A lightweight superconducting machine suitable for aerospace applications provides a wound-field rotor suspended from a driveshaft by insulating tensile spokes. The resultant reduction in heat transmission allows a cryocooler positioned centrally within the rotor to cool the machine coils through radially conducting straps.

A lightweight superconducting machine suitable for aerospace applications provides a wound-field rotor suspended from a driveshaft by insulating tensile spokes. The resultant reduction in heat transmission allows a cryocooler positioned centrally within the rotor to cool the machine coils through radially conducting straps.

A cryogen-free partially-superconducting electric machine of the wound field synchronous type includes a room temperature semi-slotless stator, a superconducting motor rotor, a gap between the rotor and stator, a torque tube which isolates the cryogenic superconducting motor rotor from a central shaft, bearings, an acoustic cryocooler integrated within the motor rotor and torque tube, a heat exchange, a rotary transformer, a vacuum pump, a vacuum enclosure integrated with the stator, and an eddy current/thermal shield. The electric machine can act as a motor or a generator and produces a high specific power and efficiency.

A cryogen-free partially-superconducting electric machine of the wound field synchronous type includes a room temperature semi-slotless stator, a superconducting motor rotor, a gap between the rotor and stator, a torque tube which isolates the cryogenic superconducting motor rotor from a central shaft, bearings, an acoustic cryocooler integrated within the motor rotor and torque tube, a heat exchange, a rotary transformer, a vacuum pump, a vacuum enclosure integrated with the stator, and an eddy current/thermal shield. The electric machine can act as a motor or a generator and produces a high specific power and efficiency.

A rotor for an electric machine having a central rotor axis is disclosed herein. The rotor includes a rotor carrier and at least one permanent-magnetic, superconducting magnet device mechanically supported by the rotor carrier and having one or more superconducting magnet elements. The respective superconducting magnet element is embedded in an appropriate, assigned radially outer recess of the rotor carrier. The respective superconducting magnet element is formed by at least one strip conductor stack made up of multiple superconducting strip conductors. The respective strip conductor stack is secured in the associated recess by a radially further outer pole cap such that the pole cap holds together the individual strip conductors in the strip conductor stack. An electric machine including a rotor of this type and a method for producing a rotor of this type is also disclosed.

A rotor for an electric machine having a central rotor axis is disclosed herein. The rotor includes a rotor carrier and at least one permanent-magnetic, superconducting magnet device mechanically supported by the rotor carrier and having one or more superconducting magnet elements. The respective superconducting magnet element is embedded in an appropriate, assigned radially outer recess of the rotor carrier. The respective superconducting magnet element is formed by at least one strip conductor stack made up of multiple superconducting strip conductors. The respective strip conductor stack is secured in the associated recess by a radially further outer pole cap such that the pole cap holds together the individual strip conductors in the strip conductor stack. An electric machine including a rotor of this type and a method for producing a rotor of this type is also disclosed.

Provided is an electric generator having a stator, a rotor, a plurality of coils including conductors shaped as a tape, the stator extending axially along a longitudinal axis between a first axial end and a second axial end, the stator including a plurality of slots, the plurality of slots being circumferentially distributed around a longitudinal axis of the stator, each of the coils respectively comprising: two slot portions respectively housed in two slots of the stator, two end-windings axially protruding from stator at the first axial end and a second axial end.

An electric machine including a stator having a fully non-magnetic core and stator windings formed of a non-superconducting transposed conductor to reduce eddy current losses. It further includes a rotor having a fully non-magnetic core and superconducting windings or superconducting magnets which produce a magnetic field for interaction with the stator windings. A cryogenic cooling system is arranged to cool the stator windings to reduce conduction losses in the stator windings.

An electric machine including a stator having a fully non-magnetic core and stator windings formed of a non-superconducting transposed conductor to reduce eddy current losses. It further includes a rotor having a fully non-magnetic core and superconducting windings or superconducting magnets which produce a magnetic field for interaction with the stator windings. A cryogenic cooling system is arranged to cool the stator windings to reduce conduction losses in the stator windings.

An armature is presented. The armature includes an armature winding having a plurality of coils, wherein each coil of the plurality of coils is spaced apart from adjacent coils and comprise includes a first side portion and a second side portion. The armature further includes a first electrically insulating winding enclosure. Furthermore, the armature includes a second electrically insulating winding enclosure disposed at a radial distance from the first electrically insulating winding enclosure, wherein the armature winding is disposed between the first electrically insulating winding enclosure and the second electrically insulating winding enclosure. Moreover, the armature includes an electrically insulating coil side separator disposed between the first side portion and the second side portion of the plurality of coils of the armature winding. A superconducting generator including the armature and a wind turbine having such superconducting generator are also presented.