CN104333260B - Short time-delay high steepness pulse amplifier - Google Patents
Short time-delay high steepness pulse amplifier Download PDFInfo
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- CN104333260B CN104333260B CN201410667972.6A CN201410667972A CN104333260B CN 104333260 B CN104333260 B CN 104333260B CN 201410667972 A CN201410667972 A CN 201410667972A CN 104333260 B CN104333260 B CN 104333260B
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Abstract
A kind of short time-delay high steepness pulse amplifier, it is made up of isolating transformer, rectification circuit, accumulator, impulse output circuit, thyristor control circuit, isolating transformer connects power frequency AC, isolation transformation is followed by rectification circuit, output one tunnel of rectification circuit connects accumulator, and another road connects thyristor control circuit.The output termination impulse output circuit of accumulator, the thyristor control end in the output termination impulse output circuit of thyristor control circuit.IGCT, as the switch of capacitor discharge, utilizes electric capacity to spark generation steep-sided pulse, and the output pulse producing short time-delay high steepness is amplified in this pulse through pulse transformer.Reduce the voltage after leakage inductance and the distribution capacity of pulse transformer, or raising rectifier circuit rectifies by reducing the umber of turn of pulse transformer and improve the voltage at charging capacitor two ends in accumulator, increase the steepness of pulse amplifier output pulse.
Description
Technical field
The invention belongs to high-voltage test techniques field, particularly relate to a kind of short time-delay high steepness pulse amplifier.
Background technology
For detecting the insulating properties of power system high voltage electric equipment, need that high voltage electric equipment is simulated thunder and lightning the most electric
Pressure and the impulse voltage test of switching overvoltage, wherein it is frequently necessary to use pulse amplifier.For obtaining the pulse of high steepness,
The pulse produced need to be carried out steepness, this cost that can increase amplifier and volume.For improving the effect of pulse amplifier,
The present invention proposes a kind of amplifier producing short time-delay high steepness pulse.
Summary of the invention
The present invention is for overcoming above-mentioned the deficiencies in the prior art, it is proposed that a kind of short time-delay high steepness pulse amplifier, it is possible to produce
The pulse of raw short time-delay high steepness.
The technical solution of the present invention is as follows:
A kind of short time-delay high steepness pulse amplifier, its feature is, including isolating transformer, rectification circuit, energy storage
Circuit, impulse output circuit and thyristor control circuit；The input termination power frequency AC of described isolating transformer,
The input of the rectification circuit described in output termination, the input of the first output termination accumulator of this rectification circuit, the
The input of two output termination thyristor control circuits, the input of the output termination impulse output circuit of this accumulator,
The thyristor control end of the output termination impulse output circuit of thyristor control circuit.Described isolating transformer GB is followed by
Rectification circuit, one end ground connection of outfan.
Described rectification circuit includes the first resistance, the first electric capacity, the second resistance, the second electric capacity, the first diode and
Two diodes；The first described resistance and one end of the first electric capacity are connected with the outlet terminal of described isolating transformer
Connecing, the other end is connected with the negative pole of the first described diode and the positive pole of the second diode respectively；The second described resistance
It is connected with the output earth terminal of described isolating transformer with one end of the second electric capacity, the other end and the two or two described pole
The negative pole of pipe is connected；The positive pole of the first described diode is connected with the output earth terminal of described isolating transformer.
Described accumulator includes the 4th resistance, the 4th electric capacity and the 5th resistance；The 4th described electric capacity and the 5th resistance
One end be connected with one end of the 4th described resistance, other end ground connection, the other end of the 4th described resistance with described
The negative pole of the second diode is connected.
Described impulse output circuit includes fly-wheel diode, IGCT and pulse transformer；Described pulse transformer
High pressure connection one end with the negative pole of described fly-wheel diode and the 4th described resistance respectively in former limit is connected, former limit low pressure
Joint is connected with the positive pole of described fly-wheel diode and the anode of IGCT respectively, the minus earth of described IGCT；
The output of the most described short time delay high steepness pulse amplifier of output of pulse transformer.
Described thyristor control circuit includes the 3rd resistance, the 3rd electric capacity, Transient Suppression Diode, the 6th resistance and opens
Close；One end of the 3rd described resistance is connected with the outfan of rectification circuit, the other end respectively with the 6th described resistance,
3rd electric capacity is connected with one end of Transient Suppression Diode, another termination of the 3rd described electric capacity and Transient Suppression Diode
Ground, the other end of the 6th described resistance is connected with the gate pole of described IGCT through described switch；Transient state suppresses two poles
The voltage at pipe two ends is in series the gate pole of the thyratron transistor being followed by impulse output circuit through the 6th resistance and switch,
Control the conducting of IGCT.
Compared with prior art, the invention has the beneficial effects as follows:
(1) utilizing electric capacity to spark generation steep-sided pulse, this pulse amplifies through pulse transformer that to produce short time-delay high
The output pulse of steepness.
(2) leakage inductance and the distribution capacity of pulse transformer is reduced by reducing the umber of turn of pulse transformer,
Or the voltage after raising rectifier circuit rectifies improves the voltage at charging capacitor two ends in accumulator, increase pulse amplifying
The steepness of device output pulse.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the present invention
Fig. 2 is the way circuit figure of the present invention
Fig. 3 is the circuit diagram of the pulse amplifying of the present invention
Fig. 4 is the equivalent circuit diagram of pulse amplifying circuit in the present invention
Detailed description of the invention
Below embodiments of the invention are elaborated.
As it is shown in figure 1, the short time-delay high steepness pulse amplifier of the present invention by isolating transformer GB, rectification circuit 2,
Accumulator 3, impulse output circuit 4 and thyristor control circuit 5 form.
As in figure 2 it is shown, isolating transformer GB connects power frequency AC, isolation transformation is followed by rectification circuit, rectification circuit
Output one tunnel connect accumulator, another road connects thyristor control circuit.The output termination impulse output circuit of accumulator,
Gate circuit transistor gate in the output termination impulse output circuit of thyristor control circuit.
Described isolating transformer GB is followed by rectification circuit, one end ground connection of outfan.
Described rectification circuit is by the first resistance R1, the first electric capacity C1, the second resistance R2, the second electric capacity C2, first
Diode D1 and the second diode D2 composition.First resistance R1 and the first electric capacity C1 is in parallel, and a termination isolation becomes
One end of depressor GB output, another negative pole terminating the first diode D1 and the positive pole of the second diode D2.Second
Resistance R2 and the second electric capacity C2 is in parallel, the other end of a termination isolating transformer GB output, another termination the two or two
The negative pole of pole pipe D2.
Described accumulator is made up of the 4th resistance R4, the 4th electric capacity C4 and the 5th resistance R5.4th electric capacity C4
The outfan of rectification circuit, other end ground connection is connect with one end the 4th resistance R4 after the 5th resistance R5 parallel connection.
Described impulse output circuit is made up of sustained diode 3, IGCT SCR and pulse transformer MB.Pulse
The former limit of transformator MB is connected in parallel on the outfan of accumulator with IGCT SCR after connecting, pulse transformer MB's
Former limit is parallel with sustained diode 3.The most described short time delay high steepness pulse amplifier of output of pulse transformer MB
Output.
Described thyristor control circuit by the 3rd resistance R3, the 3rd electric capacity C3, Transient Suppression Diode TVS, the 6th
Resistance R6 and switch K composition.After 3rd resistance R3 series connection Transient Suppression Diode TVS, one end is connected in parallel on rectification circuit
Outfan, other end ground connection.Transient Suppression Diode TVS two ends parallel connection plays the 3rd electric capacity C3 of pressure stabilization function.Wink
The voltage at state suppression diode TVS two ends is in series is followed by impulse output circuit through the 6th resistance R6 and switch K
The gate pole of IGCT SCR, control the conducting of IGCT.
As it is shown on figure 3, be the output pulse producing amplitude 30kV, from 220V power frequency AC after isolation transformation
It is rectified into 600V DC voltage, to the 4th electric capacity C4 charging in accumulator, then by the 4th electric capacity C4 through brilliant lock
The pulse that the electric discharge that pipe SCR controls produces is amplified through the pulse transformer of 1:50, finally gives the arteries and veins of amplitude 30kV
Punching.
The equivalent circuit of the pulse amplifying circuit being illustrated in figure 4 in the present invention, increase electric capacity C1 two ends voltage or
Reduce leakage inductance L of pulse transformerkWith distribution capacity CBImprove the steepness of pulse, reduce the time delay that pulse generates simultaneously.
The present invention uses IGCT as the discharge switch of the 4th electric capacity C4, utilizes the 4th electric capacity C4 to spark generation
Pulse amplify output through pulse transformer and realize the pulse amplifying of short time-delay high steepness.
Claims (1)
1. a short time-delay high steepness pulse amplifier, it is characterised in that include isolating transformer (GB), rectified current
Road (2), accumulator (3), impulse output circuit (4) and thyristor control circuit (5)；Described isolation transformation
The input termination power frequency AC of device, the input of the rectification circuit described in output termination, the first of this rectification circuit is defeated
Go out to terminate the input of accumulator, the input of the second output termination thyristor control circuit, the output of this accumulator
The input of termination impulse output circuit, the door of the IGCT of the output termination impulse output circuit of thyristor control circuit
Pole；
Described rectification circuit (2) include the first resistance (R1), the first electric capacity (C1), the second resistance (R2),
Two electric capacity (C2), the first diode (D1) and the second diode (D2)；The first described resistance and the first electric capacity
One end is connected with the outlet terminal of described isolating transformer, the other end respectively with the negative pole of the first described diode
It is connected with the positive pole of the second diode；The second described resistance and one end of the second electric capacity are defeated with described isolating transformer
Going out earth terminal to be connected, the other end is connected with the negative pole of the second described diode；The positive pole of the first described diode with
The output earth terminal of described isolating transformer is connected；
Described accumulator (3) includes the 4th resistance (R4), the 4th electric capacity (C4) and the 5th resistance (R5)；Institute
The 4th electric capacity and one end of the 5th resistance of stating are connected with one end of the 4th described resistance, other end ground connection, described
The other end of four resistance is connected with the negative pole of the second described diode；
Described impulse output circuit (4) includes fly-wheel diode (D3), IGCT (SCR) and pulse transformer (MB)；
The former limit high pressure connection of described pulse transformer respectively with the negative pole and the described the 4th of described fly-wheel diode (D3)
One end of resistance is connected, the low-pressure connector of former limit respectively with positive pole and the IGCT (SCR) of described fly-wheel diode (D3)
Anode connect, the minus earth of described IGCT (SCR)；
Described thyristor control circuit (5) includes that the 3rd resistance (R3), the 3rd electric capacity (C3), transient state suppress two poles
Pipe (TVS), the 6th resistance (R6) and switch (K)；One end of the 3rd described resistance and the outfan of rectification circuit
Being connected, other end one end with described the 6th resistance, the 3rd electric capacity and Transient Suppression Diode respectively is connected, described
3rd electric capacity and the other end ground connection of Transient Suppression Diode, the other end of the 6th described resistance is through described switch (K)
It is connected with the gate pole of described IGCT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667972.6A CN104333260B (en) | 2014-11-20 | 2014-11-20 | Short time-delay high steepness pulse amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667972.6A CN104333260B (en) | 2014-11-20 | 2014-11-20 | Short time-delay high steepness pulse amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104333260A CN104333260A (en) | 2015-02-04 |
| CN104333260B true CN104333260B (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410667972.6A Expired - Fee Related CN104333260B (en) | 2014-11-20 | 2014-11-20 | Short time-delay high steepness pulse amplifier |
Country Status (1)
| Country | Link |
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| CN (1) | CN104333260B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113224930A (en) * | 2021-05-31 | 2021-08-06 | 湖南科瑞变流电气股份有限公司 | Optical pulse power amplifier isolation circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490662B (en) * | 2013-10-09 | 2016-03-02 | 桂林理工大学 | High-isolation high-voltage pulse power source |
| CN103701357B (en) * | 2013-11-27 | 2017-02-08 | 西安理工大学 | Digital variable frequency defibrillator and variable frequency pulse control method thereof |
| CN204190644U (en) * | 2014-11-20 | 2015-03-04 | 上海交通大学 | A kind of short time delay high steepness pulse amplifying circuit |
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- 2014-11-20 CN CN201410667972.6A patent/CN104333260B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN104333260A (en) | 2015-02-04 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20191120 |