Patents by Inventor Nils Lavesson
Nils Lavesson 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: 20240087791Abstract: An electric device includes a tank and a cable box connected to the tank, the tank and the cable box being filled with an insulating liquid electric connection system for connecting a power cable through the cable box to the tank and a current measuring device for measuring electric current in the electric connection system, wherein the current measuring device is located adjacent to a housing of the cable box.Type: ApplicationFiled: December 22, 2021Publication date: March 14, 2024Inventors: Jan Czyzewski, Tor Laneryd, Johan Dahlgren, Sebastian Seier, Nils Lavesson
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Patent number: 11923108Abstract: An insulator for electrically insulating an electrical conductor. The insulator includes a roll defining a central longitudinal through hole along a longitudinal axis of the insulator. The through hole is arranged for allowing an electrical conductor to pass there through. The insulator also includes at least one shed arranged on an outer surface of the roll. The shed includes a shed tip having an outer non-flat curvature defined by a plurality of different radii of curvature and including a most distal point of the shed. An end radius of curvature at the most distal point of the curvature is larger than a first radius of curvature at one side of the most distal point and a second radius of curvature at the other side of the most distal point.Type: GrantFiled: October 2, 2020Date of Patent: March 5, 2024Assignee: HITACHI ENERGY LTDInventors: Nils Lavesson, Olof Hjortstam
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Patent number: 11908602Abstract: Provided is a static electric induction arrangement including: a static electric induction device arranged in a static electric induction device tank; an accessory tank including at least one opening configured to receive an accessory therein; the static electric induction device tank and the accessory tank are intended to be filled with dielectric fluid and are connected via a fluid connection, an upper portion of a cross section of the fluid connection, is located at a first height, the arrangement comprises a heat exchanger connected to the device tank, the device tank includes an outlet that is arranged to lead the dielectric fluid to the heat exchanger and an inlet that is arranged to return the dielectric fluid from the heat exchanger.Type: GrantFiled: June 29, 2021Date of Patent: February 20, 2024Assignee: HITACHI ENERGY LTDInventors: Nils Lavesson, Tor Laneryd, Jan Czyzewski, Johan Dahlgren, Sebastian Seier
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Patent number: 11798711Abstract: A composite insulator includes an insulating elongated core, a protective layer surrounding the elongated core, the protective layer including an outer surface with a shed profile and an adhesive primer layer disposed between the elongated core and the protective layer for adhering the protective layer to the elongated core, the adhesive primer layer including a coupling agent and particles of a low resistivity material. The method for producing a composite insulator includes preparing a first solution including a solvent, a coupling agent and particles of a low resistivity material, applying the first solution on at least a part of an envelope surface of an insulating elongated core and thus forming one or more first adhesive primer layers and applying a protective layer onto the first adhesive primer layer on the elongated core, wherein the protective layer includes an outer surface with a shed profile.Type: GrantFiled: July 2, 2019Date of Patent: October 24, 2023Assignee: HITACHI ENERGY SWITZERLAND AGInventors: Olof Hjortstam, Henrik Lofas, Henrik Hillborg, Nils Lavesson, Magnus Svanberg
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Publication number: 20230197325Abstract: Provided is a static electric induction arrangement including: a static electric induction device arranged in a static electric induction device tank; an accessory tank including at least one opening configured to receive an accessory therein; the static electric induction device tank and the accessory tank are intended to be filled with dielectric fluid and are connected via a fluid connection, an upper portion of a cross section of the fluid connection, is located at a first height, the arrangement comprises a heat exchanger connected to the device tank, the device tank includes an outlet that is arranged to lead the dielectric fluid to the heat exchanger and an inlet that is arranged to return the dielectric fluid from the heat exchanger.Type: ApplicationFiled: June 29, 2021Publication date: June 22, 2023Applicant: Hitachi Energy Switzerland AGInventors: Nils LAVESSON, Tor LANERYD, Jan CZYZEWSKI, Johan DAHLGREN, Sebastian SEIER
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Publication number: 20220328215Abstract: An insulator for electrically insulating an electrical conductor. The insulator includes a roll defining a central longitudinal through hole along a longitudinal axis of the insulator. The through hole is arranged for allowing an electrical conductor to pass there through. The insulator also includes at least one shed arranged on an outer surface of the roll. The shed includes a shed tip having an outer non-flat curvature defined by a plurality of different radii of curvature and including a most distal point of the shed. An end radius of curvature at the most distal point of the curvature is larger than a first radius of curvature at one side of the most distal point and a second radius of curvature at the other side of the most distal point.Type: ApplicationFiled: October 2, 2020Publication date: October 13, 2022Inventors: Nils Lavesson, Olof Hjortstam
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Publication number: 20210272723Abstract: A composite insulator includes an insulating elongated core, a protective layer surrounding the elongated core, the protective layer including an outer surface with a shed profile and an adhesive primer layer disposed between the elongated core and the protective layer for adhering the protective layer to the elongated core, the adhesive primer layer including a coupling agent and particles of a low resistivity material. The method for producing a composite insulator includes preparing a first solution including a solvent, a coupling agent and particles of a low resistivity material, applying the first solution on at least a part of an envelope surface of an insulating elongated core and thus forming one or more first adhesive primer layers and applying a protective layer onto the first adhesive primer layer on the elongated core, wherein the protective layer includes an outer surface with a shed profile.Type: ApplicationFiled: July 2, 2019Publication date: September 2, 2021Inventors: Olof Hjortstam, Henrik Lofas, Henrik Hillborg, Nils Lavesson, Magnus Svanberg
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Publication number: 20210225595Abstract: The present disclosure relates to a wound electrical component comprising a wound body comprising a plurality of wound layers of a web of an electrically insulating material around a longitudinal axis of the body. The wound body comprises a plurality of electrically conducting layers of an electrically conducting material, each printed onto a respective separate area of the web in the wound body. An edge zone of at least one of the plurality of electrically conducting layers is connected to a printed high permittivity layer of a high permittivity material along said edge zone such that at least a part of the high permittivity layer extends, printed on the web, beyond the edge zone.Type: ApplicationFiled: May 29, 2019Publication date: July 22, 2021Inventors: Cecilia Forssen, Harald Martini, Joachim Schiessling, Nils Lavesson, Peter Dyreklev, Mats Sandberg
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Patent number: 11045998Abstract: A method for producing an electrical power device having an insulator. The method includes, by means of additive manufacturing, applying a polymeric insulating material forming part of the device. The method also includes, in a subsequent consolidation step, subjecting the insulator to elevated temperature and pressure during a predetermined time period to consolidate the insulator.Type: GrantFiled: February 6, 2018Date of Patent: June 29, 2021Assignee: ABB Power Grids Switzerland AGInventors: Harald Martini, Joachim Schiessling, Nils Lavesson, Cecilia Forssen, Håkan Faleke, Julia Viertel, Lukasz Matysiak, Jan Czyzewski, Roger Hedlund, Jens Rocks
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Patent number: 10937597Abstract: A high voltage capacitive device having: a non-impregnatable film having a plurality of physically separated regions each defined by a conductive coating provided on the non-impregnatable film, wherein the non-impregnatable film is wound in a plurality of turns to form a plurality of layers, wherein the regions are arranged in overlapping layers in the radial direction, wherein the non-impregnatable film forms a dielectric between adjacent layers of the regions, and wherein the conductive coating of at least some of the regions is provided with a plurality of first radial openings extending through the conductive coating to the non-impregnatable film, which delimits a radial extension of each first radial opening.Type: GrantFiled: June 19, 2018Date of Patent: March 2, 2021Assignee: ABB Schweiz AGInventors: Cecilia Forssen, Francisco Penayo, Joachim Schiessling, Nils Lavesson, Peter Sjöberg, Roger Hedlund, Ylva Granbom, Peter Dyreklev, Staffan Nordlinder
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Publication number: 20200126732Abstract: A high voltage capacitive device having: a non-impregnatable film having a plurality of physically separated regions each defined by a conductive coating provided on the non-impregnatable film, wherein the non-impregnatable film is wound in a plurality of turns to form a plurality of layers, wherein the regions are arranged in overlapping layers in the radial direction, wherein the non-impregnatable film forms a dielectric between adjacent layers of the regions, and wherein the conductive coating of at least some of the regions is provided with a plurality of first radial openings extending through the conductive coating to the non-impregnatable film, which delimits a radial extension of each first radial opening.Type: ApplicationFiled: June 19, 2018Publication date: April 23, 2020Applicant: ABB Schweiz AGInventors: Cecilia Forssen, Francisco Penayo, Joachim Schiessling, Nils Lavesson, Peter Sjöberg, Roger Hedlund, Ylva Granbom, Peter Dyreklev, Staffan Nordlinder
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Publication number: 20190389126Abstract: A method for producing an electrical power device having an insulator. The method includes, by means of additive manufacturing, applying a polymeric insulating material forming part of the device. The method also includes, in a subsequent consolidation step, subjecting the insulator to elevated temperature and pressure during a predetermined time period to consolidate the insulator.Type: ApplicationFiled: February 6, 2018Publication date: December 26, 2019Inventors: Harald Martini, Joachim Schiessling, Nils Lavesson, Cecilia Forssen, Håkan Faleke, Julia Viertel, Lukasz Matysiak, Jan Czyzewski, Roger Hedlund, Jens Rocks
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Patent number: 9870847Abstract: The method relates to an electric device comprising at least two electrodes which are separated by dielectric part. At least one of said electrodes is arranged to be at a floating potential. The dielectric part comprises at least one turn of at least one non-impregnatable electrically insulating film between two neighboring electrodes. The electrodes are bonded to adjacent turns of non-impregnatable insulating film, and adjacent turns of non-impregnatable insulating film, if any, are bonded to each other, so that the turns of non-impregnatable insulating film and the electrodes form a solid body. The invention further relates to a method of manufacturing an electric device, where bonding of at least one turn is performed upon forming of said turn, so that the bonding of said turn to the turn/electrode underneath will commence before said turn has been completely covered by the next turn.Type: GrantFiled: December 5, 2013Date of Patent: January 16, 2018Assignee: ABB Schweiz AGInventors: Roger Hedlund, Peter Sjöberg, Håkan Faleke, Nils Lavesson, Harald Martini, Joachim Schiessling
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Publication number: 20150325341Abstract: The method relates to an electric device comprising at least two electrodes which are separated by dielectric part. At least one of said electrodes is arranged to be at a floating potential. The dielectric part comprises at least one turn of at least one non-impregnatable electrically insulating film between two neighbouring electrodes. The electrodes are bonded to adjacent turns of non-impregnatable insulating film, and adjacent turns of non-impregnatable insulating film, if any, are bonded to each other, so that the turns of non-impregnatable insulating film and the electrodes form a solid body. The invention further relates to a method of manufacturing an electric device, where bonding of at least one turn is performed upon forming of said turn, so that the bonding of said turn to the turn/electrode underneath will commence before said turn has been completely covered by the next turn.Type: ApplicationFiled: December 5, 2013Publication date: November 12, 2015Inventors: Roger Hedlund, Peter Sjöberg, Håkan Faleke, Nils Lavesson, Harald Martini, Joachim Schiessling