公开(公告)号：US20240022161A1

公开(公告)日：2024-01-18

申请号：US17865482

申请日：2022-07-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hong Nguyen ,  Michael Z. Pieszala ,  Yilun Luo ,  Khorshed Mohammed Alam ,  Sanjeev M. Naik ,  Benjamin S. Ngu

IPC: H02M1/08 ,  H02M7/5395 ,  H03K17/16

CPC classification number: H02M1/08 ,  H02M7/5395 ,  H03K17/16

Abstract: A variable current gate driver for a transistor includes a first current control device having a first controllable output current. The first current control device is electrically connected between a first bus and an activator of the transistor, and a second current control device having a second controllable output current. The second current control device is electrically connected between the activator of the transistor and a second bus. A controller is operatively connected to the first and second current control devices to control the first and second controllable output currents to control the first and second current control devices to control activation of the transistor via the activator. The controller is operative to control the first and second current control devices to control a slew rate of the transistor.

公开(公告)号：US20250136042A1

公开(公告)日：2025-05-01

申请号：US18497652

申请日：2023-10-30

Applicant: GM Global Technology Operations LLC

Inventor： Tyler P. Morris ,  Ryan Aaron Gellner ,  Benjamin S. Ngu ,  Jaclyn Press Sproule ,  Fernando Mercuri

IPC: B60R22/46 ,  B60R21/015 ,  B60R22/36

Abstract: A seatbelt assembly for a vehicle includes a seatbelt and a base retractor coupled to the seatbelt and configured to allow the seatbelt to extend to a desired length. The base retractor includes a first end portion including a biasing device, a second end portion disposed opposite the first end portion and including a speed-based locking mechanism, and a third portion disposed between the first end portion and the second end portion and including a spindle coupled to the seatbelt. The seatbelt assembly also includes a pretensioner coupled to the base retractor and configured to tighten slack of the seatbelt to ensure proper position of the vehicle passenger. Additionally, the seatbelt assembly includes an electromagnet disposed within or adjacent to the base retractor and configured to enable adjustment of rotational resistance applied to the spindle based on vehicle passenger size.

公开(公告)号：US20220103111A1

公开(公告)日：2022-03-31

申请号：US17036805

申请日：2020-09-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Marko Jaksic ,  Brian A. Welchko ,  Benjamin S. Ngu

IPC: H02P27/08 ,  H02M7/5387 ,  H02M1/08

Abstract: A novel power inverter system for transferring electric power between a DC power source and a multi-phase electric machine is described, and includes a power inverter, a Z-source inverter, a first switch, and a second switch. The first switch is arranged between positive and negative conductors of a high-voltage bus that is electrically coupled to the DC power source, and the second switch is arranged in-line on the positive conductor of the high-voltage bus.

公开(公告)号：US12212227B2

公开(公告)日：2025-01-28

申请号：US17865482

申请日：2022-07-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hong Nguyen ,  Michael Z. Pieszala ,  Yilun Luo ,  Khorshed Mohammed Alam ,  Sanjeev M. Naik ,  Benjamin S. Ngu

IPC: H02M1/08 ,  H02M1/00 ,  H02M7/5395 ,  H03K17/04 ,  H03K17/16 ,  H02M7/5387 ,  H03K17/041 ,  H03K17/042

Abstract: A variable current gate driver for a transistor includes a first current control device having a first controllable output current. The first current control device is electrically connected between a first bus and an activator of the transistor, and a second current control device having a second controllable output current. The second current control device is electrically connected between the activator of the transistor and a second bus. A controller is operatively connected to the first and second current control devices to control the first and second controllable output currents to control the first and second current control devices to control activation of the transistor via the activator. The controller is operative to control the first and second current control devices to control a slew rate of the transistor.

公开(公告)号：US11451181B2

公开(公告)日：2022-09-20

申请号：US17036805

申请日：2020-09-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Marko Jaksic ,  Brian A. Welchko ,  Benjamin S. Ngu

IPC: H02P27/08 ,  H02M1/08 ,  H02M7/5387

Abstract: A novel power inverter system for transferring electric power between a DC power source and a multi-phase electric machine is described, and includes a power inverter, a Z-source inverter, a first switch, and a second switch. The first switch is arranged between positive and negative conductors of a high-voltage bus that is electrically coupled to the DC power source, and the second switch is arranged in-line on the positive conductor of the high-voltage bus.