CN100429862C - Fast charging device for superconducting coil current regulating switch - Google Patents
Fast charging device for superconducting coil current regulating switch Download PDFInfo
- Publication number
- CN100429862C CN100429862C CNB2006100410849A CN200610041084A CN100429862C CN 100429862 C CN100429862 C CN 100429862C CN B2006100410849 A CNB2006100410849 A CN B2006100410849A CN 200610041084 A CN200610041084 A CN 200610041084A CN 100429862 C CN100429862 C CN 100429862C
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- capacitor
- parallel
- superconducting coil
- switch
- thyristor
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Abstract
This invention discloses a quick charge device used in superconduction coil current adjusting switches characterizing that after a leading-in voltage is cut in a transformation commutation circuit serial to a current-limit resistor, it is parallel to a diode, both ends of which are parallel to a branch connected to inductor L4 and capacitor C in series, both ends of the capacitor are parallel to a serial branch composed of inductor L, TH3 and thyristor TH-SW, which has been used in large power thyristor switches.
Description
Technical field
The present invention relates to electronic technology field, specifically is the quick charge device that is used for superconducting coil current regulating switch.
Background technology
Along with the development of superconductor applications technology, work in the electric current increasing (for example, the electric current of EAST device has reached 15kA) of superconducting coil, to the quick adjustment of the big electric current of superconducting coil, conventional mechanical switch can not meet the demands.There is following deficiency in conventional mechanical switch: at first, the operate time of switch is long, generally is about 100ms; Secondly, have the arcing phenomenon during disjunction, ablation contact, breaking current are big more, and it is serious more to ablate, even the disjunction failure occurs.Be to realize the quick adjustment of the big electric current of superconducting coil, utilizing the quick consistency of power electronic device switch to make up big capacity switch becomes inevitable.Because the thyristor device has the voltage height, electric current is big, therefore select its element for use as high-power switching device.Conventional charging device is used for the large capacitor charging, and speed is slow.If improve its charging rate, must realize by improving its power, certainly will make device huge, the expense costliness.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of quick charge device that is used for superconducting coil current regulating switch for overcoming weak point of the prior art.
Technical scheme of the present invention is as follows:
The quick charge device that is used for superconducting coil current regulating switch, it is characterized in that primary voltage inserts the transformation rectification circuit, behind the transformation rectification circuit series limiting resistor R1, diode D is connected in parallel, diode D two ends also are connected with inductance L 4 and the branch road of capacitor C series connection formation, and the capacitor C two ends are parallel with the series arm that inductance L, TH3 and thyristor TH-SW constitute.
Diode D two ends also connect inductance L 4 and the branch road of variable resistor MOV series connection formation, and resistance MOV two ends are parallel with resistance R 2, and resistance R 2 two ends are connected in parallel to vacuum switch S by vacuum switch S respectively
0With the series arm that resistance R 3 constitutes, described series arm two ends are parallel with inductance L, capacitor C loop, are in series with TH3 and thyristor TH-SW in inductance L, the capacitor C loop.
The present invention has been used for the high-power thyristor switch, utilizes the reverse voltage after the discharge of each capacitor to realize recharging fast for capacitor, has both satisfied the frequent requirements of one's work of high-power thyristor switch, has accomplished the compact conformation, economical and practical of charging device again.
Description of drawings
Fig. 1 is an electrical principle schematic diagram of the present invention.
Embodiment
Referring to accompanying drawing, the present invention partly forms by 1,2,3,4,5 etc.1 part is the transformation rectification unit; 2 parts are the unit that recharges after the capacitor discharge; 3 parts are capacitor discharge unit; 4 parts are external unit, the high power device part of thyristor switch, and charging device provides discharging current to realize the disjunction of thyristor switch for it; 5 parts are the control section of loop discharge, by the external logic signal controlling, realize the disjunction of thyristor switch.Remainder is an auxiliary unit among the figure, looks concrete working condition and is accepted or rejected.In breaking course, the voltage of capacitor C recharges through 2 parts, for the disjunction once more of thyristor switch is prepared.
Thyristor switch work with 15kA is example, and used capacitor C is 12mF, and operating voltage is 2500V.The primary voltage of rectifying device is defined as 2000VAC, and the current-limiting resistance of DC side is chosen to be 100 Ω.Therefore the transformer of charger and rectifier cell can select less capacity (transformer can be selected several kVA, and rectifier cell can be selected can meet the demands about 30A).S is a vacuum switch among the figure, when nonserviceabling capacitor and thyristor switch is broken away from high-pressure section.R2 is used to improve the initial combined floodgate situation of transformer.Condenser voltage when R3 and S0 are used for end-of-job is released.
By TH3 control conducting, capacitor C discharges by L, and TH-SW provides reverse current for thyristor switch.L4 and D are used to realize oppositely recharging of condenser voltage, are prepared as the disjunction once more of thyristor switch TH-SW.The parameter of L4 and D can determine that generally should select the cycle of recharging is more than ten times of discharge cycle, in order to avoid influence the breaking course of thyristor switch according to the capacitor velocity of discharge.Simultaneously, the dead resistance that recharges the loop is unsuitable excessive, significantly decay occurs otherwise capacitor electrode is pressed in the process that recharges, and influences charging rate.
Claims (1)
1, the quick charge device that is used for superconducting coil current regulating switch, it is characterized in that primary voltage inserts the transformation rectification circuit, transformation rectification circuit series limiting resistor R1, diode D constitute the loop, diode D two ends also connect inductance L 4 and the branch road of variable resistor MOV series connection formation, variable resistor MOV two ends are parallel with resistance R 2, and resistance R 2 two ends are connected in parallel to vacuum switch S by vacuum switch S respectively
0With the series arm that resistance R 3 constitutes, vacuum switch S
0The series arm two ends that constitute with resistance R 3 are parallel with capacitor C, are connected in series with capacitor C, thyristor TH3 and thyristor TH-SW between the capacitor C two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100410849A CN100429862C (en) | 2006-07-19 | 2006-07-19 | Fast charging device for superconducting coil current regulating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100410849A CN100429862C (en) | 2006-07-19 | 2006-07-19 | Fast charging device for superconducting coil current regulating switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1889346A CN1889346A (en) | 2007-01-03 |
| CN100429862C true CN100429862C (en) | 2008-10-29 |
Family
ID=37578607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100410849A Expired - Fee Related CN100429862C (en) | 2006-07-19 | 2006-07-19 | Fast charging device for superconducting coil current regulating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100429862C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205745A (en) * | 2016-07-27 | 2016-12-07 | 中国科学院等离子体物理研究所 | A kind of fusion power supply topologies of concentration supply power |
| CN111431290A (en) * | 2019-01-10 | 2020-07-17 | 上海交通大学 | Energy feed conversion device with low-temperature coil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5181170A (en) * | 1991-12-26 | 1993-01-19 | Wisconsin Alumni Research Foundation | High efficiency DC/DC current source converter |
| US20020030952A1 (en) * | 1999-11-24 | 2002-03-14 | American Superconductor Corporation, A Delaware Corporation | Method and apparatus for discharging a superconducting magnet |
| CN1567689A (en) * | 2003-06-24 | 2005-01-19 | 中国科学院电工研究所 | A current regulator for charging and discharging of superconducting magnet |
-
2006
- 2006-07-19 CN CNB2006100410849A patent/CN100429862C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5181170A (en) * | 1991-12-26 | 1993-01-19 | Wisconsin Alumni Research Foundation | High efficiency DC/DC current source converter |
| US20020030952A1 (en) * | 1999-11-24 | 2002-03-14 | American Superconductor Corporation, A Delaware Corporation | Method and apparatus for discharging a superconducting magnet |
| CN1567689A (en) * | 2003-06-24 | 2005-01-19 | 中国科学院电工研究所 | A current regulator for charging and discharging of superconducting magnet |
Non-Patent Citations (1)
| Title |
|---|
| 大功率直流晶闸管开关设计及其可靠性分析. 温家良，傅鹏，刘正之，汤广福. 电力系统自动化，第30卷第5期. 2006 * |
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| Publication number | Publication date |
|---|---|
| CN1889346A (en) | 2007-01-03 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20170719 |
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| CF01 | Termination of patent right due to non-payment of annual fee |