Patents by Inventor Julien Masfaraud

Julien Masfaraud 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).

  • Patent number: 8754561
    Abstract: A rotor with poles in the form of claws, of a rotary electrical machine. This rotor comprises a plurality of interpolar magnetic assemblies. On a radial cross-sectional plane, a first total magnet surface of a section of the magnetic assembly is smaller than a second surface defined by the product of the radial height of a face (h) of the magnetic assembly (40) which faces towards the polar claw (44a), and the circumferential distance between the polar claws (44a, 44b) in the interpolar gap. The magnet has at least one recess which extends in an axial direction.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: June 17, 2014
    Assignee: Valeo Equipements Electriques Moteur
    Inventor: Julien Masfaraud
  • Patent number: 8497588
    Abstract: The invention relates to a method for controlling a reversible electrical machine (14) coupled to a heat engine (13). The electrical machine comprises a field winding (20) which is fed by an excitation current and an armature comprising a plurality of phase windings (22) fed by phase currents. According to the invention, the excitation current of the electrical machine is controlled according to the instantaneous rotational speed of the machine and the torque of the heat engine. According to other characteristics, the excitation current is equal to a pre-determined nominal current when the torque of the engine is resistant and the instantaneous speed is slower than a first pre-determined rotational speed, and is weaker than the nominal current when the torque of the engine is driving or the instantaneous speed is faster than the first speed.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: July 30, 2013
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Hugues Doffin, Oussama Rouis, Julien Masfaraud
  • Patent number: 8475328
    Abstract: The micro-hybrid system for a transport vehicle comprises a rotary electric machine suitable for being coupled mechanically to an engine of the vehicle, an AC-to-DC converter, a DC-to-DC converter, first and second electrical energy reservoirs suitable for storing an electrical energy produced by the rotary machine and for returning the electrical energy to consumer devices equipping the vehicle, and a controller for controlling the operation of the micro-hybrid system. The controller comprises piloting strategies module suitable for autonomously piloting the operating modes of the micro-hybrid system according to a plurality of strategies depending on information provided to said piloting means regarding an internal state of the micro-hybrid system and of a state of the vehicle.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: July 2, 2013
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Oussama Rouis, Farouk Boudjemai, Brice Lecole, Julien Masfaraud, Magali Laurence, Mattieu Treguer, Hugues Doffin, Cedric Leboeuf, Ertugrul Taspinar, Paul Armiroli, Alain Gerard, Jean-Marc Dubus, Arnaud De Vries, Eric Blanc
  • Patent number: 8359863
    Abstract: A micro-hybrid system (27) is connected to an on-board electrical network (V+) of a first heat engine (28) of a vehicle, whereby the first heat engine having a first cubic capacity which is greater than or equal to a first predetermined value. The system (27) comprises a number equal to two or more of identical starter-alternator devices (1) which are mechanically coupled to the first heat engine (28). The torque and power characteristics of each of the starter-alternator devices (1, 16), while not being adapted to the first heat engine (28), are adapted to a second heat engine having a second cubic capacity which is less than or equal to a second predetermined value equal to a fraction of the first predetermined value. The system is adapted to an application to large heat engines and allows a certain degree of standardization of starter-alternator devices.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: January 29, 2013
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Paul Armiroli, Jean-Claude Matt, Farouk Boudjemai, Julien Masfaraud
  • Patent number: 8362664
    Abstract: The disclosure relates to a rotating electrical machine (1), in particular an alternator or an alternator-starter for a motor vehicle. At least one bearing mount (48) is provided with at least one opening (49) opening onto the exterior of the bearing mount. A stator (16) comprising an electric coil (18) is provided. This coil includes a plurality of electric conductors, at least one of which includes an end forming an electrical neutral point of the coil. The machine further includes an electrical insulation member (70) configured to prevent any contact between the bearing mount (48) and said neutral point-forming conductor end. The insulation member extends at least partially through the opening of the bearing mount and is at least partially outside the bearing mount. The electrical insulation member being furthermore configured to rest at least partially on an outer surface (71) of the bearing mount.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: January 29, 2013
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Khadija El Baraka, Sveltislav Jugovic, Michel Fakes, Ryadh Ben Omrane, Julien Masfaraud, Denis Even, Denis Bodin
  • Patent number: 8336607
    Abstract: The invention concerns an electric power supply device (10) for a motor vehicle, which is mounted in the motor vehicle and is designed to connect at least one electrical machine (12) capable of operating as an electric engine and/or an electric generator, to a battery (16) of the vehicle, comprising a single housing (32) including cooling means and having a lower part (34) forming a box for receiving at least one electric power storage unit (20).
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: December 25, 2012
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Roger Abadia, Daniel Richard, Hugues Doffin, Julien Masfaraud, Richard Tellier, Matthieu Treguer, Ertugrul Taspinar, Christophe Picod
  • Patent number: 8115432
    Abstract: A triphase rotating electric machine includes three coils evenly distributed around a rotational axes of the machine, and at least one first sensor, capable of generating a periodic signal to represent the position of the machine around the axle and a control circuit capable of controlling, when in the first mode, the conduction of a switch (KUH), linked to at least one of the three coils based on the periodic signal generated by the first sensor (U), such that the conduction phases of the switch (KUH) have a duration in the order of half the signal period (U). The control circuit is capable of controlling switch (KUH), based on a second mode in which the conduction phases of the switch (KUH) have a duration in the order of a third of the signal period (U).
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: February 14, 2012
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Hugues Doffin, Farouk Boudjemai, Ertugrul Taspinar, Julien Masfaraud
  • Patent number: 8092338
    Abstract: Method for recovering electrical energy in a vehicle with regenerative braking is used in a vehicle equipped for this purpose with an electrical capacitance device to store electrical energy supplied by a rotary electrical machine of the vehicle during regenerative braking operation. A choice is made, on the basis of the initial rotational speed of the rotary electrical machine to apply an energy recovery stratagem from at least the following two: —a first energy recovery strategy that favors high power supplied by the rotary electrical machine; and—a second energy recovery strategy that favors high efficiency of the rotary electrical machine.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: January 10, 2012
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Julien Masfaraud, Hugues Doffin
  • Patent number: 7999497
    Abstract: A device for controlling a polyphase rotating machine comprising a stator, a rotor, and sensors, the device being capable of receiving at least one first sensing signal (V, W, U) representing a position of the rotor relative to the stator and outputted from a first sensor (16; 18; 14), and a second sensing signal representing the position and phase-shifted relative to the first signal (V, W, U). The second signal is outputted from a second sensor. The control device comprises: means (K, R) for combining the first and the second sensing signals (U, V, W) into a combined signal (Ku; Kv; Kw) including at least one controlled switching signal with a variable cyclic ratio. The combined signal (Ku; Kv; Kw) is based on the cyclic ratio and enables the machine to be controlled.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: August 16, 2011
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Julien Masfaraud, Hugues Doffin, Farouk Boudjemai
  • Patent number: 7999518
    Abstract: A method for managing a power supply system with a variable voltage comprising the following steps: according to an instantaneous rotational speed of a rotating electrical machine, a power supply system output voltage with a variable voltage is set to an optimum output voltage between first and second service voltages in such a way as to maximize the electric power delivered by the electrical machine to an energy storage system; when the instantaneous rotational speed is slower than the nominal rotational speed, the output voltage is set to a first value which is substantially equal to the first service voltage in such a way as to maximize the yield of the transfer of energy from the electrical machine to a load; and when the instantaneous rotational speed is faster than the nominal rotational speed, the output voltage (U) is set to a second value substantially equal to the second service voltage in such a way as to maximize the yield of the transfer of energy from the electrical machine towards the load.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: August 16, 2011
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Hugues Doffin, Farouk Boudjemai, Julien Masfaraud
  • Publication number: 20110186365
    Abstract: The invention concerns an electric power supply device (10) for a motor vehicle, which is mounted in the motor vehicle and is designed to connect at least one electrical machine (12) capable of operating as an electric engine and/or an electric generator, to a battery (16) of the vehicle, comprising a single housing (32) including cooling means and having a lower part (34) forming a box for receiving at least one electric power storage unit (20).
    Type: Application
    Filed: September 13, 2006
    Publication date: August 4, 2011
    Inventors: Roger Abadia, Daniel Richard, Hugues Doffin, Julien Masfaraud, Richard Tellier, Matthieu Treguer, Ertugrul Taspinar, Christophe Picod
  • Publication number: 20110127873
    Abstract: A rotor with poles in the form of claws, of a rotary electrical machine. This rotor comprises a plurality of interpolar magnetic assemblies. On a radial cross-sectional plane, a first total magnet surface of a section of the magnetic assembly is smaller than a second surface defined by the product of the radial height of a face (h) of the magnetic assembly (40) which faces towards the polar claw (44a), and the circumferential distance between the polar claws (44a, 44b) in the interpolar gap. The magnet has at least one recess which extends in an axial direction.
    Type: Application
    Filed: May 26, 2009
    Publication date: June 2, 2011
    Inventor: Julien Masfaraud
  • Patent number: 7923952
    Abstract: A device for controlling a polyphase rotating machine, the machine comprising a stator, a rotor, and sensors, the device being capable of receiving: at least one first sensing signal (U; V; W) representing a position of the rotor relative to the stator and output by a first sensor; and a second sensing signal (V; W; U) representing the position and phase-shifted relative to the first signal and output by a second sensor. The control device comprises: means (K, R) for combining the first and second sensing signals into a combined signal, the means including at least one controlled switching element capable adopting at least in two states, the combined signal being based on a state of the first element and enabling the machine to be controlled.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: April 12, 2011
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Julien Masfaraud, Hugues Doffin, Farouk Boudjemai
  • Patent number: 7923949
    Abstract: A method for controlling a reversible polyphase rotating electrical machine, wherein at least one coil circuit is supplied through a bridge of switches, including the following steps: controlling (P1) the bridge to deliver to the coil circuit a periodic voltage with a phase shift (d) relative to an electromotive force induced in the coil circuit, such that an operating torque is generated, the phase shift having initially a first value (d0); controlling (P2) the bridge to deliver to the coil circuit a periodic voltage with the phase shift (d) producing a torque ranging between the operating torque and the opposite of the operating torque, the phase shift taking on a plurality of values upon the control; flipping (T2) the bridge in rectifying mode.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: April 12, 2011
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Julien Masfaraud, Hugues Doffin, Farouk Boudjemai
  • Patent number: 7911166
    Abstract: A machine comprising a rotor, a stator (12), a control bridge (10) with controlled switches, and a control device (20, 30) supplying control signals (C) to the control bridge (10), wherein the control device comprises means (30) for applying to at least one switch of the control bridge a control signal with a phase-lead relative to a signal representing the position of the rotor relative to the stator. According to the invention, the applying means comprise means (30) for adjusting the phase lead (d) from a plurality of values for a given rotational speed of the rotor.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: March 22, 2011
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Julien Masfaraud, Hugues Doffin, Farouk Boudjemai
  • Publication number: 20100295300
    Abstract: The invention relates to a method for controlling a reversible electrical machine (14) coupled to a heat engine (13). The electrical machine comprises a field winding (18) which is fed by an excitation current and an armature comprising a plurality of phase windings (22) fed by phase currents. According to the invention, the excitation current of the electrical machine is controlled according to the instantaneous rotational speed of the machine and the torque of the heat engine. According to other characteristics, the excitation current is equal to a pre-determined nominal current when the torque of the engine is resistant and the instantaneous speed is slower than a first pre-determined rotational speed, and is weaker than the nominal current when the torque of the engine is driving or the instantaneous speed is faster than the first speed.
    Type: Application
    Filed: May 3, 2007
    Publication date: November 25, 2010
    Applicant: VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
    Inventors: Hugues Doffin, Oussama Rouis, Julien Masfaraud
  • Publication number: 20100298088
    Abstract: The micro-hybrid system for a transport vehicle comprises a rotary electric machine (10) suitable for being coupled mechanically to an engine (5) of the vehicle, an AC-to-DC converter (11), a DC-to-DC converter (13), first (12) and second (2) electrical energy reservoirs suitable for storing an electrical energy produced by the rotary machine and for restoring the latter for consumer devices equipping the vehicle, and control means (14) for controlling the operation of the micro-hybrid system. In accordance with the invention, the control means (14) comprise piloting means (140) suitable for autonomously piloting the operating modes of the micro-hybrid system according to a plurality of strategies according to at least their own knowledge of an internal state of the micro-hybrid system and of a state of the vehicle.
    Type: Application
    Filed: May 4, 2007
    Publication date: November 25, 2010
    Inventors: Oussama Rouis, Farouk Boudjemai, Brice Lecole, Julien Masfaraud, Magali Laurence, Matthieu Treguer, Hugues Doffin, Cedric Leboeuf, Ertugrul Taspinar, Paul Armiroli, Alain Gerard, Jean-Marc Dubus, Arnaud De Vries, Eric Blanc
  • Publication number: 20100234170
    Abstract: Method for recovering electrical energy in a vehicle with regenerative braking is used in a vehicle equipped for this purpose with an electrical capacitance device to store electrical energy supplied by a rotary electrical machine of the vehicle during regenerative braking operation. A choice is made, on the basis of the initial rotational speed of the rotary electrical machine to apply an energy recovery stratagem from at least the following two: —a first energy recovery strategy that favors high power supplied by the rotary electrical machine; and—a second energy recovery strategy that favors high efficiency of the rotary electrical machine.
    Type: Application
    Filed: June 4, 2007
    Publication date: September 16, 2010
    Inventors: Julien Masfaraud, Hugues Doffin
  • Publication number: 20100231152
    Abstract: A triphase rotating electric machine includes three coils evenly distributed around a rotational axes of the machine, and at least one first sensor, capable of generating a periodic signal to represent the position of the machine around the axle and a control circuit capable of controlling, when in the first mode, the conduction of a switch (KUH), linked to at least one of the three coils based on the periodic signal generated by the first sensor (U), such that the conduction phases of the switch (KUH) have a duration in the order of half the signal period (U). The control circuit is capable of controlling the switch (KUH), based on a second mode in which the conduction phases of the switch (KUH) have a duration in the order of a third of the signal period (U).
    Type: Application
    Filed: May 10, 2007
    Publication date: September 16, 2010
    Inventors: Hugues Doffin, Farouk Boudjemai, Ertugrul Taspinar, Julien Masfaraud
  • Publication number: 20100225257
    Abstract: A device for controlling a polyphase rotating machine comprising a stator, a rotor, and sensors, the device being capable of receiving at least one first sensing signal (V, W, U) representing a position of the rotor relative to the stator and outputted from a first sensor (16; 18; 14), and a second sensing signal representing the position and phase-shifted relative to the first signal (V, W, U). The second signal is outputted from a second sensor. The control device comprises: means (K, R) for combining the first and the second sensing signals (U, V, W) into a combined signal (Ku; Kv; Kw) including at least one controlled switching signal with a variable cyclic ratio. The combined signal (Ku; Kv; Kw) is based on the cyclic ratio and enables the machine to be controlled.
    Type: Application
    Filed: January 17, 2007
    Publication date: September 9, 2010
    Inventors: Julien Masfaraud, Hugues Doffin, Farouk Boudjemai