US 12,483,100 B2
Shaft embedded brush power transfer for separately excited machine power
Muhammad A. Zahid, Troy, MI (US); Khorshed Mohammed Alam, Canton, MI (US); Mazharul Chowdhury, Canton, MI (US); and Dumitru Puiu, Sterling Heights, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Oct. 4, 2023, as Appl. No. 18/480,592.
Prior Publication US 2025/0119037 A1, Apr. 10, 2025
Int. Cl. H02K 13/02 (2006.01); H02K 7/00 (2006.01); H02K 11/21 (2016.01); H02K 13/00 (2006.01)
CPC H02K 13/02 (2013.01) [H02K 7/003 (2013.01); H02K 11/21 (2016.01); H02K 13/003 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power transfer system for a separately excited machine, comprising:
a positive slipring;
a negative slipring;
one or more positive brushes operatively in contact with the positive slipring;
one or more negative brushes operatively in contact with the negative slipring;
a rotor winding attached to rotor laminations, which are exterior to the positive slipring;
a stator winding attached to stator laminations, wherein the stator winding is outside of the rotor winding;
a hollow shaft, wherein the rotor laminations are pressed onto the hollow shaft;
a shaft ingress separator within the hollow shaft.