Patents by Inventor Andre Schoene

Andre Schoene 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: 11411511
    Abstract: A switchable longitudinal voltage source has a first feed connection for feeding in a first current, a first output connection for outputting the first current, a second feed connection for feeding in a second current, and a second output connection for outputting the second current. An electrical energy store has a first connection and a second connection coupled to the output connections. The switchable longitudinal voltage source further has a center terminal of a first series circuit which directly forms the first output connection or terminal and a center terminal of a second series circuit which directly forms the second output connection or terminal.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: August 9, 2022
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: Mark-Matthias Bakran, Viktor Hofmann, Andre Schoen
  • Patent number: 11289996
    Abstract: A converter assembly has multi-phase multi-stage converters which are connected to parallel-connected transformers. The converter assembly contains series-connected partial converters, each having three parallel-connected bipolar phase modules, which are formed of two series-connected converter modules. The connection points of the converter modules form the phase connections for the transformers. The phase modules of a first partial converter consist only of unipolar sub-modules and those of a second partial converter consists only of bipolar sub-modules. A controller respectively reduces at least the partial DC voltage of the second partial converter, wherein the partial DC voltage thereof can be inverted at least until compensating the partial DC voltage of the first partial converter if the direct current exceeds a target value.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: March 29, 2022
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventor: Andre Schoen
  • Publication number: 20210399633
    Abstract: A switchable longitudinal voltage source has a first feed connection for feeding in a first current, a first output connection for outputting the first current, a second feed connection for feeding in a second current, and a second output connection for outputting the second current. An electrical energy store has a first connection and a second connection coupled to the output connections. The switchable longitudinal voltage source further has a center terminal of a first series circuit which directly forms the first output connection or terminal and a center terminal of a second series circuit which directly forms the second output connection or terminal.
    Type: Application
    Filed: September 25, 2018
    Publication date: December 23, 2021
    Inventors: MARK-MATTHIAS BAKRAN, VIKTOR HOFMANN, ANDRE SCHOEN
  • Publication number: 20210126555
    Abstract: A converter assembly has multi-phase multi-stage converters which are connected to parallel-connected transformers. The converter assembly contains series-connected partial converters, each having three parallel-connected bipolar phase modules, which are formed of two series-connected converter modules. The connection points of the converter modules form the phase connections for the transformers. The phase modules of a first partial converter consist only of unipolar sub-modules and those of a second partial converter consists only of bipolar sub-modules. A controller respectively reduces at least the partial DC voltage of the second partial converter, wherein the partial DC voltage thereof can be inverted at least until compensating the partial DC voltage of the first partial converter if the direct current exceeds a target value.
    Type: Application
    Filed: July 31, 2017
    Publication date: April 29, 2021
    Inventor: ANDRE SCHOEN
  • Publication number: 20200358348
    Abstract: A converter assembly includes a converter unit having AC voltage connection points feeding in or tapping an alternating current, and first and second DC voltage connection points feeding in or tapping a direct current. Parallel series circuits associated with an AC voltage connection point each have first and second circuit connection points respective connected to first and second DC voltage connection points. Each series circuit has submodules connected in series. For each series circuit the AC voltage connection point divides submodules into submodule groups electrically close to first and electrically close to second series circuit connection points. One DC voltage connection point is grounded. For each series circuit the AC voltage connection point divides the submodules into a submodule group electrically close to and a submodule group electrically remote from ground. Submodule groups close to ground have a bipolar submodule and submodule groups remote from ground have unipolar submodules.
    Type: Application
    Filed: September 1, 2017
    Publication date: November 12, 2020
    Inventors: ULRICH HALFMANN, ANDRE SCHOEN
  • Patent number: 10826379
    Abstract: A converter arrangement includes a converter which can be switched between an AC voltage supply system and a DC voltage circuit and which has converter valves that extend between AC voltage connections and DC voltage connections. Each converter valve has a series connection of bipolar submodules that include power semiconductor devices. The converter arrangement further includes a star point reactor which is located on the AC voltage side of the converter and which has impedance coils that are interconnected to form a grounded neutral point. A suppression filter is connected between the neutral point and a ground connection. The suppression filter is configured to suppress a harmonic of an alternating voltage in the AC voltage supply system.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: November 3, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christoph Armschat, Andre Schoen
  • Publication number: 20200186022
    Abstract: A converter arrangement includes a converter which can be switched between an AC voltage supply system and a DC voltage circuit and which has converter valves that extend between AC voltage connections and DC voltage connections. Each converter valve has a series connection of bipolar submodules that include power semiconductor devices. The converter arrangement further includes a star point reactor which is located on the AC voltage side of the converter and which has impedance coils that are interconnected to form a grounded neutral point. A suppression filter is connected between the neutral point and a ground connection. The suppression filter is configured to suppress a harmonic of an alternating voltage in the AC voltage supply system.
    Type: Application
    Filed: November 22, 2016
    Publication date: June 11, 2020
    Inventors: Christoph Armschat, Andre Schoen
  • Patent number: 10491139
    Abstract: A modular converter assembly has at least one AC voltage terminal and at least two DC voltage terminals. The DC voltage terminals are formed by the outer terminals of a series circuit and the AC voltage terminal is formed by the connecting node between two sub-circuits of the series circuit. Capacitors of submodules of the subcircuits are activated or deactivated based on their capacitor voltages. The capacitors are operated exclusively in a unipolar mode or exclusively in a bipolar mode. In a time period in which the temporal mean value of the current flowing through the sub-circuit has a different sign than the actual current flowing through the sub-circuit, capacitors operating in a unipolar mode are preferred over capacitors operating in a bipolar manner. That is, the unipolar capacitors are reactivated or remain activated. A selection loop is carried out repeatedly to select the capacitors for activation or deactivation.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: November 26, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mark-Matthias Bakran, Viktor Hofmann, Andre Schoen
  • Patent number: 10425015
    Abstract: A converter arrangement has a converter which can be switched between an AC network and a DC voltage circuit and which has power semiconductor valves that extend between AC voltage connections and DC voltage connections. Each power semiconductor valve has a series connection of bipolar submodules that in turn include power semiconductor devices. The arrangement further includes a star point reactor which is arranged on the AC voltage side of the converter and has impedance coils that are connected to a grounded neutral point. In order to better balance the voltages in the DC circuit, the impedance coils have a common coil core.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: September 24, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christoph Armschat, Andre Schoen, Dag Soerangr
  • Publication number: 20190245459
    Abstract: A modular converter assembly has at least one AC voltage terminal and at least two DC voltage terminals. The DC voltage terminals are formed by the outer terminals of a series circuit and the AC voltage terminal is formed by the connecting node between two sub-circuits of the series circuit. Capacitors of submodules of the subcircuits are activated or deactivated based on their capacitor voltages. The capacitors are operated exclusively in a unipolar mode or exclusively in a bipolar mode. In a time period in which the temporal mean value of the current flowing through the sub-circuit has a different sign than the actual current flowing through the sub-circuit, capacitors operating in a unipolar mode are preferred over capacitors operating in a bipolar manner. That is, the unipolar capacitors are reactivated or remain activated. A selection loop is carried out repeatedly to select the capacitors for activation or deactivation.
    Type: Application
    Filed: September 1, 2016
    Publication date: August 8, 2019
    Inventors: MARK-MATTHIAS BAKRAN, VIKTOR HOFMANN, ANDRE SCHOEN
  • Publication number: 20190165692
    Abstract: A converter arrangement has a converter which can be switched between an AC network and a DC voltage circuit and which has power semiconductor valves that extend between AC voltage connections and DC voltage connections. Each power semiconductor valve has a series connection of bipolar submodules that in turn include power semiconductor devices. The arrangement further includes a star point reactor which is arranged on the AC voltage side of the converter and has impedance coils that are connected to a grounded neutral point. In order to better balance the voltages in the DC circuit, the impedance coils have a common coil core.
    Type: Application
    Filed: May 4, 2016
    Publication date: May 30, 2019
    Inventors: CHRISTOPH ARMSCHAT, ANDRE SCHOEN, DAG SOERANGR
  • Patent number: 10141732
    Abstract: An apparatus for switching in a DC voltage mains has a switching device for interrupting the flow of current in at least one line of the DC voltage grid. The switching device is connected into the line of the DC voltage grid by way of a first and a second connection. An attenuation member absorbs energy from the applied terminal voltage. The attenuation member has a first and a second node that are electrically connected via an attenuation element, an electrical connection from the first node to the first connection via a first controlled or uncontrolled switching element, and an electrical connection from the first node to the second connection via a second controlled or uncontrolled switching element.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: November 27, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Enrique Gaxiola, Andre Schoen
  • Publication number: 20180076727
    Abstract: A converter arrangement has phase module branches each with two-pole submodules having an energy storage device and a power semiconductor switch. The first phase module branch extends between a first alternating voltage connection and a first direct voltage pole, the second phase module branch extends between the first alternating voltage connection and a second direct voltage pole, the third phase module branch extends between a second alternating voltage connection and the first direct voltage pole, the fourth phase module branch extends between the second alternating voltage connection and the second direct voltage pole. Each submodule can be bridged, independently of the current direction, by a bridging unit. A direct voltage switch is connected between one of the direct voltage poles and the associated direct voltage connection, and a freewheeling path extends between the two direct voltage connections and has a semiconductor element with a blocking and a bypass direction.
    Type: Application
    Filed: April 2, 2015
    Publication date: March 15, 2018
    Inventors: MARK-MATTHIAS BAKRAN, ANDRE SCHOEN, JIANG XU
  • Patent number: 9748848
    Abstract: A DC converter is suitable for continuous operation for connecting high-voltage DC networks having different voltages. The DC converter has a first partial converter and a second partial converter, which are connected in series with each other, forming a converter series circuit. The converter series circuit extends between the DC terminals of a DC connection. The second partial converter extends between the DC terminals of a second DC connection. The first partial converter and the second partial converter are connected to each other via a power exchange device, such that the exchange of electrical power between the first partial converter and the second partial converter is made possible via the power exchange device.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: August 29, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mark-Matthias Bakran, Hans-Joachim Knaak, Andre Schoen
  • Patent number: 9705406
    Abstract: A DC-DC converter for connecting high-voltage DC networks has series-connected sub-converters. The high-voltage DC networks which can be connected to the DC-DC converter can have different transmission symmetries by way of power exchanging devices and additional power exchanging devices. Thus, a symmetrical monopole can be connected to an asymmetrical bipolar network using the invention.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: July 11, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mark-Matthias Bakran, Dominik Ergin, Hans-Joachim Knaak, Andre Schoen
  • Publication number: 20160141963
    Abstract: A DC-DC converter for connecting high-voltage DC networks has series-connected sub-converters. The high-voltage DC networks which can be connected to the DC-DC converter can have different transmission symmetries by way of power exchanging devices and additional power exchanging devices. Thus, a symmetrical monopole can be connected to an asymmetrical bipolar network using the invention.
    Type: Application
    Filed: July 15, 2013
    Publication date: May 19, 2016
    Inventors: MARK-MATTHIAS BAKRAN, DOMINIK ERGIN, HANS-JOACHIM KNAAK, ANDRE SCHOEN
  • Publication number: 20150256081
    Abstract: A DC converter is suitable for continuous operation for connecting high-voltage DC networks having different voltages. The DC converter has a first partial converter and a second partial converter, which are connected in series with each other, forming a converter series circuit. The converter series circuit extends between the DC terminals of a DC connection. The second partial converter extends between the DC terminals of a second DC connection. The first partial converter and the second partial converter are connected to each other via a power exchange device, such that the exchange of electrical power between the first partial converter and the second partial converter is made possible via the power exchange device.
    Type: Application
    Filed: October 11, 2012
    Publication date: September 10, 2015
    Inventors: Mark-Matthias Bakran, Hans-Joachim Knaak, Andre Schoen
  • Publication number: 20150171617
    Abstract: An apparatus for switching in a DC voltage mains has a switching device for interrupting the flow of current in at least one line of the DC voltage grid. The switching device is connected into the line of the DC voltage grid by way of a first and a second connection. An attenuation member absorbs energy from the applied terminal voltage. The attenuation member has a first and a second node that are electrically connected via an attenuation element, an electrical connection from the first node to the first connection via a first controlled or uncontrolled switching element, and an electrical connection from the first node to the second connection via a second controlled or uncontrolled switching element.
    Type: Application
    Filed: May 15, 2013
    Publication date: June 18, 2015
    Inventors: Enrique Gaxiola, Andre Schoen
  • Patent number: 8718900
    Abstract: A method to operate an internal combustion engine, comprising the steps of direct or indirect measurement in a cylinder and/or in a working cycle of the time or point or area/band where the combustion process of an internal combustion engine completes the ignition phase or nears the end of the ignition phase and begins or transits into the combustion phase, or which marks the beginning of the combustion phase, or otherwise marks that the combustion process has commenced.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: May 6, 2014
    Inventor: André Schoen
  • Patent number: D765856
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: September 6, 2016
    Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
    Inventors: Andre Schoene, Jens Fischer