US 11,757,319 B2
Star disk for a rotor of an externally excited synchronous machine
Philipp Uhlmann, Ingolstadt (DE); Patrick Herrmann, Pfaffenhofen a.d. Ilm (DE); and Martin GERNGROß, Kinding (DE)
Assigned to Audi AG, Ingolstadt (DE)
Filed by AUDI AG, Ingolstadt (DE)
Filed on May 14, 2021, as Appl. No. 17/321,086.
Claims priority of application No. 102020113209.3 (DE), filed on May 15, 2020.
Prior Publication US 2021/0359561 A1, Nov. 18, 2021
Int. Cl. H02K 3/28 (2006.01); H02K 3/51 (2006.01); H02K 1/28 (2006.01); H02K 15/09 (2006.01)
CPC H02K 1/28 (2013.01) [H02K 3/28 (2013.01); H02K 3/51 (2013.01); H02K 15/09 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A star disk for a rotor of an externally-excited synchronous machine, comprising:
a central disk body, from which multiple webs extend radially;
a respective end plate provided at an end of each web;
a respective winding groove between the disk body and each end plate;
each winding groove being bounded by the respective web forming a groove bottom and laterally by the disk body and the respective end plate, forming groove flanks;
each winding groove serving to contain a respective conductor winding led around the web and formed from a conductor wire which is wound in multiple layers, wherein the web is provided with flutes running in the winding direction and serving to contain a respective conductor wire segment; and
wherein at least one additional flute is provided on one of the groove flanks and the at least one additional flute is provided at a height of a next layer of the conductor winding.