US 12,244,206 B2
Apparatus for isolation and measurement of a rotary electric machine
Alireza Fatemi, Canton, MI (US); and Velmurugan Ayyanar, Pondicherry (IN)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Aug. 30, 2022, as Appl. No. 17/898,672.
Prior Publication US 2024/0072601 A1, Feb. 29, 2024
Int. Cl. H02K 5/15 (2006.01); H02K 5/173 (2006.01); H02K 7/08 (2006.01)
CPC H02K 5/1732 (2013.01) [H02K 5/15 (2013.01); H02K 7/083 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for electrically isolating a rotary electric machine, comprising:
an enclosure for the rotary electric machine, comprising:
a housing supporting a stator of the electric machine, the housing having first and second ends;
first and second end plates attached to the housing and rotatably supporting a rotor at opposite ends with respective first and second bearings, the bearings being isolated from the end plates; and
wherein the first and second bearings are affixed to respective bearing hubs, and wherein each of the first and second bearing hubs is isolated from a respective one of the first and second end plates with a respective isolator pad trapped between and separating the respective bearing hub and the respective one of the first and second end plates.