Patent ID: 8063520
Filing Date: 2011-11-22
Classification: H02K,Y02E

Abstract:
1. An electrical machine, comprising: a rotor having a first shaft on a drive side, a second shaft on a non-drive side, with the first and second shafts being at ambient temperature during operation, a core piece, and a superconducting rotor winding, which is received in the core piece and arranged fixed on the first and second shafts and cooled to a cryogenic temperature during operation, wherein one of the first and second shafts is followed in axial direction by the core piece which in turn is followed in axial direction by the other one of the first and second shafts; and a cooling system for cooling the rotor winding, said cooling system including an equalization pressure container for cooling medium, wherein the equalization pressure container is arranged on at least one of the first and second shafts, wherein the at least one of the first and second shafts has at least one subsection constructed in the form of a hollow shaft with a cutout for the equalization pressure container.