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公开(公告)号：US20250112500A1
公开(公告)日：2025-04-03
申请号：US18480085
申请日：2023-10-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Muhammad A. Zahid , Khorshed Mohammed Alam , Mazharul Chowdhury , Junghoon Kim , Yilun Luo
Abstract: A power transfer system may include a rotating magnetic core; a rotating high index core winding within the rotating magnetic core; a stationary high index core winding within the rotating high index core winding; and a stator referenced magnetic core within the stationary high index core winding. The power transfer system may include a rotor rectifier mounting plate, operatively attached to the rotating magnetic core, and/or a first and a second stationary high index core winding; and/or the stationary high index core winding and the stator referenced magnetic core do not rotate and/or the rotor rectifier mounting plate includes rectifiers to convert AC to DC; and/or the rotor rectifier mounting plate is further configured as a heat sink; and/or the rotor rectifier mounting plate is operatively attached to the rotating magnetic core via adhesive; and/or cooling fluid is allowed to pass through the power transfer system.
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22.发明申请公开(公告)号：US20250062676A1
公开(公告)日：2025-02-20
申请号：US18451978
申请日：2023-08-18
Applicant: GM Global Technology Operations LLC
Inventor： Yilun Luo , Muhammad Hussain Alvi , Junghoon Kim , Chandra S. Namuduri , Rashmi Prasad , Khorshed Mohammed Alam , Sanjeev M. Naik
Abstract: A vehicle includes an inverter having a power module. The power module includes a high side bus, a low side bus and an alternating current (AC) output bus. The high side bus includes a first switch, wherein a high side current is configured to flow through the first switch in a first direction. The high side bus is disposed in a plane. The low side bus includes a second switch, wherein a low side current is configured to flow through the second switch in the first direction. The low side bus is parallel to the high side bus. The alternating current (AC) output bus is parallel to the high side bus and the low side bus, wherein an output current flows through the AC output bus in a second direction opposite to the first direction.
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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
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.
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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.
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公开(公告)号：US20250158552A1
公开(公告)日：2025-05-15
申请号：US18506452
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 , B60R16/033 , H02J7/34
Abstract: A vehicle system includes a first battery pack connected to a second battery pack via T-type multi-level inverter. The multi-level inverter has a plurality of inverter legs, with each inverter leg being arranged in a T-type topology. A motor is connected to the multi-level inverter and a controller is connected to the motor and the multi-level inverter. The controller including a memory storing instructions configured to cause the controller to control the multi-level 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.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20250153581A1
公开(公告)日：2025-05-15
申请号：US18506448
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
Abstract: A vehicle system includes a first battery pack connected to a second battery pack via multi-level inverter. A motor is connected to the multi-level inverter. A controller is connected to the motor and the multi-level inverter. The multi-level inverter is a neutral point clamped inverter. The controller includes a memory storing instructions configured to cause the controller to control the multi-level 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.
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公开(公告)号：US20250145010A1
公开(公告)日：2025-05-08
申请号：US18501340
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
Abstract: A multi-phase power inverter for an electric propulsion system includes a plurality of T-type multilevel power converters arranged between a high-voltage direct current (DC) power supply and an electric machine. Each of the plurality of T-type multilevel power converters is a solid-state integrated circuit 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.
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公开(公告)号：US20250145009A1
公开(公告)日：2025-05-08
申请号：US18501296
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
Abstract: A multi-phase power inverter for an electric propulsion system includes a plurality of X-type multilevel power converters arranged between a high-voltage direct current (DC) power supply and an electric machine. Each of the plurality of X-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.
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公开(公告)号：US20250119037A1
公开(公告)日：2025-04-10
申请号：US18480592
申请日：2023-10-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Muhammad A. Zahid , Khorshed Mohammed Alam , Mazharul Chowdhury , Dumitru Puiu
Abstract: A power transfer system for a separately excited machine includes a positive slipring and a negative slipring. One or more positive brushes and one or more negative brushes. A rotor winding attached to rotor laminations and a stator winding attached to stator laminations, such that the stator winding is outside of the rotor winding. The power transfer system may have a hollow shaft. The power transfer system may also have the negative brush and the negative slipring being exterior to the hollow shaft, and one or more position sensors. A shaft ingress separator may be within the hollow shaft and may act as a barrier between wet areas and dry areas. The power transfer system may also include a positive wire and a negative wire, which may be reversed.
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30.发明申请公开(公告)号：US20250119030A1
公开(公告)日：2025-04-10
申请号：US18482212
申请日：2023-10-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Mazharul Chowdhury , Muhammad A. Zahid , Khorshed Mohammed Alam , Suresh Gopalakrishnan , Ajay Mehta , Chandra S. Namuduri
IPC: H02K11/225 , G01D5/20 , H02J50/05 , H02J50/10 , H02K11/042
Abstract: An electric machine includes a rotor assembly having a rotor shaft disposed along a central axis. The electric machine includes an inductive position sensor having a sensor target that is operatively connected to the rotor shaft. The sensor target is fixed relative to the rotor shaft such that the sensor target rotates with the rotor shaft. The electric machine includes a stationary member and a rotating member operatively connected to the rotor shaft. The rotating member is spaced from the stationary member by an air gap. The stationary member and the rotating member are configured to enable non-contact power transfer from the stationary member to the rotating member through the air gap. The non-contact power transfer may be an inductive power transfer or a capacitive power.
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