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公开(公告)号：US20180050686A1
公开(公告)日：2018-02-22
申请号：US15239010
申请日：2016-08-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Venkata Prasad Atluri , Norman K. Bucknor , Robert S. Conell , Suresh Gopalakrishnan , Lei Hao , Chunhao J. Lee , Derek F. Lahr , Dongxu Li , Shifang Li , Chandra S. Namuduri , Thomas W. Nehl , Avoki M. Omekanda , Bob R. Powell, JR. , Rashmi Prasad , Farzad Samie , Neeraj S. Shidore , Aaron M. Sullivan
IPC: B60W20/40 , B60W10/06 , B60W10/08 , B60W10/30 , B60W20/13 , B60W20/50 , B60K6/26 , B60K6/48 , F02N11/04
CPC classification number: B60W20/40 , B60K6/26 , B60K6/387 , B60K6/48 , B60K2006/268 , B60K2006/4808 , B60K2006/4816 , B60K2006/4825 , B60K2006/4833 , B60W10/06 , B60W10/08 , B60W10/30 , B60W20/13 , B60W20/50 , B60W2510/244 , B60W2720/10 , B60Y2200/92 , B60Y2300/18066 , B60Y2300/18125 , B60Y2300/182 , F02N11/04 , Y02T10/6221 , Y02T10/6252 , Y02T10/6256 , Y02T10/626 , Y02T10/6278 , Y02T10/6286 , Y10S903/906 , Y10S903/93
Abstract: A hybrid vehicle propulsion includes an engine and a first electric machine, where each is configured to selectively provide torque to propel the vehicle. The propulsion system also includes a second electric machine coupled to the engine to provide torque to start the engine from an inactive state. A high-voltage power source is configured to power both of the first electric machine and the second electric machine over a high-voltage bus. The propulsion system further includes a controller programmed to deactivate the engine and propel the vehicle using the first electric machine in response to the vehicle being driven at a steady-state speed for a predetermined duration of time. The controller is also programmed to restart the engine using the second electric machine powered by the high-voltage power source.
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公开(公告)号：US20160105056A1
公开(公告)日：2016-04-14
申请号：US14896994
申请日：2014-06-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Chandra S. Namurdri , Rashmi Prasad
IPC: H02J7/02
CPC classification number: H02J7/025 , B60L11/18 , B60L11/1812 , B60L11/1816 , B60L2210/10 , B60L2210/30 , B60L2210/40 , H02J5/00 , H02J7/02 , Y02T10/7005 , Y02T10/7072 , Y02T10/7216 , Y02T10/7241 , Y02T90/127 , Y02T90/14
Abstract: A charging system for use in providing power for charging a battery. The system includes a first, alternating-current-to-direct-current, stage and a second, direct-current-to-direct-current, stage. The first stage includes a single-phase diode rectifier for rectifying an input alternating-current input voltage, and a power-factor-correcting sub-circuit including a switch. The second stage includes multiple switches. The system further includes a high-frequency capacitor connected between the first stage and the second stage. The system also includes a controller connected to the switches of the first and second stages and configured to control, by way of the switches, timing of boost inductor current passing through the charging system.
Abstract translation: 一种用于提供电池充电的充电系统。 该系统包括第一直流直流电流级和第二级直流电流级。 第一级包括用于整流输入交流输入电压的单相二极管整流器和包括开关的功率因数校正子电路。 第二阶段包括多个开关。 该系统还包括连接在第一级和第二级之间的高频电容器。 该系统还包括连接到第一和第二级的开关的控制器，并且被配置为通过开关来控制通过充电系统的升压电感器电流的定时。
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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
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.
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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.
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25.发明申请公开(公告)号：US20250026208A1
公开(公告)日：2025-01-23
申请号：US18355040
申请日：2023-07-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Rashmi Prasad , Chandra S. Namuduri , Ramadityanand Bhogadi , Sandeep U. Menon , Ananth Padmanabha Rao Vemuri , Aniket P. Kothari
Abstract: A charging box performs a direct current fast charging (DCFC) session of a recipient by a donor, e.g., during a vehicle-to-vehicle (V2V) charging session, and includes a portable housing, disconnect devices connected to a high-voltage (HV) bus to connect/disconnect respective inlet and outlet charging ports to/from the bus, and multiple direct current-to-direct current (DC-DC) converters. A high-voltage-to-high-voltage (HV-HV) converter is connected to the bus. An optional high-voltage-to-low-voltage (HV-LV) converter may be connected to the HV-HV converter. An optional low-voltage (LV) energy storage device is connected to the housing and HV-LV converter. A communication processing unit (CPU) establishes two-way communication between the donor and recipient. A system controller selectively pre-charges the bus, recharge the energy storage device, and selectively command offloading of a DC charging current from the donor, through the HV-HV converter, and to the recipient.
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Patent Agency Ranking
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.
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公开(公告)号：US20240424943A1
公开(公告)日：2024-12-26
申请号：US18339418
申请日：2023-06-22
Applicant: GM Global Technology Operations LLC
Inventor： Rashmi Prasad , Chandra S. Namuduri
Abstract: A charging system of a vehicle includes a first charge port selectively connectable to a battery system of the vehicle, the first charge port configured to receive electrical power from a power source to charge the battery system, and a second charge port selectively connectable to the battery system of the vehicle, the second charge port connected to a bi-directional charger. The charging system also includes a controller configured to connect the battery system to the first charge port and control a first charging operation to charge the battery system, connect the battery system to the second charge port, and control a second charging operation to supply electrical power to charge an external energy storage system.
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公开(公告)号：US12142960B2
公开(公告)日：2024-11-12
申请号：US17839691
申请日：2022-06-14
Applicant: GM Global Technology Operations LLC
Inventor： Mohamed Kamel , Muhammad Hussain Alvi , Alireza Fatemi , Chandra S. Namuduri , Rashmi Prasad
IPC: H02J7/00 , H02J7/14 , H02M1/00 , H02P25/022
Abstract: A method and apparatus for electrical energy transfer between a pair of series connected batteries coupled between positive and negative DC rails of a power inverter operatively connected to a plurality of stator phase windings of a stator winding of a motor may include coupling a midpoint of the pair of series connected batteries to the stator winding of the motor, and controlling the power inverter to operate the power inverter and the stator winding as a switched-mode power converter to charge at least one of the stator phase windings from one of the pair of series connected batteries and to discharge the at least one of the stator phase windings to the other of the pair of series connected batteries.
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公开(公告)号：US12136846B2
公开(公告)日：2024-11-05
申请号：US17743737
申请日：2022-05-13
Applicant: GM Global Technology Operations LLC
Inventor： Rashmi Prasad , Chandra S. Namuduri , Avoki M. Omekanda
Abstract: Electrical energy is transferred between an on-vehicle DC power source and an off-vehicle DC power source by controlling conduction of the phase legs of a power inverter to operatively configure the power inverter and the stator phase windings of a traction motor as a switched-mode power converter including the at least one phase winding and at least one switch of one of the phase legs.
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公开(公告)号：US20240356361A1
公开(公告)日：2024-10-24
申请号：US18304025
申请日：2023-04-20
Applicant: GM Global Technology Operations LLC
Inventor： Dongxu Li , Minh-Khai Nguyen , Avoki M. Omekanda , Chandra S. Namuduri , Rashmi Prasad , Lei Hao
Abstract: An electric vehicle includes a system performing a method of charging a battery of the electric vehicle. The system includes an electrical motor having a rotor and a plurality of windings. The vehicle is turned off to allow the rotor to come to rest at an initial rotor position. The processor controls a current through the motor to rotate the rotor to locate a boundary of an electrical lash region associated with the rotor, determines a selected winding of the plurality of windings having a phase vector located close to the electrical lash region, deactivates the selected winding, controls flow of a first current through the motor with the selected winding deactivated to rotate the rotor towards a direction of the selected winding, and controls flow of a second current from a charging station to the battery through the electric motor with the rotor rotated towards the selected winding.
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