公开(公告)号：US20250119029A1

公开(公告)日：2025-04-10

申请号：US18480655

申请日：2023-10-04

Applicant: GM Global Technology Operations LLC

Inventor： Suresh Gopalakrishnan ,  Craig S. Ross ,  Chandra S. Namuduri ,  Chunhao J. Lee ,  Thomas W. Nehl ,  Yulei Chen

IPC: H02K11/215

Abstract: An electric drive unit includes a housing and a rotor rotatably supported in the housing. The rotor includes a rotor shaft defining a rotor axis and a plurality of rotor laminations fixedly mounted to the shaft. The plurality of rotor laminations support a plurality of magnetic poles, and a hydraulic unit connected to the plurality of rotor laminations. The hydraulic unit has a magnetic shunt that is selectively shiftable relative to the plurality of magnetic poles. A position sensing system is operable to detect a rotational speed of the rotor and a position of the magnetic shunt relative to the plurality of magnetic poles. The position sensing system includes a rotor shaft position trigger coupled for rotation with the rotor shaft, and a magnetic shunt position trigger supported by the hydraulic unit.