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    METHOD AND SYSTEM FOR RESOLVER ALIGNMENT IN ELECTRIC MOTOR SYSTEM
    1.
    发明申请
    METHOD AND SYSTEM FOR RESOLVER ALIGNMENT IN ELECTRIC MOTOR SYSTEM 有权
    电动机系统中的分辨率对准方法与系统

    公开(公告)号：US20080272731A1

    公开(公告)日：2008-11-06

    申请号：US11743709

    申请日：2007-05-03

    申请人： Steven E. Schulz ,  Sean E. Gleason ,  Brian A. Welchko

    发明人： Steven E. Schulz ,  Sean E. Gleason ,  Brian A. Welchko

    IPC分类号： H02P27/04 ,  G05B1/06 ,  G05B11/42

    CPC分类号： H02P21/06 ,  H02P21/14 ,  H02P2203/05

    摘要： Methods and systems are provided for aligning a resolver in an electric motor system. The method includes commanding a d-axis current command and a speed command, operating an electric motor without a load in response to the d-axis current command and the speed command, determining a rotor speed in response to the speed command, and determining an offset of the resolver based on the speed command and the rotor speed when the rotor speed has substantially stabilized.

    摘要翻译： 提供了用于对准电动机系统中的旋转变压器的方法和系统。 该方法包括：命令d轴电流指令和速度指令，响应于d轴电流指令和速度指令，无负载地操作电动机，响应速度指令确定转子速度，并且确定 当转子速度基本上稳定时，基于速度指令和转子速度的旋转变压器的偏移。

    PREDICTION STRATEGY FOR THERMAL MANAGEMENT AND PROTECTION OF POWER ELECTRONIC HARDWARE
    2.
    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 system for initiating operation of an electric motor
    3.
    发明授权
    Method and system for initiating operation of an electric motor 有权
    电动机启动运行的方法和系统

    公开(公告)号：US08319460B2

    公开(公告)日：2012-11-27

    申请号：US12606839

    申请日：2009-10-27

    申请人： Yo Chan Son ,  Jihoon Jang ,  Brian A. Welchko ,  Nitinkumar R. Patel ,  Steven E. Schulz

    发明人： Yo Chan Son ,  Jihoon Jang ,  Brian A. Welchko ,  Nitinkumar R. Patel ,  Steven E. Schulz

    IPC分类号： H02P6/04

    CPC分类号： H02P6/20

    摘要： Methods and systems for controlling an electric motor are provided. The motor includes a plurality of windings. Each winding is coupled to a respective set of first and second switches. The first switch of each set of switches is simultaneously activated. Current flow through the plurality of windings is measured while the first switch of each set of switches is activated. The electric motor is controlled according to a first motor control method if the measured current is below a predetermined threshold. The electric motor is controlled according to a second motor control method if the measured current is above the predetermined threshold.

    摘要翻译： 提供了用于控制电动机的方法和系统。 马达包括多个绕组。 每个绕组耦合到相应的一组第一和第二开关。 每组开关的第一个开关同时被激活。 当每组开关的第一开关被激活时，测量通过多个绕组的电流。 如果测量电流低于预定阈值，则根据第一电动机控制方法来控制电动机。 如果测量的电流高于预定阈值，则根据第二电动机控制方法来控制电动机。

    VEHICULAR ELECTRICAL SYSTEM AND METHOD FOR CONTROLLING AN INVERTER DURING MOTOR DECELERATION
    5.
    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。

    Method and system for controlling a power inverter in electric drives
    6.
    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。

    Method and system for controlling pulse width modulation in a power inverter in electric drives
    9.
    发明授权
    Method and system for controlling pulse width modulation in a power inverter in electric drives 有权
    电力变频器中脉宽调制控制方法及系统

    公开(公告)号：US07679310B2

    公开(公告)日：2010-03-16

    申请号：US11923293

    申请日：2007-10-24

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

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

    IPC分类号： H02P23/00

    CPC分类号： B60L15/08 ,  B60L11/1803 ,  B60L15/007 ,  B60L15/20 ,  B60L2210/42 ,  B60L2240/421 ,  B60L2240/423 ,  H02P27/08 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7241 ,  Y02T10/7275

    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 either a commanded torque of the electric motor being above a first torque level, or a commanded speed of the electric motor being above a first speed level, controlling the power inverter with a discontinuous pulse width modulated (DPWM) signal to generate a modulated voltage waveform for driving the electric motor. Additionally, the embodiments control the power inverter by, responsive to both a commanded torque of the electric motor being below the first torque level, and a commanded speed of the electric motor being below the first speed level, controlling the power inverter with a continuous pulse width modulated (CPWM) signal to generate the modulated voltage waveform for driving the electric 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高于第一转矩水平或电动机的指令速度高于第一速度水平来控制功率逆变器，以不连续脉冲宽度控制功率逆变器 调制（DPWM）信号以产生用于驱动电动机的调制电压波形。 此外，这些实施例通过响应于电动机的指令转矩低于第一转矩水平和电动机的指令速度低于第一速度水平来控制功率逆变器，以连续脉冲 宽度调制（CPWM）信号以产生用于驱动电动机的调制电压波形。