Patents by Inventor Rudolf Wieser
Rudolf Wieser 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: 10855215Abstract: The application relates to a power generation system, including a synchronous generator for converting mechanical power into electrical power at an output side configured for connecting an AC power grid, a first rectifier and a second rectifier each having an AC side connected to the output side of the generator and a DC side, an exciter configured for exciting the, and a selector device having an input side and an output side, the input side connected to the DC side of the first rectifier and to the DC side of the second rectifier and the output side connected to the exciter, the selector device is configured for switching the DC sides in series or in parallel or for transmitting DC power from the first rectifier and the second rectifier corresponding to an arbitrary split ratio to the output side.Type: GrantFiled: October 21, 2019Date of Patent: December 1, 2020Assignee: ABB Schweiz AGInventors: Matthias Baechle, Rudolf Wieser, Peter Al-Hokayem, Eduardo Rohr
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Publication number: 20200052629Abstract: The invention relates to a power generation system, comprising a synchronous generator (3) for converting mechanical power into electrical power at an output side configured for connecting an AC power grid (1), a first rectifier (12) and a second rectifier (13) each having an AC side (14) connected to the output side of the generator (3) and a DC side (15), an exciter (9) configured for exciting the, and a selector device (18) having an input side (17) and an output side (19), the input side (17) connected to the DC side (15) of the first rectifier (12) and to the DC side (15) of the second rectifier (13) and the output side (19) connected to the exciter (9), whereby the selector device (18) is configured for switching the DC sides (15) in series or in parallel or for transmitting DC power from the first rectifier (12) and the second rectifier (13) corresponding to an arbitrary split ratio to the output side (19).Type: ApplicationFiled: October 21, 2019Publication date: February 13, 2020Inventors: Matthias Baechle, Rudolf Wieser, Peter Al-Hokayem, Eduardo Rohr
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Patent number: 8102132Abstract: A starting apparatus is disclosed for at least two synchronous machines, which starting apparatus includes an exciter unit which is provided for each synchronous machine and is associated with the respective synchronous machine. Each exciter unit can be connected to the field winding of the associated synchronous machine. A superordinate control unit is provided, with the superordinate control unit being connected via a communication link to each exciter unit. Furthermore, the starting apparatus includes at least one stator feed unit and at least one switching device, which is provided for each stator feed unit and is associated with the respective stator feed unit, in which case the respective switching device can be connected to the associated stator feed unit, the respective switching device can be connected to at least one synchronous machine, and the switching devices can be connected to one another when there are a plurality of switching devices.Type: GrantFiled: May 26, 2009Date of Patent: January 24, 2012Assignee: ABB Schweiz AGInventors: Tobias Keller, Rudolf Wieser
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Patent number: 7973427Abstract: The disclosure relates to a converter control unit or power system stabilizing unit for counteracting oscillations in electric power systems that is equipped and employed to provide and processes information for system-wide monitoring, protection, control and metering. It comprises means for synchronized (e.g. via GPS or another absolute/global time reference) sampling of voltages and/or currents, means for down-sampling in order to decrease the number of samples, and means for calculating phasors, i.e. time stamped amplitude and phase angle of the voltages and/or currents.Type: GrantFiled: August 29, 2008Date of Patent: July 5, 2011Assignee: ABB Research LtdInventors: Petr Korba, Rudolf Wieser, Srinivas Ponnaluri, Mats Larsson, Alexandre Oudalov, Jose Taborda, Peter Steimer
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Publication number: 20090295312Abstract: A starting apparatus is disclosed for at least two synchronous machines, which starting apparatus includes an exciter unit which is provided for each synchronous machine and is associated with the respective synchronous machine. Each exciter unit can be connected to the field winding of the associated synchronous machine. A superordinate control unit is provided, with the superordinate control unit being connected via a communication link to each exciter unit. Furthermore, the starting apparatus includes at least one stator feed unit and at least one switching device, which is provided for each stator feed unit and is associated with the respective stator feed unit, in which case the respective switching device can be connected to the associated stator feed unit, the respective switching device can be connected to at least one synchronous machine, and the switching devices can be connected to one another when there are a plurality of switching devices.Type: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Applicant: ABB Schweiz AGInventors: Tobias KELLER, Rudolf WIESER
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Publication number: 20090079267Abstract: The disclosure relates to a converter control unit or power system stabilizing unit for counteracting oscillations in electric power systems that is equipped and employed to provide and processes information for system-wide monitoring, protection, control and metering. It comprises means for synchronized (e.g. via GPS or another absolute/global time reference) sampling of voltages and/or currents, means for down-sampling in order to decrease the number of samples, and means for calculating phasors, i.e. time stamped amplitude and phase angle of the voltages and/or currents.Type: ApplicationFiled: August 29, 2008Publication date: March 26, 2009Applicant: ABB Research LtdInventors: Petr Korba, Rudolf Wieser, Srinivas Ponnaluri, Mats Larsson, Alexandre Oudalov, Jose Taborda, Peter Steimer
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Patent number: 7508640Abstract: The document specifies a method for fault handling in a converter circuit for switching three voltage levels, in which the converter circuit has a converter subsystem provided for each phase (R,S,T), in which a top fault current path (A) or a bottom fault current path (B) in the converter subsystem is detected, the top fault current path (A) running through the first, second, third and sixth power semiconductor switches in the converter subsystem or through the first and fifth power semiconductor switches (S1, S5) in the converter subsystem, and the bottom fault current path (B) running through the second, third, fourth and fifth power semiconductor switches in the converter subsystem or through the fourth and sixth power semiconductor switches in the converter subsystem, and in which the power semiconductor switches are switched on the basis of a fault switching sequence.Type: GrantFiled: December 18, 2006Date of Patent: March 24, 2009Assignee: ABB Schweiz AGInventors: Gerold Knapp, Gerhard Hochstuhl, Rudolf Wieser, Luc Meysenc
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Publication number: 20080204959Abstract: The document specifies a method for fault handling in a converter circuit for switching three voltage levels, in which the converter circuit has a converter subsystem provided for each phase (R,S,T), in which a top fault current path (A) or a bottom fault current path (B) in the converter subsystem is detected, the top fault current path (A) running through the first, second, third and sixth power semiconductor switches in the converter subsystem or through the first and fifth power semiconductor switches (S1, S5) in the converter subsystem, and the bottom fault current path (B) running through the second, third, fourth and fifth power semiconductor switches in the converter subsystem or through the fourth and sixth power semiconductor switches in the converter subsystem, and in which the power semiconductor switches are switched on the basis of a fault switching sequence.Type: ApplicationFiled: December 18, 2006Publication date: August 28, 2008Applicant: ABB Schweiz AGInventors: Gerold Knapp, Gerhard Hochstuhl, Rudolf Wieser, Luc Meysenc
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Patent number: 3942584Abstract: This invention relates to an improvement in a hot water pump having a cooled sealing housing in a pump cover in the upper pump portion. The improvement comprises means mounting the sealing housing in a recess of the pump cover in a manner such that an annular air space is present between the outer surface of said sealing housing and the inner surface of the recess of the pump cover, said air space being in communication with the exterior space surrounding the pump.Type: GrantFiled: May 10, 1972Date of Patent: March 9, 1976Assignee: Maschinenfabrik Andritz ActiengesellschaftInventor: Rudolf Wieser