CN109039037A - A kind of high voltage direct current filter - Google Patents
A kind of high voltage direct current filter Download PDFInfo
- Publication number
- CN109039037A CN109039037A CN201810646517.6A CN201810646517A CN109039037A CN 109039037 A CN109039037 A CN 109039037A CN 201810646517 A CN201810646517 A CN 201810646517A CN 109039037 A CN109039037 A CN 109039037A
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- China
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- high voltage
- direct current
- voltage direct
- differential mode
- negative anodes
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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
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Filters And Equalizers (AREA)
Abstract
The present invention relates to a kind of high voltage direct current filters, including filter circuit unit, high voltage relief circuit unit, high voltage direct current positive and negative anodes input terminal, high voltage direct current positive and negative anodes output end；Filter circuit unit includes common mode filtering circuit and differential mode filter circuit, and high voltage relief circuit unit includes branch of releasing；Common mode filtering circuit positive and negative anodes input terminal connects high voltage direct current positive and negative anodes input terminal, and common mode filtering circuit positive and negative anodes output end connects differential mode filter circuit；Differential mode filter circuit includes differential mode filter capacitor and differential mode filter inductance, differential mode filter capacitor positive and negative anodes connect common mode filtering circuit, the first connecting pin of differential mode filter inductance connects differential mode filter capacitor cathode, branch of releasing is connected between differential mode filter capacitor positive and negative anodes, differential mode filter capacitor anode and differential mode filter inductance second connection end are separately connected high voltage direct current positive and negative anodes output end.The present invention is filtered out by the common-mode noise and differential mode noise exported to high-voltage DC power supply, improves the quality of DC power supply.
Description
Technical field
The present invention relates to a kind of high voltage direct current filters, belong to DC filtering technical field.
Background technique
In high-voltage direct current switch power-supply system, the electromagnetic interface filter applied to high voltage direct current output utilizes less.With section
Skill development, a part of special high-voltage load has the DC output power quality of high-voltage direct current switch power-supply system higher and higher
Requirement, especially to high voltage direct current output Ripple Noise require it is higher and higher.
Summary of the invention
The object of the present invention is to provide a kind of high voltage direct current filters, how to filter out high voltage direct current output for solving
The problem of Ripple Noise.
In order to solve the above technical problems, the present invention provides a kind of high voltage direct current filter, including filter circuit unit,
High voltage relief circuit unit, high voltage direct current positive and negative anodes input terminal, high voltage direct current positive and negative anodes output end；The filter circuit unit packet
Common mode filtering circuit and differential mode filter circuit are included, the high voltage relief circuit unit includes branch of releasing；The common mode filtering electricity
The positive and negative anodes input terminal on road is separately connected the high voltage direct current positive and negative anodes input terminal, and the positive and negative anodes output end of common mode filtering circuit connects
Connect the differential mode filter circuit；The differential mode filter circuit includes differential mode filter capacitor and differential mode filter inductance, the differential mode filter
The positive and negative anodes connecting pin of wave capacitor connects the positive and negative anodes output end of the common mode filtering circuit, and the first of the differential mode filter inductance
Connecting pin connects the cathode connecting pin of the differential mode filter capacitor, connects between the positive and negative anodes connecting pin of the differential mode filter capacitor
There are the branch of releasing, the second connection end difference of the anode connection terminal of the differential mode filter capacitor and the differential mode filter inductance
Connect the high voltage direct current positive and negative anodes output end.
The beneficial effects of the present invention are: by setting common mode filtering circuit and differential mode filter circuit, respectively to high voltage direct current
Common-mode noise and differential mode noise in the high-voltage electricity of power supply output are filtered out, dry to provide ripple for high voltage direct current electrical equipment
DC power supply as small as possible is disturbed, the quality of DC power supply is improved.
Further, in order to realize the automatic control function of branch of releasing, the high voltage relief circuit unit further includes letting out
Put branch control circuit, the branch of releasing described in the control connection of branch control circuit of releasing.
Further, in order to understand in real time high voltage direct current output voltage swing, the high voltage direct current positive and negative anodes output end it
Between be also connected with high voltage direct current sample circuit unit.
Further, in order to realize filtering out for common-mode noise, the common mode filtering circuit includes the first common mode inductance and the
It is defeated that first connecting pin of two common mode inductances, first common mode inductance and the second common mode inductance is separately connected high voltage direct current positive and negative anodes
Enter to hold, the second connection end of first common mode inductance and the second common mode inductance is separately connected the positive and negative of the differential mode filter capacitor
Pole connecting pin is also connected with common mode capacitance branch between first common mode inductance and the second connection end of the second common mode inductance.
Further, the branch control circuit of releasing includes accessory power supply plate, the power supply connection of the accessory power supply plate
End is connected with rectification module for connecting AC power source, and the first of the accessory power supply plate is connected with for electric connecting terminal power supply
The coil of one relay, the contact switch string of first relay are located in the branch of releasing.
Further, the second of the accessory power supply plate is connected with the coil of the second relay, institute for electric connecting terminal power supply
The contact switch for stating the second relay is provided with relay status detection circuit, and the second of the accessory power supply plate is for electric connecting terminal
And first between electric connecting terminal link be arranged.
Further, the high voltage direct current sample circuit unit is resitstance voltage divider.
Further, string is equipped at least two resistance in the branch of releasing.
Detailed description of the invention
Fig. 1 is the internal circuit schematic diagram of high voltage direct current filter of the present invention；
Fig. 2 is the appearance assumption diagram of high voltage direct current filter of the present invention；
Fig. 3 is the inside appliance device layout of high voltage direct current filter of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
The present invention will be described in further detail for example.
Effective attenuation is carried out for the Ripple Noise to high-voltage direct current switch power-supply system direct current output, to obtain low ripple
The high-quality DC output power of noise, the present invention provides a kind of high voltage direct current filter, the high voltage direct current filters
It is compact-sized, securely and reliably, it can be effectively reduced the Ripple Noise in high-voltage direct current switch power-supply system direct current output, meet portion
Performance requirement of the different high-voltage load of dtex to high-quality output DC source.
As shown in Figure 1, the high voltage direct current filter includes filter circuit unit, high voltage relief circuit unit, high straightening
It is negative to flow electrode input end XS01, high voltage direct current negative input XS02, high voltage direct current cathode output end XS03 and high voltage direct current
Pole output end XS04.Wherein, filter circuit unit is high for the Ripple Noise in the output of attenuating high pressure direct-current switch power supply system
After straightening current switching power supply stops output high voltage direct current, using high voltage relief circuit unit to the high pressure energy in direct current output circuit
Amount is released.
Wherein, filter circuit unit includes common mode filtering circuit and differential mode filter circuit, the positive and negative anodes of common mode filtering circuit
Input terminal is separately connected high voltage direct current positive and negative anodes input terminal XS01 and XS02, and the positive and negative anodes output end connection of common mode filtering circuit is poor
Mould filter circuit.In the present embodiment, common mode filtering circuit includes the first common mode inductance L1 and the second common mode inductance L2, and first is total
The first connecting pin of mould inductance L1 and the second common mode inductance L2 are separately connected high voltage direct current positive and negative anodes input terminal XS01 and XS02, the
The second connection end of one common mode inductance L1 and the second common mode inductance L2 connect differential mode filter circuit.Common mode inductance L1 and L2 coil is adopted
With corresponding high pressure level insulated wire coiling in suitable magnetic core, can meet high pressure it is positive and negative between and high pressure and magnetic core between it is electrical absolutely
Edge avoids voltage breakdown between two coils.Also, the second connection end of the first common mode inductance L1 and the second common mode inductance L2 it
Between be also connected with common mode capacitance branch.It is in series that the common mode capacitance branch routes common mode capacitance C1 and C2, and series connection point is grounded, altogether
Mould capacitor C1 and C2 selects suitable pressure voltage and capacitance according to voltage class.Common mode inductance L1, L2 and capacitor C1 and C2 are common
Common mode filtering circuit is constituted, for carrying out effective attenuation to the common-mode noise in high-voltage direct current switch power-supply system, to filter out
Common mode Ripple Noise in high voltage direct current.
Differential mode filter circuit includes differential mode filter capacitor C3 and differential mode filter inductance L2, the positive and negative anodes of differential mode filter capacitor C3
Connecting pin connects the positive and negative anodes output end of common mode filtering circuit, and the first connecting pin of differential mode filter inductance L2 connects differential mode filtered electrical
Hold the cathode connecting pin of C3, the anode connection terminal of differential mode filter capacitor C3 and the second connection end of differential mode filter inductance L2 connect respectively
Meet high voltage direct current positive and negative anodes output end XS03 and XS04.In practical applications, differential mode filter capacitor C3 is selected according to voltage class
Suitable pressure voltage and capacitance, so that pressure resistance meets relevant voltage between the differential mode filter capacitor interpolar and interpolar and capacitance shell
Class requirement.Differential mode filter inductance L2 is suspended in negative high-voltage end, main to consider high-voltage isulation between differential mode filter inductance and ground.Difference
Mould filter capacitor C3 and differential mode filter inductance L2 constitute differential mode filter circuit, for in high-voltage direct current switch power-supply system
Differential mode noise carries out effective attenuation, to filter out the differential mode Ripple Noise in high voltage direct current.
High voltage relief circuit unit includes branch of releasing, and the positive and negative anodes which is connected to differential mode filter capacitor C3 connect
Connect between end, for receive release signal after the high-pressure energy that capacitor in filter circuit unit stores released and finishes.?
In the present embodiment, release branch routing resistance R1, R2 and the R3 are in series, and branch string of releasing sets resistance according to voltage class and function
Rate grade carries out suitable type selecting.It certainly, can be according to the number needed to select series resistance of releasing as other embodiments
Mesh.
In order to branch of releasing closure and shutdown situation control, high voltage relief circuit unit further includes branch of releasing
Control circuit, which connects branch of releasing, for working normally in high voltage direct current filter
Cheng Zhong controls branch disconnection of releasing；And receive release order when, control release branch closure to consume filter circuit list
The high-pressure energy that capacitor stores in member.
In the present embodiment, as shown in Figure 1, this is released, branch control circuit includes an accessory power supply plate, auxiliary electricity
The power connector end of source plate is connected with rectification module, which passes through Alternating Current Power Supply terminal XS06 connection AC power source,
XS06 is low-voltage terminal.Wherein, which is uncontrollable rectifier bridge, naturally it is also possible to be selected as full-controlled rectifier bridge.Auxiliary electricity
The first of source plate is connected with the coil of the first relay K1 for electric connecting terminal power supply, and the contact switch string of the first relay K1 is located at
It releases in branch.
In order to which the state to the first relay K1 contact switch is monitored, the second of accessory power supply plate for electric connecting terminal also
For being electrically connected with the coil of the second relay K2, the contact switch of second relay K2 is provided with relay status detection electricity
Road.In the present embodiment, the contact switch of the second relay K2 passes through relay feedback signal terminal XS07 connection relay shape
State detection circuit, XS07 belong to low-voltage terminal.
The working principle of above-mentioned high voltage relief circuit unit are as follows: by the Alternating Current Power Supply signal of control terminal XS06, to control
The disconnection and closed action of high-voltage relay K1 processed, when exporting in fact now with high voltage direct current, K1 relay is in an off state, nothing
When high voltage direct current exports, K1 relay is in closed state.First due to accessory power supply plate powers for electric connecting terminal and second
Link setting between connecting pin, and the working condition of K1 relay can be used by one group of linkage node signal of voltage relay K2
To differentiate whether high voltage direct current vent unit is in normal operating conditions.
In order to be measured to high voltage direct current output size, to differentiate the voltage value in direct current output circuit, high voltage direct current
High voltage direct current sample circuit unit is also connected between positive and negative anodes output end, the high voltage direct current sample circuit unit is by electric resistance partial pressure
Device R4 is constituted, and the sampled output of resitstance voltage divider R4 connects voltage sample output terminal (low pressure sampled signal terminal) XS05,
For being the small signal of accessible DC voltage by high voltage direct current filter output end DC high voltage value no-load voltage ratio, it is output to outer
Portion's electrical equipment, for identifying that output voltage values in filter, XS05 are low-voltage terminal.
By in above-mentioned high voltage direct current filter each circuit devcie and auxiliary function circuit devcie be arranged at one
In closed filtering fuel tank, the transformer oil with excellent heat conductivity, good insulating performance, transformer oil are filled in the filtering fuel tank
For meeting, high pressure is exhausted between high-voltage isulation and High-Voltage Electrical Appliances device and ground between appliance device and appliance device in filtering fuel tank
Edge is also used to meet the heat dissipation of heating electric appliance device.
Filtering fuel tank medial surface is equipped with the leakproofness terminal of transformer oil resistant corrosion, filters and fills for realizing high voltage direct current
Set the internal electrical connection with external electrical equipment.Wherein, light current and control electric signal use low pressure seal terminal through walls, high
Signal is pressed to use high-pressure tightness terminal through walls, filtering top of oil-tank is sealed using top cover with corrosion resistant type gasket.Such as
Shown in Fig. 2,1 is the shell of high voltage direct current filter, and 2 be outer high with high voltage direct current filter in high voltage direct current filter
Voltage electrical connection terminal, the terminal are high pressure sealing terminal, and 3 is in high voltage direct current filter and outside high voltage direct current filters
Low-voltage electrical connection terminal, the terminal are low pressure seal terminal.
Fig. 3 gives layout of the appliance device in filtering fuel tank inside high voltage direct current filter, wherein 4 be common mode
Inductance, 5 be high pressure differential mode capacitor, and 6 be high-voltage bleeder R4, which is by filter output end DC high voltage value no-load voltage ratio
The small signal of DC voltage, 7 be high voltage relief circuit unit.
Foregoing description is used only to help to understand the solution of the present invention and core concept, for ordinary skill people
Member, guiding theory according to the present invention, the various modifications model designed still fall within protection scope of the present invention using design
It is interior.
Claims (8)
1. a kind of high voltage direct current filter, which is characterized in that including filter circuit unit, high voltage relief circuit unit, high pressure
Direct current positive and negative anodes input terminal, high voltage direct current positive and negative anodes output end；The filter circuit unit includes common mode filtering circuit and differential mode
Filter circuit, the high voltage relief circuit unit include branch of releasing；The positive and negative anodes input terminal of the common mode filtering circuit is distinguished
The high voltage direct current positive and negative anodes input terminal is connected, the positive and negative anodes output end of common mode filtering circuit connects the differential mode filter circuit；
The differential mode filter circuit includes differential mode filter capacitor and differential mode filter inductance, the positive and negative anodes connecting pin of the differential mode filter capacitor
The positive and negative anodes output end of the common mode filtering circuit is connected, the first connecting pin of the differential mode filter inductance connects the differential mode filter
The cathode connecting pin of wave capacitor is connected with the branch of releasing between the positive and negative anodes connecting pin of the differential mode filter capacitor, described
The anode connection terminal of differential mode filter capacitor and the second connection end of the differential mode filter inductance are being separately connected the high voltage direct current just
Cathode output end.
2. high voltage direct current filter according to claim 1, which is characterized in that the high voltage relief circuit unit also wraps
Include branch control circuit of releasing, the branch of releasing described in the control connection of branch control circuit of releasing.
3. high voltage direct current filter according to claim 1 or 2, which is characterized in that the high voltage direct current positive and negative anodes are defeated
High voltage direct current sample circuit unit is also connected between outlet.
4. high voltage direct current filter according to claim 1 or 2, which is characterized in that the common mode filtering circuit includes
First connecting pin of the first common mode inductance and the second common mode inductance, first common mode inductance and the second common mode inductance is separately connected
The second connection end of high voltage direct current positive and negative anodes input terminal, first common mode inductance and the second common mode inductance is separately connected the difference
The positive and negative anodes connecting pin of mould filter capacitor is also connected between first common mode inductance and the second connection end of the second common mode inductance
There is common mode capacitance branch.
5. high voltage direct current filter according to claim 2, which is characterized in that the branch control circuit of releasing includes
Accessory power supply plate, the power connector end of the accessory power supply plate is connected with the rectification module for connecting AC power source, described auxiliary
Help the first of the power panel coil that the first relay is connected with for electric connecting terminal power supply, the contact switch string of first relay
It is located in the branch of releasing.
6. high voltage direct current filter according to claim 5, which is characterized in that the second power supply of the accessory power supply plate
Connecting pin supplies the coil for being electrically connected with the second relay, and the contact switch of second relay is provided with relay status detection
Circuit, the second of the accessory power supply plate are arranged for electric connecting terminal and first for linking between electric connecting terminal.
7. high voltage direct current filter according to claim 3, which is characterized in that the high voltage direct current sample circuit unit
For resitstance voltage divider.
8. high voltage direct current filter according to claim 1 or 2, which is characterized in that go here and there and be equipped in the branch of releasing
At least two resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810646517.6A CN109039037A (en) | 2018-06-21 | 2018-06-21 | A kind of high voltage direct current filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810646517.6A CN109039037A (en) | 2018-06-21 | 2018-06-21 | A kind of high voltage direct current filter |
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| Publication Number | Publication Date |
|---|---|
| CN109039037A true CN109039037A (en) | 2018-12-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810646517.6A Pending CN109039037A (en) | 2018-06-21 | 2018-06-21 | A kind of high voltage direct current filter |
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| CN (1) | CN109039037A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713887A (en) * | 2019-02-28 | 2019-05-03 | 苏州浪潮智能科技有限公司 | A kind of Switching Power Supply and its output circuit |
| CN111398655A (en) * | 2020-03-08 | 2020-07-10 | 苏州浪潮智能科技有限公司 | Input current detection circuit and method |
| CN113098420A (en) * | 2021-03-05 | 2021-07-09 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Direct current filter circuit and method |
| CN113572348A (en) * | 2021-07-27 | 2021-10-29 | 捷蒽迪电子科技(上海)有限公司 | Switch circuit with residual voltage releasing function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713887A (en) * | 2019-02-28 | 2019-05-03 | 苏州浪潮智能科技有限公司 | A kind of Switching Power Supply and its output circuit |
| CN111398655A (en) * | 2020-03-08 | 2020-07-10 | 苏州浪潮智能科技有限公司 | Input current detection circuit and method |
| CN111398655B (en) * | 2020-03-08 | 2022-12-09 | 苏州浪潮智能科技有限公司 | Input current detection circuit and method |
| CN113098420A (en) * | 2021-03-05 | 2021-07-09 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Direct current filter circuit and method |
| CN113098420B (en) * | 2021-03-05 | 2022-06-24 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Direct current filter circuit and method |
| CN113572348A (en) * | 2021-07-27 | 2021-10-29 | 捷蒽迪电子科技(上海)有限公司 | Switch circuit with residual voltage releasing function |
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Application publication date: 20181218 |