Valeo Equipements Electriques Moteur

Nicolas Labbe

Benoit Dupeux

Stéphane Plaideau

Aurélien Vauquelin

Jean-Paul Yonnet

Jean-Paul Vilain

Jean Sébastien Metral

Pascal Jacquin

Christian Mornieux

José Sanchez

Tarik Alla

Raphaël Andreux

Benoît Baleydier

Bertrand Riou

Philippe Tesson

Yannick Parvery

Noureddine Takorabet

Julien Fontchastagner

Denis Netter

Gaetan Didier

Hamidreza Zandi

Transmitter or receiver resonant circuit for carrying out contactless power transmission via resonant inductive coupling to a receiver or transmitter resonant circuit, comprising a first capacitance and a first winding, the first winding comprising an inductance and a first resistance, the transmitter resonant circuit comprising a second capacitance of value C′ and a second winding, the second winding comprising a second inductance of value L′ and a second resistance of value R′, the transmitter resonant circuit having a natural angular frequency u>2 such that w=1/V(L′×C′) and a natural frequency fsuch that f=w/(2π), characterized in that the value of the second inductance varies in a predetermined manner.

Device for transmitting power contactlessly through resonant inductive coupling for recharging a motor vehicle

The present invention relates to a device () for powering a rotating electrical machine () of a motor vehicle, comprising: &#x2014;an amplifier () capable of being electrically powered by the first electrical energy storage unit () and capable of electrically powering the second electrical energy storage unit (), characterised in that the amplifier () comprises an oscillating circuit (), the oscillating circuit () comprising a capacitance (C) of value C' and an inductive assembly comprising an inductance (L) of value L&#x2032; and a resistance (R) of value R&#x2032;, &#x2014;the oscillating circuit () having a specific angular frequency &#x3c9; such that &#x3c9;=I/&#x221a;(L&#x2032;&#xd7;C&#x2032;) and a natural frequency f such that f=&#x3c9;(2&#x3c0;), and in that the value of the inductance (L) is variable in a predetermined manner, in particular so as to increase an electric current, supplied by the first electrical energy storage unit () to the oscillating circuit (), into an amplified current supplied by the oscillating circuit () to the second electrical energy storage unit ().

Device for supplying power to an electrical machine of a motor vehicle

A starter battery voltage step-up device (LPF) intended to prevent a drop in the battery voltage (Vbat) produced by a current surge in a power circuit of the starter when the starter is powered on. The device comprises a casing of magnetic material (C, YO, CM, CM'), a primary winding circuit (W) intended to be inserted in series in the power circuit, and a short-circuited secondary winding circuit (W), in which the primary winding circuit (W) and/or the secondary winding circuit (W) comprises a winding formed by at least one flat conductor () wound on edge. The invention also relates to the corresponding combination () of a starter and a voltage step-up device.

Starter voltage step-up device and combination of starter and of the voltage step-up device

A rotating electric machine comprising a rotor () comprising a body () on the periphery of which are installed conductors () forming the winding, and a stator () positioned around the rotor () comprising a magnetized structure extending along a circumference of the stator (). The body () of the rotor () is made partially of plastic, in the region of the teeth which conventionally separate the notches near the air gap, on the periphery of the armature. A modified structure of magnets of Halbach type is made with magnets of NdFeB type to reduce the thickness of the stator (), to increase the radius (R) of the rotor () so as to position all the conductors () on the periphery of the body () of the rotor () on one and the same layer at a diameter of maximum value.

Rotating electrical machine, for starter

A machine having a wound rotor () comprising a manifold () that includes a set of blades () and longitudinal notches (). Rotor () also comprises a winding () formed of a set of conductors () that each comprise two arms (), connected together by a base (). The curve, representing the electromotive force (EMF) generated by the rotor () on the basis of the angle of rotation of the rotor, is linear and steep in a switching region, and the notches () are angularly shifted relative to the blades () so that each notch () is located opposite a junction between two blades. The machine may relate to a starter fitted with the machine.

Electrical machine comprising rotor provided with winding facilitating switching, and associated starter

A DC electric rotating machine, such as a starter of an automotive vehicle, includes a stator with salient poles having at least four poles distributed uniformly over the circumference of the stator, a rotor disposed inside the stator, a set of brushes adapted for the electric supply of the rotor, and at least two geometrically opposed salient poles. Each pole includes at least one substantially radial slot in a plane parallel to the axis of rotation of the rotor and preferably passes through the axis of the rotor. By minimizing the reaction fields of the armature, utilization of the magnetic material of the parts of the stator is balanced and a harmful armature reaction effect, which increases saturation of the polar parts of the inductor and which leads to reduction in the driving magnetic torque, is mitigated.

Electric rotating machine with salient poles

A DC electric rotating machine mainly for the starter of an automotive vehicle, including: a stator having a magnetized structure with permanent magnetization and extending along the circumference of the stator; a rotor; a set of brushes adapted for the electric supply of the rotor by switching the electrical current in sections of the rotor; wherein the magnetized structure () of the stator includes at least one sector, between two consecutive magnetic poles (N; S) of the magnetized structure, having a magnetization vector that varies in an essentially sinusoidal manner upon displacement on the stator circumference, and wherein the angular deviation of the neutral line is selected so as to improve the switching during the operation of the machine.

Direct current rotating electric machine with stator having magnetised structure

The starter motor circuit () comprises a combination () of a starter motor and of a device (LPF) for stepping up the battery voltage. The device for stepping up the battery voltage is intended to prevent a drop in battery voltage caused by a current spike that appears in a power circuit of the starter motor when power is applied thereto. The starter motor in the conventional way comprises an electric motor (DCM) and an electromagnetic contactor (EC). The device for stepping up the battery voltage is a filtering device of the inductive type which is mounted in series with the electric motor in the power circuit and comprises a casing made of magnetic material, a primary winding circuit intended to be inserted in series in the power circuit, and a secondary winding circuit mounted as a short circuit.

Starter circuit for a motor vehicle comprising a device for stepping-up the battery voltage, and starter equipped with the circuit

A direct-current rotating electrical machine, in particular for a motor vehicle starter. The machine includes a stator comprising a magnetized structure with permanent magnetization, extending along a circumference of the stator, a rotor, and a group of brushes arranged to allow the electrical supply of the rotor by switching the electrical current in sections of the rotor. The magnetized structure of the machine includes a plurality of main magnets and a plurality of auxiliary magnets, each arranged between two main magnets. The auxiliary magnets have a smaller angular extent and/or radial thickness than the main magnets. The magnetization vector in at least one of the main and auxiliary magnets varies continuously or in steps, at least locally taking a direction other than radial and orthoradial directions.

Rotating electrical machine, in particular for a motor vehicle starter

A starting device for an internal combustion engine, especially that of a motor vehicle, comprises:

Two-phase contactor for starting device for internal combustion engine

The invention relates to a device for controlling a starter for a heat engine that is equipped with an electric motor having a field coil with several windings and an armature winding, both of which are mounted in series, comprising a power contact which is equipped with terminals, one of said terminals being connected to the positive terminal (+Bat) of a battery and the other terminal being connected to the field coil having several windings. The inventive device comprises first means which, in a first phase upon closure of the power contact, activate part of the windings of the field coil and second delayed-action means which, in a second phase during which the power contact is always closed, activate at least a large number of the windings of the coil. The invention is intended for the heat engine starter of a vehicle.

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Lyons, France

Nicolas Labbe