Patents by Inventor Bhupesh Agrawal
Bhupesh Agrawal 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: 11850956Abstract: An electric compact tractor powered by a plurality of lithium ion battery modules housed in a battery pack. A pair of electrical bus bars connect the plurality of lithium ion battery modules in the battery pack, and extend from the battery pack to electric motors for traction drive, implement drive and steering. A low voltage control circuit may be used for turning on the plurality of lithium ion battery modules in the battery pack.Type: GrantFiled: May 14, 2021Date of Patent: December 26, 2023Assignee: DEERE & COMPANYInventors: Vikas V. Jadhav, Sudip Kandke, Gaurav Dusane, Subhabrata Gupta, Bhupesh Agrawal, Saravanan Stallin, Navneet Garg
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Patent number: 11700787Abstract: An electric walk behind greens mower includes an electric reel motor rotating a cutting reel; an electric traction motor rotating at least one traction drive roller; and an electronic control unit commanding the electric traction motor and the electric reel motor to rotate at reduced speeds during a turn if an electronic signal indicates a deviation from a normal walk speed. The electric walk behind greens mower also may include a battery management system that activates a low voltage power supply if a key switch is turned from the off position to the run position, and that provides a start signal to an electronic control unit if the key switch is momentarily turned from the run position to the start position whereby the electronic control unit activates a high voltage power supply to the electric reel motor and the electric traction motor.Type: GrantFiled: June 11, 2019Date of Patent: July 18, 2023Assignee: Deere & CompanyInventors: Punamchandra Kulkarni, Sandip Edake, Saravanan Deenadayalan, Chinmay Deshpande, Rajesaheb Bagwan, Bhupesh Agrawal, Naveen Kumar
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Publication number: 20220363145Abstract: An electric compact tractor powered by a plurality of lithium ion battery modules housed in a battery pack. A pair of electrical bus bars connect the plurality of lithium ion battery modules in the battery pack, and extend from the battery pack to electric motors for traction drive, implement drive and steering. A low voltage control circuit may be used for turning on the plurality of lithium ion battery modules in the battery pack.Type: ApplicationFiled: May 14, 2021Publication date: November 17, 2022Inventors: VIKAS V. JADHAV, SUDIP KANDKE, GAURAV DUSANE, SUBHABRATA GUPTA, BHUPESH AGRAWAL, SARAVANAN STALLIN, NAVNEET GARG
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Patent number: 11498548Abstract: Embodiments of an intelligent hybrid powertrain system include an engine, a controller architecture, and an electric drive subsystem having a battery supply and a motor/generator. The controller architecture is configured to: (i) monitor a current state of charge (SoC) of the battery supply when the combine harvester engages in a combine harvest cycle having a tank fill phase and a tank unload phase; (ii) during the tank fill phase, operate the motor/generator to supplement the engine power output and regulate a rate of battery discharge to prevent the current SoC of the battery supply from decreasing below a lower predetermined SoC threshold prior to completion of the tank fill phase; and (iii) during the tank unload phase, operate the motor/generator to charge the battery supply until the current SoC of the battery supply is equal to or greater than a first upper predetermined SoC threshold.Type: GrantFiled: March 15, 2021Date of Patent: November 15, 2022Assignee: DEERE & COMPANYInventors: Alan D. Sheidler, Padmakar Surwade, Bhupesh Agrawal
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Publication number: 20220304240Abstract: Embodiments of an intelligent power allocation system include a ground traction undercarriage controllable to propel a hybrid combine over terrain, a separator device configured to separate grain from other crop material ingested by the hybrid combine, a mechanical powertrain including an internal combustion engine, and an electric drive subsystem containing a rechargeable battery pack and a motor/generator (M/G). A controller architecture is configured to monitor a current separator load placed on the hybrid combine when driving movement of the separator device during active harvesting. The controller architecture further selectively places the intelligent power allocation system in a separator power splitting mode in which the M/G and the internal combustion engine concurrently drive movement of the separator device based, at least in part, on whether the current separator load exceeds an upper load threshold.Type: ApplicationFiled: March 24, 2021Publication date: September 29, 2022Inventors: Alan D. Sheidler, Bhupesh Agrawal, Padmakar Surwade
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Publication number: 20220135018Abstract: Embodiments of an intelligent hybrid powertrain system include an engine, a controller architecture, and an electric drive subsystem having a battery supply and a motor/generator. The controller architecture is configured to: (i) monitor a current state of charge (SoC) of the battery supply when the combine harvester engages in a combine harvest cycle having a tank fill phase and a tank unload phase; (ii) during the tank fill phase, operate the motor/generator to supplement the engine power output and regulate a rate of battery discharge to prevent the current SoC of the battery supply from decreasing below a lower predetermined SoC threshold prior to completion of the tank fill phase; and (iii) during the tank unload phase, operate the motor/generator to charge the battery supply until the current SoC of the battery supply is equal to or greater than a first upper predetermined SoC threshold.Type: ApplicationFiled: March 15, 2021Publication date: May 5, 2022Inventors: Alan D. Sheidler, Padmakar Surwade, Bhupesh Agrawal
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Patent number: 10820535Abstract: A forestry machine configured to cut timber, where the forestry machine comprises a felling head including a support frame having an accumulation pocket, an accumulating arm, and a harvest arm. The forestry machine further comprises a stator having coils thereon adapted to produce a time varying stator magnetic field, a rotor having at least either a set of slots or a set of permanent magnets mounted thereon facing the stator and adapted to produce a radially directed flux or an axially directed flux. The rotor is rotatably coupled to the stator in axial alignment therewith by the time varying stator magnetic field. The rotor comprises a saw blade.Type: GrantFiled: August 24, 2017Date of Patent: November 3, 2020Assignee: Deere & CompanyInventors: Bhupesh Agrawal, Sean P. West, William E. Reeves, Bryon P. Neumann, Robert Salamon, Mark E. Breutzman
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Patent number: 10694687Abstract: A tree feller-buncher includes a felling head having a saw blade, an engine carried by an undercarriage, a hydraulic system operably connected to the engine, at least one transient operably connected to the hydraulic system, and an electric system operably connected to the engine, the electric system configured to operate the saw blade.Type: GrantFiled: August 11, 2017Date of Patent: June 30, 2020Assignee: DEERE & COMPANYInventors: Bhupesh Agrawal, Sean Patrick West
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Publication number: 20190289782Abstract: An electric walk behind greens mower includes an electric reel motor rotating a cutting reel; an electric traction motor rotating at least one traction drive roller; and an electronic control unit commanding the electric traction motor and the electric reel motor to rotate at reduced speeds during a turn if an electronic signal indicates a deviation from a normal walk speed. The electronic control unit also may determine if the actual speed of the electric traction motor is substantially less than the speed specified by a speed lever, and then command the electric reel motor and the electric traction motor to rotate at a lower speed than specified by the speed lever.Type: ApplicationFiled: June 11, 2019Publication date: September 26, 2019Inventors: Punamchandra Kulkarni, Sandip Edake, Saravanan Deenadayalan, Chinmay Deshpande, Rajesaheb Bagwan, Bhupesh Agrawal, Naveen Kumar
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Patent number: 10356977Abstract: An electric walk behind greens mower includes an electric reel motor rotating a cutting reel; an electric traction motor rotating at least one traction drive roller; and an electronic control unit commanding the electric traction motor and the electric reel motor to rotate at reduced speeds during a turn if an electronic signal indicates a deviation from a normal walk speed. The electronic control unit also may determine if the actual speed of the electric traction motor is substantially less than the speed specified by a speed lever, and then command the electric reel motor and the electric traction motor to rotate at a lower speed than specified by the speed lever.Type: GrantFiled: June 13, 2017Date of Patent: July 23, 2019Assignee: DEERE + CompanyInventors: Punamchandra Kulkarni, Sandip Edake, Saravanan Deenadayalan, Chinmay Deshpande, Rajesaheb Bagwan, Bhupesh Agrawal, Naveen Kumar
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Publication number: 20190059248Abstract: A forestry machine configured to cut timber, where the forestry machine comprises a felling head including a support frame having an accumulation pocket, an accumulating arm, and a harvest arm. The forestry machine further comprises a stator having coils thereon adapted to produce a time varying stator magnetic field, a rotor having at least either a set of slots or a set of permanent magnets mounted thereon facing the stator and adapted to produce a radially directed flux or an axially directed flux. The rotor is rotatably coupled to the stator in axial alignment therewith by the time varying stator magnetic field. The rotor comprises a saw blade.Type: ApplicationFiled: August 24, 2017Publication date: February 28, 2019Inventors: Bhupesh Agrawal, Sean P. West, William E. Reeves, Bryon P. Neumann, Robert Salamon, Mark E. Breutzman
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Publication number: 20190045727Abstract: A tree feller-buncher includes a felling head having a saw blade, an engine carried by an undercarriage, a hydraulic system operably connected to the engine, at least one transient operably connected to the hydraulic system, and an electric system operably connected to the engine, the electric system configured to operate the saw blade.Type: ApplicationFiled: August 11, 2017Publication date: February 14, 2019Inventors: Bhupesh Agrawal, Sean Patrick West
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Publication number: 20180352736Abstract: An electric walk behind greens mower includes an electric reel motor rotating a cutting reel; an electric traction motor rotating at least one traction drive roller; and an electronic control unit commanding the electric traction motor and the electric reel motor to rotate at reduced speeds during a turn if an electronic signal indicates a deviation from a normal walk speed. The electronic control unit also may determine if the actual speed of the electric traction motor is substantially less than the speed specified by a speed lever, and then command the electric reel motor and the electric traction motor to rotate at a lower speed than specified by the speed lever.Type: ApplicationFiled: June 13, 2017Publication date: December 13, 2018Inventors: Punamchandra Kulkarni, Sandip Edake, Saravanan Deenadayalan, Chinmay Deshpande, Rajesaheb Bagwan, Bhupesh Agrawal, Naveen Kumar