公开(公告)号：US20250058661A1

公开(公告)日：2025-02-20

申请号：US18449997

申请日：2023-08-15

Applicant: GM Global Technology Operations LLC

Inventor： Chandra S. Namuduri ,  Muhammad Hussain Alvi ,  Rashmi Prasad ,  Khorshed Mohammed Alam ,  Junghoon Kim ,  Yilun Luo

IPC: B60L53/22 ,  B60L50/60 ,  H02M7/483 ,  H02M7/5387 ,  H02P21/22 ,  H02P27/06

Abstract: A vehicle includes a system for charging a battery of the vehicle. An electric motor couples to a charging station. A T-bridge multi-level inverter couples the electric motor to the battery. The inverter includes a first leg having a first set of switches and a first AC terminal coupled to the electric motor, a second leg having a second set of switches and a second AC terminal coupled to the electric motor and a third leg having a third set of switches and a third AC terminal coupled to the electric motor. A processor connects the third AC terminal to the charging station and controls at least one of the first set of switches to control a first current through the first AC terminal of the first leg and the second set of switches to control a second current through second AC terminal of the second leg.

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：US20250018808A1

公开(公告)日：2025-01-16

申请号：US18352469

申请日：2023-07-14

Applicant: GM Global Technology Operations LLC

Inventor： Muhammad Hussain Alvi ,  Chandra S. Namuduri ,  Junghoon Kim ,  Yilun Luo

IPC: B60L50/51 ,  H02M1/00 ,  H02M7/483 ,  H02M7/487

Abstract: A conversion system includes a conversion device including a multilevel inverter configured to generate two alternating current (AC) output currents, a current sensor configured to sample a current through the multilevel inverter, or from the multilevel inverter, during a switching cycle, and a processor configure to estimate both of the two AC output currents based on the sampled current from the current sensor.