Abstract: A superconducting motor that includes a rotor, a stator and a motor casing. The motor casing has a common chamber which has been evacuated and includes multiple sealed compartments which have also been evacuated, each sealed compartment enclosing one or more coils of the stator, such that the coil(s) in each sealed compartment is/are thermally insulated by two vacuum layers, a first vacuum layer in the sealed compartment in question and a second vacuum layer in the common chamber. Thus, any particles that could become detached from a failed coil do not damage the thermally insulating barrier of any other coil which would be accommodated in another compartment.

Abstract: A superconducting motor includes a rotor holding permanent magnets and able to rotate about a longitudinal axis, a stator holding windings suitable for being powered in order to generate a magnetic field that rotates the rotor by virtue of the permanent magnets, and a motor housing. The motor housing has a plurality of compartments that are hermetic with respect to each other, each compartment enclosing one or more windings of the stator, each compartment being evacuated in order to form a thermal insulation barrier for the winding or windings enclosed in the compartment in question. As a result, any particles that might detach from a faulty winding do not damage the thermal insulation barrier of any other winding housed in another compartment.

Abstract: A superconducting flux barrier electric machine, including one induced element and one inductor, the inductor including one superconducting induction coil and a rotary portion forming a rotor, and the induced element including one arrangement of electromagnetic coils coaxial with the superconducting induction coil, the rotor comprising superconducting pellets mounted radially inside the superconducting coil on an axis of rotation of the machine, where the electromagnetic coils are made of superconducting material and the induced element and the inductor are arranged in an assembly forming a cooling chamber provided with specific cooling means for the superconducting elements of the induced element and the inductor.

Abstract: A superconducting coil system having a coil of superconducting strips, stacked one against the other and wound so as to form rectilinear sections passing through a first orifice and a second orifice and a winding of at least one turn comprising rectilinear sub-sections passing through each of the two orifices and a heat-exchanger system having, for each orifice, a thermal unit arranged in the orifice and positioned against an edge face of each strip arranged in the same orifice, at least one duct embedded in the thermal unit and having a heat-transfer fluid passing through it, and two radiator plates arranged in the respective orifice and arranged one on each side of the thermal unit and of the strips arranged in the same orifice where each radiator plate is fixed against the thermal unit.

Abstract: A coil system for a motor including a coil formed from strips and including straight sections passing through apertures of the motor, and, for each straight element of the coil passing through the same aperture, a shielding system with at least one first band and at least one second band arranged on either side of the elements, in which the strips are electrically connected to an electrical power source, in which two successive strips in the stack are electrically insulated from each other, and in which each band that is placed next to a strip of the coil is electrically insulated from the strip. With such an arrangement, the losses are reduced.

Abstract: A method for controlling a superconducting electrical supply line that is carried out in a control circuit obtains a piece of information representative of a first electric current in the superconducting electrical supply line, then, when the piece of information representative of a first electric current is greater than or equal to a first predetermined threshold value, generates a current, referred to as the second current, in a superconducting coil arranged in the vicinity of the supply line, the value of the second current being determined on the basis of the piece of information representative of the first current. A control circuit is configured to implement the method. Current limiter functions are reversibly performed by initiating a quench phenomenon in the superconducting electrical supply line.

Abstract: A superconducting motor comprising a rotor, a stator on the outside of the rotor penetrated by an even number of holes, for each pair of holes, a coil comprising a U-shaped base and U-shaped sheets and made from a superconducting material, in which the sheets are fixed to one another and to the base, in which each column of a coil is inserted into one of the holes of the pair of holes.

Abstract: A superconducting rotating machine, including: a stator that has a tubular stator iron core and stator windings wound around the stator iron core and generates a rotating magnetic field; a superconducting rotor having: a superconducting squirrel-cage winding that is held rotatably with the rotating magnetic field of the stator on an inner peripheral side and has one or more rotor bars and end rings each made of a superconducting material; and a rotor iron core that has a plurality of slots to accommodate the rotor bars; a pulse voltage output unit that outputs a pulse voltage to shift the superconducting squirrel-cage winding to a magnetic flux flow state; a drive voltage output unit that applies a drive voltage to the stator windings to rotationally drive the superconducting rotor, wherein the pulse voltage output from the pulse voltage output unit is superimposed on the drive voltage.

Abstract: Disclosed is a rotating electrical machine with axial air gap, comprising two rotors, each provided with superconducting axial magnetic flux barrier elements around an axis of rotation and having, between them, axial magnetic flux passage areas, at least one armature, comprising windings and a superconducting field coil surrounding the elements and the armature and capable of inducing an axial magnetic field. Each armature is positioned between two of the rotors. The superconducting elements of the rotors are coaxial with one another and also the flux passage areas. A first annular cryogenic enclosure encloses the field coil and a second cryogenic enclosure encloses the two rotors and the armature or only one rotor, with a third cryogenic enclosure around the other rotor without the armature.

Abstract: The present invention relates to a superconducting pellet for a superconducting electrical machine, the superconducting pellet having a circumferential wall, the circumferential wall having: a first border, a second border opposite the first border, an inner face connecting the first border to the second border, an outer face opposite the inner face, and a cavity formed between the first border and the second border and defined by the inner face, and an additional wall which covers the first border or is flush with the first border so as to at least partially cover the cavity, or extends from the inner face at a distance from the first border and the second border so as to divide the cavity into two portions.

Abstract: A superconducting rotating machine, including: a stator that has a tubular stator iron core and a stator winding wound around the stator iron core, and that generates a rotating magnetic field, and a superconducting rotor that is rotatably held by the rotating magnetic field of the stator, and that has a superconducting winding including a plurality of coil-shaped spliceless loop members made of a superconducting material, and a rotor iron core including a slot for housing the spliceless loop members.

Abstract: A superconductor current limiting device comprising a leak-tight enclosure having two apertures arranged to allow a circulation of a cryogenic fluid, a superconductor busbar, and an inductor comprising two poles arranged inside the leak-tight enclosure and disposed facing a central part of the superconductor busbar. Each of the two poles of the inductor is electrically connected to a terminal part of the superconductor busbar via a connection link to one of the two poles.

Abstract: A superconducting motor comprising a rotor with permanent magnets that is rotatable about a longitudinal axis, a stator outside the rotor and comprising a non-magnetic support cylinder and a ferromagnetic magnetic cylinder, wherein the support cylinder is passed through by several orifices, wherein, for each orifice, the magnetic cylinder has a cutout facing the orifice, for each pair of orifices, a coil that is made up of a superconducting material and that is wound by being accommodated in the orifices of the pair, and, for each cutout, a cooling system arranged in the cutout for cooling that portion of the coil which is accommodated in the orifice corresponding to the cutout.

Abstract: A superconducting motor stator comprising a cryogenic cooler in the form of a ring inside which are arranged superconducting windings each positioned on a hybrid structure formed from a stack of at least iron elements and of elements made of a material with high thermal conductivity such as special ceramic, for example sapphire, copper, diamond or aluminum.

Abstract: A superconducting rotating machine, including: a stator that has a tubular stator iron core and stator windings wound around the stator iron core and generates a rotating magnetic field; a superconducting rotor having: a superconducting squirrel-cage winding that is held rotatably with the rotating magnetic field of the stator on an inner peripheral side and has one or more rotor bars and end rings each made of a superconducting material; and a rotor iron core that has a plurality of slots to accommodate the rotor bars; a pulse voltage output unit that outputs a pulse voltage to shift the superconducting squirrel-cage winding to a magnetic flux flow state; a drive voltage output unit that applies a drive voltage to the stator windings to rotationally drive the superconducting rotor, wherein the pulse voltage output from the pulse voltage output unit is superimposed on the drive voltage.

Abstract: Disclosed is a rotating electrical machine with axial air gap, comprising two rotors, each provided with superconducting axial magnetic flux barrier elements around an axis of rotation and having, between them, axial magnetic flux passage areas, at least one armature, comprising windings and a superconducting field coil surrounding the elements and the armature and capable of inducing an axial magnetic field. Each armature is positioned between two of the rotors. The superconducting elements of the rotors are coaxial with one another and also the flux passage areas. A first annular cryogenic enclosure encloses the field coil and a second cryogenic enclosure encloses the two rotors and the armature or only one rotor, with a third cryogenic enclosure around the other rotor without the armature.

Abstract: The present invention relates to a superconducting pellet for a superconducting electrical machine, the superconducting pellet having a circumferential wall, the circumferential wall having: a first border, a second border opposite the first border, an inner face connecting the first border to the second border, an outer face opposite the inner face, and a cavity formed between the first border and the second border and defined by the inner face, and an additional wall which covers the first border or is flush with the first border so as to at least partially cover the cavity, or extends from the inner face at a distance from the first border and the second border so as to divide the cavity into two portions.

Abstract: A superconducting flux barrier electric motor, including at least one induced element and at least one conductor, one of the armature or the inductor housing at least one rotor and at least one superconducting induction coil, and the other including at least one arrangement of the electromagnetic coils coaxial with the superconducting induction coil the rotor comprising superconducting pellets mounted radially inside the superconducting coil on an axis of rotation of the motor, where the electromagnetic coils are made of superconducting material and the induced element and the inductor are arranged in an assembly forming a cooling chamber provided with specific cooling means for the superconducting elements of the induced element and the inductor.