Patents by Inventor Kaj Olsen
Kaj Olsen 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: 11187209Abstract: Provided is a brush assembly for transferring lightning current between a first structure and a second structure, which brush assembly includes a holder realized for mounting to one of the two structures; a recess formed in the holder, which recess is shaped to accommodate a brush and to expose a first brush face; and a first displacement means arranged to move the first exposed brush face against a surface of the first structure; and wherein the recess is shaped to also expose a second brush face, and the brush assembly further includes a second displacement means arranged to move the second exposed brush face against a surface of the second structure. Further provided is a lightning protection circuit of a wind turbine; and a wind turbine.Type: GrantFiled: November 27, 2019Date of Patent: November 30, 2021Inventors: Claus Michaelsen, Kaj Olsen
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Publication number: 20200182226Abstract: Provided is a brush assembly for transferring lightning current between a first structure and a second structure, which brush assembly includes a holder realized for mounting to one of the two structures; a recess formed in the holder, which recess is shaped to accommodate a brush and to expose a first brush face; and a first displacement means arranged to move the first exposed brush face against a surface of the first structure; and wherein the recess is shaped to also expose a second brush face, and the brush assembly further includes a second displacement means arranged to move the second exposed brush face against a surface of the second structure. Further provided is a lightning protection circuit of a wind turbine; and a wind turbine.Type: ApplicationFiled: November 27, 2019Publication date: June 11, 2020Inventors: Claus Michaelsen, Kaj Olsen
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Patent number: 10024308Abstract: A method of guiding lightning to a lightning receptor of a rotor blade for a wind turbine, wherein the method includes the following steps: Generating a vortex of airflow by means of a vortex generator, the vortex generator being located at the surface of the rotor blade; attracting the lightning by the vortex; guiding the lightning to the lightning receptor is provided. Furthermore, the invention relates to a rotor blade for a wind turbine, wherein the rotor blade comprises a vortex generator for generating a vortex of airflow, the vortex generator being located at the surface of the rotor blade, and a lightning receptor for receiving an electrical current from the lightning. The vortex generator and the lightning receptor are arranged such with regard to each other that the lightning is guided to the lightning receptor by the vortex which is generated by the vortex generator.Type: GrantFiled: July 23, 2015Date of Patent: July 17, 2018Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Peder Bay Enevoldsen, Kaj Olsen, Karsten Schibsbye
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Patent number: 9768603Abstract: A lightning protection system for a tower of a wind turbine is provided. The tower includes a reinforced concrete tower wall in which a plurality of electrically conductive structural reinforcing elements are embedded during construction. The lightning protection system includes a plurality of the structural reinforcing elements connected in an electrically conductive manner with each other and with a ground terminal. Further, a method of incorporating such a lightning protection system in a reinforced concrete tower, and a wind turbine with such a lightning protection system is provided.Type: GrantFiled: January 15, 2010Date of Patent: September 19, 2017Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Martin Johan Smith Jensen, Bastian Lewke, Kaj Olsen
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Patent number: 9644614Abstract: A lightning protection system for a wind turbine with a tower, a nacelle, a blade hub and a blade attached to the blade hub is provided. The lightning protection system includes an inner conductor inside the blade, an outer conductor arranged outside the blade and in electrical communication with the inner conductor, a collecting conductor arranged at the front end of the nacelle and in electrical communication with the outer conductor and a down-conductor connected to ground and in electrical communication with the collecting conductor. The outer conductor and the collecting conductor have substantially a same distance to the rotational axis. Further, a wind turbine with such a lightning protection system is provided.Type: GrantFiled: March 16, 2016Date of Patent: May 9, 2017Assignee: SIEMENS AKTIENGESELLSCHAFTInventor: Kaj Olsen
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Publication number: 20160195068Abstract: A lightning protection system for a wind turbine with a tower, a nacelle, a blade hub and a blade attached to the blade hub is provided. The lightning protection system includes an inner conductor inside the blade, an outer conductor arranged outside the blade and in electrical communication with the inner conductor, a collecting conductor arranged at the front end of the nacelle and in electrical communication with the outer conductor and a down-conductor connected to ground and in electrical communication with the collecting conductor. The outer conductor and the collecting conductor have substantially a same distance to the rotational axis. Further, a wind turbine with such a lightning protection system is provided.Type: ApplicationFiled: March 16, 2016Publication date: July 7, 2016Inventor: Kaj Olsen
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Publication number: 20160138570Abstract: A method of guiding lightning to a lightning receptor of a rotor blade for a wind turbine, wherein the method includes the following steps: Generating a vortex of airflow by means of a vortex generator, the vortex generator being located at the surface of the rotor blade; attracting the lightning by the vortex; guiding the lightning to the lightning receptor is provided. Furthermore, the invention relates to a rotor blade for a wind turbine, wherein the rotor blade comprises a vortex generator for generating a vortex of airflow, the vortex generator being located at the surface of the rotor blade, and a lightning receptor for receiving an electrical current from the lightning. The vortex generator and the lightning receptor are arranged such with regard to each other that the lightning is guided to the lightning receptor by the vortex which is generated by the vortex generator.Type: ApplicationFiled: July 23, 2015Publication date: May 19, 2016Inventors: PEDER BAY ENEVOLDSEN, KAJ OLSEN, KARSTEN SCHIBSBYE
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Patent number: 9334852Abstract: A lightning protection system for a wind turbine with a tower, a nacelle, a blade hub and a blade attached to the blade hub is provided. The lightning protection system includes an inner conductor inside the blade, an outer conductor arranged outside the blade and in electrical communication with the inner conductor, a collecting conductor arranged at the front end of the nacelle and in electrical communication with the outer conductor and a down-conductor connected to ground and in electrical communication with the collecting conductor. The outer conductor and the collecting conductor have substantially a same distance to the rotational axis. Further, a wind turbine with such a lightning protection system is provided.Type: GrantFiled: June 1, 2011Date of Patent: May 10, 2016Assignee: SIEMENS AKTIENGESELLSCHAFTInventor: Kaj Olsen
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Patent number: 9181927Abstract: A lightning protection system for a wind turbine includes at least one insulated high-voltage cable, a pick-up unit and an additional insulated high-voltage cable. The at least one insulated high-voltage cable is electrically connected to a lightning receptor and to the pick-up unit. The pick-up unit is electrically connectable to an electrically grounded member by the additional insulated high-voltage cable.Type: GrantFiled: April 20, 2012Date of Patent: November 10, 2015Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Bastian Lewke, Kaj Olsen
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Patent number: 9046566Abstract: A measuring system for a down conductor of a wind turbine blade includes a measuring cable connected in series with its first end to the down conductor. A second end of the measuring cable is accessible for measurement of the electrical resistance in a lower base part of the blade.Type: GrantFiled: August 16, 2011Date of Patent: June 2, 2015Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Jeppe Jakobsen, Kaj Olsen
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Patent number: 8896980Abstract: A method is provided for manufacturing a wind turbine rotor blade in which the blade is formed as a laminated structure by laying a composite material of fibre reinforcement material and/or core material in a mould defining the shape of the blade; evacuating the mould after laying the composite material; introducing a liquid polymer into the evacuated mould and wetting the composite material; curing the liquid polymer after the composite material has been wetted; and removing the mould after curing the liquid. At least one lightning conductor is integrated into the composite material before wetting it with the liquid polymer. Moreover, a wind turbine rotor blade made from a single laminated structure is provided with at least one lightning conductor is integrated into the laminated structure.Type: GrantFiled: April 5, 2012Date of Patent: November 25, 2014Assignee: Siemens AktiengesellschaftInventors: Jens Jørgen Østergaard Kristensen, Kaj Olsen
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Publication number: 20140112787Abstract: A lightning receptor arrangement for a wind turbine rotor blade arrangement includes a receptor element for receiving a lightning strike, a drainage channel extending from an interior cavity of the blade through the receptor element to an outside surface of the blade, and an electrically conductive connection to a down conductor of a grounding arrangement of the wind turbine. The receptor element is arranged at a point of origin of a vortex generated during rotation of the rotor blade.Type: ApplicationFiled: October 14, 2013Publication date: April 24, 2014Inventors: Connie-Ann Bracht, Kaj Olsen
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Patent number: 8632306Abstract: A wind turbine blade has at least one lightning receptor, wherein at least part of a surface of the wind turbine blade close to the lightning receptor is covered by a protective layer having electrical and thermal insulating material. Moreover, a method for protecting the surface of a wind turbine blade close to a lightning protector against temperature increase resulting from lightning impact is disclosed. At least part of the surface of the wind turbine blade is covered with a protective layer having electrical and thermal insulating material.Type: GrantFiled: May 14, 2012Date of Patent: January 21, 2014Assignee: Siemens AktiengesellschaftInventor: Kaj Olsen
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Patent number: 8430631Abstract: A wind turbine blade has at least one lightning receptor, wherein at least part of a surface of the wind turbine blade close to the lightning receptor is covered by a protective layer having electrical and thermal insulating material. Moreover, a method for protecting the surface of a wind turbine blade close to a lightning protector against temperature increase resulting from lightning impact is disclosed. At least part of the surface of the wind turbine blade is covered with a protective layer having electrical and thermal insulating material.Type: GrantFiled: June 23, 2009Date of Patent: April 30, 2013Assignee: Siemens AktiengesellschaftInventor: Kaj Olsen
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Patent number: 8313295Abstract: A lightning protection system is provided for protecting a device for exterior use, in particular a wind turbine, from damages based on a lightning stroke. The lightning protection system includes a choke element. The choke element is adapted for being mounted around a shaft of the device in such a manner that a current flow through the shaft causes a magnetic flux in the choke element.Type: GrantFiled: August 13, 2009Date of Patent: November 20, 2012Assignee: Siemens AktiengesellschaftInventor: Kaj Olsen
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Publication number: 20120282097Abstract: A lightning protection system for a wind turbine includes at least one insulated high-voltage cable, a pick-up unit and an additional insulated high-voltage cable. The at least one insulated high-voltage cable is electrically connected to a lightning receptor and to the pick-up unit. The pick-up unit is electrically connectable to an electrically grounded member by the additional insulated high-voltage cable.Type: ApplicationFiled: April 20, 2012Publication date: November 8, 2012Inventors: Bastian LEWKE, Kaj OLSEN
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Publication number: 20120243997Abstract: A wind turbine blade has at least one lightning receptor, wherein at least part of a surface of the wind turbine blade close to the lightning receptor is covered by a protective layer having electrical and thermal insulating material. Moreover, a method for protecting the surface of a wind turbine blade close to a lightning protector against temperature increase resulting from lightning impact is disclosed. At least part of the surface of the wind turbine blade is covered with a protective layer having electrical and thermal insulating material.Type: ApplicationFiled: May 14, 2012Publication date: September 27, 2012Inventor: Kaj Olsen
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Publication number: 20120205133Abstract: A lightning protection system for a tower of a wind turbine is provided. The tower includes a reinforced concrete tower wall in which a plurality of electrically conductive structural reinforcing elements are embedded during construction. The lightning protection system includes a plurality of the structural reinforcing elements connected in an electrically conductive manner with each other and with a ground terminal. Further, a method of incorporating such a lightning protection system in a reinforced concrete tower, and a wind turbine with such a lightning protection system is provided.Type: ApplicationFiled: January 15, 2010Publication date: August 16, 2012Inventors: Martin Johan Smith Jensen, Bastian Lewke, Kaj Olsen
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Publication number: 20120194960Abstract: A method is provided for manufacturing a wind turbine rotor blade in which the blade is formed as a laminated structure by laying a composite material of fibre reinforcement material and/or core material in a mould defining the shape of the blade; evacuating the mould after laying the composite material; introducing a liquid polymer into the evacuated mould and wetting the composite material; curing the liquid polymer after the composite material has been wetted; and removing the mould after curing the liquid. At least one lightning conductor is integrated into the composite material before wetting it with the liquid polymer. Moreover, a wind turbine rotor blade made from a single laminated structure is provided with at least one lightning conductor is integrated into the laminated structure.Type: ApplicationFiled: April 5, 2012Publication date: August 2, 2012Inventors: Jens Jørgen Østergaard Kristensen, Kaj Olsen
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Patent number: 8191255Abstract: A method is provided for manufacturing a wind turbine rotor blade in which the blade is formed as a laminated structure by laying a composite material of fiber reinforcement material and/or core material in a mold defining the shape of the blade; evacuating the mold after laying the composite material; introducing a liquid polymer into the evacuated mold and wetting the composite material; curing the liquid polymer after the composite material has been wetted; and removing the mold after curing the liquid. At least one lightning conductor is integrated into the composite material before wetting it with the liquid polymer. Moreover, a wind turbine rotor blade made from a single laminated structure is provided with at least one lightning conductor is integrated into the laminated structure.Type: GrantFiled: April 14, 2009Date of Patent: June 5, 2012Assignee: Siemens AktiengesellschaftInventors: Jens Jørgen Østergaard Kristensen, Kaj Olsen