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    Active discharging high voltage direct current bus system and method for a vehicle
    1.
    发明授权
    Active discharging high voltage direct current bus system and method for a vehicle 有权

    公开(公告)号：US10554057B1

    公开(公告)日：2020-02-04

    申请号：US16183051

    申请日：2018-11-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Konking Wang ,  Kris Sevel ,  Steven V. Wybo

    IPC: H02J7/00 ,  H02P27/06 ,  B60L3/00 ,  B60K6/26 ,  B60K6/28 ,  B60L50/51 ,  B60L58/10

    Abstract: A discharge control system of a vehicle includes a traction power inverter module (TPIM) configured to convert a first direct current (DC) voltage output by a first battery to alternating current (AC) power and apply the AC power to an electric motor. An accessory power module (APM) is configured to convert the first DC voltage into a second DC voltage of a second battery. A voltage calculation module is configured to, when the first DC voltage is less than an operation threshold voltage of the APM, determine the second DC voltage based on a function of the first DC voltage and the operation threshold voltage. A diagnostic module is configured to indicate whether a discharge fault is present. A discharge control module is configured to, when the discharge fault is present, based the first DC voltage and the second DC voltage, selectively control operation of the TPIM and the APM.

    ELECTRIC POWER DISTRIBUTION SYSTEM AND TOPOLOGY
    2.
    发明申请
    ELECTRIC POWER DISTRIBUTION SYSTEM AND TOPOLOGY 审中-公开

    公开(公告)号：US20180029479A1

    公开(公告)日：2018-02-01

    申请号：US15220721

    申请日：2016-07-27

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Konking Wang ,  Steven V. Wybo ,  Kris S. Sevel ,  Charles J. Swan

    IPC: B60L11/02 ,  H02M3/335 ,  B60L11/18

    CPC classification number: B60L11/02 ,  B60L11/1809 ,  H02M1/32 ,  H02M3/33507 ,  H02M3/33584 ,  H02M2001/322

    Abstract: A topology for electric power distribution in a vehicle includes a high-voltage bus connected to a DC-DC electric power converter that is connected to a low-voltage DC load. The DC-DC electric power converter includes a high-voltage switching circuit, a transformer, and a low-voltage rectifier. The high-voltage switching circuit includes first and second switches arranged in series between positive and negative legs of the high-voltage electric power bus at a first node that connects to a leg of an inductor of the transformer. A controller receives a command to discharge the high-voltage electric power bus, and in response, controls a first gate circuit to operate a first switch in a linear mode, and controls a second gate circuit to operate a second switch in a pulsewidth-modulated mode. A duty cycle for the pulsewidth-modulated operation of the second switch is determined based upon the magnitude of electric current.

    Auxiliary power system and method
    4.
    发明授权
    Auxiliary power system and method 有权

    公开(公告)号：US11904726B2

    公开(公告)日：2024-02-20

    申请号：US17567369

    申请日：2022-01-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Steven V. Wybo ,  Ranya Badawi

    IPC: B60L58/20 ,  B60L53/20

    CPC classification number: B60L58/20 ,  B60L53/20 ,  B60L2210/10

    Abstract: An accessory power system includes an accessory power module having primary power switches, a transformer, and secondary rectifiers. The primary power switches are electrically connected to the high-voltage bus, and the secondary rectifiers are electrically connected to the low-voltage bus. A peak detector is coupled to the high-voltage bus. A controller is in communication with the peak detector circuit, and operatively connected to the primary power switches. The controller dynamically monitors, via the peak detector circuit, a ripple voltage of the high-voltage bus, compares the monitored voltage with a maximum threshold voltage, and disables the plurality of primary power switches when the ripple voltage of the high-voltage bus is greater than the maximum threshold voltage, and reactivates the primary power switches when the ripple voltage of the high-voltage bus is less than the maximum threshold voltage.

    METHOD AND APPARATUS FOR CONTROLLING AN ELECTRIFIED POWERTRAIN SYSTEM OF A VEHICLE
    5.
    发明申请
    METHOD AND APPARATUS FOR CONTROLLING AN ELECTRIFIED POWERTRAIN SYSTEM OF A VEHICLE 有权
    用于控制车辆电动动力系统的方法和装置

    公开(公告)号：US20160250927A1

    公开(公告)日：2016-09-01

    申请号：US14633538

    申请日：2015-02-27

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Konking (Michael) Wang ,  Aniket Kothari ,  William T. Ivan ,  Steven V. Wybo ,  Ying Tan ,  Michael M. Gandham

    IPC: B60L1/00 ,  B60L11/18

    CPC classification number: B60L1/003 ,  B60L3/0061 ,  B60L11/1805 ,  B60L11/1868 ,  B60L2210/10 ,  Y02T10/7005 ,  Y02T10/7216 ,  Y02T10/7241 ,  Y02T10/7275 ,  Y02T90/16

    Abstract: An electrified powertrain system for a vehicle includes an electric machine coupled to a driveline. An inverter controller communicates directly with an auxiliary power module. An ignition module indicates either a key-on state or a key-off state. When the ignition module is in a key-off state, a low-power DC/DC converter generates an output voltage originating on the high-voltage DC bus having a magnitude sufficient to activate the inverter controller. The inverter controller detects a key-off uncontrolled generator (UCG) mode. The inverter controller directly communicates detection of the key-off UCG mode to the auxiliary power module. The inverter controller controls the inverter. The auxiliary power module supplies electric power to operate low-voltage electrically-powered powertrain actuators.

    Abstract translation: 用于车辆的电气化动力系统包括耦合到传动系的电机。 逆变器控制器与辅助电源模块直接通信。 点火模块指示开机状态或钥匙状态。 当点火模块处于关闭状态时，低功率DC / DC转换器产生源自高压DC总线的输出电压，其大小足以激活逆变器控制器。 逆变器控制器检测关闭不受控制的发电机（UCG）模式。 逆变器控制器直接将辅助电源模块的关闭UCG模式检测。 变频器控制器控制变频器。 辅助电源模块提供电力来操作低压电动动力总成执行器。

    AUXILIARY POWER SYSTEM AND METHOD
    7.
    发明公开
    AUXILIARY POWER SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20230211703A1

    公开(公告)日：2023-07-06

    申请号：US17567369

    申请日：2022-01-03

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Steven V. Wybo ,  Ranya Badawi

    IPC: B60L58/20 ,  B60L53/20

    CPC classification number: B60L58/20 ,  B60L53/20 ,  B60L2210/10

    Abstract: An accessory power system includes an accessory power module having primary power switches, a transformer, and secondary rectifiers. The primary power switches are electrically connected to the high-voltage bus, and the secondary rectifiers are electrically connected to the low-voltage bus. A peak detector is coupled to the high-voltage bus. A controller is in communication with the peak detector circuit, and operatively connected to the primary power switches. The controller dynamically monitors, via the peak detector circuit, a ripple voltage of the high-voltage bus, compares the monitored voltage with a maximum threshold voltage, and disables the plurality of primary power switches when the ripple voltage of the high-voltage bus is greater than the maximum threshold voltage, and reactivates the primary power switches when the ripple voltage of the high-voltage bus is less than the maximum threshold voltage.

    Electric power distribution system and topology
    8.
    发明授权
    Electric power distribution system and topology 有权

    公开(公告)号：US10160332B2

    公开(公告)日：2018-12-25

    申请号：US15220721

    申请日：2016-07-27

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Konking Wang ,  Steven V. Wybo ,  Kris S. Sevel ,  Charles J. Swan

    IPC: B60L11/18 ,  H02M1/32 ,  B60L11/02 ,  H02M3/335

    Abstract: A topology for electric power distribution in a vehicle includes a high-voltage bus connected to a DC-DC electric power converter that is connected to a low-voltage DC load. The DC-DC electric power converter includes a high-voltage switching circuit, a transformer, and a low-voltage rectifier. The high-voltage switching circuit includes first and second switches arranged in series between positive and negative legs of the high-voltage electric power bus at a first node that connects to a leg of an inductor of the transformer. A controller receives a command to discharge the high-voltage electric power bus, and in response, controls a first gate circuit to operate a first switch in a linear mode, and controls a second gate circuit to operate a second switch in a pulsewidth-modulated mode. A duty cycle for the pulsewidth-modulated operation of the second switch is determined based upon the magnitude of electric current.

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