Patents by Inventor Deepak Raj SAGI
Deepak Raj SAGI 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: 11619206Abstract: A method for controlling a power output of a power generating unit includes receiving at least two measurement data sets from a location of integration of a power generating unit to an electrical grid. Each measurement data set includes a plurality of electrical parameters. The method further includes generating a grid model of the electrical grid based on the at least two measurement data sets. The grid model is characterized by an equivalent grid voltage and an equivalent grid impedance. The method further includes computing a strength value of the electrical grid based on the grid model, using the at least two measurement data sets. The method also includes controlling the power output of a power generating unit based on the strength value of the electrical grid.Type: GrantFiled: June 21, 2017Date of Patent: April 4, 2023Assignee: General Electric CompanyInventors: Kasi Viswanadha Raju Gadiraju, Deepak Aravind, Deepak Raj Sagi
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Patent number: 11467616Abstract: A method for controlling an energy generation and storage system using a multi-layer architecture is provided. The method includes determining, by one or more control devices, a power or energy generation for the energy generation and storage system at a first layer of the multi-layer architecture. The method includes determining, by the one or more control devices, a power or energy set point for the system at a second layer of the multi-layer architecture. The method includes controlling, by the one or more control devices, the energy generation and storage system based, at least in part, on the power or energy setpoint.Type: GrantFiled: November 8, 2019Date of Patent: October 11, 2022Assignee: General Electric CompanyInventors: Alina Fatima Moosvi, Vaidhya Nath Venkitanarayanan, Irene Michelle Berry, Patrick Hammel Hart, Hullas Sehgal, Fernando Javier D'Amato, Charles Joseph Kosuth, Deepak Raj Sagi, Rajni Kant Burra, Megan Ann DeWitt, Enno Ubben
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Publication number: 20220029424Abstract: A hybrid power plant including a plurality of power sources and controllers, a hybrid plant controller, and a computing system. The controllers operate the power sources according to operating set points. The hybrid plant controller transmits the operating set points to the controllers. The computing system is coupled to the hybrid plant controller and receives a first set of input parameters from a first subscriber, and carries out a first level of services to which the first subscriber subscribes to determine operating parameters for the first subscriber. The computing system receives a second set of input parameters from a second subscriber and carries out a second level of services to which the second subscriber subscribes to determine operating parameters for the second subscriber. The computing system then computes the operating set points based on aggregate operating parameters for the first and second subscribers.Type: ApplicationFiled: December 12, 2019Publication date: January 27, 2022Inventors: Rajni Burra, Deepak Raj Sagi, Arvind Kumar Tiwari
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Patent number: 11233402Abstract: A method for controlling a wind farm electrical power system is presented. The wind farm electrical power system includes a controller and a plurality of wind turbines electrically connected to an electrical grid through a point of interconnection. Each wind turbine includes a voltage regulator. The method includes receiving, via the controller, one or more electrical signals associated with the point of interconnection for a frequency domain. Further, the method includes estimating, via an estimator of the controller, a voltage sensitivity of the electrical grid using the one or more electrical signals. Moreover, the method includes dynamically controlling a voltage of the wind farm electrical power system at the point of interconnection based on the voltage sensitivity.Type: GrantFiled: January 6, 2020Date of Patent: January 25, 2022Assignee: General Electric CompanyInventors: Apoorva Anil Sohani, Karthikeyan Appuraj, Deepak Raj Sagi
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Publication number: 20210210959Abstract: A method for controlling a wind farm electrical power system is presented. The wind farm electrical power system includes a controller and a plurality of wind turbines electrically connected to an electrical grid through a point of interconnection. Each wind turbine includes a voltage regulator. The method includes receiving, via the controller, one or more electrical signals associated with the point of interconnection for a frequency domain. Further, the method includes estimating, via an estimator of the controller, a voltage sensitivity of the electrical grid using the one or more electrical signals. Moreover, the method includes dynamically controlling a voltage of the wind farm electrical power system at the point of interconnection based on the voltage sensitivity.Type: ApplicationFiled: January 6, 2020Publication date: July 8, 2021Inventors: Apoorva Anil Sohani, Karthikeyan Appuraj, Deepak Raj Sagi
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Patent number: 10985611Abstract: A method for estimating grid strength of a power grid connected to a renewable energy farm having a plurality of renewable energy power systems includes measuring, at least, a voltage, an active power, and a reactive power at a point of interconnection of the renewable energy farm to the power grid. The method also includes determining a sensitivity of the voltage to at least one of the active power or the reactive power at the point of interconnection. Further, the method includes determining the grid strength of the power grid as a function of the sensitivity of the voltage to at least one of the active power or the reactive power at the point of interconnection. In addition, the method includes dynamically determining at least one of an active power command or a reactive power command for the renewable energy farm at the point of interconnection based on the grid strength.Type: GrantFiled: April 10, 2019Date of Patent: April 20, 2021Assignee: General Electric CompanyInventors: Deepak Raj Sagi, Kasi Viswanadha Raju Gadiraju, Deepak Aravind, Vaidhya Nath Venkitanarayanan
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Patent number: 10958200Abstract: A method for operating a wind turbine power system that supplies real and reactive power to a grid includes operating a generator of the wind turbine power system up to a first speed limit. The method also includes monitoring a wind speed at the wind turbine power system. When the wind speed drops below a predetermined threshold, the method includes reducing the first speed limit of the generator to a reduced speed limit of the generator. Further, the method includes operating the generator at the reduced speed limit for as long as the wind speed remains below the predetermined threshold so as to optimize a tip-speed-ratio of the wind turbine power system during low wind speeds, thereby increasing power production of the wind turbine power system at low wind speeds.Type: GrantFiled: August 27, 2019Date of Patent: March 23, 2021Assignee: General Electric CompanyInventors: Kasi Viswanadha Raju Gadiraju, Deepak Raj Sagi, Rajni Kant Burra
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Publication number: 20210067073Abstract: A method for operating a wind turbine power system that supplies real and reactive power to a grid includes operating a generator of the wind turbine power system up to a first speed limit. The method also includes monitoring a wind speed at the wind turbine power system. When the wind speed drops below a predetermined threshold, the method includes reducing the first speed limit of the generator to a reduced speed limit of the generator. Further, the method includes operating the generator at the reduced speed limit for as long as the wind speed remains below the predetermined threshold so as to optimize a tip-speed-ratio of the wind turbine power system during low wind speeds, thereby increasing power production of the wind turbine power system at low wind speeds.Type: ApplicationFiled: August 27, 2019Publication date: March 4, 2021Inventors: Kasi Viswanadha Raju Gadiraju, Deepak Raj Sagi, Rajni Kant Burra
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Publication number: 20200328611Abstract: A method for estimating grid strength of a power grid connected to a renewable energy farm having a plurality of renewable energy power systems includes measuring, at least, a voltage, an active power, and a reactive power at a point of interconnection of the renewable energy farm to the power grid. The method also includes determining a sensitivity of the voltage to at least one of the active power or the reactive power at the point of interconnection. Further, the method includes determining the grid strength of the power grid as a function of the sensitivity of the voltage to at least one of the active power or the reactive power at the point of interconnection. In addition, the method includes dynamically determining at least one of an active power command or a reactive power command for the renewable energy farm at the point of interconnection based on the grid strength.Type: ApplicationFiled: April 10, 2019Publication date: October 15, 2020Inventors: Deepak Raj Sagi, Kasi Viswanadha Raju Gadiraju, Deepak Aravind, Vaidhya Nath Venkitanarayanan
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Patent number: 10763674Abstract: An electrical power system includes a system-level controller and a plurality of clusters of subsystems defining a stator power path and a converter power path for providing power to the power grid. The converter power path includes a partial power transformer. The system further includes a cluster transformer connecting each cluster to the power grid and a plurality of cluster-level controllers communicatively coupled with the system-level controller. Each of the clusters is communicatively coupled with one of the cluster-level controllers. Thus, the system-level controller regulates system-level active and/or reactive power based on required active or reactive power for the system, respectively, and compares the system-level active or reactive power with preferred values thereof.Type: GrantFiled: September 29, 2017Date of Patent: September 1, 2020Assignee: General Electric CompanyInventors: Govardhan Ganireddy, Rajni Kant Burra, Deepak Raj Sagi
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Publication number: 20200150706Abstract: A method for controlling an energy generation and storage system using a multi-layer architecture is provided. The method includes determining, by one or more control devices, a power or energy generation for the energy generation and storage system at a first layer of the multi-layer architecture. The method includes determining, by the one or more control devices, a power or energy set point for the system at a second layer of the multi-layer architecture. The method includes controlling, by the one or more control devices, the energy generation and storage system based, at least in part, on the power or energy setpoint.Type: ApplicationFiled: November 8, 2019Publication date: May 14, 2020Inventors: Alina Fatima Moosvi, Vaidhya Nath Venkitanarayanan, Irene Michelle Berry, Patrick Hammel Hart, Hullas Sehgal, Fernando Javier D'Amato, Charles Joseph Kosuth, Deepak Raj Sagi, Rajni Kant Burra, Megan Ann DeWitt, Enno Ubben
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Patent number: 10443577Abstract: A wind power generation system includes one or both of a memory or storage device storing one or more processor-executable executable routines, and one or more processors configured to execute the one or more executable routines which, when executed, cause acts to be performed. The acts include receiving weather data, wind turbine system data, or a combination thereof; transforming the weather data, the wind turbine system data, or the combination thereof, into a data subset, wherein the data subset comprises a first time period data; selecting one or more wind power system models from a plurality of models; transforming the one or more wind power system models into one or more trained models at least partially based on the data subset; and executing the one or more trained models to derive a forecast, wherein the forecast comprises a predicted electrical power production for the wind power system.Type: GrantFiled: June 30, 2016Date of Patent: October 15, 2019Assignee: General Electric CompanyInventors: Krishna Kumar Swaminathan, Deepak Raj Sagi, Pritesh Jain, Sridhar Dasaratha, Nitika Bhaskar, Rahul Kumar Srivastava, Milesh Shrichandra Gogad
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Publication number: 20190280640Abstract: A method and a system (111) for operating a hybrid power generation system (100) are presented. the hybrid power generation system (100) includes a wind power generation system (102), a wind power controller (104), a photo-voltaic (PV) power generation system, and a PV power controller (108). The method includes determining a hybrid-level power demand of the hybrid power generation system (100). The method further includes determining respective power demand set-points of the wind power generation system (102) and the PV power generation system (106) based at least in part on the hybrid-level power demand. The method also includes communicating the power demand set-points of the wind power generation system (102) and the PV power generation system (106) respectively to at least one of the wind power controller (104) and the PV power controller (108). A farm (300) having a farm level control system (304) is also presented.Type: ApplicationFiled: November 6, 2017Publication date: September 12, 2019Inventors: Govardhan Ganireddy, Yashomani Yashodhan Kolhatkar, Deepak Raj Sagi
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Publication number: 20190131795Abstract: A method for controlling a power output of a power generating unit includes receiving at least two measurement data sets from a location of integration of a power generating unit to an electrical grid. Each measurement data set includes a plurality of electrical parameters. The method further includes generating a grid model of the electrical grid based on the at least two measurement data sets. The grid model is characterized by an equivalent grid voltage and an equivalent grid impedance. The method further includes computing a strength value of the electrical grid based on the grid model, using the at least two measurement data sets. The method also includes controlling the power output of a power generating unit based on the strength value of the electrical grid.Type: ApplicationFiled: June 21, 2017Publication date: May 2, 2019Applicant: GENERAL ELECTRIC COMPANYInventors: Kasi Viswanadha Raju GADIRAJU, Deepak ARAVIND, Deepak Raj SAGI
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Publication number: 20190103747Abstract: An electrical power system includes a system-level controller and a plurality of clusters of subsystems defining a stator power path and a converter power path for providing power to the power grid. The converter power path includes a partial power transformer. The system further includes a cluster transformer connecting each cluster to the power grid and a plurality of cluster-level controllers communicatively coupled with the system-level controller. Each of the clusters is communicatively coupled with one of the cluster-level controllers. Thus, the system-level controller regulates system-level active and/or reactive power based on required active or reactive power for the system, respectively, and compares the system-level active or reactive power with preferred values thereof.Type: ApplicationFiled: September 29, 2017Publication date: April 4, 2019Inventors: Govardhan Ganireddy, Rajni Kant Burra, Deepak Raj Sagi
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Patent number: 10066604Abstract: A method for optimizing a hybrid wind system including a wind farm having a plurality of wind turbines and one or more energy storage units, is presented. The method includes acquiring actual wind power data associated with one or more dispatch windows. The method includes determining forecasted wind farm power estimates corresponding to the dispatch windows using a plurality of forecast schemes. The method includes computing difference values by comparing the forecasted wind farm power estimates to the actual wind power data. The method includes identifying a wind power forecast scheme based at least in part on the computed difference values and balancing a penalty to the grid with life consumption of the energy storage units while regulating the wind turbines and the energy storage units based at least in part on a subsequent forecasted wind farm power estimate generated using the identified wind power forecast scheme.Type: GrantFiled: May 12, 2015Date of Patent: September 4, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Dipankar Deb, Akshay Krishnamurty Ambekar, Deepak Raj Sagi
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Patent number: 10050447Abstract: A multi-farm wind power dispatch management system is provided which includes wind turbine dispatch controllers for controlling wind power dispatch of respective wind farm components and wind farm dispatch management systems for receiving respective wind farm component operating parameters and generating respective farm-level operating parameters. The system also includes group dispatch management systems for receiving the farm-level operating parameters and generating respective group level operating parameters.Type: GrantFiled: March 26, 2014Date of Patent: August 14, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Rajni Kant Burra, Avijit Saha, Venkatarao Ryali, Govardhan Ganireddy, Akshay Krishnamurty Ambekar, Deepak Raj Sagi
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Patent number: 9915243Abstract: A system for automatic generation control in a wind farm is provided. The system includes a wind farm controller for controlling the plurality of energy storage elements. The wind farm controller receives an automatic generation control set point from an independent system operator, generates a farm-level storage power set point for the wind farm based on the automatic generation control set point, generates individual storage power set points for the plurality of energy storage elements based on states of charge of the respective energy storage elements, and controls the plurality of energy storage elements based on the individual storage power set points for dispatching storage power to perform automatic generation control.Type: GrantFiled: February 18, 2015Date of Patent: March 13, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Deepak Raj Sagi, Mark Edward Cardinal, Avijit Saha, Rajni Kant Burra, Govardhan Ganireddy
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Patent number: 9709035Abstract: A method is provided. The method includes identifying a dispatch interval for dispatching power from a wind farm, determining an observation time interval and a control time interval in the dispatch interval, computing a farm power moving average of the power of the wind farm, computing a grid frequency moving average of a grid frequency, determining a farm power set point based on a predefined wind farm operating model using the farm power moving average and the grid frequency moving average, controlling one or more wind turbines in the wind farm during the control time interval based on the farm power set point to regulate a farm-level dispatch power.Type: GrantFiled: September 3, 2015Date of Patent: July 18, 2017Assignee: GENERAL ELECTRIC COMPANYInventors: Deepak Raj Sagi, Pritesh Jain, Kasi Viswanadha Raju Gadiraju, Nithya Kalidass Anand
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Patent number: 9709037Abstract: A method for controlling a wind farm including a plurality of wind turbines is provided. The method includes computing an error between a farm-level base point power and a measured wind farm power, generating an aggregated farm-level active power set point for the wind farm based on the error and a frequency response set point, generating aggregated turbine-level active power set points based on the aggregated farm-level active power set point, transmitting the aggregated turbine-level active power set points, determining aero power set points and storage power set points for the respective wind turbines and energy storage elements of the respective wind turbines from the aggregated turbine-level active power set points, and controlling the plurality of wind turbines for delivering aero power based on the respective aero power set points and controlling the energy storage elements to provide storage power based on the respective storage power set points.Type: GrantFiled: December 18, 2014Date of Patent: July 18, 2017Assignee: GENERAL ELECTRIC COMPANYInventors: Deepak Raj Sagi, Avijit Saha, Govardhan Ganireddy, Mark Edward Cardinal, Rajni Kant Burra