US 12,384,553 B2
Bearing current mitigation for an electric machine embedded in a gas turbine engine
Mohamed Osama, Garching (DE); Bartlomiej Drozd, Otrebusy (PL); and John Russell Yagielski, Scotia, NY (US)
Assigned to General Electric Company, Evendale, OH (US); General Electric Deutschland Holding GmbH, Frankfurt (DE); and General Electric Company Polska Sp. z o.o, Warsaw (PL)
Filed by General Electric Company, Schenectady, NY (US); General Electric Deutschland Holding GmbH, Frankfurt (DE); and General Electric Company Polska Sp. z o.o., Warsaw (PL)
Filed on Jun. 21, 2023, as Appl. No. 18/338,390.
Application 18/338,390 is a continuation of application No. 17/205,028, filed on Mar. 18, 2021, granted, now 11,735,982.
Prior Publication US 2023/0344322 A1, Oct. 26, 2023
Int. Cl. H02K 11/40 (2016.01); F02C 6/20 (2006.01); H02K 7/18 (2006.01); H02K 11/02 (2016.01); H02K 11/21 (2016.01); H02K 24/00 (2006.01); H03H 1/00 (2006.01)
CPC H02K 11/40 (2016.01) [F02C 6/206 (2013.01); H02K 7/1823 (2013.01); H02K 11/02 (2013.01); H02K 11/21 (2016.01); H02K 24/00 (2013.01); H03H 1/0007 (2013.01); F05D 2220/323 (2013.01); F05D 2220/76 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A propulsor, comprising:
a gas turbine engine having a shaft and one or more bearings supporting the shaft;
a rotor hub operatively coupled to the shaft and comprising a hub flange;
an electric machine comprising a stator assembly and a rotor assembly;
a rotor connection member operatively coupled to the rotor assembly of the electric machine and comprising a connection flange; and
an insulated joint for operatively coupling the rotor assembly with the shaft, the insulating joint comprising:
a plurality of insulative layers, at least one of the plurality of insulative layers extending between the hub flange and the connection flange to interrupt common mode electric current from flowing between the rotor assembly and the shaft, wherein the plurality of insulative layers comprise hub-side insulative layers, wherein the hub-side insulative layers comprise an outer layer and an inner layer spaced apart along an axial direction.