CN208273330U - A kind of corona discharge pulse plasma electrical source reactive energy recovery circuit - Google Patents
A kind of corona discharge pulse plasma electrical source reactive energy recovery circuit Download PDFInfo
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- CN208273330U CN208273330U CN201820917163.XU CN201820917163U CN208273330U CN 208273330 U CN208273330 U CN 208273330U CN 201820917163 U CN201820917163 U CN 201820917163U CN 208273330 U CN208273330 U CN 208273330U
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- electrical source
- energy
- recovery circuit
- corona discharge
- reactive energy
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Abstract
The utility model provides a kind of corona discharge pulse plasma electrical source reactive energy recovery circuit, belongs to atmosphere pollution purification techniques field.It solves the problems, such as that existing plasma discharging teclmiques energy consumption high usage is low.This corona discharge pulse plasma electrical source reactive energy recovery circuit includes: net side three-winding transformer part, AC/DC rectifier part, nanosecond forward position impulse generator part, truncation discharge switch part and has energy-storage capacitor Cdc2DC/AC inverter section.The utility model has the advantage of pulse areas to be substantially reduced；Remaining quadergy all recycles, and has fed back to 380V AC power source by inverter.
Description
Technical field
The utility model belongs to atmosphere pollution purification techniques field, be related to a kind of corona discharge pulse plasma electrical source without
Function energy recovery circuit for electric.
Background technique
Corona discharge pulse technology is applied to the desulphurization denitration of coal-fired plant flue gas earliest.It is to utilize high voltage burst pulse
It discharges in gas, a large amount of high energy electrons (5-20eV) is generated by the process of the propagation of streamer, these high energy electrons are enough to beat
Open the chemical bond of many background gas molecules.The technology can be applied to sewage treatment plant, petrochemical industry, pharmacy, sewage treatment,
Coating, leather processing, photosensitive material, automobile manufacture, food processing factory, printing and dyeing mill, destructor plant, slaughterhouse, penkeeping
Many places such as field, fish processing plant, feed-processing plant.Plasma electrical source also rests on laboratory stage at present, not yet greatly
Technical scale application.
The technological challenge that large-scale application faces in environmental improvement industry of impulse electric corona plasma technology has:
1) energy consumption is high.Pulse plasma power has generallyd use magnetic compression switching technique.Since magnetic switch has unidirectionally
Conduction property, therefore most energy on reactor cannot be recycled well, can only finally be turned by bleeder resistance
Turn to thermal energy.Entirely different with high-frequency resonant AC power source, the electric field energy storage on reactor cannot pass through the tradition such as natural resonance
Technological means feedback feeder ear.
2) rise time.Pulse plasma power mostly uses series resonance operating mode, and load voltage waveform is sine
Wave, it is difficult to meet ns grades of rise time requirements.Rising front is steeper, the streamer-discahrge voltage advance notice of plasma electrical source, environment
Regulation effect is better.
3) pulse-width controlled technology.Under experimental condition of the pulse width no more than 1us, the pulse width of plasma power supply is got over
Greatly, the streamer-discahrge time continues more to grow, and the ozone occurrence quantity in reactor is bigger, and environmental improvement effect is better；But if
Pulse width is too big, and electrode is possible to enter spark discharge region in reactor, other than being unfavorable for ozone and generating, can also make
It generates heat at reactor.
4) load matched.Reactor can be equivalent to the parallel model of equivalent capacity and variable resistance.Only reactor is defeated
Enter impedance and power supply output impedance reaches matching status, the output power of power supply could be maximum, and the ozone in reactor is imitated
Rate could highest.
Utility model content
The purpose of this utility model is the problem low for existing plasma discharging teclmiques energy consumption high usage, and is mentioned
A kind of corona discharge pulse plasma electrical source reactive energy time that can be recycled to reactive power remaining in reactor is gone out
Receive circuit.
The purpose of this utility model can be realized by the following technical scheme:
A kind of corona discharge pulse plasma electrical source reactive energy recovery circuit, which is characterized in that it includes:
Net side three-winding transformer part, is connected with external three phase mains, provides electric energy；
AC/DC rectifier part, between net side three-winding transformer part and nanosecond forward position impulse generator part,
AC conversion for exporting net side three-winding transformer part supplies nanosecond forward position impulse generator part at direct current；
Nanosecond forward position impulse generator part is for voltage waveform needed for generating plasma electrochemical reaction；
Remaining reactive energy in nanosecond forward position impulse generator part is recycled to energy storage electricity by truncation discharge switch part
Container Cdc2In；
DC/AC inverter section has energy-storage capacitor Cdc2, and the reactive energy of recycling can be fed back to AC network.
As a preference, the truncation discharge switch part includes electronic switch T1With resistance Rk, the two series connection.
As a preference, the truncation discharge switch part packet magnetic switch Lm3With resistance Rk, the two series connection.Truncation
Discharge switch part can use above two form, all be that magnetic switch L is utilizedm3With electronic switch T1One-way conduction it is special
Property, the remaining reactive power in reactor load is transferred to storage Cdc2In.Meanwhile it ensure that reactor voltage begins
A specific DC level V is maintained eventuallydc2On.
As a preference, the DC/AC inverter section includes inverter B2, inverter B2With energy-storage capacitor Cdc2
It is in parallel.
As a preference, the DC/AC inverter section further includes overvoltage crowbar, the overvoltage crowbar packet
Include electric protection switch T2With resistance Rp, the two concatenation after with energy-storage capacitor Cdc2It is in parallel.The purpose of overvoltage crowbar is anti-
Only inverter B2Failure.In B2Under fault condition, if reactor dump energy persistently injects DC energy storage capacitor Cdc2, then direct current
Busbar voltage can continue to increase.If the pressure resistance of DC bus-bar voltage high-voltage inverter thyristor rectifier element, will result in inverse
Become bridge B2Permanent damages.
Different from traditional plasma power supply, the utility model patent proposes a kind of operation side of " pulse+direct current "
Formula, under this operational mode, reactor both end voltage maintains a DC level always.In this way, not only reducing pulse electricity
The power and voltage class in source, but also magnetic switch and pulse transformer magnetic reset can be given.Pulse area is substantially reduced；It is remaining
Quadergy all recycles, and has fed back to 380V AC power source by inverter.Do not considering IGBT switch, pulse magnetic cell etc.
Under the premise of calorific value, the theoretical efficiency of plasma electrical source reaches 100%.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model in embodiment 1.
Fig. 2 is the circuit diagram of the utility model in embodiment 2.
Fig. 3 is the operating voltage waveform diagram of the prior art.
Fig. 4 is the operating voltage waveform diagram of the utility model.
Fig. 5 is the voltage simple view of the utility model each section.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment 1
As shown in Figure 1, this corona discharge pulse plasma electrical source reactive energy recovery circuit includes sequentially connected net
Side three-winding transformer part, AC/DC rectifier part, nanosecond forward position impulse generator part, truncation discharge switch part and
DC/AC inverter section.Net side three-winding transformer part side is connected with external three phase mains, and the other side and AC/DC are rectified
Device part is adjacent, for providing electric energy；AC/DC rectifier part is used for the alternating current for exporting net side three-winding transformer part
It is converted to direct current supply nanosecond forward position impulse generator part；Nanosecond forward position impulse generator part is for generating plasma
Voltage waveform needed for electrochemical reaction；Truncation discharge switch part is used for remaining nothing in nanosecond forward position impulse generator part
Function electric energy is recycled to energy-storage capacitor Cdc2In；DC/AC inverter section has energy-storage capacitor Cdc2, and can be by the nothing of recycling
Function electric energy feedback is to 308V AC network.
In the present embodiment, truncation discharge switch part includes electronic switch T1With resistance Rk, reaction is connected to after the two series connection
Device load and storage Cdc2One end, DC/AC inverter section include inverter B2, energy-storage capacitor Cdc2, Electronic Protection
Switch T2With resistance Rp, electric protection switch T2With resistance RpAfter concatenation with energy-storage capacitor Cdc2And inverter B2It is in parallel.
Traditional plasma operating supply voltage waveform is as shown in Figure 3.Show that only hatched area is only note in figure
Enter the active power of reactor, remaining overwhelming majority energy is discharged resistance consumption and falls.The active conversion of this pulse power
Efficiency is very low, to constrain the popularization and application of impulse electric corona plasma power technology.
As shown in figure 4, constituting sharp contrast with Fig. 3: 1) pulse area is substantially reduced；2) remaining quadergy is all returned
It receives, 380V AC power source has been fed back to by inverter.In the premise for not considering the calorific values such as IGBT switch, pulse magnetic cell
Under, the theoretical efficiency of plasma electrical source reaches 100%.
Working principle:
As shown in figure 5, in pulse VpBefore arriving, DC power supply VdcMake magnetic switch Lm1And Lm2In reverse-bias state.
In order to limit the peak value of reversed exciting current, need in DC power output end 1 current-limiting resistance of series connection.Pulse VpAfter, T1
Electronic switch movement, pulse voltage are DC voltage V by truncation, rapid decreasedc2.DC voltage Vdc2Size usually require root
It is determined according to live operating condition and smoke components.
Generally, discharge electronic switch T1It needs to realize by more Thyristor series connection.
Usually, it is desirable that B2Invertor operation is in pressure stabilizing control model, that is to say, that Cdc2Both ends busbar voltage variation range
Less.If Cdc2Bus is higher than rated operational voltage, then energy is fed back to AC network by inverter；If Cdc2Busbar voltage
It is abnormal, it is higher than overvoltage protection value, then electric protection switch T2Movement.
Embodiment 2
As shown in Fig. 2, in the present embodiment, the truncation discharge switch part packet magnetic switch Lm3With resistance Rk, the two string
Connection.Also with magnetic switch Lm3One-way conduction characteristic, by the remaining reactive power in reactor load be transferred to storage electricity
Container Cdc2In.
It should be understood that in claims, specification of the utility model, all " including ... " should be understood as out
The meaning of formula is put, that is, its meaning is equal to " at least containing ... ", but should not be understood as enclosed meaning, i.e. its meaning
It should not be construed " only including ... ".
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (5)
1. a kind of corona discharge pulse plasma electrical source reactive energy recovery circuit, which is characterized in that it includes:
Net side three-winding transformer part, is connected with external three phase mains, provides electric energy；
AC/DC rectifier part is used between net side three-winding transformer part and nanosecond forward position impulse generator part
The AC conversion of net side three-winding transformer part output is supplied into nanosecond forward position impulse generator part at direct current；
Nanosecond forward position impulse generator part is for voltage waveform needed for generating plasma electrochemical reaction；
Remaining reactive energy in nanosecond forward position impulse generator part is recycled to energy-storage capacitor by truncation discharge switch part
Cdc2In；
DC/AC inverter section has energy-storage capacitor Cdc2, and the reactive energy of recycling can be fed back to AC network.
2. a kind of corona discharge pulse plasma electrical source reactive energy recovery circuit according to claim 1, feature
It is, the truncation discharge switch part includes electronic switch T1With resistance Rk, the two series connection.
3. a kind of corona discharge pulse plasma electrical source reactive energy recovery circuit according to claim 1, feature
It is, the truncation discharge switch part packet magnetic switch Lm3With resistance Rk, the two series connection.
4. a kind of corona discharge pulse plasma electrical source reactive energy recovery circuit according to claim 1 or 2 or 3,
It is characterized in that, the DC/AC inverter section includes inverter B2With energy-storage capacitor Cdc2, inverter B2With storage capacitor
Device Cdc2It is in parallel.
5. a kind of corona discharge pulse plasma electrical source reactive energy recovery circuit according to claim 4, feature
It is, the DC/AC inverter section further includes overvoltage crowbar, which includes electric protection switch T2
With resistance Rp, the two concatenation after with energy-storage capacitor Cdc2It is in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820917163.XU CN208273330U (en) | 2018-06-13 | 2018-06-13 | A kind of corona discharge pulse plasma electrical source reactive energy recovery circuit |
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|---|---|---|---|
| CN201820917163.XU CN208273330U (en) | 2018-06-13 | 2018-06-13 | A kind of corona discharge pulse plasma electrical source reactive energy recovery circuit |
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| CN208273330U true CN208273330U (en) | 2018-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108684128A (en) * | 2018-06-13 | 2018-10-19 | 浙江大维高新技术股份有限公司 | A kind of corona discharge pulse plasma electrical source reactive energy recovery circuit |
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2018
- 2018-06-13 CN CN201820917163.XU patent/CN208273330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108684128A (en) * | 2018-06-13 | 2018-10-19 | 浙江大维高新技术股份有限公司 | A kind of corona discharge pulse plasma electrical source reactive energy recovery circuit |
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