge pulse plasma electrical source
It includes AC/DC rectifier, resistance that depressor module 101, which includes in three-phase main-frequency transformer TR1, AC/DC rectifier module 102,
R1, resistance R2, capacitor Cd1, capacitor Cd2, inductance Ld1, inductance Ld2, sustained diode r1 and sustained diode r2.Its
In, resistance R1 and capacitor Cd1 compose in parallel the first parallel branch, and resistance R2 and capacitor Cd2 form the second parallel branch, and first simultaneously
The one end for joining branch connects the second parallel branch, and inductance Ld1 and sustained diode r1 form third parallel branch, inductance Ld2 and
Sustained diode r2 forms the 4th parallel branch, and one end of the first parallel branch connects the second parallel branch, and the other end is connected to
Between third parallel branch and AC/DC rectifier, the other end of the second parallel branch is connected to the 4th parallel branch and AC/DC is whole
It flows between device, the other end of third parallel branch and the 4th parallel branch is all connected with pulse generator module 103.
Pulse generator module 103 includes IGCT electronic switch S11, IGCT electronic switch S21, capacitor Cm1, capacitor
Cm2, pulse transformer TR2, capacitor C1, capacitor C2, magnetic compression switch Lm1, magnetic compression switch Lm2 and load Load, electric discharge are opened
Closing module 104 includes magnetic compression switch Lm3, resistance Rp and capacitor Cp.Wherein, IGCT electronic switch S11 and IGCT electronic cutting
Close S21 and be composed in series third series arm, and one end of third series arm be connected to third parallel branch and capacitor Cm1 it
Between, the other end is connected between the 4th parallel branch and capacitor Cm2, capacitor Cm1 and capacitor Cm2 respectively with pulse transformer TR2
One end of armature winding connects.The both ends of pulse transformer TR2 secondary windings are connected with capacitor C1 in parallel, capacitor C2, load
Load, resistance Rp and capacitor Cp, magnetic compression switch Lm1, magnetic compression switch Lm2 and magnetic compression switch Lm3 are series at pulse transforming
Between device TR2 secondary windings one end and capacitor Cp, and magnetic compression switch Lm1 is connected between capacitor C1 and capacitor C2, magnetic pressure
Contracting switch Lm2 is connected between capacitor C2 and load Load, and magnetic compression switch Lm3 is connected between load Load and resistance Rp.
After the load both ends Load are parallel with capacitor Cp, the pulse width of discharge voltage depends on the capacitor of load Load
The equivalent capacity after series connection with capacitor Cp makes harmonic period reduction of discharging in this way, then loads the decline of Load both end voltage
Along also further decreasing, the pulse width of discharge voltage also reduces.On the other hand, the disruptive critical voltage of corona discharge pulse with
Pulse width is closely related, i.e., pulse width is smaller, and breakdown voltage is higher, and the raising of breakdown voltage, which can not only increase electric discharge, to be had
Function power reduces the energy consumption of plasma electrical source, can also reduce the sensibility of polar curve installation error, corona discharge pulse is more
Stablize, greatly reduces project installation difficulty.
IGCT electronic switch S11 and IGCT electronic switch S21 is together in series by the present embodiment, rather than uses traditional pulse
The scheme of parallel IGBT electronic switch in corona discharge plasma power supply can increase direct current inlet highway voltage in this way,
The no-load voltage ratio of pulse transformer reduces, and the equivalent capacitance value that capacitor C1 is converted to pulse transformer low-pressure side reduces.Pulse transformer
Leakage inductance increase, the harmonic period in IGCT electronic switch circuit reduces, so the volume of magnetic compression switch Lm1 reduces, in this way
The residual induction amount after magnetic compression switch Lm1 saturation can be reduced, is accelerated in pulse voltage while reducing production cost
Forward position is risen, as the leakage inductance of magnetic compression switch Lm1 reduces, the volume of magnetic compression switch Lm2 also accordingly reduces, magnetic compression switch
The residual induction amount of Lm2 is also synchronous to be reduced, to realize the reduction of the rise time of load Load both end voltage, thus can
Keep the streamer-discahrge voltage of plasma electrical source higher, plasma electrical source is more preferable to the regulation effect of pollutant.
What the pulse current tolerance for the IGCT electronic switch that the present embodiment uses was used than traditional plasma power supply
IGBT electronic switch it is bigger, the load capacity of IGCT electronic switch can be improved in this way.Simultaneously as tradition IGCT electronic cutting
Pass is directly to weld GCT semiconductor devices and gate-drive plate, and IGCT electronic switch calorific value is larger, this just need using
Independent oil cooling machine cools down IGCT electronic switch, and such cost is significantly higher.The present embodiment will by coaxial wire
GCT semiconductor devices is connected with gate-drive plate separate type, and GCT semiconductor devices can be mounted on to fuel tank internal, door in this way
Pole driving plate is mounted in control cabinet, to solve the heat dissipation problem of IGCT electronic switch, while being convenient to IGCT electronic cutting
GCT semiconductor devices and pulse transformer inside the Pass, sharpening capacitor device C1, C2 integrated design, reduce loop inductance, accelerate
Rising edge of a pulse.
Corona discharge pulse plasma electrical source disclosed in the utility model embodiment is by using IGCT electronic switch string
Connection scheme reduces the pulse resonance period, so that the volume of magnetic compression switch and the residual induction amount of magnetic compression switch are reduced,
The pulse voltage rise time is reduced, can be improved the streamer-discahrge voltage of plasma electrical source in this way, improves regulation effect；Together
When, the IGCT electronic switch of the utility model connects GCT semiconductor devices with gate-drive plate separate type, is more conducive in this way
The heat dissipation of IGCT electronic switch, avoids the need for being cooled down using individual oil cooling machine；By in the load both ends Load electricity in parallel
Hold Cp and increases the strength of discharge of impulse electric corona to reduce the pulse width of discharge voltage.
Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects
Step is described in detail, it should be understood that being not limited to this foregoing is merely specific embodiment of the utility model
Utility model, all any modification, equivalent substitution, improvement and etc. within the principle of the utility model, done should be included in this
Within the protection scope of utility model.
Claims (5)
1. a kind of corona discharge pulse plasma electrical source, which is characterized in that whole including three-phase main-frequency transformer module, AC/DC
Flow device module, pulse generator module and discharge switch module；
The three-phase main-frequency transformer module, connect, for providing electric energy with external three phase mains；
The AC/DC rectifier module, between the three-phase main-frequency transformer module and pulse generator module, being used for will
The alternating current of the three-phase main-frequency transformer module output is converted into direct current, supplies pulse generator module；
The pulse generator module, including concatenated first IGCT electronic switch and the 2nd IGCT electronic switch, the pulse
Generator module is for pulse voltage waveform needed for generating plasma electrochemical reaction；
The discharge switch module, connect with the pulse generator module, for remaining in the pulse generator module
Idle electricity discharge.
2. a kind of corona discharge pulse plasma electrical source as described in claim 1, which is characterized in that the discharge switch mould
Block includes the first magnetic compression switch, first resistor and first capacitor, wherein first resistor and first capacitor are in parallel, and in parallel
It switchs and connects with first magnetic compression later.
3. a kind of corona discharge pulse plasma electrical source as described in claim 1, which is characterized in that the first IGCT electricity
Sub switch and the 2nd IGCT electronic switch include GCT semiconductor devices and gate-drive plate, the GCT semiconductor devices and
Gate-drive plate is connected by coaxial cable.
4. a kind of corona discharge pulse plasma electrical source as described in claim 1, which is characterized in that the impulse generator
It include pulse transformer in module, the first IGCT electronic switch and the 2nd IGCT electronic switch are composed in series the first series connection branch
Road, the both ends of the pulse transformer primary winding pass through the second capacitor respectively and connect with third capacitor and the first series arm,
The both ends connection of the pulse transformer secondary winding the 4th capacitor in parallel, the 5th capacitor and load Load.
5. a kind of corona discharge pulse plasma electrical source as described in claim 1, which is characterized in that the AC/DC rectification
Include in device module AC/DC rectifier, second resistance, 3rd resistor, the 6th capacitor, the 7th capacitor, the first freewheeling diode,
Second freewheeling diode, the first inductance and the second inductance, second resistance and the 6th capacitor compose in parallel the first parallel branch, third
Resistance and the 7th capacitor compose in parallel the second parallel branch, and the first freewheeling diode and the first inductance in parallel form third parallel connection branch
Road, the second freewheeling diode and the second inductance in parallel form the 4th parallel branch, one end of the first parallel branch and the second parallel connection
Branch concatenation, the other end of the first parallel branch are connected between AC/DC rectifier and third parallel branch, the second parallel branch
The other end be connected between AC/DC rectifier and the 4th parallel branch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822115560.8U CN209516970U (en) | 2018-12-17 | 2018-12-17 | A kind of corona discharge pulse plasma electrical source |
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| CN201822115560.8U CN209516970U (en) | 2018-12-17 | 2018-12-17 | A kind of corona discharge pulse plasma electrical source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861578A (en) * | 2018-12-17 | 2019-06-07 | 浙江大维高新技术股份有限公司 | A kind of corona discharge pulse plasma electrical source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861578A (en) * | 2018-12-17 | 2019-06-07 | 浙江大维高新技术股份有限公司 | A kind of corona discharge pulse plasma electrical source |
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