公开(公告)号：US08378603B2

公开(公告)日：2013-02-19

申请号：US12687496

申请日：2010-01-14

申请人： S. M. N. Hasan ,  Brian A. Welchko ,  David P. Tasky ,  Justin O. Nielsen ,  Silva Hiti

发明人： S. M. N. Hasan ,  Brian A. Welchko ,  David P. Tasky ,  Justin O. Nielsen ,  Silva Hiti

IPC分类号： H02P1/04

CPC分类号： H02P21/0003 ,  H02P21/22 ,  H02P27/08

摘要： Methods and systems for controlling an electric motor are provided. The electric motor includes at least one winding. A winding current flowing through the at least one winding is monitored. The winding current has an oscillating component and an offset component. The offset component of the winding current is isolated from the oscillating component of the winding current. The electric motor is controlled based on the offset component of the winding current.

摘要翻译： 提供了用于控制电动机的方法和系统。 电动机包括至少一个绕组。 监测流经至少一个绕组的绕组电流。 绕组电流具有振荡分量和偏移分量。 绕组电流的偏移分量与绕组电流的振荡分量隔离。 基于绕组电流的偏移分量来控制电动机。

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。