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).

  • Publication number: 20190293688
    Abstract: 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: Application
    Filed: March 21, 2019
    Publication date: September 26, 2019
    Inventors: Rolf Disselnkoetter, Roberto Ottoboni, Sergio Toscani
  • Patent number: 10386246
    Abstract: 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: Grant
    Filed: March 30, 2017
    Date of Patent: August 20, 2019
    Assignee: ABB SCHWEIZ AG
    Inventors: Rolf Disselnkoetter, Joerg Gebhardt, Stephan Wildermuth
  • Patent number: 10088506
    Abstract: 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: Grant
    Filed: October 3, 2013
    Date of Patent: October 2, 2018
    Assignee: ABB Research Ltd.
    Inventors: Pedro Rodriguez, Cajetan Pinto, Maciej Orman, Michal Orkisz, Ulf Ahrend, Rolf Disselnkötter, Pawel Rzeszucinski, James Ottewill
  • Publication number: 20170284873
    Abstract: 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: Application
    Filed: March 30, 2017
    Publication date: October 5, 2017
    Inventors: Rolf Disselnkoetter, Joerg Gebhardt, Stephan Wildermuth
  • Patent number: 9645174
    Abstract: 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: Grant
    Filed: August 26, 2013
    Date of Patent: May 9, 2017
    Assignee: ABB AG
    Inventors: Adrian Hozoi, Rolf Disselnkötter
  • Patent number: 9646748
    Abstract: 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: Grant
    Filed: August 23, 2013
    Date of Patent: May 9, 2017
    Assignee: ABB AG
    Inventors: Adrian Hozoi, Rolf Disselnkötter
  • Patent number: 9507006
    Abstract: 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: Grant
    Filed: October 13, 2014
    Date of Patent: November 29, 2016
    Assignee: ABB Schweiz AG
    Inventors: Joris Pascal, Rolf Disselnkötter, Franz Zurfluh, Bernhard Deck
  • Patent number: 9299484
    Abstract: 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: Grant
    Filed: August 26, 2013
    Date of Patent: March 29, 2016
    Assignee: ABB AG
    Inventors: Adrian Hozoi, Rolf Disselnkötter, Marek Pavlas
  • Publication number: 20150276823
    Abstract: 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: Application
    Filed: October 3, 2013
    Publication date: October 1, 2015
    Inventors: Pedro Rodriguez, Cajetan Pinto, Maciej Orman, Michal Orkisz, Ulf Ahrend, Rolf Disselnkötter, Pawel Rzeszucinski, James Ottewill
  • Publication number: 20150028852
    Abstract: 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: Application
    Filed: October 13, 2014
    Publication date: January 29, 2015
    Applicant: ABB TECHNOLOGY AG
    Inventors: Joris PASCAL, Yannick MARET, Jean-Baptiste KAMMERER, Rolf DISSELNKÖTTER
  • Publication number: 20150028850
    Abstract: 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: Application
    Filed: October 13, 2014
    Publication date: January 29, 2015
    Applicant: ABB TECHNOLOGY AG
    Inventors: Joris PASCAL, Rolf DISSELNKÖTTER, Franz ZURFLUH, Bernhard DECK
  • Publication number: 20140159744
    Abstract: 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: Application
    Filed: January 16, 2014
    Publication date: June 12, 2014
    Applicant: ABB Technology AG
    Inventors: Adrian HOZOI, Rolf Disselnkötter
  • Patent number: 8698485
    Abstract: 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: Grant
    Filed: April 20, 2012
    Date of Patent: April 15, 2014
    Assignee: ABB AG
    Inventors: Adrian Hozoi, Rolf Disselnkötter
  • Publication number: 20130342227
    Abstract: 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: Application
    Filed: August 26, 2013
    Publication date: December 26, 2013
    Applicant: ABB AG
    Inventors: Adrian HOZOI, Rolf DISSELNKÖTTER, Marek PAVLAS
  • Publication number: 20130342187
    Abstract: 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: Application
    Filed: August 26, 2013
    Publication date: December 26, 2013
    Applicant: ABB AG
    Inventors: Adrian HOZOI, Rolf DISSELNKÖTTER
  • Publication number: 20130335106
    Abstract: 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: Application
    Filed: August 23, 2013
    Publication date: December 19, 2013
    Applicant: ABB AG
    Inventors: Adrian HOZOI, Rolf Disselnkötter
  • Publication number: 20120268108
    Abstract: 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: Application
    Filed: April 20, 2012
    Publication date: October 25, 2012
    Applicant: ABB AG
    Inventors: Adrian HOZOI, Rolf Disselnkötter
  • Publication number: 20120268114
    Abstract: 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: Application
    Filed: April 19, 2012
    Publication date: October 25, 2012
    Applicant: ABB AG
    Inventors: Rolf DISSELNKÖTTER, Adrian Hozoi
  • Patent number: 7866219
    Abstract: 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: Grant
    Filed: August 21, 2007
    Date of Patent: January 11, 2011
    Assignee: ABB Patent GmbH
    Inventors: Frank Kassubek, Lothar Deppe, Rolf Disselnkötter, Steffen Keller, Jörg Gebhardt, René Friedrichs, Beat Kramer
  • Publication number: 20080047351
    Abstract: 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: Application
    Filed: August 21, 2007
    Publication date: February 28, 2008
    Applicant: ABB PATENT GMBH
    Inventors: Frank Kassubek, Lothar Deppe, Rolf Disselnkoetter, Steffen Keller, Jorg Gebhardt, Renee Friedrichs, Beat Kramer