Patents by Inventor Owen Jannis Schelenz
Owen Jannis Schelenz 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: 20220053673Abstract: Heat dissipation system, a power converter using such a heat dissipation system, and an associated method of thermal management of the power converter are disclosed. The heat dissipation system includes a condenser, a first cooling loop, and a second cooling loop. The first cooling loop is coupled to the condenser and includes a first two-phase heat transfer device. The second cooling loop is coupled to the condenser and includes a second two-phase heat transfer device. The condenser is disposed above the first and second two-phase heat transfer devices.Type: ApplicationFiled: October 27, 2021Publication date: February 17, 2022Inventors: Alistair Martin Waddell, Mark Aaron Chan Chan, Owen Jannis Schelenz, Michael Fernahl
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Patent number: 11252847Abstract: Heat dissipation system, a power converter using such a heat dissipation system, and an associated method of thermal management of the power converter are disclosed. The heat dissipation system includes a condenser, a first cooling loop, and a second cooling loop. The first cooling loop is coupled to the condenser and includes a first two-phase heat transfer device. The second cooling loop is coupled to the condenser and includes a second two-phase heat transfer device. The condenser is disposed above the first and second two-phase heat transfer devices.Type: GrantFiled: June 30, 2017Date of Patent: February 15, 2022Assignee: General Electric CompanyInventors: Alistair Martin Waddell, Mark Aaron Chan Chan, Owen Jannis Schelenz, Michael Fernahl
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Patent number: 11159011Abstract: The invention relates to a power system with an electric circuit connected between a power grid and a power source. The electric circuit includes a main power converter having main input terminals connected to the power source 16 by a DC link and output terminals. The main power converter is controlled by a controller. The electric circuit includes a main transformer having a primary winding 8a and a secondary winding, the primary winding being connected to the output terminals of the main power converter. Main switchgear is connected between the secondary winding of the main transformer and the power grid. An auxiliary transformer has a primary winding connected to the power grid in parallel with the main switchgear and a secondary winding connected to the controller. A pre-charge circuit is connected between the auxiliary transformer and the DC link.Type: GrantFiled: March 2, 2018Date of Patent: October 26, 2021Assignee: GE ENERGY POWER CONVERSION TECHNOLOGY LTD.Inventors: Owen Jannis Schelenz, Markus Berndt, Dominik Hofmeyer
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Publication number: 20190008078Abstract: Heat dissipation system, a power converter using such a heat dissipation system, and an associated method of thermal management of the power converter are disclosed. The heat dissipation system includes a condenser, a first cooling loop, and a second cooling loop. The first cooling loop is coupled to the condenser and includes a first two-phase heat transfer device. The second cooling loop is coupled to the condenser and includes a second two-phase heat transfer device. The condenser is disposed above the first and second two-phase heat transfer devices.Type: ApplicationFiled: June 30, 2017Publication date: January 3, 2019Inventors: Alistair Martin Waddell, Mark Aaron Chan Chan, Owen Jannis Schelenz, Michael Fernahl
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Publication number: 20180254628Abstract: The invention relates to a power system with an electric circuit connected between a power grid and a power source. The electric circuit includes a main power converter having main input terminals connected to the power source 16 by a DC link and output terminals. The main power converter is controlled by a controller. The electric circuit includes a main transformer having a primary winding 8a and a secondary winding, the primary winding being connected to the output terminals of the main power converter. Main switchgear is connected between the secondary winding of the main transformer and the power grid. An auxiliary transformer has a primary winding connected to the power grid in parallel with the main switchgear and a secondary winding connected to the controller. A pre-charge circuit is connected between the auxiliary transformer and the DC link.Type: ApplicationFiled: March 2, 2018Publication date: September 6, 2018Inventors: Owen Jannis SCHELENZ, Markus BERNDT, Dominik HOFMEYER
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Patent number: 9076607Abstract: A system that includes micro-electromechanical system switching circuitry is provided. The system may include a first over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a voltage level across contacts of the micro-electromechanical system switching circuitry during a first switching event, such as a turn-on event. The system may further include a second over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a current flow through the contacts of the micro-electromechanical system switching circuitry during a second switching event, such as a turn-off event.Type: GrantFiled: October 3, 2007Date of Patent: July 7, 2015Assignee: General Electric CompanyInventors: William James Premerlani, Kanakasabapathi Subramanian, Kathleen Ann O'Brien, John Norton Park, Owen Jannis Schelenz, Maja Harfman Todorovic
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Patent number: 8793028Abstract: A power inverter system includes a plurality of power inverters such as solar inverters receiving power from at least one energy source. Each power inverter includes algorithmic maximum peak power tracking (MPPT) software or integrated MPPT firmware to calculate its own potential real power. A controller is in electrical communication with selected power inverters that are operating in curtailed modes of operation and commands each selected power inverter to shift its power production duties and to perform MPPT sweeps. Each selected power inverter then calculates its own potential real power capability in response to corresponding MPPT sweep data.Type: GrantFiled: November 21, 2011Date of Patent: July 29, 2014Assignee: General Electric CompanyInventors: Palak Jain, Owen Jannis Schelenz, Kathleen Ann O'Brien
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Patent number: 8787052Abstract: A power conversion system configured to provide alternating current (AC) power to a transformer is described. The power conversion system includes a power conversion device that includes a device input and a device output. The power conversion device is configured to receive power from a power source at the device input and the device output is configured for coupling to a transformer input. The power conversion system also includes a sensor coupled at a first point of interconnection between the device output and the transformer input and is configured to measure a voltage level at the first point of interconnection. The power conversion system also includes a system controller communicatively coupled to the power conversion device and the sensor. The system controller is configured to determine an impedance of the power grid based at least partially on the voltage level at the first point of interconnection.Type: GrantFiled: December 13, 2011Date of Patent: July 22, 2014Assignee: General Electric CompanyInventors: Kathleen Ann O'Brien, Owen Jannis Schelenz
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Patent number: 8687325Abstract: An electrical switching device is presented. The electrical switching device includes multiple switch sets coupled in series. Each of the switch sets includes multiple switches coupled in parallel. A control circuit is coupled to the multiple switch sets and configured to control opening and closing of the switches. One or more intermediate diodes are coupled between the control circuit and each point between a respective pair of switch sets.Type: GrantFiled: September 11, 2008Date of Patent: April 1, 2014Assignee: General Electric CompanyInventors: William James Premerlani, Kathleen Ann O'Brien, Owen Jannis Schelenz
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Patent number: 8664800Abstract: Power inverters are controlled in response to reactive power support commands received from a power grid such that at least one power inverter provides reactive power to the power grid. The reactive power provided is based on each power inverter's reactive power capacity only while the total power capacity of each power inverter providing the reactive power is not exhausted in generating real power.Type: GrantFiled: August 31, 2010Date of Patent: March 4, 2014Assignee: General Electric CompanyInventors: Anthony William Galbraith, Owen Jannis Schelenz, Mark Edward Cardinal, Andreas Kirchner, Nicholas Wright Miller, Kara Clark
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Publication number: 20130274946Abstract: A power plant for providing alternating current (AC) power to an electrical grid is described. The power plant includes a first power converter couplable to the electrical grid at a first point of interconnection for receiving power from a first power source. The power plant also includes a second power converter couplable to the electrical grid at the first point of interconnection for receiving power from a second power source. The power plant also includes at least one sensor for measuring a voltage level at the first point of interconnection and a central controller for coordinating operation of the first power converter and the second power converter to determine an impedance of the electrical grid.Type: ApplicationFiled: April 13, 2012Publication date: October 17, 2013Inventors: Owen Jannis Schelenz, Kathleen Ann O'Brien, David Smith, Xinhui Wu
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Publication number: 20130148394Abstract: A power conversion system configured to provide alternating current (AC) power to a transformer is described. The power conversion system includes a power conversion device that includes a device input and a device output. The power conversion device is configured to receive power from a power source at the device input and the device output is configured for coupling to a transformer input. The power conversion system also includes a sensor coupled at a first point of interconnection between the device output and the transformer input and is configured to measure a voltage level at the first point of interconnection. The power conversion system also includes a system controller communicatively coupled to the power conversion device and the sensor. The system controller is configured to determine an impedance of the power grid based at least partially on the voltage level at the first point of interconnection.Type: ApplicationFiled: December 13, 2011Publication date: June 13, 2013Inventors: Kathleen Ann O'Brien, Owen Jannis Schelenz
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Publication number: 20130131884Abstract: A power inverter system includes a plurality of power inverters such as solar inverters receiving power from at least one energy source. Each power inverter includes algorithmic maximum peak power tracking (MPPT) software or integrated MPPT firmware to calculate its own potential real power. A controller is in electrical communication with selected power inverters that are operating in curtailed modes of operation and commands each selected power inverter to shift its power production duties and to perform MPPT sweeps. Each selected power inverter then calculates its own potential real power capability in response to corresponding MPPT sweep data.Type: ApplicationFiled: November 21, 2011Publication date: May 23, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Palak Jain, Owen Jannis Schelenz, Kathleen Ann O'Brien
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Publication number: 20120049635Abstract: A power generation system includes photovoltaic (PV) modules for generating power and power converters coupled to receive power from the PV modules. The power generation system further includes converter controllers to control the power converters, each converter controller includes a maximum power point tracking control element. A master controller in the power generation system is configured to coordinate power outputs of the power converters by controlling the timing and numbers of power converters having power-voltage (P-V) curves sweeping between maximum power points and power points off the maximum power points.Type: ApplicationFiled: August 27, 2010Publication date: March 1, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Owen Jannis Schelenz, Kathleen Ann O'Brien, Juan Antonio Sabate
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Publication number: 20120049636Abstract: Power inverters are controlled in response to reactive power support commands received from a power grid such that at least one power inverter provides reactive power to the power grid. The reactive power provided is based on each power inverter's reactive power capacity only while the total power capacity of each power inverter providing the reactive power is not exhausted in generating real power.Type: ApplicationFiled: August 31, 2010Publication date: March 1, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Anthony William Galbraith, Owen Jannis Schelenz, Mark Edward Cardinal, Andreas Kirchner, Nicholas Wright Miller, Kara Clark
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Patent number: 7808764Abstract: A system that includes micro-electromechanical system switching circuitry, such as may be made up of a plurality of micro-electromechanical switches, is provided. The plurality of micro-electromechanical switches may generally operate in a closed switching condition during system operation. A controller is coupled to the electromechanical switching circuitry. The controller may be configured to actuate at least one of the micro-electromechanical switches to a temporary open switching condition while a remainder of micro-electromechanical switches remains in the closed switching condition to conduct a load current and avoid interrupting system operation. The temporary open switching condition of the switch is useful to avoid a tendency of switch contacts to stick to one another.Type: GrantFiled: October 31, 2007Date of Patent: October 5, 2010Assignee: General Electric CompanyInventors: Kathleen Ann O'Brien, Kanakasabapathi Subramanian, Nicole Christine Reeves Hedges, Michael Solomon Idelchik, Owen Jannis Schelenz
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Publication number: 20100061024Abstract: An electrical switching device is presented. The electrical switching device includes multiple switch sets coupled in series. Each of the switch sets includes multiple switches coupled in parallel. A control circuit is coupled to the multiple switch sets and configured to control opening and closing of the switches. One or more intermediate diodes are coupled between the control circuit and each point between a respective pair of switch sets.Type: ApplicationFiled: September 11, 2008Publication date: March 11, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: William James Premerlani, Kathleen Ann O'Brien, Owen Jannis Schelenz
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Publication number: 20090107813Abstract: A system that includes micro-electromechanical system switching circuitry, such as may be made up of a plurality of micro-electromechanical switches, is provided. The plurality of micro-electromechanical switches may generally operate in a closed switching condition during system operation. A controller is coupled to the electromechanical switching circuitry. The controller may be configured to actuate at least one of the micro-electromechanical switches to a temporary open switching condition while a remainder of micro-electromechanical switches remains in the closed switching condition to conduct a load current and avoid interrupting system operation. The temporary open switching condition of the switch is useful to avoid a tendency of switch contacts to stick to one another.Type: ApplicationFiled: October 31, 2007Publication date: April 30, 2009Inventors: Kathleen Ann O'Brien, Kanakasabapathi Subramanian, Nicole Christine Reeves Hedges, Michael Solomon Idelchik, Owen Jannis Schelenz
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Publication number: 20080164961Abstract: A system that includes micro-electromechanical system switching circuitry is provided. The system may include a first over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a voltage level across contacts of the micro-electromechanical system switching circuitry during a first switching event, such as a turn-on event. The system may further include a second over-current protection circuitry connected in a parallel circuit with the micro-electromechanical system switching circuitry for suppressing a current flow through the contacts of the micro-electromechanical system switching circuitry during a second switching event, such as a turn-off event.Type: ApplicationFiled: October 3, 2007Publication date: July 10, 2008Inventors: William James Premerlani, Kanakasabapathi Subramanian, Kathleen Ann O'Brien, John Norton Park, Owen Jannis Schelenz, Maja Harfman Todorovic