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    MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS
    1.
    发明申请
    MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS 审中-公开
    电机相绕组故障检测方法及装置

    公开(公告)号：US20110089883A1

    公开(公告)日：2011-04-21

    申请号：US12582733

    申请日：2009-10-21

    申请人： Mohammad N. Anwar ,  S.M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

    发明人： Mohammad N. Anwar ,  S.M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

    IPC分类号： G01R31/06

    CPC分类号： G01R31/343 ,  G01R31/346

    摘要： A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized zero sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.

    摘要翻译： 检测多相电机中的相绕组故障的方法可通过马达控制器执行，并且包括测量机器的反馈信号，包括每个相电流，并产生每相的参考相电压。 该方法包括使用反馈信号和参考相电压来计算预定电压值，并将电压值与相应的阈值进行比较以确定故障。 当电压值超过相应的阈值时，执行控制动作。 电压值是以下中的一个或多个：归一化零序电压与调制指数的比率，每相的RMS电压以及每个相电流的总谐波失真。 一种装置检测故障，并包括如上所述的马达控制器和算法。 该装置可以包括电压逆变器，用于产生用于为机器供电的多相交流输出。

    Motor phase winding fault detection method and apparatus
    2.
    发明授权
    Motor phase winding fault detection method and apparatus 有权
    电机相绕组故障检测方法及装置

    公开(公告)号：US08362732B2

    公开(公告)日：2013-01-29

    申请号：US12698221

    申请日：2010-02-02

    申请人： Mohammad N. Anwar ,  S. M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

    发明人： Mohammad N. Anwar ,  S. M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

    IPC分类号： G01R31/02

    CPC分类号： G01R31/343

    摘要： A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized negative sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.

    摘要翻译： 检测多相电机中的相绕组故障的方法可通过马达控制器执行，并且包括测量机器的反馈信号，包括每个相电流，并产生每相的参考相电压。 该方法包括使用反馈信号和参考相电压来计算预定电压值，并将电压值与相应的阈值进行比较以确定故障。 当电压值超过相应的阈值时，执行控制动作。 电压值是以下中的一个或多个：归一化负序电压与调制指数的比率，每相的RMS电压以及每个相电流的总谐波失真。 一种装置检测故障，并包括如上所述的马达控制器和算法。 该装置可以包括电压逆变器，用于产生用于为机器供电的多相交流输出。

    Method and system for controlling permanent magnet AC machines
    3.
    发明授权
    Method and system for controlling permanent magnet AC machines 有权
    永磁交流电机控制方法及系统

    公开(公告)号：US07622877B2

    公开(公告)日：2009-11-24

    申请号：US11685722

    申请日：2007-03-13

    申请人： Steven E. Schulz ,  Silva Hiti ,  Khwaja M. Rahman

    发明人： Steven E. Schulz ,  Silva Hiti ,  Khwaja M. Rahman

    IPC分类号： H02P7/00

    CPC分类号： H02P21/02 ,  H02P21/0089 ,  H02P21/05

    摘要： Methods and systems are provided for controlling permanent magnet machines under varying loads. The method comprises generating a d-axis voltage command and a q-axis voltage command, producing a modified d-axis current command based on the q-axis voltage command and a d-axis current command, converting the modified d-axis current command to a modified d-axis voltage command, and transmitting the modified d-axis voltage command and the q-axis voltage command to the PM machine. The d-axis voltage command is based on a d-axis current command.

    摘要翻译： 提供了用于在变化的负载下控制永磁体机器的方法和系统。 该方法包括生成d轴电压指令和q轴电压指令，基于q轴电压指令和d轴电流指令产生修正的d轴电流指令，将修正的d轴电流指令 到修改的d轴电压指令，并将修改的d轴电压命令和q轴电压命令发送到PM机。 d轴电压指令基于d轴电流指令。

    MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS
    4.
    发明申请
    MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS 有权
    电机相绕组故障检测方法及装置

    公开(公告)号：US20110187304A1

    公开(公告)日：2011-08-04

    申请号：US12698221

    申请日：2010-02-02

    申请人： Mohammad N. Anwar ,  S.M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

    发明人： Mohammad N. Anwar ,  S.M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

    IPC分类号： G01R31/06

    CPC分类号： G01R31/343

    摘要： A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized negative sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.

    摘要翻译： 检测多相电机中的相绕组故障的方法可通过马达控制器执行，并且包括测量机器的反馈信号，包括每个相电流，并产生每相的参考相电压。 该方法包括使用反馈信号和参考相电压来计算预定电压值，并将电压值与相应的阈值进行比较以确定故障。 当电压值超过相应的阈值时，执行控制动作。 电压值是以下中的一个或多个：归一化负序电压与调制指数的比率，每相的RMS电压以及每个相电流的总谐波失真。 一种装置检测故障，并包括如上所述的马达控制器和算法。 该装置可以包括电压逆变器，用于产生用于为机器供电的多相交流输出。

    METHOD AND SYSTEM FOR CONTROLLING PERMANENT MAGNET AC MACHINES
    5.
    发明申请
    METHOD AND SYSTEM FOR CONTROLLING PERMANENT MAGNET AC MACHINES 有权
    用于控制永磁交流电机的方法和系统

    公开(公告)号：US20080224651A1

    公开(公告)日：2008-09-18

    申请号：US11685722

    申请日：2007-03-13

    申请人： Steven E. Schulz ,  Silva Hiti ,  Khwaja M. Rahman

    发明人： Steven E. Schulz ,  Silva Hiti ,  Khwaja M. Rahman

    IPC分类号： H02P27/00

    CPC分类号： H02P21/02 ,  H02P21/0089 ,  H02P21/05

    摘要： Methods and systems are provided for controlling permanent magnet machines under varying loads. The method comprises generating a d-axis voltage command and a q-axis voltage command, producing a modified d-axis current command based on the q-axis voltage command and a d-axis current command, converting the modified d-axis current command to a modified d-axis voltage command, and transmitting the modified d-axis voltage command and the q-axis voltage command to the PM machine. The d-axis voltage command is based on a d-axis current command.

    摘要翻译： 提供了用于在变化的负载下控制永磁体机器的方法和系统。 该方法包括生成d轴电压指令和q轴电压指令，基于q轴电压指令和d轴电流指令产生修正的d轴电流指令，将修正的d轴电流指令 到修改的d轴电压指令，并将修改的d轴电压命令和q轴电压命令发送到PM机。 d轴电压指令基于d轴电流指令。

    Multiple inverter system with low power bus ripples and method therefor
    6.
    发明授权
    Multiple inverter system with low power bus ripples and method therefor 有权
    具有低功率母线波纹的多逆变器系统及其方法

    公开(公告)号：US06864646B2

    公开(公告)日：2005-03-08

    申请号：US10367201

    申请日：2003-02-14

    申请人： Khwaja M. Rahman ,  Silva Hiti ,  Scott D. Downer ,  Brian Welchko

    发明人： Khwaja M. Rahman ,  Silva Hiti ,  Scott D. Downer ,  Brian Welchko

    IPC分类号： B60L9/18 ,  H02P5/74 ,  H02P23/06 ,  H02P7/68 ,  G05B11/01 ,  G05B19/18 ,  H02P7/74

    CPC分类号： H02P23/06 ,  H02P5/74

    摘要： A multiple inverter system is powered from a common energy source such as a battery. First and second inverters are coupled to the common energy source and drive corresponding motors. First and second controllers provide pulse width modulated signals, modulated with respect to first and second clock signals, respectively, to the respective first and second inverters. A capacitor coupled between a power bus and a ground bus smoothes power bus ripples caused by simultaneous switching. To reduce the size needed for the capacitor, different modulation schemes, such as center based interleaved, and leading and lagging edge coincident, are used when both motors are in the motoring mode or both motors are in the regeneration mode. However, the same modulation scheme is used when one motor is in the motoring mode and the other motor is in the regeneration mode.

    摘要翻译： 多个逆变器系统由诸如电池的公共能量源供电。 第一和第二逆变器耦合到共用能源并驱动相应的电动机。 第一和第二控制器分别将相对于第一和第二时钟信号调制的脉宽调制信号提供给相应的第一和第二反相器。 耦合在电源总线和接地总线之间的电容器平滑了由同时切换引起的电源总线波动。 为了减小电容器所需的尺寸，当两个电动机处于电动模式或者两个电动机都处于再生模式时，使用不同的调制方案，例如基于中心的交错以及前沿和后沿一致。 然而，当一个电机处于电动模式并且另一个电动机处于再生模式时，使用相同的调制方案。

    On-line minimum copper loss control of interior permanent-magnet synchronous machine for automotive applications
    7.
    发明授权
    On-line minimum copper loss control of interior permanent-magnet synchronous machine for automotive applications 有权
    用于汽车应用的内置永磁同步电机的在线最小铜损控制

    公开(公告)号：US07667426B2

    公开(公告)日：2010-02-23

    申请号：US11156019

    申请日：2005-06-17

    申请人： Yu-Seok Jeong ,  Seung Ki Sul ,  Silva Hiti ,  Khwaja M. Rahman ,  Bon-Ho Bae

    发明人： Yu-Seok Jeong ,  Seung Ki Sul ,  Silva Hiti ,  Khwaja M. Rahman ,  Bon-Ho Bae

    IPC分类号： H02P6/00 ,  H02P6/06

    CPC分类号： B60L15/20 ,  B60L11/1803 ,  B60L15/025 ,  B60L2220/14 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/72 ,  Y02T10/7275

    摘要： A system and method for controlling an IPM synchronous machine in a vehicle that calculates an operating trajectory of the machine on-line. The system defines three operating ranges of the machine based on voltage magnitude, where a first operating range is controlled by a current limit of the machine and second and third operating regions are controlled by a voltage limit of the machine. The system calculates d- and q-axis current reference signals in the reference rotor frame for each of the three regions. The system determines which set of current reference signals will be used to control the machine based on the operating region. The third operating region is used during over-modulation of the machine.

    摘要翻译： 一种用于控制车辆中的IPM同步机的系统和方法，所述系统和方法在线计算机器的操作轨迹。 该系统基于电压幅度来定义机器的三个操作范围，其中第一操作范围由机器的电流限制控制，第二和第三操作区域由机器的电压限制来控制。 该系统为三个区域中的每一个计算参考转子框架中的d轴和q轴电流参考信号。 该系统基于操作区域确定将使用哪组当前参考信号来控制机器。 在机器的过调制期间使用第三操作区域。

    Method and system for controlling synchronous motor drive systems
    10.
    发明授权
    Method and system for controlling synchronous motor drive systems 有权
    控制同步电机驱动系统的方法和系统

    公开(公告)号：US07592765B2

    公开(公告)日：2009-09-22

    申请号：US11552580

    申请日：2006-10-25

    申请人： Khwaja M. Rahman ,  Silva Hiti

    发明人： Khwaja M. Rahman ,  Silva Hiti

    IPC分类号： H02P21/00

    CPC分类号： H02P21/22

    摘要： Methods and systems are provided for controlling synchronous machines. The method comprises generating a d-axis current command and a q-axis current command, producing a modified current command from the q-axis current command, converting the d-axis current command to a first voltage command, converting the modified current command to a second voltage command, and supplying the first and second voltage commands to the synchronous machine. The modified current command limits a terminal voltage generated by the permanent magnet machine.

    摘要翻译： 提供了用于控制同步电机的方法和系统。 该方法包括生成d轴电流指令和q轴电流指令，从q轴电流指令产生修正电流指令，将d轴电流指令转换为第一电压指令，将修改后的电流指令转换为 第二电压指令，并将第一和第二电压指令提供给同步电机。 修改的电流指令限制永磁机产生的端电压。