Abstract: A coupling unit for connection of a generator high-voltage winding and an let bar comprises summary turns of the generator high-voltage winding made up of conducting layers which are insulated conductors connected in the zone of the high-voltage lead-in with the inlet bar (17) and cooling ducts. Summary turns of the generator high-voltage winding are made as concentrically arranged tubes (5,7,9,11,12) connected to one another in the zone of the high-voltage lead-in by means of template tubular elements (16) providing for gradual change over of the tube (5) of the first summary turn into a tube (7) of the second summary turn, of the tube (7) of the second summary turn into a tube (9) of the third summary turn and so on until the tube (9) of the penultimate summary turn becomes the tube (11,12) of the last summary turn of the generator high-voltage winding. Cooling ducts are divided into a central duct (6) and peripheral ducts (15) for cooling.

Abstract: Disclosed is a rotor of a cryogenic electrical machine, comprising a superconducting field winding consisting of flat coils each of which is enclosed in a housing having therein tangential and axial passages, metal partitions disposed between the coils, an electrically insulating material, radial passages communicating the central cavity of the rotor with the tangential passages of the housing, and a bandage embracing the coils separated by said partitions, each housing being made up of a base embraced by the coil, wedges and inserts, radial passages being formed in the bases and wedges of the housings, and the electrically insulating material being made as strips forming passages communicating the radial passages of the bases and wedges.