ROTOR HAVING A SUPERCONDUCTING ROTOR WINDING AND AN INTEGRAL SLEEVE SURROUNDING THE ROTOR WINDING

摘要

A rotor (3) for an electrical machine (1), in particular a synchronous machine (1) has a rotor axis (6) which defines a rotor shaft (4). The rotor (3) has a winding support (7) which is arranged on the rotor shaft (4) such that they rotate together, in such a way that it surrounds the rotor shaft (4) in a centre section (8) with respect to the rotor axis (6). The winding support (7) is fitted with a superconducting rotor winding (9). The rotor (3) has a sleeve (10) which at least radially surrounds the winding support (7) and the rotor winding (9) with respect to the rotor axis (6). At least in the area (10'),in which it radially surrounds the winding support (7) and the superconducting rotor winding (9), the sleeve (10) is formed integrally from a metal alloy, which is non-magnetic, has an electrical conductivity of at least 60% of the electrical conductivity of copper at 20°C, has a mechanical tensile strength of at least 250 N/mm2 at 200°C and has a 0, 2% proof stress of at least 200 N/mm2 at 200°C.