Rotor assembly for an electric excited synchronous motor (eesm)

Abstract

A rotor assembly for an electric excited synchronous motor (EESM) comprises: a rotor shaft, a rotor core with windings, a first and a second fluid guide element arranged at the ends of the rotor core, wherein the rotor shaft comprises an axial bore and a plurality of radial bores, wherein the rotor core includes a plurality of inlet openings fluidically connected to the radial bores, and axial channels extending axially to first and second outlet openings of the rotor core, wherein the first and second fluid guide elements are fluidically connected to the outlet openings of the rotor core and comprise a fluid structure configured to receive cooling fluid from the rotor core and guide same to escape openings arranged in circumferential direction between two circumferentially adjacent winding ends of the rotor.