Patents by Inventor Thomas Bisig
Thomas Bisig 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).
-
Patent number: 12063004Abstract: A method for monitoring the operation of a frequency converter (1), which is designed to drive an electric motor (2), wherein the method comprises the following steps: generating phase voltages (u1, u2, u3) for corresponding phase sections (2.1, 2.2, 2.3) of the electric motor (2), ascertaining a voltage rotating field, measuring occurring phase currents (i1, i2, i3), ascertaining a current rotating field depending on the measured phase currents (i1, i2, i3), calculating a phase difference between the voltage rotating field and the current rotating field and/or calculating a frequency difference between the frequency of the voltage rotating field and the frequency of the current rotating field, and determining a fault state when the phase difference exceeds a phase difference threshold value and/or when the frequency difference exceeds a frequency difference threshold value.Type: GrantFiled: November 26, 2019Date of Patent: August 13, 2024Assignee: Lenze SEInventors: Johannes Brandt, Torsten Wedemeyer, Thomas Bisig
-
Publication number: 20220247339Abstract: A method for monitoring the operation of a frequency converter (1), which is designed to drive an electric motor (2), wherein the method comprises the following steps: generating phase voltages (u1, u2, u3) for corresponding phase sections (2.1, 2.2, 2.3) of the electric motor (2), ascertaining a voltage rotating field, measuring occurring phase currents (i1, i2, i3), ascertaining a current rotating field depending on the measured phase currents (i1, i2, i3), calculating a phase difference between the voltage rotating field and the current rotating field and/or calculating a frequency difference between the frequency of the voltage rotating field and the frequency of the current rotating field, and determining a fault state when the phase difference exceeds a phase difference threshold value and/or when the frequency difference exceeds a frequency difference threshold value. pa (FIG.Type: ApplicationFiled: November 26, 2019Publication date: August 4, 2022Inventors: Johannes BRANDT, Torsten WEDEMEYER, Thomas BISIG
-
Patent number: 10734151Abstract: A transformer for switched-mode power supplies includes a magnetizable core having a winding axis, at least one primary winding, which is formed by a primary winding conductor which at least partly surrounds the winding axis of the core, and at least one secondary winding, which is formed by a secondary winding conductor. The secondary winding conductor surrounds the primary winding conductor. The secondary winding is formed in one layer, and a cross section of the secondary winding conductor is rectangular, in particular square.Type: GrantFiled: August 20, 2012Date of Patent: August 4, 2020Assignee: Schmidhauser AGInventors: Dirk Schekulin, Silvia Gross-Kaeufler, Chriss Haertsch, Thomas Bisig, Alex Itten, Piere Cavin
-
Patent number: 10699836Abstract: An inductor includes a magnetizable core with a winding axis and at least one winding. The winding is formed by a conductor which at least partly surrounds the winding axis of the core. The winding is formed in one layer and a cross section of the conductor is rectangular, in particular square.Type: GrantFiled: August 20, 2012Date of Patent: June 30, 2020Assignee: Schmidhauser AGInventors: Dirk Schekulin, Silvia Gross-Kaeufler, Chriss Haertsch, Thomas Bisig, Alex Itten, Piere Cavin
-
Patent number: 10389304Abstract: A system includes a number of frequency converters, wherein a respective frequency converter has a wired data interface and a frequency converter parameter memory. The system further includes a number of wireless local area network modules, wherein a respective WLAN module has a wired data interface. The data interface of the WLAN module can be coupled to the data interface of a frequency converter for the purpose of bidirectional data exchange, wherein the frequency converter parameter memory of a frequency converter is designed to store values of a number of frequency converter WLAN parameters.Type: GrantFiled: March 23, 2018Date of Patent: August 20, 2019Assignee: Schmidhauser AGInventors: Thomas Bisig, Thomas Lange, Siegfried Haas
-
Patent number: 10346264Abstract: A frequency converter control unit has: a serial control unit interface, a control unit clock pulse generator for generating a control unit clock pulse, and a control unit processor which is designed to define a control parameter depending on an actual value. A power unit has a data connection to the control unit and has several power semiconductors, a power unit clock pulse generator for generating an adjustable power unit clock pulse, a serial power unit interface, a clock pulse generator adjustment unit which has a signal connection to the power unit interface and which adjusts the power unit clock pulse depending on signals received by the power unit on the power unit interface, a power unit processor which controls the power semiconductors depending on the control parameter and the power unit clock pulse, and a sensor unit that determines the actual value. The control unit transmits the control parameter via the control unit interface to the power unit.Type: GrantFiled: December 17, 2015Date of Patent: July 9, 2019Assignee: Schmidhauser AGInventor: Thomas Bisig
-
Patent number: 10256736Abstract: A DC-DC converter includes a first half-bridge circuit, a second half-bridge circuit, at least one transformer having at least one primary winding and at least one secondary winding, wherein the first and second half-bridge circuits are designed to generate an AC voltage at the at least one primary winding, and a rectifier circuit having an output terminal. The output terminal includes a first output terminal pole and a second output terminal pole. The rectifier circuit includes at least one rectifier element. The rectifier circuit is designed to rectify a voltage present at the at least one secondary winding and to output it at the output terminal. The rectifier circuit includes a polarity reversal protection transistor, the collector-emitter path of which or the drain-source path of which is looped in between a terminal of the at least one rectifier element and the first or the second output terminal pole of the output terminal.Type: GrantFiled: October 23, 2013Date of Patent: April 9, 2019Assignee: Schmidhauser AGInventors: Dirk Schekulin, Silvia Gross, Chris Haertsch, Thomas Bisig, Alex Itten, Pierre Cavin
-
Publication number: 20180278212Abstract: A system includes a number of frequency converters, wherein a respective frequency converter has a wired data interface and a frequency converter parameter memory. The system further includes a number of wireless local area network modules, wherein a respective WLAN module has a wired data interface. The data interface of the WLAN module can be coupled to the data interface of a frequency converter for the purpose of bidirectional data exchange, wherein the frequency converter parameter memory of a frequency converter is designed to store values of a number of frequency converter WLAN parameters.Type: ApplicationFiled: March 23, 2018Publication date: September 27, 2018Inventors: Thomas BISIG, Thomas LANGE, Siegfried HAAS
-
Publication number: 20170357556Abstract: A frequency converter has a control unit. The control unit has: a serial control unit interface, a control unit clock pulse generator for generating a control unit clock pulse, wherein data are transmitted via the serial control unit interface depending on the control unit clock pulse, and a control unit processor which is designed to define at least one control parameter depending on at least one actual value.Type: ApplicationFiled: December 17, 2015Publication date: December 14, 2017Inventor: Thomas BISIG
-
Publication number: 20150280589Abstract: A DC-DC converter includes a first half-bridge circuit, a second half-bridge circuit, at least one transformer having at least one primary winding and at least one secondary winding, wherein the first and second half-bridge circuits are designed to generate an AC voltage at the at least one primary winding, and a rectifier circuit having an output terminal. The output terminal includes a first output terminal pole and a second output terminal pole. The rectifier circuit includes at least one rectifier element. The rectifier circuit is designed to rectify a voltage present at the at least one secondary winding and to output it at the output terminal. The rectifier circuit includes a polarity reversal protection transistor, the collector-emitter path of which or the drain-source path of which is looped in between a terminal of the at least one rectifier element and the first or the second output terminal pole of the output terminal.Type: ApplicationFiled: October 23, 2013Publication date: October 1, 2015Inventors: Dirk Schekulin, Silvia Gross, Chris Haertsch, Thomas Bisig, Alex Itten, Pierre Cavin
-
Publication number: 20140327505Abstract: An inductor includes a magnetizable core with a winding axis and at least one winding. The winding is formed by a conductor which at least partly surrounds the winding axis of the core. The winding is formed in one layer and a cross section of the conductor is rectangular, in particular square.Type: ApplicationFiled: August 20, 2012Publication date: November 6, 2014Applicant: Schmidhauser AGInventors: Dirk Schekulin, Silvia Gross-Kaeufler, Chriss Haertsch, Thomas Bisig, Alex Itten, Piere Cavin
-
Publication number: 20140300438Abstract: A transformer for switched-mode power supplies includes a magnetizable core having a winding axis, at least one primary winding, which is formed by a primary winding conductor which at least partly surrounds the winding axis of the core, and at least one secondary winding, which is formed by a secondary winding conductor. The secondary winding conductor surrounds the primary winding conductor. The secondary winding is formed in one layer, and a cross section of the secondary winding conductor is rectangular, in particular square.Type: ApplicationFiled: August 20, 2012Publication date: October 9, 2014Applicant: Schmidhauser AGInventors: Dirk Schekulin, Silvia Gross-Kaeufler, Chriss Haertsch, Thomas Bisig, Alex Itten, Piere Cavin
-
Publication number: 20070193378Abstract: The inventive sensor illuminates the powder layer (40) by means of sensing segments (30, 31, 32), said powder layer scattering the measuring beams. Flaws in the powder layer lead to increased reflection such that a reflected measuring beam is reflected into the segments (30, 31, 31). The reflected beams are guided to a control unit (21) by the fiber lines. Said control unit recognizes flaws according to fluctuations in the intensity of reflected beams and generates a corresponding control signal.Type: ApplicationFiled: September 16, 2004Publication date: August 23, 2007Inventors: Urs Feuz, Thomas Bisig