公开(公告)号：US20250038595A1

公开(公告)日：2025-01-30

申请号：US18361289

申请日：2023-07-28

Applicant: GM Global Technology Operations LLC

Inventor： Mazharul Chowdhury ,  Le Chang ,  William Robert Jensen ,  Mohammad F. Momen ,  Alan Del Rio

IPC: H02K1/276 ,  H02K7/00

Abstract: An interior permanent magnet electric machine includes a stator and a rotor. The rotor features a rotor core with slots extending between its opposite ends. These slots contain a segmented magnet assembly, which includes magnet segments of different magnetic materials. The segmented magnet assembly may be divided radially, axially, circumferentially or combinations thereof and may include outer magnet segments made of the first magnetic material and inner magnet segments made of the second magnetic material. Additionally, the segmented magnet assembly includes magnetic poles that are aligned in radial, axial, or circumferential directions.

公开(公告)号：US20250030300A1

公开(公告)日：2025-01-23

申请号：US18355743

申请日：2023-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： William T. Ivan ,  Alireza Fatemi ,  Rajeev Vyas ,  Alan Del Rio ,  Rebecca K. Risko Cattell

IPC: H02K5/08 ,  H02K15/14

Abstract: A multi-phase, multi-pole permanent magnet motor/generator (electric machine) is described, and includes a rotor disposed on a rotor shaft within an annular stator, which may be arranged in a housing with an interposed insulator system. The insulator system is arranged to mitigate and isolate common mode currents in a shaft bearing system by insulating the stator core from an electrical ground return path of an electrical driving source. The electric machine includes a rotor rotatably disposed within a stator, and the stator is secured to the housing with the insulator system interposed therebetween.