KR101649291B1 - Superconducting coils using partial insulation winding technique and manufacturing method thereof - Google Patents
Superconducting coils using partial insulation winding technique and manufacturing method thereof Download PDFInfo
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- KR101649291B1 KR101649291B1 KR1020140141766A KR20140141766A KR101649291B1 KR 101649291 B1 KR101649291 B1 KR 101649291B1 KR 1020140141766 A KR1020140141766 A KR 1020140141766A KR 20140141766 A KR20140141766 A KR 20140141766A KR 101649291 B1 KR101649291 B1 KR 101649291B1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
Abstract
The present invention relates to a method of manufacturing a superconducting coil and a superconducting coil using a partial insulation winding, wherein the superconducting coil includes an insulated superconducting wire wound around a bobbin and a bobbin, The insulating material is partially inserted between the wound superconducting wires by inserting the insulating material at predetermined intervals, thereby achieving high thermal stability and improvement of charge / discharge delay phenomenon at the same time.
Description
The present invention relates to a winding technique for manufacturing a superconducting coil, and more particularly, to a partial insulation technique for improving the charge / discharge delay of a non-insulated superconducting coil in manufacturing a superconducting coil by winding a high-temperature superconducting wire formed of a superconducting material The present invention relates to a superconducting coil and a method of manufacturing a superconducting coil, which can improve the low thermal stability of an insulation coil and improve a charge / discharge delay phenomenon of a non-insulation coil.
The superconducting phenomenon is called a superconducting phenomenon, in which a material in a phase transition state is rapidly reduced in electric resistance at a temperature below a critical temperature to zero. A superconductor with a critical temperature of 20 K or less is called a low-temperature superconductor (LTS). On the other hand, LaBaCuO, which is a high temperature superconductor (HTS) with a critical temperature of about 30K, and BiSrCaCuO, TlBaCaCuO, and HgBaCaCuO, which are high temperature superconductors, were found in addition to YBaCuO, which is an oxide superconductor having a critical temperature above a liquid nitrogen temperature (77K). The discovery of high-temperature superconductors led to the use of liquid nitrogen instead of liquid helium as a refrigerant, resulting in a significant reduction in the cost of cooling the device, and the development of high-temperature superconducting power devices (generators, superconducting magnetic energy storage devices,
A superconducting coil is a coil formed by winding (winding) a wire of such a superconductor. When an electric current flows through the superconducting coil, the coil becomes an electromagnet. The superconducting tape is generally a thin wire of copper in the superconductor of the base material as to put more than one superconductor is used for this, such as NbTi, Nb 3 Sn, V 3 Ga. Since the electric resistance of a superconductor is '0', no current is generated and no electric current is consumed. However, if the magnetic field becomes stronger, the superconducting state collapses to return to the normal metal with resistance. Therefore, the coil must be made by selecting a material that can overcome this. Prior art documents set forth below provide a method for manufacturing a superconducting coil in a synchronous rotating machine and superconducting system windings in a rotor.
On the other hand, in the superconducting coil, superconducting coils used in an induction-repulsion type magnetic railway vehicle are formed by winding a superconducting wire embedded with fine wire of niobium (Nb) and titanium (Ti) And then impregnated with an epoxy resin. The superconducting coil is housed in the inner tank (inner tank) together with the permanent current switch, and after the current is supplied from the room temperature portion through the power lead, it enters the permanent current mode. A protective resistor may be placed between the ends of the coil to prevent the superconducting coil from burning when the permanent current mode is destroyed.
Such superconducting coils may have different insulating materials depending on the application site and characteristics. However, since they have different problems, it is necessary to develop superconducting coils having better required characteristics.
SUMMARY OF THE INVENTION An object of the present invention is to solve the problem that a conventional insulating coil has a low thermal stability due to limited heat propagation due to unexpected overcurrent due to an unexpected overcurrent due to low heat transfer characteristics of an insulating material, In the case of the non-insulation coil proposed to overcome this problem, it is possible to solve the side effect of delaying the charging / discharging due to the removal of the insulating material between the turns. Especially, since the charging / We want to overcome the limitation of application to some power equipment.
According to an aspect of the present invention, there is provided a superconducting coil comprising: a bobbin; And an insulated superconducting wire wound around the bobbin, wherein the superconducting wire is partially insulated between the superconducting wires wound by inserting an insulating material at predetermined intervals when the superconducting wire is wound on the bobbin .
In the superconducting coil according to one embodiment, the ratio of the partial insulation turns, which indicates the ratio of the insertion section into which the insulating material is inserted and the non-insertion section into which the insulation material is not inserted, is experimentally calculated through the characteristics evaluation of the superconducting coil . In addition, the characteristic evaluation may include at least one of a charge delay time and a charge-discharge delay time depending on the insertion ratio of the insulating material.
In the superconducting coil according to one embodiment, the wire rod of the insertion section in which the insulating material is inserted has a smaller number of turns than the wire rod of the non-insertion section in which the insulating material is not inserted.
In the superconducting coil according to one embodiment, the ratio of the partial insulation turns, which indicates the ratio of the insertion section into which the insulating material is inserted and the non-insertion section into which the insulating material is not inserted, is inversely proportional to the size of the charging delay time using the superconducting coil do.
In the superconducting coil according to an exemplary embodiment, the ratio of the partial insulation turns, which indicates the ratio of the insertion section into which the insulating material is inserted and the non-insertion section into which the insulating material is not inserted, Inversely. In addition, the power supply delay time may be set based on a time constant due to a characteristic resistance between turns of the windings.
According to an aspect of the present invention, there is provided a method of manufacturing a superconducting coil, including: receiving a required characteristic of a superconducting coil; Calculating a partial insulation winding ratio indicating a ratio of an insertion section in which the insulation material is inserted into the superconducting coil and a non-insertion section in which the insulation material is not inserted, according to the input characteristics; And winding a superconducting wire of non-insulation type on the bobbin, wherein the step of winding the superconducting wire comprises winding the superconducting wire on the bobbin at a predetermined interval determined by the partial insulation winding ratio, The insulating material is partially formed between the superconducting wires wound by being inserted.
In the method of manufacturing a superconducting coil according to an embodiment, the partial insulation winding ratio is experimentally calculated through evaluation of characteristics of the superconducting coil, and the characteristic evaluation is performed based on the charging delay time and the discharge time And a delay time.
In the method of manufacturing a superconducting coil according to an embodiment, the wire rod of the insertion section in which the insulating material is inserted has a smaller number of turns than the wire rod of the non-insertion section in which the insulating material is not inserted.
In the method of manufacturing a superconducting coil according to an embodiment, the partial insulation winding ratio is inversely proportional to the magnitude of the charge delay time using the superconducting coil.
In the method of manufacturing a superconducting coil according to an embodiment, the partial insulation winding ratio is inversely proportional to a magnitude of a power supply discharge delay time using the superconducting coil. Also, the power supply delay time can be set based on the time constant due to the turn-on-contact resistance of the windings.
The embodiments of the present invention adopt a partial insulation technique in which insulating material is partially inserted in the winding using the non-insulating high-temperature superconducting wire, so that the superconducting coil to be used in the superconducting rotating machine has high thermal stability, Temperature superconducting coil according to an embodiment of the present invention and a manufacturing method thereof can be widely utilized in a high-temperature superconducting power device such as an energy storage device (SMES), which requires rapid charging / discharging by improving the discharge delay phenomenon.
1 is a cross-sectional view of a superconducting coil manufactured using an insulating material.
2 is a cross-sectional view of a superconducting coil according to a non-insulating winding method in which an insulating material is removed.
3 is a cross-sectional view of a superconducting coil using a partial insulation winding according to an embodiment of the present invention.
4 is a flowchart illustrating a method of manufacturing a superconducting coil using a partial insulation winding according to an embodiment of the present invention.
Fig. 5 is a diagram illustrating a comparison of characteristics of superconducting coils according to the degree of use of an insulating material. Fig.
Prior to describing the embodiments of the present invention, the superconducting coil technology will be outlined, and the problems and limitations of each of the two representative methods (insulated and non-insulated) will be reviewed. The technical means adopted by embodiments of the invention will be introduced in sequence.
Superconducting rotating machines including superconducting coils include, but are not limited to, superconducting generators and superconducting motors. Generally, these machines include electromagnetically coupled stator and rotor. The rotor may include a multipole rotor core and a field coil mounted on the rotor core. The rotor core may comprise a magnetically permeable material, such as an iron core rotor.
A conventional copper coil or permanent magnet is conventionally used as the field coil of such a conventional rotating machine. However, the size of the magnetic field that can be generated by the copper coil and the permanent magnet is limited. In particular, since the coil generated by the electrical resistance does not conduct a large current, the coil has a disadvantage that the size of the coil is increased have.
On the other hand, superconducting coils, which have been actively studied recently, can conduct a large amount of electric current because they have no electric resistance under a critical temperature, a critical current and a critical magnetic field inherent to the coils. Therefore, The use of such superconducting coils for field coils of large-capacity rotary machines is very advantageous in weight reduction and miniaturization of the apparatus.
Generally, when a superconducting coil is manufactured, a superconducting insulated coil inserted with an insulating material between turns is used in order to prevent an electrical short. In this case, due to the low heat transfer characteristic of the insulating material, ) Is limited to propagate in a radial direction, so that the insulation coil has a low thermal stability.
However, in the case of high-temperature superconductors, since the substrate and the stabilizer layer can serve as their own insulating layers, it is possible to propose an insulated winding technique in which the inter-turn insulating material is removed based on this idea. This non-isolated winding technology enables miniaturization of the coil due to the omission of the insulating material, and excessive heat / current due to generation of the hot spot can be automatically bypassed when unexpected overcurrent flows, so that the low thermal / Can be overcome.
However, in the case of such an insulated coil, charge / discharge delay phenomenon occurs due to an increase in time constant (τ) due to a characteristic resistance (R c ), and therefore, (SMES). ≪ / RTI >
Therefore, it is necessary to improve the characteristic problems existing in these two winding methods (the insulation type and the non-insulation type), and the embodiments of the present invention described below can provide advantages of the insulation winding technology and the non- At the same time, we want to complement weaknesses of both.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted.
When the superconducting coils are wound without inserting the insulators, the non-insulated superconducting coils are delayed during charging / discharging. In order to solve the problems, embodiments of the present invention include a technique of inserting and inserting an insulator I would like to propose.
FIGS. 1 and 2 illustrate two superconducting coils of the type described above. In FIG. 1, the non-insulated wire is shown when the wire is represented by a solid line and the insulated wire is represented when the wire is represented by a broken line .
1 is a cross-sectional view of a high-temperature superconducting coil manufactured using an insulating material. Referring to FIG. 1, the high-
As described above, in the case of the insulation coil shown in FIG. 1, due to the low heat transfer characteristics of the insulating material, radial propagation of the heat generated by the unexpected overcurrent due to the superconductor is limited. And the size of the insulating coil is relatively large due to the inserted insulating material.
2 is a cross-sectional view of a high-temperature superconducting coil according to a non-insulating winding method in which an insulating material is removed. Referring to the non-insulation coil of FIG. 2, the superconducting non-insulation coil is formed by winding the high-
As described above, in the case of the non-insulating coil of FIG. 2, the coil can be downsized due to the omission of the insulating material, and the low thermal / electrical stability of the insulating coil can be overcome. The increase of the time constant caused by the increase of the charge / discharge delay phenomenon occurred.
Therefore, the insulation coil of FIG. 1 and the non-insulation coil of FIG. 2 are improved to introduce the partial insulation winding technique through FIG.
3 is a cross-sectional view of a superconducting coil using a partial insulation winding according to an embodiment of the present invention. The
Similar to FIGS. 1 and 2, the superconducting coil is formed by partially winding the high-temperature superconducting wire together with the insulating material around the
3 includes a
These superconducting wires are composed of superconducting materials. Since these superconducting materials cause superconducting phenomena at very low temperatures, they are processed into wires to be used for winding superconducting coils. Currently known superconductors are alloys or metal compounds containing elements such as niobium and vanadium, among which the well known are niobium-zirconium (about 20% zirconium) alloy, niobium-titanium (about 40% a compound of gallium V 3 Ga, etc. -, niobium-tin Nb 3 Sn and a compound of vanadium. The upper limits of the temperatures at which these materials exhibit superconducting phenomena are 10.8 K, 9.7 K, 18.0 K, and 14.5 K, respectively. Those skilled in the art of superconducting technology of the present invention can use other superconducting materials You can also choose materials.
In the superconducting coil of FIG. 3, the 'partial insulation winding ratio' indicating the ratio of the insertion section into which the insulation material is inserted and the non-insertion section into which the insulation material is not inserted is calculated experimentally through the characteristic evaluation of the superconducting coil . Particularly, it is preferable that the characteristic evaluation includes at least one of a charge delay time and a rapid discharge delay time depending on an inserting rate of the insulating material.
However, it is preferable that the wire rod of the insertion section in which the insulating material is inserted has a smaller number of turns than the wire rod of the non-insertion section in which the insulating material is not inserted. That is, when the superconducting wire is wound on the
On the other hand, the shape of the bobbin to which the partially insulated high-temperature superconducting wire is wound can be variously modified in accordance with the application form of the superconducting coil, and the bobbin having a cylindrical cross-section shown in Fig. 3 is only one example. And does not limit the application form.
Further, the kind of the partial insulation material inserted into the superconducting coil may be applied in various forms according to the demand of the user. For example, Kapton or Nomex may be used as an insulation material, Another material with an insulating effect may be adopted.
FIG. 4 is a flowchart illustrating a method of manufacturing a superconducting coil using a partial insulation winding according to an embodiment of the present invention, and includes the following series of processes.
In step S410, the required characteristics of the superconducting coil are input. This demand characteristic is a parameter specifying the operating range and output to be achieved through the superconducting coil, and depends on the characteristics of the wire as well as the insulation ratio in the partially insulated winding. Therefore, the demand characteristic corresponds to the output specification of the superconducting coil.
In step S420, a 'partial insulation winding ratio' indicating a ratio between an insertion section in which the insulation material is inserted in the superconducting coil and a non-insertion section in which the insulation material is not inserted is calculated according to the required characteristics inputted in step S410. This partial insulation winding ratio can be experimentally calculated through characterization of the superconducting coil, which will be a pure 'insulation coil' and a pure 'non-insulation coil', respectively. That is, the characteristic evaluation value when the insulation coil is implemented under the condition that the physical characteristics of the superconducting coil and the wire composing the superconducting coil are the same, and the characteristic evaluation value when the insulationless coil is implemented, . Then, a linear change amount of each characteristic evaluation value connecting the thresholds at both extremes may be estimated, and the partial insulation winding ratio matching the required characteristics input through step S410 may be calculated. The characteristic evaluation may include at least one of a charge delay time and a power supply discharge delay time depending on an inserting rate of the insulating material.
In step S430, the superconducting wire of non-insulation type is wound on the bobbin. At this time, the partial insulation winding process in step S435 is performed. When the superconducting wire is wound on the bobbin, the insulation material is inserted at predetermined intervals determined according to the ratio of the partial insulation windings calculated in step S420, The insulating material is partially formed therebetween. In particular, the step of inserting the insulating material in step S435 may be manufactured by inserting the insulator evenly between the non-insulated turns while the winding tension is maintained in winding the coils. The process of inserting the insulating material may vary depending on the characteristics of the winding machine. Any method can be used to supply the insulating material to the winding process according to the previously determined partial insulation winding ratio.
Meanwhile, as described above, the wire rod of the insertion section in which the insulating material is inserted preferably has a smaller number of turns than the wire rod of the non-insertion section in which the insulating material is not inserted.
The partial insulation winding ratio is inversely proportional to the magnitude of the charging delay time using the superconducting coil, and inversely proportional to the magnitude of the power supply discharging delay time using the superconducting coil. In the latter case, it is preferable that the power-supply delay time is set based on a time constant due to a characteristic resistance between turns of the windings.
FIG. 5 is a graph showing a comparison of characteristics of superconducting coils according to the degree of use of an insulating material, and shows specifications of three coils used for evaluating characteristics of a superconducting coil. Referring to FIG. 5, the physical properties of the wire and wire used in the three cases were maintained under the same conditions, and only the presence or absence of the insulating material and the ratio were different. Of course, it is natural that the physical size of the superconducting coil varies due to the insulating material. In the case of the partially insulated superconducting coil adopted in the embodiments of the present invention, the method of inserting the insulated superconducting coil every 5 turns is exemplified, and a 'portion' indicating the ratio of the inserting portion into which the insulating material is inserted and the non- Insulation winding ratio 'is 0.2 (1: 5).
In addition to the comparison table shown in FIG. 5, charging and discharging tests were performed using non-insulating coils, partial insulating coils, and insulating coils to confirm charging / discharging delay and improvement of the non-insulating coils. The same conclusion was obtained.
First, the correlation between the insertion amount of insulator in the superconducting coil and the charge delay was confirmed. For this purpose, the change of the magnetic field with the time of superconducting coil charging was observed. Charging experiments were conducted on each superconducting coil (non-insulating coil and partial insulating coil), and the current was charged by a predetermined amount per unit time, and the delay was confirmed.
As a result, it can be confirmed that the charging delay of the non-insulated coil is improved by the partially insulated coil utilizing the partial insulation technique adopted in the embodiments of the present invention. That is, it is confirmed that the charging delay time is significantly shortened in the case of the partial insulation coil compared to the non-insulation coil.
As a result, the ratio of the partial insulation turns indicating the ratio of the insertion section into which the insulating material is inserted and the non-insertion section into which the insulating material is not inserted is inversely proportional to the size of the charging delay time using the superconducting coil And it is possible to estimate the correlation between the partial insulation winding ratio and the charge delay time by measuring representative index values for each section.
Second, the correlation between the insertion amount of the insulator in the superconducting coil and the discharge delay phenomenon was confirmed. For this purpose, we observed the change of magnetic field with time during the discharge. The discharge test was carried out for a total of three coils (non-insulation coil, partial insulation coil and insulation coil). After the constant current was maintained, the power supply was cut off and the magnetic field The change was confirmed. In this case, the rapid discharge delay time can be set based on the time constant due to the characteristic resistance between turns of the windings. In the experiment, the time constant The time point at which the value normalized by the magnetic field becomes a specific value is defined as the decay time (τ) of the magnetic field.
As a result, it is confirmed that the discharge delay phenomenon of the non - insulated coil is also improved through the partial insulated coil using the partial insulated technology. That is, it can be confirmed that the discharge time of the partial insulation coil is significantly reduced compared to the non-insulation coil based on the time point at which the value normalized by the magnetic field becomes a predetermined value. Particularly, it has been noted that although the partial insulating coils use a low ratio of insulating materials, performance characteristics close to those of the insulating coils are shown.
As a result, the ratio of the partial insulated winding, which indicates the ratio of the inserting section into which the insulator is inserted and the non-inserting section into which the insulator is not inserted, is inversely proportional to the magnitude of the power supply delay time using the superconducting coil And it is possible to estimate the correlation between the partial insulation winding ratio and the discharge delay time by measuring representative index values for each section.
According to the embodiments of the present invention described above, by adopting the partial insulation technique of inserting the insulating material partly in the winding using the non-insulating high-temperature superconducting wire, it is possible to improve the charging / discharging delay phenomenon of the non- In addition, it is possible to overcome the limit of low thermal stability of the insulation coil and to manufacture a coil having fast charging / discharging speed and high thermal stability. As a result, there is an advantage that the high-temperature superconducting coil according to the embodiment of the present invention and its manufacturing method can be widely used in a high-temperature superconducting power device such as an energy storage device (SMES) requiring fast charging / discharging.
The present invention has been described above with reference to various embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.
110: Bobbin
120: Insulated high-temperature superconducting wire
210: Non-Insulated High-Temperature Superconducting Wire Rod
310: Insulated portion of partially insulated high-temperature superconducting wire
320: Partially insulated high-temperature superconducting wire
Claims (13)
And an insulated superconducting wire wound around the bobbin,
Wherein the superconducting wire is partially insulated between the superconducting wires wound by inserting an insulating material at predetermined intervals when the superconducting wire is wound on the bobbin,
The ratio of the partial insulation turns, which indicates the ratio of the insertion section into which the insulating material is inserted and the non-insertion section into which the insulation material is not inserted, is determined in consideration of the charging / discharging delay time and the thermal stability,
Wherein the wire of the insertion section in which the insulating material is inserted has a smaller number of turns than the wire of the non-insertion section in which the insulating material is not inserted.
Wherein a ratio of a partial insulation winding indicating a ratio of an insertion section into which the insulation material is inserted and a non-insertion section into which the insulation material is not inserted is calculated experimentally through characterization of the superconducting coil.
Wherein the characteristic evaluation includes at least one of a charging delay time and a feeding delay time depending on an insertion ratio of the insulating material.
Wherein a ratio of a partial insulation winding, which represents a ratio of an insertion section into which the insulation material is inserted and a non-insertion section into which the insulation material is not inserted, is inversely proportional to a size of the charging delay time using the superconducting coil.
Wherein a ratio of a partial insulation winding indicating a ratio of an insertion section in which the insulation material is inserted to a non-insertion section in which the insulation material is not inserted is inversely proportional to a magnitude of a power supply discharge delay time using the superconducting coil.
The supply /
Is set on the basis of a time constant due to a characteristic resistance between turns of a winding of the superconducting coil.
Calculating a partial insulation winding ratio indicating a ratio of an insertion section in which the insulation material is inserted into the superconducting coil and a non-insertion section in which the insulation material is not inserted in consideration of the charging / discharging delay time and the thermal stability according to the inputted required characteristics; And
Winding a non-insulated superconducting wire to the bobbin,
Wherein the step of winding the superconducting wire comprises:
Wherein when the superconducting wire is wound on the bobbin, the insulating material is partially inserted between the superconducting wires wound by inserting the insulating material at predetermined intervals determined by the ratio of the partial insulating windings. .
The partial insulation winding ratio is experimentally calculated through evaluation of characteristics of the superconducting coil,
Wherein the characteristic evaluation includes at least one of a charging delay time and a feeding delay time depending on an insertion ratio of the insulating material.
Wherein the wire of the insertion section in which the insulating material is inserted has a smaller number of turns than the wire of the non-insertion section in which the insulating material is not inserted.
Wherein the partial insulation winding ratio is inversely proportional to a magnitude of a charging delay time using the superconducting coil.
Wherein the partial insulation winding ratio is inversely proportional to a magnitude of a power supply discharge delay time using the superconducting coil.
The supply /
Wherein the time constant is set based on a time constant due to a contact resistance between turns of the winding.
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| KR1020140141766A KR101649291B1 (en) | 2014-10-20 | 2014-10-20 | Superconducting coils using partial insulation winding technique and manufacturing method thereof |
| PCT/KR2015/007328 WO2016064069A1 (en) | 2014-10-20 | 2015-07-15 | Superconducting coil using partially-insulating winding, and method for manufacturing superconducting coil |
| JP2017521237A JP6491331B2 (en) | 2014-10-20 | 2015-07-15 | Superconducting coil using partially insulated winding and method of manufacturing superconducting coil |
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| KR1020140141766A KR101649291B1 (en) | 2014-10-20 | 2014-10-20 | Superconducting coils using partial insulation winding technique and manufacturing method thereof |
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| JP2014022693A (en) | 2012-07-23 | 2014-02-03 | Toshiba Corp | Superconducting coil and manufacturing method therefor |
| JP2014161427A (en) | 2013-02-22 | 2014-09-08 | Hitachi Medical Corp | Superconducting magnet device and magnetic resonance imaging apparatus |
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| JPS6086808A (en) * | 1983-10-19 | 1985-05-16 | Mitsubishi Electric Corp | Protective device for superconducting device |
| JP2523632B2 (en) * | 1987-05-11 | 1996-08-14 | 株式会社東芝 | Superconducting coil and manufacturing method thereof |
| JPH04343404A (en) * | 1991-05-21 | 1992-11-30 | Furukawa Electric Co Ltd:The | Solenoid superconducting coil |
| JP2905317B2 (en) * | 1991-08-26 | 1999-06-14 | 三菱電機株式会社 | Superconductive magnet |
| JPH06176924A (en) * | 1992-12-09 | 1994-06-24 | Sumitomo Electric Ind Ltd | Superconducting magnet |
| JPH0817263A (en) * | 1994-06-29 | 1996-01-19 | Chodendo Hatsuden Kanren Kiki Zairyo Gijutsu Kenkyu Kumiai | Superconductive stranded wire conductor |
| JPH11135320A (en) * | 1997-10-30 | 1999-05-21 | Mitsubishi Electric Corp | Superconducting coil and its manufacture |
| JP2000277322A (en) * | 1999-03-26 | 2000-10-06 | Toshiba Corp | High-temperature superconducting coil, high-temperature superconducting magnet using the same, and high- temperature superconducting magnet system |
| US6922885B2 (en) | 2001-05-15 | 2005-08-02 | General Electric Company | High temperature superconducting racetrack coil |
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| JP2014022693A (en) | 2012-07-23 | 2014-02-03 | Toshiba Corp | Superconducting coil and manufacturing method therefor |
| JP2014161427A (en) | 2013-02-22 | 2014-09-08 | Hitachi Medical Corp | Superconducting magnet device and magnetic resonance imaging apparatus |
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| WO2016064069A1 (en) | 2016-04-28 |
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