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公开(公告)号：US20140009102A1
公开(公告)日：2014-01-09
申请号：US14022614
申请日：2013-09-10
申请人： Eaton Corporation
发明人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven Andrew Dimino
IPC分类号： H02P27/04
CPC分类号： H02P27/047 , G01P3/48 , G01P3/489 , H02P21/18 , H02P23/14
摘要： A system and method for determining rotor speed of an AC induction machine is disclosed. The system is programmed to estimate a rotor speed of the induction machine according to a linear speed estimation algorithm and based on name plate information (NPI) of the induction machine and parameters of the AC induction machine during operation thereof. The rotor speed estimation system is also programmed to estimate a rotor speed of the AC induction machine according to a frequency-domain signal processing algorithm and determine if the rotor speed estimated thereby is valid. If the rotor speed estimated by the frequency-domain signal processing algorithm is valid, then a tuned rotor speed of the AC induction machine is estimated according to the linear speed estimation algorithm and based, in part, on the rotor speed estimated by the frequency-domain signal processing algorithm.
摘要翻译： 公开了一种用于确定AC感应电机的转子速度的系统和方法。 该系统被编程为根据线速度估计算法并且基于感应电动机的铭牌信息（NPI）以及在其运行期间的AC感应电机的参数来估计感应电机的转子速度。 转子速度估计系统还被编程为根据频域信号处理算法估计AC感应电机的转子速度，并且确定由此估计的转子速度是否有效。 如果通过频域信号处理算法估计的转子速度有效，则根据线速度估计算法估计交流感应电机的调谐转子速度，部分基于由频域信号处理算法估计的转子速度， 域信号处理算法。
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公开(公告)号：US10598715B2
公开(公告)日：2020-03-24
申请号：US14835163
申请日：2015-08-25
申请人： Eaton Corporation
发明人： David Glenn Loucks , Robert Thomas Wolfe , Steven Andrew Dimino , Daniel Edward Hrncir , Deborah Kaltwasser Mort , Alec Dane Burkle
摘要： A system for locating a ground fault in an HRG power distribution system includes an HRG pulsing system having a ground fault sensor to detect a ground fault, a pulsing contactor to introduce a pulsing current into the power distribution system, and a controller to control the pulsing contactor to introduce the pulsing current into the power distribution system in response to a ground fault detection by the ground fault sensor. Current sensors in the power distribution system monitor three-phase current signals on conductors of the power distribution system, with the current sensors positioned on distribution networks in the power distribution system and at a protection device included on each respective distribution network. A processor associated with each protection device and operably connected to the current sensors thereat receives signals from the current sensors for identifying a location of a ground fault in the power distribution system.
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3.发明申请SYSTEM AND METHOD FOR DETECTING EXCESS VOLTAGE DROP IN THREE-PHASE AC CIRCUITS 有权用于检测三相交流电路中过电压降的系统和方法公开(公告)号：US20140320148A1
公开(公告)日：2014-10-30
申请号：US13873326
申请日：2013-04-30
申请人： EATON CORPORATION
发明人： Santosh Kumar Sharma , Xin Zhou , Steven Andrew Dimino , Supriya Karnani , Snehal Kale , Rahul Choudhary , Debsubhra Chakraborty
IPC分类号： G01R31/02
CPC分类号： G01R31/024 , G01R31/026 , G01R31/088 , G01R31/343 , H02H3/33 , H02H3/44 , H02H5/10 , H02H7/228
摘要： A system and method for detecting excess voltage drop (EVD) in a three-phase electrical distribution circuit includes a diagnostic system comprising a processor that is programmed to receive three-phase voltages and currents provided to terminals of the electrical machine, determine fundamental components of the three-phase voltages and currents provided to the terminals, and compute positive, negative, and zero sequence currents from the fundamental components. The processor is also programmed to extract a compensated negative sequence current from the negative sequence current component, add the compensated negative sequence current to the positive sequence current to determine fault reference current phasors, determine a negative current reference phase angle for each phase based in part on a phase angle of the positive sequence current, and identify an EVD fault in the electrical distribution circuit based on the compensated negative sequence current, the fault reference current phasors, and the negative current reference phase angles.
摘要翻译： 用于检测三相配电电路中的过电压降（EVD）的系统和方法包括诊断系统，其包括被编程为接收提供给电机端子的三相电压和电流的处理器， 提供给端子的三相电压和电流，并从基本分量计算正，负和零序电流。 处理器还被编程为从负序电流分量提取补偿的负序电流，将补偿的负序电流加到正序电流以确定故障参考电流相量，部分地基于每个相确定负电流参考相位角 在正序电流的相位角上，基于补偿的负序电流，故障参考电流相量和负电流参考相位角来识别配电电路中的EVD故障。
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公开(公告)号：US20180172768A1
公开(公告)日：2018-06-21
申请号：US15380724
申请日：2016-12-15
申请人： Eaton Corporation
CPC分类号： G01R31/34 , G01R31/025 , G01R31/06 , G01R31/346 , G01R31/42
摘要： A system and method for detecting a phase-to-ground fault in an AC electrical machine operates to receive measurements of three-phase voltages and currents provided to the AC electrical machine, compute at least one of a zero sequence component and a negative sequence component of voltage and current from the three-phase voltages and currents, and calculate a fault severity index (F SI) based on the zero or negative sequence component of voltage and current, so as to identify a phase-to-ground fault in the AC electrical machine. Calculating the FSI further includes determining a total value of the zero or negative sequence current, determining a noise-contributed value of the zero or negative sequence current included in the total value, determining a compensated value of the zero or negative sequence current based on the total value and the noise-contributed value, and calculating the FSI based on the compensated value.
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公开(公告)号：US09791496B2
公开(公告)日：2017-10-17
申请号：US14230238
申请日：2014-03-31
申请人： Eaton Corporation
CPC分类号： G01R31/086 , G01R31/088 , H02H3/253 , H02H3/382 , H02J3/26 , Y02E40/50 , Y04S10/522
摘要： 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.
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6.发明申请公开(公告)号：US20150346266A1
公开(公告)日：2015-12-03
申请号：US14291161
申请日：2014-05-30
申请人： Eaton Corporation
摘要： A system for locating a ground fault in a high resistance grounded (HRG) power distribution system includes a pulsing circuit configured to introduce a pulse current into the distribution system and current sensors adapted to monitor three-phase current signals present on conductors of the distribution system, with the current sensors positioned on a number of distribution networks included in the HRG power distribution system and at a protective device included on each respective distribution network. A processor associated with each protective device receives signals from the current sensors for identifying a location of the ground fault in the HRG power distribution system, with the processor associated with each protective device receiving measurements of the three-phase current signals from the current sensors over a plurality of cycles and identifying a pattern of interest in the three-phase current signals across the plurality of cycles in order to detect a ground fault.
摘要翻译： 用于在高电阻接地（HRG）配电系统中定位接地故障的系统包括脉冲电路，其被配置为将脉冲电流引入分配系统中，并且电流传感器适于监测存在于配电系统的导体上的三相电流信号 其中，电流传感器位于包括在HRG配电系统中的多个分配网络上，并且包括在每个相应分配网络上的保护装置上。 与每个保护装置相关联的处理器从电流传感器接收信号，用于识别HRG配电系统中接地故障的位置，处理器与每个保护装置相关联，接收来自电流传感器的三相电流信号的测量结果 多个周期并且识别多个周期内的三相电流信号中的感兴趣模式，以便检测接地故障。
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7.发明申请SYSTEM AND METHOD FOR DETECTING, LOCALIZING, AND QUANTIFYING STATOR WINDING FAULTS IN AC MOTORS 有权用于检测，定位和定量交流电机定子绕组故障的系统和方法公开(公告)号：US20150276880A1
公开(公告)日：2015-10-01
申请号：US14230260
申请日：2014-03-31
申请人： Eaton Corporation
CPC分类号： G01R31/346 , G01R19/0046 , H02P29/0243 , H02P2207/01
摘要： 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.
摘要翻译： 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。 配置为检测AC电机中的定子绕组故障的诊断系统包括被编程为接收从与配电电路相关联的电压和电流传感器提供给AC电机的三相电压和电流的测量的处理器， 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进一步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。
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公开(公告)号：US09130499B2
公开(公告)日：2015-09-08
申请号：US14022614
申请日：2013-09-10
申请人： Eaton Corporation
发明人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven Andrew Dimino
CPC分类号： H02P27/047 , G01P3/48 , G01P3/489 , H02P21/18 , H02P23/14
摘要： A system and method for determining rotor speed of an AC induction machine is disclosed. The system is programmed to estimate a rotor speed of the induction machine according to a linear speed estimation algorithm and based on name plate information (NPI) of the induction machine and parameters of the AC induction machine during operation thereof. The rotor speed estimation system is also programmed to estimate a rotor speed of the AC induction machine according to a frequency-domain signal processing algorithm and determine if the rotor speed estimated thereby is valid. If the rotor speed estimated by the frequency-domain signal processing algorithm is valid, then a tuned rotor speed of the AC induction machine is estimated according to the linear speed estimation algorithm and based, in part, on the rotor speed estimated by the frequency-domain signal processing algorithm.
摘要翻译： 公开了一种用于确定AC感应电机的转子速度的系统和方法。 该系统被编程为根据线速度估计算法并且基于感应电动机的铭牌信息（NPI）以及在其运行期间的AC感应电机的参数来估计感应电机的转子速度。 转子速度估计系统还被编程为根据频域信号处理算法估计AC感应电机的转子速度，并且确定由此估计的转子速度是否有效。 如果通过频域信号处理算法估计的转子速度有效，则根据线速度估计算法估计交流感应电机的调谐转子速度，部分基于由频域信号处理算法估计的转子速度， 域信号处理算法。
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9.发明授权公开(公告)号：US09933487B2
公开(公告)日：2018-04-03
申请号：US14230260
申请日：2014-03-31
申请人： Eaton Corporation
IPC分类号： G01R31/06 , G01R31/34 , G01R19/00 , H02P29/024
CPC分类号： G01R31/346 , G01R19/0046 , H02P29/0243 , H02P2207/01
摘要： 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.
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公开(公告)号：US09160257B2
公开(公告)日：2015-10-13
申请号：US14139380
申请日：2013-12-23
申请人： Eaton Corporation
发明人： Yahan Hua , Dongxiao Wu , Bruno Patrice-Bernard Lequesne , David Lee Klapstein , Steven Andrew Dimino , Kaijam M. Woodley
摘要： A system and method for automatically defining and tuning operating parameters for a motor control device with minimal or no operator input is disclosed. The system includes a motor control device electrically connectable to an AC motor and a controller that is programmed to define a motor start-up function based on a rated current of the motor, the motor start-up function comprising an initial torque factor and an initial ramp time. The controller also triggers switching devices of the motor according to the motor start-up function to inject current into the motor during a first trial run, monitors operating conditions of the motor and motor control device during the first trial run, modifies the motor start-up function based on the monitored operating conditions, and triggers the plurality of switching devices according to the modified motor start-up function to inject current into the motor during a subsequent trial run.
摘要翻译： 公开了一种用于自动定义和调整具有最小或没有操作者输入的电机控制装置的操作参数的系统和方法。 该系统包括电连接到AC电动机的电动机控制装置和被编程为基于电动机的额定电流来定义电动机起动功能的控制器，该电动机起动功能包括初始转矩因子和初始转矩 斜坡时间 控制器还根据电机启动功能触发电动机的开关装置，在第一次试运行期间将电流注入电动机，监测第一次试运行期间电动机和电动机控制装置的运行状态， 基于所监视的操作条件，根据修改的电动机启动功能触发多个开关装置，以在随后的试运行期间将电流注入电动机。
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