CN107888062A - A kind of high-power corona discharge devices - Google Patents
A kind of high-power corona discharge devices Download PDFInfo
- Publication number
- CN107888062A CN107888062A CN201711064765.1A CN201711064765A CN107888062A CN 107888062 A CN107888062 A CN 107888062A CN 201711064765 A CN201711064765 A CN 201711064765A CN 107888062 A CN107888062 A CN 107888062A
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- semiconductor
- oxide
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- voltage
- circuit
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Classifications
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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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock
Abstract
The invention belongs to power technique fields, disclose a kind of high-power corona discharge devices, including accessory power supply, controlling switch, on-off circuit and bleeder resistance；Wherein, one end of controlling switch is connected with accessory power supply, and the other end is connected with on-off circuit, passes through the conducting and cut-off of the voltage change controlling switch circuit of accessory power supply；One end of bleeder resistance is connected with bus positive pole, and the other end is connected by on-off circuit with bus negative pole；Bleeder resistance is connected in parallel with bus when on-off circuit turns on, and discharges the high voltage on power source bus by bleeder resistance, bleeder resistance disconnects with bus when on-off circuit ends.The high voltage that this high-power corona discharge devices provided by the invention can safely and fast release on bus in high-power power cut-off, discharge loop is automatically cut off when high-power power up is powered, does not influence the normal work of high-power power supply.
Description
Technical field
The invention belongs to electric and electronic technical field, more particularly, to a kind of high-power corona discharge devices.
Background technology
In Vehicular power system, high-power power supply is low defeated for the direct current of safety and stability by high input voltage photovoltaic conversion
Go out voltage, a fairly large number of large bulk capacitances of Chang Binglian are filtered on bus, and bus capacitor can provide instantaneous large-current.System
When electric on system, bus capacitor is constantly in charged state, when system cut-off, the big electricity of bus capacitor abrupt release of Large Copacity
Amount.High-power power supply is in trouble hunting, especially because high-power power supply not starting of oscillation or high-power power supply are opened
Close failure caused by tube open circuit, in most cases, the voltage at the high-voltage filtering capacitor both ends on high-power power source bus
Do not release, now busbar voltage is high pressure, and human body is in peril of one's life once more than 36V voltages are contacted, therefore possible
Under the conditions of as far as possible the high voltage relief at bus both ends is fallen.Bus capacitor nature discharge time is longer, makes troubles and deposits to maintenance
In potential safety hazard.
Conventional bus capacitor discharge mode：A kind of is that artificial circumscribing discharge circuit manually controls connecing for discharge circuit
Enter and turn off, this method needs externally fed to discharge circuit and needs manually operated, and underaction is convenient and has potential safety hazard；
Another kind controls the access of discharge loop and shut-off by an on-off circuit.Utility model patent CN2012207503 " one
Kind driver and its bus capacitor discharge circuit " and utility model patent CN2013208386 " a kind of bus capacitor discharging device "
All it is that the on-off circuit used controls the access of discharge loop and shut-off, " a kind of driver and its bus capacitor discharge circuit "
Problems be present：Discharge loop can be closed when bus capacitor discharges to a certain extent, and bus capacitor electricity is also all put
It is complete, still suffer from potential safety hazard；The control power supply of access and the disconnection of control discharge loop in " a kind of bus capacitor discharging device "
It is made up of AC power and rectification circuit, the large power supply for HVDC input and direct current output needs external control electricity
Source, not convenient enough and increase cost.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of high-power corona discharge dress
Put, the device safely and fast can release the voltage on power source bus completely, and not influence the normal of high-power power supply
Work and load capacity.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of high-power corona discharge devices,
Including accessory power supply, controlling switch, on-off circuit and bleeder resistance R1；
Controlling switch one end is connected with accessory power supply, and the other end is connected with on-off circuit, is become by the voltage of accessory power supply
Change the conducting and cut-off of controlling switch circuit；Bleeder resistance R1 one end is connected with the bus positive pole of high-power power supply, another
End is connected by on-off circuit with bus negative pole, and bleeder resistance R1 is connected in parallel with bus when on-off circuit turns on, on-off circuit
Bleeder resistance R1 disconnects with bus during cut-off.
Preferably, above-mentioned high-power corona discharge devices, its on-off circuit also include divider resistance R2, divider resistance
R2 one end is connected with bus positive pole, and the other end is connected with metal-oxide-semiconductor Q1 grid, when bus capacitor electricity is put into some last rank
Metal-oxide-semiconductor Q1 grid and source electrode both end voltage can not be provided during section, pass through divider resistance R2 and protective resistance after metal-oxide-semiconductor Q1 shut-offs
R3 all bleeds off last electricity, ensures that electric discharge is complete.
Preferably, above-mentioned high-power corona discharge devices, its controlling switch include the second voltage-regulator diode D2, three poles
Pipe Q2, electric capacity C1 and the second divider resistance R4, the 3rd divider resistance R5；
Its on-off circuit includes the first voltage-regulator diode D1, metal-oxide-semiconductor Q1 and protective resistance R3；
Wherein, metal-oxide-semiconductor Q1 grid is connected with triode Q2 colelctor electrode, and source electrode is connected with triode Q2 emitter stage,
Drain electrode is connected with bleeder resistance；First voltage-regulator diode D1 negative pole is connected with triode Q2 colelctor electrode, positive pole and triode
Q2 emitter stage is connected, the first voltage-regulator diode D1 and metal-oxide-semiconductor Q1 grid and sources connected in parallel；Protective resistance R3 and metal-oxide-semiconductor Q1
Grid and sources connected in parallel, for prevent metal-oxide-semiconductor Q1 puncture, and provide fixed bias ensure metal-oxide-semiconductor Q1 effectively turn off；
Second voltage-regulator diode D2 negative pole is connected with the output end of accessory power supply, positive pole by the 3rd divider resistance R5 with
Triode Q2 base stage is connected；Electric capacity C1 positive pole is connected with triode Q2 base stage, the emitter stage phase of negative pole and triode Q2
Even, the second divider resistance R4 is in parallel with electric capacity C1.
Preferably, above-mentioned high-power corona discharge devices, its bleeder resistance R1 one end are connected with bus positive pole, separately
One end is connected with metal-oxide-semiconductor Q1 drain electrode.
Preferably, the positive pole of above-mentioned high-power corona discharge devices, in addition to fuse, fuse one end and bus
It is connected, the other end is connected with bleeder resistance R1, for circuit overcurrent protection；It is further preferred that fuse is protected using low current
Dangerous silk.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) a kind of high-power corona discharge devices provided by the invention, it is disconnected in the maintenance of high-power power failure
When electric, by the cut-off between system without deaerator triode Q2 collector and emitter so as to control metal-oxide-semiconductor Q1 conducting, surely
Press diode D1 and Clamping voltages keep metal-oxide-semiconductor Q1 conducting voltages between metal-oxide-semiconductor Q1 grid source electrode, metal-oxide-semiconductor Q1 conductings make to let out
Electric discharge hinders R1 and on bus, the high voltage that can safely and fast release on bus, avoids causing danger；In high-power
When power up is powered, by the conducting between system without deaerator triode Q2 collector and emitter so as to controlling metal-oxide-semiconductor
Q1 cut-off, voltage-regulator diode D1 partial pressures fix the magnitude of voltage between transistor base and emitter stage, and the magnitude of voltage can cause three
Turned between pole pipe Q2 base stages and base stage, metal-oxide-semiconductor Q1 gate source voltages are 0, in cut-off state, bleeder resistance is connected with bus
Disconnect, do not influence the normal work of high-power power supply.
(2) a kind of high-power corona discharge devices provided by the invention, protective resistance R3 and metal-oxide-semiconductor Q1 grid and
Sources connected in parallel, junction capacity be present between metal-oxide-semiconductor Q1 grid and source electrode, to prevent metal-oxide-semiconductor Q1 breakdown from needing a resistance in parallel will
Electricity in junction capacity is bled off, and protective resistance R3 also provides fixed bias and ensures that metal-oxide-semiconductor Q1 is effectively turned off.
(3) a kind of high-power corona discharge devices provided by the invention, when bus capacitor electricity be put into it is last some
Metal-oxide-semiconductor Q1 grid and the then metal-oxide-semiconductor shut-off of source electrode both end voltage can not be provided during the stage, now bus also has few electricity, MOS
Electricity is all bled off by divider resistance R2 in parallel on bus, protective resistance R3 after pipe Q1 shut-offs, ensures that electric discharge is complete.
Brief description of the drawings
Fig. 1 is the circuit diagram of electric discharge device provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
A kind of high-power corona discharge devices provided by the present invention, including accessory power supply, controlling switch, switch electricity
Road, bleeder resistance and fuse.
Controlling switch is used for the conducting and cut-off of controlling switch circuit, including voltage-regulator diode D2, triode Q2, electric capacity C1
With divider resistance R4, R5, voltage-regulator diode D2 negative pole is connected with the output end of accessory power supply, and accessory power supply is high-power
The control power supply of power source internal, voltage-regulator diode D2 positive pole are connected with triode Q2 base stage by divider resistance R5, are used for
Stable triode Q2 base stages and emitter stage both end voltage, prevent whole discharge circuit hysteresis；Electric capacity C1 is filter capacitor, and partial pressure is electric
Hinder R5 and electric capacity C1 and form filter circuit, for sopping up triode Q2 base stages and emitter stage both ends noise, prevent triode Q2 from sending out
Emitter-base bandgap grading misleads with colelctor electrode, and electric capacity C1 positive pole is connected with triode Q2 base stage, the emitter stage of its negative pole and triode Q2
It is connected, divider resistance R4 is in parallel with electric capacity C1.
On-off circuit includes voltage-regulator diode D1, metal-oxide-semiconductor Q1 and divider resistance, and metal-oxide-semiconductor Q1 is voltage mode control, passes through control
The voltage at grid and source electrode both ends processed and then the turn-on and turn-off for controlling metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q1 grid and triode Q2 collection
Electrode is connected, and its source electrode is connected with triode Q2 emitter stage, and its drain electrode is connected with bleeder resistance R1；Voltage-regulator diode D1's is negative
Pole is connected with triode Q2 colelctor electrode, and positive pole is connected with triode Q2 emitter stage, voltage-regulator diode D1 and metal-oxide-semiconductor Q1 grid
Pole and sources connected in parallel；Divider resistance R2 one end is connected with bus positive pole, and the other end is connected with metal-oxide-semiconductor Q1 grid, protection electricity
R3 and metal-oxide-semiconductor Q1 grid and sources connected in parallel is hindered, junction capacity be present between metal-oxide-semiconductor Q1 grid and source electrode in real work, be
Prevent metal-oxide-semiconductor breakdown from needing a resistance in parallel to bleed off the electricity in junction capacity, protective resistance R3 provides fixed bias and ensures MOS
The effective shut-off of pipe.
Bleeder resistance R1 one end is connected by fuse F1 with bus positive pole, and the other end is connected with metal-oxide-semiconductor Q1 drain electrode.
Fuse selects the fuse of low current in the present embodiment, for circuit overcurrent protection.
The operation principle of the leadage circuit of the present embodiment is specifically described below.
High-power NPN transistor during triode Q2 is selected in the present embodiment, metal-oxide-semiconductor Q1 is preferably N-channel MOS pipe；It is high
When pressing large power supply normal work, the operating voltage of accessory power supply is 15V, is obtained by voltage-regulator diode D2 and divider resistance R5
The fixed voltage on divider resistance R4 is obtained, divider resistance R4 is connected in parallel between triode Q2 base stage and emitter stage, divider resistance
Voltage on R4 is the voltage between triode Q2 base stages and emitter stage, is turned between triode Q2 base stage and colelctor electrode, MOS
Pipe Q1 grid and source electrode both end voltage is zero, and cut-off state during metal-oxide-semiconductor Q1, bleeder resistance R1 is not connected in parallel on bus, female
Between line only and the part dead load that there is divider resistance R2, divider resistance R2 to provide high-power power supply.
High-power power failure or maintenance power-off, the voltage of accessory power supply is zero, triode Q2 base stages and emitter stage
Between voltage be zero, be off state between triode Q2 base stage and colelctor electrode, pass through voltage-regulator diode D1 Clamping voltages
Metal-oxide-semiconductor Q1 grid and source electrode both end voltage is kept, the voltage after divider resistance R2 partial pressures by obtaining and being much larger than metal-oxide-semiconductor Q1
Grid maximum threshold voltage ensure that metal-oxide-semiconductor Q1 is effectively turned on, protective resistance R3 be connected in parallel on metal-oxide-semiconductor Q1 grid and source electrode it
Between, junction capacity be present between metal-oxide-semiconductor Q1 grid and source electrode in real work, to prevent metal-oxide-semiconductor breakdown from needing a protection in parallel
Resistance R3 bleeds off the electricity in junction capacity, is also provided with fixed bias effect and ensures that metal-oxide-semiconductor Q1 is effectively turned off.Metal-oxide-semiconductor Q1
Conducting, bleeder resistance R1, divider resistance R2, protective resistance R3 are connected in parallel on bus, released on high-power power source bus
Resistance R1 resistance is generally several kilohms, and divider resistance R2 resistance is generally several megohms, and bleeder resistance R1 resistances are small, put
The electric time is fast, and the high pressure on bus is quickly released, and MOS can not be provided when bus capacitor electricity is put into some last stage
Then metal-oxide-semiconductor turns off pipe Q1 grid and source electrode both end voltage, and now bus also has few electricity, passes through mother after metal-oxide-semiconductor Q1 shut-offs
Divider resistance R2 in parallel, protective resistance R3 all bleed off last electricity on line.
Compared to existing electric discharge device, a kind of high-power corona discharge devices provided by the invention can be in high pressure
The high voltage that large power supply is safely and fast released on bus when powering off, cuts automatically when high-power power up is powered
Disconnected discharge loop, the normal work of high-power power supply is not influenceed.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (5)
- A kind of 1. high-power corona discharge devices, it is characterised in that including accessory power supply, controlling switch, on-off circuit and Bleeder resistance；One end of the controlling switch is connected with the accessory power supply, and the other end is connected with the on-off circuit, by aiding in electricity The conducting and cut-off of the voltage change controlling switch circuit in source；One end of bleeder resistance and the bus positive pole of high-power power supply It is connected, the other end is connected by the on-off circuit with bus negative pole, the bleeder resistance and mother when the on-off circuit turns on Line parallel connects, and the bleeder resistance disconnects with bus when the on-off circuit ends.
- 2. high-power corona discharge devices as claimed in claim 1, it is characterised in that the on-off circuit also includes the One divider resistance, one end of first divider resistance is connected with bus positive pole, the other end is connected with the grid of metal-oxide-semiconductor, works as mother Line capacitance, which is discharged to some stage, can not provide the grid and source electrode both end voltage of metal-oxide-semiconductor, pass through divider resistance after metal-oxide-semiconductor shut-off Electricity is all bled off with the protective resistance, ensures that electric discharge is complete.
- 3. high-power corona discharge devices as claimed in claim 1 or 2, it is characterised in that the controlling switch includes Second voltage-regulator diode D2, triode Q2, electric capacity C1 and the second divider resistance R4, the 3rd divider resistance R5；The on-off circuit includes the first voltage-regulator diode D1, metal-oxide-semiconductor Q1 and protective resistance R3；The grid of the metal-oxide-semiconductor Q1 is connected with the colelctor electrode of the triode Q2, source electrode is connected with triode Q2 emitter stage, leaks Pole is connected with the bleeder resistance；The negative pole of the first voltage-regulator diode D1 is connected with triode Q2 colelctor electrode, positive pole with Triode Q2 emitter stage is connected, the first voltage-regulator diode D1 and metal-oxide-semiconductor Q1 grid and sources connected in parallel；The protection electricity R3 and metal-oxide-semiconductor Q1 grid and sources connected in parallel is hindered, for preventing metal-oxide-semiconductor Q1 from puncturing, and fixed bias voltage is provided and ensures metal-oxide-semiconductor Q1 is effectively turned off；The negative pole of the second voltage-regulator diode D2 is connected with the output end of accessory power supply, positive pole passes through the 3rd divider resistance R5 is connected with triode Q2 base stage；The positive pole of the electric capacity C1 is connected with triode Q2 base stage, and negative pole is with triode Q2's Emitter stage is connected, and the colelctor electrode of the triode Q2 is connected with the first voltage-regulator diode D1 negative pole, emitter stage and the first voltage stabilizing Diode D1 positive pole is connected；The second divider resistance R4 is in parallel with electric capacity C1.
- 4. high-power corona discharge devices as claimed in claim 1, it is characterised in that the bleeder resistance is born with bus Extremely connected one end is also connected with the drain electrode of metal-oxide-semiconductor.
- 5. high-power corona discharge devices as claimed in claim 1, it is characterised in that also including fuse；It is described molten One end of disconnected device is connected with the bus positive pole of high-power power supply, and the other end is connected with the bleeder resistance, for circuit mistake Stream protection, the fuse use low current fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064765.1A CN107888062A (en) | 2017-11-02 | 2017-11-02 | A kind of high-power corona discharge devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711064765.1A CN107888062A (en) | 2017-11-02 | 2017-11-02 | A kind of high-power corona discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107888062A true CN107888062A (en) | 2018-04-06 |
Family
ID=61783627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711064765.1A Pending CN107888062A (en) | 2017-11-02 | 2017-11-02 | A kind of high-power corona discharge devices |
Country Status (1)
| Country | Link |
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| CN (1) | CN107888062A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109953012A (en) * | 2019-04-26 | 2019-07-02 | 汪庆 | The enclosed environments mouse killing cases such as a kind of warehouse, greenhouse |
| CN110224661A (en) * | 2019-06-04 | 2019-09-10 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor driven systems, motor, household electrical appliance |
| CN113964919A (en) * | 2021-11-18 | 2022-01-21 | 阳光电源股份有限公司 | Discharging circuit and discharging method of charging module |
| CN114337302A (en) * | 2021-12-30 | 2022-04-12 | 广东福德电子有限公司 | High-power sputtering power supply |
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| CN203313051U (en) * | 2013-07-04 | 2013-11-27 | 苏州工业园区华波电子科技有限公司 | Efficient release circuit structure |
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| CN202424502U (en) * | 2011-12-15 | 2012-09-05 | 宁波升谱光电半导体有限公司 | Switching power supply circuit |
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| CN109953012A (en) * | 2019-04-26 | 2019-07-02 | 汪庆 | The enclosed environments mouse killing cases such as a kind of warehouse, greenhouse |
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| CN114337302A (en) * | 2021-12-30 | 2022-04-12 | 广东福德电子有限公司 | High-power sputtering power supply |
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