公开(公告)号：US20240072709A1

公开(公告)日：2024-02-29

申请号：US18087935

申请日：2022-12-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Kerrie M. Spaven ,  Brent S. Gagas ,  Brian J. Gallert ,  Brian A. Welchko

IPC: H02P27/08 ,  H02M1/12 ,  H02M1/14 ,  H02M7/5395

CPC classification number: H02P27/08 ,  H02M1/123 ,  H02M1/143 ,  H02M7/5395

Abstract: The concepts described herein provide a method, apparatus, and system for controlling an inverter by modifying duty cycles of the PWM control signals in a manner that achieves a minimum duration between consecutive switching events in the inverter, which serves to reduce common mode current in the bearing(s) of an attached rotary electric machine. To minimize the effect of additional current and voltage ripple into the system, the minimum switching duration is defined in relation to a modulation index and geometric location near the sector boundaries of the respective inverter voltage space vector diagram.

公开(公告)号：US20230347744A1

公开(公告)日：2023-11-02

申请号：US17731988

申请日：2022-04-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael Duncan Swartz ,  Young Joo Lee ,  Brian J. Gallert ,  Anno Yoo

IPC: B60L3/00 ,  G01P3/44 ,  G01D5/244

CPC classification number: B60L3/0061 ,  G01P3/44 ,  G01D5/24485 ,  B60L2240/12

Abstract: A method and system are contemplated for determining a final speed and position of a motor used in an electric vehicle. The final speed and position is calculated as a function of a sensed position when a resolver of a position system is available and as a function of a sensorless position when the resolver is unavailable.

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.