Patents by Inventor Arijit Banerjee
Arijit Banerjee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8626371Abstract: Diagnosing auxiliary equipment associated with an engine. A condition of the auxiliary equipment is diagnosed based on information provided by signals from a generator operationally connected to the auxiliary equipment or other signals associated with the engine. Different types of degradation are distinguished based on discerning characteristics within the information. Thus, a degraded auxiliary equipment component can be identified in a manner that reduces service induced delay.Type: GrantFiled: September 16, 2011Date of Patent: January 7, 2014Assignee: General Electric CompanyInventors: Ajith Kumar, Somakumar Ramachandrapanicker, Paul Flynn, Arijit Banerjee, Rupam Mukherjee
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Patent number: 8626372Abstract: A condition of an engine is diagnosed based on information provided by signals from speed sensors associated with the engine or other signals associated with a generator operationally connected to the engine. Different types of degradation are distinguished based on discerning characteristics within the information. Thus, a degraded engine component can be identified in a manner that reduces service induced delay.Type: GrantFiled: September 16, 2011Date of Patent: January 7, 2014Assignee: General Electric CompanyInventors: Ajith Kumar, Somakumar Ramachandrapanicker, Paul Flynn, Arijit Banerjee, Rupam Mukherjee
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Publication number: 20130311113Abstract: The method includes measuring an operating parameter comprising at least one of a phasor current and phasor voltage of an electrical machine. The method further includes determining a diagnostic parameter indicative of a fault of the electrical machine based on the measured operating parameter. The method also includes estimating end of life of the electrical machine based on the diagnostic parameter using an error minimization method.Type: ApplicationFiled: May 21, 2012Publication date: November 21, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Wrichik Basu, Somakumar Ramachandrapanicker, Dhaval Chandubhai Patel, Demetrios Karambatos, Robert Charles Deveaux, David John Allcock, Arijit Banerjee
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Patent number: 8538626Abstract: Methods and systems are provided for an engine. A condition of the engine may be diagnosed based on a combustion torque profile of the engine estimated using signals from a generator operationally connected to the engine and/or other signals associated with the engine. Different types of degradation may be distinguished based on discerning characteristics within the estimated combustion torque profile data. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.Type: GrantFiled: September 16, 2011Date of Patent: September 17, 2013Assignee: General Electric CompanyInventors: Ajith Kumar, Somakumar Ramachandrapanicker, Paul Flynn, Arijit Banerjee, Rupam Mukherjee
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Patent number: 8473228Abstract: A method for detecting an anomaly in an induction machine includes obtaining or receiving a signal from the induction machine; processing the signal so as to obtain a low frequency signal, then rectifying the low frequency signal; and, declaring if the anomaly is present, based on the rectified low frequency signal. A system for detecting anomalies is also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.Type: GrantFiled: December 14, 2009Date of Patent: June 25, 2013Assignee: General Electric CompanyInventors: Arvind Kumar Tiwari, Dragan Stankovic, Suryavalli Uppuluri, Arijit Banerjee
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Publication number: 20130073127Abstract: Methods and systems are provided for an engine. A condition of the engine may be diagnosed based on a combustion torque profile of the engine estimated using signals from a generator operationally connected to the engine and/or other signals associated with the engine. Different types of degradation may be distinguished based on discerning characteristics within the estimated combustion torque profile data. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: General Electric CompanyInventors: Ajith Kumar, Somakumar Ramachandrapanicker, Paul Flynn, Arijit Banerjee, Rupam Mukherjee
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Publication number: 20130068003Abstract: Methods and systems are provided for an engine. A condition of the engine may be diagnosed based on information provided by signals from speed sensors associated with the engine and/or other signals associated with a generator operationally connected to the engine. Different types of degradation may be distinguished based on discerning characteristics within the information. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: General Electric CompanyInventors: AJITH Kumar, Somakumar Ramachandrapanicker, Paul Flynn, Arijit Banerjee, Rupam Mukherjee
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Publication number: 20130073126Abstract: Methods and systems are provided for an engine and associated auxiliary equipment. A condition of the auxiliary equipment may be diagnosed based on information provided by signals from a generator operationally connected to the auxiliary equipment and/or other signals associated with the engine. Different types of degradation may be distinguished based on discerning characteristics within the information. Thus, a degraded auxiliary equipment component may be identified in a manner that reduces service induced delay.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: General Electric CompanyInventors: Ajith Kumar, Somakumar Ramachandrapanicker, Paul Flynn, Arijit Banerjee, Rupam Mukherjee
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Publication number: 20130073175Abstract: Methods and systems are provided for an engine. A condition of the engine may be diagnosed based on information provided by signals from a generator operationally connected to the engine and/or other signals associated with the engine. Different types of degradation may be distinguished based on discerning characteristics within the information. Thus, a degraded engine component may be identified in a manner that reduces service induced delay.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Arijit BANERJEE, Ajith Kuttainnair KUMAR, Arvind Kumar TIWARI, Rupam MUKHERJEE, Somakumar RAMACHANDRAPANICKER, Paul Lloyd FLYNN, Boyanapally SRILATHA
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Publication number: 20130030742Abstract: A method for monitoring a synchronous machine is described. The method includes injecting a narrowband sinusoidal signal at a first end of a field winding of the synchronous machine. The method further includes monitoring a voltage at a second end of the field winding with respect to ground. The method then identifies a resonant frequency based on the monitored voltage, and generates a winding health indicator based on the identified resonant frequency and an expected resonant frequency.Type: ApplicationFiled: July 26, 2012Publication date: January 31, 2013Inventors: Arijit Banerjee, Somakumar Ramachandrapanicker, Haiyan Sun, Subhra Samanta, Srinivas Satya Sai Mallampalli
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Publication number: 20130013231Abstract: A method for a vehicle having plural electric motors includes generating motor electrical signatures for the motors. The motor electrical signatures represent one or more characteristics of electrical energy that is supplied to the motors. The method also includes identifying one or more fault measures of each of the motor electrical signatures. The fault measures are indicative of mechanical characteristics of the motors. The method further includes comparing the one or more fault measures of each motor with the one or more fault measures of the other motors in the same vehicle and predicting an impending mechanical failure of one or more of the motors based on comparing the fault measures of the motors.Type: ApplicationFiled: July 6, 2011Publication date: January 10, 2013Inventors: Arijit Banerjee, Rupam Mukherjee, Ajith Kumar, Somakumar Ramachandrapanicker, Srilatha Boyanapally, Mohan Kumar Katta
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Publication number: 20120239348Abstract: A method of monitoring health of a mechanical drive train is provided. The method includes obtaining voltage and current signals from at least one phase of an electrical machine coupled with the mechanical drive train. The method also includes representing the electrical machine having a non-sinusoidal flux distribution as a combination of a plurality of harmonic order sinusoidally distributed virtual electrical machines based on the obtained voltage and current signals. The method further includes determining a torque profile associated with one or more combinations of the sinusoidally distributed virtual electrical machines. Finally, the method includes detecting the presence of an anomaly in the mechanical drive train based on the torque profile or spectrum.Type: ApplicationFiled: March 14, 2011Publication date: September 20, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Arijit Banerjee, Rupam Mukherjee, Arvind Kumar Tiwari, Somakumar Ramachandrapanicker, Srilatha Boyanapally, Paul Lloyd Flynn, Ajith Kuttannair Kumar
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Patent number: 8264246Abstract: A method for determining characteristics of a multi-material object is provided. The method includes producing a rotating electric field by providing an applied electrical signal set of individual electrical signal patterns to electrodes surrounding the multi-material object. The method also includes obtaining a measured electrical signal of electrical signals from the electrodes corresponding to each electrical signal pattern applied. An electrical network is determined based on the applied electrical signal set, the measured electrical signal set and an inverse of the applied electrical signal set. The method further includes determining the characteristics of the multi-material object by analyzing the electrical network.Type: GrantFiled: January 5, 2010Date of Patent: September 11, 2012Assignee: General Electric CompanyInventors: Sakethraman Mahalingam, Manoj Kumar Koyithitta Meethal, Arijit Banerjee, Wrichik Basu, Harish Kumar Pillai
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Publication number: 20120161684Abstract: A method, system and computer program product for monitoring health of a synchronous machine is provided. The method includes receiving a plurality of phase voltage values and a plurality of phase current values. The method then computes a negative sequence voltage (Vn) based on the plurality of phase voltage values. The method also computes one or more operating parameters based on at least one of the plurality of phase voltage values and the plurality of phase current values. The method retrieves from a data store, one or more known Vn based on the one or more operating parameters. The method then computes a machine health indicator based on the computed Vn and the one or more known Vn, and raises an alarm based on the machine health indicator.Type: ApplicationFiled: December 22, 2010Publication date: June 28, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Arvind Kumar Tiwari, Arijit Banerjee, Hao Huang, Xiaochuan Jia, Srilatha Boyanapally, Rupam Mukherjee
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Publication number: 20120158325Abstract: A method, system and computer program product for determining the health of a transformer are provided. The method includes computing an effective turns ratio based on a primary electrical parameter associated with a primary winding of the transformer and a secondary electrical parameter associated with a secondary winding of the transformer. The method further includes computing an operational magnetizing current based on the effective turns ratio and primary and secondary currents of the transformer or primary and secondary voltages of the transformer. Finally, the method includes determining an inter-turn winding health indicator based at least in part on the operational magnetizing current.Type: ApplicationFiled: December 16, 2010Publication date: June 21, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Arijit Banerjee, Sunil Srinivasa Murthy, Srinivas Satya Sai Mallampalli, Ravindra Shyam Bhide
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Publication number: 20120109546Abstract: A method for detecting an anomaly in a rotor of an induction machine is provided. The method includes obtaining or receiving three-phase stator voltage and current signals from the induction machine connected to a time varying load. The method also includes processing the three-phase stator voltage and current signals by transforming into corresponding two-phase quantities. Further, the method includes transforming the two-phase quantities into two quadrature components into a two-phase reference frame. The method includes analyzing a plurality of in-phase components and the quadrature components. Finally, the method includes detecting the presence of an anomaly and segregating the anomaly from load variations based on the analysis of the plurality of in phase components and the quadrature components, thereby reducing false alarm.Type: ApplicationFiled: October 29, 2010Publication date: May 3, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Arvind Kumar Tiwari, Arijit Banerjee, Jeffrey Glenn Mazereeuw
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Patent number: 8140291Abstract: A system and method are provided for correction of parameters used in determination of stator turn faults of an induction motor. An embodiment may include determining a residual impedance and/or a residual voltage of the motor, and correcting a normalized cross-coupled impedance based on the residual impedance and residual voltage. Additional embodiments may include measuring an operating temperature of the motor and determining a negative sequence impedance of the motor based on the temperature. Another embodiment may include measuring voltages and currents of the motor and determining phasors for the voltages and currents using compensation for variations from a nominal frequency of the motor.Type: GrantFiled: February 3, 2009Date of Patent: March 20, 2012Assignee: General Electric CompanyInventors: Bogdan Z. Kasztenny, Somakumar Ramachandrapanicker, Arvind Kumar Tiwari, Arijit Banerjee
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Patent number: 8135551Abstract: 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.Type: GrantFiled: February 3, 2009Date of Patent: March 13, 2012Assignee: General Electric CompanyInventors: Arvind Kumar Tiwari, William James Premerlani, Somakumar Ramachandrapanicker, Bhaskar Sen, Bogdan Z. Kasztenny, Arijit Banerjee
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Patent number: 8121804Abstract: A method for determining characteristics of a multi-material object is provided. The method includes determining an electric element matrix representing the multi-material object. The electric element matrix is pre-multiplied by a first mathematical transformation matrix to obtain a first transformed electric element matrix. The first transformed electric element matrix is post-multiplied with a second mathematical transformation matrix to obtain a second transformed electric element matrix. The method further includes determining the characteristics of the multi-material object based on the second transformed electric element matrix.Type: GrantFiled: January 5, 2010Date of Patent: February 21, 2012Assignee: General Electric CompanyInventors: Sakethraman Mahalingam, Arijit Banerjee, Wrichik Basu, Harish Kumar Pillai
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Publication number: 20110163770Abstract: A method for determining characteristics of a multi-material object is provided. The method includes producing a rotating electric field by providing an applied electrical signal set of individual electrical signal patterns to electrodes surrounding the multi-material object. The method also includes obtaining a measured electrical signal of electrical signals from the electrodes corresponding to each electrical signal pattern applied. An electrical network is determined based on the applied electrical signal set, the measured electrical signal set and an inverse of the applied electrical signal set. The method further includes determining the characteristics of the multi-material object by analyzing the electrical network.Type: ApplicationFiled: January 5, 2010Publication date: July 7, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Sakethraman Mahalingam, Manoj Kumar Koyithitta Meethal, Arijit Banerjee, Wrichik Basu, Harish Kumar Pillai