公开(公告)号：US20250158553A1

公开(公告)日：2025-05-15

申请号：US18506454

申请日：2023-11-10

Applicant: GM Global Technology Operations LLC

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

IPC: H02P27/08 ,  B60L15/00 ,  B60L50/40 ,  B60R16/033

Abstract: A vehicle system includes a first battery pack connected to a second battery pack via a flying capacitor multi-level inverter. The fling capacitor inverter has multiple inverter legs, with each inverter leg being arranged in a flying capacitor topology. A three phase motor is connected to the inverter. A controller connected to the motor and the inverter. The controller includes a memory storing instructions configured to cause the controller to control the inverter as a direct current (DC)-DC converter such that a circulating current passes through the motor, the first battery pack and the second battery pack.

公开(公告)号：US20250107051A1

公开(公告)日：2025-03-27

申请号：US18474637

申请日：2023-09-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yilun Luo ,  Ronald O. Grover, JR. ,  Sanjeev M. Naik ,  Chandra S. Namuduri ,  Rashmi Prasad ,  Junghoon Kim ,  Peng Peng

IPC: H05K7/20

Abstract: Embodiments of the present disclosure are directed to power module cooling systems. In particular, some embodiments of the present disclosure relate to power module cooling systems with structures to generate three-dimensional swirling and tumbling in liquid coolant flowing within a chamber of the cooling system. Other embodiments may be disclosed or claimed.

公开(公告)号：US20240413777A1

公开(公告)日：2024-12-12

申请号：US18330444

申请日：2023-06-07

Applicant: GM Global Technology Operations LLC

Inventor： Junghoon Kim ,  Muhammad Hussain Alvi ,  Mohammad F. Momen ,  Yilun Luo

IPC: H02P27/06 ,  H02M1/00 ,  H02M7/48

Abstract: An electric motor configuration includes a dual output multilevel inverter. The inverter includes a first and second set of alternating current (AC) phase outputs. The first set of AC phase outputs provide a current, each phase output of the first set of AC phase outputs corresponds to a phase output of the second set of AC phase outputs, and each phase output of the first set of AC phase outputs is offset from the corresponding phase output of the second set of phase outputs by 180 degrees. An electric motor includes a first and second set of antiparallel motor windings. The first set of motor windings is connected to the first set of AC phase outputs and the second set of motor windings are connected to the second set of AC phase outputs. The electric motor includes a mechanical rotation output.

公开(公告)号：US20240234239A1

公开(公告)日：2024-07-11

申请号：US18150406

申请日：2023-01-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Muhammad Hussain Alvi ,  Junghoon Kim ,  Yilun Luo ,  Kevin David Corpetti-Vazquez

IPC: H01L23/373 ,  H01L21/48 ,  H01L23/00 ,  H01L23/473 ,  H01L23/498 ,  H01L25/065 ,  H01L25/07

CPC classification number: H01L23/3735 ,  H01L21/4882 ,  H01L23/473 ,  H01L23/49833 ,  H01L23/49844 ,  H01L24/32 ,  H01L24/48 ,  H01L25/0655 ,  H01L25/072 ,  H01L2224/32225 ,  H01L2224/48225 ,  H01L2924/10161 ,  H01L2924/1203 ,  H01L2924/13055 ,  H01L2924/13091 ,  H01L2924/1432 ,  H01L2924/1433

Abstract: Aspects of the disclosure include a 1.5 sided cooled power module for enhanced cooling and gate connections. An exemplary cooled power module can include an upside direct bond copper (DBC) having a first top copper layer, a first bottom copper layer, and a first dielectric layer between the first top copper layer and the first bottom copper layer. A downside DBC includes a second top copper layer, a second bottom copper layer, and a second dielectric layer between the second top copper layer and the second bottom copper layer. One or more dies are positioned between the upside DBC and the downside DBC. The upside DBC is sized such that a portion of an uppermost surface of the one or more dies remains exposed. Bond wires are placed on the exposed portion of the one or more dies and terminated on the first top copper layer of the upside DBC.

公开(公告)号：US20250150012A1

公开(公告)日：2025-05-08

申请号：US18501261

申请日：2023-11-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H02P27/06 ,  B60L15/00 ,  H05K7/20

Abstract: A multi-phase power inverter for an electric propulsion system includes a plurality of H-type multilevel power converters arranged between a high-voltage DC power supply and an electric machine. Each of the plurality of H-type multilevel power converters is a solid-state integrated circuit (IC) that includes a positive DC power bus, a negative DC power bus, a neutral bus, and a plurality of semiconductor switches disposed in a stacked arrangement. The plurality of semiconductor switches is interconnected via the positive DC power bus, the negative DC power bus, and the neutral bus.

公开(公告)号：US20250140704A1

公开(公告)日：2025-05-01

申请号：US18493947

申请日：2023-10-25

Applicant: GM Global Technology Operations LLC

Inventor： Chandra S. Namuduri ,  Junghoon Kim ,  Rashmi Prasad ,  Yilun Luo

IPC: H01L23/538 ,  H01L23/00 ,  H01L25/07

Abstract: A power module and a multi-level inverter package is disclosed. At least four conductive traces are disposed on a substrate. Each conductive trace includes an insulation board, a gate bus disposed on the insulation board, a kelvin bus disposed on the insulation board, and a semiconductor die operating as a transistor. The semiconductor die including a drain, a gate, and a source. The drain is coupled to the conductive trace. The source is coupled to the kelvin bus and to an electrical connection off of the conductive trace. The gate is coupled to the gate bus.

公开(公告)号：US20250119031A1

公开(公告)日：2025-04-10

申请号：US18483553

申请日：2023-10-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC.

Inventor： Yilun Luo ,  Khorshed Mohammed Alam ,  Muhammad A. Zahid ,  Mazharul Chowdhury ,  Peng Peng ,  Thomas W. Nehl ,  Junghoon Kim

IPC: H02K11/30 ,  H02K1/12 ,  H02K1/22

Abstract: An electric machine with reconfigurable rotor poles. The machine may include a stator including a plurality of stator windings configured for generating a rotating magnetic field (RMF) and a rotor configured for rotating within the stator according to a torque induced by the RMF. The rotor may include a plurality of rotor windings wrapped around a plurality of circumferentially spaced rotor protrusions. The electric machine may include a rotor power transfer circuit operable for reconfiguring electrical excitation of the rotor windings according to a plurality of excitation modes.

公开(公告)号：US20250015742A1

公开(公告)日：2025-01-09

申请号：US18347883

申请日：2023-07-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: H02P27/06 ,  B60L50/60 ,  H02M7/537

Abstract: Multi-switch module packaging for a multilevel inverter is provided. A multilevel inverter is connected to the battery. The multilevel inverter includes three levels, each of the three levels having a first module and a second module. The first module is formed on a first insulating substrate material, and the second module is formed on a second insulating substrate material separate from the first insulating substrate material. The first module includes a first switch coupled to the battery via a positive power rail, a second switch coupled to the battery via a negative power rail, and a third switch coupled to the second module. The second module includes another first switch coupled to the battery, another second switch coupled to the battery, and another third switch coupled to the first module. The first module includes four terminals and the second module includes another four terminals.

公开(公告)号：US12176892B2

公开(公告)日：2024-12-24

申请号：US17957116

申请日：2022-09-30

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Muhammad Hussain Alvi ,  Khorshed Mohammed Alam ,  Yilun Luo ,  Chandra S. Namuduri ,  Suresh Gopalakrishnan ,  Junghoon Kim ,  Mohamed Kamel

IPC: H02P21/22 ,  H02P23/28 ,  H02P27/06 ,  H03K17/04 ,  H03K17/16 ,  H03K17/687

Abstract: A system includes an electronic device including a circuit having a semiconductor switch, and a switching control system operably connected to the semiconductor switch. The switching control system is configured to control a switching speed of the semiconductor switch based on a received voltage by altering at least one of a gate resistance and a gate capacitance of the semiconductor switch.

公开(公告)号：US20240408974A1

公开(公告)日：2024-12-12

申请号：US18332223

申请日：2023-06-09

Applicant: GM Global Technology Operations LLC

Inventor： Muhammad Hussain Alvi ,  Suresh Gopalakrishnan ,  Alireza Fatemi ,  Renato Amorim Torres ,  Chunhao J. Lee ,  Junghoon Kim

IPC: B60L15/20 ,  H02P27/08

Abstract: A motor system includes a rechargeable energy storage system, an alternating current motor, and a power inverter. Multiple efficiency maps may be provided, each representing a specific combination of control parameters and associated settings. The maps relate the motor's operating space (torque and speed) to corresponding efficiency solutions. The combination of control parameters and settings that yields the highest motor system efficiency at an operating point may be determined from the multiple efficiency maps and used in controlling the motor.