CN104052310B - A kind of tandem ultra-low frequency high-pressure generator - Google Patents
A kind of tandem ultra-low frequency high-pressure generator Download PDFInfo
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- CN104052310B CN104052310B CN201410273544.5A CN201410273544A CN104052310B CN 104052310 B CN104052310 B CN 104052310B CN 201410273544 A CN201410273544 A CN 201410273544A CN 104052310 B CN104052310 B CN 104052310B
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Abstract
The invention belongs to electric device equipment technical field, disclose a kind of tandem ultra-low frequency high-pressure generator, including: power circuit, control unit, drive circuit, relay unit, the first high-pressure electronic switch, the first booster transformer, the second high-pressure electronic switch and the second booster transformer；The primary coil of the first booster transformer and the second booster transformer all connects power supply source by relay unit；First outfan of the secondary coil of the first booster transformer connects the second outfan of the second booster transformer secondary coil by the first high-pressure electronic switch, first outfan of the second booster transformer secondary coil connects load by the second high-pressure electronic switch, forms secondary transformer series boosting structure；Power circuit is connected with power supply source, changes power supply source；Control unit is connected with power circuit；Control unit is switched with relay unit, the first high-pressure electronic respectively by drive circuit and the control end of the second high-pressure electronic switch is connected, it is achieved action control.
Description
Technical field
The present invention relates to electric device equipment technical field, particularly to a kind of tandem ultra-low frequency high-pressure
Generator.
Background technology
High tension generator, also known as high voltage direct current generator, is the tradition address of high voltage power supply, refers to mainly use
High voltage power supply in insulation and detection of electrical leakage.In the market have two class ultra-low frequency high-pressure generators,
First kind ultra-low frequency high-pressure generator operation principle is mainly modulated by rotating a special rotation pressure regulator
Go out the amplitude-modulated wave that envelope is 0.1Hz, risen to required voltage by transformator, then by rectification silicon stack,
Mechanical switch, high pressure amplitude-modulated wave is demodulated the high-tension electricity of 0.1Hz by discharge resistance.The output of this series products
Wave distortion is big, equipment seriously generates heat when causing work, and security risk is increased sharply, so that can not work continuously.
Equations of The Second Kind ultra-low frequency high-pressure generator uses the light-operated high voltage switch unit of Single-chip Controlling, and discharge resistance is by height
Pressure amplitude-modulated wave demodulates the high-tension electricity of 0.1Hz, due to equipment security restriction, this kind of output of products 0.1Hz
The peak-peak voltage of high-tension electricity be only up to 50kV, output area is too small, it is impossible to be widely used；With
Time in view of equipment itself limit, when high voltage, control accuracy is the highest seriously constrains service precision.
Summary of the invention
The technical problem to be solved is to provide one and can promote safety coefficient, expand output
The ultra-low frequency high-pressure generator of scope.
For solving above-mentioned technical problem, the invention provides a kind of tandem ultra-low frequency high-pressure generator,
Including: power circuit, control unit, drive circuit, relay unit, the first high-pressure electronic switch,
First booster transformer, the second high-pressure electronic switch and the second booster transformer；Described first boosting
The primary coil of transformator and described second booster transformer all connects power supply by described relay unit
Source；First outfan of the secondary coil of described first booster transformer passes through described first high-pressure electronic
Switch connects the second outfan of described second booster transformer secondary coil, described second boosting transformation
First outfan of device secondary coil, by described second high-pressure electronic switch connection electric loading, is formed
Secondary transformer series boosting structure；Described power circuit is connected with power supply source, changes power supply source, for
Tandem ultra-low frequency high-pressure generator in-line power；Described control unit is connected with described power circuit；
Described control unit by described drive circuit respectively with described relay unit, described first high-tension electricity
The control end of son switch and described second high-pressure electronic switch is connected, it is achieved action control.
Further, described relay unit includes: solid-state relay；Described solid-state relay connects
Power supply source and described first booster transformer and described second booster transformer primary coil it
Between.
Further, described relay unit also includes: high power relay；Described high-power relay
Device and described solid-state relay are connected in power supply source and described first booster transformer and described second liter
Between the primary coil of pressure transformer.
Further, described first high-pressure electronic switch and described second high-pressure electronic switch are light-operated
IGBT high-pressure electronic switchs.
Further, also include: voltage x current sample circuit and A/D change-over circuit；Described voltage
Current sampling circuit respectively with described first booster transformer and the secondary of described second booster transformer
Coil is connected, sampled output current and voltage；The outfan of described voltage x current sample circuit passes through institute
State A/D change-over circuit to be connected with described control unit, form closed loop, it is achieved described first boosting
The output of transformator and described second booster transformer controls；Described A/D change-over circuit and described electricity
Source circuit is connected, and obtains electric energy supply.
Further, described voltage x current sample circuit includes: the first voltage x current sample circuit and
Two voltage x current sample circuits；The input of described first voltage x current sample circuit with described first liter
The secondary coil of pressure transformer is connected, and outfan is connected with described A/D change-over circuit；Described second electricity
The input of current voltage sample circuit is connected with the secondary coil of described second booster transformer, outfan
It is connected with described A/D change-over circuit.
Further, described first voltage x current sample circuit includes: divider resistance R1, divider resistance
R2 and current sampling resistor R3；Described divider resistance R1 and divider resistance R2 is connected in series in described
Between outfan and the ground of the first high-pressure electronic switch；The input of described divider resistance R1 connects described
The outfan of the first high-pressure electronic switch；The outfan of described divider resistance R1 connects described A/D conversion
Circuit；It is second defeated that described current sampling resistor R3 is connected to described first booster transformer secondary coil
Go out between end and ground；Described current sampling resistor R3 input is connected with described A/D change-over circuit.
Further, described second voltage x current sample circuit includes: divider resistance R4, divider resistance
R5 and current sampling resistor R6；Described divider resistance R4 and divider resistance R5 is connected in series in described
Between outfan and the ground of the second high-pressure electronic switch；The input of described divider resistance R4 connects described
The outfan of the second high-pressure electronic switch；The outfan of described divider resistance R4 connects described A/D conversion
Circuit；It is second defeated that described current sampling resistor R6 is connected to described first booster transformer secondary coil
Go out between end and ground；Described current sampling resistor R6 input is connected with described A/D change-over circuit.
Further, tandem ultra-low frequency high-pressure generator also includes: touch screen and printer；Described
Touch screen is connected with described control unit with described printer.
Further, tandem ultra-low frequency high-pressure generator also includes: wireless communication module；Described nothing
Line communication module is connected with described control unit, it is achieved control unit and the transmission of extraneous data.
The tandem ultra-low frequency high-pressure generator that the present invention provides is by the side of two booster transformer series connection
Formula, expands the voltage range of entirety output；Meanwhile, in view of High voltage output, use two-stage series connection output,
The power density making output loop reduces, thus reduces output loop and the overheated probability burnt occurs,
Thus improve safety on the whole.
Accompanying drawing explanation
The structural representation of the tandem 80KV ultra-low frequency high-pressure generator that Fig. 1 provides for the embodiment of the present invention
Figure.
Detailed description of the invention
The present invention provides a kind of tandem ultra-low frequency high-pressure generator, now sends out with the ultra-low frequency high-pressure of 80KV
As a example by raw device, this programme is described.
See Fig. 1, a kind of tandem 80KV ultra-low frequency high-pressure generator that the present invention provides, including: electricity
Source circuit, control unit, drive circuit, relay unit, first high-pressure electronic switch, first liter
Pressure transformer, the second high-pressure electronic switch and the second booster transformer；First booster transformer and
The primary coil of two booster transformers all connects power supply source by relay unit, forms power supply circuits,
And the high pressure break-make control of high safety factor is realized by relay；The secondary wire of the first booster transformer
First outfan a of circle1The second booster transformer secondary coil is connected by the first high-pressure electronic switch
Second outfan b2, the first outfan a of the second booster transformer secondary coil2By the second high-tension electricity
Son switch connection electric loading, is formed secondary transformer series boosting structure, is boosted transformation by two-stage
Device, expands the scope of output voltage on the whole, also reduces the power density of output loop, phase simultaneously
For voltage output in the range of single booster transformer carrying gamut, two-stage series connection exports, it is possible to root
According to being actually needed the output voltage of each booster transformer of flexible allocation, so that two boosting transformations
Device can more be in optimized output area, it is to avoid High voltage output or low pressure output all the time
The device caused is overheated, and security risk increases or electricity damages excessive；Power circuit is connected with power supply source,
Conversion power supply source, step-down rectifier, for tandem ultra-low frequency high-pressure generator in-line power；Control unit
It is connected with power circuit, obtains the low-voltage DC needed for operating；Control unit is divided by drive circuit
The not control end with relay unit, the first high-pressure electronic switch and the second high-pressure electronic switch is connected,
Realize action control, adjust output voltage.
In the present embodiment, the first high-pressure electronic switch uses 30KV high-pressure electronic switch, first liter of buckling
Depressor uses 30KV booster transformer；Second high-pressure electronic switch employing 50KV high-pressure electronic switch,
Second booster transformer uses 50KV booster transformer；Guarantee that output voltage extreme value is 80KV.Also may be used
To select the first booster transformer and second booster transformer of different threshold value according to actual needs, by two
Person connects, thus reaches series connection and expand the purpose of output area；Pressure performance district in view of all kinds of devices
Not, the threshold range of the first booster transformer and the second booster transformer avoids excessive difference, it is to avoid
Output loop is overheated.
In the present embodiment, control unit uses Single Chip Microcomputer (SCM) system；In actual application, it would however also be possible to employ note
Enter the other kinds of controllers such as PLC.
The access of relay unit security control power supply source under high pressure conditions and shutoff, including: Gu
State relay；Solid-state relay is connected to power supply source and the first booster transformer and the second boosting transformation
Between the primary coil of device.In view of solid-state relay is the contactless electronic beam switch with isolation features,
Mechanical contact component in switching process, therefore solid-state relay is except having as electromagnetic relay
Function outside, also there is logic circuit compatible, resistance to mechanical resistant impact of shaking, installation site is unrestricted, tool
There is good moistureproof and mildewproof Corrosion Protection, explosion-proof and prevent the performance in terms of ozone pollution the most splendid,
Input power is little, highly sensitive, controls power little, and Electro Magnetic Compatibility is good, and noise is low and operating frequency
High advantage.
In view of, under environment under high pressure, the security performance of device requires the strictest, it is preferred that relay unit
Also include: high power relay；High power relay and solid-state relay are connected in power supply source and first
Between the primary coil of booster transformer and the second booster transformer；Form the two-stage switch of series connection,
The reliability of lifting switch, reduces security risk.
First high-pressure electronic switch and the second high-pressure electronic switch are light-operated IGBT high-pressure electronic switch.
Use light-operated IGBT high-pressure electronic switch to substitute traditional mechanical switch and can realize the two-way exchange of energy,
Equipment is not generated heat, length in service life can working continuously.
In view of, the risk of High voltage output is the highest, because the control of its precision also should possess the highest ability；
Preferably, present invention additionally comprises: voltage x current sample circuit and A/D change-over circuit；Voltage x current
Sample circuit secondary coil with the first booster transformer and the second booster transformer respectively is connected, and adopts
Sample output electric current and voltage；The outfan of voltage x current sample circuit passes through A/D change-over circuit and control
Unit is connected, and forms closed loop, it is achieved described first booster transformer and the second booster transformer
Output control；Thus improve output control accuracy by the feedback control of intelligence, reduce load
Impact, promotes load operation precision and safety.
A/D change-over circuit is connected with power circuit, obtains regulated power supply.
Voltage x current sample circuit includes: the first voltage x current sample circuit and the sampling of the second voltage x current
Circuit；The input of the first voltage x current sample circuit and the secondary coil of the first booster transformer are connected,
Outfan is connected with A/D change-over circuit；The input of the second voltage x current sample circuit and the second boosting
The secondary coil of transformator is connected, and outfan is connected with described A/D change-over circuit.Use separate to adopt
Sample circuit, samples respectively for two-stage booster transformer, greatly reduces the phase of two-stage transformer sampling
Interference mutually, promotes sampling precision, and then the feedback control precision of lifting device pair
First voltage x current sample circuit includes: divider resistance R1, divider resistance R2 and current sample
Resistance R3；Divider resistance R1 and divider resistance R2 is connected in series in the outfan of the first high-pressure electronic switch
And between ground；The input of divider resistance R1 connects the outfan of the first high-pressure electronic switch；Dividing potential drop electricity
The outfan of resistance R1 connects A/D change-over circuit；Thus the voltage signal of safety is gathered by divider resistance,
By the resistance R1 of high value so that voltage signal sampling value is in low pressure small magnitude state, it is simple to enter
Row analog digital conversion utilizes；Current sampling resistor R3 is connected to the second of the first booster transformer secondary coil
Outfan b1And between ground；Current sampling resistor R3 input is connected with A/D change-over circuit；By dividing
Leakage resistance R3 adjusts the output electric current flowing into A/D change-over circuit, it is achieved the low sample circuit knot forcing down stream
Structure, is greatly improved capacity of resisting disturbance and the safety of circuit.
Second voltage x current sample circuit includes: divider resistance R4, divider resistance R5 and current sample
Resistance R6；Divider resistance R4 and divider resistance R5 is connected in series in the outfan of the second high-pressure electronic switch
And between ground；The input of divider resistance R4 connects the outfan of the second high-pressure electronic switch；Dividing potential drop electricity
The outfan of resistance R4 connects A/D change-over circuit；Thus the voltage signal of safety is gathered by divider resistance,
By the resistance R4 of high value so that voltage signal sampling value is in low pressure small magnitude state, it is simple to enter
Row analog digital conversion utilizes；Current sampling resistor R6 is connected to the second of the second booster transformer secondary coil
Outfan b2And between ground；Current sampling resistor R6 input is connected with A/D change-over circuit；By dividing
Leakage resistance R6 adjusts the output electric current flowing into A/D change-over circuit, it is achieved the low sample circuit knot forcing down stream
Structure, is greatly improved capacity of resisting disturbance and the safety of circuit.
In order to realize human-computer interaction easily, it is preferred that the embodiment of the present invention also includes: touch screen and
Printer；Touch screen is connected with control unit with printer.The acquisition being easy to real time data shows, with
And artificial regulatory.
The present embodiment also includes: wireless communication module；Wireless communication module is connected with control unit, real
Existing control unit and the transmission of extraneous data.
The embodiment of the present invention uses the tandem ultra-low frequency high-pressure generator of capacitance touch screen, uses ARM7
Control unit, by drive circuit simultaneously to a light-operated IGBT high-pressure electronic switch and light-operated second
IGBT high-pressure electronic switch is simultaneously emitted by control signal, thus the 2nd IGBT high-pressure electronic switch exports
By the pulse voltage that peak value is 80kV that sinusoidal regular frequency is 0.1Hz.By the first divider resistance high pressure
Arm R1, the first divider resistance low-voltage arm R2, the first current sampling resistor R3, the second divider resistance are high
Pressure arm R4, the second divider resistance low-voltage arm R5, the second respective outfan of current sampling resistor R6 are equal
Read the voltage and current value of output by modulus A/D change-over circuit, finally by capacitance touch screen and
Printer output result.
The controller part of this instrument is mainly made up of the electronic unit with ARM7 single-chip microcomputer as core, its
Instead of the control that in original like product, the first kind forms for core with pressure regulator, rotation pressure regulator
Device；Instead of the controller formed for core in like product with 51 series monolithics.Use capacitive touch
It is 0.1Hz's that the method for the tandem ultra-low frequency high-pressure generator available programs control touching screen produces envelope
Amplitude-modulated wave, by controlling the pulsewidth of carrier wave, reaches to regulate the purpose of output voltage；Use two grades of transformations
Device series boosting, improves the grade of output voltage, also makes production technology be greatly simplified, output wave
The shape distortion factor is little.All control operations all can have been clicked on hands on capacitance touch screen, is not required to
Want button.Support radio communication, it is achieved controlled by backstage radio communication；Use solid-state relay and
High power relay series connection controls booster electric power loop, improves product protection action power dump and returns
The reliability on road.The present embodiment uses light-operated IGBT high-pressure electronic switch to substitute traditional mechanical switch can
Realize the two-way exchange of energy so that equipment does not generates heat, length in service life can working continuously.
First divider resistance high-voltage arm R1 is 3000M Ω, the first divider resistance low-voltage arm R2 is 3k Ω,
First current sampling resistor R3 is 333 Ω, the second divider resistance high-voltage arm R4 be 5000M Ω, second
Divider resistance low-voltage arm R5 is 5k Ω, the second current sampling resistor R6 is 333 Ω；Thus ensure to adopt
The low-voltage safety of sample current and voltage signals.
The tandem ultra-low frequency high-pressure generator that the present invention provides is by the side of two booster transformer series connection
Formula, expands the voltage range of entirety output；Meanwhile, in view of High voltage output degree exports, two-stage string is used
Connection output so that the power density of output loop reduces, thus reduce output loop and overheated burning occurs
Probability, thus improve safety on the whole.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme
And unrestricted, although the present invention being described in detail with reference to example, the ordinary skill people of this area
Member should be appreciated that and can modify technical scheme or equivalent, without deviating from
The spirit and scope of technical solution of the present invention, it all should be contained in the middle of scope of the presently claimed invention.
Claims (6)
1. a tandem ultra-low frequency high-pressure generator, it is characterised in that including: power circuit, control
Unit processed, drive circuit, relay unit, the first high-pressure electronic switch, the first booster transformer,
Second high-pressure electronic switch and the second booster transformer；
The primary coil of described first booster transformer and described second booster transformer continues described in all passing through
Electric appliance unit connects power supply source；
First outfan of the secondary coil of described first booster transformer passes through described first high-pressure electronic
Switch connects the second outfan of described second booster transformer secondary coil, described second boosting transformation
First outfan of device secondary coil, by described second high-pressure electronic switch connection electric loading, is formed
Secondary transformer series boosting structure；
Described power circuit is connected with described power supply source, changes power supply source and sends out into tandem ultra-low frequency high-pressure
Raw device in-line power；Described control unit is connected with described power circuit；Described control unit passes through institute
State drive circuit respectively with described relay unit, described first high-pressure electronic switch and described second
The control end of high-pressure electronic switch is connected, it is achieved action control；
Wherein, also include: voltage x current sample circuit and A/D change-over circuit；Described voltage x current
Sample circuit respectively with described first booster transformer and the secondary coil of described second booster transformer
It is connected, sampled output current and voltage；The outfan of described voltage x current sample circuit passes through described A/D
Change-over circuit is connected with described control unit, forms closed loop, it is achieved described first booster transformer
And the output of described second booster transformer controls；Described A/D change-over circuit and described power circuit
It is connected, obtains electric energy supply；
Described voltage x current sample circuit includes: the first voltage x current sample circuit and the second voltage x current
Sample circuit；The input of described first voltage x current sample circuit and described first booster transformer
Secondary coil is connected, and outfan is connected with described A/D change-over circuit；Described second voltage x current sampling
The input of circuit is connected with the secondary coil of described second booster transformer, outfan and described A/D
Change-over circuit is connected；Described first voltage x current sample circuit includes: divider resistance R1, divider resistance
R2 and current sampling resistor R3；Described divider resistance R1 and divider resistance R2 is connected in series in institute
State between outfan and the ground of the first high-pressure electronic switch；The input of described divider resistance R1 connects
The outfan of described first high-pressure electronic switch；The outfan of described divider resistance R1 connects described A/D
Change-over circuit；Described current sampling resistor R3 is connected to described first booster transformer secondary coil
Between second outfan and ground；Described current sampling resistor R3 input and described A/D change-over circuit
It is connected；
Described second voltage x current sample circuit includes: divider resistance R4, divider resistance R5 and electricity
Stream sampling resistor R6；It is high that described divider resistance R4 and divider resistance R5 is connected in series in described second
Between outfan and the ground of pressure electrical switch；The input of described divider resistance R4 connects described second
The outfan of high-pressure electronic switch；The outfan of described divider resistance R4 connects described A/D conversion electricity
Road；It is second defeated that described current sampling resistor R6 is connected to described second booster transformer secondary coil
Go out between end and ground；Described current sampling resistor R6 input is connected with described A/D change-over circuit.
2. tandem ultra-low frequency high-pressure generator as claimed in claim 1, it is characterised in that described
Relay unit includes: solid-state relay；Power supply source by described solid-state relay respectively with described the
The primary coil of one booster transformer and described second booster transformer is connected.
3. tandem ultra-low frequency high-pressure generator as claimed in claim 2, it is characterised in that described
Relay unit also includes: high power relay；Described high power relay is by described solid-state relay
Device primary coil with described first booster transformer and described second booster transformer respectively is connected.
4. tandem ultra-low frequency high-pressure generator as claimed in claim 3, it is characterised in that: described
First high-pressure electronic switch and described second high-pressure electronic switch are light-operated IGBT high-pressure electronic and open
Close.
5. the tandem ultra-low frequency high-pressure generator as described in any one of Claims 1 to 4, its feature
It is, also includes: touch screen and printer；Described touch screen and described printer control list with described
Unit is connected.
6. tandem ultra-low frequency high-pressure generator as claimed in claim 5, it is characterised in that also wrap
Include: wireless communication module；Described wireless communication module is connected with described control unit, it is achieved control single
Unit and the transmission of extraneous data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410273544.5A CN104052310B (en) | 2014-06-18 | 2014-06-18 | A kind of tandem ultra-low frequency high-pressure generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410273544.5A CN104052310B (en) | 2014-06-18 | 2014-06-18 | A kind of tandem ultra-low frequency high-pressure generator |
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| CN104052310A CN104052310A (en) | 2014-09-17 |
| CN104052310B true CN104052310B (en) | 2016-10-26 |
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| CN105425080B (en) * | 2015-12-17 | 2019-07-26 | 重庆五福科技有限公司 | A kind of logical machine pressure regulator test device |
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|---|---|---|---|---|
| CN2397673Y (en) * | 1999-09-25 | 2000-09-20 | 孟翔 | Ultra-low frequency generator |
| US6169406B1 (en) * | 1998-05-02 | 2001-01-02 | Stanley G. Peschel | Very low frequency high voltage sinusoidal electrical testing method, systems and apparatus |
| CN101349727A (en) * | 2007-09-29 | 2009-01-21 | 罗炎平 | Ultra-low frequency high-pressure generator |
| CN102412739A (en) * | 2011-12-08 | 2012-04-11 | 大连理工大学 | Ultra low frequency high-voltage power supply |
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2014
- 2014-06-18 CN CN201410273544.5A patent/CN104052310B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6169406B1 (en) * | 1998-05-02 | 2001-01-02 | Stanley G. Peschel | Very low frequency high voltage sinusoidal electrical testing method, systems and apparatus |
| CN2397673Y (en) * | 1999-09-25 | 2000-09-20 | 孟翔 | Ultra-low frequency generator |
| CN101349727A (en) * | 2007-09-29 | 2009-01-21 | 罗炎平 | Ultra-low frequency high-pressure generator |
| CN102412739A (en) * | 2011-12-08 | 2012-04-11 | 大连理工大学 | Ultra low frequency high-voltage power supply |
Non-Patent Citations (1)
| Title |
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| 电缆检测用高压发生器的拓扑及控制策略研究;刘志刚;《中国优秀博士学位论文全文数据库，工程科技Ⅱ辑》;20140515;正文第8页最后一段及图1.6 * |
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