Patents by Inventor Maja Harfman Todorovic

Maja Harfman Todorovic 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: 10763655
    Abstract: An electrical system includes a power electronics system and a bus bar coupled to the power electronic system. The power electronics system includes a switching device configured to selectively connect and disconnect. The bus bar includes a first conductive layer and a second conductive layer. The first conductive layer is disposed directly adjacent a first insulation layer, wherein the first conductive layer is configured to conduct a first polarity of electrical power to, from, or both the power electronics system. The second conductive layer is disposed directly adjacent the first insulation layer, and is configured to conduct a second polarity of electrical power opposite the first polarity to, from, or both the power electronics system. The first conductive layer comprises a first thickness half a second thickness of the second conductive layer.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: September 1, 2020
    Assignee: General Electric Company
    Inventors: Xu She, Rajib Datta, Ravisekhar Nadimpalli Raju, Maja Harfman-Todorovic, Philip Michael Cioffi
  • Publication number: 20200235557
    Abstract: An electrical system includes a power electronics system and a bus bar coupled to the power electronic system. The power electronics system includes a switching device configured to selectively connect and disconnect. The bus bar includes a first conductive layer and a second conductive layer. The first conductive layer is disposed directly adjacent a first insulation layer, wherein the first conductive layer is configured to conduct a first polarity of electrical power to, from, or both the power electronics system. The second conductive layer is disposed directly adjacent the first insulation layer, and is configured to conduct a second polarity of electrical power opposite the first polarity to, from, or both the power electronics system. The first conductive layer comprises a first thickness half a second thickness of the second conductive layer.
    Type: Application
    Filed: April 8, 2020
    Publication date: July 23, 2020
    Inventors: Xu She, Rajib Datta, Ravisekhar Nadimpalli Raju, Maja Harfman- Todorovic, Philip Michael Cioffi
  • Publication number: 20200212909
    Abstract: Aspects of the present disclosure are directed toward designs and methods of improving driving of switching devices. One proposed solution to improving driving of switching devices is an auxiliary control circuit that selectively guides the switching device through at least one switching region, permitting an improved operation of the switching device.
    Type: Application
    Filed: January 2, 2019
    Publication date: July 2, 2020
    Inventors: Ramanujam Ramabhadran, Krishna Mainali, Kum-Kang Huh, Maja Harfman-Todorovic, Robert James Thomas, Cong Li
  • Publication number: 20190343020
    Abstract: A heat sink for cooling an electronic component includes a substrate comprising an electrically non-conductive material and an inlet port and an outlet port extending outward from the substrate. The inlet and outlet ports are fluidically coupled to a fluid flow surface of the heat sink by passages that extend through a portion of the substrate. The heat sink also includes a shield comprising an electrically conductive material. The shield is disposed atop or within the substrate and is configured to suppress electromagnetic interference generated by an electronic component coupled to the heat sink.
    Type: Application
    Filed: May 1, 2018
    Publication date: November 7, 2019
    Inventors: Maja Harfman Todorovic, Philip Michael Cioffi, Xu She, Gary Dwayne Mandrusiak, Rajib Datta, Michael Joseph Schutten
  • Publication number: 20190343019
    Abstract: A device for cooling an electronic component includes a substrate having a component mounting surface and a fluid flow surface recessed relative to the component mounting surface. The device also includes an inlet orifice positioned proximate a first end of the fluid flow surface and an outlet orifice positioned proximate a second end of the fluid flow surface. A pattern of surface features is arranged on the fluid flow surface. The pattern of surface features is configured to entrain a coolant flowing across the fluid flow surface and redirect the coolant upward and away from the fluid flow surface.
    Type: Application
    Filed: May 1, 2018
    Publication date: November 7, 2019
    Inventors: Maja Harfman Todorovic, Philip Michael Cioffi, Xu She, Gary Dwayne Mandrusiak, Rajib Datta, Michael Joseph Schutten
  • Patent number: 10431978
    Abstract: A system and method for conditioning DC power received from hybrid DC power sources is disclosed. A power conversion circuit is coupled to a respective DC power source to selectively condition the output power generated thereby to a DC bus voltage. The power conversion circuit includes a switch arrangement and capacitors arranged to provide a charge balancing in the power conversion circuit. A controller in operable communication with the switch arrangement receives inputs on a DC bus voltage and at least one parameter related to operation of the DC power source, and determines an adjustable voltage to be output from the conversion circuit to the DC bus based on the received inputs. The controller then selectively controls operation of the switch arrangement in order to generate the determined adjustable voltage.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 1, 2019
    Assignee: General Electric Company
    Inventors: Fengfeng Tao, Ahmed Elasser, Song Chi, Maja Harfman Todorovic
  • Patent number: 10404186
    Abstract: A power module includes an input bus, a switching device, and an output bus. The input bus includes a first coating of a high permeability magnetic conductive material and is configured to receive input direct current (DC) electrical power from an electrical power source. The switching device is electrically coupled to the first input bus, and is configured to selectively connect and disconnect to facilitate converting the input DC electrical power into output alternating current (AC) electrical power. The output bus includes a second coating of the high permeability magnetic conductive material, and is electrically coupled to the first switching device. The output bus is configured to supply the output AC electrical power to an electrical load.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: September 3, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Michael Joseph Schutten, Fengfeng Tao, Maja Harfman-Todorovic, Ravisekhar Nadimpalli Raju, Philip Michael Cioffi, Ljubisa Dragoljub Stevanovic
  • Patent number: 10374591
    Abstract: Systems and methods provided herein relate to a gate drive circuit for controlling operation of a wide bandgap semiconductor switch. The systems and methods receive a control signal and configuring an operation signal configured to activate a wide bandgap switch (WBG switch). A profile of the operation signal being based on electrical characteristics of first and second shaping circuits. The systems and methods further deliver the operation signal to the WBG switch.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: August 6, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Ramanujam Ramabhadran, Sayan Acharya, Han Peng, Maja Harfman Todorovic, Ahmed Elasser, Robert Thomas
  • Publication number: 20190006831
    Abstract: An electrical system includes a power electronics system and a bus bar coupled to the power electronic system. The power electronics system includes a switching device configured to selectively connect and disconnect. The bus bar includes a first conductive layer and a second conductive layer. The first conductive layer is disposed directly adjacent a first insulation layer, wherein the first conductive layer is configured to conduct a first polarity of electrical power to, from, or both the power electronics system. The second conductive layer is disposed directly adjacent the first insulation layer, and is configured to conduct a second polarity of electrical power opposite the first polarity to, from, or both the power electronics system. The first conductive layer comprises a first thickness half a second thickness of the second conductive layer.
    Type: Application
    Filed: September 6, 2018
    Publication date: January 3, 2019
    Inventors: Xu She, Rajib Datta, Ravisekhar Nadimpalli Raju, Maja Harfman- Todorovic, Philip Michael Cioffi
  • Patent number: 10103534
    Abstract: An electrical system includes a power electronics system and a bus bar coupled to the power electronic system. The power electronics system includes a switching device configured to selectively connect and disconnect. The bus bar includes a first conductive layer and a second conductive layer. The first conductive layer is disposed directly adjacent a first insulation layer, wherein the first conductive layer is configured to conduct a first polarity of electrical power to, from, or both the power electronics system. The second conductive layer is disposed directly adjacent the first insulation layer, and is configured to conduct a second polarity of electrical power opposite the first polarity to, from, or both the power electronics system. The first conductive layer comprises a first thickness half a second thickness of the second conductive layer.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: October 16, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Xu She, Rajib Datta, Ravisekhar Nadimpalli Raju, Maja Harfman-Todorovic, Philip Michael Cioffi
  • Publication number: 20180191338
    Abstract: Systems and methods provided herein relate to a gate drive circuit for controlling operation of a wide bandgap semiconductor switch. The systems and methods receive a control signal and configuring an operation signal configured to activate a wide bandgap switch (WBG switch). A profile of the operation signal being based on electrical characteristics of first and second shaping circuits. The systems and methods further deliver the operation signal to the WBG switch.
    Type: Application
    Filed: January 3, 2017
    Publication date: July 5, 2018
    Inventors: Ramamujam Ramabhadran, Sayan Acharya, Han Peng, Maja Harfman Todorovic, Ahmed Elasser, Robert Thomas
  • Patent number: 9974201
    Abstract: A feedthrough includes a flange comprising an inner cylindrical surface and a planar mounting surface. The inner cylindrical surface defines a cylindrical passage within the flange. The feedthrough further includes a printed circuit board (“PCB”) mounted on the planar mounting surface of the flange, and an electrically conductive element that extends through the cylindrical passage of the flange.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: May 15, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Michael Joseph Schutten, Robert James Thomas, Maja Harfman Todorovic
  • Publication number: 20180124938
    Abstract: A feedthrough includes a flange comprising an inner cylindrical surface and a planar mounting surface. The inner cylindrical surface defines a cylindrical passage within the flange. The feedthrough further includes a printed circuit board (“PCB”) mounted on the planar mounting surface of the flange, and an electrically conductive element that extends through the cylindrical passage of the flange.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 3, 2018
    Inventors: Michael Joseph Schutten, Robert James Thomas, Maja Harfman Todorovic
  • Publication number: 20180123334
    Abstract: An electrical system includes a power electronics system and a bus bar coupled to the power electronic system. The power electronics system includes a switching device configured to selectively connect and disconnect. The bus bar includes a first conductive layer and a second conductive layer. The first conductive layer is disposed directly adjacent a first insulation layer, wherein the first conductive layer is configured to conduct a first polarity of electrical power to, from, or both the power electronics system. The second conductive layer is disposed directly adjacent the first insulation layer, and is configured to conduct a second polarity of electrical power opposite the first polarity to, from, or both the power electronics system. The first conductive layer comprises a first thickness half a second thickness of the second conductive layer.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 3, 2018
    Inventors: Xu She, Rajib Datta, Ravisekhar Nadimpalli Raju, Maja Harfman-Todorovic, Philip Michael Cioffi
  • Publication number: 20180123476
    Abstract: A power module includes an input bus, a switching device, and an output bus. The input bus includes a first coating of a high permeability magnetic conductive material and is configured to receive input direct current (DC) electrical power from an electrical power source. The switching device is electrically coupled to the first input bus, and is configured to selectively connect and disconnect to facilitate converting the input DC electrical power into output alternating current (AC) electrical power. The output bus includes a second coating of the high permeability magnetic conductive material, and is electrically coupled to the first switching device. The output bus is configured to supply the output AC electrical power to an electrical load.
    Type: Application
    Filed: October 27, 2016
    Publication date: May 3, 2018
    Inventors: Michael Joseph Schutten, Fengfeng Tao, Maja Harfman-Todorovic, Ravisekhar Nadimpalli Raju, Philip Michael Cioffi, Ljubisa Dragoljub Stevanovic
  • Patent number: 9893678
    Abstract: An alternating current (AC) harness for a photovoltaic (PV) system includes a wire assembly having a first end and a second end, the wire assembly having a plurality of lead wires, and at least one AC connection module positioned at a location along a length of the wire assembly between the first end and the second end. Further, the at least one AC connection module includes a first connection terminal electrically coupled to the plurality of lead wires of the wire assembly and constructed to electrically couple the wire assembly with an output of a first PV module of the PV system. The at least one AC connection module also includes a second connection terminal electrically coupled to the plurality of lead wires of the wire assembly and constructed to electrically couple the wire assembly with an output of a second PV module of the PV system.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: February 13, 2018
    Assignee: General Electric Company
    Inventors: Philip Michael Cioffi, Maja Harfman Todorovic, Michael Scott Herzog, Charles Steven Korman, Donald M. Doherty, Neil Anthony Johnson
  • Publication number: 20170366006
    Abstract: A system and method for conditioning DC power received from hybrid DC power sources is disclosed. A power conversion circuit is coupled to a respective DC power source to selectively condition the output power generated thereby to a DC bus voltage. The power conversion circuit includes a switch arrangement and capacitors arranged to provide a charge balancing in the power conversion circuit. A controller in operable communication with the switch arrangement receives inputs on a DC bus voltage and at least one parameter related to operation of the DC power source, and determines an adjustable voltage to be output from the conversion circuit to the DC bus based on the received inputs. The controller then selectively controls operation of the switch arrangement in order to generate the determined adjustable voltage.
    Type: Application
    Filed: August 10, 2017
    Publication date: December 21, 2017
    Inventors: Fengfeng Tao, Ahmed Elasser, Song Chi, Maja Harfman Todorovic
  • Publication number: 20170264239
    Abstract: A micro-inverter assembly for use in a photovoltaic system includes a housing, a direct current (DC)-to-alternating current (AC) micro-inverter disposed within the housing, and a DC connector electrically coupled to the DC-to-AC micro-inverter. The DC connector is positioned within a recess formed in a bottom surface of the housing such that at least one electrical contact of the DC connector is accessible from outside the housing. According to alternative embodiments, the DC connector comprises a plug-and-play connector constructed for one of a rotational engagement and a translational engagement with a DC connector of a photovoltaic (PV) panel.
    Type: Application
    Filed: May 24, 2017
    Publication date: September 14, 2017
    Inventors: Philip Michael Cioffi, Maja Harfman Todorovic, Michael Scott Herzog, Charles Steven Korman, Donald M. Doherty, Neil Anthony Johnson
  • Patent number: 9748767
    Abstract: A system and method for conditioning DC power received from hybrid DC power sources is disclosed. A power conversion circuit is coupled to a respective DC power source to selectively condition the output power generated thereby to a DC bus voltage. The power conversion circuit includes a switch arrangement and capacitors arranged to provide a charge balancing in the power conversion circuit. A controller in operable communication with the switch arrangement receives inputs on a DC bus voltage and at least one parameter related to operation of the DC power source, and determines an adjustable voltage to be output from the conversion circuit to the DC bus based on the received inputs. The controller then selectively controls operation of the switch arrangement in order to generate the determined adjustable voltage.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: August 29, 2017
    Assignee: General Electric Company
    Inventors: Fengfeng Tao, Ahmed Elasser, Song Chi, Maja Harfman Todorovic
  • Patent number: 9722595
    Abstract: A system includes a SiC semiconductor power device; a power supply board that is configured to provide power to a first gate driver board via a connector; the first gate driver board that is coupled and configured to provide current to the SiC semiconductor power device, wherein the first gate driver board is coupled to the power supply board via the connector, and wherein the first gate driver board is separated from the power supply board; and an interconnect board that is coupled to the first gate driver board, wherein the interconnect board is configured to couple the first gate driver board a second gate driver board.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: August 1, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Fengfeng Tao, Michael Joseph Schutten, Jeffrey Joseph Nasadoski, Maja Harfman-Todorovic, John Stanley Glaser