Patents by Inventor Peter Sjoberg
Peter Sjoberg 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: 10483042Abstract: A method of manufacturing a capacitive electrical device is disclosed. The method includes a) bonding a first electrical insulation film with a second electrical insulation film to obtain a single electrical insulation film that has a larger surface area than any of the first electrical insulation film and the second electrical insulation film has alone, b) providing a conductive layer onto the single electrical insulation film, and c) winding the single electrical insulation film and the conductive layer around a shaft to obtain a layer of the single electrical insulation film and a layer of the conductive layer wound onto the shaft, thereby forming the capacitive electrical device.Type: GrantFiled: June 22, 2016Date of Patent: November 19, 2019Assignee: ABB Schweiz AGInventors: Peter Sjöberg, Roger Hedlund, Ylva Granbom
-
Publication number: 20190198241Abstract: The present invention refers to HV apparatus, in particular a HV dry current transformer, insulated with an insulating gel, or a voltage transformer, insulated with an insulating gel. The dry HV current transformer comprises at least two electrically conductive elements i.e. a head transformer cover, a head housing base, a core casing and a primary conductor. In the dry HV current transformer at least one of the electrically conductive elements has a coating made of solid insulating material separating the surface of the conductive elements from the insulating gel and adapted for limiting the electron emission from the conductive elements into the insulating gel. The voltage transformer comprises a bottom external housing, a bottom support flange, a core.Type: ApplicationFiled: October 25, 2018Publication date: June 27, 2019Inventors: Jedrzej Banaszczyk, Jan Czyzewski, Bartlomiej Adamczyk, Lukasz Bachorz, Wojciech Wysocki, Marcin Tarnowski, Roger Hedlung, Peter Sjoberg, Jan Ostlund
-
Patent number: 10210969Abstract: An electrical bushing including an electrically insulating shell having a central longitudinal through hole and a first longitudinal end configured to be at a top of the bushing and a second longitudinal end configured to be at a bottom of the bushing. The bushing is configured for accommodating an electrical conductor positioned through the central longitudinal through hole of the shell. The shell includes fastening means for fastening the bushing to a wall of an electrical apparatus, through which wall the bushing is configured for allowing the electrical conductor to pass. The shell is configured for sealingly containing an electrically insulating liquid in the bushing, allowing the bushing to be liquid-filled. The shell is molded as a single piece from an electrically insulating polymeric material.Type: GrantFiled: May 19, 2016Date of Patent: February 19, 2019Assignee: ABB Schweiz AGInventors: Peter Sjöberg, Robert Floresjö, Roger Hedlund, Simon Lindgren, Ylva Granbom, Christian Söderlund
-
Publication number: 20180197683Abstract: A method of manufacturing a capacitive electrical device is disclosed. The method includes a) bonding a first electrical insulation film with a second electrical insulation film to obtain a single electrical insulation film that has a larger surface area than any of the first electrical insulation film and the second electrical insulation film has alone, b) providing a conductive layer onto the single electrical insulation film, and c) winding the single electrical insulation film and the conductive layer around a shaft to obtain a layer of the single electrical insulation film and a layer of the conductive layer wound onto the shaft, thereby forming the capacitive electrical device.Type: ApplicationFiled: June 22, 2016Publication date: July 12, 2018Inventors: Peter Sjöberg, Roger Hedlund, Ylva Granbom
-
Publication number: 20180102205Abstract: An electrical bushing including an electrically insulating shell having a central longitudinal through hole and a first longitudinal end configured to be at a top of the bushing and a second longitudinal end configured to be at a bottom of the bushing. The bushing is configured for accommodating an electrical conductor positioned through the central longitudinal through hole of the shell. The shell includes fastening means for fastening the bushing to a wall of an electrical apparatus, through which wall the bushing is configured for allowing the electrical conductor to pass. The shell is configured forsealingly containing an electrically insulating liquid in the bushing, allowing the bushing to be liquid-filled. The shell is moulded as a single piece from an electrically insulating polymeric material.Type: ApplicationFiled: May 19, 2016Publication date: April 12, 2018Applicant: ABB Schweiz AGInventors: Peter Sjöberg, Robert Floresjö, Roger Hedlund, Simon Lindgren, Ylva Granbom, Christian Söderlund
-
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
-
Patent number: 9799439Abstract: An electrical power component, such as a bushing. The power component includes a housing, a condenser core arranged in the housing and including an electrical insulation, a space formed between the condenser core and the housing, an expansion vessel positioned adjacent and in open communication with the space between the condenser core and the housing, and an electrically insulating fluid, such as oil, contained in the space between the condenser core and the. The power component further includes one or more filler elements having a higher density and lower thermal expansion coefficient than the fluid, and the one or more filler elements are movably arranged in the expansion vessel.Type: GrantFiled: November 23, 2015Date of Patent: October 24, 2017Assignee: ABB Schweiz AGInventors: Peter Sjöberg, Robert Floresjö, Simon Lindgren, Thomas Eriksson, Anders Östlund
-
Publication number: 20160148744Abstract: An electrical power component, such as a bushing. The power component includes a housing, a condenser core arranged in the housing and including an electrical insulation, a space formed between the condenser core and the housing, an expansion vessel positioned adjacent and in open communication with the space between the condenser core and the housing, and an electrically insulating fluid, such as oil, contained in the space between the condenser core and the. The power component further includes one or more filler elements having a higher density and lower thermal expansion coefficient than the fluid, and the one or more filler elements are movably arranged in the expansion vessel.Type: ApplicationFiled: November 23, 2015Publication date: May 26, 2016Inventors: Peter Sjöberg, Robert Floresjö, Simon Lindgren, Thomas Eriksson, Anders Östlund
-
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
-
Patent number: 8809686Abstract: An electrical bushing for providing electrical insulation of a conductor extending through the bushing is disclosed. The bushing includes: one conductive foil concentrically arranged around the conductor location; and one FGM part, made from a field grading material and partly arranged in the extension of part of a foil edge of a conductive foil. The FGM part and the conductive foil, in the extension of which the FGM part is arranged, are in electrical contact.Type: GrantFiled: October 5, 2012Date of Patent: August 19, 2014Assignee: ABB Research Ltd.Inventors: Jan-Ake Borjesson, Goran Eriksson, Sari Laihonen, Manoj Pradhan, Peter Sjoberg, Mikael Unge
-
Patent number: 8748757Abstract: A bushing including a bottom contact, and a tubular conductor, having a lower part having an end in electrical and mechanical contact with the bottom contact, and a draw rod arrangement, inside the conductor, arranged to exert sufficient contact pressure between the bottom contact and the conductor, and the draw rod arrangement includes a member in mechanical contact with the conductor and draw rod having a second end, fixedly connected to the bottom contact, and a first end in connection to the member and clamping means, the clamping means is adapted to apply a force, urging the member in the direction of the bottom contact to generate sufficient contact pressure between the bottom contact and the conductor. The member of the draw rod arrangement is arranged to apply the force to the lower part of the conductor.Type: GrantFiled: July 26, 2013Date of Patent: June 10, 2014Assignee: ABB Technology Ltd.Inventors: Thomas Eriksson, Peter Sjoberg
-
Patent number: 8669469Abstract: A high voltage bushing including an electrical conductor configured to be electrically connected to a high voltage device and configured to be connected to an external fluid cooling system, and an insulating body surrounding the electrical conductor. A method includes cooling the high voltage bushing by connecting the electrical conductor to an external fluid cooling system.Type: GrantFiled: December 22, 2006Date of Patent: March 11, 2014Assignee: ABB Technology Ltd.Inventors: Urban Aström, Dan Gustavsson, Fredrik Petrisi, Peter Sjöberg, Lars Svedjehed
-
Publication number: 20130306368Abstract: A bushing including a bottom contact, and a tubular conductor, having a lower part having an end in electrical and mechanical contact with the bottom contact, and a draw rod arrangement, inside the conductor, arranged to exert sufficient contact pressure between the bottom contact and the conductor, and the draw rod arrangement includes a member in mechanical contact with the conductor and draw rod having a second end, fixedly connected to the bottom contact, and a first end in connection to the member and clamping means, the clamping means is adapted to apply a force, urging the member in the direction of the bottom contact to generate sufficient contact pressure between the bottom contact and the conductor. The member of the draw rod arrangement is arranged to apply the force to the lower part of the conductor.Type: ApplicationFiled: July 26, 2013Publication date: November 21, 2013Inventors: Thomas Eriksson, Peter Sjoberg
-
Publication number: 20130025911Abstract: An electrical bushing for providing electrical insulation of a conductor extending through the bushing is disclosed. The bushing includes: one conductive foil concentrically arranged around the conductor location; and one FGM part, made from a field grading material and partly arranged in the extension of part of a foil edge of a conductive foil. The FGM part and the conductive foil, in the extension of which the FGM part is arranged, are in electrical contact.Type: ApplicationFiled: October 5, 2012Publication date: January 31, 2013Inventors: Jan-Ake Borjesson, Goran Eriksson, Sari Laihonen, Manoj Pradhan, Peter Sjoberg, Mikael Unge
-
Patent number: 7939752Abstract: An elongated member including an outer sleeve-like rigid insulator shell surrounding a high voltage conductor extending in the longitudinal direction of the shell and a gap inside the shell next to an internal wall of the shell at least partially surrounding the conductor and filled with a medium including a material of with electrically insulating properties. The medium is formed by an electrically insulating material including hollow spaces at least partially filled with gas. The material is adapted to expand upon a temperature rise thereof by reversibly compressing the hollow spaces and reducing the volume thereof.Type: GrantFiled: April 10, 2007Date of Patent: May 10, 2011Assignee: ABB Technology Ltd.Inventors: Peter Sjöberg, Gerd A. Chalikiá, Roger Hedlund
-
Patent number: 7875803Abstract: A bushing for electrical current and/or voltage through a grounded plane. A substantially rotationally symmetrical insulating body surrounds a central electrical conductor. The bushing includes a sealing member for gas/liquid sealing between the conductor and the insulator body. The bushing includes a compressible sealing element, which forms a gas/liquid seal, integrated with the insulating body, between the conductor and the insulating body. A method of manufacturing a bushing.Type: GrantFiled: November 1, 2005Date of Patent: January 25, 2011Assignee: ABB Technology Ltd.Inventors: Peter Sjöberg, Robert Ståhl
-
Publication number: 20090173515Abstract: An elongated member including an outer sleeve-like rigid insulator shell surrounding a high voltage conductor extending in the longitudinal direction of the shell and a gap inside the shell next to an internal wall of the shell at least partially surrounding the conductor and filled with a medium including a material of with electrically insulating properties. The medium is formed by an electrically insulating material including hollow spaces at least partially filled with gas. The material is adapted to expand upon a temperature rise thereof by reversibly compressing the hollow spaces and reducing the volume thereof.Type: ApplicationFiled: April 10, 2007Publication date: July 9, 2009Applicant: ABB Technology Ltd.Inventors: Peter Sjoberg, Gerd A. Chalikia, Roger Hedlund
-
Publication number: 20090126965Abstract: A high voltage bushing including an electrical conductor configured to be electrically connected to a high voltage device and configured to be connected to an external fluid cooling system, and an insulating body surrounding the electrical conductor. A method includes cooling the high voltage bushing by connecting the electrical conductor to an external fluid cooling system.Type: ApplicationFiled: December 22, 2006Publication date: May 21, 2009Applicant: ABB Technology Ltd.Inventors: Urban Astrom, Dan Gustavsson, Fredrik Petrisi, Peter Sjoberg, Lars Svedjehed
-
Publication number: 20090032283Abstract: A bushing for electrical current and/or voltage through a grounded plane. A substantially rotationally symmetrical insulating body surrounds a central electrical conductor. The bushing includes a sealing member for gas/liquid sealing between the conductor and the insulator body. The bushing includes a compressible sealing element, which forms a gas /liquid seal, integrated with the insulating body, between the conductor and the insulating body. A method of manufacturing a bushing.Type: ApplicationFiled: November 1, 2005Publication date: February 5, 2009Inventors: Peter Sjoberg, Robert Stahl
-
Patent number: 6165325Abstract: A vacuum vessel for continuous or semicontinuous treatment of fatty oils in connection with deodorization includes spaces through which the oil which is to be treated is brought to pass. The vessel also contains U-tubes used to heat or cool the oil and perforated pipes arranged at the bottom of the vessel. Through these pipes stripping gas is led into the oil. The vacuum vessel is connected to a vacuum source. According to the invention the vessel has the form of a container with a mainly rectangular bottom with partitions parallel to a long side of the container. These partitions delimit channels connected in series through which the oil passes. The bottom of a first channel as seen in the direction of flow is arranged on a higher level than the second channel seen in the direction of flow such that the oil is forced to pass through the vessel by gravity. The vacuum vessel has a low height in relation to the length of its sides.Type: GrantFiled: March 4, 1997Date of Patent: December 26, 2000Assignee: Alfa Laval ABInventors: Peter Sjoberg, Anders M.A. Hillstrom