CN113054857A - High-energy pulse power supply system with stable amplitude for electric dust collector - Google Patents
High-energy pulse power supply system with stable amplitude for electric dust collector Download PDFInfo
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- CN113054857A CN113054857A CN202110270982.6A CN202110270982A CN113054857A CN 113054857 A CN113054857 A CN 113054857A CN 202110270982 A CN202110270982 A CN 202110270982A CN 113054857 A CN113054857 A CN 113054857A
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- voltage
- pulse
- power supply
- electric dust
- dust collector
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a high-energy pulse power supply system with stable amplitude for an electric dust remover, wherein a pulse generation part power supply U1 is connected with a time sequence charging switch G11 through an energy limiting reactor L11, a resistor R11 and a capacitor C11 are connected in parallel with the time sequence charging switch G11, one path of output of the time sequence charging switch G11 is grounded through a pulse control switch G12, the other path of output of the time sequence charging switch G11 is grounded through an energy storage capacitor C12, a stable resonance reactor L12 and a primary coil of a low leakage inductance pulse transformer B and then grounded, a pulse control switch G12 is connected in parallel with a diode D11, a resistor R12, a diode D12 and a capacitor C13 are also connected in parallel with a pulse control switch G12, one end of a secondary coil of the low leakage inductance pulse transformer B is connected with a terminal A of the electric dust remover through a; the output end of the direct-current high-voltage fundamental wave power supply U2 is connected with the terminal A of the electric dust collector through a voltage clamping diode D14 and an alternating-current suppression reactor L13 in sequence.
Description
Technical Field
The invention relates to a power supply for an electric dust collector, in particular to a high-energy pulse power supply system with stable amplitude for the electric dust collector.
Background
The electric dust collector is a dust removing device which makes dust particles charged and deposited on electrodes under the action of high-voltage electric field force so as to separate the dust particles from dust-containing gas. The traditional power supply of the electric dust collector is a high-voltage direct-current power supply, the provided high-voltage direct current is pulsating and has ripples, and the phenomena of low breakdown voltage, poor charging effect of fine dust and high-specific-resistance dust, back corona and the like exist, so that the dust removal effect is influenced. The power supply of the existing electric dust collector comprises a pulse generation part power supply and a direct-current high-voltage fundamental wave power supply, the pulse generation part power supply is an amplitude-modulation direct-current power supply, working voltage is provided for a pulse generation circuit, the pulse voltage generated by the pulse generation circuit and the high-voltage direct-current voltage generated by the direct-current high-voltage fundamental wave power supply are superposed to supply power to the electric dust collector, high-concentration charged particles are expected to be generated between the plate lines of the electric dust collector within a short time when the high-voltage pulse is added to the electric dust collector, fine dust is forced, a large amount of high-specific-resistance dust is charged, when the internal voltage of the electric dust collector is reduced to the fundamental wave voltage, the dust of the large amount of charged dust is subjected to stronger electric field force action, the dust is rapidly moved to. However, the high-voltage direct-current voltage output by the existing direct-current high-voltage fundamental wave power supply still has ripples, so that pulse voltage superposition is unstable, the electric dust collector discharges frequently, the power supply is powered off frequently, the superposed pulse voltage function cannot be exerted, and the dust collection effect is worse; meanwhile, the pulse voltage peak value generated by the pulse generating circuit shakes, which is also easy to cause the phenomena of breakdown inside the electric dust collector and the like.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provides a high-energy pulse power supply system with stable amplitude for an electric dust remover.
The technical solution of the invention is as follows: a high-energy pulse power supply system with stable amplitude for an electric dust remover is provided with a pulse generation part power supply U1 and a direct-current high-voltage fundamental wave power supply U2, wherein the output end of the pulse generation part power supply U1 is connected with a time sequence charging switch G11 through an energy limiting reactor L11, the time sequence charging switch G11 is connected in parallel with an absorption loop formed by connecting a resistor R11 and a capacitor C11 in series, one path of the output end of the time sequence charging switch G11 is grounded through a pulse control switch G12, the other path of the output end of the time sequence charging switch passes through an energy storage capacitor C12, a stable resonance reactor L12 and a primary coil of a low leakage inductance pulse transformer B and then is grounded, the pulse control switch G12 is connected in parallel with a reverse diode D11, an absorption protection circuit formed by connecting a resistor R12, a diode D12 and a capacitor C13 in parallel with the pulse control switch G12, one end of a secondary coil of the low leakage inductance pulse transformer B is, The other end is grounded; the output end of the direct-current high-voltage fundamental wave power supply U2 is connected with a terminal A of the electric dust collector through a voltage clamping diode D14 and an alternating-current suppression reactor L13 in sequence; within the soft start time T1, the direct-current high-voltage fundamental wave power supply U2 outputs a high-voltage direct-current voltage Ud, and the electric dust collector is charged to a stable high-voltage direct-current voltage Ud through a voltage clamping diode D14, an alternating-current suppression reactor L13 and a terminal A of the electric dust collector; after the soft start time T1, the pulse generation part power supply U1 adjusts output direct current voltage + Up, so that the time sequence charging switch G11 is conducted to charge the energy storage capacitor C14 within the time T2, the T2 is 80% of the corresponding period of 1/PPS, when the energy storage capacitor C14 is full, the time sequence charging switch G11 is closed, after 100 mus is delayed, the pulse control switch G12 is conducted and the duration T3=80 mus, the electric energy of the energy storage capacitor C14 is released to the primary winding of the low leakage inductance pulse transformer B in a resonance mode through a stable resonance reactor L12, the secondary winding of the low leakage inductance pulse transformer B charges the electric energy to the capacitive load of the electric dust collector through a coupling capacitor C14 and an electric dust collector terminal A, then the pulse control switch G12 is closed, the time sequence charging switch G11 is conducted, the time sequence charging switch G11 and the pulse control switch G12 are both triggered in a cycle of 1/PPS and are logically interlocked, and providing pulse voltage Upk for the electric dust collector and superposing the pulse voltage Upk on the high-voltage direct current voltage Ud.
The direct-current high-voltage fundamental wave power supply U2 is provided with a breaker K1, a disconnector K1 is connected with a three-phase controllable rectifier bridge consisting of silicon controlled rectifiers D1, D2, D3, D4, D5 and D6 through a three-phase reactor L1, the output of the three-phase controllable rectifier bridge is connected with an H-bridge IGBT inverter circuit through a second-order direct-current voltage filter circuit consisting of an inductor L2, a capacitor C1, an inductor L3 and a capacitor C2, the H-bridge IGBT inverter booster circuit consists of high-speed IGBT modules Ga, Gb, Gc and Gd, and the H-bridge IGBT inverter booster circuit outputs high-voltage direct-current voltage-Ud through a high-power high-frequency transformer T1 and a high-voltage side filter rectifier unit A1 in sequence.
The time sequence charging switch and the pulse control switch are triggered in a 1/PPS (pulse per second) periodic cycle and are logically interlocked, so that a charging loop of an energy storage capacitor is completely disconnected when the pulse control switch is switched on, and full and stable resonance is formed by arranging a low leakage inductance transformer and an external series stable resonance inductor, so that stable peak pulse is generated, and the phenomena of internal breakdown of an electric dust collector and the like caused by pulse voltage peak value shaking are avoided; in addition, the direct-current high-voltage fundamental wave power supply is stable in output and free of ripples, stable high-voltage direct-current voltage is provided for the electric dust collector, the problems of electric field breakdown, frequent power supply turn-off and the like after pulse voltage superposition are avoided, the superposed pulse voltage can fully play a role, fine dust and high-specific-resistance dust in the electric dust collector are fully charged, back corona is inhibited, and the dust collection efficiency is improved.
Drawings
FIG. 1 is a schematic block diagram of a circuit of an embodiment of the invention.
Fig. 2 is a circuit diagram of a dc high-voltage fundamental power supply U2 in an embodiment of the invention.
FIG. 3 is a turn-on timing diagram of the timing charging switch and the pulse control switch according to an embodiment of the present invention.
Fig. 4 is a graph comparing the high-energy pulse superposition output generated by the embodiment of the invention with the prior pulse superposition output.
Detailed Description
The invention relates to a high-energy pulse power supply system with stable amplitude for an electric dust remover, which is shown in figures 1 and 3, and is provided with a pulse generation part power supply U1 and a direct-current high-voltage fundamental wave power supply U2, wherein the pulse generation part power supply U1 is a direct-current power supply with adjustable amplitude, the output of the pulse generation part power supply U1 is 0-2500V voltage, the output end of the pulse generation part power supply U is connected with a time sequence charging switch G11 through an energy limiting reactor L11, the time sequence charging switch G11 is connected in parallel with an absorption loop formed by connecting a resistor R11 and a capacitor C11 in series, one path of the output end of the time sequence charging switch G11 is grounded through a pulse control switch G12, and the other path is grounded through an energy storage capacitor C12, a stable resonance reactor L12 and a primary coil of a low leakage inductance pulse transformer B, the pulse control switch G12 is grounded after passing through a primary coil of the low leakage inductance pulse transformer B, the pulse control switch G3638, one end of a secondary coil of the low leakage inductance pulse transformer B is connected with a wiring terminal A of the electric dust collector through a capacitor C14, and the other end of the secondary coil is grounded; the output end of the direct-current high-voltage fundamental wave power supply U2 is connected with a terminal A of the electric dust collector through a voltage clamping diode D14 and an alternating-current suppression reactor L13 in sequence; within the soft start time T1, the direct-current high-voltage fundamental wave power supply U2 outputs a high-voltage direct-current voltage Ud, and the electric dust collector is charged to a stable high-voltage direct-current voltage Ud through a voltage clamping diode D14, an alternating-current suppression reactor L13 and a terminal A of the electric dust collector; after the soft start time T1, the pulse generation part power supply U1 adjusts the output dc voltage + Up, so that the timing charging switch G11 is turned on within the time T2 to charge the energy storage capacitor C14, the T2 is 80% of the width of the corresponding period of 1/PPS, when the energy storage capacitor C14 is full, the timing charging switch G11 is turned off, after 100 μ s of delay, the pulse control switch G12 is turned on and the duration T3=80 μ s, the electric energy of the energy storage capacitor C14 is released to the primary winding of the low leakage inductance pulse transformer B in a resonant manner through the stabilizing resonant reactor L12, the secondary winding of the low leakage inductance pulse transformer B charges the electric energy to the capacitive load of the electrostatic precipitator through the coupling capacitor C14 and the electrostatic precipitator terminal a, then the pulse control switch G12 is turned off, the timing charging switch G11 is turned on, the timing charging switch G11 and the pulse control switch G12 are both turned on at 1/PPS (the pulse repetition frequency is 100 times, i.e. once in 10 ms) and logically interlocked, providing a pulse voltage Upk to the electrostatic precipitator and superimposing it on the high voltage dc voltage Ud. When the discharge channel is not generated in the electric dust collector, the pulse is finished, and as a result, a stable high-energy ion beam is generated in the electric dust collector, so that the charging of fine dust and high-specific-resistance dust is facilitated, and the effect of high-efficiency dust collection is achieved under the fundamental voltage.
The direct-current high-voltage fundamental wave power supply U2 is shown in FIG. 2: the circuit breaker K1 is arranged and used for being connected with a three-phase power supply A, B, C (-380V, 50 Hz), the disconnector K1 is connected with a three-phase controllable rectifier bridge consisting of controllable silicon D1, D2, D3, D4, D5 and D6 through a three-phase reactor L1, the output of the three-phase controllable rectifier bridge is connected with an H-bridge IGBT inversion boosting circuit through a second-order direct-current voltage filter circuit consisting of an inductor L2, a capacitor C1, an inductor L3 and a capacitor C2, the H-bridge IGBT inversion boosting circuit consists of high-speed IGBT modules Ga, Gb, Gc and Gd, and the H-bridge IGBT inversion boosting circuit outputs high-voltage direct-current voltage-Ud through a high-power high-frequency transformer T1 and a high-voltage side filter rectifier unit A1 in sequence. The H-bridge IGBT inverter adopts a fixed frequency 20kHz mode without frequency adjustment, ensures the highest output ripple of high frequency to be minimum, and provides a high-voltage direct-current fundamental voltage with stable amplitude for an electric dust collector.
The high energy pulse overlap output produced by the embodiment of the present invention is compared to the pulse overlap output produced by the prior art as shown in fig. 4. The upper graph shows the pulse superposition output generated in the prior art, wherein Upk1 is the non-breakdown pulse voltage repetitive amplitude which can be borne in the electric dust collector, and Upk2 is the pulse voltage of the shaking fundamental wave amplitude voltage superposition shaking amplitude generated in the prior art. Because the superposed peak value exceeds the bearable breakdown peak voltage in the electric dust collector, the result causes unexpected electric field breakdown, the power supply needs to be turned off to extinguish arc, the medium in the electric dust collector is waited to recover the insulation state and slowly boost the voltage again, the electric field force in the electric dust collector is lost, and the dust collection effect cannot be ensured. The lower diagram is a schematic diagram of high-energy pulse superposition output generated by the embodiment of the invention, wherein Ud is a stable-amplitude fundamental voltage-high-voltage direct-current voltage generated by the embodiment of the invention, Upk1 is a non-breakdown pulse voltage repetition amplitude which can be borne in an electric dust collector, Upk is a pulse voltage with a stable amplitude generated by the embodiment of the invention, and under the condition that the limit breakdown voltage which can be borne in the electric dust collector is not changed, power is stably supplied for a long time, and the dust removal effect is superior to that of the prior art.
Claims (2)
1. The utility model provides a steady high energy pulse power supply system of amplitude for electrostatic precipitator has pulse to take place partial power supply U1 and direct current high voltage fundamental wave power supply U2, its characterized in that: the output end of the pulse generation part power supply U1 is connected with a time sequence charging switch G11 through an energy limiting reactor L11, the time sequence charging switch G11 is connected with an absorption loop formed by connecting a resistor R11 and a capacitor C11 in series, one path of the output end of the time sequence charging switch G11 is grounded through a pulse control switch G12, the other path of the output end of the time sequence charging switch is grounded after passing through an energy storage capacitor C12, a stable resonance reactor L12 and a primary coil of a low leakage inductance pulse transformer B in sequence, the pulse control switch G12 is connected with a reverse diode D11 in parallel, an absorption protection circuit formed by a resistor R12, a diode D12 and a capacitor C13 is connected with the pulse control switch G12 in parallel, one end of a secondary coil of the low leakage inductance pulse transformer B is connected with a terminal A of the electric dust collector through a capacitor C14; the output end of the direct-current high-voltage fundamental wave power supply U2 is connected with a terminal A of the electric dust collector through a voltage clamping diode D14 and an alternating-current suppression reactor L13 in sequence; within the soft start time T1, the direct-current high-voltage fundamental wave power supply U2 outputs a high-voltage direct-current voltage Ud, and the electric dust collector is charged to a stable high-voltage direct-current voltage Ud through a voltage clamping diode D14, an alternating-current suppression reactor L13 and a terminal A of the electric dust collector; after the soft start time T1, the pulse generation part power supply U1 adjusts output direct current voltage + Up, so that the time sequence charging switch G11 is conducted to charge the energy storage capacitor C14 within the time T2, the T2 is 80% of the corresponding period of 1/PPS, when the energy storage capacitor C14 is full, the time sequence charging switch G11 is closed, after 100 mus is delayed, the pulse control switch G12 is conducted and the duration T3=80 mus, the electric energy of the energy storage capacitor C14 is released to the primary winding of the low leakage inductance pulse transformer B in a resonance mode through a stable resonance reactor L12, the secondary winding of the low leakage inductance pulse transformer B charges the electric energy to the capacitive load of the electric dust collector through a coupling capacitor C14 and an electric dust collector terminal A, then the pulse control switch G12 is closed, the time sequence charging switch G11 is conducted, the time sequence charging switch G11 and the pulse control switch G12 are both triggered in a cycle of 1/PPS and are logically interlocked, and providing pulse voltage Upk for the electric dust collector and superposing the pulse voltage Upk on the high-voltage direct current voltage Ud.
2. The stable-amplitude high-energy pulse power supply system for the electric dust collector as claimed in claim 1, wherein the direct-current high-voltage fundamental wave power supply U2 is provided with a breaker K1, the breaker K1 is connected with a three-phase controllable rectifier bridge composed of silicon controlled rectifiers D1, D2, D3, D4, D5 and D6 through a three-phase reactor L1, the output of the three-phase controllable rectifier bridge is connected with an H-bridge IGBT inverter boosting circuit through a second-order direct-current voltage filter circuit composed of an inductor L2, a capacitor C1, an inductor L3 and a capacitor C2, the H-bridge IGBT inverter boosting circuit is composed of high-speed IGBT modules Ga, Gb, Gc and Gd, and the H-bridge IGBT inverter boosting circuit outputs high-voltage direct-current voltage-Ud sequentially through a high-power high-frequency transformer T1 and a high-voltage side filter rectification unit A1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110270982.6A CN113054857A (en) | 2021-03-12 | 2021-03-12 | High-energy pulse power supply system with stable amplitude for electric dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110270982.6A CN113054857A (en) | 2021-03-12 | 2021-03-12 | High-energy pulse power supply system with stable amplitude for electric dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113054857A true CN113054857A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110270982.6A Pending CN113054857A (en) | 2021-03-12 | 2021-03-12 | High-energy pulse power supply system with stable amplitude for electric dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113054857A (en) |
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2021
- 2021-03-12 CN CN202110270982.6A patent/CN113054857A/en active Pending
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