CN204442188U - A kind of electrostatic precipitation high-frequency device - Google Patents
A kind of electrostatic precipitation high-frequency device Download PDFInfo
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- CN204442188U CN204442188U CN201420470637.2U CN201420470637U CN204442188U CN 204442188 U CN204442188 U CN 204442188U CN 201420470637 U CN201420470637 U CN 201420470637U CN 204442188 U CN204442188 U CN 204442188U
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- module
- rectification
- input
- voltage
- electrostatic precipitation
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Abstract
The utility model belongs to electric cleaner and manufactures field, relates to a kind of electrostatic precipitation high-frequency device, relates generally to a kind of direct voltage adjustable, grid side without harmonic wave electrostatic precipitation high-frequency device.The utility model mainly comprises the filtration module, input rectifying module, inversion module, high frequency transformer and the output rectification module that are connected successively, and the output exporting rectification module is connected with electrostatic precipitator body.Filtration module comprises three filter inductances and three resistance, input rectifying module is the three-phase voltage type PWM rectification circuit that 6 IGBT are formed, adopt the control strategy of Frequency conversion control commutation technique (SVPWM rectification), three-phase alternating current electrical input is connected with the input of three-phase bridge rectification circuit through filtration module.Inversion module be IGBT inverter four power tubes on each inverse parallel diode.That input rectifying part of the present utility model adopts is 6 IGBT, the control strategy adopted is Frequency conversion control commutation technique (SVPWM rectification), busbar voltage after rectification can flexible, can value between flexible voltage from the maximum of uncontrollable rectifier, its value can control, in input voltage one timing, still DC bus-bar voltage can be regulated.Such benefit is, decreases the current harmonics of grid side, decreases the rear class Transformer Winding number of turn, makes the utilance of electric energy high.The utility model volume of transformer is little, and power factor is high, few to the harmonic pollution of electrical network, good dedusting effect, and the efficiency of electrostatic precipitation is high.
Description
Technical field
The utility model belongs to electric cleaner and manufactures field, relates to a kind of electrostatic precipitation high-frequency device, relates generally to a kind of direct voltage adjustable, grid side without harmonic wave electrostatic precipitation high-frequency device.
Background technology
Notification number: CN201880600U, disclosed in it, a kind of technical characteristic of electric precipitation high frequency electric source is: comprise the filtration module, input rectifying module, inversion module, LC resonant circuit, the high frequency transformer output rectification module that are connected successively, have high voltage silicon stack, electric capacity and load.The input rectifying module of this invention is that employing 6 diodes carry out rectification, but the DC bus-bar voltage after rectification is constant nonadjustable, and when input voltage is constant, it is uncontrollable that rectification exports.
Summary of the invention
(1) technical problem that will solve
For solving the problem, the utility model proposes a kind of electrostatic precipitator, diode is changed input rectifying part into IGBT, the control strategy adopted is Frequency conversion control commutation technique (SVPWM rectification), busbar voltage after rectification can flexible, can value between flexible voltage from the maximum of uncontrollable rectifier, and its value can control, in input voltage one timing, still DC bus-bar voltage can be regulated.Such benefit is, decreases the current harmonics of grid side, decreases the rear class Transformer Winding number of turn, makes the utilance of electric energy high.
(2) technical scheme
A kind of electrostatic precipitation high-frequency device, is characterized in that: mainly comprise the filtration module, input rectifying module, inversion module, high frequency transformer and the output rectification module that are connected successively, the output exporting rectification module is connected with electric cleaner; Filtration module comprises three filter inductances and three resistance, input rectifying module is the three-phase voltage type PWM rectification circuit that 6 IGBT are formed, adopt the control strategy of Frequency conversion control commutation technique i.e. SVPWM rectification, three-phase alternating current electrical input is connected with the input of three-phase bridge rectification circuit through filter inductance, inversion module be IGBT inverter four power tubes on each diode in parallel.
Further, described three-phase voltage type PWM rectifier main circuit as shown in Figure 1, in figure
,
,
, be three-phase symmetrical power voltage;
,
,
for triple line electric current;
,
,
for the switching signal of rectifier switch pipe,
(
)=1 is the conducting of brachium pontis switching tube, and lower brachium pontis switching tube turns off,
=0 is the conducting of lower brachium pontis switching tube, and upper brachium pontis switching tube turns off;
for direct voltage;
,
for resistance and the inductance of filter reactor;
for DC bus capacitor;
,
for the input voltage of rectifier;
for load current.
[0007]further, electric capacity is directly connected between two outputs of input rectifying module
.
(3) beneficial effect
The utility model has changed input rectifying part into IGBT diode, adopt the control strategy of Frequency conversion control commutation technique (SVPWM rectification), busbar voltage after rectification be can flexible can value between flexible voltage from the maximum of uncontrollable rectifier, its value can control, in input voltage one timing, still DC bus-bar voltage can be regulated.Such benefit is, decreases the current harmonics of grid side, decreases the rear class Transformer Winding number of turn, makes the utilance of electric energy high.And volume of transformer is little, power factor is high, few to the harmonic pollution of electrical network, good dedusting effect, and the efficiency of electrostatic precipitation is high.
Accompanying drawing explanation
Fig. 1 is three-phase voltage type PWM rectifier main circuit of the present utility model.
Fig. 2 is schematic diagram of the present utility model.
Mark in accompanying drawing and parts mark: 1-three-phase alternating current electrical input, 2-filtration module, 3-input rectifying module, 4-inversion module, 5-high frequency transformer, 6-export rectification module, 7-electric cleaner.
Embodiment
As shown in Figure 2, the utility model relates to a kind of electrostatic precipitator, mainly comprise the filtration module 2, input rectifying module 3, inversion module 4, high frequency transformer 5 and the output rectification module 6 that are connected successively, the output exporting rectification module 6 is connected with electric cleaner 7.Filtration module 2 comprises three filter inductances and three resistance, input rectifying module 3 is the three-phase voltage type PWM rectification circuit that 6 IGBT are formed, adopt the control strategy of Frequency conversion control commutation technique (SVPWM rectification), three-phase alternating current electrical input 1 is connected with the input of three-phase bridge rectification circuit through filter inductance.Inversion module be IGBT inverter four power tubes on each diode in parallel.
That described input rectifying part adopts is 6 IGBT, the control strategy adopted is Frequency conversion control commutation technique (SVPWM rectification), make the busbar voltage after rectification can flexible, can value between flexible voltage from the maximum of uncontrollable rectifier, its value can control, in input voltage one timing, still DC bus-bar voltage can be regulated.
Electric capacity is directly connected between two outputs of described input rectifying module 3
.
Described rectifying part adopts the controlled rectification of IGBT, adopts PWM control strategy can control DC bus-bar voltage size flexibly.
Described three-phase voltage type PWM rectifier main circuit as shown in Figure 1, in figure
,
,
, be three-phase symmetrical power voltage;
,
,
for triple line electric current;
,
,
for the switching signal of rectifier switch pipe,
(
)=1 (upper brachium pontis switching tube conducting, lower brachium pontis switching tube turns off),
=0 (lower brachium pontis switching tube conducting, upper brachium pontis switching tube turns off);
for direct voltage;
,
for resistance and the inductance of filter reactor;
for DC bus capacitor;
,
for the input voltage of rectifier;
for load current.
Claims (2)
1. an electrostatic precipitation high-frequency device, is characterized in that: mainly comprise the filtration module, input rectifying module, inversion module, high frequency transformer and the output rectification module that are connected successively, the output exporting rectification module is connected with electric cleaner; Filtration module comprises three filter inductances and three resistance, input rectifying module is the three-phase voltage type PWM rectification circuit that 6 IGBT are formed, adopt the control strategy of Frequency conversion control commutation technique i.e. SVPWM rectification, three-phase alternating current electrical input is connected with the input of three-phase bridge rectification circuit through filter inductance, inversion module be IGBT inverter four power tubes on each diode in parallel.
2. a kind of electrostatic precipitation high-frequency device according to claim 1, is characterized in that: be directly connected in electric capacity between two outputs of input rectifying module
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420470637.2U CN204442188U (en) | 2014-08-20 | 2014-08-20 | A kind of electrostatic precipitation high-frequency device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420470637.2U CN204442188U (en) | 2014-08-20 | 2014-08-20 | A kind of electrostatic precipitation high-frequency device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204442188U true CN204442188U (en) | 2015-07-01 |
Family
ID=53610001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420470637.2U Expired - Fee Related CN204442188U (en) | 2014-08-20 | 2014-08-20 | A kind of electrostatic precipitation high-frequency device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204442188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733245A (en) * | 2017-10-25 | 2018-02-23 | 湖北新空电气有限公司 | A kind of efficiently amplitude modulation perseverance high-frequency electric dust removal power circuit |
| CN109962633A (en) * | 2017-12-25 | 2019-07-02 | 湖北新空电气有限公司 | A kind of high-power dedusting power source of permanent high-frequency and high-voltage of environmental protection |
-
2014
- 2014-08-20 CN CN201420470637.2U patent/CN204442188U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733245A (en) * | 2017-10-25 | 2018-02-23 | 湖北新空电气有限公司 | A kind of efficiently amplitude modulation perseverance high-frequency electric dust removal power circuit |
| CN107733245B (en) * | 2017-10-25 | 2019-12-03 | 湖北新空电气有限公司 | A kind of efficient amplitude modulation perseverance high-frequency electric dust removal power circuit |
| CN109962633A (en) * | 2017-12-25 | 2019-07-02 | 湖北新空电气有限公司 | A kind of high-power dedusting power source of permanent high-frequency and high-voltage of environmental protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20160820 |