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    Method and system for monitoring power electronics controllers in automotive electrical systems
    31.
    发明授权
    Method and system for monitoring power electronics controllers in automotive electrical systems 有权
    用于监控汽车电气系统中电力电子控制器的方法和系统

    公开(公告)号：US08278933B2

    公开(公告)日：2012-10-02

    申请号：US12565982

    申请日：2009-09-24

    申请人： Brian A. Welchko ,  Silva Hiti ,  Abbas Raftari ,  Jeong J. Park ,  Hanne Buur

    发明人： Brian A. Welchko ,  Silva Hiti ,  Abbas Raftari ,  Jeong J. Park ,  Hanne Buur

    IPC分类号： G01R31/00

    CPC分类号： H02P29/02 ,  G05B23/0235

    摘要： Methods and systems are provided for monitoring an automotive electrical system including an inverter having at least one switch. First and second voltage commands corresponding to respective first and second components of a commanded voltage vector on a synchronous frame of reference coordinate system are received. A plurality of duty cycles for operating the at least one switch are calculated based on the first and second voltage commands. First and second actual voltages are calculated based on the plurality of duty cycles. The first and second actual voltages correspond to respective first and second components of an actual voltage vector on the synchronous frame of reference coordinate system. An indication of a fault is generated based on the difference between the first components of the commanded voltage vector and the actual voltage vector and the difference between the second components of the commanded voltage vector and the actual voltage vector.

    摘要翻译： 提供了用于监视包括具有至少一个开关的逆变器的汽车电气系统的方法和系统。 接收对应于参考坐标系同步帧上的指令电压矢量的相应第一和第二分量的第一和第二电压指令。 基于第一和第二电压命令来计算用于操作至少一个开关的多个占空比。 基于多个占空比来计算第一和第二实际电压。 第一和第二实际电压对应于参考坐标系同步帧上的实际电压矢量的相应的第一和第二分量。 基于指令电压矢量的第一分量与实际电压矢量之间的差与指令电压矢量的第二分量与实际电压矢量之差，产生故障指示。

    VEHICULAR ELECTRICAL SYSTEM AND METHOD FOR CONTROLLING AN INVERTER DURING MOTOR DECELERATION
    33.
    发明申请
    VEHICULAR ELECTRICAL SYSTEM AND METHOD FOR CONTROLLING AN INVERTER DURING MOTOR DECELERATION 有权
    在电机减速期间控制逆变器的车辆电气系统和方法

    公开(公告)号：US20110309777A1

    公开(公告)日：2011-12-22

    申请号：US12817950

    申请日：2010-06-17

    申请人： Brian A. Welchko ,  Konstantin S. Majarov ,  Silva Hiti ,  Steven E. Schulz ,  Aniket Kothari ,  Nicholas Kokotovich

    发明人： Brian A. Welchko ,  Konstantin S. Majarov ,  Silva Hiti ,  Steven E. Schulz ,  Aniket Kothari ,  Nicholas Kokotovich

    IPC分类号： H02P3/14

    CPC分类号： B60L7/06 ,  B60L3/04 ,  B60L7/003 ,  B60L7/08 ,  Y02T10/7258

    摘要： Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.

    摘要翻译： 提供了用于操作具有多个高开关的逆变器和耦合到电动机的多个低开关的方法和系统。 检测到表示电动机减速的事件。 逆变器在电动机的减速期间在第一操作模式和第二操作模式之间交替。 在第一操作模式中，多个高开关中的每一个被激活，并且多个低开关中的每一个被去激活，或者多个低开关中的每一个被激活，并且多个高开关中的每一个被去激活。 在第二操作模式中，多个高开关中的每一个被去激活，并且多个低开关中的每一个被去激活。

    Inverter module with thermally separated semiconductor devices
    34.
    发明授权
    Inverter module with thermally separated semiconductor devices 有权
    具有热分离半导体器件的变频器模块

    公开(公告)号：US08054660B2

    公开(公告)日：2011-11-08

    申请号：US12123300

    申请日：2008-05-19

    申请人： Brian A. Welchko

    发明人： Brian A. Welchko

    IPC分类号： H02M7/537

    CPC分类号： H02M7/003 ,  H05K7/1432

    摘要： Systems and apparatus are provided for an inverter module for use in a vehicle. The inverter module comprises a first electrical base and a second electrical base each having an electrically conductive mounting surface, wherein the electrical bases are physically distinct and electrically coupled. A first semiconductor switch has a surface terminal that is coupled to the electrically conductive mounting surface of the first electrical base. A second semiconductor switch has a surface terminal that is coupled to the electrically conductive mounting surface of the first electrical base. A first semiconductor diode and a second semiconductor diode each have a surface terminal, the surface terminals are coupled to the electrically conductive mounting surface of the second electrical base. The first semiconductor switch and first semiconductor diode are antiparallel, and the second semiconductor switch and second semiconductor diode are antiparallel.

    摘要翻译： 提供了用于车辆中的逆变器模块的系统和装置。 逆变器模块包括第一电气基座和每个具有导电安装表面的第二电气基座，其中电气基座在物理上是不同的并且电耦合。 第一半导体开关具有耦合到第一电气基座的导电安装表面的表面端子。 第二半导体开关具有耦合到第一电气基座的导电安装表面的表面端子。 第一半导体二极管和第二半导体二极管各自具有表面端子，表面端子耦合到第二电气基座的导电安装表面。 第一半导体开关和第一半导体二极管是反平行的，并且第二半导体开关和第二半导体二极管是反平行的。

    Method and system for controlling a power inverter in electric drives
    35.
    发明授权
    Method and system for controlling a power inverter in electric drives 有权
    用于控制电力变频器中的电力变换器的方法和系统

    公开(公告)号：US07652443B2

    公开(公告)日：2010-01-26

    申请号：US11923270

    申请日：2007-10-24

    申请人： Steven E. Schulz ,  Stephen T. West ,  Brian A. Welchko ,  Silva Hiti

    发明人： Steven E. Schulz ,  Stephen T. West ,  Brian A. Welchko ,  Silva Hiti

    IPC分类号： H02P7/00

    CPC分类号： B60L15/08 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/526 ,  B60L2270/14 ,  Y02T10/645

    摘要： Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. The various embodiments control the power inverter by, responsive to a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the motor.

    摘要翻译： 提供了一种用于控制汽车电驱动系统中的电力逆变器的方法和系统。 各种实施例通过响应于电动机的指令转矩低于第一转矩水平来控制功率逆变器，控制功率逆变器将功率逆变器的开关频率设定在第一设定频率; 并且响应于所述电动机的所述指令转矩在所述第一转矩水平和第二转矩水平之间，控制所述电力逆变器，以根据所述电动机的指令转矩来确定所述电力逆变器的开关频率，同时保持 开关频率高于动态频率限制。 该方法以较高的指令转矩降低变频器的开关频率，同时保持开关频率高于动态频率限制，从而提供对电机的有效控制。

    PREDICTION STRATEGY FOR THERMAL MANAGEMENT AND PROTECTION OF POWER ELECTRONIC HARDWARE
    36.
    发明申请
    PREDICTION STRATEGY FOR THERMAL MANAGEMENT AND PROTECTION OF POWER ELECTRONIC HARDWARE 有权
    电力电子硬件热管理与保护预测策略

    公开(公告)号：US20090115491A1

    公开(公告)日：2009-05-07

    申请号：US12255728

    申请日：2008-10-22

    申请人： Mohammad N. Anwar ,  Prakash Haribhai Desai ,  Sean E. Gleason ,  Brian A. Welchko

    发明人： Mohammad N. Anwar ,  Prakash Haribhai Desai ,  Sean E. Gleason ,  Brian A. Welchko

    IPC分类号： H03K17/78 ,  H05K7/20

    CPC分类号： B60L3/12 ,  B60W30/1843 ,  B60W30/1846

    摘要： A hybrid powertrain system includes an engine, an electric machine, a power electronics device including a plurality of electric circuit layers, and a cooling system. A method for managing thermal energy in the power electronics device includes monitoring a plurality of temperature sensors in the power electronics device, monitoring electric power into and out of the power electronics device, predicting temperatures for the plurality of electric circuit layers, and controlling the hybrid powertrain system based upon the predicted temperatures for the plurality of electric circuit layers.

    摘要翻译： 混合动力系统包括发动机，电机，包括多个电路层的电力电子设备和冷却系统。 一种用于管理电力电子设备中的热能的方法包括：监测电力电子设备中的多个温度传感器，监测电力进入和流出电力电子设备，预测多个电路层的温度，以及控制混合 基于多个电路层的预测温度的动力系统。

    METHOD AND APPARATUS FOR ACTIVE VOLTAGE CONTROL OF ELECTRIC MOTORS
    37.
    发明申请
    METHOD AND APPARATUS FOR ACTIVE VOLTAGE CONTROL OF ELECTRIC MOTORS 有权
    电动机有功电压控制方法与装置

    公开(公告)号：US20090001915A1

    公开(公告)日：2009-01-01

    申请号：US11769856

    申请日：2007-06-28

    申请人： Brian A. Welchko ,  Keith A. Rodman

    发明人： Brian A. Welchko ,  Keith A. Rodman

    IPC分类号： H02P27/06 ,  H02H7/122

    CPC分类号： H02P27/06

    摘要： Methods and apparatus are provided for dynamic voltage control of electric motors. An inverter provides an output voltage to an electric motor based on a gate voltage. The method includes determining a speed of the electric motor and modifying the gate voltage based on the speed of the electric motor. The apparatus includes a gate drive circuit and a controller coupled to the gate drive circuit. The gate drive circuit provides a gate voltage to a switch network, and the switch network produces the output voltage in response to the gate voltage. The controller modifies the gate voltage based on a speed of the electric motor.

    摘要翻译： 提供了用于电动机的动态电压控制的方法和装置。 逆变器基于栅极电压向电动机提供输出电压。 该方法包括确定电动机的速度并基于电动机的速度来改变门电压。 该装置包括栅极驱动电路和耦合到栅极驱动电路的控制器。 栅极驱动电路向开关网络提供栅极电压，并且开关网络响应于栅极电压产生输出电压。 控制器基于电动机的速度修改栅极电压。

    Systems and methods for monitoring current in an electric motor
    39.
    发明授权
    Systems and methods for monitoring current in an electric motor 有权
    用于监测电动机电流的系统和方法

    公开(公告)号：US08339084B2

    公开(公告)日：2012-12-25

    申请号：US12723136

    申请日：2010-03-12

    申请人： Brian A. Welchko

    发明人： Brian A. Welchko

    IPC分类号： G05B5/00

    CPC分类号： H02P29/0241 ,  H02M7/53873

    摘要： Systems and methods are provided for monitoring current in an electric motor. An electrical system comprises a direct current (DC) interface, an electric motor, and an inverter module between the DC interface and the electric motor. A first current sensor is configured to measure a DC current flowing between the DC interface and the inverter module. A second current sensor is configured to measure a first phase current flowing through the first phase of the electric motor. A control module is coupled to the current sensors, and the control module is configured to determine an expected value for the first phase current based at least in part on the DC current measured by the first current sensor and take remedial action based on a difference between the expected value and the measured first phase current.

    摘要翻译： 提供了用于监视电动机中的电流的系统和方法。 电气系统包括直流（DC）接口，电动机以及DC接口和电动机之间的逆变器模块。 第一电流传感器被配置为测量在DC接口和逆变器模块之间流动的直流电流。 第二电流传感器被配置为测量流过电动机的第一相的第一相电流。 控制模块耦合到电流传感器，并且控制模块被配置为至少部分地基于由第一电流传感器测量的DC电流来确定第一相电流的期望值，并基于第一相电流的差异来采取补救动作 预期值和测量的第一相电流。