Patents by Inventor Anshuman Shukla
Anshuman Shukla 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: 11532996Abstract: Accordingly, the embodiments herein provide a hybrid modular multilevel converter. The hybrid modular multilevel converter includes one or more chain links, one or more high voltage switches and a plurality of inductors. The one or more chain links are formed by sub modules. The one or more high voltage switches are formed by semi-controlled devices or fully controlled or any other suitable semiconductor devices. The plurality of inductors are arranged in the one or more chain links to limit circulating current among the one or more chain links. The one or more chain links are configured to enhance a power handling capability of the hybrid modular multilevel converter.Type: GrantFiled: November 19, 2018Date of Patent: December 20, 2022Assignee: INDIAN INSTITUTE OF TECHNOLOGY BOMBAYInventors: Anshuman Shukla, Siba Kumar Patro
-
Patent number: 11152863Abstract: Embodiments herein provide a system and method for controlling extraction of power from multiple Photo Voltaic (PV) arrays. At least two converters and at least two Photo Voltaic (PV) arrays are configured. The power extraction is controlled through one of an injection of Direct Current (Idc) into output current of each of the at least two converters, or by performing a phase shifting of each of the output current of each of the at least two converters.Type: GrantFiled: July 17, 2019Date of Patent: October 19, 2021Assignee: INDIAN INSTITUTE OF TECHNOLOGY BOMBAYInventors: Abhijit Kadam, Anshuman Shukla
-
Publication number: 20200028440Abstract: Embodiments herein provide a system and method for controlling extraction of power from multiple Photo Voltaic (PV) arrays. At least two converters and at least two Photo Voltaic (PV) arrays are configured. The power extraction is controlled through one of an injection of Direct Current (Idc) into output current of each of the at least two converters, or by performing a phase shifting of each of the output current of each of the at least two converters.Type: ApplicationFiled: July 17, 2019Publication date: January 23, 2020Inventors: Abhijit Kadam, Prof. Anshuman Shukla
-
Publication number: 20190305691Abstract: Accordingly, the embodiments herein provide a hybrid modular multilevel converter. The hybrid modular multilevel converter includes one or more chain links, one or more high voltage switches and a plurality of inductors. The one or more chain links are formed by sub modules. The one or more high voltage switches are formed by semi-controlled devices or fully controlled or any other suitable semiconductor devices. The plurality of inductors are arranged in the one or more chain links to limit circulating current among the one or more chain links. The one or more chain links are configured to enhance a power handling capability of the hybrid modular multilevel converter.Type: ApplicationFiled: November 19, 2018Publication date: October 3, 2019Inventors: Anshuman Shukla, Siba Kumar Patro
-
Patent number: 10224716Abstract: Embodiments herein provide an ACsDC converter for generating an ACsDC signal in which AC or DC source can be used to generate the ACsDC signal. The structure of the ACsDC converter consists of three stages, viz., input, isolation, and output. At the input stage, a DC voltage is converted to two AC voltages using power electronic converters. The isolation stage consists of transformers for isolating load and source terminals. The secondary voltages of the isolation transformers are used for obtaining the AC and DC components of the ACsDC signal. At the output stage, the AC component of the output voltage is obtained by using an AC-DC converter and a DC-AC converter. The magnitude, phase, and frequency of the AC component can be controlled. The magnitude of the DC component is controlled using a modulation technique. The AC and the DC component can be combined to obtain the ACsDC signal.Type: GrantFiled: September 12, 2017Date of Patent: March 5, 2019Assignee: INDIAN INSTITUTE OF TECHNOLOGY BOMBAYInventors: Venkat Nag Someswar Rao Jakka, Anshuman Shukla, Shrikrishna Vyankatesh Kulkarni
-
Patent number: 9979318Abstract: Embodiments herein disclose a hybrid multilevel inverter configured to obtain N-level output voltages based on operating one of FCs and a plurality of switches. In an embodiment, the multilevel inverter is a Neutral Point Clamped (NPC) Flying Capacitor (FC) based hybrid multilevel inverter. In an embodiment, the multilevel inverter is a stacked multi-cell NPC multilevel inverter.Type: GrantFiled: November 17, 2016Date of Patent: May 22, 2018Assignee: Indian Institute of Technology BombayInventors: Abhijit Kadam, Anshuman Shukla
-
Publication number: 20180097361Abstract: Embodiments herein provide an ACsDC converter for generating an ACsDC signal in which AC or DC source can be used to generate the ACsDC signal. The structure of the ACsDC converter consists of three stages, viz., input, isolation, and output. At the input stage, a DC voltage is converted to two AC voltages using power electronic converters. The isolation stage consists of transformers for isolating load and source terminals. The secondary voltages of the isolation transformers are used for obtaining the AC and DC components of the ACsDC signal. At the output stage, the AC component of the output voltage is obtained by using an AC-DC converter and a DC-AC converter. The magnitude, phase, and frequency of the AC component can be controlled. The magnitude of the DC component is controlled using a modulation technique. The AC and the DC component can be combined to obtain the ACsDC signal.Type: ApplicationFiled: September 12, 2017Publication date: April 5, 2018Inventors: Venkat Nag Someswar Rao Jakka, Anshuman Shukla, Shrikrishna Vyankatesh Kulkarni
-
Patent number: 9806633Abstract: Embodiments herein provide a modular multilevel converter configured to increase one of number of an output voltage level and an output current level. The modular multilevel converter includes a plurality of legs where each leg includes a plurality of arms. Each arm of the modular multilevel voltage source converter includes a main wave shaping (WS) circuit, an auxiliary WS circuit and an arm inductor. The main WS circuit includes one or more half bridge sub-module(s) that includes a capacitor. The auxiliary WS circuit includes one or more full bridge sub-module(s) that includes a capacitor. Each arm of the modular multilevel current source converter comprises a plurality of half-bridge modules connected in parallel, and a plurality of arm capacitor connected across the plurality of half-bridge modules and one or more auxiliary full bridge module(s).Type: GrantFiled: February 4, 2016Date of Patent: October 31, 2017Assignee: INDIAN INSTITUTE OF TECHNOLOGY BOMBAYInventors: Ebin Cherian Mathew, Anshuman Shukla, Mahendra Ghat, Mukeshkumar Mohanbhai Bhesaniya
-
Publication number: 20170194877Abstract: Embodiments herein disclose a hybrid multilevel inverter configured to obtain N-level output voltages based on operating one of FCs and a plurality of switches. In an embodiment, the multilevel inverter is a Neutral Point Clamped (NPC) Flying Capacitor (FC) based hybrid multilevel inverter. In an embodiment, the multilevel inverter is a stacked multi-cell NPC multilevel inverter.Type: ApplicationFiled: November 17, 2016Publication date: July 6, 2017Inventors: Abhijit Kadam, Anshuman Shukla
-
Patent number: 9570912Abstract: The present invention relates to an AC/DC converter station for interconnection of a DC transmission line and an AC network, the AC/DC converter station including an AC/DC converter and a control system configured to control the AC/DC converter. The AC/DC converter station comprises a capacitor connected in series between the AC/DC converter and the AC network, and a voltage measurement device arranged to measure the voltage across the capacitor. The AC/DC converter further comprises a control system connected to the voltage measurement device and arranged to receive, from the voltage measurement device, a signal indicative of a measured voltage. The control system is arranged to perform the control of the AC/DC converter in dependence of the signal received from the voltage measurement device. The invention further relates to a method of operating an AC/DC converter station.Type: GrantFiled: March 4, 2010Date of Patent: February 14, 2017Assignee: ABB RESEARCH LTDInventors: Staffan Norrga, Tomas U Jonsson, Anshuman Shukla
-
Publication number: 20160233762Abstract: Embodiments herein provide a modular multilevel converter configured to increase one of number of an output voltage level and an output current level. The modular multilevel converter includes a plurality of legs where each leg includes a plurality of arms. Each arm of the modular multilevel voltage source converter includes a main wave shaping (WS) circuit, an auxiliary WS circuit and an arm inductor. The main WS circuit includes one or more half bridge sub-module(s) that includes a capacitor. The auxiliary WS circuit includes one or more full bridge sub-module(s) that includes a capacitor. Each arm of the modular multilevel current source converter comprises a plurality of half-bridge modules connected in parallel, and a plurality of arm capacitor connected across the plurality of half-bridge modules and one or more auxiliary full bridge module(s).Type: ApplicationFiled: February 4, 2016Publication date: August 11, 2016Inventors: Ebin Cherian Mathew, Anshuman Shukla, Mahendra Ghat, Mukeshkumar Mohanbhai Bhesaniya
-
Patent number: 8810985Abstract: A hybrid circuit breaker for interrupting a fault current in an electrical circuit line having a line impedance, the hybrid circuit breaker including a mechanical circuit breaker adapted to interrupt the line upon detecting the fault current, a semiconductor device arranged in parallel with the mechanical circuit breaker to conduct the fault current when the mechanical circuit breaker is disconnected, a branch connected between the electrical circuit line and ground, the branch including an impedance unit and a control unit configured, upon detecting the fault current, to connect the impedance unit in parallel with the line impedance.Type: GrantFiled: September 26, 2012Date of Patent: August 19, 2014Assignee: ABB Research Ltd.Inventors: Georgios Demetriades, Anshuman Shukla
-
Patent number: 8711591Abstract: The present invention relates to an AC/DC converter comprising at least two phase legs connected in series between first and second DC connection terminals of the AC/DC converter, wherein each phase leg comprises: an AC connection having first and second terminals arranged to connect the phase leg to a phase of an AC system; a phase branch comprising at least one converter cell and having first and second branch end terminals; and a capacitor. The capacitor is connected the between the first branch end terminal and the first AC connection terminal, so that the capacitor forms a DC blocking capacitor. The second AC terminal is connected to the second branch end terminal. The series connection of the phase legs between first and second DC connection terminal is such that a first series connection point in a phase leg is located between the first branch end terminal and the capacitor, while a second series connection point is located between the second branch end terminal and the second AC connection.Type: GrantFiled: May 11, 2010Date of Patent: April 29, 2014Assignee: ABB Research Ltd.Inventors: Tomas U Jonsson, Anshuman Shukla, Staffan Norrga, Kalpesh Hirjibhai Bhalodi, Praveen Kumar Barupati, Subhasish Mukherjee, Sasitharan Subramanian
-
Patent number: 8564981Abstract: A device for converting a DC voltage into an AC voltage includes a passive electronic filter having a first and second energy storage element, a third energy storage element placed between the first and second energy storage elements, a fourth energy storage element connected between a junction of the first energy storage element and the third energy storage element and an AC terminal and a fifth energy storage element connected between a junction of the second energy storage element and the third energy storage element and the AC terminal. The energy storage elements are of two different types, capacitive and inductive, with values selected to provide reduction of frequency components at two times the fundamental frequency of the AC voltage and at three times the fundamental frequency of the AC voltage.Type: GrantFiled: April 15, 2010Date of Patent: October 22, 2013Assignee: ABB Research Ltd.Inventors: Lennart Harnefors, Staffan Norrga, Anshuman Shukla
-
Patent number: 8503138Abstract: A hybrid circuit breaker, including a first circuit that includes: a main current path which includes a mechanical switch element, a commutation path arranged in parallel with the main current path and including a controllable semi-conductor switch element. The breaker also includes a first capacitor provided in the commutation path in series with the controllable semi-conductor switch element, and a second circuit, arranged in series with the first circuit and including a second capacitor and an inductance-generating element arranged in series with each other.Type: GrantFiled: April 13, 2012Date of Patent: August 6, 2013Assignee: ABB Research Ltd.Inventors: Georgios Demetriades, Anshuman Shukla
-
Publication number: 20130070495Abstract: The present invention relates to an AC/DC converter comprising at least two phase legs connected in series between first and second DC connection terminals of the AC/DC converter, wherein each phase leg comprises: an AC connection having first and second terminals arranged to connect the phase leg to a phase of an AC system; a phase branch comprising at least one converter cell and having first and second branch end terminals; and a capacitor. The capacitor is connected the between the first branch end terminal and the first AC connection terminal, so that the capacitor forms a DC blocking capacitor. The second AC terminal is connected to the second branch end terminal. The series connection of the phase legs between first and second DC connection terminal is such that a first series connection point in a phase leg is located between the first branch end terminal and the capacitor, while a second series connection point is located between the second branch end terminal and the second AC connection.Type: ApplicationFiled: May 11, 2010Publication date: March 21, 2013Applicant: ABB RESEARCH LTD.Inventors: Tomas U Jonsson, Anshuman Shukla, Staffan Norrga, Kalpesh Hirjibhai Bhalodi, Praveen Kumar Barupati, Sabhasish Mukherjee, Sasitharan Subramanian
-
Publication number: 20130027995Abstract: A device for converting a DC voltage into an AC voltage includes a passive electronic filter having a first and second energy storage element, a third energy storage element placed between the first and second energy storage elements, a fourth energy storage element connected between a junction of the first energy storage element and the third energy storage element and an AC terminal and a fifth energy storage element connected between a junction of the second energy storage element and the third energy storage element and the AC terminal. The energy storage elements are of two different types, capacitive and inductive, with values selected to provide reduction of frequency components at two times the fundamental frequency of the AC voltage and at three times the fundamental frequency of the AC voltage.Type: ApplicationFiled: April 15, 2010Publication date: January 31, 2013Applicant: ABB RESEARCH LTD.Inventors: Lennart Harnefors, Staffan Norrga, Anshuman Shukla
-
Publication number: 20130021708Abstract: A hybrid circuit breaker for interrupting a fault current in an electrical circuit line having a line impedance, the hybrid circuit breaker including a mechanical circuit breaker adapted to interrupt the line upon detecting the fault current, a semiconductor device arranged in parallel with the mechanical circuit breaker to conduct the fault current when the mechanical circuit breaker is disconnected, a branch connected between the electrical circuit line and ground, the branch including an impedance unit and a control unit configured, upon detecting the fault current, to connect the impedance unit in parallel with the line impedance.Type: ApplicationFiled: September 26, 2012Publication date: January 24, 2013Inventors: Georgios Demetriades, Anshuman Shukla
-
Publication number: 20130016541Abstract: The present invention relates to an AC/DC converter station for interconnection of a DC transmission line and an AC network, the AC/DC converter station including an AC/DC converter and a control system configured to control the AC/DC converter. The AC/DC converter station comprises a capacitor connected in series between the AC/DC converter and the AC network, and a voltage measurement device arranged to measure the voltage across the capacitor. The AC/DC converter further comprises a control system connected to the voltage measurement device and arranged to receive, from the voltage measurement device, a signal indicative of a measured voltage. The control system is arranged to perform the control of the AC/DC converter in dependence of the signal received from the voltage measurement device. The invention further relates to a method of operating an AC/DC converter station.Type: ApplicationFiled: March 4, 2010Publication date: January 17, 2013Applicant: ABB RESEARCH LTDInventors: Staffan Norrga, Tomas U Jonsson, Anshuman Shukla
-
Publication number: 20120218676Abstract: A hybrid circuit breaker, including a first circuit that includes: a main current path which includes a mechanical switch element, a commutation path arranged in parallel with the main current path and including a controllable semi-conductor switch element. The breaker also includes a first capacitor provided in the commutation path in series with the controllable semi-conductor switch element, and a second circuit, arranged in series with the first circuit and including a second capacitor and an inductance-generating element arranged in series with each other.Type: ApplicationFiled: April 13, 2012Publication date: August 30, 2012Inventors: Georgios Demetriades, Anshuman Shukla