Patents by Inventor Rolf Disselnkötter
Rolf Disselnkötter 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: 11029342Abstract: A device for measuring electric current includes: a plurality of magnetic field sensor elements positioned along one or more continuous closed paths encircling a current carrying conductor, each sensor element being sensitive to one vector component of a magnetic field generated by the electric current, vector directions of sensitivity for each sensor element being oriented to be tangential with the closed path at each sensor location, each sensor element generating an output signal, the output signal of each sensor element being amplified by an element-specific gain factor, the amplified output signals of the sensor elements being electronically combined to form a measurement signal representing a value proportional to the current flowing in the current carrying conductor. At least one sensor element on a closed path has a sensitivity which is different from sensitivities of other sensor elements on a same path.Type: GrantFiled: March 21, 2019Date of Patent: June 8, 2021Assignee: ABB SCHWEIZ AGInventors: Rolf Disselnkoetter, Roberto Ottoboni, Sergio Toscani
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Publication number: 20190293688Abstract: A device for measuring electric current includes: a plurality of magnetic field sensor elements positioned along one or more continuous closed paths encircling a current carrying conductor, each sensor element being sensitive to one vector component of a magnetic field generated by the electric current, vector directions of sensitivity for each sensor element being oriented to be tangential with the closed path at each sensor location, each sensor element generating an output signal, the output signal of each sensor element being amplified by an element-specific gain factor, the amplified output signals of the sensor elements being electronically combined to form a measurement signal representing a value proportional to the current flowing in the current carrying conductor. At least one sensor element on a closed path has a sensitivity which is different from sensitivities of other sensor elements on a same path.Type: ApplicationFiled: March 21, 2019Publication date: September 26, 2019Inventors: Rolf Disselnkoetter, Roberto Ottoboni, Sergio Toscani
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Patent number: 10386246Abstract: A nonintrusive temperature measuring apparatus for measuring the fluid temperature in at least partially thermally insulated tubes of installations in the processing industry, has the tube is completely sheathed by a thermal insulation layer at least at the measurement point, wherein a sensor electronics system with a temperature sensor is mounted onto the tube within the thermal insulation layer, a connecting electronics system is arranged outside the thermal insulation layer, and wherein the sensor electronics system and the connecting electronics system have one or more energy transmitters for wireless energy transmission for supplying the sensor electronics system and one or more temperature transmitters for wireless communication for transmitting the temperature measurement values from the sensor electronics system to the connecting electronics system.Type: GrantFiled: March 30, 2017Date of Patent: August 20, 2019Assignee: ABB SCHWEIZ AGInventors: Rolf Disselnkoetter, Joerg Gebhardt, Stephan Wildermuth
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Patent number: 10088506Abstract: A method for identifying a fault condition in an electrical machine in which at least a stator or a rotor has parallel winding branches is disclosed. A measurement is carried out for obtaining a set of circulating current values between two parallel winding branches of which each winding branch includes a single coil. A frequency analysis is applied on the set of circulating current values to obtain at least one frequency component. A fault condition of the electrical machine is determined on the basis of the at least one frequency component.Type: GrantFiled: October 3, 2013Date of Patent: October 2, 2018Assignee: ABB Research Ltd.Inventors: Pedro Rodriguez, Cajetan Pinto, Maciej Orman, Michal Orkisz, Ulf Ahrend, Rolf Disselnkötter, Pawel Rzeszucinski, James Ottewill
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Publication number: 20170284873Abstract: A nonintrusive temperature measuring apparatus for measuring the fluid temperature in at least partially thermally insulated tubes of installations in the processing industry, has the tube is completely sheathed by a thermal insulation layer at least at the measurement point, wherein a sensor electronics system with a temperature sensor is mounted onto the tube within the thermal insulation layer, a connecting electronics system is arranged outside the thermal insulation layer, and wherein the sensor electronics system and the connecting electronics system have one or more energy transmitters for wireless energy transmission for supplying the sensor electronics system and one or more temperature transmitters for wireless communication for transmitting the temperature measurement values from the sensor electronics system to the connecting electronics system.Type: ApplicationFiled: March 30, 2017Publication date: October 5, 2017Inventors: Rolf Disselnkoetter, Joerg Gebhardt, Stephan Wildermuth
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Patent number: 9646748Abstract: A resistive voltage divider includes first and second resistors, which are electrically connected in series and are made of a resistive film material which is applied in the form of a trace onto an insulating substrate. The divider's voltage ratio has a value between ten and one million. To improve the accuracy of the voltage divider, the first and second resistors are made of the same resistive film material, have a trace length above a corresponding specific trace length, and have approximately the same trace width.Type: GrantFiled: August 23, 2013Date of Patent: May 9, 2017Assignee: ABB AGInventors: Adrian Hozoi, Rolf Disselnkötter
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Patent number: 9645174Abstract: A resistive voltage divider includes a first resistor and a second resistor electrically connected in series. Each of the resistors is made of an electrically resistive film material and applied in the form of a trace onto an insulating substrate. The divider's voltage ratio has a value between one hundred and one million, where two ends of the trace of the second resistor overlap at least in part with a first and a second) contacting terminal, respectively, and two ends of the trace of the first resistor overlap at least in part with the first and third contacting terminal, respectively. In order to decrease the parasitic capacitance between the first contacting terminal and the third contacting terminal, the second contacting terminal is placed with at least a screening part between the first and the third contacting terminals.Type: GrantFiled: August 26, 2013Date of Patent: May 9, 2017Assignee: ABB AGInventors: Adrian Hozoi, Rolf Disselnkötter
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Patent number: 9507006Abstract: An exemplary method for calibrating a current transducer of the Rogowski type including a Rogowski coil sensor and an electronic device is performed by determining and correcting the sensitivity of the current transducer of the Rogowski type through the measurement of the self-inductance LRCCT of the coil using the electronic device.Type: GrantFiled: October 13, 2014Date of Patent: November 29, 2016Assignee: ABB Schweiz AGInventors: Joris Pascal, Rolf Disselnkötter, Franz Zurfluh, Bernhard Deck
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Patent number: 9299484Abstract: A resistive structure has an improved electric field profile deposited on the surface of a cylindrical insulating substrate. At least one resistive path or trace is provided with a helix-looking shape and is directly printed on the surface of the insulating substrate. A resistive voltage divider includes first and second resistors electrically connected in series, where each resistor is made of one or more traces of electrically resistive film material applied onto a cylindrical insulating substrate. At least one of the traces is shaped like a helix and is applied onto the substrate by direct printing.Type: GrantFiled: August 26, 2013Date of Patent: March 29, 2016Assignee: ABB AGInventors: Adrian Hozoi, Rolf Disselnkötter, Marek Pavlas
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Publication number: 20150276823Abstract: A method for identifying a fault condition in an electrical machine in which at least a stator or a rotor has parallel winding branches is disclosed. A measurement is carried out for obtaining a set of circulating current values between two parallel winding branches of which each winding branch includes a single coil. A frequency analysis is applied on the set of circulating current values to obtain at least one frequency component. A fault condition of the electrical machine is determined on the basis of the at least one frequency component.Type: ApplicationFiled: October 3, 2013Publication date: October 1, 2015Inventors: Pedro Rodriguez, Cajetan Pinto, Maciej Orman, Michal Orkisz, Ulf Ahrend, Rolf Disselnkötter, Pawel Rzeszucinski, James Ottewill
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Publication number: 20150028852Abstract: An arrangement for measuring a current with a Rogowski type current transducer and transducer electronics. The current transducer has a primary conductor winding for carrying the rated current to be measured, and a secondary conductor winding. The secondary conductor winding adapted to induce a voltage signal VS? between a pair of second terminals. The current transducer having a third conductor winding adapted to receive a calibration current signal. The voltage signal VS? contains a coil sensitivity S and is a superposition of a rated current voltage signal and an additional calibration signal. The transducer electronics being adapted to amplify both the current voltage signal and the calibration signal in the same amplifier and divide the amplified current voltage signal by that part of the amplified calibration signal that contains the coil sensitivity and the gain.Type: ApplicationFiled: October 13, 2014Publication date: January 29, 2015Applicant: ABB TECHNOLOGY AGInventors: Joris PASCAL, Yannick MARET, Jean-Baptiste KAMMERER, Rolf DISSELNKÖTTER
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Publication number: 20150028850Abstract: An exemplary method for calibrating a current transducer of the Rogowski type including a Rogowski coil sensor and an electronic device is performed by determining and correcting the sensitivity of the current transducer of the Rogowski type through the measurement of the self-inductance LRCCT of the coil using the electronic device.Type: ApplicationFiled: October 13, 2014Publication date: January 29, 2015Applicant: ABB TECHNOLOGY AGInventors: Joris PASCAL, Rolf DISSELNKÖTTER, Franz ZURFLUH, Bernhard DECK
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Publication number: 20140159744Abstract: An exemplary electrical device for measuring alternating current or current pulses includes at least one coil of electrically conductive wire being wound around a non-magnetic carrier, where the non-magnetic carrier is made of glass.Type: ApplicationFiled: January 16, 2014Publication date: June 12, 2014Applicant: ABB Technology AGInventors: Adrian HOZOI, Rolf Disselnkötter
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Patent number: 8698485Abstract: An exemplary current sensor operating in accordance with the principle of compensation includes a primary winding creating a magnetic field based on a current to be measured, a secondary winding generating a magnetic field compensating the primary winding based on a compensation current. The current sensor also includes a magnetic core, a terminating resistor connected in series to the secondary winding, and sensor means. A booster circuit is connected downstream of the sensor means and feeds the compensation current to the secondary winding via the terminating resistor. The booster circuit includes a switched mode amplifier with a pulse width and density modulator that operates based on pulse width and density modulation, turning the compensation current into a pulse width and density modulated current. The switched mode amplifier having a switching frequency that is high at when the compensation current is small and low when the compensation current is high.Type: GrantFiled: April 20, 2012Date of Patent: April 15, 2014Assignee: ABB AGInventors: Adrian Hozoi, Rolf Disselnkötter
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Publication number: 20130342227Abstract: A resistive structure has an improved electric field profile deposited on the surface of a cylindrical insulating substrate. At least one resistive path or trace is provided with a helix-looking shape and is directly printed on the surface of the insulating substrate. A resistive voltage divider includes first and second resistors electrically connected in series, where each resistor is made of one or more traces of electrically resistive film material applied onto a cylindrical insulating substrate. At least one of the traces is shaped like a helix and is applied onto the substrate by direct printing.Type: ApplicationFiled: August 26, 2013Publication date: December 26, 2013Applicant: ABB AGInventors: Adrian HOZOI, Rolf DISSELNKÖTTER, Marek PAVLAS
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Publication number: 20130342187Abstract: A resistive voltage divider includes a first resistor and a second resistor electrically connected in series. Each of the resistors is made of an electrically resistive film material and applied in the form of a trace onto an insulating substrate. The divider's voltage ratio has a value between one hundred and one million, where two ends of the trace of the second resistor overlap at least in part with a first and a second) contacting terminal, respectively, and two ends of the trace of the first resistor overlap at least in part with the first and third contacting terminal, respectively. In order to decrease the parasitic capacitance between the first contacting terminal and the third contacting terminal, the second contacting terminal is placed with at least a screening part between the first and the third contacting terminals.Type: ApplicationFiled: August 26, 2013Publication date: December 26, 2013Applicant: ABB AGInventors: Adrian HOZOI, Rolf DISSELNKÖTTER
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Publication number: 20130335106Abstract: A resistive voltage divider includes first and second resistors, which are electrically connected in series and are made of a resistive film material which is applied in the form of a trace onto an insulating substrate. The divider's voltage ratio has a value between ten and one million. To improve the accuracy of the voltage divider, the first and second resistors are made of the same resistive film material, have a trace length above a corresponding specific trace length, and have approximately the same trace width.Type: ApplicationFiled: August 23, 2013Publication date: December 19, 2013Applicant: ABB AGInventors: Adrian HOZOI, Rolf Disselnkötter
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Publication number: 20120268114Abstract: A current sensor is disclosed, with a ring-shaped magnetic core, the core enclosing the primary conductor with the current to be measured, the core having an air-gap containing a sensor element for measuring the magnetic core induction, whereby the cross-sectional area of the air-gap is larger than the cross-sectional area of the core.Type: ApplicationFiled: April 19, 2012Publication date: October 25, 2012Applicant: ABB AGInventors: Rolf DISSELNKÖTTER, Adrian Hozoi
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Publication number: 20120268108Abstract: An exemplary current sensor operating in accordance with the principle of compensation includes a primary winding creating a magnetic field based on a current to be measured, a secondary winding generating a magnetic field compensating the primary winding based on a compensation current. The current sensor also includes a magnetic core, a terminating resistor connected in series to the secondary winding, and sensor means. A booster circuit is connected downstream of the sensor means and feeds the compensation current to the secondary winding via the terminating resistor. The booster circuit includes a switched mode amplifier with a pulse width and density modulator that operates based on pulse width and density modulation, turning the compensation current into a pulse width and density modulated current. The switched mode amplifier having a switching frequency that is high at when the compensation current is small and low when the compensation current is high.Type: ApplicationFiled: April 20, 2012Publication date: October 25, 2012Applicant: ABB AGInventors: Adrian HOZOI, Rolf Disselnkötter
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Patent number: 7866219Abstract: A measuring instrument to capture a physical/chemical measured value, including a sensor unit, which is linked via a contactless interface to a transmitter unit, for passing on to a central analysis unit, wherein the sensor unit includes an at least partly internal sensor element which vibrates against a sensor housing because of operation, and which is linked, contactlessly and inside the sensor unit, for sensor signal transmission, via a first transmission/reception unit, to a complementary second transmission/reception unit, which is arranged at a fixed location relative to the sensor housing, and which is also linked, contactlessly and outside the sensor unit, to a third transmission/reception unit of the transmitter unit.Type: GrantFiled: August 21, 2007Date of Patent: January 11, 2011Assignee: ABB Patent GmbHInventors: Frank Kassubek, Lothar Deppe, Rolf Disselnkötter, Steffen Keller, Jörg Gebhardt, René Friedrichs, Beat Kramer