公开(公告)号：US20240388156A1

公开(公告)日：2024-11-21

申请号：US18320449

申请日：2023-05-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Peng Peng ,  Lei Hao ,  Suresh Gopalakrishnan ,  Renato Amorim Torres ,  Thomas W. Nehl

IPC: H02K3/28 ,  B60L53/16 ,  B60L53/22 ,  H02P25/22 ,  H02P27/06

Abstract: Embodiments include an electric motor having asymmetric-turn windings and a vehicle including the same. The electric motor includes a rotor and a stator having a first set of windings having a first number of turns and a second set of windings having a second number of turns that is different than the first number of turns. The first set of windings are galvanically isolated from the second set of windings.

公开(公告)号：US20240380342A1

公开(公告)日：2024-11-14

申请号：US18313616

申请日：2023-05-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： William Robert Jensen ,  Mazharul Chowdhury ,  Suresh Gopalakrishnan ,  Lei Hao ,  Peng Peng

IPC: H02P6/10

Abstract: Techniques are provided for torque ripple mitigation. In one embodiment, the techniques involve determining a first torque ripple at a torque output of a target electrical machine, upon determining that the first torque ripple exceeds a threshold, reproducing the torque output based on a pair of gamma control sets, determining a second torque ripple at the reproduced torque output, upon determining that the second torque ripple falls below the threshold, generating qualified gamma controls based on the gamma control sets, and supplying the qualified gamma controls to the target electrical machine.

公开(公告)号：US20240348126A1

公开(公告)日：2024-10-17

申请号：US18298724

申请日：2023-04-11

Applicant: GM Global Technology Operations LLC

Inventor： Farzad Samie ,  Peng Peng ,  Xiaofeng Yang ,  Derek Frei Lahr

IPC: H02K9/00 ,  H05K7/20

CPC classification number: H02K9/00 ,  H05K7/20845

Abstract: A vehicle, system, and method of operating a motor of the vehicle. The motor includes a stator and a rotor. A motor controller controls a motor torque of the motor. A sensor measures a motor speed. A rotor temperature sensor measures a temperature of the rotor. A stator temperature sensor measures a temperature of the stator. A processor determines a stator heat loss at the stator based on the motor torque, the motor speed, and the stator temperature, determines a rotor heat loss at the rotor based on the motor torque, the motor speed, and the rotor temperature, and controls flow of a stator coolant stream through the stator at a stator coolant flow rate based on the stator heat loss and a rotor coolant stream through the rotor at a rotor coolant flow rate based on the rotor heat loss.

公开(公告)号：US20240253517A1

公开(公告)日：2024-08-01

申请号：US18160197

申请日：2023-01-26

Applicant: GM Global Technology Operations LLC

Inventor： Lei Hao ,  Suresh Gopalakrishnan ,  Peng Peng ,  Dongxu Li ,  Chandra S. Namuduri ,  Muhammad Hussain Alvi

IPC: B60L55/00 ,  B60L15/00 ,  H02J3/32 ,  H02M7/00

CPC classification number: B60L55/00 ,  B60L15/007 ,  H02J3/322 ,  H02M7/003

Abstract: An electric vehicle includes a drive system which operates a method of transferring power between the vehicle and an external power grid. The drive system includes a battery, a rectifier, and a processor. The processor is configured to connect the rectifier between an alternating current (AC) port of an outlet of an external power grid and the battery, the rectifier configured to convert between an AC power at the AC port on a grid side of the rectifier and a direct current (DC) power at a vehicle side of the rectifier in order to transfer power bi-directionally between the external power grid and the battery.

公开(公告)号：US20240235328A1

公开(公告)日：2024-07-11

申请号：US18151504

申请日：2023-01-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Farzad Samie ,  Peng Peng ,  Xiaofeng Yang ,  Alireza Fatemi

IPC: H02K9/19 ,  B60K11/02

CPC classification number: H02K9/19 ,  B60K11/02

Abstract: Embodiments include a system for cooling an electric motor and a vehicle including the same. The system for cooling the electric motor includes a pump configured to circulate a conductive cooling fluid through one or more portions of the electric motor and a heat exchanger configured to receive and cool the conductive cooling fluid received from the electric motor.