Patents by Inventor Ajith Kuttannair Kumar

Ajith Kuttannair Kumar 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).

  • Publication number: 20210284110
    Abstract: A vehicle control system includes a controller comprising one or more processors. The controller is configured to determine a respective force exerted on a route segment by a first wheel of a plurality of wheels of a vehicle and obtain a respective available adhesion value for the first wheel at an interface with the route segment. The controller is configured to determine a respective effective adhesion value to utilize for driving rotation of the first wheel. The effective adhesion value is within a designated wheelslip margin relative to the available adhesion value for the first wheel without exceeding the available adhesion value. The controller is further configured to assign a torque setting to rotate the first wheel based at least in part on the respective force exerted on the route segment by the first wheel and the effective adhesion value for the first wheel.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 16, 2021
    Inventors: Ajith Kuttannair Kumar, Bret Dwayne Worden
  • Publication number: 20210237696
    Abstract: A brake control system includes an interface controller configured to communicate with different control paths of sources for control of a brake system of a vehicle system. Each of the control paths is configured to communicate a control signal from a different source of the sources to control operation of the brake system. The interface controller is configured to arbitrate between the control signals concurrently received from the different sources via the control paths to dictate which of the different sources controls operation of the brake system at different times and prevent control by other sources of the different sources from concurrently controlling the operation of the brake system.
    Type: Application
    Filed: January 31, 2020
    Publication date: August 5, 2021
    Inventors: Ajith Kuttannair Kumar, Brian Meyer, Chris Wiesner, Matthew Paul Ensley, Patricia Sue Lacy
  • Publication number: 20210188097
    Abstract: A power system is disclosed. The power system includes a first power generating unit. The first power generating unit includes a first power converting subunit and a first control unit coupled to the first power converting subunit, where the first control unit is configured to regulate a voltage of the first power generating unit. The power system further includes a second power generating unit coupled to the first power generating unit and a load, where the second power generating unit includes a second power converting subunit and a second control unit coupled to the second power converting subunit, wherein the second control unit is configured to control a current of the second power generating unit to share a quantity of electrical output current flowing through the load among the first and second power generating units.
    Type: Application
    Filed: March 10, 2021
    Publication date: June 24, 2021
    Inventors: Ajith Kuttannair Kumar, Govardhan Ganireddy, Shahid Ali, Prashanth Manikumar Chennamsetty
  • Publication number: 20210139054
    Abstract: An energy system for a vehicle system having a plurality of motors that may include a first power supply assembly that may also include a first battery assembly of a plurality of battery assemblies. The first power supply assembly also may include a first bus coupled to a first motor of the plurality of motors and coupled to the first battery assembly. A second power supply assembly may also be provided that includes a second battery assembly of the plurality of battery assemblies coupled to a second bus that is coupled to a second motor of the plurality of motors. A controller may also be provided that may be configured to vary conduction of electric current from the first battery assembly to the first motor by the first bus based on an operating condition of the second power supply assembly to provide a first input to the first motor that may be different than a second input provided to the second motor by the second battery assembly.
    Type: Application
    Filed: January 25, 2021
    Publication date: May 13, 2021
    Inventor: Ajith Kuttannair Kumar
  • Patent number: 10974607
    Abstract: A power system is disclosed. The power system includes a first power generating unit. The first power generating unit includes a first power converting subunit and a first control unit coupled to the first power converting subunit, where the first control unit is configured to regulate a voltage of the first power generating unit. The power system further includes a second power generating unit coupled to the first power generating unit and a load, where the second power generating unit includes a second power converting subunit and a second control unit coupled to the second power converting subunit, wherein the second control unit is configured to control a current of the second power generating unit to share a quantity of electrical output current flowing through the load among the first and second power generating units.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: April 13, 2021
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventors: Ajith Kuttannair Kumar, Govardhan Ganireddy, Shahid Ali, Prashanth Manikumar Chennamsetty
  • Publication number: 20210101488
    Abstract: A power system including at least one electrical machine, plurality of doubly fed induction machines (DFIMs), a plurality of first power converters, and a speed regulation unit is presented. The electrical machine includes a mechanical input end and at least one of a first stator winding terminal and a first rotor winding terminal. Each DFIM includes a second stator winding terminal, a second rotor winding terminal, and a mechanical output end. At least one of the first stator winding terminal and the first rotor winding terminal is coupled to one of first power converters and the second rotor winding terminal of each DFIM is coupled to one of the first power converters. The speed regulation unit is coupled to at least one of the mechanical input end and the mechanical output end.
    Type: Application
    Filed: April 3, 2018
    Publication date: April 8, 2021
    Inventors: Govardhan Ganireddy, Rupam Mukherjee, Shahid Ali, Ajith Kuttannair Kumar, Manthram Sivasubramaniam, Adnan Kutubuddin Bohori
  • Publication number: 20210104961
    Abstract: A power delivery system includes a first inverter, a second inverter, and a turbocharger assist device. The first inverter is electrically connected to a primary bus and configured to receive electric current from an alternator via the primary bus to supply the electric current to a first load. The alternator generates the electric current based on mechanical energy received from an engine. The second inverter is electrically connected to a secondary bus discrete from the primary bus. The turbocharger assist device is mechanically connected to a turbocharger operably coupled to the engine. The turbocharger assist device is electrically connected to the secondary bus and configured to generate electric current based on rotation of a rotor of the turbocharger. The second inverter is configured to receive the electric current generated by the turbocharger assist device via the secondary bus to supply the electric current to a second load.
    Type: Application
    Filed: October 7, 2019
    Publication date: April 8, 2021
    Inventor: Ajith Kuttannair Kumar
  • Patent number: 10933893
    Abstract: An energy system for a vehicle system having a plurality of motors that may include a first power supply assembly that may also include a first battery assembly of a plurality of battery assemblies. The first power supply assembly also may include a first bus coupled to a first motor of the plurality of motors and coupled to the first battery assembly. A second power supply assembly may also be provided that includes a second battery assembly of the plurality of battery assemblies coupled to a second bus that is coupled to a second motor of the plurality of motors. A controller may also be provided that may be configured to vary conduction of electric current from the first battery assembly to the first motor by the first bus based on an operating condition of the second power supply assembly to provide a first input to the first motor that may be different than a second input provided to the second motor by the second battery assembly.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: March 2, 2021
    Assignee: TRANSPORTATION IP HOLDINGS, LLC
    Inventor: Ajith Kuttannair Kumar
  • Publication number: 20210006178
    Abstract: A system is provided that may include plural converters that are connected to a common bus. Each of the converters may be configured to convert an alternating current (AC) through the common bus to a direct current (DC) by alternating switches of each of the plural converters between open and closed states in a switching cycle. The system may also include a controller circuit that may be configured to adjust the AC conducted onto the common bus to the plural converters so that a root mean square of a ripple current component of the AC meets one or more designated criteria.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 7, 2021
    Inventors: Ajith Kuttannair Kumar, Subhas Chandra DAS
  • Publication number: 20200391682
    Abstract: A method includes detecting a determined operating condition of a first power converter that is one of a plurality of first power converters in a power generating unit, and the power generating unit is one of a plurality of power generating units. The method further includes responding to detection of the determined operating condition by: controlling, via at least one remaining first power converter of the plurality of first power converters, a load current flowing through a power bus coupled to the plurality of power generating units, and altering one or more droop characteristics corresponding to one or more second power converters disposed in other power generating units based at least in part on the controlled load current flowing through the power bus, wherein the one or more second power converters disposed in other power generating units are coupled to the power bus.
    Type: Application
    Filed: August 27, 2020
    Publication date: December 17, 2020
    Inventors: Govardhan Ganireddy, Ajith Kuttannair Kumar, Shahid Ali, Prashanth Manikumar Chennamsetty
  • Patent number: 10837487
    Abstract: A bearing assembly is disclosed. The bearing assembly includes a first race. Further, the bearing assembly includes a second race disposed concentric to the first race, where the second race has a radius that changes along an axial length of the bearing assembly. The bearing assembly also includes a housing disposed around the second race and operatively coupled to the second race. Moreover, the bearing assembly includes a plurality of support structures configured to detachably couple the second race to the housing, where the plurality of support structures are configured to disengage the second race from the housing to allow motion of the second race when a torque on the second race is greater than a threshold torque value.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: November 17, 2020
    Assignee: Transportation IP Holdings, LLC
    Inventors: Mandyam Rangayan Sridhar, Ravindra Shankar Ganiger, Dinesh R. Rakwal, Ajith Kuttannair Kumar, Bret Dwayne Worden
  • Patent number: 10814856
    Abstract: A method includes obtaining creep measurements and tractive/braking measurements from at least one vehicle system at different locations along a route segment while the at least one vehicle system moves through the route segment. The method also includes calculating tribology characteristics of the route segment at the different locations. The tribology characteristics are based on the creep measurements and the tractive/braking measurements from the at least one vehicle system. The tribology characteristics are indicative of a friction coefficient of the route segment at the different locations. The method also includes determining an effectiveness of a friction modifier applied to the route segment based on the tribology characteristics.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: October 27, 2020
    Assignee: GE GLOBAL SOURCING LLC
    Inventors: Ajith Kuttannair Kumar, Joseph Forrest Noffsinger
  • Patent number: 10819087
    Abstract: A bus assembly is provided having a bus bar with first and second conductive layers extending along an insulator sheet interposed between the first and second conductive layers. The first and second conductive layers are partially aligned with respect to each other to form a first overlap region of the insulator sheet. The bus assembly includes a first set of arms having a set of diodes and a second set of arms having a set of switches. The bust bar includes a plurality of bus links coupling the plurality of arms to the bus bar forming a plurality of inverters. Each of bus links include a respective first bracket and a respective second bracket aligned with each other forming a second overlap region of the insulator sheet. The first bracket is electrically coupled to the first conductive layer and the second bracket is electrically coupled to the second conductive layer.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: October 27, 2020
    Assignee: GE GLOBAL SOURCING LLC
    Inventors: Sarit Ratadiya, Ajith Kuttannair Kumar, Tharunendra Sekhar, Mark Allen Murphy, Jacob Alan Hubbell, Kevin Ruybal, Emil Nikolov, Maxim Tsupko, Jeffrey Louis Daigle
  • Publication number: 20200324797
    Abstract: In one embodiment of the subject matter described herein a system is provided. The system includes a location determining circuit configured to acquire position information of a vehicle system moving along a route. The system includes a controller circuit having one or more processors. The controller circuit is configured to calculate curvatures of the route, based at least in part on the position information, to form a curvature waveform. The controller circuit is further configured to generate a route map based on the curvature waveform.
    Type: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    Inventors: Munishwar Ahuja, Ajith Kuttannair Kumar, Bret Dwayne Worden, Shankar Chandrasekaran, Dattaraj Jagdish Rao
  • Publication number: 20200319259
    Abstract: A system includes a first group of sensors and a control circuit including one or more processors. The first group of sensors is associated with an energy storage module having one or more energy storage devices. The sensors in the first group generate sensor measurements representing one or more parameters of the energy storage module. The control circuit is configured to receive the sensor measurements and determine one or more of a reference value or a reference variation of a specific parameter related to the energy storage module based at least in part on the sensor measurements. The control circuit compares one or more of monitored values or monitored variations of the specific parameter, based on the sensor measurements generated by sensors, to the reference value or the reference variation of the specific parameter and detects a deviation that is greater than a designated tolerance margin.
    Type: Application
    Filed: April 3, 2019
    Publication date: October 8, 2020
    Inventors: Jacob Pressman, Ajith Kuttannair Kumar
  • Patent number: 10797614
    Abstract: A system that may include, plural inverters connected to a common bus and at least one capacitor, the inverters configured to convert a direct current (DC) through the common bus to an alternating current (AC) by alternating different switches of the inverters between open and closed states in a respective switching cycle for each of the inverters, and a controller circuit configured to reduce a ripple current conducted onto the common bus to the inverters, by controlling the inverters to apply a frequency shift to the respective switching cycle of one or more of the inverters to spread a harmonic current spectrum along the common bus. The controller circuit is configured to apply the frequency shift to at least a first inverter and a second inverter of the plural inverters.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: October 6, 2020
    Assignee: GE Global Sourcing
    Inventors: Ajith Kuttannair Kumar, Subhas Chandra Das
  • Publication number: 20200290613
    Abstract: System and method configured to determine a direction of movement of a vehicle in response to a brake being released or in response to initiating movement of the vehicle from a stopped position along a route. The direction of movement is determined based on a selected travel direction of the vehicle, a grade of the route, and at least one of applied tractive efforts or applied braking efforts.
    Type: Application
    Filed: May 29, 2020
    Publication date: September 17, 2020
    Inventors: James Edward Trainor, James A. Oswald, Jeffrey John Wolff, Timothy Brown, Henry Young, Lindsay Short, Edward Thomas Petrak, Ronald Fischer, Michael Wagner, Justin Chadwell, Carlos Vallejo, Sean Cillessen, Larry Bench, Kenneth Paul Nedley, Ajith Kuttannair Kumar
  • Publication number: 20200254900
    Abstract: An electric supply system for a vehicle that includes two or more energy storage devices configured to store electric energy is provided. Two or more buses are also provided, and each bus conductively couples an energy storage device of the two or more energy storage devices with a different motor of a plurality of motors of the vehicle. A controller is configured to control conduction of electric current from each of the battery assemblies to each of the motors of the vehicle, the controller is also configured to direct each of the battery assemblies to concurrently vary an input to each of the corresponding motors of the vehicle.
    Type: Application
    Filed: February 11, 2019
    Publication date: August 13, 2020
    Inventor: Ajith Kuttannair Kumar
  • Patent number: 10730536
    Abstract: A system includes a location determining circuit configured to acquire position information of a vehicle system moving along a route. The system also includes a controller circuit having one or more processors. The controller circuit is configured to calculate curvatures of the route, based at least in part on the position information, to form a curvature waveform. The controller circuit is further configured to generate a route map based on the curvature waveform.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: August 4, 2020
    Assignee: GE GLOBAL SOURCING LLC
    Inventors: Munishwar Ahuja, Ajith Kuttannair Kumar, Bret Dwayne Worden, Shankar Chandrasekaran, Dattaraj Jagdish Rao
  • Publication number: 20200223435
    Abstract: A vehicle control system determines an upper non-zero limit on deceleration of a vehicle to prevent rollback of the vehicle down a grade being traveled up on by the vehicle. The upper non-zero limit on deceleration is determined by the controller based on a payload carried by the vehicle, a speed of the vehicle, and a grade of a route being traveled upon by the vehicle. The controller is configured to monitor the deceleration of the vehicle, and to automatically prevent the deceleration of the vehicle from exceeding the upper non-zero limit by controlling one or more of a brake or a motor of the vehicle. The controller also is configured to one or more of actuate the brake or supply current to the motor of the vehicle to prevent rollback of the vehicle while the vehicle is moving up the grade at a non-zero speed.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 16, 2020
    Inventors: Jeffrey John Wolff, Timothy Brown, Henry Young, Lindsay Short, Edward Thomas Petrak, Ronald Fischer, Michael Wagner, Justin Chadwell, Carlos Vallejo, Sean Cillessen, Larry Bench, Kenneth Paul Nedley, Ajith Kuttannair Kumar