Patents by Inventor Samuel Cregut
Samuel Cregut 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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Publication number: 20220399618Abstract: A system for protecting a device having variable internal resistance includes a protection fuse capable of blowing when a current having an intensity greater than an intensity threshold passes through. The system also includes an estimator suitable for estimating the internal resistance of the device, and a safety device suitable for limiting and/or preventing use of the device when the internal resistance is greater than a resistance threshold beyond which the protection fuse is inoperative.Type: ApplicationFiled: September 8, 2020Publication date: December 15, 2022Applicant: RENAULT s.a.s.Inventors: Samuel CREGUT, Masato ORIGUCHI, Irina MARINCAS, Antoine SAINT-MARCOUX
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Patent number: 10113473Abstract: A cooling system for an electrically driven motor vehicle, including a central computing unit, a cooling circuit including at least a pump for circulation of a coolant fluid, a solenoid valve, and a radiator. The cooling circuit is configured for cooling a battery charger and an electrical motor connected to an electronic control device. The central computing unit is configured to manage activation of each pump, including potential faults of each of the pumps.Type: GrantFiled: July 3, 2012Date of Patent: October 30, 2018Assignee: RENAULT s.a.s.Inventors: Hatem Cherouat, Samuel Cregut
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Patent number: 9738166Abstract: A method for contactless charging of a battery of an electric motor vehicle by magnetic induction using a transmitter coil of a charging device and a receiver coil of the vehicle, the method including: controlling electrical power supply and instructions of an inverter at terminals of which the transmitter coil is connected, according to a variable frequency; measuring, in an analog circuit, at least one analog signal relative to a current or to a voltage at terminals of the transmitter coil; digitally processing at least two incoming digital signals by a control board, a first incoming signal being relative to the voltage and a second incoming signal being relative to the current; transmitting output signals from the control board to the inverter to lock the inverter to a value of a phase difference calculated between the current and the voltage.Type: GrantFiled: March 5, 2013Date of Patent: August 22, 2017Assignee: RENAULT s.a.s.Inventors: Hugues Doffin, Samuel Cregut
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Patent number: 9517700Abstract: A method for contactless charging of the battery of an electric automobile by magnetic induction using a transmitter coil of a charging device and a receiver coil of the vehicle, the method including: controlling a power supply of a converter, at terminals of which the transmitter coil is connected, according to a variable frequency; measuring, in an analog circuit, a value of a current and of a voltage at the terminals of the transmission coil; calculating a phase shift between the current and the voltage; converting the phase shift into a digital value; and locking the variable frequency of the converter to the phase-shift value by digital processing.Type: GrantFiled: December 4, 2012Date of Patent: December 13, 2016Assignee: RENAULT S.A.S.Inventors: Jeanne Houivet, Samuel Cregut
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Patent number: 9410473Abstract: A cooling device for a motor vehicle, including a cooling circuit configured to cool an engine assembly using a liquid coolant circulated by at least one variable delivery pump, the delivery output by each pump being controlled by a control system. The control system is configured to regulate the delivery of each pump so that the temperature of the liquid coolant does not exceed a fixed datum temperature.Type: GrantFiled: October 14, 2010Date of Patent: August 9, 2016Assignee: RENAULT S.A.S.Inventors: Samuel Cregut, Marco Marsilia
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Patent number: 9160268Abstract: A system for controlling a voltage inverter, or supplying power to a multiphase electric motor of an automobile vehicle, including: a mechanism generating values of power supply voltages for each phase of the electric motor, together with an amplitude value of the power supply voltages; a phase-splicing determination mechanism; and a controller controlling the phase splicing cooperating to control transmission to the voltage inverter of duty cycles generated by determining the duty cycles, as a function of values of power supply voltages for each phase of the electric motor, and also of the amplitude value of the power supply voltages.Type: GrantFiled: November 23, 2011Date of Patent: October 13, 2015Assignee: RENAULT s.a.sInventors: Samuel Cregut, Marco Marsilia
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Publication number: 20150239353Abstract: A method for controlling charging of a battery of an electric drive motor vehicle or a hybrid motor vehicle, in a non-contact charging system wherein a power generator including a direct current source followed by an inverter feeds a load including an inductor arranged in series with the inverter, the method including: controlling the inverter at a working frequency slaved to a load resonance frequency by transmission of first and second pulse-width modulation command signals respectively to first and second switching arms of the inverter; and performing a closed-loop regulation on an intensity of a supply current of the inverter, a supply current set value being defined according to a maximum current that can be supplied by the direct current source.Type: ApplicationFiled: June 11, 2013Publication date: August 27, 2015Applicant: RENAULT s.a.s.Inventor: Samuel Cregut
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Publication number: 20150048788Abstract: A method for contactless charging of a battery of an electric motor vehicle by magnetic induction using a transmitter coil of a charging device and a receiver coil of the vehicle, the method including: controlling electrical power supply and instructions of an inverter at terminals of which the transmitter coil is connected, according to a variable frequency; measuring, in an analog circuit, at least one analog signal relative to a current or to a voltage at terminals of the transmitter coil; digitally processing at least two incoming digital signals by a control board, a first incoming signal being relative to the voltage and a second incoming signal being relative to the current; transmitting output signals from the control board to the inverter to lock the inverter to a value of a phase difference calculated between the current and the voltage.Type: ApplicationFiled: March 5, 2013Publication date: February 19, 2015Applicant: RENAULT s.a.s.Inventors: Hugues Doffin, Samuel Cregut
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Patent number: 8919471Abstract: A cooling device for a motor vehicle, including a cooling circuit configured to cool an engine assembly using a liquid coolant circulated by at least one variable-flowrate pump, the flowrate of each pump being controlled by a control system. The control system is configured to control the flowrate of each pump in a closed-loop regulating system as a function of the temperature of the liquid coolant and of a setpoint temperature.Type: GrantFiled: April 9, 2010Date of Patent: December 30, 2014Assignee: Renault S.A.S.Inventors: Claire Oberti, Marco Marsilia, Samuel Cregut
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Publication number: 20140327397Abstract: A method for contactless charging of the battery of an electric automobile by magnetic induction using a transmitter coil of a charging device and a receiver coil of the vehicle, the method including: controlling a power supply of a converter, at terminals of which the transmitter coil is connected, according to a variable frequency; measuring, in an analog circuit, a value of a current and of a voltage at the terminals of the transmission coil; calculating a phase shift between the current and the voltage; converting the phase shift into a digital value; and locking the variable frequency of the converter to the phase-shift value by digital processing.Type: ApplicationFiled: December 4, 2012Publication date: November 6, 2014Applicant: RENAULT s.a.s.Inventors: Jeanne Houivet, Samuel Cregut
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Publication number: 20140216682Abstract: A cooling system for an electrically driven motor vehicle, including a central computing unit, a cooling circuit including at least a pump for circulation of a coolant fluid, a solenoid valve, and a radiator. The cooling circuit is configured for cooling a battery charger and an electrical motor connected to an electronic control device. The central computing unit is configured to manage activation of each pump, including potential faults of each of the pumps.Type: ApplicationFiled: July 3, 2012Publication date: August 7, 2014Applicant: RENAULT s.a.s.Inventors: Hatem Cherouat, Samuel Cregut
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Patent number: 8733299Abstract: A cooling device for an automotive vehicle of electric type, the cooling device being able to be powered up or powered down and including a cooling circuit capable of cooling an engine assembly including an electronic driver system using a coolant, the cooling circuit being controlled by a control system capable of keeping the device powered up when the vehicle is at end of mission and the temperature of the coolant is above a threshold temperature. The electric vehicle includes a battery charger assembly, and the cooling circuit is capable of cooling the charger assembly and the engine assembly.Type: GrantFiled: April 9, 2010Date of Patent: May 27, 2014Assignee: Renault S.A.S.Inventors: Samuel Cregut, Claire Oberti, Marco Marsilia
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Publication number: 20140132188Abstract: A system for controlling a voltage inverter, or supplying power to a multiphase electric motor of an automobile vehicle, including: a mechanism generating values of power supply voltages for each phase of the electric motor, together with an amplitude value of the power supply voltages; a phase-splicing determination mechanism; and a controller controlling the phase splicing cooperating to control transmission to the voltage inverter of duty cycles generated by determining the duty cycles, as a function of values of power supply voltages for each phase of the electric motor, and also of the amplitude value of the power supply voltages.Type: ApplicationFiled: November 23, 2011Publication date: May 15, 2014Applicant: RENAULT S.A.S.Inventors: Samuel Cregut, Marco Marsilia
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Publication number: 20130313249Abstract: Method for regulating the temperature of an automotive vehicle component comprising an inductive system for charging an electric battery, the inductive charging system including a coil allowing a magnetic energy to be converted into an electrical energy for charging the battery, the method involving a step of using the thermal energy produced in the coil via the Joule effect to heat the automotive vehicle component, notably a cabin of an automotive vehicle.Type: ApplicationFiled: December 20, 2011Publication date: November 28, 2013Applicant: Renault S.A.S.Inventors: Samuel Cregut, Serge Loudot
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Publication number: 20130056194Abstract: A cooling device for a motor vehicle, including a cooling circuit configured to cool an engine assembly using a liquid coolant circulated by at least one variable delivery pump, the delivery output by each pump being controlled by a control system. The control system is configured to regulate the delivery of each pump so that the temperature of the liquid coolant does not exceed a fixed datum temperature.Type: ApplicationFiled: October 14, 2010Publication date: March 7, 2013Applicant: Renault S.A.S.Inventors: Samuel Cregut, Marco Marsilia
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Publication number: 20120132394Abstract: A cooling device for a motor vehicle, including a cooling circuit configured to cool an engine assembly using a liquid coolant circulated by at least one variable-flowrate pump, the flowrate of each pump being controlled by a control system. The control system is configured to control the flowrate of each pump in a closed-loop regulating system as a function of the temperature of the liquid coolant and of a setpoint temperature.Type: ApplicationFiled: April 9, 2010Publication date: May 31, 2012Applicant: Renault S.A.SInventors: Claire Oberti, Marco Marsilia, Samuel Cregut
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Publication number: 20120067562Abstract: A cooling device for an automotive vehicle of electric type, the cooling device being able to be powered up or powered down and including a cooling circuit capable of cooling an engine assembly including an electronic driver system using a coolant, the cooling circuit being controlled by a control system capable of keeping the device powered up when the vehicle is at end of mission and the temperature of the coolant is above a threshold temperature. The electric vehicle includes a battery charger assembly, and the cooling circuit is capable of cooling the charger assembly and the engine assembly.Type: ApplicationFiled: April 9, 2010Publication date: March 22, 2012Applicant: RENAULT S.A.S.Inventors: Samuel Cregut, Claire Oberti, Marco Marsilia