公开(公告)号：US11802913B2

公开(公告)日：2023-10-31

申请号：US17497297

申请日：2021-10-08

Applicant: GM Global Technology Operations LLC

Inventor： Brian J. Gallert ,  Wei Wang

IPC: G01R31/34 ,  G01R25/00

CPC classification number: G01R31/343 ,  G01R25/00

Abstract: A diagnostic system for a resolve of a motor and a method of diagnosing the resolver. The diagnostic system includes an x-phase winding, a y-phase winding, and a processor. The x-phase winding generates an x-phase voltage and the y-phase winding generates a y-phase voltage. The processor obtains the x-phase voltage and the y-phase voltage, determines an adaptive cosine envelope from the x-phase voltage and an adaptive sine envelope from the y-phase voltage, determines an adaptive magnitude from the adaptive sine envelope and the adaptive cosine envelope, determines a magnitude average based on the adaptive magnitude, determines a fault of the resolver when a ratio of the adaptive magnitude and the magnitude average is greater than a threshold, and transmits a signal based on the fault.

公开(公告)号：US20250121691A1

公开(公告)日：2025-04-17

申请号：US18486585

申请日：2023-10-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Martin E. Rosalik, Jr. ,  Todd M. York ,  Tanvi Nagarale ,  Brent S. Gagas ,  Brian A. Welchko ,  Wei Wang

IPC: B60L3/00 ,  B60L3/12 ,  G01R19/165

Abstract: Vehicles and related systems and monitoring methods are provided for detecting a loss of isolation on one side of a power converter. One method involves monitoring a normalized voltage input to a power conversion module coupled to the electric motor, in response to the normalized voltage exceeding a diagnostic activation threshold, determining a first number of instances of a range between successive extremas of the normalized voltage exceeding a loss of isolation range threshold over a diagnostic window of time, and automatically initiating a remedial action when the first number is greater than a loss of isolation detection threshold.

公开(公告)号：US20230111465A1

公开(公告)日：2023-04-13

申请号：US17497297

申请日：2021-10-08

Applicant: GM Global Technology Operations LLC

Inventor： Brian J. Gallert ,  Wei Wang

IPC: G01R31/34 ,  G01R25/00

Abstract: A diagnostic system for a resolve of a motor and a method of diagnosing the resolver. The diagnostic system includes an x-phase winding, a y-phase winding, and a processor. The x-phase winding generates an x-phase voltage and the y-phase winding generates a y-phase voltage. The processor obtains the x-phase voltage and the y-phase voltage, determines an adaptive cosine envelope from the x-phase voltage and an adaptive sine envelope from the y-phase voltage, determines an adaptive magnitude from the adaptive sine envelope and the adaptive cosine envelope, determines a magnitude average based on the adaptive magnitude, determines a fault of the resolver when a ratio of the adaptive magnitude and the magnitude average is greater than a threshold, and transmits a signal based on the fault.

公开(公告)号：US12122248B2

公开(公告)日：2024-10-22

申请号：US17201536

申请日：2021-03-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Aubrey W. Downs, Jr. ,  Christopher L Jones ,  James M. Faucett ,  Yiran Hu ,  Ruixing Long ,  Brent S. Gagas ,  Wei Wang

IPC: B60L15/36 ,  B60L15/20 ,  B60W50/02 ,  B60W50/029

CPC classification number: B60L15/36 ,  B60L15/2036 ,  B60W50/0205 ,  B60W50/029 ,  B60L2240/12 ,  B60L2240/22 ,  B60L2240/423 ,  B60W2050/0292

Abstract: Presented are control systems for operating dual-independent drive unit (DIDU) powertrains, methods for making/operating such systems, and electric-drive vehicles with fault management and mitigation for DIDU axles. A method of operating a motor vehicle with a DIDU axle includes monitoring first and second drive units (DU) that are independently operable to drive respective road wheels via respective axle shafts of the DIDU axle. A vehicle controller receives an indication of a fault condition in the first DU from a fault sensing module and responsively determines a fault type for the fault condition. The controller ascertains the vehicle's current speed and determines a respective torque limit for each of the DIDU drive units based on the fault type and current vehicle speed. Torque output of the first DU is concomitantly constrained to a first torque limit while torque output of the second DU is constrained to a second torque limit.

公开(公告)号：US20220289044A1

公开(公告)日：2022-09-15

申请号：US17201536

申请日：2021-03-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Aubrey W. Downs, JR. ,  Christopher L. Jones ,  James M. Faucett ,  Yiran Hu ,  Ruixing Long ,  Brent S. Gagas ,  Wei Wang

IPC: B60L15/36 ,  B60L15/20

Abstract: Presented are control systems for operating dual-independent drive unit (DIDU) powertrains, methods for making/operating such systems, and electric-drive vehicles with fault management and mitigation for DIDU axles. A method of operating a motor vehicle with a DIDU axle includes monitoring first and second drive units (DU) that are independently operable to drive respective road wheels via respective axle shafts of the DIDU axle. A vehicle controller receives an indication of a fault condition in the first DU from a fault sensing module and responsively determines a fault type for the fault condition. The controller ascertains the vehicle's current speed and determines a respective torque limit for each of the DIDU drive units based on the fault type and current vehicle speed. Torque output of the first DU is concomitantly constrained to a first torque limit while torque output of the second DU is constrained to a second torque limit.