CN204672440U - A kind of electrostatic precipitation micropulse power - Google Patents
A kind of electrostatic precipitation micropulse power Download PDFInfo
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- CN204672440U CN204672440U CN201520036196.XU CN201520036196U CN204672440U CN 204672440 U CN204672440 U CN 204672440U CN 201520036196 U CN201520036196 U CN 201520036196U CN 204672440 U CN204672440 U CN 204672440U
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Abstract
The utility model relates to a kind of electrostatic precipitation micropulse power, comprise dc source, high-frequency and high-voltage impulse power supply, coupling circuit and electrostatic precipitation circuit, described dc source, high-frequency and high-voltage impulse power supply and coupling circuit are in turn connected to form major loop, and described electrostatic precipitation circuit is connected with high-frequency and high-voltage impulse power supply with dc source respectively.Beneficial effect is: parallel circuit electrostatic precipitation being equivalent to an electric capacity and a resistance, by inductance and Capacitance Coupled, HVDC basic voltage superposes the pulse of repetition rate, Microsecond grade pulsewidth, according to LC series resonance principal, adopt power electronic devices, through pulse transformer transformer boost, produce high-voltage pulse at ESP two ends, collection output voltage signal is analyzed by controller, and then controls hvdc circuit.
Description
Technical field
The present invention relates to dedusting power source, particularly relate to a kind of electrostatic precipitation micropulse power.
Background technology
Along with the development of society and the progress of the mankind, people improve further to ecological environment and air quality requirements.Coal-burning power plant's dust emission standard value drops to 30mg/ cubic meter even below 20mg/ cubic meter further by 50mg/ cubic meter, and the discharge value of fine particle PM2.5 requires to reduce further.Current routine intravenous electric dust-removing power supply can not meet the need, and this electrostatic dust-removing micropulse power all has good dust removing effects to Nanoparticle and various senior middle schools low resistivity dust.
Summary of the invention
The object of the invention is the deficiency overcoming above prior art, provides a kind of electrostatic precipitation micropulse power, specifically has following technical scheme to realize:
Described electrostatic precipitation micropulse power, comprise dc source, high-frequency and high-voltage impulse power supply, coupling circuit and electrostatic precipitation circuit, described dc source, high-frequency and high-voltage impulse power supply and coupling circuit are in turn connected to form major loop, described electrostatic precipitation circuit is connected with high-frequency and high-voltage impulse power supply with dc source respectively, described electrostatic precipitation circuit is by an electric capacity and resistance and connect and form, described buffer circuit comprises resistance, diode and electric capacity, described diode and resistance and connect again with described capacitance series.
The further design of described electrostatic precipitation micropulse power is, described coupling circuit is made up of an inductance and capacitance series.
The further design of described electrostatic precipitation micropulse power is, described high-voltage pulse power source primary side is two winding parallels, secondary side is a winding, two windings of primary side connect an IGBT switch respectively by a buffer circuit, maintain within 500 volts at shutdown moment to allow the both end voltage of IGBT switch.
The further design of described electrostatic precipitation micropulse power is, the burning group of secondary side is connected with electric cleaner.
The further design of described electrostatic precipitation micropulse power is, described each IGBT switch is connected to coupling capacitance with between corresponding burning group and between electric cleaner with corresponding burning group.
The further design of described electrostatic precipitation micropulse power is, two burning groups of described primary side are connected with pulse power supply power supply respectively by an inductance coil, the burning group of described secondary side is connected with fundamental power supply by an inductance coil, to reduce the impact of high-voltage pulse to fundamental power supply and pulse power supply power supply.
The further design of described electrostatic precipitation micropulse power is, the primary voltage of high-frequency and high-voltage impulse power supply is 2.5kV, and secondary voltage is 70kV, voltage transmission than K=28, pulse width T r=100us.
Advantage of the present invention is as follows:
Electrostatic precipitation micropulse power provided by the invention is made up of dc source, high-frequency and high-voltage impulse power supply, coupling circuit and control circuit.Electrostatic precipitation is equivalent to the parallel circuit of an electric capacity and a resistance, by inductance and Capacitance Coupled, HVDC basic voltage superposes the pulse of repetition rate, Microsecond grade pulsewidth, according to LC series resonance principal, adopt power electronic devices, through pulse transformer transformer boost, produce high-voltage pulse at ESP two ends, collection output voltage signal is analyzed by controller, and then controls hvdc circuit.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of electrostatic precipitation micropulse power provided by the invention.
Fig. 2 is the circuit diagram of high-frequency and high-voltage impulse power supply.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention program is described in detail.
The electrostatic precipitation micropulse power that the present embodiment provides, see Fig. 1, forms primarily of dc source, high-frequency and high-voltage impulse power supply, coupling circuit and electrostatic precipitation circuit.Dc source, high-frequency and high-voltage impulse power supply and coupling circuit are in turn connected to form major loop.Electrostatic precipitation circuit is connected with dc source, high-frequency and high-voltage impulse power supply respectively.Coupling circuit is connected with dc source, high-frequency and high-voltage impulse power supply respectively.High-frequency and high-voltage impulse power supply in the present embodiment is a high voltage pulse transformer.The primary voltage of high voltage pulse transformer PT is 2.5kV, secondary voltage is 70kV, voltage transmission compares K=28, pulse width T r=100us, resonance current is laterally zygomorphic sine wave, and pulse transformer number of turn design frequency is 10kHz, and pulse recurrence frequency should be able to be adjusted to 400Hz from 25Hz, therefore belong to medium-frequency pulse transformer, transformer core can be Superfine crystal material and the ultra-thin silicon steel of 0.2mm.Pulse Transformer Design, except meeting general design of transformer principle, also has key factor that will consider to be exactly the requirement that the leakage inductance value of primary coil will meet resonant pulses width and resonance impedance.Primary voltage 2.5kV, secondary voltage 70kV pulse, and take insulation measures.Pulse current is very large, and pulse width is narrow, 100us, but repetition rate is not high, 25Hz ~ 400Hz, the desirable 10A/mm2 of current density.
As Fig. 1, in the present embodiment, electrostatic precipitation circuit is connect formed by an electric capacity Cp and resistance Rp.Electric capacity Cp and corresponding one end of resistance Rp connect dc source, high-frequency and high-voltage impulse power supply and ground respectively, other end butt coupling circuit.
In the present embodiment, coupling circuit is by an inductance L
dCwith electric capacity C
dCcompose in series.
High-voltage pulse power source primary side is two winding parallels, and secondary side is a winding, see Fig. 2.In order to the electric current in pulse transformer leakage inductance can be allowed to have path, be provided with buffer circuit.Two windings of primary side connect an IGBT switch respectively by a buffer circuit, maintain within 500 volts at shutdown moment to allow the both end voltage of IGBT switch.The burning group of secondary side is connected with electric cleaner ESP.Buffer circuit is made up of resistance, diode and electric capacity.Diode and resistance and connect again with capacitance series, as shown in Figure 2.Buffering clamped network Cd1, Dd1, Rd1 and Cd2, Dd2, Rd2 are the safety of IGBT switch when solving impulse duration pulsing flashover and arranging, and its parameter can be determined by experiment when impulse sparkover is tested.
Be connected to coupling capacitance between each IGBT switch with corresponding burning group and between electric cleaner with corresponding burning group, as shown in Figure 2, IGBT1 is connected with coupling capacitance Cs1, and IGBT2 is connected with coupling capacitance Cs2.
Further, two burning group N1, N2 of primary side are connected with pulse power supply power supply Vps respectively by an inductance coil, and as shown in Figure 2, N1 is connected by Lps1 and Vps, and N2 is connected by Lps2 and Vps.The burning group of secondary side is connected with fundamental power supply Vdc by an inductance coil, and namely N3 is connected by Ldc and Vdc.So, the impact of high-voltage pulse to fundamental power supply and pulse power supply power supply can be reduced.Inductance coil Ldc and Lps1, Lps2 are arranged the impact of fundamental power supply Udc and pulse power supply power supply Ups for reducing high-voltage pulse, therefore belong to filter inductance, generally get mH level.
Direct current basic voltage Udc adds to ESP by inductance L dc, is connected to IGBT switch and storage capacitor Cs for preventing adding coupling capacitance Cc. high-voltage pulse generator power supply Ups by pulse transformer PT secondary short circuited by inductance L ps.Inductance L dc and Lps is to prevent high-voltage pulse from directly affecting fundamental power supply Udc and impulse generator power supply Ups.Diode D is the fly-wheel diode being positioned at IGBT switch internal.Ups dc source charges to Ups by inductance L ps and pulse transformer PT primary coil to storage capacitor Cs.When IGBT switch conduction, Cs and pulse transformer PT leakage inductance Ls, coupling capacitance Cc, ESP electric capacity Cf forms series current resonance, the electric current of a pulse and voltage waveform, the sine wave of electric current to be the cycle be T, voltage is the cosine wave of secundly, be superimposed upon on basic DC voltage Udc, form negative high pulse voltage Udc+Vpulse and add to ESP.
When driving pulse adds to the control pole of IGBT switch, IGBT conducting, Cs is by PT leakage inductance Ls, the equivalent capacity electric discharge of Cf and Cc, produce the sine wave of positive direction, as t=T/2, resonance current is O, reverse with after-current, by the sustained diode of IGBT, feedback energy to Cs reverse charging, during t=T, complete the lower half of sine-wave current, electric current makes zero again.Pulsewidth is T, and amplitude is Udc+Vpulse; Therefore the cosine wave pulse voltage of secundly is formed.
Claims (6)
1. an electrostatic precipitation micropulse power, it is characterized in that comprising dc source, high-frequency and high-voltage impulse power supply, coupling circuit and electrostatic precipitation circuit, described dc source, high-frequency and high-voltage impulse power supply and coupling circuit are in turn connected to form major loop, described electrostatic precipitation circuit is connected with high-frequency and high-voltage impulse power supply with dc source respectively, described electrostatic precipitation circuit is by an electric capacity and resistance and connect and form, described high-voltage pulse power source primary side is two winding parallels, secondary side is a winding, two windings of primary side connect an IGBT switch respectively by a buffer circuit, maintain within 500 volts to allow the both end voltage of IGBT switch at shutdown moment, described buffer circuit comprises resistance, diode and electric capacity, described diode and resistance and connect again with described capacitance series.
2. electrostatic precipitation micropulse power according to claim 1, is characterized in that described coupling circuit is made up of an inductance and capacitance series.
3. electrostatic precipitation micropulse power according to claim 1, is characterized in that the burning group of secondary side is connected with electric cleaner.
4. electrostatic precipitation micropulse power according to claim 1, is characterized in that described each IGBT switch is connected to coupling capacitance with between corresponding burning group and between electric cleaner with corresponding burning group.
5. electrostatic precipitation micropulse power according to claim 1, it is characterized in that two burning groups of described primary side are connected with pulse power supply power supply respectively by an inductance coil, the burning group of described secondary side is connected with fundamental power supply by an inductance coil, to reduce the impact of high-voltage pulse to fundamental power supply and pulse power supply power supply.
6. electrostatic precipitation micropulse power according to claim 1, it is characterized in that the primary voltage of high-frequency and high-voltage impulse power supply is 2.5kV, secondary voltage is 70kV, voltage transmission than K=28, pulse width T r=100us.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520036196.XU CN204672440U (en) | 2015-01-20 | 2015-01-20 | A kind of electrostatic precipitation micropulse power |
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| CN201520036196.XU CN204672440U (en) | 2015-01-20 | 2015-01-20 | A kind of electrostatic precipitation micropulse power |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106899225A (en) * | 2017-03-22 | 2017-06-27 | 南京航空航天大学 | Electrostatic precipitation pulse power supply circuit and its method for designing |
| CN107735653A (en) * | 2016-03-31 | 2018-02-23 | 深圳迈瑞生物医疗电子股份有限公司 | Liquid level sensor and detection method and Full-automatic picking sampling device |
| CN109462344A (en) * | 2018-12-19 | 2019-03-12 | 武汉大学 | A kind of electric precipitator pulse power based on intermediate frequency charging |
| CN115459603A (en) * | 2022-09-22 | 2022-12-09 | 南京航空航天大学 | A Synthetic Jet Generating Circuit Based on Isolated Saturated Inductor |
-
2015
- 2015-01-20 CN CN201520036196.XU patent/CN204672440U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107735653A (en) * | 2016-03-31 | 2018-02-23 | 深圳迈瑞生物医疗电子股份有限公司 | Liquid level sensor and detection method and Full-automatic picking sampling device |
| CN106899225A (en) * | 2017-03-22 | 2017-06-27 | 南京航空航天大学 | Electrostatic precipitation pulse power supply circuit and its method for designing |
| CN106899225B (en) * | 2017-03-22 | 2019-06-18 | 南京航空航天大学 | Pulse power supply circuit for electrostatic precipitator and its design method |
| CN109462344A (en) * | 2018-12-19 | 2019-03-12 | 武汉大学 | A kind of electric precipitator pulse power based on intermediate frequency charging |
| CN115459603A (en) * | 2022-09-22 | 2022-12-09 | 南京航空航天大学 | A Synthetic Jet Generating Circuit Based on Isolated Saturated Inductor |
| CN115459603B (en) * | 2022-09-22 | 2023-04-14 | 南京航空航天大学 | A Synthetic Jet Generating Circuit Based on Isolated Saturated Inductor |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20190120 |