CN102244471A - Power output circuit of electron gun - Google Patents
Power output circuit of electron gun Download PDFInfo
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- CN102244471A CN102244471A CN2011102047865A CN201110204786A CN102244471A CN 102244471 A CN102244471 A CN 102244471A CN 2011102047865 A CN2011102047865 A CN 2011102047865A CN 201110204786 A CN201110204786 A CN 201110204786A CN 102244471 A CN102244471 A CN 102244471A
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Abstract
The invention discloses a power output circuit of an electron gun, comprising a primary three-phase winding of a main loop step-up transformer and a multi-level main output circuit which is formed by a plurality of single-level output circuits, wherein each single-level output circuit is formed by a secondary winding of a single-level module transformer, a single-level module rectification filter circuit, a single-level module DC (direct-current) output switch, a control protection circuit and a single-level module DC output circuit. The power output circuit of the electron gun responds the time delay quickly, so that current overshoot of the electron gun is reduced in a short-circuit protection state greatly, thus the interference of the running of the electron gun on the running of a power grid and other equipment is reduced greatly. A control circuit can realize multi-level (36 levels) superposition conduction level by level and simultaneous multi-level conduction, thus reaching high-voltage recovery at the fastest speed. A DC voltage at each level reaches 1000V.
Description
Technical field
Patent of the present invention belongs to a kind of power output circuit, is specifically related to the electron gun power output circuit of a kind of interchange classification by output voltage, classification rectification, the serial connection stack output of dc switch pipe classification output back.
Background technology
Electron gun is a kind of being operated under the vacuum state, by quickening the device that high pressure quickens to draw to electron cloud.Be widely used in the smelting and the evaporation of insoluble metal, be accompanied by the melting evaporation of electron beam to metal material, ionized gas or impurity powder dust particle discharge short between high-field electrode and electronegative potential will inevitably frequently take place, moment punctures over the ground to cause high pressure.As untimely this short circuit overshoot is suppressed protection, the huge energy release meeting of generation causes severe impact even damage to electron gun system and peripheral associated production equipment.This has just proposed specific requirement to the protection and the recovery characteristics of electron gun power supply.
In conventional controllable silicon electron gun power supply, the electron gun protective circuit is blocked SCR trigger pulse when short circuit current being judged fast, protect fast, thereby reaches the purpose of sealing output.After blocking the protection releasing, SCR trigger pulse is recovered.But must set the time of integration, recover too fast meeting and cause the overshoot overshoot.
In conventional controllable silicon electron gun power circuit; realize that by turn-offing controllable silicon protection is feasible through checking; but because controllable silicon belongs to the zero-crossing switching device; in case even the controllable silicon conducting loses trigger impulse in exchanging the homophase half-wave; controllable silicon is kept conducting before zero passage; this can cause behind output short-circuit, after protective circuit is successfully judged and is provided actuating signal simultaneously, controllable silicon implement the protectiveness envelope disconnected before existence less than the risk out of control of half cycle (10mS).In this section out-of-control time,, can cause serious current over pulse if suppress current over pulse current design surplus deficiency, electrical network is caused very large disturbance, and to electric equipment on every side normal operation brings very big influence, can cause system cut-off because overcurrent causes tripping operation when serious.
In conventional controllable silicon electron gun power circuit; blocking and realizing recovering high direct voltage by the recovery SCR trigger pulse after protection is removed is feasible through checking; but owing to must set the time of integration; so the time that high pressure rebulids must be a second unit interval magnitude, this keeps the operating state of continous-stable for electron gun is disadvantageous.
Summary of the invention
The present invention proposes for the shortcoming that overcomes the prior art existence, and its objective is provides a kind of electron gun power output circuit.
Technical scheme of the present invention is: a kind of electron gun power output circuit comprises elementary three phase windings of major loop step-up transformer and multistage total output circuit of being made up of a plurality of single-stage output circuits.
Each single-stage output circuit is made up of single-stage module transformer secondary output winding, single-stage module current rectifying and wave filtering circuit, single-stage module direct current output switch, control protection electric circuit and single-stage module dc output circuit.The output of single-stage module transformer secondary output winding is communicated with the input of single-stage module current rectifying and wave filtering circuit; the output of single-stage module current rectifying and wave filtering circuit is communicated with the input of single-stage module direct current output switch; the output of single-stage module direct current output switch is communicated with the input of single-stage module dc output circuit; single-stage module direct current output switch is provided with control protection electric circuit, direct current output switch 2
.3 drive signal is imported through the port II by governor circuit.
Described direct current output switch is made of an insulated gate bipolar transistor IGBT Q1, triode Q1.
Described dc output circuit is made up of bypass diode D17, D18, grading resistor R15～R18, current-sharing capacitor C 26, C27.
Beneficial effect of the present invention:
The present invention is when the overcurrent protection of electron gun power supply; provide the reaction time-delay of protecting actuating signal to export ending from protective circuit and 10 μ S are only arranged through measuring to high pressure; only be far smaller than by controllable silicon end to come protective circuit inevitably less than the protection blind area of 10mS; thereby reduced the current over pulse of electron gun when short-circuit protection greatly, the operation that makes electron gun greatly reduces the interference of electrical network and other equipment operations.It is 50mS that overcurrent protection release high direct voltage of the present invention returns to bit time the soonest; be far smaller than a second unit interval magnitude level; and conducting step by step superposes both can to have realized multistage (can reach 36 grades) by control circuit; also can realize multistage while conducting; realize that with prestissimo high pressure recovers, the direct voltage of each grade can reach 1000V.
Description of drawings
Fig. 1 is the theory diagram of electron gun power output circuit of the present invention;
Fig. 2 is the winding diagram of single-stage power supply output circuit of the present invention.
Wherein:
1 elementary three phase windings, 2 multistage total output circuits
3 single-stage output circuits, 3.1 transformer secondary output windings
3.2 current rectifying and wave filtering circuit 3.3 direct currents output switch
3.4 control protection electric circuit 3.5 dc output circuits
4 positive source outputs, 5 connecting lines
6 power cathode outputs.
Embodiment
Below, with reference to drawings and Examples electron gun power output circuit of the present invention is elaborated:
As shown in Figure 1, a kind of electron gun power output circuit comprises elementary three phase windings 1 of major loop step-up transformer and multistage total output circuit 2 of being made up of a plurality of single-stage output circuits 3.Each single-stage output circuit 3 is made up of single-stage module transformer secondary output winding 3.1, single-stage module current rectifying and wave filtering circuit 3.2, single-stage module direct current output switch 3.3, control protection electric circuit 3.4 and single-stage module dc output circuit 3.5.
Elementary three phase windings 1 of single-stage module step-up transformer can adopt Y type or Δ connection.Single-stage module transformer secondary output winding 3.1 can adopt Y type or Δ connection; its output is communicated with the input of single-stage module current rectifying and wave filtering circuit 3.2; the output of single-stage module current rectifying and wave filtering circuit 3.2 is communicated with the input of single-stage module direct current output switch 3.3; the output of single-stage module direct current output switch 3.3 is communicated with the input of single-stage module dc output circuit 3.5, and single-stage module direct current output switch 3.3 is provided with control protection electric circuit 3.4.
Wherein, label 4 is the positive source output, and label 5 is the connecting line between each single-stage output, and label 6 is the power cathode output, and 4 are connected power source loads with 6.
As shown in Figure 2, the single-stage module Secondary winding of transformer 3
.1 is made of three single-stage winding Ta, Tb, Tc, and transformer secondary output winding 3.1 output three-phase alternating currents offer the current rectifying and wave filtering circuit 3 of single-stage module
.2 carry out rectifying and wave-filtering handles.The rectifying part of current rectifying and wave filtering circuit 3.2 is composed in parallel by three phase full wave rectification arm and the absorption capacitor C 1～C12 that rectifier diode D1～D12 constitutes; The filtering part constitutes the LCR filter circuit by inductance L 1, capacitor C 13～C20, resistance R 1～R8, and the current over pulse that the direct current that rectification is exported goes ripple to handle and overcurrent is produced suppresses.
Current rectifying and wave filtering circuit 3
.The direct voltage of 2 outputs is through the direct current output switch 3 of single-stage module
.3Export direct current output switch 3
.3 by an IGBT(igbt) the Q1(triode) constitute.3.4 pairs of single-stage module direct current output of control protection circuit switch 3.3 plays a protective role, direct current output switch 2
.Through the input of port II, wherein capacitor C 22, resistance R 10 are connected to direct current output switch 3.3 to 3 drive signal, and it is absorbed protection by governor circuit; Through diode D15 input, the composite pipe structure protective circuit property the advanced driving to triode Q2, Q3, voltage stabilizing didoe WY2 constitute realizes the power down protection to single-level circuit to the power down protection signal by the port III.
Diode D16, capacitor C 21, C23, resistance R 9, voltage stabilizing didoe WY1 are respectively and connect and constitute to absorb protective circuit; Resistance R 11, R12, R13, R14, capacitor C 24, C25, triode Q4, Q5 connect and compose each other to circuit input/output state testing circuit at the corresponding levels, and detection signal is delivered to the power supply governor circuit by the ports port IV.The state-detection of direct current output switch 3.3 is sent through the port I by diode D13, D14.
Rearmost end in single-stage module is a single-stage module direct current output bypass diode circuit 3.5, and original paper is made up of bypass diode D17, D18, grading resistor R15～R18, current-sharing capacitor C 26, C27.Connection between each single-stage output is finished by connecting line 5, and positive source output 4 is connected power source loads with power cathode output 6.
Claims (3)
1. electron gun power output circuit, comprise elementary three phase windings of major loop step-up transformer (1) and by multistage total output circuit (2) that a plurality of single-stage output circuits (3) are formed, it is characterized in that: each single-stage output circuit (3) is made up of single-stage module transformer secondary output winding (3.1), single-stage module current rectifying and wave filtering circuit (3.2), single-stage module direct current output switch (3.3), control protection electric circuit (3.4) and single-stage module dc output circuit (3.5); The output of single-stage module transformer secondary output winding (3.1) is communicated with the input of single-stage module current rectifying and wave filtering circuit (3.2); the output of single-stage module current rectifying and wave filtering circuit (3.2) is communicated with the input of single-stage module direct current output switch (3.3); the output of single-stage module direct current output switch (3.3) is communicated with the input of single-stage module dc output circuit (3.5); single-stage module direct current output switch (3.3) is provided with control protection electric circuit (3.4), direct current output switch (2
.3) drive signal is imported through the port II by governor circuit.
2. a kind of electron gun power output circuit according to claim 1 is characterized in that: described direct current output switch (3
.3) constitute by an insulated gate bipolar transistor IGBT Q1, triode Q1.
3. a kind of electron gun power output circuit according to claim 1 is characterized in that: described dc output circuit (3.5) is made up of bypass diode D17, D18, grading resistor R15～R18, current-sharing capacitor C 26, C27.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102047865A CN102244471A (en) | 2011-07-21 | 2011-07-21 | Power output circuit of electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102047865A CN102244471A (en) | 2011-07-21 | 2011-07-21 | Power output circuit of electron gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102244471A true CN102244471A (en) | 2011-11-16 |
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ID=44962359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102047865A Pending CN102244471A (en) | 2011-07-21 | 2011-07-21 | Power output circuit of electron gun |
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| Country | Link |
|---|---|
| CN (1) | CN102244471A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474189A (en) * | 2017-09-08 | 2019-03-15 | 株洲中车时代电气股份有限公司 | A kind of high-power DC power supply |
| CN109946559A (en) * | 2017-12-21 | 2019-06-28 | 成都长城开发科技有限公司 | Three-phase and four-line ammeter and its fall zero curve detection circuit |
| CN114300323A (en) * | 2021-12-29 | 2022-04-08 | 核工业理化工程研究院 | Method for rapidly controlling on-off of electron beam through pulse width modulation pulse |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002044948A (en) * | 2000-07-24 | 2002-02-08 | Toshiba Corp | Dc power source |
| CN102013802A (en) * | 2010-12-17 | 2011-04-13 | 上海小糸车灯有限公司 | BOOST circuit with short circuit protection function |
-
2011
- 2011-07-21 CN CN2011102047865A patent/CN102244471A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002044948A (en) * | 2000-07-24 | 2002-02-08 | Toshiba Corp | Dc power source |
| CN102013802A (en) * | 2010-12-17 | 2011-04-13 | 上海小糸车灯有限公司 | BOOST circuit with short circuit protection function |
Non-Patent Citations (1)
| Title |
|---|
| 韦寿祺等: "中压型大功率电子束焊机电控***的研制", 《电焊机》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474189A (en) * | 2017-09-08 | 2019-03-15 | 株洲中车时代电气股份有限公司 | A kind of high-power DC power supply |
| CN109946559A (en) * | 2017-12-21 | 2019-06-28 | 成都长城开发科技有限公司 | Three-phase and four-line ammeter and its fall zero curve detection circuit |
| CN114300323A (en) * | 2021-12-29 | 2022-04-08 | 核工业理化工程研究院 | Method for rapidly controlling on-off of electron beam through pulse width modulation pulse |
| CN114300323B (en) * | 2021-12-29 | 2024-03-08 | 核工业理化工程研究院 | Method for rapidly controlling on-off of electron beam through pulse width modulation pulse |
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Application publication date: 20111116 |