EP4073916A1 - Pastille supraconductrice comprenant une cavité et machine électrique associée - Google Patents
Pastille supraconductrice comprenant une cavité et machine électrique associéeInfo
- Publication number
- EP4073916A1 EP4073916A1 EP20841989.5A EP20841989A EP4073916A1 EP 4073916 A1 EP4073916 A1 EP 4073916A1 EP 20841989 A EP20841989 A EP 20841989A EP 4073916 A1 EP4073916 A1 EP 4073916A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- additional
- edge
- wall
- superconducting
- cavity
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
- H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Definitions
- TITLE Superconducting pellet comprising a cavity and associated electrical machine
- the present invention relates to the field of electrical machines comprising superconducting pellets, which can in particular be used in aircraft.
- the invention applies to electrical machines comprising magnetized or non-magnetized pellets, to electrical machines with superconducting magnets or to superconducting flux barriers, to fully superconducting machines (superconducting armature and inductor) or partially superconducting (armature or superconducting inductor) as well as superconducting machines with radial, linear or axial flow.
- a superconducting material is a material which, when cooled to a temperature below its critical temperature, exhibits zero resistivity thus offering the possibility of circulating continuous currents without losses. From this, several phenomena arise from it such as the diamagnetic response to any variation in the magnetic field, allowing excellent magnetic shielding to be achieved.
- an electric machine comprises an inductor and an armature.
- the inductor comprises an HTC coil made with HTC wires which generates a magnetic field modulated by superconducting pellets, which act as magnetic screens.
- the armature for its part, comprises a three-phase copper winding system which rests on a ferromagnetic or non-magnetic support. The rotation of the screens varies the magnetic field and induces, by Lenz's law, an electromotive force in the winding.
- the sizing of such a machine leads to an axial flow structure without a rotating feed system (ring / brush type). Maintenance and safety problems, brought about by a rotating ring / brush system, are therefore avoided.
- This electrical machine is partially superconducting insofar as only the inductor is made of a superconductive material, as opposed to a fully superconducting machine, all of the active parts of which are designed with superconducting materials.
- the term “inductor” will denote the coil HTC and the superconducting pellets configured to modify the magnetic flux created by the coil HTC. It will be noted that, in a superconducting electrical machine with flux barriers, the diamagnetic behavior of the superconducting pellets is used when they are cooled out of field.
- the superconducting pellets are in this case non-magnetized and form a screen (screening) which deflects the field lines when they are immersed in a magnetic field. The magnetic field is then concentrated and of high amplitude between the non-magnetized and weak superconducting pellets downstream thereof.
- the superconducting pellets can be magnetized and form superconducting magnets. We then speak of a machine with superconducting magnets.
- the pellets are made of YBCO (English acronym for Yttrium Barium Copper Oxide for mixed oxides of Barium, Copper and Yttrium), GdBCO (English acronym for Gadolinium-Barium-Copper-Oxygen), and / or NbTi (for niobium-titanium) which in particular have very good screening characteristics.
- YBCO Yttrium Barium Copper Oxide for mixed oxides of Barium, Copper and Yttrium
- GdBCO English acronym for Gadolinium-Barium-Copper-Oxygen
- NbTi for niobium-titanium
- Pellets are generally obtained through the process of germ growth. Reference may be made in particular to the article by M. Morita, H. Teshima, and H. Hirano, “Development of oxide superconductors”, Nippon Steel Technical Report, vol. 93, p. 18-23, 2006 for more details on this process.
- this type of process consists in forming a crystal by gradually adding material to the surface of a pre-existing seed.
- the pellets thus obtained are therefore generally of circular or rectangular shapes.
- the inter-grain connection associated with this manufacturing process tends to decrease the performance of the pellets.
- the distribution of the magnetic flux depends directly on the shape of the screen which opposes (machines with flux barriers) or guides (machine with superconducting magnets) the passage of the flux.
- the circular shape of the superconducting pellets does not make it possible to maximize the torque density of the electric machine or its weight.
- One aim of the invention is to optimize a superconducting machine as a function of its main dimensioning criterion, for example its torque density, its mass or its manufacturing complexity.
- the invention applies to any type of superconducting machine, which includes in particular partially superconducting or fully superconducting machines, with flux barriers or with superconducting magnets, with radial, linear or axial flux.
- a superconducting pellet for a superconducting electrical machine, said superconducting pellet having a circumferential wall, said circumferential wall having:
- the additional wall covers the first edge or is flush with said first edge so as to at least partially cover the cavity, or extends from the internal face at a distance from the first edge and the second edge so as to divide the cavity. in two parts.
- the additional wall covers the first edge or is flush with said first edge so as to at least partially cover the cavity and the superconducting pellet comprises furthermore, a second additional wall covering the second edge or flush with said second edge so as to at least partially close the cavity;
- the additional wall covers the first border and the second additional wall covers the second border;
- the superconducting pellet further comprises at least one additional third wall which extends from the internal face at a distance from the first edge and from the second edge so as to divide the cavity into two parts;
- the additional wall, the second additional wall and the at least one third additional wall have an identical thickness; at least one of the first additional, the second additional wall and the at least one third additional wall comprises a through orifice; at least one of the first additional, the second additional wall and at least one third additional wall is devoid of a through orifice; each of the first additional, the second additional wall and the at least one third additional wall comprises a through orifice;
- the invention provides a method of manufacturing a superconducting chip according to the first aspect, said method comprising the following steps:
- step S3 comprising one of the following sub-steps:
- 533 fix the additional wall against the internal face so as to be flush with the first edge and at least partially cover the cavity.
- step S3 comprises steps S32 and S33 so as to fix both a wall additional on the first edge or against the internal face so as to be flush with the first edge and an additional wall or against the internal face so as to be flush with the second edge in order to at least partially close the cavity; the method further comprises step S32; step S32 is repeated so as to fix several additional walls against the internal face of the circumferential wall, at a distance from the first border and from the second border so as to divide the cavity into several parts; the method further comprises a sub-step of producing a through orifice in all or part of the additional walls; the method further comprises a sub-step of producing a through orifice in the additional wall.
- the invention provides a superconducting electrical machine comprising an inductor comprising at least one superconducting pellet according to the first aspect and an armature.
- the invention provides an aircraft comprising an electric machine according to the third aspect.
- Figure 1 is an exploded and schematic view of an example of an axial flow electric machine according to one embodiment of the invention.
- Figure 2a is a three-dimensional finite element electromagnetic model of a prior art superconducting chip immersed in a fixed amplitude magnetic field, where lines of magnetic flux have been shown.
- Figure 2b shows the three-dimensional finite element electromagnetic model of the superconducting chip of Figure 2a), where magnetic flux isolines have been shown.
- Fig. 3a is a three-dimensional finite element electromagnetic model of a superconducting chip according to the first embodiment immersed in a magnetic field of fixed amplitude, where lines of magnetic flux have been shown.
- FIG. 4 illustrates the variation of the axial component of the induced magnetic field (B Z (T)) as a function of the angular position (rad) of the rotor of the electric machine of FIG. 1, said variation being calculated via a three-dimensional electromagnetic model finite element of an electric machine, when the electric machine comprises the superconducting pellets illustrated in Figures 2a) and 2b) (Solid) or in Figures 3a) and 3b) (Hollow).
- Figures 5a) and 5b) illustrate two elements forming the superconducting chip according to a second embodiment of the invention and shown in Figure 5c).
- Figure 6 is a sectional view of a third embodiment of a superconducting chip according to the invention.
- FIG. 7 is a flowchart of steps of an example of a method of manufacturing superconducting pellets according to one embodiment of the invention.
- Figures 8 and 9 are sectional views of a fourth embodiment of a superconducting chip according to the invention.
- Figure 1 is schematically shown an electric machine 1 with axial flux superconducting flux barriers according to one embodiment of the invention, conventionally comprising a rotating part, or rotor, and a fixed part, or stator.
- the superconducting axial flow electrical machine 1 comprises an armature 2 and an inductor 3.
- the armature 2 comprises an arrangement 4 of non-superconducting electromagnetic coils 5, generally made of copper, defining an axial direction X, a direction circumferential and a radial direction.
- the inductor 3 comprises a superconducting coil 6 coaxial with the arrangement 4 of the electromagnetic coils 5 of the armature 2 and the superconducting pellets 7 arranged in the same plane orthogonal to the axial direction X and radially inside the superconducting coil 6.
- the inductor 3 further comprises a stator yoke comprising an iron ring 8.
- the rotor is formed by the superconducting pellets 7 which are rotated around an axis of rotation extending in the direction.
- axial X The stator is formed by the arrangement 4 of electromagnetic coils 5 and the superconducting coil 6.
- the superconducting pellets 7 are made of a superconducting material and are distributed equidistantly around the axis of rotation, which allows a spatial variation of the electromagnetic field in the air gap.
- the superconducting pellets 7 are non-magnetized.
- the superconducting pellets 7 could be magnetized.
- the pellets are made of YBCO (English acronym for Yttrium Barium Copper Oxide for Mixed Oxides of Barium, Copper and Yttrium), GdBCO (English acronym for Gadolinium-Barium-Copper-Oxygen), and / or NbTi (for niobium-titanium).
- the superconducting coil 6 of the inductor 3 is a static superconducting coil supplied with direct current.
- the electrical machine 1 comprises a yoke 4
- the latter ensures mechanical strength of the electromagnetic coils 5 and guarantees a larger cooling surface.
- inductor 2 is superconducting while armature 3 is non-superconducting.
- a conventional superconducting pellet has, in a manner known per se, the shape of a disc. By their manufacturing process, the discs are solid (solid).
- the invention proposes to adapt the shape of the superconducting pellet 7 to the penetration thickness of the magnetic field in the pellet 7.
- the superconducting pellet 7 comprises a circumferential wall 8, said circumferential wall 8 having:
- the internal face 11 extends radially inside the external face 12.
- the superconducting pellet 7 is therefore hollow in that it has a cavity 13 which, as will be seen in what follows, may open out (figure 5c), through ( Figures 3a) and 3b) or enclosed in the superconducting pellet 7 ( Figure 6).
- the cavity is preferably empty (devoid of material).
- the cavity 13 of the superconducting pellet 7 is dimensioned so as to maximize the power of the variation of the magnetic field during the rotation of the rotor, while minimizing the mass of the superconducting pellets 7 in order to allow a increase in the rotational speed of the rotor.
- the realization of a superconducting pellet 7 with a cavity 13 reduces the mass of the superconducting pellet 7.
- the absence of material at the level of the cavity 13 in the pellet. superconducting 7 can affect the modulation of the magnetic field flux, and therefore the power of the electric motor.
- Figure 2a shows the distribution of the magnetic field lines near a conventional superconducting pellet 7 (solid disk) obtained by a three-dimensional finite element electromagnetic model (H-formulation).
- H-formulation three-dimensional finite element electromagnetic model
- the radius of the conventional superconducting pellet is here 4 cm.
- This conventional superconducting pellet is immersed in a magnetic field of 3 T (Tesla) and has a critical current density of 1000 A / mm 2 . Due to Lenz's law and the properties of superconducting materials, a screening current is developed from the periphery of the superconducting pellet to cancel the internal magnetic field.
- the penetration thickness depends on the strength of the magnetic field in which the superconducting pellet is immersed, as well as on the intrinsic electrical properties of the pellet. It can be noted that, in FIG. 2a), the penetration thickness is greater along the r axis than along the z axis. The penetration thickness along the z axis is therefore proportional to the distance from the center of the conventional superconducting pellet.
- Figure 2a) also highlights how the field lines are deflected by the conventional superconducting chip.
- FIG. 3a shows the distribution of the magnetic field lines near a superconducting pellet 7 in accordance with a first embodiment of the invention, obtained with the same three-dimensional electromagnetic model with finite elements (H-formulation) .
- the cavity 13 of the superconducting pellet 7 is through and opens at both the first edge 9 and the second edge 10.
- the superconducting pellet 7 forms a ring.
- FIGS. 3a) and 3b a portion of the superconducting chip 7 has been omitted in order to allow visualization of the magnetic flux lines and of the magnetic flux isolines within the superconducting chip 7. It will be understood, however, that the superconducting chip 7 forms a complete ring and that the cavity 13 does not open into the external face 12 of the circumferential wall 8.
- FIG. 4 represents the induction for a given electrical machine comprising superconducting pellets 7 conforming to FIGS. 2a) and 2b (full curve) and for this same electrical machine in which the superconducting pellets 7 conforming to the first embodiment of FIGS. 3a) and 3b are used (Hollow curve).
- the presence of the cavity 13 in the superconducting pellets 7 in accordance with the first embodiment of the invention affects the modulation of the magnetic flux.
- the variation of the axial component of the induced magnetic field B Z (T) of the superconducting pellets 7 according to the first embodiment is reduced by 30% compared to the variation of the magnetic field induced with conventional superconducting pellets 7.
- the low penetration thickness along the z axis contributes not insignificantly to the screening of the flow.
- the superconducting pellet 7 further comprises at least one additional wall 16 extending from the internal face 11 of the circumferential wall 8, within the cavity 13.
- the additional wall 16 can be an internal wall placed at a distance from the first edge 9 and from the second edge 10, as illustrated in Figure c), so as to divide the cavity 13 into two parts (of equal or different volume) or as a variant be an outer wall which is flush with the first edge 9 or the second edge 10 and thus at least partially blocks the cavity 13 at the level of one of said edges 9, 10.
- the face of the additional wall 16 which is opposite the cavity 13 extends in the extension of the edge 9, 10 so that it is flush to form a substantially smooth surface.
- This embodiment thus makes it possible to obtain a superconducting pellet 7 with a cavity 13 and the additional wall 16 which forms a screen, which has the effect of increasing the screening of the magnetic flux for Q belonging to [0.4 rad; 0.9 rad] in comparison with a superconducting chip 7 according to the first embodiment.
- the mass of the superconducting pellet according to this second embodiment remains lower than that of the conventional superconducting pellets 7.
- This second embodiment therefore forms a better screening / mass compromise than the first embodiment.
- the superconducting pellet 7 may comprise a first additional wall 16 flush with the first edge 9 and a second additional wall 16 flush with the second edge 10.
- the screening is then substantially comparable to that obtained with a conventional superconducting pellet 7, while reducing its mass.
- the variation of the axial component of the induced magnetic field B Z (T) of the superconducting pellets 7 conforming to this variant embodiment is substantially equal to that of the conventional superconducting pellets 7.
- the mass of the superconducting pellets 7 being reduced, it is possible to increase the speed of rotation of the rotor and therefore to improve the power of the electric motor in comparison with conventional electric motors.
- This variant embodiment therefore forms an even better screening / mass compromise.
- the additional wall 14, 15, 16 has a height h a and a radius r, while the outer face 12 of the superconducting pellet 7 has a height h p and a radius R.
- the thickness of the superconducting pellet, which corresponds to Rr, is also called e p.
- a v Preferably: a p £ 0.25 h p ⁇ e p and a to £ 0.025
- the superconducting pellet 7 further comprises at least one additional wall 14, 15, or external wall 14, 15, attached and fixed to at least one of the first edge 9 and the second border 10.
- This embodiment thus makes it possible to obtain a superconducting pellet 7 with a cavity 13 and at least one external wall 14, 15 which forms a screen, which has the effect of increasing the screening of the magnetic flux for Q belonging to [ 0.4 rad; 0.9 rad] in comparison with a superconducting chip 7 according to the first embodiment.
- the mass of the superconducting pellet according to this second embodiment remains lower than that of the conventional superconducting pellets 7.
- a first external wall 14 is attached and fixed to the first edge 9 and a second external wall 15 is added and fixed to the second edge 10 so as to close the cavity 13.
- the screening obtained by virtue of this superconducting pellet 7 is substantially comparable to that obtained with a conventional superconducting pellet 7, while reducing its mass so that it is possible to increase the rotational speed of the rotor and improve the power of the electric motor.
- the superconducting pellet 7 comprises both a first external wall 14 attached and fixed to (or flush with) the first edge 9, a second external wall 15 added and fixed to (or flush with) the second edge 10 and at least one additional third wall 16, or internal wall 16, extending within the cavity 13 from the internal face 11 at a distance from the first and the second edge 9, 10 in order to divide the cavity 13 into one or more parts.
- the superconducting pellet 7 comprises a single internal wall 16, generally centered between the first and the second external wall 14, 15.
- the cavity 13 is therefore divided into two parts, which are here of equal volume.
- the outer wall 16 could be positioned so as to divide the cavity 13 into two parts of different volume.
- the superconducting pellet 7 can comprise a greater number of internal walls 16 (n) which divide the cavity 13 into n-1 parts, which can be of the same volume or of different volumes.
- n internal walls 16
- FIG. 9 a superconducting pellet 7 comprising three internal walls 16 which are equally distributed between the first and second outer wall 14, 15.
- the cavity 13 is therefore divided here into four parts which are of equal volume.
- the internal walls 16 are symmetrical with respect to the plane of normal vector z (axis of rotation of the superconducting pellet 7).
- the external 14, 15 and internal 16 walls can have the same thickness.
- all or part of the outer 14, 15 and inner (s) 16 walls may comprise a through orifice, preferably coaxial with the circumferential wall 8, so as to further reduce the mass of the superconducting pellet 7.
- This through orifice however reduces the screening of the superconducting pellet 7.
- the first and / or the second external wall 14, 15 comprises a through orifice and all or part of the internal walls 16 can be without a through-hole, which makes it possible to maintain effective screening of the superconducting pellet 7.
- the first external wall 14, the second external wall 15 and at least one of the internal walls 16, for example each internal wall 16, can comprise a through orifice in order to reduce the mass of the superconducting pellet 7: in this case, the internal diameter of the orifice passing through the first and second external walls 14, 15 is preferably less than or equal to that of the internal wall or walls 16 in order to limit the reduction in screening.
- the internal diameter of the through-hole of the first and second outer walls 14, 15 is less than or equal to the internal diameter of the through-hole through the walls. internal. If necessary, the internal diameter of the internal walls 16 can be different. Typically, the further an inner wall 16 is from the outer wall 14 or 15, the larger its diameter.
- the internal diameter of the internal wall 16 located in the middle of the cavity 13 is greater than the internal diameter of the through holes of the internal walls 16 which surround it. .
- This configuration thus makes it possible to improve the screening while reducing the mass of the superconducting pellet 7.
- the internal diameter of all the through orifices can be equal in order to reduce their mass and to simplify their production.
- the superconducting pellets 7 in accordance with the invention are obtained according to a manufacturing process S comprising the production of the circumferential wall 8 by leaving the cavity 13 between the first edge 9, the second edge 10 and the internal face 11.
- the circumferential wall 8 can be obtained conventionally by stacking tapes (or “stack of tapes”).
- the tapes can be pre-cut so as to form a hole in the center and then stacked until the desired thickness is reached for the circumferential wall 8.
- thickness we will understand here the distance between the internal face 11 and the external face. 12 of the circumferential wall 8 along an axis radial to the axis of symmetry of the superconducting pellet 7.
- the circumferential wall 8 is obtained by germ growth.
- the circumferential wall 8 obtained has the shape of a solid disc. It is therefore necessary to machine it in order to form the cavity 13, for example by drilling.
- a superconducting pellet 7 comprising a circumferential wall 8 in which is formed a cavity 13 passing through and emerging from the first edge 9 of the circumferential wall 8 to the second edge 10.
- the method further comprises a step S2 of making at least one additional wall 14, 15, 16.
- the additional wall 14, 15, 16 can be obtained according to any of the conventional manufacturing methods of superconducting pellets 7, for example by growth of seeds or stacking of ribbons. This additional wall 14, 15, 16 can in fact be considered as a conventional superconducting pellet 7.
- the additional wall 14, 15, 16 may include a through orifice.
- the additional wall 14, 15, 16 is then obtained according to the same manufacturing steps described in step S1 as the circumferential wall 8.
- the through orifice can be formed in all or part of the walls 14, 15, 16 and have an identical internal diameter in each wall 14, 15, 16 or different.
- step S3 the additional wall or walls 14, 15, 16 obtained in step S2 are assembled, for example by gluing, with the circumferential wall 8.
- an additional wall 14, 15 16 can: either be fixed against the internal face 11 of the circumferential wall 8, at a distance from the first edge 9 and from the second edge 10 (steps S31), or be attached and fixed to the first edge 9 (step S32). or be fixed against the internal face 11 so as to be flush with the first edge 9 (step S33).
- steps S32 and S33 can be repeated in order to attach and fix a second additional wall 15, 16 on the second edge 10 or so as to be flush with the second edge 10, in order to close the cavity 13.
- the method S includes both steps S31, S32 and S33, step
- S33 can be repeated in order to assemble several internal walls 16 against the internal face 11 of the circumferential wall 8.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Superconductive Dynamoelectric Machines (AREA)
- Aviation & Aerospace Engineering (AREA)
- Details Of Resistors (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1914344A FR3104804B1 (fr) | 2019-12-13 | 2019-12-13 | Pastille supraconductrice comprenant une cavité et machine électrique associée |
| PCT/FR2020/052301 WO2021116575A1 (fr) | 2019-12-13 | 2020-12-07 | Pastille supraconductrice comprenant une cavité et machine électrique associée |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4073916A1 true EP4073916A1 (fr) | 2022-10-19 |
Family
ID=70918496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20841989.5A Pending EP4073916A1 (fr) | 2019-12-13 | 2020-12-07 | Pastille supraconductrice comprenant une cavité et machine électrique associée |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12149150B2 (fr) |
| EP (1) | EP4073916A1 (fr) |
| FR (1) | FR3104804B1 (fr) |
| WO (1) | WO2021116575A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3119042B1 (fr) | 2021-01-21 | 2023-10-27 | Safran | Protection des bobines d'une machine electrique |
| FR3131126B1 (fr) * | 2021-12-17 | 2025-02-07 | Safran | Machine électrique à écrans magnétiques supraconducteurs |
| FR3132591B1 (fr) | 2022-02-08 | 2024-03-22 | Safran | Protection des bobines d’une machine électrique |
| US20240213891A1 (en) * | 2022-11-29 | 2024-06-27 | Lewis Stockton Kinsey | Electrical Current Generation by magnetic field manipulation via the Meissner Effect |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5019239B1 (fr) | 1969-06-09 | 1975-07-04 | ||
| US4960760A (en) * | 1989-08-10 | 1990-10-02 | Howard J. Greenwald | Contactless mass transfer system |
| JPH04282050A (ja) * | 1991-02-26 | 1992-10-07 | Shikoku Sogo Kenkyusho:Kk | 電力貯蔵装置 |
| EP0594851B1 (fr) * | 1992-04-17 | 1995-09-27 | Kabushiki Kaisha Shikoku Sogo Kenkyusho | Appareil d'accumulation de puissance electrique |
| US6981671B1 (en) * | 2001-03-28 | 2006-01-03 | The United States Of America As Represented By The Secretary Of The Air Force | Airframe structure-integrated capacitor |
| EP3249663B1 (fr) * | 2015-01-21 | 2022-04-06 | Nippon Steel Corporation | Aimant massif supraconducteur à base d'oxyde |
| GB2540729B (en) * | 2015-05-01 | 2018-03-21 | Oxford Instruments Nanotechnology Tools Ltd | Superconducting magnet |
| CN106972734A (zh) * | 2017-05-25 | 2017-07-21 | 华北电力大学 | 一种采用跑道形超导片堆叠线圈的超导电机 |
| CN108811479B (zh) * | 2018-06-25 | 2020-03-20 | 扬州安顺电气有限公司 | 一种分体式方形屏蔽罩及其制造方法 |
-
2019
- 2019-12-13 FR FR1914344A patent/FR3104804B1/fr active Active
-
2020
- 2020-12-07 WO PCT/FR2020/052301 patent/WO2021116575A1/fr not_active Ceased
- 2020-12-07 EP EP20841989.5A patent/EP4073916A1/fr active Pending
- 2020-12-07 US US17/784,473 patent/US12149150B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US12149150B2 (en) | 2024-11-19 |
| WO2021116575A1 (fr) | 2021-06-17 |
| FR3104804B1 (fr) | 2023-09-29 |
| US20230037086A1 (en) | 2023-02-02 |
| FR3104804A1 (fr) | 2021-06-18 |
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