CN206517062U - A kind of active filter protected with humidity - Google Patents
A kind of active filter protected with humidity Download PDFInfo
- Publication number
- CN206517062U CN206517062U CN201720214923.6U CN201720214923U CN206517062U CN 206517062 U CN206517062 U CN 206517062U CN 201720214923 U CN201720214923 U CN 201720214923U CN 206517062 U CN206517062 U CN 206517062U
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- Prior art keywords
- circuit
- humidity
- delay
- active filter
- relay coil
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Drying Of Gases (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a kind of active filter protected with humidity; including detection circuit, first except wet circuit and second is except wet circuit; the detection circuit is used to detect the humidity around active filter; according to the humidity parameter of detection to first except wet circuit is controlled; first except wet circuit is in response to detection circuit, and described first, which removes wet circuit, includes the first control unit, the first delay circuit and the first warning reminding circuit；Described second removes wet circuit removes wet circuit in response to first, and second includes the second control unit, the second delay circuit and the second warning reminding circuit except wet circuit；The first dehumidifier and the second dehumidifier are controlled by the time-delay relay of the first delay circuit and the second delay circuit.The humidity in active filter is adjusted by judging the humidity in active filter for the utility model, while have the function of warning reminding, with easy to use, cost it is low, simple in construction and safe the characteristics of.
Description
Technical field
The utility model belongs to active filter technical field, is related to a kind of active filter protected with humidity.
Background technology
Active Power Filter-APF (APF) be it is a kind of be used for dynamic harmonic wave, the novel electric power electric device of compensating reactive power,
The harmonic wave and the idle of change that it can all change to size and frequency are compensated.Be using modern power electronics technology and
The novel electric power harmonic wave control special equipment that Digital Signal Processing based on high-speed dsp device is made.It is by instruction current
Two major part compositions of computing circuit and compensation current occuring circuit.Electricity in the real-time monitoring wire of instruction current computing circuit
Stream, and analog current signal is converted into data signal, feeding high speed digital signal processor (DSP) is handled signal,
Harmonic wave is separated with fundamental wave, and driving pulse, driving are sent out to compensation current occuring circuit with pulsewidth modulation (PWM) signal form
IGBT or IPM power models, generate equal with mains by harmonics current amplitude, opposite polarity compensation electric current injection power network, to humorous
Ripple electric current is compensated or offset, and actively eliminates electric harmonic.
The problem of existing IGBT switch is present, the problem of except temperature well-known to those skilled in the art and power consumption,
Also one problem, if the ambient humidity that IGBT switches are set is too high, and causes condensation to fail, general, IGBT should work
Make under normal damp condition, cloth can not be operated in the excessive place of humidity, but in actual Active Power Filter-APF in use, having
Active power filter is usually it cannot be guaranteed that residing ambient humidity, once so humidity is too high to be likely to result in active filter
IGBT pipes damage.
In order to overcome disadvantages mentioned above, a kind of active electric power filter protected with humidity disclosed in application number 201420560087.3
Ripple device, it mainly includes drive circuit, controller, current detection circuit, outside three-phase input circuit, filtering main circuit, also wrapped
Humidity protection circuit is included, the humidity protection circuit includes sensor circuit, for detecting IGBT ambient humidities.First delay
Circuit, the second delay circuit, warning circuit, for reminding user's humidity environment abnormal；Protection circuit, for protecting IGBT not
Because of humidity extraordinary failure；Protection switch K1, is connected to filtering main circuit and between outside three phase mains, in response to the second delay electricity
Road, each module is relatively independent to be set, and both can effectively be coordinated, again can be in order to repair, and facilitates each circuit mould
The setting of block is improved, and can be played a part of alarming when Active Power Filter-APF humidity is abnormal and be protected.
But then directly active filter is jumped when Active Power Filter-APF humidity is abnormal and breaks to protect active filter,
And directly jumping, then the humidity in active filter can not be adjusted after disconnected active filter, cause humidity in wave filter without
Method is eliminated in time, in order to ensure the normal work of active filter, now designs a kind of active power filtering protected with humidity
Device, and the working condition of dehumidifier can be reminded.
Utility model content
A kind of active filter protected with humidity that the utility model is provided, by detecting circuit, the first dehumidifying electricity
Road and second solves that humidity is excessive or mistake except the humidity in active filter is adjusted wet circuit and carries out warning reminding
The low infringement caused to active filter and the problem of the working condition of dehumidifier can not be judged.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of active filter protected with humidity, including detection circuit, first are except wet circuit and second is except wet circuit,
Described first includes the first control unit, the first delay circuit and the first warning reminding circuit except wet circuit；
First control unit includes the first AC relay switch KM1, first resistor R1, the first triode Q1 and the
Two AC relay coil KM2, the first AC relay switch KM1 pass through first resistor R1 and the first triode Q1 base
Pole is connected, and the colelctor electrode of the first triode Q1 meets power supply VCC, the described 1st by the second AC relay coil KM2
Pole pipe Q1 transmitting collection ground connection；First delay circuit and the first warning reminding circuit and the first dehumidifier constitute loop；
Described second except wet circuit in response to first remove wet circuit, described second except wet circuit include the second control unit,
Second delay circuit and the second warning reminding circuit；
Second control unit includes the first time-delay relay switch KT1, second resistance R2, the second triode Q2 and the
Three AC relay coil KM3, the first time-delay relay switch KT1 pass through second resistance R2 and the second triode Q2 base
Pole is connected, and the colelctor electrode of the second triode Q2 meets power supply VCC, the described 2nd 3 by the 3rd AC relay coil KM3
Pole pipe Q2 transmitting collection ground connection；Second delay circuit and the second warning reminding circuit and the second dehumidifier constitute loop.
Further, first delay circuit includes the second AC relay switch KM2 in normally open and the
One time-delay relay coil KT1；Second delay circuit include in normally open the 3rd AC relay switch KM3 and
Second time-delay relay coil KT2.
Further, the first warning reminding circuit includes the first alarm lamp LED1 and the first voice guard
HA1；The second warning reminding circuit includes the second alarm lamp LED2 and second sound alarm HA2.
Further, the detection circuit includes positive humidity coefficient humistor R1, negative humidity coefficient humistor R2, the
Two time-delay relays switch KT2 and the first AC relay coil KM1, described positive humidity coefficient humistor R1 one end and second
Time-delay relay switchs KT2 connections, and the other end is connected with the first AC relay coil KM1 one end；The negative humidity coefficient
Humistor R2 is in parallel with positive humidity coefficient humistor R1；The other end ground connection of the first AC relay coil KM1.
Further, under normal humidity, the positive humidity coefficient humistor R1 and negative humidity coefficient humistor R2's
Resistance is equal.
The beneficial effects of the utility model：Whether the utility model is by detecting the humidity in circuit judges active filter
It is abnormal, and according to the humidity of detection to first except wet circuit is responded, first except the first delay circuit in wet circuit is to the
Two carry out delay response except wet circuit, and then control the work of the first dehumidifier and the second dehumidifier, accurate with Humidity Detection
The characteristics of, by first except wet circuit and second remove wet circuit in be provided with time-delay relay, it is ensured that the first dehumidifier and
Second dehumidifier carries out normal work, and the function with warning reminding, while having easy to use, cost low, simple in construction
And it is safe the characteristics of.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, make required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is system block diagram of the present utility model；
Fig. 2 is circuit theory diagrams of the present utility model；
In accompanying drawing, the list of parts representated by each label is as follows：
1- detects circuit, and 2- first removes wet circuit, and 3- second removes wet circuit, and the control units of 4- first, 5- second controls list
Member, the delay circuits of 6- first, the delay circuits of 7- second, 8- the first warning reminding circuits, 9- the second warning reminding circuits.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belongs to the scope of the utility model protection.
Refer to Fig. 1, shown in 2, a kind of active filter protected with humidity, including main circuit, drive circuit, harmonic wave
Detection calculations circuit, current follow-up control circuit, in addition to humidity protection circuit, humidity protection circuit include detection circuit 1, the
One removes wet circuit 3 except wet circuit 2 and second；
Detection circuit 1 removes wet circuit 2 and second except wet circuit 3 is connected with first respectively；
Circuit 1 is wherein detected, the node between outside three-phase input electricity and load, including positive humidity coefficient wet sensitive electricity is connected to
R1 is hindered, positive humidity coefficient humistor R1 one end is connected with the second time-delay relay switch KT2, and the other end exchanges relay with first
Device coil KM1 one end connection；Negative humidity coefficient humistor R2 is in parallel with positive humidity coefficient humistor R1, first exchange after
Electric apparatus coil KM1 other end ground connection.
First is connected to detection circuit 1 except wet circuit 2, in response to detection circuit 1, and first includes the first control except wet circuit 2
Unit 4, the first delay circuit 6 and the first warning reminding circuit 8；First control unit 4 includes the first AC relay switch
KM1, first resistor R1, the first triode Q1 and the second AC relay coil KM2, the first AC relay switch KM1 pass through
First resistor R1 is connected with the first triode Q1 base stage, and the first triode Q1 colelctor electrode passes through the second AC relay coil
KM2 connects power supply VCC, the first triode Q1 transmitting collection ground connection；First delay circuit 6 and the first warning reminding circuit 8 and first
Dehumidifier constitutes loop, and the first delay circuit 6 includes the delays of the second AC relay switch KM2 and first in normally open
Relay coil KT1；First warning reminding circuit 8 includes the first alarm lamp LED1 and the first voice guard HA1.
Second is connected to detection circuit 1 and first except between the node of wet circuit 2 except wet circuit 3, in response to first except wet circuit
2, second includes the second control unit 5, the second delay circuit 7 and the second warning reminding circuit 9 except wet circuit 3；Second control is single
Member 5 includes the first time-delay relay switch KT1, second resistance R2, the second triode Q2 and the 3rd AC relay coil KM3,
First time-delay relay switch KT1 is connected by second resistance R2 with the second triode Q2 base stage, the second triode Q2 collection
Electrode meets power supply VCC, the second triode Q2 transmitting collection ground connection by the 3rd AC relay coil KM3；Second delay circuit 7
Loop is constituted with the second warning reminding circuit 9 and the second dehumidifier, the second delay circuit 7 includes the 3rd friendship in normally open
Current relay switchs KM3 and the second time-delay relay coil KT2；Second warning reminding circuit 9 includes the second alarm lamp
LED2 and second sound alarm HA2.
If the humidity in active filter is normal, positive humidity coefficient humistor R1 and negative humidity coefficient humistor R2
Resistance it is identical, when humidity is too high or too low, wherein the rise of a humidity quick resistance, another quick resistance drop of humidity
It is low, it is in parallel due to being carried out between two resistance, cause the equivalent resistance resistance after parallel connection to reduce, when equivalent resistance is reduced to certain value
When, flow through in the first AC relay coil KM1 electric current increase meet adhesive condition, with design structure it is simple the characteristics of；
When the first AC relay coil KM1 obtains electric, the first the first AC relay switch KM1 removed in wet circuit 2 is closed
Close, electric current the first closed AC relay switch KM1 and first resistor R1 turns on the first triode Q1, and then second hands over
Current relay coil KM2 obtains electric, the normally opened second AC relay switch KM2 closures in the first delay circuit 6 so that first removes
Wet device is operated, while the first alarm lamp LED1 and the first voice guard HA1 in the first warning reminding circuit 8 are equal
Warning reminding is sent, the first time-delay relay coil KT1 enters line delay in the process；
When the first time-delay relay coil KT1 delay times then, second remove wet circuit 3 in the first time-delay relay open
KT1 closures are closed, the first closed time-delay relay of electric current switchs KT1 and second resistance R2 so that the second triode Q2 is turned on,
And then the 3rd AC relay coil KM3 obtain electric, normally opened 3rd AC relay switch KM3 in the second delay circuit 7 closure,
Second dehumidifier is operated, while the second alarm lamp LED2 and second sound alarm in the second warning reminding circuit 9
Device HA2 sends warning reminding, and the second time-delay relay KT2 enters line delay in the process；
When the second time-delay relay KT2 delay time then, detection circuit 1 in the second time-delay relay switch KT2
Off-state is converted into by normally off, and then the first dehumidifier is stopped with the second dehumidifier.
The utility model is by detecting whether the humidity in circuit judges active filter is abnormal, and according to the humidity of detection
To first except wet circuit is responded, the first the first delay circuit removed in wet circuit removes wet circuit to second and carries out delay sound
Should, and then control the work of the first dehumidifier and the second dehumidifier, with Humidity Detection it is accurate the characteristics of, by the first dehumidifying
Circuit and second removes in wet circuit and is provided with time-delay relay, it is ensured that the first dehumidifier and the second dehumidifier carry out normal work
Make, and the function with warning reminding, while having the characteristics of easy to use, cost is low, simple in construction and safe.
Above content is only to the utility model structure example and explanation, the technology people of affiliated the art
Member is made various modifications or supplement to described specific embodiment or substituted using similar mode, without departing from reality
With new structure or surmount scope defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (5)
1. a kind of active filter protected with humidity, including detection circuit (1), first are except wet circuit (2) and the second dehumidifying
Circuit (3), it is characterised in that：Described first includes the first control unit (4), the first delay circuit (6) and the except wet circuit (2)
One warning reminding circuit (8)；
First control unit (4) includes the first AC relay switch KM1, first resistor R1, the first triode Q1 and the
Two AC relay coil KM2, the first AC relay switch KM1 pass through first resistor R1 and the first triode Q1 base
Pole is connected, and the colelctor electrode of the first triode Q1 meets power supply VCC, the described 1st by the second AC relay coil KM2
Pole pipe Q1 transmitting collection ground connection；First delay circuit (6) is constituted back with the first warning reminding circuit (8) and the first dehumidifier
Road；
Described second removes wet circuit (3) removes wet circuit (2) in response to first, and described second includes the second control except wet circuit (3)
Unit (5), the second delay circuit (7) and the second warning reminding circuit (9)；
Second control unit (5) includes the first time-delay relay switch KT1, second resistance R2, the second triode Q2 and the
Three AC relay coil KM3, the first time-delay relay switch KT1 pass through second resistance R2 and the second triode Q2 base
Pole is connected, and the colelctor electrode of the second triode Q2 meets power supply VCC, the described 2nd 3 by the 3rd AC relay coil KM3
Pole pipe Q2 transmitting collection ground connection；Second delay circuit (7) is constituted back with the second warning reminding circuit (9) and the second dehumidifier
Road.
2. a kind of active filter protected with humidity according to claim 1, it is characterised in that：First delay
Circuit (6) includes the second AC relay switch KM2 and the first time-delay relay coil KT1 in normally open；Described
Two delay circuits (7) include the 3rd AC relay switch KM3 and the second time-delay relay coil KT2 in normally open.
3. a kind of active filter protected with humidity according to claim 1, it is characterised in that：First alarm
Alert circuit (8) includes the first alarm lamp LED1 and the first voice guard HA1；The second warning reminding circuit (9)
Including the second alarm lamp LED2 and second sound alarm HA2.
4. a kind of active filter protected with humidity according to claim 1, it is characterised in that：The detection circuit
(1) positive humidity coefficient humistor R1, negative humidity coefficient humistor R2, the second time-delay relay switch KT2 and first are included
AC relay coil KM1, described positive humidity coefficient humistor R1 one end is connected with the second time-delay relay switch KT2, separately
One end is connected with the first AC relay coil KM1 one end；The negative humidity coefficient humistor R2 and positive humidity coefficient are wet
Quick resistance R1 is in parallel；The other end ground connection of the first AC relay coil KM1.
5. a kind of active filter protected with humidity according to claim 4, it is characterised in that：Under normal humidity,
The positive humidity coefficient humistor R1 and negative humidity coefficient humistor R2 resistance are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720214923.6U CN206517062U (en) | 2017-03-07 | 2017-03-07 | A kind of active filter protected with humidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720214923.6U CN206517062U (en) | 2017-03-07 | 2017-03-07 | A kind of active filter protected with humidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517062U true CN206517062U (en) | 2017-09-22 |
Family
ID=59870112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720214923.6U Expired - Fee Related CN206517062U (en) | 2017-03-07 | 2017-03-07 | A kind of active filter protected with humidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165671A (en) * | 2019-05-14 | 2019-08-23 | 安徽亚辉电气自动化有限公司 | A kind of self-regulation Active Power Filter-APF |
-
2017
- 2017-03-07 CN CN201720214923.6U patent/CN206517062U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165671A (en) * | 2019-05-14 | 2019-08-23 | 安徽亚辉电气自动化有限公司 | A kind of self-regulation Active Power Filter-APF |
| CN110165671B (en) * | 2019-05-14 | 2022-11-22 | 安徽亚辉电气自动化有限公司 | Self-adjusting active power filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171113 Address after: 234000 Anhui city of Suzhou Province East Village ten High-tech Zone North Ling Qing Road Patentee after: Anhui Sewoll Electrical Technology Co., Ltd. Address before: 230000 B, 1210-2, Hefei, Anhui, 860 Patentee before: Hefei Saiwo Energy Technology Co Ltd |
|
| 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: 20170922 Termination date: 20210307 |