Patents by Inventor Sari Laihonen
Sari Laihonen 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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Patent number: 10284076Abstract: A converter module for power converter stations includes a first terminal for input/output of an electrical current to the converter module via a first connection line, a second terminal for output/input of the current from the converter module via a second connection line, and a by-pass switch connected between the first terminal and the second terminal. The converter module further includes a first switching module and a second switching module connected in series via a first node connected to either one of the first terminal and the second terminal and at least two capacitor units. The first switching module includes two switching devices and the second switching module is connected between the first node and a second node.Type: GrantFiled: February 12, 2016Date of Patent: May 7, 2019Assignee: ABB SCHWEIZ AGInventors: Nan Chen, Sari Laihonen, Ludvig De Laval, Erik Doré
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Publication number: 20190028020Abstract: A converter module for power converter stations includes a first terminal for input/output of an electrical current to the converter module via a first connection line, a second terminal for output/input of the current from the converter module via a second connection line, and a by-pass switch connected between the first terminal and the second terminal. The converter module further includes a first switching module and a second switching module connected in series via a first node connected to either one of the first terminal and the second terminal and at least two capacitor units. The first switching module includes two switching devices and the second switching module is connected between the first node and a second node.Type: ApplicationFiled: February 12, 2016Publication date: January 24, 2019Applicant: ABB SCHWEIZ AGInventors: Nan CHEN, Sari LAIHONEN, Ludvig DE LAVAL, Erik DORÉ
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Patent number: 10115522Abstract: A multi-layered dielectric polymer material, a capacitor comprising the multi-layered dielectric polymer material, a use of the multi-layered dielectric polymer material and a method for forming the multi-layered dielectric polymer material are disclosed. The multi-layered dielectric polymer material may comprise a plurality of dielectric layers wherein the plurality of dielectric layers may comprise an identical base material. The base material may be compound with agents for at least one of the plurality of dielectric layers. It may overcome compatible issues for convention multi-layered material. The dielectric polymer material may have increased dielectric strength and excellent thermal properties.Type: GrantFiled: May 26, 2016Date of Patent: October 30, 2018Assignee: ABB Schweiz AGInventors: Lejun Qi, Nan Li, Delun Meng, Sari Laihonen, Francois Delince
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Patent number: 9865393Abstract: A metallized film capacitor element includes a plurality of concentrically arranged cylindrical sub-elements, each sub-element including at least one metal coated dielectric film wound in a plurality of turns. The capacitor element further includes one or more thermally conductive sections provided between the sub-elements. Each of the thermally conductive sections includes a sheet wound at least one turn and having a higher thermal conductivity than the metal coated dielectric film of the sub-elements. A thermally conducting film is provided for improving the thermal conductivity of electrical power components. The thermally conducting film includes an electrically insulating film and thermally conductive and electrically insulating particles disposed on at least one side of the film.Type: GrantFiled: February 1, 2013Date of Patent: January 9, 2018Assignee: ABB SCHWEIZ AGInventors: Linnea Petersson, Christoph Schlegel, Sari Laihonen
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Publication number: 20160276105Abstract: A multi-layered dielectric polymer material, a capacitor comprising the multi-layered dielectric polymer material, a use of the multi-layered dielectric polymer material and a method for forming the multi-layered dielectric polymer material are disclosed. The multi-layered dielectric polymer material may comprise a plurality of dielectric layers wherein the plurality of dielectric layers may comprise an identical base material. The base material may be compound with agents for at least one of the plurality of dielectric layers. It may overcome compatible issues for convention multi-layered material. The dielectric polymer material may have increased dielectric strength and excellent thermal properties.Type: ApplicationFiled: May 26, 2016Publication date: September 22, 2016Inventors: Lejun Qi, Nan Li, Delun Meng, Sari Laihonen, Francois Delince
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Publication number: 20150318115Abstract: A metallized film capacitor element includes a plurality of concentrically arranged cylindrical sub-elements, each sub-element including at least one metal coated dielectric film wound in a plurality of turns. The capacitor element further includes one or more thermally conductive sections provided between the sub-elements. Each of the thermally conductive sections includes a sheet wound at least one turn and having a higher thermal conductivity than the metal coated dielectric film of the sub-elements. A thermally conducting film is provided for improving the thermal conductivity of electrical power components. The thermally conducting film includes an electrically insulating film and thermally conductive and electrically insulating particles disposed on at least one side of the film.Type: ApplicationFiled: February 1, 2013Publication date: November 5, 2015Applicant: ABB Technology LtdInventors: Linnea PETERSSON, Christoph SCHLEGEL, Sari LAIHONEN
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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
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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
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Publication number: 20070242413Abstract: A power capacitor including at least one capacitor element enclosed in a container, wherein the container is of a material which substantially includes a first polymer material. Further, the container is cylindrical and provided in its surface with creepage distance extending protrusions of a second polymer material. The protrusions are formed with respect to their thickness and radial length so as to cool the capacitor. In a method for manufacturing such a power capacitor, a substantially cylindrical container is made of a material which substantially includes a first polymer material. The container is provided on its envelope surface with creepage distance-extending protrusions of a second polymer material and the capacitor elements are encapsulated in the container.Type: ApplicationFiled: December 17, 2004Publication date: October 18, 2007Applicant: ABB Technology LtdInventors: Birger Drugge, Johan Mood, Kenneth Dowling, Sari Laihonen, Carl-Olof Olsson, Tommy Holmgren
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Patent number: 6807046Abstract: A power capacitor for high voltage including at least one capacitor element enclosed in a container, use of a gel in such a capacitor, and a method for manufacture of the capacitor. A space is formed between each capacitor element and the container. The power capacitor can handle problems concerning oil leakage in such a capacitor. In the power capacitor the space is filled up by a dielectric fluid including a gelling component. Because a gel is used instead of oil, the risk of oil leakage is eliminated.Type: GrantFiled: December 9, 2002Date of Patent: October 19, 2004Assignee: ABB ABInventors: Eva Reiner, Kenneth Dowling, Sari Laihonen
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Publication number: 20030133255Abstract: The present invention relates to a power capacitor for high voltage and comprises at least one capacitor element (2a-2d) enclosed in a container (1). A space is formed between each capacitor element (2a-2d) and the container (1). The object of the invention is to be able to handle problems concerning oil leakage in such a capacitor. According to the invention said space is filled up by a dielectric fluid (10) comprising a gelling component. Because a gel is used instead of oil, the risk of oil leakage is eliminated. The invention also relates to use of a gel in such a capacitor and to a method for manufacture of the invented capacitor.Type: ApplicationFiled: December 9, 2002Publication date: July 17, 2003Inventors: Eva Reiner, Kenneth Dowling, Sari Laihonen