Patents by Inventor Rajesh Gopinath
Rajesh Gopinath 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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Publication number: 20240082810Abstract: The present invention discloses an adsorbent composition for removing halogen-containing contaminants such as hydrogen chloride from gas streams and a process for its formation. The adsorbent composition comprises an active metal component and a carrier or binder. The active metal component is selected from the group consisting of sodium, potassium, magnesium, calcium and barium and the carrier/binder is selected from a group of clay materials like sepiolite, montmorillonite, kaolin or attapulgite.Type: ApplicationFiled: January 29, 2022Publication date: March 14, 2024Inventors: Rekha Sree, Rajesh Gopinath, Sreekala Rugmini, Kishore Ravindran, Surya Prakash Babu, Iskander Altaf Lalljee, Arshia Altaf Lalljee
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Patent number: 11916378Abstract: A power generation system includes a power source that is configured to communicate with at least one of a downstream load or a downstream device by changing a voltage on a power bus between the power source and the at least one of the downstream load or the downstream device, while power source provides power on the power bus to the at least one of the downstream load or the downstream device.Type: GrantFiled: August 29, 2019Date of Patent: February 27, 2024Assignees: BLOOM ENERGY CORPORATION, POWERSECURE INCORPORATEDInventors: Arne Ballantine, Prasad Pmsvvsv, Rajesh Gopinath, Ranganathan Gurunathan, Robert Harris, Marshall Worth, Chaitanya Mandela, Vishal Anand Gopalakrishnan
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Publication number: 20230261519Abstract: A power generation system includes a power source that is configured to communicate with at least one of a downstream load or a downstream device by changing a voltage on a power bus between the power source and the at least one of the downstream load or the downstream device, while power source provides power on the power bus to the at least one of the downstream load or the downstream device.Type: ApplicationFiled: April 21, 2023Publication date: August 17, 2023Inventors: Arne BALLANTINE, Prasad PMSVVSV, Rajesh GOPINATH, Ranganathan GURUNATHAN, Robert HARRIS, Marshall WORTH, Chaitanya MANDELA, Vishal Anand GOPALAKRISHNAN
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Patent number: 11355955Abstract: A method of operating a power generation system, such as a fuel cell power generation system, includes providing a first electrical power up to a threshold amount of power to a load from at least one power module via a plurality of DC/DC converters and a DC power bus, determining whether electrical power from a utility is available, and providing a second electrical power from the at least one power module to a rectifier path via a plurality of DC/AC inverters in response to determining that the electrical power from the utility is available. The second electrical power includes electrical power generated by the at least one power module in excess of the threshold amount of electrical power.Type: GrantFiled: February 18, 2020Date of Patent: June 7, 2022Assignee: BLOOM ENERGY CORPORATIONInventors: Carl Cottuli, Rajesh Gopinath
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Patent number: 11128147Abstract: A system and method of provided power to one or more electrical loads of an electrical load module is provided. The electrical load module includes an alternating current (AC) power input port, a direct current (DC) power input port, a power distribution device, a first power supply device, a second power supply device, and a first electrical load component. The power distribution device is electrically coupled to the AC power input port via a first connector and the DC power input port via a second connection. The first electrical load component is coupled to the first power supply device and the second power supply device. The first power supply device and the second power supply device are configured to provide power to the first electrical load component and a feed from an alternative power source system is directly connected to the DC power input port of the electrical load module.Type: GrantFiled: April 4, 2018Date of Patent: September 21, 2021Assignee: BLOOM ENERGY CORPORATIONInventors: Arne Ballantine, Ranganathan Gurunathan, Rajesh Gopinath, Carl Cottuli
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Patent number: 10873099Abstract: Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid. A DC micro-grid may include power generators, energy storage devices, and loads coupled to a common DC bus. Power electronics devices may couple the power generators, energy storage devices, and loads to the common DC bus and provide power transfer.Type: GrantFiled: March 10, 2017Date of Patent: December 22, 2020Assignee: BLOOM ENERGY CORPORATIONInventors: Ranganathan Gurunathan, Arne Ballantine, Prasad Pmsvvsv, Rakesh Kumar Roy, Badrinarayanan Thiruvengadaswamy, Rajesh Gopinath, Saravanakumar Narayanasamy, Vishal Anand Gopalakrishnan, Anilkumar Vishnuvarjula, Tad Armstrong, Ian Russell
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Publication number: 20200266658Abstract: A method of operating a power generation system, such as a fuel cell power generation system, includes providing a first electrical power up to a threshold amount of power to a load from at least one power module via a plurality of DC/DC converters and a DC power bus, determining whether electrical power from a utility is available, and providing a second electrical power from the at least one power module to a rectifier path via a plurality of DC/AC inverters in response to determining that the electrical power from the utility is available. The second electrical power includes electrical power generated by the at least one power module in excess of the threshold amount of electrical power.Type: ApplicationFiled: February 18, 2020Publication date: August 20, 2020Inventors: Carl COTTULI, Rajesh GOPINATH
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Publication number: 20200076200Abstract: A power generation system includes a power source that is configured to communicate with at least one of a downstream load or a downstream device by changing a voltage on a power bus between the power source and the at least one of the downstream load or the downstream device, while power source provides power on the power bus to the at least one of the downstream load or the downstream device.Type: ApplicationFiled: August 29, 2019Publication date: March 5, 2020Inventors: Arne BALLANTINE, Prasad PMSVVSV, Rajesh GOPINATH, Ranganathan GURUNATHAN, Robert HARRIS, Marshall WORTH, Chaitanya MANDELA, Vishal Anand GOPALAKRISHNAN
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Publication number: 20190312441Abstract: A system and method of provided power to one or more electrical loads of an electrical load module is provided. The electrical load module includes an alternating current (AC) power input port, a direct current (DC) power input port, a power distribution device, a first power supply device, a second power supply device, and a first electrical load component. The power distribution device is electrically coupled to the AC power input port via a first connector and the DC power input port via a second connection. The first electrical load component is coupled to the first power supply device and the second power supply device. The first power supply device and the second power supply device are configured to provide power to the first electrical load component and a feed from an alternative power source system is directly connected to the DC power input port of the electrical load module.Type: ApplicationFiled: April 4, 2018Publication date: October 10, 2019Inventors: Arne BALLANTINE, Ranganathan GURUNATHAN, Rajesh GOPINATH, Carl COTTULI
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Patent number: 10203735Abstract: Systems and methods include a power module comprising at least one fuel cell generator for powering a load, and a bypass mechanism having a first, normally-open fast-acting switch that closes in 1-250 msec, and a second, normally-open switch in parallel with the first switch, the bypass mechanism being electrically connected between the load and a second power source, such as a grid source, where the first switch is configured to close in response to a fault event such that when the first switch is closed power to the load is provided from the second power source through the first switch, and the second switch closes after a predetermined time such that power to the load from the second source is provided through the second switch. Additional methods and systems include providing power to a plurality of loads using fuel cell power generators.Type: GrantFiled: March 18, 2013Date of Patent: February 12, 2019Assignee: BLOOM ENERGY CORPORATIONInventors: Peter Gross, James Daniel Smith, Rajesh Gopinath, Arne Ballantine
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Patent number: 9972852Abstract: Various embodiments enable the operation of fuel cell system support equipment using variable frequency drives and power from fuel cells and/or grid power sources.Type: GrantFiled: July 9, 2013Date of Patent: May 15, 2018Assignee: BLOOM ENERGY CORPORATIONInventors: Arne Ballantine, Ranganathan Gurunathan, Chad Pearson, Rajesh Gopinath, Carl Cottuli, James Daniel Smith
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Patent number: 9755501Abstract: An overvoltage snubber circuit configured to receive an alternating current (AC) overvoltage includes a first rectifier configured to convert the AC overvoltage to a direct current (DC) overvoltage, a chopper circuit electrically connected to the first rectifier and configured to break up the DC overvoltage and to output a variable DC voltage, and a resistor electrically connected to the chopper circuit and configured to dissipate energy of the variable DC voltage.Type: GrantFiled: December 10, 2014Date of Patent: September 5, 2017Assignee: BLOOM ENERGY CORPORATIONInventors: Rajesh Gopinath, Arne Ballantine, Carl Cottuli
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Publication number: 20160172963Abstract: An overvoltage snubber circuit configured to receive an alternating current (AC) overvoltage includes a first rectifier configured to convert the AC overvoltage to a direct current (DC) overvoltage, a chopper circuit electrically connected to the first rectifier and configured to break up the DC overvoltage and to output a variable DC voltage, and a resistor electrically connected to the chopper circuit and configured to dissipate energy of the variable DC voltage.Type: ApplicationFiled: December 10, 2014Publication date: June 16, 2016Inventors: Rajesh GOPINATH, Arne BALLANTINE, Carl COTTULI
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Publication number: 20140009003Abstract: Various embodiments enable the operation of fuel cell system support equipment using variable frequency drives and power from fuel cells and/or grid power sources.Type: ApplicationFiled: July 9, 2013Publication date: January 9, 2014Inventors: Arne Ballantine, Ranganathan Gurunathan, Chad Pearson, Rajesh Gopinath, Carl Cottuli, James Daniel Smith
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Publication number: 20130253716Abstract: Systems and methods include a power module comprising at least one fuel cell generator for powering a load, and a bypass mechanism having a first, normally-open fast-acting switch that closes in 1-250 msec, and a second, normally-open switch in parallel with the first switch, the bypass mechanism being electrically connected between the load and a second power source, such as a grid source, where the first switch is configured to close in response to a fault event such that when the first switch is closed power to the load is provided from the second power source through the first switch, and the second switch closes after a predetermined time such that power to the load from the second source is provided through the second switch. Additional methods and systems include providing power to a plurality of loads using fuel cell power generators.Type: ApplicationFiled: March 18, 2013Publication date: September 26, 2013Applicant: BLOOM ENERGY CORPORATIONInventors: Peter Gross, James Daniel Smith, Rajesh Gopinath, Arne Ballantine
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Patent number: 7696647Abstract: A coupling node for regulating the current flow between two or more drives is described. The coupling node may include an interconnect circuit in communication with the drives for selectively opening the connection between the drives. A sensor circuit in communication with the drives measures one or more electrical properties of the drives or between the drives. A sensor circuit actuates the interconnect circuit in response to the measured electrical property of the two or more drives meeting predetermined criteria. In operation, when an electrical property of the drives, such as the current flowing between the drives, meets a predetermined criteria, such as an short circuit or current overload, as indicated by the sensor circuit, the controller actuates the interconnect circuit to open the connection between the drives.Type: GrantFiled: September 15, 2004Date of Patent: April 13, 2010Assignee: Toshiba International Corp.Inventors: Mark D Rayner, Rajesh Gopinath, Rahul Khopkar
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Publication number: 20050083624Abstract: A coupling node for regulating the current flow between two or more drives is described. The coupling node may include an interconnect circuit in communication with the drives for selectively opening the connection between the drives. A sensor circuit in communication with the drives measures one or more electrical properties of the drives or between the drives. A sensor circuit actuates the interconnect circuit in response to the measured electrical property of the two or more drives meeting predetermined criteria. In operation, when an electrical property of the drives, such as the current flowing between the drives, meets a predetermined criteria, such as an short circuit or current overload, as indicated by the sensor circuit, the controller actuates the interconnect circuit to open the connection between the drives.Type: ApplicationFiled: September 15, 2004Publication date: April 21, 2005Applicant: Toshiba International CorporationInventors: Mark Rayner, Rajesh Gopinath, Rahul Khopkar
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Patent number: 6566292Abstract: The present invention relates to enhancement of the cycle life of a zinc chromium based catalyst used in the synthesis of 2-methylpyrazine by increasing the reaction temperature step-wise, starting from a low temperature, while monitoring the levels of total conversion and selectivity towards pyrazine. The catalyst can be regenerated after each cycle of use without substantial loss of activity.Type: GrantFiled: March 27, 2001Date of Patent: May 20, 2003Assignee: Council of Scientific and Industrial ResearchInventors: Sai Prasad Potharaju Seetharamanjaneya, Kondapuram Vijaya Raghavan, Panja Kanta Rao, Shivanand Janardan Kulkarni, Katabathini Narasimha Rao, Rajesh Gopinath, Suresh Farsinavis, Harshadas Mitaram Meshram
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Publication number: 20020143180Abstract: The present invention relates to enhancement of the cycle life of a zinc chromium based catalyst used in the synthesis of 2-methylpyrazine by increasing the reaction temperature step-wise, starting from a low temperature, while monitoring the levels of total conversion and selectivity towards pyrazine. The catalyst can be regenerated after each cycle of use without substantial loss of activity.Type: ApplicationFiled: March 27, 2001Publication date: October 3, 2002Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCHInventors: Sai Prasad Potharaju Seetharamanjaneya, Kondapuram Vijaya Raghavan, Panja Kanta Rao, Shivanand Janardan Kulkarni, Katabathini Narasimha Rao, Rajesh Gopinath, Suresh Farsinavis, Harshadas Mitaram Meshram