Machine comprising a rotor and a superconducting rotor winding
AssigneeSiemens Aktiengesellschaft
InventorGünter Ries
Life of this patent
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Abstract
A machine has an uncooled rotor body, which is mounted to rotate about a rotational axis, and has a superconducting rotor winding that is located in at least one cryostat and is cooled by a coolant. To facilitate the assembly of the winding and the cryostat, the exterior of the rotor body is provided with flattened sections, which accommodate at least one cryostat. At least one coil of the rotor winding is located in a retaining device that essentially only absorbs tensile stress. Said tensile stress absorption of the retaining device is thus carried out in the flattened sections of the rotor body. HTS material is preferably used for the rotor conductors.
Claims22
A machine comprising:
- a superconducting rotor winding having coils;
- an uncooled rotor body mounted to rotate about a rotation axis, the rotor winding being arranged on the rotor body, the rotor body having outer regions respectively with uncooled flattened parts, the outer regions having a cross section that occupies a portion of an imaginary circle surrounding the rotation axis, with the flattened parts extending along chords of the imaginary circle;
- a cryostat occupying a portion of each outer region;
- and
- a tensile retention holding device provided for each outer region to hold the coil in tension within the cryostat, the holding device absorbing tensile forces acting on the rotor winding during operation of the machine, the entire structure of the holding device extending from one of the flattened parts of the rotor body to the rotor winding and communicating tensile forces to the rotor body through the uncooled flattened parts, the holding device including flexible tensile elements allowing tilting in the direction of the rotor axis to absorb thermal shrinkage of the winding relative to the rotor body.
Dependencies are inferred from the claim text.