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    Method and system for fault protection
    2.
    发明授权
    Method and system for fault protection 有权
    故障保护方法和系统

    公开(公告)号：US09142955B2

    公开(公告)日：2015-09-22

    申请号：US13665809

    申请日：2012-10-31

    Applicant: GM Global Technology Operations LLC

    Inventor： Kon-King M. Wang ,  William T. Ivan ,  Bryan M. Ludwig ,  Kris S. Sevel

    IPC: H02H9/08 ,  H02P27/06 ,  B60K6/00 ,  H02M1/32

    CPC classification number: H02H9/08 ,  B60K6/00 ,  H02M1/32 ,  H02P27/06 ,  Y02T10/62

    Abstract: Systems and methods for a fault protection are provided that can be implemented in a hybrid electric vehicle (HEV) to limit the magnitude of a current that flows when an AC-to-chassis fault (ACF) occurs between an AC connection and the chassis of the HEV. An electric machine having a winding, an inverter sub-module (ISM) having a first switch and a second switch, and fault protection elements (FPEs), coupled to the ISM, are provided. The winding is coupled to the ISM coupled via the AC connection. The FPEs can include, for example, first and second inductances. To limit the magnitude of the current, the current can be passed along a first current path that includes the second inductance when the first switch is closed, and can be passed along a second current path that includes the first inductance when the second switch is closed.

    Abstract translation: 提供了用于故障保护的系统和方法，其可以在混合电动车辆（HEV）中实现，以限制在AC连接和底盘之间发生AC到机箱故障（ACF）时流动的电流的大小 HEV。 提供具有绕组的电机，具有第一开关和第二开关的反相器子模块（ISM）以及耦合到ISM的故障保护元件（FPE）。 绕组耦合到通过AC连接耦合的ISM。 FPE可以包括例如第一和第二电感。 为了限制电流的大小，当第一开关闭合时，电流可以沿着包括第二电感的第一电流通路传递，并且当第二开关闭合时可以沿包括第一电感的第二电流通路通过电流 。

    Online IGBT junction temperature estimation without the use of a dedicated temperature estimation or measurement device
    3.
    发明授权
    Online IGBT junction temperature estimation without the use of a dedicated temperature estimation or measurement device 有权

    公开(公告)号：US10337930B2

    公开(公告)日：2019-07-02

    申请号：US14709782

    申请日：2015-05-12

    Applicant: GM Global Technology Operations LLC

    Inventor： S. M. Nayeem Hasan ,  Bryan M. Ludwig ,  David P. Tasky

    IPC: G01K7/01 ,  H01L29/739 ,  G01K7/42

    Abstract: A number of variations may include a method which may include determining a temperature rise in an IGBT junction without the use of a temperature estimation or measurement device because determination may be made by first determining the power loss due to the conduction losses of the IGBT and power loss associated with switching the IGBT where these losses may be determined by utilizing the saturation voltage of the IGBT, IGBT PWM duty cycle, IGBT switching frequency, fundamental frequency along with a lookup table for the switching energies and the phase current going through the IGBT. The determined power loss may be multiplied by a measured, sensed or obtained thermal impedance from the IGBT junction. Finally, the determined temperature rise of the IGBT junction may be added to a measured, sensed or obtained temperature of the coolant in order to determine the absolute temperature of the IGBT junction.

    ONLINE IGBT JUNCTION TEMPERATURE ESTIMATION WITHOUT THE USE OF A DEDICATED TEMPERATURE ESTIMATION OR MEASUREMENT DEVICE
    5.
    发明申请
    ONLINE IGBT JUNCTION TEMPERATURE ESTIMATION WITHOUT THE USE OF A DEDICATED TEMPERATURE ESTIMATION OR MEASUREMENT DEVICE 审中-公开
    在不使用专用温度估计或测量装置的在线IGBT结温度估计

    公开(公告)号：US20160334280A1

    公开(公告)日：2016-11-17

    申请号：US14709782

    申请日：2015-05-12

    Applicant: GM Global Technology Operations LLC

    Inventor： S.M. Nayeem Hasan ,  Bryan M. Ludwig ,  David P. Tasky

    IPC: G01K7/01 ,  H01L27/06 ,  H01L29/739

    CPC classification number: G01K7/01 ,  G01K7/427 ,  G01K2217/00 ,  H01L29/7397

    Abstract: A number of variations may include a method which may include determining a temperature rise in an IGBT junction without the use of a temperature estimation or measurement device because determination may be made by first determining the power loss due to the conduction losses of the IGBT and power loss associated with switching the IGBT where these losses may be determined by utilizing the saturation voltage of the IGBT, IGBT PWM duty cycle, IGBT switching frequency, fundamental frequency along with a lookup table for the switching energies and the phase current going through the IGBT. The determined power loss may be multiplied by a measured, sensed or obtained thermal impedance from the IGBT junction. Finally, the determined temperature rise of the IGBT junction may be added to a measured, sensed or obtained temperature of the coolant in order to determine the absolute temperature of the IGBT junction.

    Abstract translation: 许多变型可以包括一种方法，其可以包括在不使用温度估计或测量装置的情况下确定IGBT结中的温度升高，因为可以通过首先确定由于IGBT的导通损耗和功率而导致的功率损耗 通过利用IGBT的饱和电压，IGBT PWM占空比，IGBT开关频率，基波频率以及开关能量和通过IGBT的相电流的查找表可以确定这些损耗与IGBT的切换相关的损耗。 所确定的功率损耗可以乘以来自IGBT结的测量，感测或获得的热阻抗。 最后，为了确定IGBT结的绝对温度，可以将确定的IGBT结的温度上升加到测量的，感测的或获得的冷却剂温度上。

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