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    • 1. 发明申请
    • MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS
    • 电机相绕组故障检测方法及装置
    • US20110089883A1
    • 2011-04-21
    • US12582733
    • 2009-10-21
    • Mohammad N. AnwarS.M. N. HasanKhwaja M. RahmanSilva HitiSteven E. SchulzSean E. Gleason
    • Mohammad N. AnwarS.M. N. HasanKhwaja M. RahmanSilva HitiSteven E. SchulzSean E. Gleason
    • G01R31/06
    • G01R31/343G01R31/346
    • 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.
    • 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。
    • 2. 发明申请
    • MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS
    • 电机相绕组故障检测方法及装置
    • US20110187304A1
    • 2011-08-04
    • US12698221
    • 2010-02-02
    • Mohammad N. AnwarS.M. N. HasanKhwaja M. RahmanSilva HitiSteven E. SchulzSean E. Gleason
    • Mohammad N. AnwarS.M. N. HasanKhwaja M. RahmanSilva HitiSteven E. SchulzSean E. Gleason
    • G01R31/06
    • G01R31/343
    • 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.
    • 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。
    • 3. 发明授权
    • Motor phase winding fault detection method and apparatus
    • 电机相绕组故障检测方法及装置
    • US08362732B2
    • 2013-01-29
    • US12698221
    • 2010-02-02
    • Mohammad N. AnwarS. M. N. HasanKhwaja M. RahmanSilva HitiSteven E. SchulzSean E. Gleason
    • Mohammad N. AnwarS. M. N. HasanKhwaja M. RahmanSilva HitiSteven E. SchulzSean E. Gleason
    • G01R31/02
    • G01R31/343
    • 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.
    • 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。
    • 6. 发明授权
    • Multiple inverter system with low power bus ripples and method therefor
    • 具有低功率母线波纹的多逆变器系统及其方法
    • US06864646B2
    • 2005-03-08
    • US10367201
    • 2003-02-14
    • Khwaja M. RahmanSilva HitiScott D. DownerBrian Welchko
    • Khwaja M. RahmanSilva HitiScott D. DownerBrian Welchko
    • B60L9/18H02P5/74H02P23/06H02P7/68G05B11/01G05B19/18H02P7/74
    • H02P23/06H02P5/74
    • 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.
    • 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。