Patents by Inventor Knut Schonhowd Kristensen
Knut Schonhowd Kristensen 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: 10049818Abstract: A capacitor support system includes a support structure configured to support at least one capacitor and a pressure generating module configured to generate a pressure on the at least one capacitor. The pressure generating module includes a bearing plate, a transmission plate, and at least one plate shaped leaf spring provided between the bearing plate and the pressure transmission plate. The pressure generating module is connected to the support structure by the bearing plate. The bearing plate is fixedly connected to the connecting structure in such a way that it provides a bearing surface for the at least one leaf spring and keeps the at least one leaf spring in a compressed state between the bearing plate and the at least one capacitor.Type: GrantFiled: July 24, 2015Date of Patent: August 14, 2018Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Fredrik Gundersen Aarskog, Knut Schonhowd Kristensen, Miroslaw Rozycki, Arve Skjetne
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Patent number: 9998023Abstract: A modular subsea converter for providing a frequency conversion of AC electric power is provided. The modular subsea converter includes at least one base module having a subsea enclosure and electrical connections disposed within the subsea enclosure. It further includes at least one converter module having a converter unit. The converter module is coupled to the base module and has a subsea enclosure in which the converter unit is disposed. The electrical connections of the base module are coupled to the converter unit of the converter module and the subsea enclosure of the converter module is mounted to the subsea enclosure of the base module.Type: GrantFiled: February 3, 2015Date of Patent: June 12, 2018Assignee: SIEMENS AKTIENGESELLSCHAFTInventor: Knut Schonhowd Kristensen
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Publication number: 20170164495Abstract: A subsea converter module is provided. A subsea enclosure is configured to provide a fluid tight sealing of the inside of the subsea enclosure to the outside of the subsea enclosure. At least one converter unit for providing frequency conversion of AC electrical power is disposed in the subsea enclosure. The subsea enclosure includes a mounting portion for mounting the subsea converter module to a base module of a subsea converter. The subsea enclosure includes an end wall that provides separation towards the base module when the subsea converter module is mounted to the base module.Type: ApplicationFiled: August 12, 2014Publication date: June 8, 2017Applicant: Siemens AktiengesellschaftInventors: Fredrik Gundersen AARSKOG, Knut Schonhowd KRISTENSEN
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Publication number: 20170140872Abstract: A capacitor support system includes a support structure configured to support at least one capacitor and a pressure generating module configured to generate a pressure on the at least one capacitor. The pressure generating module includes a bearing plate, a transmission plate, and at least one plate shaped leaf spring provided between the bearing plate and the pressure transmission plate. The pressure generating module is connected to the support structure by the bearing plate. The bearing plate is fixedly connected to the connecting structure in such a way that it provides a bearing surface for the at least one leaf spring and keeps the at least one leaf spring in a compressed state between the bearing plate and the at least one capacitor.Type: ApplicationFiled: July 24, 2015Publication date: May 18, 2017Applicant: Siemens AktiengesellschaftInventors: Fredrik Gundersen AARSKOG, Knut Schonhowd KRISTENSEN, Miroslaw ROZYCKI, Arve SKJETNE
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Publication number: 20170055356Abstract: A method of detecting a failure in a pressure compensation system, in which a group of pressure compensators compensate volume changes of a liquid in a chamber of a subsea device, is provided. The group of pressure compensators includes at least a first pressure compensator and one or more further pressure compensators. The pressure compensators in the group are biased so that the pressure inside the pressure compensators is larger than a pressure prevailing in a medium surrounding the subsea device. Based on the detection of drift in a displacement measured for at least one pressure compensator, it is determined whether the first pressure compensator has failed or whether one of the further pressure compensators has failed, thus determining the location of the failed pressure compensator.Type: ApplicationFiled: March 11, 2015Publication date: February 23, 2017Applicant: Siemens AktiengesellschaftInventor: Knut Schonhowd KRISTENSEN
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Patent number: 9570224Abstract: A pressure compensation system is provided. A subsea enclosure of the subsea device encloses the chamber. A first pressure compensator has a first compensation volume and provides pressure balancing between ambient medium surrounding the subsea device and the first compensation volume. A first biasing device is configured to bias the first pressure compensator such that the pressure in the first compensation volume is higher than the pressure in the ambient medium surrounding the subsea device. A second pressure compensator has a second compensation volume and provides pressure balancing between the ambient medium and the second compensation volume. A second biasing device biases the second pressure compensator such that the pressure in the second compensation volume is higher than the pressure in the ambient medium. A control unit is connected to control first and second valves arranged in flow connections between the first and second compensation volumes and the chamber.Type: GrantFiled: March 19, 2015Date of Patent: February 14, 2017Assignee: Siemens AktiengesellschaftInventor: Knut Schonhowd Kristensen
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Publication number: 20160352240Abstract: A modular subsea converter for providing a frequency conversion of AC electric power is provided. The modular subsea converter includes at least one base module having a subsea enclosure and electrical connections disposed within the subsea enclosure. It further includes at least one converter module having a converter unit. The converter module is coupled to the base module and has a subsea enclosure in which the converter unit is disposed. The electrical connections of the base module are coupled to the converter unit of the converter module and the subsea enclosure of the converter module is mounted to the subsea enclosure of the base module.Type: ApplicationFiled: February 3, 2015Publication date: December 1, 2016Applicant: Siemens AktiengesellschaftInventor: Knut Schonhowd KRISTENSEN
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Patent number: 9450385Abstract: A subsea switchgear is provided. The subsea switchgear includes a first power input for receiving electric power from a power source and a second power input for receiving electric power from a power source. It further includes a power distribution bus and a first circuit breaker coupled between the first power input and the power distribution bus. The first circuit breaker is configured to be capable of disconnecting the first power input from the power distribution bus. A second circuit breaker is further coupled between the second power input and the power distribution bus. The second circuit breaker is configured to be capable of disconnecting the second power input from the power distribution bus.Type: GrantFiled: June 20, 2014Date of Patent: September 20, 2016Assignee: SIEMENS AKTIENGESELLSCHAFTInventor: Knut Schonhowd Kristensen
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Publication number: 20160212883Abstract: A subsea enclosure system is disclosed. In an embodiment, the subsea enclosure system includes an enclosure adapted to be deployed under water; a heat generating electric or electronic component arranged in the enclosure; and a non-fluid block including an electrically insulating, thermally conductive material. The non-fluid block is, on at least one surface, in direct contact with the heat generating electronic component and, on another surface, in contact with the inner surface of one or more walls of the pressure resistant enclosure, enabling the non-fluid transfer of heat from the electronic component to the wall of the enclosure when the subsea enclosure system is operating.Type: ApplicationFiled: September 18, 2014Publication date: July 21, 2016Inventors: Knut Schonhowd KRISTENSEN, Baard Jonas WIGESTRAND
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Publication number: 20160141843Abstract: A subsea switchgear is provided. The subsea switchgear includes a first power input for receiving electric power from a power source and a second power input for receiving electric power from a power source. It further includes a power distribution bus and a first circuit breaker coupled between the first power input and the power distribution bus. The first circuit breaker is configured to be capable of disconnecting the first power input from the power distribution bus. A second circuit breaker is further coupled between the second power input and the power distribution bus. The second circuit breaker is configured to be capable of disconnecting the second power input from the power distribution bus.Type: ApplicationFiled: June 20, 2014Publication date: May 19, 2016Inventor: Knut Schonhowd KRISTENSEN
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Publication number: 20150277452Abstract: A pressure compensation system is provided. A subsea enclosure of the subsea device encloses the chamber. A first pressure compensator has a first compensation volume and provides pressure balancing between ambient medium surrounding the subsea device and the first compensation volume. A first biasing device is configured to bias the first pressure compensator such that the pressure in the first compensation volume is higher than the pressure in the ambient medium surrounding the subsea device. A second pressure compensator has a second compensation volume and provides pressure balancing between the ambient medium and the second compensation volume. A second biasing device biases the second pressure compensator such that the pressure in the second compensation volume is higher than the pressure in the ambient medium. A control unit is connected to control first and second valves arranged in flow connections between the first and second compensation volumes and the chamber.Type: ApplicationFiled: March 19, 2015Publication date: October 1, 2015Inventor: Knut Schonhowd Kristensen