Patents by Inventor Andrej Krivda
Andrej Krivda 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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Publication number: 20230341453Abstract: A detection system for detecting an electrical discharge in an electrical apparatus includes a first sensing device that senses an acoustic wave and an electromagnetic wave and generates a first combined signal. A signal processing device processes the first combined signal and determines the occurrence and properties of an electrical discharge.Type: ApplicationFiled: June 30, 2023Publication date: October 26, 2023Applicant: ABB Schweiz AGInventors: Kai Hencken, Holger Kaul, Jörg Gebhardt, Yannick Maret, Andrej Krivda
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Patent number: 11726131Abstract: The present disclosure provides a detection system that includes a first sensing device configured for sensing an acoustic wave and an electromagnetic wave and generating a first combined signal and a signal processing device configured to determine the occurrence and properties of an electrical discharge.Type: GrantFiled: July 20, 2021Date of Patent: August 15, 2023Assignee: ABB Schweiz AGInventors: Kai Hencken, Holger Kaul, Jörg Gebhardt, Yannick Maret, Andrej Krivda
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Patent number: 11609259Abstract: The present disclosure provides a method for detecting an electrical discharge in an electrical apparatus. The method includes sensing an electromagnetic wave using an electrical sensor and generating an electric signal for a predetermined time period, sensing an acoustic wave using an acoustic sensor and generating an acoustic signal for the predetermined time period. The acoustic sensor is associated with at least one compartment of the electrical apparatus. Electrical data is generated based on a quasi-periodic characteristic of electric peak sequences of the electrical signal. Acoustic data is generated based on a quasi-periodic characteristic of acoustic peak sequences of the acoustic signal, wherein the electrical data is combined with the acoustic data to provide an operation status of the at least one compartment.Type: GrantFiled: June 30, 2021Date of Patent: March 21, 2023Assignee: ABB Schweiz AGInventors: Kai Hencken, Yannick Maret, Jörg Gebhardt, Holger Kaul, Jörg Lehmann, Andrej Krivda
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Publication number: 20220018887Abstract: The present disclosure provides a detection system that includes a first sensing device configured for sensing an acoustic wave and an electromagnetic wave and generating a first combined signal and a signal processing device configured to determine the occurrence and properties of an electrical discharge.Type: ApplicationFiled: July 20, 2021Publication date: January 20, 2022Applicant: ABB Schweiz AGInventors: Kai Hencken, Holger Kaul, Jörg Gebhardt, Yannick Maret, Andrej Krivda
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Publication number: 20210405106Abstract: The present disclosure provides a method for detecting an electrical discharge in an electrical apparatus. The method includes sensing an electromagnetic wave using an electrical sensor and generating an electric signal for a predetermined time period, sensing an acoustic wave using an acoustic sensor and generating an acoustic signal for the predetermined time period. The acoustic sensor is associated with at least one compartment of the electrical apparatus. Electrical data is generated based on a quasi-periodic characteristic of electric peak sequences of the electrical signal. Acoustic data is generated based on a quasi-periodic characteristic of acoustic peak sequences of the acoustic signal, wherein the electrical data is combined with the acoustic data to provide an operation status of the at least one compartment.Type: ApplicationFiled: June 30, 2021Publication date: December 30, 2021Applicant: ABB Schweiz AGInventors: Kai Hencken, Yannick Maret, Jörg Gebhardt, Holger Kaul, Jörg Lehmann, Andrej Krivda
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Patent number: 11070036Abstract: A multi-phase busbar for conducting electric energy includes: a base layer of an insulating material; a first conducting layer of a sheet metal; a first insulating layer of an insulating material arranged on the first conducting layer; a second conducting layer of a sheet metal arranged on the insulating layer; and a second layer of an electrically insulating material which is arranged on the second conducting layer. The first and/or second insulating layers include spacers, each spacer including a layer of a rigid insulating material. At least one of the spacers is glued to an electrically insulating coating of the first and/or second conducting layer, and/or at least one of the spacers is glued to an electrically conductive surface of an uncoated first and/or second conducting layer by an adhesive.Type: GrantFiled: June 18, 2019Date of Patent: July 20, 2021Assignee: ABB SCHWEIZ AGInventors: Rudi Velthuis, Andrej Krivda, Jens Rocks
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Patent number: 10790643Abstract: A multi-phase busbar for conducting electric energy includes: an insulating base layer made of an insulating material; a first conducting layer made of a sheet metal arranged on and adhesively bonded to the base layer; a first connecting pin mounted to the first conducting layer which extends in a direction with respect to the first conducting layer; a first insulating layer arranged on and adhesively bonded to the first conducting layer; a second conducting layer made of a sheet metal arranged on and adhesively bonded to the first insulating layer, the second conducting layer including a second connecting pin which extends in a direction parallel to the first connecting pin; and a second insulating layer arranged on and adhesively bonded to the second conducting layer. The second conducting layer and the first and second insulating layer each include at least one pinhole through which the first connecting pin projects.Type: GrantFiled: June 18, 2019Date of Patent: September 29, 2020Assignee: ABB SCHWEIZ AGInventors: Rudi Velthuis, Andrej Krivda
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Patent number: 10662323Abstract: The present invention relates to a polymer composition suitable for the manufacture of an electrical insulation layer for cables having superior mechanical and electrical properties and being environmentally friendly, to a cable comprising said polymer composition as well as to the use of the polymer composition as an electrical insulation layer in cables.Type: GrantFiled: August 12, 2013Date of Patent: May 26, 2020Assignee: NKT HV CABLES ABInventors: Chau-Hon Ho, Cherif Ghoul, Gustavo Dominguez, Anneli Jedenmalm, Andreas Friberg, Andrej Krivda, Lei Xie, Andreas Farkas
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Patent number: 10559399Abstract: A multi-phase busbar can include a first conducting layer, a first conducting pin, a first insulating layer, and a second conducting layer. The first conducting layer can include a sheet metal coated with an electrically insulating material. The first conducting pin can be mounted to the first conducting layer. The first conducting pin can extend in a direction perpendicular to the first conducting layer. The first insulating layer of a rigid insulating material can be arranged on the first conducting layer. The first insulating layer can define an opening through which the first conducting pin projects. The second conducting layer can include a sheet metal coated with an electrically insulating material, the second conducting layer comprising a first pinhole through which the first conducting pin projects and a second conducting pin which extends in a direction parallel to the first conducting pin.Type: GrantFiled: June 19, 2019Date of Patent: February 11, 2020Assignee: ABB Schweiz AGInventors: Rudi Velthuis, Andrej Krivda, Jens Rocks
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Publication number: 20190304621Abstract: A multi-phase busbar can include a first conducting layer, a first conducting pin, a first insulating layer, and a second conducting layer. The first conducting layer can include a sheet metal coated with an electrically insulating material. The first conducting pin can be mounted to the first conducting layer. The first conducting pin can extend in a direction perpendicular to the first conducting layer. The first insulating layer of a rigid insulating material can be arranged on the first conducting layer. The first insulating layer can define an opening through which the first conducting pin projects. The second conducting layer can include a sheet metal coated with an electrically insulating material, the second conducting layer comprising a first pinhole through which the first conducting pin projects and a second conducting pin which extends in a direction parallel to the first conducting pin.Type: ApplicationFiled: June 19, 2019Publication date: October 3, 2019Inventors: Rudi Velthuis, Andrej Krivda, Jens Rocks
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Publication number: 20190305447Abstract: A multi-phase busbar for conducting electric energy includes: an insulating base layer made of an insulating material; a first conducting layer made of a sheet metal arranged on and adhesively bonded to the base layer; a first connecting pin mounted to the first conducting layer which extends in a direction with respect to the first conducting layer; a first insulating layer arranged on and adhesively bonded to the first conducting layer; a second conducting layer made of a sheet metal arranged on and adhesively bonded to the first insulating layer, the second conducting layer including a second connecting pin which extends in a direction parallel to the first connecting pin; and a second insulating layer arranged on and adhesively bonded to the second conducting layer. The second conducting layer and the first and second insulating layer each include at least one pinhole through which the first connecting pin projects.Type: ApplicationFiled: June 18, 2019Publication date: October 3, 2019Inventors: Rudi Velthuis, Andrej Krivda
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Publication number: 20190305526Abstract: A multi-phase busbar for conducting electric energy includes: a base layer of an insulating material; a first conducting layer of a sheet metal; a first insulating layer of an insulating material arranged on the first conducting layer; a second conducting layer of a sheet metal arranged on the insulating layer; and a second layer of an electrically insulating material which is arranged on the second conducting layer. The first and/or second insulating layers include spacers, each spacer including a layer of a rigid insulating material. At least one of the spacers is glued to an electrically insulating coating of the first and/or second conducting layer, and/or at least one of the spacers is glued to an electrically conductive surface of an uncoated first and/or second conducting layer by an adhesive.Type: ApplicationFiled: June 18, 2019Publication date: October 3, 2019Inventors: Rudi Velthuis, Andrej Krivda, Jens Rocks
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Publication number: 20170194826Abstract: It is proposed a wound conductor arrangement for an electrical machine: the wound conductor includes ma wound conductor comprising an electrically conductive material having an electrical conductivity value, and an insulation layer being at least partially provided around the wound conductor by a shrinkable tube comprising insulating material. The wound conductor arrangement further includes an intermediate layer provided between the wound conductor and the insulation layer. The intermediate layer has a conductivity value less than the conductivity value of the wound conductor. Further, an electric machine is proposed including the wound conductor arrangement. A method is described for insulating a wound conductor for an electrical machine.Type: ApplicationFiled: March 17, 2017Publication date: July 6, 2017Inventors: Andrej Krivda, Chau-Hon Ho, Cherif Ghoul, Jan Van-Loon, Lei Xie, Spiros Tzavalas
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Publication number: 20160194489Abstract: The present invention relates to a polymer composition suitable for the manufacture of an electrical insulation layer for cables having superior mechanical and electrical properties and being environmentally friendly, to a cable comprising said polymer composition as well as to the use of the polymer composition as an electrical insulation layer in cables.Type: ApplicationFiled: August 12, 2013Publication date: July 7, 2016Applicant: ABB TECHNOLOGY LTDInventors: Chau-Hon HO, Cherif GHOUL, Gustavo DOMINGUEZ, Anneli JEDENMALM, Andreas FRIBERG, Andrej KRIVDA, Lei XIE, Andreas FARKAS
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Patent number: 8545977Abstract: Polymer concrete electrical insulation including a hardened epoxy resin composition filled with an electrically non-conductive inorganic filler compositions. The polymer concrete electrical insulation system optionally may contain additives. The epoxy resin composition is based on a cycloaliphatic epoxy resin. The inorganic filler composition can be present within the range of about 76% by weight to about 86% by weight, calculated to the total weight of the polymer concrete electrical insulation system. The inorganic filler composition includes a uniform mixture of (i) an inorganic filler with an average grain size within the range of 1 micron (?m) to 100 micron (?m) [component c(i)], and (ii) an inorganic filler with an average grain size within the range of 0.1 mm (100 micron) to 2 mm [component c(ii)].Type: GrantFiled: April 8, 2010Date of Patent: October 1, 2013Assignee: ABB Research Ltd.Inventors: Stephen Clifford, Faustine Soyeux, Andrej Krivda, Vincent Tilliette, Nikolaus Zant, Bandeep Singh, Felix Greuter, Leopold Ritzer
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Publication number: 20130203897Abstract: Electrical insulation system with improved electrical breakdown strength, including a hardened polymer component having incorporated therein a filler material and a nano-scale sized filler material. The hardened polymer component is selected from epoxy resin compositions, polyesters, polyamides, polybutylene terephthalate, polyurethanes and polydicyclo-pentadiene. The filler material has an average particle size within the range of 1 ?m-500 ?m, and is present in a quantity within the range of 40%-65% by weight, calculated to the total weight of the insulation system. The nano-scale sized filler material is a pretreated nano-scale sized filler material, having been produced by a sol-gel process. The nano-scale sized filler material is present within the electrical insulation system in an amount of about 1%-20% by weight, calculated to the weight of the filler material present in the electrical insulation system.Type: ApplicationFiled: August 3, 2012Publication date: August 8, 2013Applicant: ABB RESEARCH LTDInventors: Xavier KORNMANN, Lars E. Schmidt, Andrej Krivda, Felix Greuter, Martin Carlen
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Patent number: 8242786Abstract: The disclosure relates to a method for partial discharge testing of an insulation component, wherein at least one X-ray pulse is applied to the insulation component, an AC voltage is applied to the insulation component and the partial discharge induced by the at least one X-ray pulse is measured, wherein the dose rate of the at least one X-ray pulse is at least about 10?2 Gray/s. The disclosure relates further to a system for partial discharge testing of an insulation component which includes a flash X-ray source for generating at least one X-ray pulse, an AC voltage source, a voltage sensor, a partial discharge sensor and a partial discharge detection device for evaluating the measured partial discharge.Type: GrantFiled: August 19, 2009Date of Patent: August 14, 2012Assignee: ABB Research LtdInventors: Henning Fuhrmann, Andrej Krivda
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Patent number: 7851525Abstract: A high temperature vulcanized silicone rubber is disclosed and includes a high temperature vulcanized silicone rubber as a silicone base and melamine cyanurate as a filler and at least one inorganic filler which is different from melamine cyanurate, and optionally further additives. A total filler content can be within a range of 40 parts (by weight) to 230 parts (by weight) per 100 parts (by weight) of silicone base; wherein (i) the melamine cyanurate is present within a range of 2 parts (by weight) to 40 parts (by weight) per 100 parts (by weight) of silicone base; and (ii) the at least one inorganic filler is an electrical insulator.Type: GrantFiled: January 4, 2010Date of Patent: December 14, 2010Assignee: ABB Research LtdInventors: Lars E. Schmidt, Alessandro Mattozzi, Andrej Krivda, Henrik Hillborg, Pitor Saj, Xavier Kornmann
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Publication number: 20100227951Abstract: Polymer concrete electrical insulation including a hardened epoxy resin composition filled with an electrically non-conductive inorganic filler compositions. The polymer concrete electrical insulation system optionally may contain additives. The epoxy resin composition is based on a cycloaliphatic epoxy resin. The inorganic filler composition can be present within the range of about 76% by weight to about 86% by weight, calculated to the total weight of the polymer concrete electrical insulation system. The inorganic filler composition includes a uniform mixture of (i) an inorganic filler with an average grain size within the range of 1 micron (?m) to 100 micron (?m) [component c(i)], and (ii) an inorganic filler with an average grain size within the range of 0.1 mm (100 micron) to 2 mm [component c(ii)].Type: ApplicationFiled: April 8, 2010Publication date: September 9, 2010Applicant: ABB Research Ltd.Inventors: Stephen CLIFFORD, Faustine Soyeux, Andrej Krivda, Vincent Tilliette, Nikolaus Zant, Bandeep Singh, Felix Greuter, Leopold Ritzer
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Publication number: 20100227158Abstract: Surface modified electrical insulation system including a hardened or cured synthetic polymer composition including at least one filler, wherein the surface of said synthetic polymer composition is modified by being coated with a thin coating. The thin coating is applied by a plasma enhanced chemical vapor deposition (PECVD) with a thickness within the range of about 50 nanometer to about 50 ?m; and/or a by a sol-gel technique with a thickness within the range of about 0.5 micron to about 1 mm. The thin coat is an electrically non-conductive polymeric material having a melting point which is distinctly higher than the melting point or degradation temperature of the synthetic filler containing polymer composition.Type: ApplicationFiled: April 7, 2010Publication date: September 9, 2010Applicant: ABB Research Ltd.Inventors: Stephen CLIFFORD, Bandeep Singh, Andrej Krivda, Lars E. Schmidt, Felix Greuter, Veronika Schmid