Gm Global Technolgoy Operations, Inc.

Azadeh Narimissa

Yilun Luo

Chandra S Namuduri

Suresh Gopalakrishnan

Muhammad Hussain Alvi

Patrick S Portell

William T Ivan

Saranraj Karuppuswami

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.

Electric motor shaft grounding apparatus

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.

Choke device for an electric machine system

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Lake Orion, MI, United States of America

Azadeh Narimissa