CN219740210U - Variable-frequency constant-current power supply for electric dust remover - Google Patents
Variable-frequency constant-current power supply for electric dust remover Download PDFInfo
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- CN219740210U CN219740210U CN202321247727.0U CN202321247727U CN219740210U CN 219740210 U CN219740210 U CN 219740210U CN 202321247727 U CN202321247727 U CN 202321247727U CN 219740210 U CN219740210 U CN 219740210U
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- current power
- frequency constant
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- 239000000428 dust Substances 0.000 title claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 14
- 239000012716 precipitator Substances 0.000 claims description 7
- 230000003213 activating effect Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a variable-frequency constant-current power supply for an electric dust collector, which aims at the problem that the output voltage of a high-frequency power supply in the prior art can be further improved, and belongs to the technical field of electric dust collectors. The utility model can obtain high-voltage direct current higher than that of a common circuit through the primary booster circuit and the secondary booster circuit, thereby improving the dust removing effect of the dust remover.
Description
Technical Field
The utility model belongs to the technical field of electric dust collectors, and particularly relates to a variable-frequency constant-current power supply for an electric dust collector.
Background
The high-frequency electric dust removal adopts a three-phase 380V alternating current power supply, the direct current is changed into the direct current through rectification, the direct current is changed into the high-frequency alternating current through rectification, the high-frequency alternating current is changed into boosting voltage through rectification, the electric field dust removal is carried out through a high-voltage isolation knife switch, the high-frequency electric dust removal adopts high-frequency power supply, power supply waveforms generate more voltage peaks in relative time, corona discharge is generated between dust removal polar plates more easily due to the peaks, and corona discharge can be generated between the dust removal polar plates more easily based on the high-voltage discharge, so that a good dust removal effect is achieved. The improvement of the output voltage of the high-frequency power supply is a research hot spot in the technical field, the switching frequency of the inverter adopting the IGBT module is used to the limit, and the voltage of the power supply which wants to further step can only be researched from the circuit structure of the power supply under the condition of keeping the transformer inconvenient.
Disclosure of Invention
Aiming at the problem that the output voltage of a high-frequency power supply in the prior art can be further improved, the utility model provides a variable-frequency constant-current power supply for an electric dust remover.
The utility model aims at realizing the following technical scheme: the utility model provides a frequency conversion constant current power supply for electrostatic precipitator, includes three-phase rectifier circuit, first boost circuit, inverter circuit, second boost circuit and the diode rectifier module that connects gradually, three-phase rectifier circuit includes phase adjustment device, the phase control device is coupled between three-phase rectifier circuit and the diode rectifier module.
In the scheme, the three-phase alternating current is changed into single-phase direct current after passing through the three-phase rectifying circuit, the voltage of the single-phase direct current is increased through the first boosting circuit, the medium-frequency alternating current is obtained through the inverter circuit, then the high-voltage alternating current is obtained through the second boosting circuit, and then the high-voltage direct current is obtained through the diode rectifying module. And finally, monitoring the current of the output high-voltage direct current through a phase control device, and when the current exceeds a preset current value, activating a phase adjustment device to reduce the voltage value of the three-phase rectification circuit, so that the current of the output high-voltage direct current is reduced in an equal proportion, and the current of the output high-voltage direct current is kept constant.
Preferably, the first boost circuit is a boost circuit.
Preferably, the boost circuit comprises an inductor L1 and an IGBT module, one end of the IGBT module is connected with one end of the inductor L1, the other end of the IGBT module is grounded, and the two sides of the IGBT module are also connected with a capacitor C1 in parallel.
Preferably, a protection diode D1 is further provided between one end of the inductor L1 and the IGBT module, and one end of the capacitor C1.
Preferably, the second boost circuit includes a capacitor C2 and a high frequency transformer TM, and the capacitor C2 is connected in series to the primary winding of the high frequency transformer TM.
Preferably, the output of the diode rectifier module is connected to a high voltage device.
Preferably, the inverter circuit is formed by full-bridge connection of four IGBT modules.
Preferably, the three-phase rectifying circuit comprises three groups of silicon controlled circuits, each group of silicon controlled circuits comprises two silicon controlled diodes, corresponding phases are arranged in each silicon controlled diode, and the magnitude of the phases is adjusted through the phase adjusting device, so that the voltage magnitude of the input power frequency alternating current after passing through the silicon controlled circuits is adjusted.
Preferably, the phase control device comprises a control chip, and the control chip is used for activating the phase adjustment device when the current value output by the diode rectification module exceeds a preset current value.
Compared with the prior art, the utility model has the following beneficial effects: the three-phase alternating current is changed into single-phase direct current after passing through the three-phase rectifying circuit, the voltage of the single-phase direct current is increased through the first boosting circuit, the medium-frequency alternating current is obtained through the inversion circuit, then the high-voltage alternating current is obtained through the second boosting circuit, and then the high-voltage direct current is obtained through the diode rectifying module. And finally, monitoring the current of the output high-voltage direct current through a phase control device, and when the current exceeds a preset current value, activating a phase adjustment device to reduce the voltage value of the three-phase rectification circuit, so that the current of the output high-voltage direct current is reduced in an equal proportion, and the current of the output high-voltage direct current is kept constant.
Drawings
Fig. 1 is a schematic circuit structure of the present utility model.
The marks in the figure: 1. a three-phase rectifying circuit; 2. a first booster circuit; 3. an inverter circuit; 4. a second booster circuit; 5. a diode rectifying module; 6. a phase control device.
Detailed Description
The utility model is further described below with reference to embodiments shown in the drawings in which:
as shown in fig. 1, a variable frequency constant current power supply for an electric precipitator comprises a three-phase rectifying circuit 1, a first boosting circuit 2, an inverter circuit 3, a second boosting circuit 4 and a diode rectifying module 5 which are sequentially connected, wherein the output end of the diode rectifying module 5 is connected with high-voltage equipment. The three-phase rectifying circuit 1 comprises a phase adjusting device, and a phase control device 6 is coupled between the three-phase rectifying circuit 1 and the diode rectifying module 5. The phase control means 6 comprise a control chip for activating the phase adjustment means when the current value output by the diode rectification module 5 exceeds a preset current value.
The first boost circuit 2 is a boost circuit, and comprises an inductor L1 and an IGBT module, wherein one end of the IGBT module is connected with one end of the inductor L1, the other end of the IGBT module is grounded, and the two sides of the IGBT module are connected with a capacitor C1 in parallel. A protection diode D1 is further provided between the end of the inductor L1 and the IGBT module and the end of the capacitor C1. The diode prevents the capacitor C1 from discharging to ground. The voltage at the two ends of the capacitor C1 is higher than the voltage at the output end of the three-phase rectifying circuit 1 through continuous on-off of the IGBT module.
The second boost circuit 4 includes a capacitor C2 and a high frequency transformer TM, and the capacitor C2 is connected in series to the primary winding of the high frequency transformer TM.
The inverter circuit 3 is formed by connecting four IGBT modules in a full bridge manner.
The three-phase rectifying circuit 1 comprises three groups of silicon controlled circuits, each group of silicon controlled circuits comprises two silicon controlled diodes, corresponding phases are arranged in each silicon controlled diode, and the magnitude of the phases is adjusted through a phase adjusting device, so that the voltage magnitude of the input power frequency alternating current after passing through the silicon controlled circuits is adjusted.
The phase adjusting device and the control chip mentioned in the document of the utility model are patent number CN218526245U, and the patent name is the phase adjusting device and the control chip mentioned in the utility model of an intelligent variable-frequency constant-current power supply and system.
The three-phase alternating current is changed into single-phase direct current after passing through the three-phase rectifying circuit 1, the voltage of the single-phase direct current is increased through the first boosting circuit 2, the medium-frequency alternating current is obtained through the inverter circuit 3, the high-voltage alternating current is obtained through the second boosting circuit 4, and the high-voltage direct current is obtained through the diode rectifying module 5. Finally, the current of the output high-voltage direct current is monitored through the phase control device 6, when the current exceeds a preset current value, the phase adjustment device is activated, the voltage value of the three-phase rectification circuit 1 is reduced, and therefore the current of the output high-voltage direct current is reduced in an equal proportion, and the current of the output high-voltage direct current is kept constant.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (9)
1. The variable-frequency constant-current power supply for the electric dust collector is characterized by comprising a three-phase rectifying circuit (1), a first boosting circuit (2), an inverter circuit (3), a second boosting circuit (4) and a diode rectifying module (5) which are sequentially connected, wherein the three-phase rectifying circuit (1) comprises a phase adjusting device, and a phase control device (6) is coupled between the three-phase rectifying circuit (1) and the diode rectifying module (5).
2. A variable frequency constant current power supply for an electric precipitator according to claim 1, in which the first boost circuit (2) is a boost circuit.
3. The variable-frequency constant-current power supply for the electric dust collector according to claim 2, wherein the boost circuit comprises an inductor L1 and an IGBT module, one end of the IGBT module is connected with one end of the inductor L1, the other end of the IGBT module is grounded, and two sides of the IGBT module are connected with a capacitor C1 in parallel.
4. A variable frequency constant current power supply for an electric precipitator according to claim 3, further comprising a protection diode D1 between the inductor L1 and the end of the IGBT module connected and the end of the capacitor C1.
5. A variable frequency constant current power supply for an electric precipitator according to claim 1, in which the second boost circuit (4) comprises a capacitor C2 and a high frequency transformer TM, the capacitor C2 being connected in series over the primary winding of the high frequency transformer TM.
6. A variable frequency constant current power supply for an electric precipitator according to claim 1, characterised in that the output of the diode rectifying module (5) is connected to high voltage equipment.
7. The variable frequency constant current power supply for the electric dust collector according to claim 1, wherein the inverter circuit (3) is formed by full-bridge connection of four IGBT modules.
8. A variable frequency constant current power supply for an electric precipitator according to claim 1, wherein said three-phase rectifying circuit (1) comprises three sets of thyristor circuits, each set comprising two thyristors.
9. A variable frequency constant current power supply for an electric precipitator according to claim 1, wherein the phase control device (6) comprises a control chip for activating the phase adjustment device when the current value output by the diode rectification module (5) exceeds a preset current value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321247727.0U CN219740210U (en) | 2023-05-19 | 2023-05-19 | Variable-frequency constant-current power supply for electric dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321247727.0U CN219740210U (en) | 2023-05-19 | 2023-05-19 | Variable-frequency constant-current power supply for electric dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219740210U true CN219740210U (en) | 2023-09-22 |
Family
ID=88057195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321247727.0U Active CN219740210U (en) | 2023-05-19 | 2023-05-19 | Variable-frequency constant-current power supply for electric dust remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219740210U (en) |
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2023
- 2023-05-19 CN CN202321247727.0U patent/CN219740210U/en active Active
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