Patent ID: 8847445
Filing Date: 2014-09-30
Classification: H02K

Abstract:
1. A rotor for a turbo generator, comprising: a cylindrical rotor shaft that thickens in a center to form a rotor body; a plurality of grooves that are introduced into a cylindrical surface of the rotor body and are spaced apart in a circumferential direction, and extend in a longitudinal direction of the shaft; an excitation winding accommodated in the plurality of grooves; a feeding duct, through which a cooling gas flows and for which space is provided between a bottom of a groove and an end of the excitation winding facing away from the cylindrical surface; a cooling duct which penetrates the excitation winding substantially in a radial direction and connects the feeding duct to a respective outlet in the cylindrical surface of the rotor body; a distribution duct arranged around a central longitudinal axis and extending in a longitudinal direction of the shaft; a respective connecting duct connecting the feeding duct to the distribution duct; and a radial admission duct per distribution duct for feeding the cooling gas, wherein the distribution duct is connected to a surface of the rotor shaft by the radial admission duct, and wherein a conductor bar for enlarging the excitation winding is arranged in the feeding duct, wherein the conductor bar is matched to dimensions of the feeding duct.