US 12,224,639 B2
Rotor for an externally excited synchronous machine
Martin Gerngroß, Kinding (DE); and Lars Wetterau, Ingolstadt (DE)
Assigned to AUDI AG, Ingolstadt (DE)
Filed by AUDI AG, Ingolstadt (DE)
Filed on Aug. 25, 2022, as Appl. No. 17/895,856.
Claims priority of application No. 102021122066.1 (DE), filed on Aug. 26, 2021.
Prior Publication US 2023/0063773 A1, Mar. 2, 2023
Int. Cl. H02K 3/52 (2006.01); H02K 3/18 (2006.01)
CPC H02K 3/527 (2013.01) [H02K 3/18 (2013.01); H02K 3/522 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A star disc for a rotor of an externally excited synchronous machine, comprising:
a surface of the star disc that is formed of plastic, in which current busbars are embedded,
the current busbars connecting in electrically conductive manner a pole shoe or a groove of the star disc to an adjacent pole shoe or an adjacent groove of the star disc, and
the current busbars extending to a radially outward free end of a respective pole of the star disc opposite a base end of the pole and including, at their two ends respectively, a contacting element to receive a winding wire protruding from the surface of the star disc.