A rotor or a stator for a superconducting electrical machine

摘要

A rotor 1 (or a stator) for a superconducting electrical machine includes a mounting 2 that is maintained at substantially ambient temperature during operation of the electrical machine; a field coil support structure 3 carrying a plurality of superconducting field coils 4 maintained at cryogenic temperatures during operation; and at least one coupling element 5 is used to fix the field coil support structure 3 to the mounting 2, where the at least one coupling element 5 is pre-tensioned during assembly of the rotor or stator. The field coils 4 are preferably formed of high temperature superconducting coils. The field coil support structure 3 may be formed of a substantially cylindrical sleeve formed around the mounting 2 having first and second axial ends.