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公开(公告)号：US20250058662A1
公开(公告)日：2025-02-20
申请号：US18451517
申请日：2023-08-17
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 , 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 diode-clamped multi-level inverter and a processor. A diode-clamped multi-level inverter couples the electric motor to the battery and 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. The processor connects the third AC terminal to the charging station and control at least one of the first set of switches to control a first current through the first AC terminal and the second set of switches to control a second current through the second AC terminal to charge the battery.
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公开(公告)号：US20250050759A1
公开(公告)日：2025-02-13
申请号：US18448376
申请日：2023-08-11
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. The system includes an electric motor couplable to a charging station, a capacitor-clamped multi-level inverter, and a processor. The capacitor-clamped multi-level inverter is couples the electric motor to the battery and 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. The processor connects one of the third AC terminal and a neutral point of the electric motor to the charging station and control at least one of the first set of switches and the second set of switches to charge the battery through the electric motor.
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公开(公告)号：US20250119087A1
公开(公告)日：2025-04-10
申请号：US18481447
申请日：2023-10-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Junghoon Kim , Chandra S. Namuduri , Khorshed Mohammed Alam , Rashmi Prasad , Yilun Luo
Abstract: A motor vehicle includes an AC (alternating current) electric motor having a stator with a plurality of stator windings, a rechargeable source of stored electrical energy, and an inverter coupled to the rechargeable source of stored electrical energy and to the AC electric motor. The system also includes one or more controllers collectively programmed to switch the inverter to provide alternating current propulsive energy from the rechargeable source of stored electrical energy to the plurality of stator windings and, using at least one of the stator windings as a boost inductor, switch the inverter to step up a voltage at a charging input coupled to the inverter to charge the rechargeable source of stored electrical energy.
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14.发明申请公开(公告)号：US20250112577A1
公开(公告)日：2025-04-03
申请号：US18479414
申请日：2023-10-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Khorshed Mohammed Alam , Yilun Luo , Junghoon Kim , Chandra S. Namuduri , Muhammad A. Zahid , Mazharul Chowdhury , Lei Hao , Seyedrasoul Hosseini
IPC: H02P27/06 , B60L50/60 , B60L53/20 , H01R39/08 , H02J7/00 , H02K11/00 , H02K11/33 , H02K15/00 , H02M1/42
Abstract: Presented are separately excited motor (SEM) drive systems, methods for making/using such systems, and vehicles equipped with such systems. A motor drive system includes a rechargeable battery unit and a multilevel power factor correction (PFC) device interposed between and electrically connecting the battery unit and an electric power source. The battery unit and PFC device are electrically connected via a traction inverter module (TIM) device and a multilevel power transfer circuit (PTC) device. The TIM contains multiple pairs of TIM switches, and the PTC device contains multiple PTC switches. An SEM unit contains a rotor assembly, which includes a rotor core bearing a rotor winding, and a stator assembly, which includes a stator core bearing multiple stator windings electromagnetically paired with the rotor winding. Each stator winding is electrically connected to a respective pair of TIM switches, whereas the rotor winding is electrically connected to the PTC switches.
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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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Patent Agency Ranking
16.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：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
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.
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公开(公告)号：US20250119086A1
公开(公告)日：2025-04-10
申请号：US18481438
申请日：2023-10-05
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Junghoon Kim , Chandra S. Namuduri , Yilun Luo
Abstract: A motor vehicle includes a multiphase AC electric motor having a stator wound with a first stator winding set including three phases and a second stator winding set including three phases, the three phases of the first stator winding set and the three phases of the second stator winding set wound oppositely to one another in the stator. Additionally, the motor vehicle includes a source of stored electrical energy and an inverter coupled to the source of stored electrical energy and to the electric motor to provide switched electrical energy to the first stator winding set and the second stator winding set. In addition, the motor vehicle includes a driver configured to simultaneously switch a relatively high side of the inverter to a first phase of the first stator winding set and a relatively low side of the inverter to a corresponding first phase of the second stator winding set.
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公开(公告)号：US20250119034A1
公开(公告)日：2025-04-10
申请号：US18482224
申请日：2023-10-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Mazharul Chowdhury , Muhammad A. Zahid , Alexander Forsyth , Khorshed Mohammed Alam , Yilun Luo , Junghoon Kim
Abstract: A rotor power transfer circuit for an electric machine. The rotor power transfer circuit may include a multiple leaf direct current (DC)-to-DC (DC-DC) converter having a plurality of branches connected in parallel to a source of DC power. The branches may include a plurality of switches operable for selectively controlling DC power transfer therethrough according to a plurality of rotor winding excitations modes. The rotor power transfer circuit may include an electrical interface configured for electrically connecting each branch with one of a one or more rotor windings wrapped around a plurality of circumferentially spaced rotor protrusions of the electric machine.
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