Patents by Inventor Chandrasekaran Jayaraman
Chandrasekaran Jayaraman 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).
-
Patent number: 11955833Abstract: According to aspects of the disclosure, an uninterruptible power supply is provided comprising an input configured to be coupled to, and receive input power from, a circuit breaker, an output configured to be coupled to, and provide output power to, at least one load, an energy-storage-device interface configured to be coupled to, and receive back-up power from, an energy-storage device, and at least one controller configured to determine whether a current through the circuit breaker meets at least one over-current criterion, and control, responsive to determining that the current through the circuit breaker meets the at least one over-current criterion, the uninterruptible power supply to provide the output power to the load, the output power being derived from the input power and the back-up power.Type: GrantFiled: January 11, 2022Date of Patent: April 9, 2024Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Anil Cheniveettil Suresh, Himamshu V Prasad, Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao
-
Patent number: 11942607Abstract: Examples of the disclosure include a battery system comprising an output configured to provide output power to a load, one or more battery cells configured to store electrical energy to provide to the load, and a battery management system configured to receive one or more operational parameters of the battery system, determine whether the one or more operational parameters are less than at least one operational-parameter threshold, modify a discharge threshold of the one or more battery cells responsive to determining that the one or more operational parameters are less than the at least one operational-parameter threshold, and control the battery system to be in a battery-optimization mode responsive to determining that a discharge level of the one or more battery cells is below the discharge threshold.Type: GrantFiled: August 30, 2021Date of Patent: March 26, 2024Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Nagaraju Ingurthi, Sivanageswararao Uddanti, Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao
-
Publication number: 20240006912Abstract: According to at least one aspect of the disclosure, a uninterruptible power supply includes a first input configured to be coupled to, and receive main power from, a main power source, a second input configured to be coupled to, and receive backup power from, a backup power source, an output configured to be coupled to at least one load, at least one current sensor, a four-quadrant inverter coupled to the first input, the second input, and the output, and at least one controller configured to control the four-quadrant inverter to provide power derived from the first input to the second input to charge the backup power source, and provide power derived from the second input to the output to supplement the main power.Type: ApplicationFiled: June 30, 2022Publication date: January 4, 2024Inventors: Pradeep Tolakanahalli Nagabhushanrao, Chandrasekaran Jayaraman, Anil Cheniveettil Suresh
-
Publication number: 20230353064Abstract: According to at least one aspect of the disclosure, an inverter is provided comprising an input configured to receive input DC power from a DC source, an output configured to provide output AC power to a load, a plurality of DC rails coupled to the input and configured to receive the input DC power from the DC source, a plurality of switches coupled between the plurality of DC rails and configured to convert the input DC power into the output AC power, each switch of the plurality of switches having a parasitic capacitance, and at least one ZVS network coupled across at least two switches of the plurality of switches, the ZVS network including at least two inductors configured to resonate with the parasitic capacitance of at least one switch of the plurality of switches to provide soft switching of at least one switch of the plurality of switches.Type: ApplicationFiled: June 21, 2023Publication date: November 2, 2023Inventors: Indra Prakash, Damir Klikic, Chandrasekaran Jayaraman
-
Publication number: 20230336019Abstract: According to an aspect of the present disclosure, an uninterruptible power supply (UPS) system is provided. The UPS system includes a first input configured to be coupled to an input power source, a second input configured to be coupled to an energy storage device, an output configured to provide output power, a power conversion circuit (PCC) configured to convert power received from at least one of the input power source or the energy storage device, an output circuit coupled to the PCC and the output, and a controller. The PCC includes a first inductor and a second inductor magnetically coupled to the first inductor. The controller is configured to control the PCC to provide, via the first inductor, DC power derived from the input power source to the output circuit, and provide, via the first and second inductors, DC power derived from the energy storage device to the output circuit.Type: ApplicationFiled: June 23, 2023Publication date: October 19, 2023Inventors: Pradeep Tolakanahalli Nagabhushanrao, Chandrasekaran Jayaraman
-
Publication number: 20230290506Abstract: Systems and methods for rapid screening of signs and symptoms associated with disorders are disclosed. A processor or processing element in operable communication with one or more sensors is configured to detect physiological and movement changes associated with a disorder based on signals derived from sensor data generated by the one or more sensors as a user performs a set of predetermined scripted activities.Type: ApplicationFiled: July 22, 2021Publication date: September 14, 2023Inventors: Arun Jarayaman, Luca Lonini, Chandrasekaran Jayaraman, Olivia Botonis, Sung Yul Shin, Nicholas Shawen, Chaithanya Krishna Mummidisetty, Sophia T. Jenz, Michael Fanton
-
Patent number: 11735952Abstract: According to an aspect of the present disclosure, an uninterruptible power supply (UPS) system is provided. The UPS system includes a first input configured to be coupled to an input power source, a second input configured to be coupled to an energy storage device, an output configured to provide output power, a power conversion circuit (PCC) configured to convert power received from at least one of the input power source or the energy storage device, an output circuit coupled to the PCC and the output, and a controller. The PCC includes a first inductor and a second inductor magnetically coupled to the first inductor. The controller is configured to control the PCC to provide, via the first inductor, DC power derived from the input power source to the output circuit, and provide, via the first and second inductors, DC power derived from the energy storage device to the output circuit.Type: GrantFiled: August 7, 2020Date of Patent: August 22, 2023Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Pradeep Tolakanahalli Nagabhushanrao, Chandrasekaran Jayaraman
-
Patent number: 11728747Abstract: According to at least one aspect of the disclosure, an inverter is provided comprising an input configured to receive input DC power from a DC source, an output configured to provide output AC power to a load, a plurality of DC rails coupled to the input and configured to receive the input DC power from the DC source, a plurality of switches coupled between the plurality of DC rails and configured to convert the input DC power into the output AC power, each switch of the plurality of switches having a parasitic capacitance, and at least one ZVS network coupled across at least two switches of the plurality of switches, the ZVS network including at least two inductors configured to resonate with the parasitic capacitance of at least one switch of the plurality of switches to provide soft switching of at least one switch of the plurality of switches.Type: GrantFiled: July 27, 2021Date of Patent: August 15, 2023Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Indra Prakash, Damir Klikic, Chandrasekaran Jayaraman
-
Publication number: 20230106209Abstract: Aspects of the disclosure include a power-conversion system comprising an input, an output, a DC/DC converter coupled to the input, a DC/AC inverter coupled to the DC/DC converter and coupled to the output, and at least one controller coupled to the DC/DC converter and the DC/AC inverter, the at least one controller being configured to control the DC/DC converter to draw input power from the input and provide converted power to the DC/AC inverter, and control the DC/AC inverter to receive the converted power and provide output power to the output in synchronization with the DC/DC converter drawing the input power from the input.Type: ApplicationFiled: August 31, 2022Publication date: April 6, 2023Inventors: Anil Cheniveettil Suresh, Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao
-
Patent number: 11611232Abstract: A power system including an input configured to receive input AC power, a DC output configured to provide output DC power to a load, an AC output configured to provide output AC power to the load, an AC/DC converter coupled to the input and configured to convert the input AC power into DC power, a DC bus, and a controller configured to monitor a current demand at the DC output relative to a demand threshold, operate, in response to a determination that the current demand at the DC output is below the demand threshold, the power system in a first mode of operation by enabling the AC/DC converter to provide DC power to the DC bus, and operate, in response to a determination that the current demand at the DC output is above the demand threshold, the power system in a second mode of operation by disabling the AC/DC converter.Type: GrantFiled: June 10, 2022Date of Patent: March 21, 2023Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao, Pavan Kumar Gudipalli, Nagaraju Ingurthi
-
Publication number: 20220302748Abstract: A power system including an input configured to receive input AC power, a DC output configured to provide output DC power to a load, an AC output configured to provide output AC power to the load, an AC/DC converter coupled to the input and configured to convert the input AC power into DC power, a DC bus, and a controller configured to monitor a current demand at the DC output relative to a demand threshold, operate, in response to a determination that the current demand at the DC output is below the demand threshold, the power system in a first mode of operation by enabling the AC/DC converter to provide DC power to the DC bus, and operate, in response to a determination that the current demand at the DC output is above the demand threshold, the power system in a second mode of operation by disabling the AC/DC converter.Type: ApplicationFiled: June 10, 2022Publication date: September 22, 2022Inventors: Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao, Pavan Kumar Gudipalli, Nagaraju Ingurthi
-
Publication number: 20220224143Abstract: According to aspects of the disclosure, an uninterruptible power supply is provided comprising an input configured to be coupled to, and receive input power from, a circuit breaker, an output configured to be coupled to, and provide output power to, at least one load, an energy-storage-device interface configured to be coupled to, and receive back-up power from, an energy-storage device, and at least one controller configured to determine whether a current through the circuit breaker meets at least one over-current criterion, and control, responsive to determining that the current through the circuit breaker meets the at least one over-current criterion, the uninterruptible power supply to provide the output power to the load, the output power being derived from the input power and the back-up power.Type: ApplicationFiled: January 11, 2022Publication date: July 14, 2022Inventors: Anil Cheniveettil Suresh, Himamshu V Prasad, Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao
-
Patent number: 11387670Abstract: An Uninterruptible Power Supply (UPS) system, the UPS system comprising an input configured to receive input AC power having an input voltage level and an input frequency, an output configured to provide output AC power to a load, the output power having an output voltage level and an output frequency, a converter coupled to the input and configured to convert the input AC power into DC power, an inverter coupled to the output and configured to convert the DC power into the output AC power and provide the output AC power to the output, a DC bus coupled between the converter and the inverter including a first capacitive element and a second capacitive element, the first capacitive element being coupled to a first output and a second output of the converter and the second capacitive element being coupled to a first input and a second input of the inverter, a de-coupler circuit coupled between the first and second capacitive elements and configured to selectively decouple the inverter from the converter, and a cType: GrantFiled: January 29, 2021Date of Patent: July 12, 2022Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Pradeep Tolakanahalli Nagabhushanrao, Chandrasekaran Jayaraman, Anil Cheniveettil Suresh
-
Patent number: 11381107Abstract: An Uninterruptible Power Supply (UPS) including an input configured to receive input AC power, a DC output configured to provide output DC power to a load, an AC output configured to provide output AC power to the load, a charger coupled to the input and configured to convert the input AC power into DC power, a DC bus, and a controller configured to monitor a current demand at the DC output relative to a demand threshold, operate, in response to a determination that the current demand at the DC output is below the demand threshold, the UPS in a first mode of operation by enabling the charger to provide DC power to the DC bus, and operate, in response to a determination that the current demand at the DC output is above the demand threshold, the UPS in a second mode of operation by disabling the charger.Type: GrantFiled: December 4, 2020Date of Patent: July 5, 2022Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao, Pavan Kumar Gudipalli, Nagaraju Ingurthi
-
Patent number: 11283288Abstract: According to one aspect, embodiments of the invention provide a UPS comprising a line input, an interface configured to be coupled to a DC power source, an output, a PFC converter, a positive DC bus coupled to the PFC converter and configured to provide a positive DC output, a negative DC bus coupled to the PFC converter and configured to provide a negative DC output, a DC-DC converter coupled to the interface, and a controller configured to operate, in an online mode of operation, the PFC converter to provide regulated DC power, derived from input AC power, to the positive DC bus and the negative DC bus, and operate, in a backup mode of operation, the DC-DC converter to convert backup DC power to unregulated power, and the PFC converter to provide regulated DC power, derived from the unregulated power, to the positive DC bus and the negative DC bus.Type: GrantFiled: June 13, 2019Date of Patent: March 22, 2022Assignee: SCHNEIDER ELECTRIC IT CORPORATIONInventors: Pradeep Tolakanahalli Nagabhushanrao, Chandrasekaran Jayaraman, Hariom Agrawal
-
Publication number: 20220069365Abstract: Examples of the disclosure include a battery system comprising an output configured to provide output power to a load, one or more battery cells configured to store electrical energy to provide to the load, and a battery management system configured to receive one or more operational parameters of the battery system, determine whether the one or more operational parameters are less than at least one operational-parameter threshold, modify a discharge threshold of the one or more battery cells responsive to determining that the one or more operational parameters are less than the at least one operational-parameter threshold, and control the battery system to be in a battery-optimization mode responsive to determining that a discharge level of the one or more battery cells is below the discharge threshold.Type: ApplicationFiled: August 30, 2021Publication date: March 3, 2022Inventors: Nagaraju Ingurthi, Sivanageswararao Uddanti, Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao
-
Publication number: 20220038029Abstract: According to at least one aspect of the disclosure, an inverter is provided comprising an input configured to receive input DC power from a DC source, an output configured to provide output AC power to a load, a plurality of DC rails coupled to the input and configured to receive the input DC power from the DC source, a plurality of switches coupled between the plurality of DC rails and configured to convert the input DC power into the output AC power, each switch of the plurality of switches having a parasitic capacitance, and at least one ZVS network coupled across at least two switches of the plurality of switches, the ZVS network including at least two inductors configured to resonate with the parasitic capacitance of at least one switch of the plurality of switches to provide soft switching of at least one switch of the plurality of switches.Type: ApplicationFiled: July 27, 2021Publication date: February 3, 2022Inventors: Indra Prakash, Damir Klikic, Chandrasekaran Jayaraman
-
Publication number: 20210249899Abstract: An Uninterruptible Power Supply (UPS) system, the UPS system comprising an input configured to receive input AC power having an input voltage level and an input frequency, an output configured to provide output AC power to a load, the output power having an output voltage level and an output frequency, a converter coupled to the input and configured to convert the input AC power into DC power, an inverter coupled to the output and configured to convert the DC power into the output AC power and provide the output AC power to the output, a DC bus coupled between the converter and the inverter including a first capacitive element and a second capacitive element, the first capacitive element being coupled to a first output and a second output of the converter and the second capacitive element being coupled to a first input and a second input of the inverter, a de-coupler circuit coupled between the first and second capacitive elements and configured to selectively decouple the inverter from the converter, and a cType: ApplicationFiled: January 29, 2021Publication date: August 12, 2021Inventors: Pradeep Tolakanahalli Nagabhushanrao, Chandrasekaran Jayaraman, Anil Cheniveettil Suresh
-
Publication number: 20210194276Abstract: An Uninterruptible Power Supply (UPS) including an input configured to receive input AC power, a DC output configured to provide output DC power to a load, an AC output configured to provide output AC power to the load, a charger coupled to the input and configured to convert the input AC power into DC power, a DC bus, and a controller configured to monitor a current demand at the DC output relative to a demand threshold, operate, in response to a determination that the current demand at the DC output is below the demand threshold, the UPS in a first mode of operation by enabling the charger to provide DC power to the DC bus, and operate, in response to a determination that the current demand at the DC output is above the demand threshold, the UPS in a second mode of operation by disabling the charger.Type: ApplicationFiled: December 4, 2020Publication date: June 24, 2021Inventors: Chandrasekaran Jayaraman, Pradeep Tolakanahalli Nagabhushanrao, Pavan Kumar Gudipalli, Nagaraju Ingurthi
-
Publication number: 20210044140Abstract: According to an aspect of the present disclosure, an uninterruptible power supply (UPS) system is provided. The UPS system includes a first input configured to be coupled to an input power source, a second input configured to be coupled to an energy storage device, an output configured to provide output power, a power conversion circuit (PCC) configured to convert power received from at least one of the input power source or the energy storage device, an output circuit coupled to the PCC and the output, and a controller. The PCC includes a first inductor and a second inductor magnetically coupled to the first inductor. The controller is configured to control the PCC to provide, via the first inductor, DC power derived from the input power source to the output circuit, and provide, via the first and second inductors, DC power derived from the energy storage device to the output circuit.Type: ApplicationFiled: August 7, 2020Publication date: February 11, 2021Inventors: Pradeep Tolakanahalli Nagabhushanrao, Chandrasekaran Jayaraman