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公开(公告)号：US20190304673A1
公开(公告)日：2019-10-03
申请号：US15941070
申请日：2018-03-30
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Prabhakar Neti , Karim Younsi , Deepak Aravind
Abstract: A method for controlling operation of transformer system includes receiving, by a controller unit, transformer data corresponding to a transformer. The transformer data includes a plurality of transformer input parameters and a plurality of transformer output parameters. The method further includes receiving, by a digital transformer unit, the plurality of transformer input parameters from the controller unit. The digital transformer unit is a real-time operational model of the transformer. The method also includes generating, by the digital transformer unit, a plurality of transformer output parameter estimates corresponding to the plurality of transformer output parameters. The method further includes controlling operation of the transformer, by the controller unit, based on at least one of the transformer data and the plurality of transformer output parameter estimates.
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公开(公告)号：US20190302712A1
公开(公告)日：2019-10-03
申请号：US15941072
申请日：2018-03-30
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Prabhakar Neti , Karim Younsi , Deepak Aravind
Abstract: A method of controlling operation of a motor drive system includes receiving motor drive data corresponding to a variable frequency drive. The motor drive data includes a plurality of frequency drive input parameters and a plurality of frequency drive output parameters. The method further includes receiving, by a digital variable frequency drive unit, the plurality of frequency drive input parameters. The digital variable frequency drive unit is a real-time operational model of the variable frequency drive. The method further includes generating, by the digital variable frequency drive unit, frequency drive output parameter estimates corresponding to the plurality of frequency drive output parameters. The method also includes controlling operation of the variable frequency drive based on the one or more of the motor drive data, and the frequency drive output parameter estimates.
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公开(公告)号：US20170176536A1
公开(公告)日：2017-06-22
申请号：US14971464
申请日：2015-12-16
Applicant: General Electric Company
Inventor： Stefan Grubic , Manoj Ramprasad Shah , Prabhakar Neti , Pinjia Zhang
Abstract: A fault detection system for a wind turbine includes a doubly-fed induction generator (DFIG). The DFIG includes a wye-ring configured for at least three electrical phases. The fault detection system includes a data acquisition system including at least three sensors. Each sensor of said at least three sensors is configured to electrically couple with and measure a respective voltage of each phase of the at least three electrical phases of the wye-ring. The fault detection system further includes an alert system coupled to said data acquisition system. The alert system is configured to apply a Fourier transform to the respective measured voltages of each phase of the at least three electrical phases of the wye-ring. The alert system is further configured to provide an indication of a condition of the wye-ring based upon the transformed measured voltages.
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公开(公告)号：US09541606B2
公开(公告)日：2017-01-10
申请号：US13716969
申请日：2012-12-17
Applicant: General Electric Company
Inventor： Prabhakar Neti , Pinjia Zhang
CPC classification number: G01R31/34 , G01M13/045 , G01R31/343
Abstract: A method implemented using a controller based device includes receiving a measured electrical signal from an electrical device of an electromechanical device and receiving a measured vibration signal from a mechanical device of the electromechanical device, coupled to the electrical device. The method further includes determining a first signal signature based on the measured electrical signal and determining a second signal signature based on the measured vibration signal. The method also includes determining a diagnostic parameter based on the first signal signature and the second signal signature and determining a fault in the mechanical device based on the diagnostic parameter.
Abstract translation: 使用基于控制器的设备实现的方法包括从机电装置的电气装置接收测量的电信号，并接收来自耦合到电气装置的机电装置的机械装置的测量的振动信号。 该方法还包括基于所测量的电信号确定第一信号签名并基于所测量的振动信号确定第二信号签名。 该方法还包括基于第一信号签名和第二信号签名来确定诊断参数，并且基于诊断参数来确定机械设备中的故障。
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公开(公告)号：US09255970B2
公开(公告)日：2016-02-09
申请号：US13629206
申请日：2012-09-27
Applicant: General Electric Company
Inventor： Prabhakar Neti , Karim Younsi , Yingneng Zhou , Manoj Ramprasad Shah , Pinjia Zhang , Charles David Whitefield, II
CPC classification number: G01R31/343 , G01R31/1272 , G01R31/346
Abstract: Systems and methods are disclosed for on-line monitoring of the condition of the stator insulation of an AC motor or an electric generator. In certain embodiments, the system includes a transformer surrounding each pair of input and output cables associated with a given phase of power provided to the AC motor or generated by the electric generator. In another embodiment, a transformer surrounds the three input cables (for an AC motor) or the three output cables (for an electric generator) that correspond to phases of the AC motor or electric generator. In both embodiments, the transformers generate voltages that may be used to monitor leakage currents associated with the cables. A microcontroller monitors the voltages generated by the transformers and determines the condition of the stator insulation of the AC motor or the electric generator based on the voltages.
Abstract translation: 公开了用于在线监测交流电动机或发电机的定子绝缘的状态的系统和方法。 在某些实施例中，系统包括围绕与提供给AC电动机或由发电机产生的给定相电源相关联的每对输入和输出电缆的变压器。 在另一个实施例中，变压器围绕对应于AC电动机或发电机的相位的三个输入电缆（用于AC电动机）或三个输出电缆（用于发电机）。 在两个实施例中，变压器产生可用于监测与电缆相关联的泄漏电流的电压。 微控制器监视变压器产生的电压，并基于电压确定交流电动机或发电机的定子绝缘的状况。
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Patent Agency Ranking
公开(公告)号：US20140172326A1
公开(公告)日：2014-06-19
申请号：US13716933
申请日：2012-12-17
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Pinjia Zhang , Prabhakar Neti
CPC classification number: G01M13/00 , G01M13/04 , G01R31/343 , G06F17/00
Abstract: A method implemented using a processor based device includes obtaining a measured electrical signal from an electrical device coupled to a mechanical device and generating a signal signature representative of a fault in the mechanical device based on the measured electrical signal. The method also includes determining a diagnostic parameter based on a harmonic frequency of the signal signature and determining the fault in the mechanical device based on the diagnostic parameter.
Abstract translation: 使用基于处理器的设备实现的方法包括从耦合到机械设备的电气设备获得测量的电信号，并且基于所测量的电信号产生代表机械设备中的故障的信号签名。 该方法还包括基于信号签名的谐波频率来确定诊断参数，并且基于诊断参数确定机械装置中的故障。
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公开(公告)号：US20180248500A1
公开(公告)日：2018-08-30
申请号：US15442068
申请日：2017-02-24
Applicant: General Electric Company
Inventor： Nathaniel Benedict Hawes , Stefan Grubic , Prabhakar Neti
Abstract: A method of controlling an electric motor assembly includes receiving sensor feedback that is based at least in part on electrical properties of a variable frequency power signal provided to the electric motor assembly. The method also includes adjusting the phase angle of the variable frequency power signal provided to the electric motor assembly based at least in part on the sensor feedback. The method also includes determining an operational status of the electric motor assembly that receives the variable frequency power signal based at least in part on the sensor feedback.
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公开(公告)号：US09945897B2
公开(公告)日：2018-04-17
申请号：US14982496
申请日：2015-12-29
Applicant: General Electric Company
Inventor： Prabhakar Neti , Karim Younsi , Konrad Roman Weeber
CPC classification number: G01R31/1272 , G01R31/024 , G01R31/025 , G01R31/06 , G01R31/343
Abstract: Systems and methods are disclosed for on-line monitoring of the condition of insulation in electrical devices employing a differential current sensor. In certain embodiments a monitor that can be fitted to existing electrical devices by attachment of the sensor to a pair of phase cables is provided. In other embodiments, an electrical device configured with an insulation monitor is provided.
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公开(公告)号：US20170176567A1
公开(公告)日：2017-06-22
申请号：US14977103
申请日：2015-12-21
Applicant: General Electric Company
Inventor： Prabhakar Neti , Karim Younsi , Dan Tho Lu
CPC classification number: G01R35/005 , G01R15/18 , G01R19/0092 , G01R35/00
Abstract: Systems and methods are disclosed for calibration and compensation of on-line current transformers. In certain embodiments, a method to calibrate a single current transformer by use of an AC injected current is provided. In other embodiments, a method to calibrate and compensate multiple current transformers using a single AC injected current is provided. In further embodiments, a system for calibration and compensation of multiple current transformers is provided. The adequate frequency of the injected current as well as other characteristics for adequate use in some embodiments is provided.
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公开(公告)号：US09513316B2
公开(公告)日：2016-12-06
申请号：US13907551
申请日：2013-05-31
Applicant: General Electric Company
Inventor： Dan Tho Lu , Prabhakar Neti
CPC classification number: G01R19/0084 , G01R15/16 , G01R27/2605
Abstract: A system including a non-intrusive capacitive voltage sensor configured to couple to an insulator surrounding a metal conductor, wherein the non-intrusive capacitive voltage sensor is configured to produce a voltage signal indicative of a voltage in the metal conductor, and a monitor-controller system configured to receive the voltage signal from the non-intrusive capacitive voltage sensor, wherein the monitor-controller system is configured to use the voltage signal to monitor or control a machine.
Abstract translation: 一种包括非入侵电容性电压传感器的系统，其被配置为耦合到围绕金属导体的绝缘体，其中所述非侵入式电容性电压传感器被配置为产生指示所述金属导体中的电压的电压信号，以及监视器控制器 系统，其被配置为从非侵入式电容性电压传感器接收电压信号，其中所述监视器 - 控制器系统被配置为使用所述电压信号来监视或控制机器。
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