Patents by Inventor Bernardo Galletti
Bernardo Galletti 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: 11373824Abstract: The present disclosure provides a gas-insulated high or medium voltage circuit breaker including a first arcing contact and a second arcing contact, wherein at least one of the two arcing contacts is axially movable along a switching axis, wherein during a breaking operation, an arc between the first arcing contact and the second arcing contact is formed in an arcing region; a nozzle including a channel directed to the arcing region, for blowing an arc-extinguishing gas to the arcing region during the breaking operation; a diffuser portion adjacent to the nozzle, for transporting the gas from the arcing region to a region downstream of the diffuser portion; a buffer volume directly downstream of the diffuser portion; and an enclosure confined within a housing of the circuit breaker.Type: GrantFiled: December 21, 2018Date of Patent: June 28, 2022Assignee: Hitachi Energy Switzerland AGInventors: Bernardo Galletti, Valeria Teppati, Emmanouil Panousis, Angelos Garyfallos, Branimir Radisavljevic, Joerg Lehmann, Christoph Reutlinger, Daniel Over, Patrick Stoller
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Publication number: 20210383956Abstract: Radiator for a transformer comprising a plurality of radiator panels with at least a first and a second radiator panel extending in a substantially vertical direction, wherein the first and the second radiator panel form an air duct providing a gap there-between having a width of smaller than 90 mm, and wherein a first radio panel bottom edge is located at a lower vertical height position than a second radiator panel bottom edge, wherein the first radiator panel is located at a side of the radiator panel such that the first radiator panel and a transformer side form a transformer air duct wherein the second radio panel bottom edge is located at a larger height than the first radio panel bottom edge and wherein the radiator panels have an aspect ratio greater than 8 of a depth of the radiator panel over a width of the air duct.Type: ApplicationFiled: October 2, 2019Publication date: December 9, 2021Inventors: Bernardo Galletti, Andreas Blaszczyk, Wei Wu
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Publication number: 20210375567Abstract: The present disclosure provides a gas-insulated high or medium voltage circuit breaker including a first arcing contact and a second arcing contact, wherein at least one of the two arcing contacts is axially movable along a switching axis, wherein during a breaking operation, an arc between the first arcing contact and the second arcing contact is formed in an arcing region; a nozzle including a channel directed to the arcing region, for blowing an arc-extinguishing gas to the arcing region during the breaking operation; a diffuser portion adjacent to the nozzle, for transporting the gas from the arcing region to a region downstream of the diffuser portion; a buffer volume directly downstream of the diffuser portion; and an enclosure confined within a housing of the circuit breaker.Type: ApplicationFiled: December 21, 2018Publication date: December 2, 2021Applicant: ABB Power Grids Switzerland AGInventors: Bernardo GALLETTI, Valeria TEPPATI, Emmanouil PANOUSIS, Angelos GARYFALLOS, Branimir RADISAVLJEVIC, Joerg LEHMANN, Christoph REUTLINGER, Daniel OVER, Patrick STOLLER
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Patent number: 11127551Abstract: A circuit breaker includes: first and second contacts moveable relative to each other along an axis of the circuit breaker between an open and closed configuration and defining an arcing region in which an arc is formed during current breaking operation; a nozzle directing a flow of quenching gas onto the arcing region during current breaking operation, a diffusor downstream of the nozzle for further transporting the quenching gas within the arcing region and/or downstream of the arcing region, and a mechanical swirling device arranged downstream of the nozzle and at least partially in the diffusor for imparting a swirl onto the quenching gas flowing along the diffusor, the mechanical swirling device having an axial overlap with the second contact in the open configuration of the circuit breaker.Type: GrantFiled: December 18, 2018Date of Patent: September 21, 2021Assignee: ABB Power Grids Switzerland AGInventors: Xiangyang Ye, Bernardo Galletti, Mahesh Dhotre, Manuel Gotti, Martin Seeger
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Patent number: 11062862Abstract: The present disclosure provides a gas-insulated high or medium voltage circuit breaker including a first arcing contact and a second arcing contact, wherein at least one of the two arcing contacts is axially movable including a first and a second state of motion along a switching axis, wherein during a breaking operation, an arc between the first arcing contact and the second arcing contact is formed in an arcing region; a nozzle including a channel directed to the arcing region, for blowing an arc-extinguishing gas to the arcing region during the breaking operation; a diffuser adjacent to the nozzle, for transporting the gas from the arcing region to a region downstream of the diffuser; a buffer volume directly downstream of the diffuser, and an enclosure substantially surrounding the buffer volume circumferentially.Type: GrantFiled: December 21, 2018Date of Patent: July 13, 2021Assignee: ABB Power Grids Switzerland AGInventors: Bernardo Galletti, Valeria Teppati, Emmanouil Panousis, Angelos Garyfallos, Branimir Radisavljevic, Joerg Lehmann, Christoph Reutlinger, Daniel Over, Patrick Stoller
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Patent number: 10964498Abstract: A gas-insulated low- or medium-voltage load break switch includes: a housing defining a housing volume for holding an insulation gas at an ambient pressure; a first arcing contact and a second arcing contact arranged within the housing volume, the first and second arcing contacts being movable in relation to each other along an axis of the load break switch and defining a quenching region in which an arc is formed during a current breaking operation; a pressurizing system having a pressurizing chamber arranged within the housing volume for pressurizing a quenching gas from an ambient pressure p0 to a quenching pressure pquench during the current breaking operation; and a nozzle system arranged within the housing volume for blowing the pressurized quenching gas in a subsonic flow pattern from the pressurization chamber onto the arc formed in the quenching region during the current breaking operation.Type: GrantFiled: December 3, 2018Date of Patent: March 30, 2021Assignee: ABB Schweiz AGInventors: Bernardo Galletti, Elham Attar, Jan Carstensen, Magne Saxegaard, Martin Kristoffersen, Martin Seeger, Michael Schwinne, Nitesh Ranjan, Patrick Stoller
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Publication number: 20210043401Abstract: A circuit breaker includes: first and second contacts moveable relative to each other along an axis of the circuit breaker between an open and closed configuration and defining an arcing region in which an arc is formed during current breaking operation; a nozzle directing a flow of quenching gas onto the arcing region during current breaking operation, a diffusor downstream of the nozzle for further transporting the quenching gas within the arcing region and/or downstream of the arcing region, and a mechanical swirling device arranged downstream of the nozzle and at least partially in the diffusor for imparting a swirl onto the quenching gas flowing along the diffusor, the mechanical swirling device having an axial overlap with the second contact in the open configuration of the circuit breaker.Type: ApplicationFiled: December 18, 2018Publication date: February 11, 2021Applicant: ABB Power Grids Switzerland AGInventors: Xiangyang YE, Bernardo GALLETTI, Mahesh DHOTRE, Manuel GOTTI, Martin SEEGER
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Publication number: 20200395180Abstract: The present disclosure provides a gas-insulated high or medium voltage circuit breaker including a first arcing contact and a second arcing contact, wherein at least one of the two arcing contacts is axially movable including a first and a second state of motion along a switching axis, wherein during a breaking operation, an arc between the first arcing contact and the second arcing contact is formed in an arcing region; a nozzle including a channel directed to the arcing region, for blowing an arc-extinguishing gas to the arcing region during the breaking operation; a diffuser adjacent to the nozzle, for transporting the gas from the arcing region to a region downstream of the diffuser; a buffer volume directly downstream of the diffuser, and an enclosure substantially surrounding the buffer volume circumferentially.Type: ApplicationFiled: December 21, 2018Publication date: December 17, 2020Applicant: ABB Power Grids Switzerland AGInventors: Bernardo GALLETTI, Valeria TEPPATI, Emmanouil PANOUSIS, Angelos GARYFALLOS, Branimir RADISAVLJEVIC, Joerg LEHMANN, Christoph REUTLINGER, Daniel OVER, Patrick STOLLER
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Patent number: 10699862Abstract: A gas-insulated high-voltage switching device which includes an arcing contact arrangement having a first arcing zone member and a second arcing zone member that are movable relative to one another along an axis. An auxiliary nozzle surrounds at least a part of a second arcing contact unit and has an auxiliary nozzle throat having an axial extension and allowing passage at least of an end of the first arcing contact unit. A main nozzle throat has an axial extension sideways of the auxiliary nozzle throat and allows passage at least of the end of the first arcing contact unit. A cross-sectional area of the main nozzle throat is substantially decreasing in the direction away from the auxiliary nozzle throat so as to form a substantially converging duct for the flow of an arc-extinguishing gas.Type: GrantFiled: January 22, 2019Date of Patent: June 30, 2020Assignee: ABB Power Grids Switzerland AGInventors: Bernardo Galletti, Manuel Gotti, Markus Bujotzek, Martin Seeger
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Publication number: 20190172668Abstract: A gas-insulated high-voltage switching device which includes an arcing contact arrangement having a first arcing zone member and a second arcing zone member that are movable relative to one another along an axis. An auxiliary nozzle surrounds at least a part of a second arcing contact unit and has an auxiliary nozzle throat having an axial extension and allowing passage at least of an end of the first arcing contact unit. A main nozzle throat has an axial extension sideways of the auxiliary nozzle throat and allows passage at least of the end of the first arcing contact unit. A cross-sectional area of the main nozzle throat is substantially decreasing in the direction away from the auxiliary nozzle throat so as to form a substantially converging duct for the flow of an arc-extinguishing gas.Type: ApplicationFiled: January 22, 2019Publication date: June 6, 2019Inventors: Bernardo Galletti, Manuel Gotti, Markus Bujotzek, Martin Seeger
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Publication number: 20190115174Abstract: A gas-insulated low- or medium-voltage load break switch includes: a housing defining a housing volume for holding an insulation gas at an ambient pressure; a first arcing contact and a second arcing contact arranged within the housing volume, the first and second arcing contacts being movable in relation to each other along an axis of the load break switch and defining a quenching region in which an arc is formed during a current breaking operation; a pressurizing system having a pressurizing chamber arranged within the housing volume for pressurizing a quenching gas from an ambient pressure p0 to a quenching pressure pquench during the current breaking operation; and a nozzle system arranged within the housing volume for blowing the pressurized quenching gas in a subsonic flow pattern from the pressurization chamber onto the arc formed in the quenching region during the current breaking operation.Type: ApplicationFiled: December 3, 2018Publication date: April 18, 2019Inventors: Bernardo Galletti, Elham Attar, Jan Carstensen, Magne Saxegaard, Martin Kristoffersen, Martin Seeger, Michael Schwinne, Nitesh Ranjan, Patrick Stoller
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Patent number: 9208936Abstract: An encapsulated delta transformer for medium to high voltages includes a hermetically sealed housing that encloses a volume, a delta shaped transformer arranged in the housing, and a passageway for a fluid. The passageway protruding through the housing and the volume enclosed by the passageway is in fluidal connection to an outside of the housing.Type: GrantFiled: January 7, 2014Date of Patent: December 8, 2015Assignee: ABB RESEARCH LTDInventors: Jasmin Smajic, Arthouros Iordanidis, Bernardo Galletti, Thorsten Steinmetz, Bernhard Petermeier
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Patent number: 9105389Abstract: The disclosure is related to a dry transformer, which includes a transformer core with at least two parallel limbs and upper and lower yokes, and at least two hollow cylindrical coils, each arranged as neighbored coils around a limb of the at least two parallel limbs. A cooling system can include at least one wall-like diaphragm in-between the neighbored coils, which is in parallel to the orientation of the limbs.Type: GrantFiled: July 12, 2013Date of Patent: August 11, 2015Assignee: ABB TECHNOLOGY AGInventors: Marcos Bockholt, Frank Cornelius, Jens Tepper, Burak Esenlik, Bhavesch Patel, Benjamin Weber, Arthouros Iordanidis, Jasmin Smajic, Thorsten Steinmetz, Bernardo Galletti
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Publication number: 20140118099Abstract: An encapsulated delta transformer for medium to high voltages includes a hermetically sealed housing that encloses a volume, a delta shaped transformer arranged in the housing, and a passageway for a fluid. The passageway protruding through the housing and the volume enclosed by the passageway is in fluidal connection to an outside of the housing.Type: ApplicationFiled: January 7, 2014Publication date: May 1, 2014Applicant: ABB RESEARCH LTDInventors: Jasmin SMAJIC, Arthouros Iordanidis, Bernardo Galletti, Thorsten Steinmetz, Bernhard Petermeier
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Patent number: 8604899Abstract: An electrical transformer is disclosed which includes an enclosure; a magnetic core assembly arranged within the enclosure, the magnetic core assembly having a first core limb, a second core limb and a third core limb; and three coil assemblies having a first coil assembly, a second coil assembly, and a third coil assembly. At least two diaphragms are arranged within the enclosure, the diaphragms being essentially sealed to a first outermost coil of the first coil assembly, and arranged for guiding a cooling fluid in series through a first inner fluid duct, a second inner fluid duct, a third inner fluid duct and an extra-coil volume along outsides of third, second and first outermost coil coils of the third, second and first coil assemblies.Type: GrantFiled: November 17, 2010Date of Patent: December 10, 2013Assignee: Abb Research Ltd.Inventors: Bernardo Galletti, Arthouros Iordanidis, Jasmin Smajic, Martin Carlen
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Publication number: 20130300526Abstract: The disclosure is related to a dry transformer, which includes a transformer core with at least two parallel limbs and upper and lower yokes, and at least two hollow cylindrical coils, each arranged as neighbored coils around a limb of the at least two parallel limbs. A cooling system can include at least one wall-like diaphragm in-between the neighbored coils, which is in parallel to the orientation of the limbs.Type: ApplicationFiled: July 12, 2013Publication date: November 14, 2013Inventors: Marcos BOCKHOLT, Frank Cornelius, Jens Tepper, Burak Esenlik, Bhavesch Patel, Benjamin Weber, Arthouros Iordanidis, Jasmin Smajic, Thorsten Steinmetz, Bernardo Galletti
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Publication number: 20130265693Abstract: A medium or high-voltage circuit breaker is provided. An arc-extinguishing fluid is stored in a pressure chamber, which is made up by an arcing chamber of the circuit breaker where an electrical arc is extinguished. No tubings or other conduction devices for pressurized fluids are necessary during current interruption. This speeds up contact separation and arc extinguishing. In a first, closed position of the circuit breaker, the pressure chamber is delimited by a sealing wall which is fixed to a movable first arcing contact. The sealing wall acts as a valve and as a piston at the same time, because it opens the outflow of pressurized arc extinguishing fluid and it concurrently actuates arcing contact separation. The arcing chamber enables the stored pressurized arc extinguishing fluid to perform fast contact separation within a few milliseconds and extinguishing a gaseous arc on the same timescale.Type: ApplicationFiled: April 5, 2013Publication date: October 10, 2013Applicant: ABB Technology AGInventors: Emmanouil PANOUSIS, Marcelo BUFFONI, Markus BUJOTZEK, Bernardo GALLETTI
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Publication number: 20120299677Abstract: An electrical transformer is disclosed which includes an enclosure; a magnetic core assembly arranged within the enclosure, the magnetic core assembly having a first core limb, a second core limb and a third core limb; and three coil assemblies having a first coil assembly, a second coil assembly, and a third coil assembly. At least two diaphragms are arranged within the enclosure, the diaphragms being essentially sealed to a first outermost coil of the first coil assembly, and arranged for guiding a cooling fluid in series through a first inner fluid duct, a second inner fluid duct, a third inner fluid duct and an extra-coil volume along outsides of third, second and first outermost coil coils of the third, second and first coil assemblies.Type: ApplicationFiled: November 17, 2010Publication date: November 29, 2012Applicant: ABB Research Ltd.Inventors: Bernardo Galletti, Arthouros Iordandis, Jasmin Smajic, Martin Carlen