Patents by Inventor Christophe Creusot
Christophe Creusot 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: 10998710Abstract: The invention proposes a high-voltage direct current cut-off device, comprising: in series, a cut-off device and a current limiter; an accumulation line in parallel with the current limiter, an oscillating circuit, in parallel with the cut-off apparatus, comprising an oscillation control switch and having an inductance wherein the accumulation line includes at least two accumulation capacitors, and in that the oscillation line extends from a branch connection point of the accumulation line situated between the two accumulation capacitors, determining a secondary segment of the accumulation line connected to the main conduction line between the current limiter and the main cut-off apparatus so as to form part of the oscillating circuit.Type: GrantFiled: January 15, 2018Date of Patent: May 4, 2021Assignee: SUPERGRID INSTITUTEInventors: Pierre Legendre, Raphaël Chassagnoux, Christophe Creusot, Philippe Guuinic
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Publication number: 20200127453Abstract: A DC high-voltage electrical installation comprises a switching device for switching an electric current in the main circuit, and a method for controlling the closure of a switching device in such an installation. The installation includes a controlled variable resistor system making it possible to modify the resistance value of the resistor system seen by the current flowing through the main electrical circuit. The resistance value takes at least three distinct values: high, a lower value, and at least one nonzero intermediate value comprised between the high value and the low value. The installation includes a coordination device making it possible to control switching times of the resistance values of the resistor system.Type: ApplicationFiled: December 20, 2017Publication date: April 23, 2020Inventors: Christophe CREUSOT, Issam AIT BRAHIM, Alberto BERTINATO, Dieynaba Sakiliba LOUME
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Publication number: 20200006933Abstract: The invention proposes a high-voltage direct current cut-off device, comprising: in series, a cut-off device and a current limiter; an accumulation line in parallel with the current limiter, an oscillating circuit, in parallel with the cut-off apparatus, comprising an oscillation control switch and having an inductance wherein the accumulation line includes at least two accumulation capacitors, and in that the oscillation line extends from a branch connection point of the accumulation line situated between the two accumulation capacitors, determining a secondary segment of the accumulation line connected to the main conduction line between the current limiter and the main cut-off apparatus so as to form part of the oscillating circuit.Type: ApplicationFiled: January 15, 2018Publication date: January 2, 2020Inventors: Pierre LEGENDRE, Raphaël CHASSAGNOUX, Christophe CREUSOT, Philippe GUUINIC
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Patent number: 10468873Abstract: A current-breaking device for high-voltage direct current includes a main conduction-line and a secondary conduction-line connected in parallel between its terminals. The main conduction-line comprises a first controlled-switch and a circuit connected in series. The circuit comprises a first current-limiter and a first capacitor connected in parallel. The secondary conduction-line comprises a second controlled-switch. These conduction lines cooperate to form an oscillating circuit that oscillates with an amplitude that is at least equal to limiting current passing through the current limiter.Type: GrantFiled: December 2, 2015Date of Patent: November 5, 2019Assignee: SUPERGRID INSTITUTEInventors: Bruno Luscan, Alberto Bertinato, Christophe Creusot
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Publication number: 20180331531Abstract: The invention relates to circuit breaker apparatus for a high- or medium-voltage direct current network, the circuit breaker apparatus comprising a branch (A-A?) with a mechanical circuit breaker (S1) inserted in the network line, and, connected in parallel therewith, firstly a lightning arrestor (5) branch, and secondly a series connection of a first capacitor bank (C), a make switch (S2), and an inductor. According to the invention, the circuit breaker apparatus includes at least one resistive voltage divider (Rs) connected to the network voltage and presenting a low voltage stage (R1s) connected in parallel with the capacitor bank (C) in order to charge the capacitor bank.Type: ApplicationFiled: November 16, 2016Publication date: November 15, 2018Inventors: Christophe CREUSOT, Alain GIRODET, Michel MERMET GUYENNET, Alberto BERTINATO
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Publication number: 20170365998Abstract: A current-breaking device for high-voltage direct current includes a main conduction-line and a secondary conduction-line connected in parallel between its terminals. The main conduction-line comprises a first controlled-switch and a circuit connected in series. The circuit comprises a first current-limiter and a first capacitor connected in parallel. The secondary conduction-line comprises a second controlled-switch. These conduction lines cooperate to form an oscillating circuit that oscillates with an amplitude that is at least equal to limiting current passing through the current limiter.Type: ApplicationFiled: December 2, 2015Publication date: December 21, 2017Inventors: Bruno Luscan, Alberto Bertinato, Christophe Creusot
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Patent number: 9837801Abstract: The present invention provides medium- or high-voltage equipment including a leaktight enclosure in which there are located electrical components and a gas mixture for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, the gas mixture comprising heptafluoroisobutyronitrile, carbon dioxide, and oxygen in small quantities. Electrical components covered in a solid dielectric layer of varying thickness are located inside said leaktight enclosure of the equipment of the invention.Type: GrantFiled: September 17, 2014Date of Patent: December 5, 2017Assignee: ALSTOM TECHNOLOGY LTDInventors: Yannick Kieffel, Alain Girodet, Christophe Creusot, Jacques Porte
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Publication number: 20160241004Abstract: The present invention provides medium- or high-voltage equipment including a leaktight enclosure in which there are located electrical components and a gas mixture for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, the gas mixture comprising heptafluoroisobutyronitrile, carbon dioxide, and oxygen in small quantities. Electrical components covered in a solid dielectric layer of varying thickness are located inside said leaktight enclosure of the equipment of the invention.Type: ApplicationFiled: September 17, 2014Publication date: August 18, 2016Inventors: Yannick Kieffel, Alain Girodet, Christophe Creusot, Jacques Porte
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Patent number: 8698033Abstract: An insulating tube (18) located between the main contacts (12b, 14b) and the arcing contacts (12a, 14a) of an interrupting chamber (10) of a high-voltage or medium-voltage circuit-breaker makes it possible to modify the distribution of the equipotential lines (V) during breaking. Thus, it is possible to reduce the electric field on the contacts, and thus to improve the breaking and the dielectric strength in the open position. The insulating tube (18) can also serve for transmitting movement between the contacts (12, 14) for triggering the circuit-breaker.Type: GrantFiled: October 8, 2007Date of Patent: April 15, 2014Assignee: Alstom Technology LtdInventors: Joël Ozil, Christophe Creusot, Jean-Luc Bourgeois, Yannick Kieffel
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Patent number: 8013268Abstract: This invention relates to a circuit breaker (1) for high or medium voltages, of the type having a drive bar (70) coupled to a drive member, and a circuit-breaking chamber (2) facing it and having two contacts (3, 4), each contact (3, 4) including a main contact (30, 40 respectively) and an arcing contact (31, 41 respectively), with one of the two contacts (3) being fixed to a blast or extinguishing nozzle (32). According to the invention, the second contact (4) and the drive bar (70) are joined together by coupling means (6) in such a way that they move together in translation in the same direction, the transmission means (5) being disposed on the side (21) of the chamber (2) that is adjacent to the drive bar (70), and are adapted to transmit the motion of the driven second contact (4) to the first contact (3).Type: GrantFiled: April 14, 2008Date of Patent: September 6, 2011Assignee: Areva T&D SAInventors: Joël Ozil, Christophe Creusot, Jean-Luc Bourgeois, Christian Lindner
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Patent number: 7777149Abstract: In order to reduce the breaking energy of a high-voltage or medium-voltage circuit-breaker, the interrupting chamber (10) contains two contacts (12, 14) mounted to move in opposite directions, actuated via a single device (20, 30). The two contacts (12, 14) are driven in opposite directions by a cylindrical cam (22) having slots (26, 28) that co-operate with fixed rods (32, 42), each of which is connected to a respective one of the contacts (12, 14): the profiles of the slots (26, 28) make it possible to manage the speed and the amplitude of the movement of the second contact (14) relative to the main contact (12) without requiring any complex design.Type: GrantFiled: August 2, 2007Date of Patent: August 17, 2010Assignee: Areva T&D SAInventors: Jean-Luc Bourgeois, Joël Ozil, Christophe Creusot
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Publication number: 20100032411Abstract: An insulating tube (18) located between the main contacts (12b, 14b) and the arcing contacts (12a, 14a) of an interrupting chamber (10) of a high-voltage or medium-voltage circuit-breaker makes it possible to modify the distribution of the equipotential lines (V) during breaking. Thus, it is possible to reduce the electric field on the contacts, and thus to improve the breaking and the dielectric strength in the open position. The insulating tube (18) can also serve for transmitting movement between the contacts (12, 14) for triggering the circuit-breaker.Type: ApplicationFiled: October 8, 2007Publication date: February 11, 2010Applicant: AREVA T&D SAInventors: Joel Ozil, Christophe Creusot, Jean-Luc Bourgeois, Yannick Kieffel
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Patent number: 7642480Abstract: In order to reduce the breaking energy of a high-voltage or medium-voltage circuit-breaker, the interrupting chamber (10) contains two contacts (12, 14) mounted to move in opposite directions, and actuated via a single device (20). The two contacts (12, 14) are surrounded by an insulating casing (18) of tubular shape, coupled in fixed manner to the main contact (12). The contacts (12, 14) are actuated by a device having a lever (24) in which each lever arm is coupled to a link, one of the links (32) being secured to the insulating casing (18) and the other link (34) being secured to the second contact (14). The guiding of the drive tube (18) on the main contacts (12b, 14b) makes it possible to improve breaking by keeping clean gas between said main contacts.Type: GrantFiled: October 9, 2007Date of Patent: January 5, 2010Assignee: Areva T&D SAInventors: Joel Ozil, Christophe Creusot, Jean-Luc Bourgeois, Yannick Kieffel
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Publication number: 20080257866Abstract: This invention relates to a circuit breaker (1) for high or medium voltages, of the type having a drive bar (70) coupled to a drive member, and a circuit-breaking chamber (2) facing it and having two contacts (3, 4), each contact (3, 4) including a main contact (30, 40 respectively) and an arcing contact (31, 41 respectively), with one of the two contacts (3) being fixed to a blast or extinguishing nozzle (32). According to the invention, the second contact (4) and the drive bar (70) are joined together by coupling means (6) in such a way that they move together in translation in the same direction, the transmission means (5) being disposed on the side (21) of the chamber (2) that is adjacent to the drive bar (70), and are adapted to transmit the motion of the driven second contact (4) to the first contact (3).Type: ApplicationFiled: April 14, 2008Publication date: October 23, 2008Applicant: Tour AREVAInventors: Joel Ozil, Christophe Creusot, Jean-Luc Bourgeois, Christian Lindner
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Publication number: 20080083704Abstract: In order to reduce the breaking energy of a high-voltage or medium-voltage circuit-breaker, the interrupting chamber (10) contains two contacts (12, 14) mounted to move in opposite directions, and actuated via a single device (20). The two contacts (12, 14) are surrounded by an insulating casing (18) of tubular shape, coupled in fixed manner to the main contact (12). The contacts (12, 14) are actuated by a device having a lever (24) in which each lever arm is coupled to a link, one of the links (32) being secured to the insulating casing (18) and the other link (34) being secured to the second contact (14). The guiding of the drive tube (18) on the main contacts (12b, 14b) makes it possible to improve breaking by keeping clean gas between said main contacts.Type: ApplicationFiled: October 9, 2007Publication date: April 10, 2008Applicant: AREVA T&D SAInventors: Joel Ozil, Christophe Creusot, Jean-Luc Bourgeois, Yannick Kieffel
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Publication number: 20080078668Abstract: In order to reduce the breaking energy of a high-voltage or medium-voltage circuit-breaker, the interrupting chamber (10) contains two contacts (12, 14) mounted to move in opposite directions, actuated via a single device (20, 30). The two contacts (12, 14) are driven in opposite directions by a cylindrical cam (22) having slots (26, 28) that co-operate with fixed rods (32, 42), each of which is connected to a respective one of the contacts (12, 14): the profiles of the slots (26, 28) make it possible to manage the speed and the amplitude of the movement of the second contact (14) relative to the main contact (12) without requiring any complex design.Type: ApplicationFiled: August 2, 2007Publication date: April 3, 2008Applicant: AREVA T & D SAInventors: Jean-Luc Bourgeois, Joel Ozil, Christophe Creusot