Patents by Inventor Martin Bennauer
Martin Bennauer 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: 11047263Abstract: A method for operating a steam turbine where steam turbine has at least two sub-turbines, wherein the steam turbine is paired with a steam turbine controller which has a sub-turbine controller for each of the sub-turbines, and each sub-turbine controller compares respective target values with respective actual values of the respective sub-turbine during operation in order to determine a respective control deviation for each sub-turbine.Type: GrantFiled: August 22, 2018Date of Patent: June 29, 2021Assignee: Siemens Energy GLobal GmbH & Co. KGInventors: Martin Bennauer, Marc Borowski, Christoph Schindler, David Veltmann, Michael Winkel
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Patent number: 11008895Abstract: A method for operating a steam turbine where steam turbine has at least two sub-turbines, wherein the steam turbine is paired with a steam turbine controller which has a sub-turbine controller for each of the sub-turbines, and each sub-turbine controller compares respective target values with respective actual values of the respective sub-turbine during operation in order to determine a respective control deviation for each sub-turbine.Type: GrantFiled: August 22, 2018Date of Patent: May 18, 2021Assignee: Siemens Energy GLobal GmbH & Co. KGInventors: Martin Bennauer, Marc Borowski, Christoph Schindler, David Veltmann, Michael Winkel
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Publication number: 20200256217Abstract: A method for operating a steam turbine where steam turbine has at least two sub-turbines, wherein the steam turbine is paired with a steam turbine controller which has a sub-turbine controller for each of the sub-turbines, and each sub-turbine controller compares respective target values with respective actual values of the respective sub-turbine during operation in order to determine a respective control deviation for each sub-turbine.Type: ApplicationFiled: August 22, 2018Publication date: August 13, 2020Applicant: Siemens AktiengesellschaftInventors: Martin Bennauer, Marc Borowski, Christoph Schindler, David Veltmann, Michael Winkel
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Patent number: 10436058Abstract: A turbine control unit and method for controlling a turbine, in particular for controlling the start-up of a turbine, the unit being designed as a cascade controller having a master controller and an inner controller, the master controller being a thermal stress controller for the components subjected to thermal stress.Type: GrantFiled: October 5, 2015Date of Patent: October 8, 2019Assignee: Siemens AktiengesellschaftInventors: Martin Bennauer, Matthias Heue, Martin Ophey, Christoph Schindler
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Publication number: 20190305705Abstract: A method for supplying an excitation current to an excitation winding of a rotor of a three-phase generator of a system for producing a three-phase alternating voltage to be fed into a power network. A pulsed excitation current is supplied to the excitation winding if a rotational frequency of the rotor deviates from a network frequency of the power network.Type: ApplicationFiled: April 21, 2017Publication date: October 3, 2019Applicant: Siemens AktiengesellschaftInventors: Martin Bennauer, Manuel Gutermuth, Christian Jäkel, Meinolf Klocke, Mario Koebe, Matthias Kowalski, Marian-Peter Pieczyk, Holger Romanowski, Florian Röhr, Milan Schmahl, Christoph Lehmann, Pascal Piasecki, Andrey Mashkin, Kai Brune
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Publication number: 20190113085Abstract: A turbomachine train with two shaft parts which each have a fixedly attached grooved wheel, with a first overrunning clutch, with two rotational speed sensors and with a control device. The clutch is designed to couple and decouple the first shaft part to and from the second shaft part. The first rotational speed sensor measures the rotational speed of the first grooved wheel. The second rotational speed sensor measures the rotational speed of the second grooved wheel. The control device determines the differential angle between the first shaft part and the second shaft part and accelerates the turbomachines, with an acceleration value determined on the basis of the measured rotational speeds and on the basis of the differential angle, such that the two shaft parts couple together at a predetermined target coupling angle.Type: ApplicationFiled: March 15, 2017Publication date: April 18, 2019Applicant: Siemens AktiengesellschaftInventors: David Veltmann, Martin Bennauer, Christoph Schindler
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Patent number: 10036275Abstract: A method for testing an overspeed protection apparatus of a single-shaft system that includes: a) operating the system at nominal speed and under electrical load, wherein the load is selected to be low enough that, after dropping the load, the speed of the system rises such that the speed remains below steam turbine threshold speed lower than gas turbine threshold speed, such that first overspeed protection is triggered when the speed of the steam turbine reaches the steam turbine threshold speed, and second overspeed protection is triggered when the speed of the gas turbine reaches the gas turbine threshold speed; b) dropping the load; c) increasing the mass flow of the steam introduced into the steam turbine and/or of the fuel introduced into the gas turbine such that the speed of the steam turbine reaches the steam turbine threshold speed; d) testing whether the first overspeed protection is triggered.Type: GrantFiled: September 8, 2014Date of Patent: July 31, 2018Assignee: Siemens AktiengesellschaftInventors: Martin Ophey, Martin Bennauer, Thorsten Engler, Susanne Haas, Andreas Pahl, Marian-Peter Pieczyk, Martin Stapper, David Veltmann
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Patent number: 9976440Abstract: A method for testing an overspeed protection mechanism of a single-shaft combined-cycle plant that includes, during testing, an electrical load is first connected to the generator and the load is disconnected and a trigger threshold value can be achieved at a test moment in time, thereby triggering the overspeed protection mechanism.Type: GrantFiled: May 26, 2014Date of Patent: May 22, 2018Assignee: Siemens AktiengesellschaftInventors: Martin Bennauer, Edwin Gobrecht, Martin Hallekamp
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Publication number: 20170241285Abstract: A turbine control unit and method for controlling a turbine, in particular for controlling the start-up of a turbine, the unit being designed as a cascade controller having a master controller and an inner controller, the master controller being a thermal stress controller for the components subjected to thermal stress.Type: ApplicationFiled: October 5, 2015Publication date: August 24, 2017Applicant: Siemens AktiengesellschaftInventors: Martin Bennauer, Matthias Heue, Martin Ophey, Christoph Schindler
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Publication number: 20170175590Abstract: A method for coupling a rotational device, particularly a steam turbine, and a shaft device, particularly a gas turbine, the method including the following steps: accelerating the rotational device up to an output rotational speed that is below the rotational speed of the shaft device; detecting a differential angle between the shaft device and the rotational device; and accelerating the rotational device with an acceleration value that is derived from the target rotational speed difference, which is formed as a function of the detected differential angle, the acceleration and a desired target coupling angle. An associated arrangement couples a rotational device.Type: ApplicationFiled: January 15, 2015Publication date: June 22, 2017Applicant: Siemens AktiengesellschaftInventors: Martin Bennauer, Mirko Dänner, Patrick Becker, Daniel Pieper, Gerta Zimmerü
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Publication number: 20160201501Abstract: A method for testing an overspeed protection apparatus of a single-shaft system that includes: a) operating the system at nominal speed and under electrical load, wherein the load is selected to be low enough that, after dropping the load, the speed of the system rises such that the speed remains below steam turbine threshold speed lower than gas turbine threshold speed, such that first overspeed protection is triggered when the speed of the steam turbine reaches the steam turbine threshold speed, and second overspeed protection is triggered when the speed of the gas turbine reaches the gas turbine threshold speed; b) dropping the load; c) increasing the mass flow of the steam introduced into the steam turbine and/or of the fuel introduced into the gas turbine such that the speed of the steam turbine reaches the steam turbine threshold speed; d) testing whether the first overspeed protection is triggered.Type: ApplicationFiled: September 8, 2014Publication date: July 14, 2016Applicant: Siemens AktiengesellschaftInventors: Martin Ophey, Martin Bennauer, Thorsten Engler, Susanne Haas, Andreas Pahl, Marian-Peter Pieczyk, Martin Stapper, David Veltmann
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Publication number: 20160123183Abstract: A method for testing an overspeed protection mechanism of a single-shaft combined-cycle plant that includes, during testing, an electrical load is first connected to the generator and the load is disconnected and a trigger threshold value can be achieved at a test moment in time, thereby triggering the overspeed protection mechanism.Type: ApplicationFiled: May 26, 2014Publication date: May 5, 2016Applicant: Siemens AktiengesellschaftInventors: Martin Bennauer, Edwin Gobrecht, Martin Hallekamp
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Publication number: 20150135721Abstract: A method for supporting a mains frequency in an energy generation plant is provided. The energy generation plant may be operated using unthrottled high-pressure valves, and the throttling action of the medium-pressure valves may be canceled when the mains frequency drops.Type: ApplicationFiled: June 13, 2013Publication date: May 21, 2015Applicant: Siemens AktiengesellschaftInventors: Martin Bennauer, Edwin Gobrecht, Matthias Heue
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Patent number: 8678034Abstract: A quick acting control valve for a steam turbine is provided. The quick acting control valve includes a valve box and a control valve cone which is arranged in the valve box so as to be displaceable along its center axis, whereby the control valve cone may be brought into an open position in which the control valve cone, with its control valve cone surface is lifted off the valve box and into a closed position in which the control valve cone rests against the valve box with its control valve cone surface, and a quick acting valve piston which is arranged in the valve box so as to face the back of the control valve cone facing away from the control valve cone surface, the quick acting control valve piston, on its outer peripheral edge, always resting on the valve box in a steam-tight manner.Type: GrantFiled: March 8, 2010Date of Patent: March 25, 2014Assignee: Siemens AktiengesellschaftInventors: Martin Bennauer, Ningsih Flohr, Michael Nienhaus, Christoph Schindler, Dirk Weltersbach
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Patent number: 8624414Abstract: A method for controlling a steam power plant is provided. The method includes the steps of providing a first signal showing a reduction of the current power level of the generator, generating a second signal showing a short circuit interruption as a function of the first signal, resetting the second signal after a predetermined time period and blocking the second signal for a predetermined period of time, stopping and subsequently starting the turbine as a function of the second signal, generating a third signal showing a load rejection as a function of the first signal, and permanently stopping the turbine as a function of the third signal. A device for controlling a steam power plant is also provided.Type: GrantFiled: August 17, 2009Date of Patent: January 7, 2014Assignee: Siemens AktiengesellschaftInventors: Martin Bennauer, Heribert Werthes
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Publication number: 20120174584Abstract: A power plant system and a method for operating a power plant system are provided. An overload control valve is disposed in an overload line and can be actuated by means of a pressure regulator wherein the overload control valve opens before a diverting control valve opens the valve forming a bypass between the high-pressure steam inlet and the high-pressure steam outlet as soon as a target valve is exceeded.Type: ApplicationFiled: September 9, 2010Publication date: July 12, 2012Inventors: Martin Bennauer, Edwin Gobrecht, Karsten Peters
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Publication number: 20120056114Abstract: A quick acting control valve for a steam turbine is provided. The quick acting control valve includes a valve box and a control valve cone which is arranged in the valve box so as to be displaceable along its center axis, whereby the control valve cone may be brought into an open position in which the control valve cone, with its control valve cone surface is lifted off the valve box and into a closed position in which the control valve cone rests against the valve box with its control valve cone surface, and a quick acting valve piston which is arranged in the valve box so as to face the back of the control valve cone facing away from the control valve cone surface, the quick acting control valve piston, on its outer peripheral edge, always resting on the valve box in a steam-tight manner.Type: ApplicationFiled: March 8, 2010Publication date: March 8, 2012Inventors: Martin Bennauer, Ningsih Flohr, Michael Nienhaus, Christoph Schindler, Dirk Weltersbach
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Publication number: 20110156408Abstract: A method for controlling a steam power plant is provided. The method includes the steps of providing a first signal showing a reduction of the current power level of the generator, generating a second signal showing a short circuit interruption as a function of the first signal, resetting the second signal after a predetermined time period and blocking the second signal for a predetermined period of time, stopping and subsequently starting the turbine as a function of the second signal, generating a third signal showing a load rejection as a function of the first signal, and permanently stopping the turbine as a function of the third signal. A device for controlling a steam power plant is also provided.Type: ApplicationFiled: August 17, 2009Publication date: June 30, 2011Inventors: Martin Bennauer, Heribert Werthes