Patents by Inventor Ove Styhm
Ove Styhm 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: 10186470Abstract: A heat sink for cooling at least one power semiconductor module, and that includes a basin for containing a cooling liquid. The basin has a contact rim for receiving the base plate and that includes a surface that is sloped inwards to the basin.Type: GrantFiled: May 26, 2017Date of Patent: January 22, 2019Assignee: VESTAS WIND SYSTEMS A/SInventors: Tusitha Abeyasekera, Thomas Lundgren Andersen, Henrik B. Møller, Ove Styhm
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Publication number: 20170263534Abstract: A heat sink for cooling at least one power semiconductor module, and that includes a basin for containing a cooling liquid. The basin has a contact rim for receiving the base plate and that includes a surface that is sloped inwards to the basin.Type: ApplicationFiled: May 26, 2017Publication date: September 14, 2017Applicant: VESTAS WIND SYSTEMS A/SInventors: Tusitha ABEYASEKERA, Thomas Lundgren ANDERSON, Henrik B. MØLLER, Ove STYHM
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Patent number: 9722416Abstract: According to an embodiment, a power generation system is provided comprising a power generator; a plurality of converter modules, each converter module having a DC link, wherein the DC link of each converter module is connected to the DC links of the other converter modules of the plurality of converter modules via a fuse associated with the converter module; and a controller configured to, if it is detected that there is a fault in one of the converter modules, disconnect the converter module in which there is a fault from the power generator and connect two or more other converters module of the plurality of converter modules to the power generator and to control the power generation system to supply power to the DC links of the two or more other converter modules such that power is supplied to the converter module in which there is a fault via the fuse associated with the converter module such that the fuse associated with the converter module melts.Type: GrantFiled: July 11, 2012Date of Patent: August 1, 2017Assignee: VESTAS WIND SYSTEMS A/SInventors: John Godsk Nielsen, Ove Styhm
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Patent number: 9666504Abstract: A heat sink for cooling at least one power semiconductor module, and that includes a basin for containing a cooling liquid. The basin has a contact rim for receiving the base plate and that includes a surface that is sloped inwards to the basin.Type: GrantFiled: July 2, 2012Date of Patent: May 30, 2017Assignee: VESTAS WIND SYSTEMS A/SInventors: Tusitha Abeyasekera, Thomas Lundgren Anderson, Henrik B. Møller, Ove Styhm
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Patent number: 9590546Abstract: A power dissipating arrangement for dissipating power from a generator in a wind turbine is provided. The generator comprises a plurality of output terminals corresponding to a multi-phase output. The power dissipating arrangement comprises a plurality of dissipating units, a plurality of semiconductor switches, a trigger circuit for switching the semiconductor switches and a control unit for controlling the operation of the trigger circuit, thereby controlling the switching of the semiconductor switches.Type: GrantFiled: November 6, 2015Date of Patent: March 7, 2017Assignee: VESTAS WIND SYSTEMS A/SInventors: Ove Styhm, Anshuman Tripathi, Amit Kumar Gupta
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Patent number: 9325268Abstract: A power dissipating arrangement for dissipating power from a generator in a wind turbine is provided. The generator comprises a plurality of output terminals corresponding to a multi-phase output. The power dissipating arrangement comprises a plurality of dissipating units, a plurality of semiconductor switches, a trigger circuit for switching the semiconductor switches and a control unit for controlling the operation of the trigger circuit, thereby controlling the switching of the semiconductor switches. Each dissipating unit includes a first terminal and a second terminal. The first terminal of each dissipating unit is coupled to each output terminal of the generator. Each semiconductor switch includes a first terminal anode, a second terminal and a gate terminal.Type: GrantFiled: July 24, 2012Date of Patent: April 26, 2016Assignee: Vestas Wind Systems A/SInventors: Ove Styhm, Anshuman Tripathi, Amit Kumar Gupta
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Publication number: 20160099561Abstract: A power dissipating arrangement for dissipating power from a generator in a wind turbine is provided. The generator comprises a plurality of output terminals corresponding to a multi-phase output. The power dissipating arrangement comprises a plurality of dissipating units, a plurality of semiconductor switches, a trigger circuit for switching the semiconductor switches and a control unit for controlling the operation of the trigger circuit, thereby controlling the switching of the semiconductor switches.Type: ApplicationFiled: November 6, 2015Publication date: April 7, 2016Inventors: Ove STYHM, Anshuman TRIPATHI, Amit Kumar GUPTA
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Patent number: 9115690Abstract: Systems and methods for maintaining the active power production of a fluid turbine and regulating the temperature of an electrical generating component by controlling the reactive power production are disclosed. A thermal parameter of the electrical generating component is monitored. If the electrical generating component exceeds a thermal parameter the reactive power production of the turbine is reduced. A fluid turbine may be de-rated to further reduce an electrical generating component's thermal parameter. A fluid turbine may shut down to further reduce an electrical generating component's thermal parameter. A fluid turbine's power production is re-started when the electrical generating component returns to an acceptable thermal parameter.Type: GrantFiled: May 24, 2013Date of Patent: August 25, 2015Assignee: OGIN, INC.Inventors: Bo Lovmand, Claus Sejdelin Schrøder, Søren Dalsgaard, Ove Styhm Kristensen
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Publication number: 20150168061Abstract: The present disclosure relates to electrical generators, more specifically to an apparatus and method for dehumidifying the windings and insulation system of a generator. The application of low-voltage, low-frequency, high-AC-current provides precise control of the rise of temperature in the winding. The controlled temperature increase occurs uniformly over the complete length of the winding, providing uniform dehumidification of the insulation system such that connection to the inverter and power production occurs without risk of damage to the insulation system.Type: ApplicationFiled: December 18, 2014Publication date: June 18, 2015Inventors: Ove Styhm Kristensen, Rasmus Peter Jensen
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Patent number: 8994202Abstract: A method of operating a wind turbine is disclosed, the wind turbine comprising a power generator, a machine-side converter connected to the power generator, a line-side converter connected to a power grid through associated power components, and a DC-link connected between the machine-side converter and the line-side converter. The method includes monitoring the power grid for overvoltage events, and upon detecting an overvoltage event: (1) disabling active operation of the machine-side converter and the line-side converter, (2) enabling an AC load dump connected between the machine side converter and the power generator in order to dissipate power output from the power generator, (3) waiting for a waiting period, and (4) enabling active operation of the line-side converter and the machine converter when the overvoltage event ends within the waiting period.Type: GrantFiled: December 7, 2011Date of Patent: March 31, 2015Assignee: Vestas Wind Systems A/SInventors: Amit Kumar Gupta, Anshuman Tripathi, Ove Styhm, Lars Helle, Yugarajan Karuppanan, Gil Lampong Opina, Jr.
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Patent number: 8957536Abstract: A wind turbine is provided. The wind turbine includes a generator, an output thereof being connectable to a power grid via a power transmission path, the power transmission path comprising a generator side converter coupled to the output of the generator, a grid side converter coupled to the power grid, and a DC link coupled between the generator side converter and the grid side converter. For diverting the generator power, a load dump arrangement is provided which includes at least one resistor, a plurality of switches, and a plurality of electrical connections which electrically connect the at least one resistor to the output of the generator and across the DC link via the plurality of switches. One common and configurable load dump is used for both converter system failures and grid failures. As compared to two separate load dumps for converter failures and grid failures, the single load dump will require a smaller space for a wind turbine.Type: GrantFiled: December 27, 2012Date of Patent: February 17, 2015Assignee: Vestas Wind Systems A/SInventors: Amit Kumar Gupta, Anshuman Tripathi, Ramasamy Anbarasu, Ove Styhm, Gil Lampong Opina, Jr., Yugarajan Karuppanan, Bing Li, Shu Yu Cao
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Patent number: 8898025Abstract: Method, system, and computer readable medium for determining a fault in a power filter of a wind turbine generator. The method may include the steps of calculating a reactive power consumed by the power filter, and comparing the calculated reactive power to a predefined threshold reactive power to determine the fault.Type: GrantFiled: August 20, 2010Date of Patent: November 25, 2014Assignee: Vestas Wind Systems A/SInventors: Bo Yin, John Godsk Nielsen, Kim B. Larsen, Ove Styhm, Kheng Hong Ang
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Publication number: 20140217730Abstract: A power dissipating arrangement for dissipating power from a generator in a wind turbine is provided. The generator comprises a plurality of output terminals corresponding to a multi-phase output. The power dissipating arrangement comprises a plurality of dissipating units, a plurality of semiconductor switches, a trigger circuit for switching the semiconductor switches and a control unit for controlling the operation of the trigger circuit, thereby controlling the switching of the semiconductor switches. Each dissipating unit includes a first terminal and a second terminal. The first terminal of each dissipating unit is coupled to each output terminal of the generator. Each semiconductor switch includes a first terminal anode, a second terminal and a gate terminal.Type: ApplicationFiled: July 24, 2012Publication date: August 7, 2014Applicant: VESTAS WIND SYSTEMS A/SInventors: Ove Styhm, Anshuman Tripathi, Amit Kumar Gupta
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Publication number: 20140204533Abstract: A heat sink for cooling at least one power semiconductor module, and that includes a basin for containing a cooling liquid. The basin has a contact rim for receiving the base plate and that includes a surface that is sloped inwards to the basin.Type: ApplicationFiled: July 2, 2012Publication date: July 24, 2014Applicant: VESTAS WIND SYSTEMS A/SInventors: Tusitha Abeyasekera, Thomas Lundgren Anderson, Henrik B. Møller, Ove Styhm
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Publication number: 20140192570Abstract: According to an embodiment, a power generation system is provided comprising a power generator; a plurality of converter modules, each converter module having a DC link, wherein the DC link of each converter module is connected to the DC links of the other converter modules of the plurality of converter modules via a fuse associated with the converter module; and a controller configured to, if it is detected that there is a fault in one of the converter modules, disconnect the converter module in which there is a fault from the power generator and connect two or more other converters module of the plurality of converter modules to the power generator and to control the power generation system to supply power to the DC links of the two or more other converter modules such that power is supplied to the converter module in which there is a fault via the fuse associated with the converter module such that the fuse associated with the converter module melts.Type: ApplicationFiled: July 11, 2012Publication date: July 10, 2014Applicant: VESTAS WIND SYSTEMS A/SInventors: John Godsk Nielsen, Ove Styhm
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Patent number: 8698334Abstract: A wind park, a method of correcting voltage imbalances, and a wind turbine are provided. The wind park includes at least one wind turbine; a transformer coupled between the at least one wind turbine and a power grid. The transformer includes a primary winding arrangement coupled to the power grid, and a secondary winding arrangement coupled to the at least one wind turbine. The power grid includes at least three power lines, each power line conducting a respective phase of a multi-phase current. Each power line of the power grid is coupled to the primary winding arrangement via an individual tap changer. Influences of the detected voltage imbalances on the wind turbines can be compensated.Type: GrantFiled: April 16, 2010Date of Patent: April 15, 2014Assignee: Vestas Wind Systems A/SInventors: Yin Bo, Heng Deng, Ove Styhm, Kim B. Larsen
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Publication number: 20140001759Abstract: According to an embodiment of the present invention, a method of operating a wind turbine including a power generator, a generator/machine side converter connected to the power generator, a grid/line side converter connected to a power grid through power components, and a DC-link connected between the machine side converter and the line side converter, comprises: Monitoring the power grid for overvoltage events; if an overvoltage event is detected disabling active operation of the machine side converter and of the line side converter, enabling an AC-load dump connected between the machine side converter and the power generator in order to dissipate active power output by the power generator into the AC-load dump, waiting for a waiting period, and enabling active operation of the line side converter and the machine side converter if the overvoltage ends within the waiting period.Type: ApplicationFiled: December 7, 2011Publication date: January 2, 2014Applicant: VESTAS WIND SYSTEMS A/SInventors: Amit Kumar Gupta, Anshuman Tripathi, Ove Styhm, Lars Helle, Yugarajan Karuppanan, Gil Lampong Opina
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Publication number: 20130313827Abstract: The present invention relates to systems and methods for maintain the active power production of a fluid turbine and regulating the temperature of an electrical generating component by controlling the reactive power production. A thermal parameter of the electrical generating component is monitored. If the electrical generating component exceeds a thermal parameter the reactive power production of the turbine is reduced. A fluid turbine may be de-rated to further reduce an electrical generating component's thermal parameter. A fluid turbine may shut down to further reduce an electrical generating component's thermal parameter. A fluid turbine's power production is re-started when the electrical generating component returns to an acceptable thermal parameter.Type: ApplicationFiled: May 24, 2013Publication date: November 28, 2013Inventors: Bo Lovmand, Claus Sejdelin Schrøder, Søren Dalsgaard, Ove Styhm Kristensen
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Patent number: 8183705Abstract: A wind park, a method of correcting voltage imbalances, and a wind turbine are provided. The wind park includes at least one wind turbine; a transformer coupled between the at least one wind turbine and a power grid. The transformer includes a primary winding arrangement coupled to the power grid, and a secondary winding arrangement coupled to the at least one wind turbine. The power grid includes at least three power lines, each power line conducting a respective phase of a multi-phase current. Each power line of the power grid is coupled to the primary winding arrangement via an individual tap changer. Influences of the detected voltage imbalances on the wind turbines can be compensated.Type: GrantFiled: April 16, 2010Date of Patent: May 22, 2012Assignee: Vestas Wind Systems A/SInventors: Yin Bo, Heng Deng, Ove Styhm, Kim B. Larsen
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Publication number: 20110106470Abstract: Method, system, and computer readable medium for determining a fault in a power filter of a wind turbine generator. The method may include the steps of calculating a reactive power consumed by the power filter, and comparing the calculated reactive power to a predefined threshold reactive power to determine the fault.Type: ApplicationFiled: August 20, 2010Publication date: May 5, 2011Applicant: VESTAS WIND SYSTEMS A/SInventors: Bo Yin, John Godsk Nielsen, Kim B. Larsen, Ove Styhm, Kheng Hong Ang