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公开(公告)号：US10184985B2
公开(公告)日：2019-01-22
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：US20180365963A1
公开(公告)日：2018-12-20
申请号：US15628004
申请日：2017-06-20
Applicant: General Electric Company
Inventor： Prabhakar Neti , Balakrishna Pamulaparthy , Sudhanshu Mishra , Balamourougan Vinayagam , Mitalkumar Kanabar , Vijayasarathi Muthukrishnan
CPC classification number: G08B21/182 , G01R23/16 , G01R31/343 , H02P29/0241
Abstract: This disclosure relates to systems and methods for electrical signature analysis of electrical rotating machines. In one embodiment of the disclosure, a method includes ascertaining initial information associated with an electrical rotating machine, assigning a plurality of operational conditions associated with the machine to a plurality of buckets, and recording the electrical data to obtain a pre-defined number of sets of learning data. The method further includes determining, based at least on the initial information and the learning data, that the machine is in a healthy condition, obtaining, based on the learning data, baseline data associated with at the at least one bucket, and generating, based on the baseline data, a threshold associated with the bucket and at least one fault frequency associated with the machine. The method further includes generating, based on the threshold and the baseline data, alarms concerning a state of the electrical rotating machine.
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公开(公告)号：US09645046B2
公开(公告)日：2017-05-09
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.
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公开(公告)号：US09431949B2
公开(公告)日：2016-08-30
申请号：US14264332
申请日：2014-04-29
Applicant: General Electric Company
Inventor： Pinjia Zhang , Prabhakar Neti , Patel Bhageerath Reddy
CPC classification number: H02P23/08 , H02P21/18 , H02P23/14 , H02P23/16 , H02P27/026 , H02P29/0241
Abstract: A method for estimating a speed of an induction motor includes applying a voltage to the induction motor and measuring a current of the induction motor. A current fast fourier transform (FFT) of the current is then determined and a slip of the induction motor is calculated based on the current FFT. A speed of the induction motor is then estimated based on the slip of the induction motor.
Abstract translation: 用于估计感应电动机的速度的方法包括向感应电动机施加电压并测量感应电动机的电流。 然后确定电流的当前快速傅立叶变换（FFT），并且基于当前FFT来计算感应电动机的滑差。 然后基于感应电动机的滑移来估计感应电动机的速度。
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公开(公告)号：US20190302711A1
公开(公告)日：2019-10-03
申请号：US15941067
申请日：2018-03-30
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Prabhakar Neti , Karim Younsi , Deepak Aravind
Abstract: A method for controlling operation of an electric power generation system includes receiving power generator data corresponding to the electric power generation system. The method further includes receiving, using a digital prime mover unit, a set-point parameter corresponding to a prime mover unit and generating one or more prime mover parameter estimates corresponding to the plurality of prime mover parameters. Further, the method includes receiving, using a digital generator unit, one or more prime mover parameter estimates and generating one or more generator parameter estimates corresponding to the plurality of generator parameters. The digital prime mover unit and the digital generator unit are real-time operational models of the prime mover unit and the generator unit. The method also includes controlling the operation of the electric power generation system based on at least one or more of the power generator data, the prime mover parameter estimates, and the generator parameter estimates.
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Patent Agency Ranking
公开(公告)号：US20190302710A1
公开(公告)日：2019-10-03
申请号：US15941064
申请日：2018-03-30
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Prabhakar Neti , Karim Younsi , Deepak Aravind , Xu Han
Abstract: A method of controlling an operation of a mechanical transmission system includes receiving motor-load data corresponding to the mechanical transmission system. The method further includes receiving, by a digital motor unit, one or more motor input parameters and generating motor parameter estimates of one or more of the plurality of motor parameters. The method also includes receiving, by a digital load unit, one or more motor parameter estimates from the digital motor unit and generating load parameter estimates corresponding to one or more load parameters. The digital motor unit and the digital load unit is a real-time operational model of the motor unit and the load unit respectively. The method also includes controlling the operation of the mechanical transmission system based on one or more of the motor-load data, motor parameter estimates and load parameter estimates.
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公开(公告)号：US10403116B2
公开(公告)日：2019-09-03
申请号：US15628004
申请日：2017-06-20
Applicant: General Electric Company
Inventor： Prabhakar Neti , Balakrishna Pamulaparthy , Sudhanshu Mishra , Balamourougan Vinayagam , Mitalkumar Kanabar , Vijayasarathi Muthukrishnan
IPC: G08B21/18 , G01R23/16 , G01R31/34 , H02P29/024
Abstract: This disclosure relates to systems and methods for electrical signature analysis of electrical rotating machines. In one embodiment of the disclosure, a method includes ascertaining initial information associated with an electrical rotating machine, assigning a plurality of operational conditions associated with the machine to a plurality of buckets, and recording the electrical data to obtain a pre-defined number of sets of learning data. The method further includes determining, based at least on the initial information and the learning data, that the machine is in a healthy condition, obtaining, based on the learning data, baseline data associated with at the at least one bucket, and generating, based on the baseline data, a threshold associated with the bucket and at least one fault frequency associated with the machine. The method further includes generating, based on the threshold and the baseline data, alarms concerning a state of the electrical rotating machine.
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公开(公告)号：US10161988B2
公开(公告)日：2018-12-25
申请号：US15309529
申请日：2015-05-14
Applicant: General Electric Company
Inventor： Prabhakar Neti , Yingneng Zhou , Liwei Hao
IPC: G01R31/02 , G01R31/12 , E21B43/12 , E21B47/00 , E21B17/00 , E21B41/00 , H01B9/02 , H02G9/02 , E21B47/12 , F04D13/06 , F04D13/08
Abstract: A system (100, 200) is presented. The system includes a fluid lifting device (102, 202) located inside a well (106, 206), and comprising an electrical motor (108, 208), a three phase cable (114, 214) for coupling the fluid lifting device to a power source (112, 212), at least one high sensitivity differential current transformer (104, 203, 204) for generating imbalance signals (128, 227) representative of an imbalance current in at least one of the electrical motor and the three phase cable, wherein the at least one high sensitivity differential current transformer is disposed such that the at least one high sensitivity differential current transformer surrounds at least a portion of the three phase cable, and a processing subsystem (136, 236) for monitoring the health of at least one of the fluid lifting device and the three phase cable based on the imbalance signals.
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29.发明申请公开(公告)号：US20170184656A1
公开(公告)日：2017-06-29
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：US20150311849A1
公开(公告)日：2015-10-29
申请号：US14264332
申请日：2014-04-29
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Pinjia Zhang , Prabhakar Neti , Patel Bhageerath Reddy
IPC: H02P23/08
CPC classification number: H02P23/08 , H02P21/18 , H02P23/14 , H02P23/16 , H02P27/026 , H02P29/0241
Abstract: A method for estimating a speed of an induction motor includes applying a voltage to the induction motor and measuring a current of the induction motor. A current fast fourier transform (FFT) of the current is then determined and a slip of the induction motor is calculated based on the current FFT. A speed of the induction motor is then estimated based on the slip of the induction motor.
Abstract translation: 用于估计感应电动机的速度的方法包括向感应电动机施加电压并测量感应电动机的电流。 然后确定电流的当前快速傅立叶变换（FFT），并且基于当前FFT来计算感应电动机的滑差。 然后基于感应电动机的滑移来估计感应电动机的速度。
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