CN102136789A - High-temperature superconductive rotor for synchronous linear motor - Google Patents
High-temperature superconductive rotor for synchronous linear motor Download PDFInfo
- Publication number
- CN102136789A CN102136789A CN 201110090061 CN201110090061A CN102136789A CN 102136789 A CN102136789 A CN 102136789A CN 201110090061 CN201110090061 CN 201110090061 CN 201110090061 A CN201110090061 A CN 201110090061A CN 102136789 A CN102136789 A CN 102136789A
- Authority
- CN
- China
- Prior art keywords
- superconducting
- superconducting coil
- mover
- superconductive
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Linear Motors (AREA)
Abstract
The invention discloses a high-temperature superconductive rotor for a synchronous linear motor, which is provided with an excitation system, wherein the excitation system consists of two runway-shaped superconductive coils (1, 2); a superconductive line (3) connects the adjacent superconductive coils together to form a reversed polarity structure; the end parts of the two superconductive coils are connected to two copper bus joints which are connected with an excitation power supply; and a superconductive switch comprising a superconductive line (5) and a temperature control heater (8) and the superconductive coils are connected in parallel with the two copper bus joints. A high-temperature superconductor capable of working in a liquid nitrogen temperature area 77K is adopted in the invention, and the high-temperature superconductor has obvious advantages in aspects of reducing the space size, weight and consumption of the rotor and improving system thrust. The assembled linear motor is easy to output 300N of thrust when a clean air gap is higher than 10mm under the conditions that the motor weight does not exceed 20kg and the space size is smaller than 0.008m<3>.
Description
Affiliated technical field
The present invention relates to the high-temperature superconductor application technology, particularly a kind of high-temperature superconductor mover that is used for linear synchronous motor.
Background technology
At present, linear synchronous motor usually is used as the propulsion system of magnetic suspension train.In wherein a kind of mode of this propulsion system, stator coil is laid on the ground, and the travelling-magnetic-field of sinusoidal variations can be provided, and the mover partial fixing is in the bottom of car body.Mover can be made up of rare-earth permanent magnet or electromagnet, moves along with the variation of stator field.On principle, mover partly will constantly be followed proal stator field, and then the promotion train travels forward.If use traditional electromagnet, must need a large amount of copper cash, and the copper coil heaviness occupies a large amount of spaces, and produce a large amount of resistance losses.If the electromagnet of equal volume and weight replaces with high temperature superconductor coil, because the current density that superconductor can bear is the tens of even hundreds of times (current density of superconductor is more than 140 times of copper conductor under the 4.2K) of copper conductor, at this moment just can give mover partly by bigger electric current, and then the bigger thrust of generation, simultaneously can reduce space and the weight that mover occupies, and can be reduced to lower level to the electromagnetic consumable of mover.The problem of unique increase is that a low temperature environment need be provided, and makes the working temperature of superconductor be in it below critical temperature.
Though the existing at present many reports about the superconduction linear synchronous motor are embedded into superconducting line in the stator armature of linear electric motors mostly, because superconducting line need transmit three-phase alternating current under this situation, will inevitably cause A.C.power loss in superconductor.In the scheme that we propose, only have the excitation unit need use superconducting line, superconducting line only transmits direct current like this, has avoided A.C.power loss.Have a kind of situation partly to use superconducting line at present, but what use is the cryogenic superconductor of working temperature as 4.2K at mover.If the critical temperature of superconductor is below 30K, this superconductor is called cryogenic superconductor, and if critical temperature more than 30K, then be called high-temperature superconductor.
Summary of the invention
In view of the above shortcoming of prior art, the purpose of this invention is to provide a kind of high-temperature superconductor mover of linear synchronous motor, make it to have clear superiority aspect reduction mover bulk, weight, loss and the raising system thrust.
The objective of the invention is to realize by following means.
A kind of high-temperature superconductor mover that is used for linear synchronous motor, have a series of excitation systems of forming by two runway shape superconducting coils, superconducting line (3) couples together the structure that forms a reversed polarity with adjacent superconducting coil, described two superconducting coil ends are connected on two copper busbar joints that link to each other with field power supply, are connected in parallel on two copper busbar joints with it and also have a superconducting switch that is made of superconducting line (5) and temperature control heater 8; Described superconducting coil middle part is provided with iron core.
Adopt aforesaid way, the present invention has following advantage:
The present invention uses the high-temperature superconductor that can be operated in liquid nitrogen temperature 77K.Therefore, this patent uses Dewar to load liquid nitrogen and does not need liquid helium or other low-temperature (low temperature) vessel.Therefore, use high-temperature superconductor only to need to use cheap liquid nitrogen as cold-producing medium, and the increase that can bring the linear motor pushing force several times simultaneously.
The high-temperature superconductor mover is in series by the galvanic superconducting coil of a series of supplies, and in this case, all coils transmits identical electric current.The shape of coil is a runway shape, and this shape can make the thrust maximization (its essence is Lorentz force) of motor.Say that in essence each coil all is the electromagnet that is formed by the superconducting line coiling, finally the mode that replaces by magnetic pole is formed the mover of motor.
This patent makes the high temperature superconductor coil that is immersed in the Dewar container for liquefied nitrogen become possibility as the mover of motor, and this new scheme has clear superiority aspect system's thrust reducing mover bulk, weight, loss and improve.Be no more than 20kg, bulk less than 0.008m in motor weight
3Situation, realize the thrust of output 300N when this linear electric motors are easy to be higher than 10mm in the pure qi (oxygen) crack.
Description of drawings
Fig. 1: the vertical view of high-temperature superconductor mover of the present invention.
The A-A cutaway view of Fig. 2: Fig. 1.
Fig. 3: high-temperature superconductor mover of the present invention places the cutaway view in the Dewar.
Embodiment
Below in conjunction with accompanying drawing structure function of the present invention is described further.
High-temperature superconductor mover 9 of the present invention has the excitation system of being made up of two runway shape superconducting coils 1 and 2, superconducting line 3 couples together the structure that forms a reversed polarity with adjacent superconducting coil, described two superconducting coil ends are connected on two copper busbar joints 4 that link to each other with field power supply, are connected in parallel on two copper busbar joints with it and also have one by the superconducting switch of superconducting line 5 with 8 one-tenth of temperature control heaters.Wherein arrow indicates the sense of current, and 6 is iron-core coil.Each superconducting coil can use an iron core 6 or be a whole magnet exciting coil interpolation back iron yoke 7 (the dotted line part branch encloses among Fig. 1).Superconducting coil both can be that single cake also can be the runway shape structure of two cakes, also can be to be formed by a plurality of single cakes or two cake connection in series-parallel, and wherein the minor axis of runway is consistent with the direction of motion.The number of the superconducting coil in the described excitation system can be provided with a plurality of arbitrarily; The number of turn of winding superconducting coil also can be many arbitrarily.Described superconducting coil both can be that single cake also can be the runway shape structure of two cakes, can also be to be formed by a plurality of single cakes or two cake connection in series-parallel; Wherein the minor axis of runway is consistent with the direction of motion.
For simplicity, Fig. 1 has only provided the situation of two superconducting coil series connection, superconducting switch in addition that provides in the lump and big electric current high power constant-current source.Specific implementation process is: in case reached power reguirements, temperature control heater 8 provides the superconducting state of variations in temperature control superconducting line 5, can closed superconducting switch deenergization, like this electric current just one very under the downfield environment with loss-free full superconducting circuit in mobile.Because the resistance of superconducting circuit is almost nil, decay can not appear in the electric current of mover energized circuit in time, thereby is in " constant current " state.If this linear electric motors are applied in the maglev train system, can in a station, be earlier the superconducting coil charging, therefore after charging is finished, can take out charging plug owing to do not need extra electric energy input in the actual motion.Treat after after a while operation enters another station, as required, the charging connector of superconducting coil to be inserted in the power supply at current station, for superconducting coil charges again.By this way, train will not need to load extra power supply, thereby help to improve the lifting capacity of car body.
For guaranteeing that superconducting coil and superconducting switch can be cooled to working temperature, need to be equipped with a double-deck Dewar type container that is used to store liquid nitrogen.Superconducting coil will be fixed in the vacuum chamber of Dewar type container so that superconducting coil can more approachingly be positioned over the stator armature part on the ground rail, thereby realize stronger electromagnetic action between mover and the stator, produce bigger thrust.In this case, superconducting coil must be via the conduction cooling.The copper current bus of superconducting switch and power supply partly is held in the nexine of Dewar inwall, is immersed in the liquid nitrogen.In order to realize the electrical connection of superconducting coil and superconducting switch, can be at the inwall upper drill hole of Dewar, then at the circumfusion epoxy resin of connecting line with the protection vacuum chamber.Dewar will be fixed on the bottom of magnetic suspension train, load the propulsion system of its interior superconducting coil as train.
Fig. 2 is an example of the actual environment for use of the present invention, the Dewar sectional drawing when high-temperature superconductor mover 9 places in the vacuum chamber 10.The top flange that utilization is made by heat-insulating material connects the inwall 11 and the outer wall 12 of Dewar.Utilize rubber sheet gasket 13 sealed vacuum chambeies 10.Two superconducting coils 1 of end are connected with the copper busbar joint 4 of power supply respectively with 2.Top flange 14 has two to be used to inject the hand-hole of cold system and the exhaust outlet 15 of emission gases.Utilize vacuum nozzle 16 to vacuumize for vacuum chamber 10.The bottom of inwall can be made by ferromagnetic material and form with the back iron yoke as superconducting coil.The part of current bus bar 4 and heater 8 are immersed in the liquid container 17.
Claims (5)
1. high-temperature superconductor mover that is used for linear synchronous motor, it is characterized in that, have a series of excitation systems of forming by two runway shape superconducting coils, superconducting line (3) couples together the structure that forms a reversed polarity with adjacent superconducting coil, described two superconducting coil ends are connected on two copper busbar joints that link to each other with field power supply, are connected in parallel on two copper busbar joints with it and also have a superconducting switch that is made of superconducting line (5) and temperature control heater (8); Described superconducting coil middle part is provided with iron core.
2. the high-temperature superconductor mover that be used for linear synchronous motor according to claim 1 is characterized in that, the iron core at described superconducting coil middle part can add simultaneously again or use back iron yoke to substitute separately.
3. the high-temperature superconductor mover that be used for linear synchronous motor according to claim 1, it is characterized in that, described superconducting coil both can be that single cake also can be the runway shape structure of two cakes, also can be to be formed by a plurality of single cakes or two cake connection in series-parallel, and wherein the minor axis of runway is consistent with the direction of motion.
4. the high-temperature superconductor mover that be used for linear synchronous motor according to claim 1 is characterized in that the number of the superconducting coil in the described excitation system can be provided with a plurality of arbitrarily; The number of turn of winding superconducting coil also can be many arbitrarily.
5. the high-temperature superconductor mover that be used for linear synchronous motor according to claim 1 is characterized in that, described superconducting coil both can be that single cake also can be the runway shape structure of two cakes, can also be to be formed by a plurality of single cakes or two cake connection in series-parallel; Wherein the minor axis of runway is consistent with the direction of motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110090061 CN102136789A (en) | 2011-04-11 | 2011-04-11 | High-temperature superconductive rotor for synchronous linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110090061 CN102136789A (en) | 2011-04-11 | 2011-04-11 | High-temperature superconductive rotor for synchronous linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102136789A true CN102136789A (en) | 2011-07-27 |
Family
ID=44296461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110090061 Pending CN102136789A (en) | 2011-04-11 | 2011-04-11 | High-temperature superconductive rotor for synchronous linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102136789A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790451A (en) * | 2016-04-29 | 2016-07-20 | 西南交通大学 | Gasless electrification train |
| CN105915017A (en) * | 2016-04-15 | 2016-08-31 | 西南交通大学 | Linear traction motor of urban rail |
| CN113199944A (en) * | 2021-06-17 | 2021-08-03 | 西南交通大学 | Force transmission structure of superconducting electric suspension magnet |
| CN114649920A (en) * | 2020-12-18 | 2022-06-21 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Double-magnet multiphase superconducting linear synchronous motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07263760A (en) * | 1994-03-22 | 1995-10-13 | Fujikura Ltd | Superconductor permanent current switch and method of operating superconductor persistent current switch |
| JPH09312209A (en) * | 1996-05-21 | 1997-12-02 | Toshiba Transport Eng Kk | Superconducting magnet device |
| CN1956118A (en) * | 2005-10-24 | 2007-05-02 | 深圳安科高技术股份有限公司 | Suporconduction switch controlled by thermomagnetic |
| JP2008236936A (en) * | 2007-03-22 | 2008-10-02 | Railway Technical Res Inst | Combination propelling levitation guide and ground coil and its wiring method |
| CN101741276A (en) * | 2009-12-31 | 2010-06-16 | 电子科技大学 | Hybrid high-temperature superconducting linear magnetic suspension synchronous motor |
-
2011
- 2011-04-11 CN CN 201110090061 patent/CN102136789A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07263760A (en) * | 1994-03-22 | 1995-10-13 | Fujikura Ltd | Superconductor permanent current switch and method of operating superconductor persistent current switch |
| JPH09312209A (en) * | 1996-05-21 | 1997-12-02 | Toshiba Transport Eng Kk | Superconducting magnet device |
| CN1956118A (en) * | 2005-10-24 | 2007-05-02 | 深圳安科高技术股份有限公司 | Suporconduction switch controlled by thermomagnetic |
| JP2008236936A (en) * | 2007-03-22 | 2008-10-02 | Railway Technical Res Inst | Combination propelling levitation guide and ground coil and its wiring method |
| CN101741276A (en) * | 2009-12-31 | 2010-06-16 | 电子科技大学 | Hybrid high-temperature superconducting linear magnetic suspension synchronous motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915017A (en) * | 2016-04-15 | 2016-08-31 | 西南交通大学 | Linear traction motor of urban rail |
| CN105790451A (en) * | 2016-04-29 | 2016-07-20 | 西南交通大学 | Gasless electrification train |
| CN114649920A (en) * | 2020-12-18 | 2022-06-21 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Double-magnet multiphase superconducting linear synchronous motor |
| CN114649920B (en) * | 2020-12-18 | 2024-03-15 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Double-magnet multiphase superconducting linear synchronous motor |
| CN113199944A (en) * | 2021-06-17 | 2021-08-03 | 西南交通大学 | Force transmission structure of superconducting electric suspension magnet |
| CN113199944B (en) * | 2021-06-17 | 2022-03-15 | 西南交通大学 | Force transmission structure of superconducting electric suspension magnet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101741276B (en) | Hybrid high-temperature superconducting linear magnetic suspension synchronous motor | |
| CN102969873B (en) | A kind of high-temperature superconducting motor | |
| CN102231614B (en) | High-temperature superconductive magnetic suspension linear propulsion system with composite ontrack magnetizing function | |
| CN102136789A (en) | High-temperature superconductive rotor for synchronous linear motor | |
| CN102360692B (en) | High temperature superconducting magnet for magnetic resonance imaging system | |
| CN113815426A (en) | Intelligent rail-holding high-temperature superconducting magnetic levitation train system | |
| Dong et al. | Improvement of magnetic and cryogenic energy preservation performances in a feeding-power-free superconducting magnet system for maglevs | |
| JP4790661B2 (en) | Magnetically levitated superconducting magnet for railway vehicles | |
| Maki et al. | Study of practical applications of HTS synchronous machines | |
| CN111863374A (en) | High-temperature superconducting uninsulated magnet | |
| Nomura et al. | Flexible power interconnection with SMES | |
| CN113829888A (en) | Overhead half-pipe intelligent five-rail high-temperature superconducting magnetic levitation train system | |
| CN111130300B (en) | High-temperature superconducting linear synchronous motor | |
| CN104901512A (en) | Ocean wave direct-driven double-side superconductive linear power generation system | |
| CN210041676U (en) | High-temperature superconducting uninsulated magnet | |
| CN109660235B (en) | Thermal control type continuous current switch circuit for high-temperature superconducting electromagnet | |
| CN216697999U (en) | Magnetic levitation superconducting magnet device, carriage and vehicle | |
| CN111725969A (en) | Magnetic suspension guiding slotless iron core flat plate linear motor | |
| CN111503932A (en) | Refrigeration system and method based on high-temperature superconducting material and pulse excitation | |
| CN217035302U (en) | Magnetic levitation transportation train and vehicle-mounted superconducting magnet system of magnetic levitation transportation | |
| CN106026779B (en) | A kind of method that based superconductive bulk combines structure hybrid magnetic suspended state with superconducting coil | |
| CN212752097U (en) | Magnetic suspension guiding slotless iron core flat plate linear motor | |
| CN105790451A (en) | Gasless electrification train | |
| CN109887702B (en) | Current lead for magnet excitation of high-temperature superconducting magnetic levitation train | |
| Nagashima et al. | Force density of magnetic bearings using superconducting coils and bulk superconductors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110727 |