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    MEMS MICRO-SWITCH ARRAY BASED CURRENT LIMITING ARC-FLASH ELIMINATOR
    61.
    发明申请
    MEMS MICRO-SWITCH ARRAY BASED CURRENT LIMITING ARC-FLASH ELIMINATOR 审中-公开
    MEMS微动开关阵列电流限流电弧消除器

    公开(公告)号：US20080310058A1

    公开(公告)日：2008-12-18

    申请号：US11763721

    申请日：2007-06-15

    申请人： William James Premerlani ,  Joshua Isaac Wright ,  Kanakasabapathi Subramanian ,  John Norton Park

    发明人： William James Premerlani ,  Joshua Isaac Wright ,  Kanakasabapathi Subramanian ,  John Norton Park

    IPC分类号： H02H3/08

    CPC分类号： H01H83/20 ,  H01H9/42 ,  H01H9/50 ,  H01H9/541 ,  H01H9/56 ,  H01H59/0009 ,  H01H2071/008 ,  H01H2083/201

    摘要： The present invention comprises MEMS enabled apparatus for the detection of arc-faults and the elimination of arc-flash conditions. The apparatus comprises an arc-flash detection component and a current limiting component. The current limiting component comprises a logic circuit in communication with the user interface, an MEMS protection circuit in communication with the logic circuit, and a switching circuit in communication with the MEMS protection circuit. The switching circuit comprises a plurality of micro-electromechanical system switching devices and a voltage limiting device, wherein the voltage limiting device is configured to prevent an over voltage event during a current limiting operation.

    摘要翻译： 本发明包括用于检测电弧故障和消除电弧闪光条件的MEMS启用装置。 该装置包括电弧闪光检测部件和限流部件。 电流限制部件包括与用户接口通信的逻辑电路，与逻辑电路通信的MEMS保护电路，以及与MEMS保护电路通信的开关电路。 开关电路包括多个微机电系统开关装置和电压限制装置，其中所述电压限制装置被配置为在限流操作期间防止过电压事件。

    System and method for synchronized phasor measurement
    62.
    发明授权
    System and method for synchronized phasor measurement 有权
    用于同步相量测量的系统和方法

    公开(公告)号：US07444248B2

    公开(公告)日：2008-10-28

    申请号：US11119113

    申请日：2005-04-29

    申请人： William James Premerlani ,  Bogdan Zdzislaw Kasztenny ,  Mark Gerard Adamiak

    发明人： William James Premerlani ,  Bogdan Zdzislaw Kasztenny ,  Mark Gerard Adamiak

    IPC分类号： G01R19/00

    CPC分类号： G01R19/2513 ,  Y02E60/728 ,  Y04S10/265

    摘要： A phasor measurement system is provided for computing synchronized phasor measurements. The phasor measurement system includes acquisition circuitry for acquiring voltage or current values from a power line, sampling circuitry for sampling the voltage or current values, and processing circuitry for computing a phasor and at least one time derivative of the phasor based on the sampled voltage or current values and for computing a synchronized phasor value based on the phasor and the at least one time derivative of the phasor.

    摘要翻译： 提供相量测量系统用于计算同步相量测量。 相量测量系统包括用于从电力线获取电压或电流值的采集电路，用于对电压或电流值进行采样的采样电路，以及用于基于采样电压计算相量和相量的至少一次时间导数的处理电路， 基于相量和相量的至少一个时间导数来计算同步相量值的当前值。

    Methods and apparatus for removing error due to decaying offsets from measured power system currents
    65.
    发明授权
    Methods and apparatus for removing error due to decaying offsets from measured power system currents 失效
    用于消除由测量的电力系统电流引起的衰减偏移的误差的方法和装置

    公开(公告)号：US5798932A

    公开(公告)日：1998-08-25

    申请号：US651178

    申请日：1996-05-21

    申请人： William James Premerlani ,  Mark Gerard Adamiak ,  Dingari Sreenivas ,  Eyyunni Venugopal

    发明人： William James Premerlani ,  Mark Gerard Adamiak ,  Dingari Sreenivas ,  Eyyunni Venugopal

    IPC分类号： H02H1/00 ,  H02H7/26 ,  G01R31/08 ,  H02H3/38

    CPC分类号： H02H1/0092 ,  H02H7/26

    摘要： A digital decaying current offset correction method and apparatus, in one aspect, separates the requirements of detecting fault existence from the requirements of detecting fault location. Once the decaying offset removal routine is initiated, current and voltage are sampled and, for each current and voltage sample, current and voltage phasors are generated. The current phasor values, which are not offset corrected, may be used to determine whether to trip a breaker. Once the breaker is tripped, the decaying offsets are removed from the current phasors. The offset corrected current phasors are then used to locate the fault.

    摘要翻译： 数字衰减电流偏移校正方法和装置，在一个方面，将检测故障存在的要求与检测故障定位的要求分开。 一旦开始衰减偏移去除程序，则对电流和电压进行采样，并且对于每个电流和电压采样，产生电流和电压相量。 可以使用未校正的当前相量值来确定是否跳闸。 一旦断路器跳闸，衰减的偏移量从当前相量中移除。 然后使用偏移校正的电流相量来定位故障。

    Self-tuning and compensating turn fault detector
    66.
    发明授权
    Self-tuning and compensating turn fault detector 失效
    自调谐补偿回路故障检测器

    公开(公告)号：US5786708A

    公开(公告)日：1998-07-28

    申请号：US617718

    申请日：1996-04-01

    申请人： William James Premerlani ,  Gerald Burt Kliman ,  David Jeremiah Hoeweler ,  Rudolph Alfred Albert Koegl

    发明人： William James Premerlani ,  Gerald Burt Kliman ,  David Jeremiah Hoeweler ,  Rudolph Alfred Albert Koegl

    IPC分类号： G01R31/06 ,  G01R31/34

    CPC分类号： G01R31/343 ,  G01R31/346

    摘要： A method for detecting turn faults in an induction motor includes obtaining motor current and voltage waveforms and converting the motor current and voltage waveforms to digitized current and voltage waveforms. Fundamental phasors of the digitized current and voltage waveforms are extracted and, a symmetrical component transform is applied to the fundamental phasors to obtain symmetrical component current and voltage phasors including a negative sequence voltage phasor (V.sub.-) and negative sequence current phasor (I.sub.-). A fault injected negative sequence current (Ii.sub.-) is estimated according to the following equation: Ii.sub.- =I.sub.- -V.sub.- /Z.sub.- -Ir, wherein Z.sub.- is a characteristic negative sequence impedance and Ir is a residual injected negative sequence current. The existence of a turn fault is determined by comparing the estimated fault injected negative sequence current with a threshold fault injected negative sequence current.

    摘要翻译： 用于检测感应电动机中的匝故障的方法包括获得电动机电流和电压波形，并将电动机电流和电压波形转换成数字化的电流和电压波形。 提取数字化电流和电压波形的基本相量，对基本相量施加对称分量变换，以获得包括负序电压相量（V-）和负序电流相量（I-）的对称分量电流和电压相量， 。 根据以下等式估计故障注入的负序电流（Ii-）：Ii- = I-V- / Z-Ir，其中Z-是特征负序阻抗，Ir是残留注入的负序电流 。 通过将估计故障注入的负序电流与阈值故障注入的负序电流进行比较来确定转向故障的存在。

    Robust on line stator turn fault identification system
    69.
    发明授权
    Robust on line stator turn fault identification system 有权
    稳定的在线定子转向故障识别系统

    公开(公告)号：US08135551B2

    公开(公告)日：2012-03-13

    申请号：US12365114

    申请日：2009-02-03

    申请人： Arvind Kumar Tiwari ,  William James Premerlani ,  Somakumar Ramachandrapanicker ,  Bhaskar Sen ,  Bogdan Z. Kasztenny ,  Arijit Banerjee

    发明人： Arvind Kumar Tiwari ,  William James Premerlani ,  Somakumar Ramachandrapanicker ,  Bhaskar Sen ,  Bogdan Z. Kasztenny ,  Arijit Banerjee

    IPC分类号： G01R31/00

    CPC分类号： G01R31/343

    摘要： A system and method for identifying turn faults in a stator of a motor are provided. The method includes determining a normalized cross-coupled impedance from the symmetrical components of measured voltages and currents of the motor. Additionally, the normalized cross-coupled impedance may be normalized to a negative sequence impedance. The negative sequence impedance may be determined through a regression analysis using parameters of the motor, such as line-to-line voltage, horsepower, and number of poles. A system is provided that includes a device having a memory and processor configured to determine a normalized cross-coupled impedance, compare the normalized cross-coupled impedance to one or more thresholds, and trigger and alarm and/or trip the motor.

    摘要翻译： 提供了一种用于识别电动机定子中的匝故障的系统和方法。 该方法包括根据测量的电压和电流的电流的对称分量来确定归一化的交叉耦合阻抗。 此外，标准化的交叉耦合阻抗可以归一化为负序阻抗。 负序阻抗可以通过使用马达参数的回归分析来确定，例如线对线电压，马力和极数。 提供了一种系统，其包括具有存储器和处理器的设备，其被配置为确定归一化的交叉耦合阻抗，将标准化的交叉耦合阻抗与一个或多个阈值进行比较，并触发和报警和/或跳闸电动机。