Patents by Inventor Volker Karrer
Volker Karrer 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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Patent number: 9269508Abstract: The invention relates to a tap changer for voltage regulation with semiconductor switching components on a regulating transformer having a regulating winding. The tap changer is of a modular design and each module comprises, respectively, one partial winding of the regulating winding that is connectable or disconnectable by means of semiconductor switching components. Varistors and capacitors are additionally integrated for protecting the semiconductor switching components against high voltages.Type: GrantFiled: January 15, 2013Date of Patent: February 23, 2016Assignee: MASCHINENFABRIK REINHAUSEN GMBHInventors: Alexander Reich, Volker Karrer
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Patent number: 9218902Abstract: The invention relates to a power transformer with electronic components. The aim of the invention is to arrange the energy supply of the electronic components of a power transformer closer to the components and thus eliminate the disadvantages of the prior art. According to the invention, a stray field collector is brought into a stray field of the power transformer, whereby a voltage is generated.Type: GrantFiled: February 18, 2013Date of Patent: December 22, 2015Assignee: MASCHINENFABRIK REINHAUSEN GMBHInventors: Volker Karrer, Karsten Viereck, Alexander Reich
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Patent number: 9123464Abstract: The invention relates to a transformer with a tap changer, wherein optionally the primary or secondary side can be regulated by the tap changer, and wherein, on the side of the transformer to be regulated, a main winding and at least one regulating winding, which is connectable by the tap changer, are provided. According to the invention, the main winding is divided into two main winding parts, and the at least one regulating winding and the tap changer (3) connecting the regulating winding are arranged electrically between the two main winding parts (1, 2).Type: GrantFiled: January 15, 2013Date of Patent: September 1, 2015Assignee: MASCHINENFABRIK REINHAUSEN GMBHInventors: Jochen Von Bloh, Volker Karrer, Dieter Dohnal, Karsten Viereck
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Publication number: 20150014130Abstract: The invention relates to a tap changer for voltage regulation with semiconductor switching components on a regulating transformer having a regulating winding. The tap changer is of a modular design and each module comprises, respectively, one partial winding of the regulating winding that is connectable or disconnectable by means of semiconductor switching components. Varistors and capacitors are additionally integrated for protecting the semiconductor switching components against high voltages.Type: ApplicationFiled: January 15, 2013Publication date: January 15, 2015Inventors: Alexander Reich, Volker Karrer
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Publication number: 20150009001Abstract: The invention relates to a power transformer with electronic components. The aim of the invention is to arrange the energy supply of the electronic components of a power transformer closer to the components and thus eliminate the disadvantages of the prior art. According to the invention, a stray field collector is brought into a stray field of the power transformer, whereby a voltage is generated.Type: ApplicationFiled: February 18, 2013Publication date: January 8, 2015Inventors: Volker Karrer, Karsten Viereck, Alexander Reich
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Publication number: 20140375407Abstract: The invention relates to a transformer with a tap changer, wherein optionally the primary or secondary side can be regulated by the tap changer, and wherein, on the side of the transformer to be regulated, a main winding and at least one regulating winding, which is connectable by the tap changer, are provided. According to the invention, the main winding is divided into two main winding parts, and the at least one regulating winding and the tap changer (3) connecting the regulating winding are arranged electrically between the two main winding parts (1, 2).Type: ApplicationFiled: January 15, 2013Publication date: December 25, 2014Inventors: Jochen Von Bloh, Volker Karrer, Dieter Dohnal, Karsten Viereck
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Patent number: 8884638Abstract: A circuit configuration monitors the electrical insulation of an electrically conductive part in relation to a first pole and a second pole of an electrical power network for example, an electrical drive network in a hybrid vehicle. The circuit configuration is characterized in that between the electrically conductive part and the two poles, a voltage divider having at least two resistors is arranged in each case. A measuring unit is associated with each of the two voltage dividers and provided for measuring a partial voltage, which drops via at least one of the resistors. A switch unit is associated each with the two voltage dividers and is provided for alternately bypassing at least one of the resistors.Type: GrantFiled: September 24, 2008Date of Patent: November 11, 2014Assignee: Continental Automotive GmbHInventors: Volker Karrer, Christian Kuschnarew
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Publication number: 20100308841Abstract: A circuit configuration monitors the electrical insulation of an electrically conductive part in relation to a first pole and a second pole of an electrical power network for example, an electrical drive network in a hybrid vehicle. The circuit configuration is characterized in that between the electrically conductive part and the two poles, a voltage divider having at least two resistors is arranged in each case. A measuring unit is associated with each of the two voltage dividers and provided for measuring a partial voltage, which drops via at least one of the resistors. A switch unit is associated each with the two voltage dividers and is provided for alternately bypassing at least one of the resistors.Type: ApplicationFiled: September 24, 2008Publication date: December 9, 2010Applicant: CONTINENTAL AUTOMOTIVE GMBHInventors: Volker Karrer, Christian Kuschnarew
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Patent number: 7542291Abstract: In order to improve the heat dissipation capacity in an electronic circuit configuration with one or more printed circuit boards thermally coupled by one flat side to a heat sink having at least one coolant duct, the flat side immediately adjoins the coolant duct.Type: GrantFiled: June 22, 2007Date of Patent: June 2, 2009Assignee: Siemens VDO Automotive AktiengesellschaftInventors: Volker Karrer, Bernhard Lichtinger, Johannes Mehler, Folker Renken, Florian Schupp, Arnoud Smit
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Patent number: 7369383Abstract: A protective circuit (1), particularly for overvoltage-protecting an electronic motor control unit, comprises a signal connection receiving and/or emitting an electrical signal, a switching element (4) which activates or deactivates a protective interrupter and is controllable via a control input, and a control circuit (5), the input side of which is connected to the signal connection while the output side thereof is connected to the control input of the switching element (4) in order to activate or deactivate the protective interrupter according to the electrical state at the signal connection. The control circuit (5) has a hysteresis characteristic regarding the electrical state at the signal connection.Type: GrantFiled: November 12, 2004Date of Patent: May 6, 2008Assignee: Siemens AktiengesellschaftInventors: Franz Allmeier, Volker Karrer, Thomas Reindl
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Publication number: 20070297145Abstract: In order to improve the heat dissipation capacity in an electronic circuit configuration with one or more printed circuit boards thermally coupled by one flat side to a heat sink having at least one coolant duct, the flat side immediately adjoins the coolant duct.Type: ApplicationFiled: June 22, 2007Publication date: December 27, 2007Inventors: Volker Karrer, Bernhard Lichtinger, Johannes Mehler, Folker Renken, Florian Schupp, Arnoud Smit
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Patent number: 7272015Abstract: To improve EMC shielding for an electronic unit containing at least one electronic power device operated at high frequency and a metal housing thermally coupled to the device to provide heat dissipation, the power device with a device terminal is thermally and electrically coupled to a first metal plate. The first metal plate is coupled in turn to a second metal plate in a particular manner via a first insulating layer. A metal housing with a heat sink through which a cooling fluid can flow is disposed, on another side of a second insulating layer. The improvement in EMC is based on an internal short-circuiting of an interference current produced by the power device over a very short loop.Type: GrantFiled: January 10, 2006Date of Patent: September 18, 2007Assignee: Siemens AktiengesellschaftInventors: Volker Karrer, Michael Kirchberger
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Publication number: 20060152912Abstract: To improve EMC shielding for an electronic unit containing at least one electronic power device operated at high frequency and a metal housing thermally coupled to the device to provide heat dissipation, the power device with a device terminal is thermally and electrically coupled to a first metal plate. The first metal plate is coupled in turn to a second metal plate in a particular manner via a first insulating layer. A metal housing with a heat sink through which a cooling fluid can flow is disposed, on another side of a second insulating layer. The improvement in EMC is based on an internal short-circuiting of an interference current produced by the power device over a very short loop.Type: ApplicationFiled: January 10, 2006Publication date: July 13, 2006Inventors: Volker Karrer, Michael Kirchberger
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Patent number: 6989658Abstract: A circuit design for a circuit for switching currents is disclosed, comprising at least one switch element (T1 . . . Tn, T1? . . . Tn?), and at least one respective main current conductor (D, S, A) for interlinking the switch element, the poles (V+, GND) of a current source and an energy accumulator (C). The aim of the invention is to reduce ohmic resistance and inductive resistance of such a circuit. To this end, an ancillary current conductor (D1, S1, A1) that has a lower current carrying capacity than the main current conductor is connected in parallel to at least one of the main current conductors (D, S, A).Type: GrantFiled: August 28, 2003Date of Patent: January 24, 2006Assignee: Siemens AktiengesellschaftInventors: Reinhard Allwang, Volker Eichenseher, Martin Götzenberger, Dirk Hofmann, Volker Karrer
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Publication number: 20050094332Abstract: A protective circuit (1), particularly for overvoltage-protecting an electronic motor control unit, comprises a signal connection receiving and/or emitting an electrical signal, a switching element (4) which activates or deactivates a protective interrupter and is controllable via a control input, and a control circuit (5), the input side of which is connected to the signal connection while the output side thereof is connected to the control input of the switching element (4) in order to activate or deactivate the protective interrupter according to the electrical state at the signal connection. The control circuit (5) has a hysteresis characteristic regarding the electrical state at the signal connection.Type: ApplicationFiled: November 12, 2004Publication date: May 5, 2005Inventors: Franz Allmeier, Volker Karrer, Thomas Reindl
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Patent number: 6838830Abstract: Half-bridge circuit, especially for connection of an electric motor in a vehicle, with a low side circuit element (1) with a control input (3, G1), a high side circuit element (2) with a control input (6, G2), in which the low side circuit element (1) and the high side circuit element (2) are connected in series between the voltage terminal and a ground terminal and an output (OUT) to control an electrical load is arranged between the high side circuit element and the low side circuit element, implemented according to the invention by integration in an integrated circuit.Type: GrantFiled: September 11, 2002Date of Patent: January 4, 2005Assignee: Siemens AktiengesellschaftInventor: Volker Karrer
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Patent number: 6723926Abstract: A mounting configuration of electric and/or electronic components, in particular electrolytic capacitors, on a printed circuit board is described. The printed circuit board is formed by at least two metallic plates insulated electrically from one another by an insulating layer that preferably conducts heat well and has holes for the connecting pins of the electric and/or electronic components. Through which holes the connecting pins are plugged and connected electrically to the respectively associated metallic plate.Type: GrantFiled: April 29, 2002Date of Patent: April 20, 2004Assignee: Siemens AktiengesellschaftInventors: Kurt Gross, Volker Karrer, Michael Kirchberger, Stefan Kulig, Gunter Ludwig, Hans Rappl
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Publication number: 20040039999Abstract: A circuit design for a circuit for switching currents is disclosed, comprising at least one switch element (T1 . . . Tn, T1′ . . . Tn′), and at least one respective main current conductor (D, S, A) for interlinking the switch element, the poles (V+, GND) of a current source and an energy accumulator (C). The aim of the invention is to reduce ohmic resistance and inductive resistance of such a circuit. To this end, an ancillary current conductor (D1, S1, A1) that has a lower current carrying capacity than the main current conductor is connected in parallel to at least one of the main current conductors (D, S, A).Type: ApplicationFiled: August 28, 2003Publication date: February 26, 2004Inventors: Reinhard Allwang, Volker Eichenseher, Martin Gotzenberger, Dirk Hofmann, Volker Karrer
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Publication number: 20030057530Abstract: Half-bridge circuit, especially for connection of an electric motor in a vehicle, with a low side circuit element (1) with a control input (3, G1), a high side circuit element (2) with a control input (6, G2), in which the low side circuit element (1) and the high side circuit element (2) are connected in series between the voltage terminal and a ground terminal and an output (OUT) to control an electrical load is arranged between the high side circuit element and the low side circuit element, implemented according to the invention by integration in an integrated circuit.Type: ApplicationFiled: September 11, 2002Publication date: March 27, 2003Inventor: Volker Karrer
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Publication number: 20020159238Abstract: A mounting configuration of electric and/or electronic components, in particular electrolytic capacitors, on a printed circuit board is described. The printed circuit board is formed by at least two metallic plates insulated electrically from one another by an insulating layer that preferably conducts heat well and has holes for the connecting pins of the electric and/or electronic components. Through which holes the connecting pins are plugged and connected electrically to the respectively associated metallic plate.Type: ApplicationFiled: April 29, 2002Publication date: October 31, 2002Inventors: Kurt Gross, Volker Karrer, Michael Kirchberger, Stefan Kulig, Gunter Ludwig, Hans Rappl