Patents by Inventor Francesco Stallone
Francesco Stallone 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: 9118233Abstract: The electric machine has a stator with windings connected to phase connections. An insulating cap protects the reciprocally connected portions of the phase connections and windings. The insulating cap has a box-shaped body with an opening for the introduction of a winding within it. The body defines a seat housing the phase connection. The seat is formed in one piece with the body.Type: GrantFiled: November 7, 2011Date of Patent: August 25, 2015Assignee: ALSTOM TECHNOLOGY LTDInventors: Francesco Stallone, Grzegorz Kunka, Daniel Hediger
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Patent number: 9059617Abstract: A connection arrangement is provided for the windings of an electric machine and includes a plurality of phase connections, each phase connection including conductors, each conductor having an annular or annular sector shape and includes a plurality of connecting ends. The conductors of each phase connection are radially shifted.Type: GrantFiled: September 12, 2012Date of Patent: June 16, 2015Assignee: ALSTOM TECHNOLOGY LTD.Inventors: Francesco Stallone, Hossein Safari Zadeh, Konstantinos Ballos, Johann Haldemann
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Patent number: 9027233Abstract: A supporting basket for an end winding of a stator winding of an electrical machine, the supporting basket including: at least one supporting ring; a plurality of supporting brackets arranged circumferentially distributed along the at least one supporting ring and attached to the at least one supporting ring; and a plurality of round connectors arranged radially externally on the supporting brackets, the round connectors extending circumferentially and being attached to the supporting brackets; wherein the supporting brackets, the at least one supporting ring, and the round connectors comprise an impregnation formed by dip-impregnation as a preassembled unit.Type: GrantFiled: November 4, 2011Date of Patent: May 12, 2015Assignee: Alstom Technology Ltd.Inventors: Daniel Hediger, Francesco Stallone
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Publication number: 20130069458Abstract: A connection arrangement is provided for the windings of an electric machine and includes a plurality of phase connections, each phase connection including conductors, each conductor having an annular or annular sector shape and includes a plurality of connecting ends. The conductors of each phase connection are radially shifted.Type: ApplicationFiled: September 12, 2012Publication date: March 21, 2013Applicant: ALSTOM TECHNOLOGY LTD.Inventors: Francesco STALLONE, Hossein SAFARI ZADEH, Konstantinos BALLOS, Johann HALDEMANN
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Publication number: 20120112583Abstract: The electric machine has a stator with windings connected to phase connections. An insulating cap protects the reciprocally connected portions of the phase connections and windings. The insulating cap has a box-shaped body with an opening for the introduction of a winding within it. The body defines a seat housing the phase connection. The seat is formed in one piece with the body.Type: ApplicationFiled: November 7, 2011Publication date: May 10, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: Francesco STALLONE, Grzegorz KUNKA, Daniel HEDIGER
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Publication number: 20120049681Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.Type: ApplicationFiled: November 4, 2011Publication date: March 1, 2012Inventors: Daniel HEDIGER, Francesco STALLONE
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Patent number: 8074343Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.Type: GrantFiled: November 2, 2009Date of Patent: December 13, 2011Assignee: ALSTOM Technology Ltd.Inventors: Daniel Hediger, Francesco Stallone
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Publication number: 20110215670Abstract: The tightening device (7) for end winding supports of an electric generator includes a rod (10) supporting a wedge (11), a plurality of springs (14) and a nut (13). It also includes a spacer (15) provided between the wedge (11) and the nut (13), arranged to define the smallest axial distance between the wedge (11) and the nut (13).Type: ApplicationFiled: February 18, 2011Publication date: September 8, 2011Inventors: Andre Arndt, Francesco Stallone
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Patent number: 7965013Abstract: An insulating cover or a bar-to-bar connection of a stator winding of an electric machine has only one opening and is made from a flexible insulating material embedding the bar-to-bar connection entirely in a tight fit. Methods for producing and applying such an insulating cover are also provided.Type: GrantFiled: January 24, 2007Date of Patent: June 21, 2011Assignee: Alstom Technology LtdInventors: Matthias Baenziger, Christian Bencharab, Christophe Cottet, Bruno Frattini, Werner Ladstaetter, Francesco Stallone, Michel Claude Verrier
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Publication number: 20100066202Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.Type: ApplicationFiled: November 2, 2009Publication date: March 18, 2010Inventors: Daniel Hediger, Francesco Stallone
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Publication number: 20090297290Abstract: A nut locking system made from non-metallic components, so as to be suitable for use in a high voltage generator that can easily be fitted and changed, includes a threaded shaft (10) and a nut (20) having at least one flat face (14) extending along the shaft (10), at least one slot (22) extending through the top surface of the nut (26), and a fastening device (30) for locking the nut (20) so as to prevent the rotational movement of the nut (20). The slots (22) and the faces (14) are such that when the nut (20) is threaded onto the shaft (10), at least one face (14) is alignable with at least one slot (22) so as to enable the fitting of a fastening device (30) through at least one of the slots (22), thereby locking the nut.Type: ApplicationFiled: May 20, 2009Publication date: December 3, 2009Inventors: DANIEL HEDIGER, FRANCESCO STALLONE, ARDIAN MILAZIMI
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Patent number: 7567008Abstract: A rotating electrical machine (10) has a rotor (11), which rotates about an axis (13) and is surrounded concentrically by a stator (12) having a stator winding (30) inserted into a stator body (21), the stator winding (30) including, in a concentric arrangement, a lower layer (16), which is more remote from the axis, and an upper layer (17), which is closer to the axis, of axially extending winding bars (14), which emerge from the stator body (21) at the ends of the stator (12) and are arranged, within an end winding (15), with their bar ends (23), on two concentric circles in pairs one above the other in the radial direction. With such a machine, simplified production of the stator winding (30) with, at the same time, a high dielectric strength is achieved by virtue of the fact that in those winding bars (14) of a pair which belong to different phases within a phase segregation, radial spreading (18) of the bar ends (23) is provided so as to increase the radial distance between the different phases.Type: GrantFiled: January 16, 2007Date of Patent: July 28, 2009Assignee: ALSTOM Technology Ltd.Inventors: Matthias Baenziger, Werner Ladstaetter, Francesco Stallone
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Patent number: 7489058Abstract: In a connection arrangement (10) for the stator winding of a turbo machine with two or more parallel circuits of individual conductors (26, 29) per phase, the individual conductors belonging to one phase form a phase group (25, 28) and run directly adjacent to one another in the stator body, the individual conductors of the winding are each connected from a winding connection (21, . . . , 24) to an external connection (15, . . . , 20) via a phase ring (32), which runs concentrically with respect to the machine axis (33). A simplification of the manufacture and assembly as well as a reduction in space requirements and an improvement in the thermal properties are achieved by the phase rings (32) of a phase group each being led together as a phase ring group (11, . . . , 14) from the winding connections (21, . . . , 24) to the external connections (15, . . . , 20).Type: GrantFiled: January 19, 2007Date of Patent: February 10, 2009Assignee: ALSTOM Technology Ltd.Inventors: Oliver Drubel, Kevin Mayor, Francesco Stallone
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Patent number: 7368845Abstract: An electric machine with a rotor and a stator, especially an electric motor or a generator, preferably for a power plant, wherein the stator has a winding with several winding bars which, in the area of an axial core face, are each connected via a phase connector bar to a terminal of the stator winding so as to be electrically conductive. Several phase connector bars extend between their ends in a ring segment manner along the circumference of the stator and rest internally and radially on at least one support. Several such supports are distributed along the circumference in the area of the core face. On at least one support, there is a phase connector bar between two stationary axial stops; with its inside, said phase connector bar is axially in contact with the first axial stop or with a spacer, and with its outside, it is axially in contact with the second axial stop or with a spacer.Type: GrantFiled: March 29, 2005Date of Patent: May 6, 2008Assignee: Alstom Technology LtdInventors: Matthias Baenziger, Werner Ladstaetter, Hrvoje Lukacic, Walter Meier, Francesco Stallone
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Publication number: 20080012442Abstract: An insulating cover or a bar-to-bar connection of a stator winding of an electric machine has only one opening and is made from a flexible insulating material embedding the bar-to-bar connection entirely in a tight fit. Methods for producing and applying such an insulating cover are also provided.Type: ApplicationFiled: January 24, 2007Publication date: January 17, 2008Applicant: Alstom Technology Ltd.Inventors: Matthias Baenziger, Christian Bencharab, Christophe Cottet, Bruno Frattini, Werner Ladstaetter, Francesco Stallone, Michel Verrier
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Publication number: 20070188030Abstract: In a connection arrangement (10) for the stator winding of a turbo machine with two or more parallel circuits of individual conductors (26, 29) per phase, the individual conductors belonging to one phase form a phase group (25, 28) and run directly adjacent to one another in the stator body, the individual conductors of the winding are each connected from a winding connection (21, . . . , 24) to an external connection (15, . . . , 20) via a phase ring (32), which runs concentrically with respect to the machine axis (33). A simplification of the manufacture and assembly as well as a reduction in space requirements and an improvement in the thermal properties are achieved by the phase rings (32) of a phase group each being led together as a phase ring group (11, . . . , 14) from the winding connections (21, . . . , 24) to the external connections (15, . . . , 20).Type: ApplicationFiled: January 19, 2007Publication date: August 16, 2007Inventors: Oliver Drubel, Kevin Mayor, Francesco Stallone
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Publication number: 20070170793Abstract: A rotating electrical machine (10) has a rotor (11), which rotates about an axis (13) and is surrounded concentrically by a stator (12) having a stator winding (30) inserted into a stator body (21), the stator winding (30) including, in a concentric arrangement, a lower layer (16), which is more remote from the axis, and an upper layer (17), which is closer to the axis, of axially extending winding bars (14), which emerge from the stator body (21) at the ends of the stator (12) and are arranged, within an end winding (15), with their bar ends (23), on two concentric circles in pairs one above the other in the radial direction. With such a machine, simplified production of the stator winding (30) with, at the same time, a high dielectric strength is achieved by virtue of the fact that in those winding bars (14) of a pair which belong to different phases within a phase segregation, radial spreading (18) of the bar ends (23) is provided so as to increase the radial distance between the different phases.Type: ApplicationFiled: January 16, 2007Publication date: July 26, 2007Inventors: Matthias Baenziger, Werner Ladstaetter, Francesco Stallone
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Publication number: 20060181165Abstract: An electric machine with a rotor and a stator, especially an electric motor or a generator, preferably for a power plant, wherein the stator has a winding with several winding bars which, in the area of an axial core face, are each connected via a phase connector bar to a terminal of the stator winding so as to be electrically conductive. Several phase connector bars extend between their ends in a ring segment manner along the circumference of the stator and rest internally and radially on at least one support. Several such supports are distributed along the circumference in the area of the core face. On at least one support, there is a phase connector bar between two stationary axial stops; with its inside, said phase connector bar is axially in contact with the first axial stop or with a spacer, and with its outside, it is axially in contact with the second axial stop or with a spacer.Type: ApplicationFiled: March 29, 2005Publication date: August 17, 2006Applicant: ALSTOM Technology LtdInventors: Matthias Baenziger, Werner Ladstaetter, Hrvoje Lukacic, Walter Meier, Francesco Stallone
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Patent number: 6965184Abstract: An apparatus (10) for supporting a winding (7) on a stator (1), in particular on a generator stator in a power station. The winding (7) has an end winding (9) which is supported axially on the core (2) of the stator (1) via winding supports (11) of the supporting apparatus (10). The winding supports (11) are supported on the end winding (9) via a stressing device (22), at right angles to an envelope surface (21). In order to improve the axial position between the winding support (11) and the end winding (9) during operation of the stator (1), a coupling device (23) is provided which allows relative movements between the end winding (9) and the winding support (11) in the circumferential direction and at right angles to the envelope surface (21), and prevents such relative movements in an envelope line direction (30).Type: GrantFiled: July 6, 2004Date of Patent: November 15, 2005Assignee: Alstom Technology Ltd.Inventors: Daniel Hediger, Hrvoje Lukacic, Duncan Madle, Francesco Stallone, Alfred Ziegler
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Patent number: 6911761Abstract: A horizontal-axis electrical machine has an built-in stator concentrically surrounded by a number of parallel retaining rings that spaced apart from one another in the axial direction and are connected on their outer circumference on opposing sides in each case by means of retaining structures to a base frame which extends in the axial direction. A horizontally acting spring, which has the form of a perpendicular, longitudinal plate, is fixed on the one hand with its ends to the associated retaining ring, and is firmly connected on the other hand with its freely flexible central part to the base frame by means of connecting elements, being provided within each of the retaining structures. Improved oscillation isolation between the built-in stator and the base frame is achieved in such an electrical machine by vertically acting spring elements disposed between the ends of the spring and the associated retaining ring.Type: GrantFiled: June 17, 2004Date of Patent: June 28, 2005Assignee: Alstom Technology Ltd.Inventors: Not-Curdin Fried, Daniel Hediger, Nicola Merlini, René Meylan, Francesco Stallone