-
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
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：US20250007440A1
公开(公告)日：2025-01-02
申请号：US18342248
申请日：2023-06-27
Applicant: GM Global Technology Operations LLC
Inventor： Muhammad Hussain Alvi , Yilun Luo , Brian A Welchko , Suresh Gopalakrishnan
Abstract: A system includes an inverter configured to output multiphase alternating current (AC) currents to an electric motor, the multiphase AC currents including a first phase current and a second phase current, the inverter including a set of switches for each phase current. The system also includes a switching controller operably connected to each set of switches, the switching controller configured to control a gate driver connected to a switch of the set of switches, the switching controller configured to determine a time difference between a first switching event of a first phase and a second switching event of a second phase during a switching cycle, and control a switching speed of the switch based on the time difference.
-
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
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：US20240266924A1
公开(公告)日：2024-08-08
申请号：US18164572
申请日：2023-02-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yilun Luo , Chandra S. Namuduri , Suresh Gopalakrishnan , Muhammad H. Alvi , Azadeh Narimissa , William T. Ivan , Saranraj Karuppuswami
Abstract: A choke device for an electric machine system is provided. The choke device includes a common-mode choke including a magnetic core configured in cross-section as a geometric shape including a hollow center. The choke device further includes a plurality of electric transmission lines configured for transmitting electrical energy in alternating current, wherein the plurality of electric transmission lines is routed through the hollow center. The geometric shape includes a number of sides based upon a number of the electric transmission lines present and is configured for minimizing or reducing an overall flux length of the magnetic core.
-
公开(公告)号：US20240022946A1
公开(公告)日：2024-01-18
申请号：US18476738
申请日：2023-09-28
Applicant: GM Global Technology Operations LLC
Inventor： Yilun Luo , Khorshed Mohammed Alam , Eric B. Gach , Hong Nguyen , Chandra S. Namuduri , Rashmi Prasad , Junghoon Kim
IPC: H04W28/02 , H04W8/24 , H04W28/086
CPC classification number: H04W28/0205 , H04W28/0215 , H04W8/245 , H04W28/086
Abstract: A slew rate controllable system for powering an electric machine. The system may include a plurality of power transistors operable for converting a direct current (DC) input into an alternating current (AC) output suitable for electrically powering the electric machine. The system may further include a gate drive system operable for controlling a slew rate associated with transitioning the power transistors between the opened and closed states.
-
Patent Agency Ranking
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.
-
27.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.
-
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.
-
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.
-
公开(公告)号：US20250112580A1
公开(公告)日：2025-04-03
申请号：US18476723
申请日：2023-09-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yilun Luo , Khorshed Mohammed Alam , Eric B. Gach , Chandra S. Namuduri , Rashmi Prasad , Mohammad F. Momen
IPC: H02P27/08 , B60L15/00 , H02M1/08 , H02M7/5395
Abstract: A slew rate controllable system for powering an electric machine. The system may include a plurality of power switches operable for converting a direct current (DC) input into an alternating current (AC) output suitable for electrically powering the electric machine. The system may include a gate drive system operable for controlling a slew rate associated with transitioning the switches between opened and closed states.
-
-
-
-
-
-
-
-
-
Search Results
43
records
(took 0.017 seconds)
