Patents by Inventor Venkatraman Chennakesavan
Venkatraman Chennakesavan 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: 20240113552Abstract: Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.Type: ApplicationFiled: December 13, 2023Publication date: April 4, 2024Inventors: Kenneth A. Colby, JR., Wei-Hsiang Lin, Venkatraman Chennakesavan, Eyob Demissie, Luka Petrovic, Himamshu V Prasad, Yu Zhang
-
Patent number: 11909258Abstract: Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.Type: GrantFiled: March 18, 2022Date of Patent: February 20, 2024Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Kenneth A. Colby, Jr., Wei-Hsiang Lin, Venkatraman Chennakesavan, Eyob Demissie, Luka Petrovic, Himamshu V Prasad, Yu Zhang
-
Publication number: 20220302747Abstract: Power supplies and methods of use thereof are provided, where a power supply includes an input configured to receive input AC power an output configured to provide output AC power to a load, at least one power converter coupled to the input and configured to convert the input AC power into the output AC power, a controller coupled the at least one power converter. The controller is configured to adjust at least one parameter of the output AC power provided by the at least one power converter, detect, in response to adjusting the at least one parameter of the output AC power, at least one of an adjusted input AC power or an adjusted output AC power, and determine that a fault has occurred based on the at least one of the adjusted input AC power or the adjusted output AC power.Type: ApplicationFiled: March 18, 2022Publication date: September 22, 2022Inventors: Kenneth A. Colby, JR., Wei-Hsiang Lin, Venkatraman Chennakesavan, Eyob Demissie, Luka Petrovic, Himamshu V Prasad, Yu Zhang
-
Patent number: 10170257Abstract: A relay control circuit for use with a relay having a coil voltage input. The relay control circuit includes a first input to receive a first voltage capable of energizing the relay, a second input to receive a second voltage, less than the first voltage, that is capable of maintaining the relay in an energized state, and means, responsive to a relay control signal having one of a first state and a second state, for switchably coupling the coil voltage input to the first input in response to the relay control signal having the first state, and for switchably coupling the coil voltage input to the second input in response to the relay control signal having the second state.Type: GrantFiled: January 10, 2013Date of Patent: January 1, 2019Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventor: Venkatraman Chennakesavan
-
Publication number: 20150357141Abstract: A relay control circuit for use with a relay having a coil voltage input. The relay control circuit includes a first input to receive a first voltage capable of energizing the relay, a second input to receive a second voltage, less than the first voltage, that is capable of maintaining the relay in an energized state, and means, responsive to a relay control signal having one of a first state and a second state, for switchably coupling the coil voltage input to the first input in response to the relay control signal having the first state, and for switchably coupling the coil voltage input to the second input in response to the relay control signal having the second state.Type: ApplicationFiled: January 10, 2013Publication date: December 10, 2015Inventor: Venkatraman Chennakesavan
-
Patent number: 9172271Abstract: According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS coupled in parallel to provide output power to a load from a power source, each of the first UPS and the second UPS having an inverter and having a bypass switch, with each UPS configured to operate in one of an inverter mode in which output power is derived from the power source through the inverter, and a bypass mode in which output power is derived from the power source bypassing the inverter, the method comprising powering on the first UPS and the second UPS in the inverter mode of operation, designating one of the first UPS and the second UPS as a master UPS, and controlling the bypass switch of the first UPS and the bypass switch of the second UPS using the master UPS.Type: GrantFiled: September 19, 2011Date of Patent: October 27, 2015Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Mirza Akmal Beg, Eyob Demissie, Venkatraman Chennakesavan, Michael J. Ingemi
-
Patent number: 8896152Abstract: An uninterruptible power supply includes a first input to receive input power from an input power source, an output to provide output power, a switch, a first logic power supply coupled to the switch, a back-up power source, a charger, a main logic power supply and power converter circuitry. The switch is configured to close when a characteristic of the input power is within a selected range. The first logic power supply is coupled to the switch and configured to receive input power from the input power source when the switch is closed. The first logic power supply has a first DC output. The back-up power source has a second DC output and is coupled to the first DC output at a common node. The charger has a third DC output and is coupled to the common node. The main logic power supply is coupled to the common node and is configured to receive at least one of the first DC output, the second DC output and the third DC output.Type: GrantFiled: June 30, 2011Date of Patent: November 25, 2014Assignee: Schneider Electric IT CorporationInventors: Mirza A. Beg, Venkatraman Chennakesavan, Michael J. Ingemi, David E. Reilly, Rajesh Ghosh, Indra Prakash
-
Patent number: 8772964Abstract: According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS, the method comprising powering on the first UPS, detecting a first signal at a first I/O of the first UPS using a first detection circuit of the first UPS, detecting a second signal at a second I/O of the first UPS using a second detection circuit of the first UPS, based on a status of the first signal and a status of the second signal, configuring the first UPS to operate in one of a master mode of operation and a controlled mode of operation.Type: GrantFiled: September 19, 2011Date of Patent: July 8, 2014Assignee: Schneider Electric IT CorporationInventors: Mirza Akmal Beg, Eyob Demissie, Venkatraman Chennakesavan, Michael J. Ingemi
-
Patent number: 8456036Abstract: An uninterruptible power supply (“UPS”) includes an input module having a plurality of inputs, and at least one jumper element configured to selectively couple at least one input of the plurality of inputs to at least one other input of the plurality of inputs. The plurality of inputs and the at least one jumper element may be constructed and arranged to selectively achieve the following configurations: single power feed, single phase input and single phase output; dual power feed, single phase input and single phase output; single power feed, three phase input and single phase output; dual power feed, three phase input and single phase output; single power feed, three phase input and three phase output; and dual power feed, three phase input and three phase output. Other embodiments and methods of selectively achieving multiple power configurations are also disclosed.Type: GrantFiled: August 23, 2010Date of Patent: June 4, 2013Assignee: Schneider Electric IT CorporationInventors: Edward Kotlyar, Mirza A. Beg, Marcel B. Grenier, Venkatraman Chennakesavan
-
Publication number: 20130069434Abstract: According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS, the method comprising powering on the first UPS, detecting a first signal at a first I/O of the first UPS using a first detection circuit of the first UPS, detecting a second signal at a second I/O of the first UPS using a second detection circuit of the first UPS, based on a status of the first signal and a status of the second signal, configuring the first UPS to operate in one of a master mode of operation and a controlled mode of operation.Type: ApplicationFiled: September 19, 2011Publication date: March 21, 2013Applicant: American Power Conversion CorporationInventors: Mirza Akmal Beg, Eyob Demissie, Venkatraman Chennakesavan, Michael J. Ingemi
-
Publication number: 20130069432Abstract: According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS and a second UPS coupled in parallel to provide output power to a load from a power source, each of the first UPS and the second UPS having an inverter and having a bypass switch, with each UPS configured to operate in one of an inverter mode in which output power is derived from the power source through the inverter, and a bypass mode in which output power is derived from the power source bypassing the inverter, the method comprising powering on the first UPS and the second UPS in the inverter mode of operation, designating one of the first UPS and the second UPS as a master UPS, and controlling the bypass switch of the first UPS and the bypass switch of the second UPS using the master UPS.Type: ApplicationFiled: September 19, 2011Publication date: March 21, 2013Applicant: AMERICAN POWER CONVERSION CORPORATIONInventors: Mirza Akmal Beg, Eyob Demissie, Venkatraman Chennakesavan, Michael J. Ingemi
-
Publication number: 20130002024Abstract: An uninterruptible power supply includes a first input to receive input power from an input power source, an output to provide output power, a switch, a first logic power supply coupled to the switch, a back-up power source, a charger, a main logic power supply and power converter circuitry. The switch is configured to close when a characteristic of the input power is within a selected range. The first logic power supply is coupled to the switch and configured to receive input power from the input power source when the switch is closed. The first logic power supply has a first DC output. The back-up power source has a second DC output and is coupled to the first DC output at a common node. The charger has a third DC output and is coupled to the common node. The main logic power supply is coupled to the common node and is configured to receive at least one of the first DC output, the second DC output and the third DC output.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Inventors: Mirza A. Beg, Venkatraman Chennakesavan, Michael J. Ingemi, David E. Reilly, Rajesh Ghosh, Indra Prakash
-
Publication number: 20100314944Abstract: An uninterruptible power supply (“UPS”) includes an input module having a plurality of inputs, and at least one jumper element configured to selectively couple at least one input of the plurality of inputs to at least one other input of the plurality of inputs. The plurality of inputs and the at least one jumper element may be constructed and arranged to selectively achieve the following configurations: single power feed, single phase input and single phase output; dual power feed, single phase input and single phase output; single power feed, three phase input and single phase output; dual power feed, three phase input and single phase output; single power feed, three phase input and three phase output; and dual power feed, three phase input and three phase output. Other embodiments and methods of selectively achieving multiple power configurations are also disclosed.Type: ApplicationFiled: August 23, 2010Publication date: December 16, 2010Applicant: AMERICAN POWER CONVERSION CORPORATIONInventors: Edward Kotlyar, Mirza Akmal Beg, Marcel Bertrand Grenier, Venkatraman Chennakesavan
-
Patent number: 7781914Abstract: An uninterruptible power supply (“UPS”) includes an input module having a plurality of inputs, and at least one jumper element configured to selectively couple at least one input of the plurality of inputs to at least one other input of the plurality of inputs. The plurality of inputs and the at least one jumper element may be constructed and arranged to selectively achieve the following configurations: single power feed, single phase input and single phase output; dual power feed, single phase input and single phase output; single power feed, three phase input and single phase output; dual power feed, three phase input and single phase output; single power feed, three phase input and three phase output; and dual power feed, three phase input and three phase output. Other embodiments and methods of selectively achieving multiple power configurations are also disclosed.Type: GrantFiled: August 10, 2007Date of Patent: August 24, 2010Assignee: American Power Conversion CorporationInventors: Edward Kotlyar, Mirza Akmal Beg, Marcel Bertrand Grenier, Venkatraman Chennakesavan
-
Publication number: 20090039706Abstract: An uninterruptible power supply (“UPS”) includes an input module having a plurality of inputs, and at least one jumper element configured to selectively couple at least one input of the plurality of inputs to at least one other input of the plurality of inputs. The plurality of inputs and the at least one jumper element may be constructed and arranged to selectively achieve the following configurations: single power feed, single phase input and single phase output; dual power feed, single phase input and single phase output; single power feed, three phase input and single phase output; dual power feed, three phase input and single phase output; single power feed, three phase input and three phase output; and dual power feed, three phase input and three phase output. Other embodiments and methods of selectively achieving multiple power configurations are also disclosed.Type: ApplicationFiled: August 10, 2007Publication date: February 12, 2009Applicant: AMERICAN POWER CONVERSION CORPORATIONInventors: Edward Kotlyar, Mirza Akmal Beg, Marcel Bertrand Grenier, Venkatraman Chennakesavan