CN102931339A - Superconducting switch with two-sided yttrium barium copper oxide (YBCO) thin film structure - Google Patents
Superconducting switch with two-sided yttrium barium copper oxide (YBCO) thin film structure Download PDFInfo
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- CN102931339A CN102931339A CN2012104341858A CN201210434185A CN102931339A CN 102931339 A CN102931339 A CN 102931339A CN 2012104341858 A CN2012104341858 A CN 2012104341858A CN 201210434185 A CN201210434185 A CN 201210434185A CN 102931339 A CN102931339 A CN 102931339A
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Abstract
The invention discloses a superconducting switch with a two-sided yttrium barium copper oxide (YBCO) thin film structure. The superconducting switch is operated at a liquid nitrogen temperature zone with electricity, magnetism and an optimized control mode, a switch body is formed by YBCO thin film materials with two-sided structures, a superconducting layer is stopped and divided into winding paths by etching gaps (100), a plurality of dispersed etching empty holes (3) are arranged on the superconducting layer, and the etching empty holes on the front side and the rear side are distributed in staggered mode. The superconducting switch can increase line resistance, improves flexibility of space structure design and integration level of the switch, good heat transfer effect of a MgO base between two superconducting layers has good effect on thermal field balance and critical current density distribution, and uniformity and response speed of disconnection of a switch module are improved greatly.
Description
Technical field
The invention belongs to superconduction energy conversion technical field, is to use the nonlinear resistance of superconductor with the superconducting switch device of excitation, operation with closed ring and the quick demagnetization of realization superconducting magnet.
Background technology
High-temperature superconductor inductance magnetic storage energy is a kind of efficient energy storage technology, compare with capacitance energy storage have the energy storage density height, the advantage such as good stability, system bulk are little, in the fields such as traffic, space flight, electric power, medical science, be widely used.Superconducting switch is the Primary Component in the superconducting magnetic energy storage system, and the resistance variations of utilizing superconduction-Chang to lead the phase transformation appearance realizes that the disconnection of circuit is with closed.The system that superconducting switch and superconducting magnet form has pulse output, stablizes the functions such as energy storage, magnet self-shield.
High performance superconducting switch is except having the current-carrying performance of ultra-low loss, and also will having fast and effectively, turn-off characteristic comprises the turn-off time and closes two standards of resistance break; The premium properties that reaches under stable state and the transient state is the difficult point of Design ﹠ preparation high-temperature superconductor switch.
The material of preparation superconducting switch has low temperature NbTi line, belt material of high temperature superconduct (Bi system, Yi system), superconducting thin film, superconduction block material at present, and its structure of superconducting switch and performance that different materials forms are far from each other.The superconducting switch of low temperature superconducting material (being operated in 4.2K liquid helium warm area, mainly take the NbTi alloy as representative) preparation has obtained more research, and its connection resistance is very low, and is functional, the technology comparative maturity.The serviceability of low temperature superconducting material has been difficult to significantly improve, and particularly harsh low temperature environment requirement has greatly limited popularizing of its application.Belt material of high temperature superconduct be the preparation high-temperature superconductor switch usually select a kind of, form with the superconducting tape coiling, the increase of its breaking resistor depends on the increase of superconducting tape length, this will increase the volume of switch greatly, thereby increase the difficulty of wire winding; In addition in the process that superconducting switch triggers, the coil type structure is a kind of thermal modeling of sealing, the inhomogeneous of heat conduction very easily occur, and the operating time of switch can reach several seconds even tens seconds, have a strong impact on the turn-off performance of switch, need complicated trigger equipment could obtain the desirable speed of cut-offfing.Thin film switch is prepared by ybco film, ybco film generally is deposited on the dielectric substrate, thickness is 100nm-500nm, reason owing to the technique for preparing, critical current density is difficult to reach even distribution, and the current capacity in the liquid nitrogen temperature is inferior to wire rod, adds that the inhomogeneous of cancellation occurs the thermal film superconducting switch of plane formula easily, particularly multimode forms in the device, and the synchronism of intermodule is an important problem; The resistivity of YBCO ceramic material when 90K reaches 130 Ω m, can realize very high breaking resistor, and prerequisite is that effective structural design and control device are arranged.
The Main Means that three kinds of critical states of superconductor are control switchs comprises electricity, magnetic, heat, and any single triggering mode has its shortcoming at present, is difficult to realize simultaneously the turn-off time of switch and closes two electrical standards of resistance break.High performance high-temperature superconductor switch is also less at the research report of actual motion, and performance is still waiting to improve under the condition of high voltage, large electric current.
Summary of the invention
Above deficiency in view of prior art the objective of the invention is, and is improved to improve the Steady state and transient state performance of high-temperature superconductor switch from the structural design direction, obtains the two-sided ybco film switch of a kind of suitable electricity, magnetic optimum organization control.
The objective of the invention is to realize by following means.
The superconducting switch of two-sided ybco film structure, work in liquid nitrogen temperature have electricity, magnetic with and the control mode of optimum organization, switch main body is made of the ybco film material of bilateral structure.Planar circuit adopts snakelike Wiring structure, and namely the superconducting layer space that is etched is divided into zigzag path; Planar circuit has a layer inner via hole, namely has the etching emptying aperture of some distributions on the superconducting layer, and double-edged etching emptying aperture is staggered and arranges.
Adopt structure as above, bilateral structure film configuration superconducting switch, upper and lower conductive layers also connects and can improve current capacity, and serial connection can increase line resistance, has improved the flexibility of space structure design and the integrated level of switch.According to quench calorifics principle, the good heat-transfer effect of MgO substrate between two superconducting layers can play the effect that balance thermal field and critical current density distribute, and can greatly improve the synchronism that switch module cut-offs like this; High-temperature superconductor switch is operated in liquid nitrogen temperature (77K), boiling regime according to liquid nitrogen, the ybco film of bilateral structure has the thermodynamics inertia stronger than the film of single face, and switch can keep normal state after disconnecting for a long time, has improved the power conversion of superconducting magnetic physical efficiency.
The snakelike cabling of the planar circuit design of switch is to have increased the cabling effective length, thereby increases breaking resistor; The micro-through-hole design can obviously not affect the current capacity of stable state on the one hand in the YBCO superconducting layer, be equivalent to design artificially the defect distribution of ybco film, the distribution of focus on whole plane and heat conduction when promoting current trigger control, the through hole of positive and negative is staggered on the other hand, to consider when control is triggered in magnetic field that the penetration capacity in magnetic field is different on the switch plane, such via design can make superconducting thin film be subjected to face unanimously even under magnetic field, and such global design can make electromagnetism trigger and become effectively simple.
Description of drawings:
Fig. 1 is the structural representation of two-side film membrane switch.
A. planar circuit design sketch (left side is front elevation, and the right side is reverse side figure), b. forward sight design sketch, c, 3 d effect graph.1. Gold plated Layer among the figure, 2. superconducting layer, 3. layer inner via hole, 4.MgO basalis
Fig. 2 is that the two-side film membrane switch is along the design sketch of analysing and observe of x axle.
Two kinds of current-carrying modes of expression switch, a. current-carrying figure in parallel, b. series connection current-carrying figure." → " expression current direction among the figure.
Fig. 3 is the electricity that adopts two-side film membrane switch of the present invention, the triggering application scheme figure of magnetic combination.
5. DC power supply among the figure, 6. pulse current source, 7. mains switch, 8. superconducting switch module, 9. Dewar, 10. liquid nitrogen or liquid helium, 11. current feeds, 1,12. current feed, 2,13. diodes, 1,14. diode, 2,15. load resistances, 16. energy storage magnets, 17. normal conductor coils,
Embodiment
The invention will be further described below in conjunction with accompanying drawing and implementation.
Fig. 1 is the sandwich construction of superconducting switch, and switch main body is made of the ybco film material of bilateral structure, is grown in MgO substrate 4 two sides of two inch diameters by a kind of bi reverse barrel target sputtering method YBCO superconducting layer.Verticality of side wall and to the protection of film understructure and substrate when considering etching adopts the lithographic technique superconducting layer of the Laser Assisted Chemical Etching Process space 100 that is etched to stop and be divided into zigzag path; The etching emptying aperture 3 that has some distributions on the superconducting layer, and double-edged etching emptying aperture is staggered and arranges.This structure is prepared by the bi reverse barrel target sputtering method.With identical technology at the partially plating gold 1 of the film current feed as switch, the electrical connection of convenient and superconducting magnet 9.The accurately cabling of switch will rely on ybco film among Fig. 1,, this comprising mask plate making, laser add the techniques such as chemical etching.
Fig. 3 is a kind of electricity, magnetic trigger equipment.Superconducting magnetic energy storage 16 and superconducting switch 8 also are unified into tank circuit, place 10 li of low temperature space; Load resistance 15 is by current feed 11,12 and tank circuit and connecing under the room temperature, and such three main body parallel connections have consisted of tank circuit and the degaussing loop of super conductive magnetic storage energy.Normal conductor coil 17 provides the magnetic field of triggering superconducting switch among the figure, and two ends are connected with pulse current source 6, produces a pulsed magnetic field during triggering; Pulse current source 6 is simultaneously in parallel with superconducting switch module 8, exports a pulse current and triggers superconducting switch module 8, realizes the fast and effectively shutoff of superconducting thin film switch module under the acting in conjunction of magnetic field and electric field.
Adopting basic structure of the present invention, in reality is implemented the multiple variation that is equal to can be arranged, is technical scheme and inventive concept thereof according to invention in every case, is equal to replacement and changes, and all is considered to belong to the protection range of the claim of invention.
Claims (2)
1. the superconducting switch of two-sided ybco film structure, work in liquid nitrogen temperature have electricity, magnetic, heat with and the control mode of optimum organization, switch main body is made of the ybco film material of bilateral structure, it is characterized in that, planar circuit adopts snakelike Wiring structure, and namely the superconducting layer space (100) that is etched stops and is divided into zigzag path; Planar circuit has a layer inner via hole, namely has the etching emptying aperture (3) of some distributions on the superconducting layer, and double-edged etching emptying aperture is staggered and arranges.
2. the superconducting switch of two-sided ybco film structure according to claim 1 is characterized in that, the interlayer electrical connection of superconducting switch module can be connected in parallel and connect in series structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104341858A CN102931339A (en) | 2012-11-02 | 2012-11-02 | Superconducting switch with two-sided yttrium barium copper oxide (YBCO) thin film structure |
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| CN2012104341858A CN102931339A (en) | 2012-11-02 | 2012-11-02 | Superconducting switch with two-sided yttrium barium copper oxide (YBCO) thin film structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872919A (en) * | 2015-12-14 | 2017-06-20 | 上海联影医疗科技有限公司 | The exciting method of superconducting magnet component and superconducting magnet, drop magnetism method |
| CN110112283A (en) * | 2019-06-05 | 2019-08-09 | 西南交通大学 | It is a kind of to be switched from the superconducting thin film of triggering self-shield |
| CN113380490A (en) * | 2021-05-07 | 2021-09-10 | 中国科学院合肥物质科学研究院 | Superconducting switch for superconducting magnet system of superconducting maglev train |
| CN115440879A (en) * | 2022-06-16 | 2022-12-06 | 合肥本源量子计算科技有限责任公司 | Superconducting silicon wafer and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117572A (en) * | 1997-11-25 | 2000-09-12 | The United States Of America As Represented By The Secretary Of The Army | YBCO epitaxial films deposited on substrate and buffer layer compounds in the system Ca2 MeSbO6 where Me=Al, Ga, Sc and In |
| US6175749B1 (en) * | 1998-06-22 | 2001-01-16 | Forschungszentrum Julich Gmbh | Assembly of carrier and superconductive film |
| US20030222732A1 (en) * | 2002-05-29 | 2003-12-04 | Superconductor Technologies, Inc. | Narrow-band filters with zig-zag hairpin resonator |
| US20040130411A1 (en) * | 2002-02-12 | 2004-07-08 | Steve Beaudin | Band reject filters |
| CN101682343A (en) * | 2007-05-10 | 2010-03-24 | 超导技术公司 | Be used for the Zig-zag array resonators that relatively high-power hts is used |
| CN101971273A (en) * | 2008-08-04 | 2011-02-09 | K·约恩 | Method for joining second-generation high-temperature superconducting wires by melting diffusion |
| CN102265419A (en) * | 2008-12-22 | 2011-11-30 | 皇家飞利浦电子股份有限公司 | Superconducting switch cooled by means of internal cavity filled with liquid or gaseous coolant |
| CN102496764A (en) * | 2011-12-30 | 2012-06-13 | 清华大学 | Variable frequency superconducting microstrip line resonator |
| CN202871870U (en) * | 2012-11-02 | 2013-04-10 | 西南交通大学 | Superconducting switch of double-sided yttrium barium copper oxide (YBCO) film structure |
-
2012
- 2012-11-02 CN CN2012104341858A patent/CN102931339A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6117572A (en) * | 1997-11-25 | 2000-09-12 | The United States Of America As Represented By The Secretary Of The Army | YBCO epitaxial films deposited on substrate and buffer layer compounds in the system Ca2 MeSbO6 where Me=Al, Ga, Sc and In |
| US6175749B1 (en) * | 1998-06-22 | 2001-01-16 | Forschungszentrum Julich Gmbh | Assembly of carrier and superconductive film |
| US20040130411A1 (en) * | 2002-02-12 | 2004-07-08 | Steve Beaudin | Band reject filters |
| US20030222732A1 (en) * | 2002-05-29 | 2003-12-04 | Superconductor Technologies, Inc. | Narrow-band filters with zig-zag hairpin resonator |
| CN101682343A (en) * | 2007-05-10 | 2010-03-24 | 超导技术公司 | Be used for the Zig-zag array resonators that relatively high-power hts is used |
| CN101971273A (en) * | 2008-08-04 | 2011-02-09 | K·约恩 | Method for joining second-generation high-temperature superconducting wires by melting diffusion |
| CN102265419A (en) * | 2008-12-22 | 2011-11-30 | 皇家飞利浦电子股份有限公司 | Superconducting switch cooled by means of internal cavity filled with liquid or gaseous coolant |
| CN102496764A (en) * | 2011-12-30 | 2012-06-13 | 清华大学 | Variable frequency superconducting microstrip line resonator |
| CN202871870U (en) * | 2012-11-02 | 2013-04-10 | 西南交通大学 | Superconducting switch of double-sided yttrium barium copper oxide (YBCO) film structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872919A (en) * | 2015-12-14 | 2017-06-20 | 上海联影医疗科技有限公司 | The exciting method of superconducting magnet component and superconducting magnet, drop magnetism method |
| CN110112283A (en) * | 2019-06-05 | 2019-08-09 | 西南交通大学 | It is a kind of to be switched from the superconducting thin film of triggering self-shield |
| CN113380490A (en) * | 2021-05-07 | 2021-09-10 | 中国科学院合肥物质科学研究院 | Superconducting switch for superconducting magnet system of superconducting maglev train |
| CN115440879A (en) * | 2022-06-16 | 2022-12-06 | 合肥本源量子计算科技有限责任公司 | Superconducting silicon wafer and preparation method thereof |
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Application publication date: 20130213 |