公开(公告)号：US20240266924A1

公开(公告)日：2024-08-08

申请号：US18164572

申请日：2023-02-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yilun Luo ,  Chandra S. Namuduri ,  Suresh Gopalakrishnan ,  Muhammad H. Alvi ,  Azadeh Narimissa ,  William T. Ivan ,  Saranraj Karuppuswami

IPC: H02K11/02 ,  H02K11/01 ,  H02K11/30

CPC classification number: H02K11/02 ,  H02K11/01 ,  H02K11/30

Abstract: A choke device for an electric machine system is provided. The choke device includes a common-mode choke including a magnetic core configured in cross-section as a geometric shape including a hollow center. The choke device further includes a plurality of electric transmission lines configured for transmitting electrical energy in alternating current, wherein the plurality of electric transmission lines is routed through the hollow center. The geometric shape includes a number of sides based upon a number of the electric transmission lines present and is configured for minimizing or reducing an overall flux length of the magnetic core.

公开(公告)号：US20240429773A1

公开(公告)日：2024-12-26

申请号：US18339822

申请日：2023-06-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yilun Luo ,  John Diemer ,  Jack M. Gayney ,  Patrick S. Portell ,  Sanjeev M. Naik ,  Azadeh Narimissa ,  Mohammad F. Momen

IPC: H02K5/173 ,  H02K7/00 ,  H02K11/40

Abstract: An electric motor including a motor casing, a shaft having an axis of rotation, a first end and a second end, a first main bearing for rotatably supporting the shaft at the first end within the motor casing, a second main bearing for rotatably supporting the shaft at the second end within the motor casing, and a grounding bearing for conducting a bearing current between the shaft and the motor casing.