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    • 1. 发明申请
    • SYSTEM AND METHOD FOR DETECTING, LOCALIZING AND QUANTIFYING EXCESS VOLTAGE DROP IN THREE-PHASE AC CIRCUITS
    • 用于检测,定位和量化三相交流电路中过电压降的系统和方法
    • WO2015153440A1
    • 2015-10-08
    • PCT/US2015/023305
    • 2015-03-30
    • EATON CORPORATION
    • SHARMA, Santosh KumarCHOUDHARY, RahulZHOU, XinDIMINO, Steven Andrew
    • G01R31/02G01R31/08H02J3/26
    • G01R31/086G01R31/088H02H3/253H02H3/382H02J3/26Y02E40/50Y04S10/522
    • A system and method for detecting and localizing excess voltage drop in single or multiple phases of three-phase AC circuits is disclosed. An electrical distribution circuit is provided that includes an input connectable to an AC source, an output connectable to terminals of an electrical machine, the output configured to provide three-phase voltages and currents to the electrical machine, and a diagnostic system configured to detect an excess voltage drop (EVD) in the electrical distribution circuit. The diagnostic system includes a processor that is programmed to receive measurements of the three-phase voltages and currents provided to the electrical machine, compute a negative sequence voltage from the three-phase voltages and currents, determine a localization reference phase angle for each phase based in part on the three-phase voltages and currents, and calculate an EVD in the electrical distribution circuit based on the negative sequence voltage and the localization reference phase angles.
    • 公开了用于检测和定位三相AC电路的单相或多相过剩电压降的系统和方法。 提供了一种配电电路,其包括可连接到AC电源的输入端,可连接到电机端子的输出端,所述输出被配置为向所述电机提供三相电压和电流;以及诊断系统,被配置为检测 配电电路中的过电压降(EVD)。 诊断系统包括处理器,其被编程为接收提供给电机的三相电压和电流的测量值,从三相电压和电流计算负序电压,确定每相基于的定位参考相位角 部分地基于三相电压和电流,并且基于负序电压和定位参考相位角计算配电电路中的EVD。
    • 5. 发明申请
    • SYSTEM AND METHOD FOR DETECTING, LOCALIZING, AND QUANTIFYING STATOR WINDING FAULTS IN AC MOTORS
    • 用于检测,定位和定量交流电机定子绕组故障的系统和方法
    • WO2015153444A1
    • 2015-10-08
    • PCT/US2015/023309
    • 2015-03-30
    • EATON CORPORATION
    • SHARMA, Santosh KumarCHOUDHARY, RahulDIMINO, Steven Andrew
    • H02P29/02
    • G01R31/346G01R19/0046H02P29/0243H02P2207/01
    • A system and method for detecting, localizing and quantifying stator winding faults in AC electrical machines is disclosed. A diagnostic system configured to detect a stator winding fault in an AC electrical machine includes a processor programmed to receive measurements of three-phase voltages and currents provided to the AC electrical machine from voltage and current sensors associated with the electrical distribution circuit, compute positive, negative and zero sequence components of voltage and current from the three-phase voltages and currents, and calculate a fault severity index (FSI) based on at least a portion of the positive, negative and zero sequence components of voltage and current, wherein calculating the FSI further comprises identifying a voltage gain in one or more phases of the AC electrical machine due to a stator winding fault and localizing the stator winding fault to one or more phases in the AC electrical machine.
    • 公开了一种用于检测,定位和定量交流电机定子绕组故障的系统和方法。 配置成检测AC电机中的定子绕组故障的诊断系统包括处理器,其被编程为从与配电电路相关联的电压和电流传感器接收提供给AC电机的三相电压和电流的测量值, 基于三相电压和电流的电压和电流的负序和零序分量,并且基于电压和电流的正,负和零序分量的至少一部分来计算故障严重度指数(FSI),其中计算 FSI还包括由于定子绕组故障在AC电机的一个或多个相中识别电压增益,并将定子绕组故障定位到AC电机中的一个或多个相位。
    • 6. 发明申请
    • SYSTEM AND METHOD OF DETECTING CAVITATION IN PUMPS
    • 检测血液渗透的系统和方法
    • WO2011124963A1
    • 2011-10-13
    • PCT/IB2011/000723
    • 2011-04-04
    • EATON CORPORATIONLU, BinSHARMA, Santosh KumarYAN, TingDIMINO, Steven, A.
    • LU, BinSHARMA, Santosh KumarYAN, TingDIMINO, Steven, A.
    • F04D15/00F04D29/66
    • F04D29/669F04D15/0077F04D15/0088
    • A system and method for detecting cavitation in pumps for fixed and variable supply frequency applications is disclosed. The system includes a controller (14, 24) having a processor (26) programmed to repeatedly receive real-time operating current data (28) from a motor (22) driving a pump (12), generate a current frequency spectrum from the current data, and analyze current data within a pair of signature frequency bands of the current frequency spectrum. The processor is further programmed to repeatedly determine fault signatures as a function of the current data within the pair of signature frequency bands, repeatedly determine fault indices based on the fault signatures and a dynamic reference signature, compare the fault indices to a reference index, and identify a cavitation condition in a pump based on a comparison between the reference index and a current fault index.
    • 公开了一种用于在固定和可变电源频率应用的泵中检测气蚀的系统和方法。 该系统包括具有被编程为从驱动泵(12)的马达(22)重复接收实时工作电流数据(28))的处理器(26)的控制器(14,24),从电流产生电流频谱 数据和分析当前频谱的一对签名频带内的当前数据。 处理器进一步被编程为重复地将故障签名确定为一对签名频带内的当前数据的函数,基于故障签名和动态参考签名重复地确定故障索引,将故障索引与参考索引进行比较,以及 基于参考指数和当前故障指数之间的比较,识别泵中的气蚀条件。