Valeo Systemes De Controle Moteur

Valeo Siemens Eautomotive France Sas

Valeo Equipements Electriques Moteur

Valeo Eautomotive France Sas

Boris Bouchez

Luis De Sousa

Nicolas Gelez

Dominique Oswald

Bruno Condamin

Pierre-Alexandre Chauvenet

Hicham Sadki

Nathalie Coia

Mathieu Grenier

Pierre Sardat

Gang Yang

Emmanuel Talon

Antoine Bruyere

Benedicte Silvestre

José-Louis Da Costa

Ronan Danioux

Jean-Guiherm Dalissier

Bénédicte Silvestre

An electric system to charge a battery on a vehicle provides for a three-phase alternating-direct converter comprising input terminals connected to an outside power grid, a high output terminal and a low output terminal, a direct-direct converter made up of two direct-direct converter circuits, a first converter circuit having a high input terminal connected to the high output terminal of the alternating-direct converter and a second converter circuit having a low input terminal connected to the low output terminal of the alternating-direct converter, the low input terminal of the first direct-direct converter circuit being connected to the high input terminal of the second direct-direct converter circuit, and the high output terminal of the first converter circuit being connected to the high output terminal of the second converter circuit and the low output terminal of the first converter circuit being connected to the low output terminal of the second converter circuit.

Electric charger system for electric or hybrid vehicle

The invention relates to a method for distributing the total power of an energy conversion device between at least two converters in said energy conversion device,

Method for distributing the total conversion power between the converters of a multiple-converter conversion device

The invention concerns a method for charging an electrical energy storage unit, in particular installed in a vehicle, from a continuous charging terminal, using a DC/DC voltage converter to adapt the voltage between said continuous charging terminal and said electrical energy storage unit, said DC/DC voltage converter comprising at least two interleaved cells operating out of phase, each cell having respective switches; said method comprising control of the switches of said DC/DC voltage converter by pulse width modulation with a duty cycle to adapt the voltage between said continuous charging terminal and the electrical energy storage unit, said duty cycle having a given value &#x3b1;that is substantially constant over several interleaving cycles.

Method for charging an electrical energy storage unit and voltage converter

An electrical architecture () for converting DC voltage into AC voltage, and vice versa, comprising:&#x2014;a DC/AC voltage converter (), comprising a plurality of arms mounted in parallel, each arm comprising two controllable switching cells (), in series and separated by a mid-point, the arms being paired in H-bridges (),&#x2014;for each H-bridge (), a dedicated control member (), such that all of the switching cells () of said H-bridge () can be controlled by this control member (), each control member () being intended to communicate with a same remote control unit () through a potential barrier ().

Electrical architecture for converting DC voltage into AC voltage, and vice versa

The present invention relates to a control device () for at least one transistor, referred to as the controlled transistor (), comprising:&#x2014;said controlled transistor () which comprises a control electrode (E) and two other electrodes (Eand E),&#x2014;a main control circuit () connected to the control electrode (E) of the controlled transistor () and configured, according to a main mode of operation, to control the state of the controlled transistor () and,&#x2014;an auxiliary control circuit () configured, according to an auxiliary mode of operation, to inject an auxiliary current opposing the current circulating between the main control circuit () and the control electrode (E) of the controlled transistor (), characterized in that the control device () also comprises a control circuit () of the auxiliary control circuit (), said control circuit () being configured to block or authorize the auxiliary operation of the auxiliary control circuit () depending on the commands from the main control circuit ().

Control device for transistors

A power supply having a transformer, a magnetizing current regulation circuit, and a device for controlling the regulation circuit intended to switch the regulation circuit alternately from the magnetizing state to the demagnetizing state is disclosed. The control device is intended to prolong the magnetization phase for a magnetization time (T). The power supply also includes an output capacitor connected to a secondary of the transformer so as to form a resonant circuit with the leakage inductor, the voltage between the terminals of the output capacitor corresponding to the output voltage (V) of the power supply. The magnetization time (T) and the value of the output capacitor are such that, on the resonance portion of the magnetization phase, the output voltage (V) describes a sine wave portion and, starting from an initial value (V) below the median value of the sine wave, passes through said median value.

Power supply and method for controlling a power supply

The present invention relates to a method of managing a charge transfer between, on the one hand means of accumulation () of an electrical control device () of an electric motor of a motor vehicle () and, on the other hand, an external electrical circuit () outside said motor vehicle (), said electrical control device () comprising: a voltage converter () connected to the accumulation means (); an H-bridge voltage inverter () connected to the voltage converter () on the one hand and to the phases of the electric motor on the other hand, characterized in that the method comprises a step of controlling the voltage converter () and the voltage inverter () as a function of the charge transfer.

Charge transfer device and associated management method

An electrical architecture () for converting DC voltage into AC voltage, and vice versa, comprising: &#x2014;a DC/AC voltage converter (), comprising a plurality of arms mounted in parallel, each arm comprising two controllable switching cells (), in series and separated by a mid-point, the arms being paired in H-bridges (), &#x2014;for each H-bridge (), a dedicated control member (), such that all of the switching cells () of said H-bridge () can be controlled by this control member (), each control member () being intended to communicate with a same remote control unit () through a potential barrier ().

The battery charger comprises: two output terminals (BS, BS) between which a battery () is designed to be connected; two input terminals (BE, BE) designed to be connected to an electrical network (); two inductors (L., L.) respectively connected to the first input terminal (BE) and to the second input terminal (BE); two switching arms (B, B) for respectively connecting the inductors (L, L) selectively to the first output terminal (BS) and to the second output terminal (BS); a control device () designed for controlling the switching arms (B, B) so as to draw from the electrical network () a mains current (i) in phase with the mains voltage (u). The battery charger further comprises: a smoothing capacitor (C) connected to the second output terminal (BS); and a connection device () for connecting the smoothing capacitor (C) to the second input terminal (BE). The control device () is further designed to control at least the second switching arm (B.sub.C) so as to alternately charge and discharge the smoothing capacitor (C) for smoothing the load current (i).

Battery charger, electrical system and motor vehicle

A combined power supply and charging method includes controlling switching from a motor power supply mode to an energy storage charging mode on an electrical network and vice versa, and compensating for magnetic fields during the energy storage charging mode in order to limit or eliminate movements of a rotor of the motor.

Method and electric combined device for powering and charging with compensation means

The invention relates to a power module () for converting an electric current flowing between an accumulator and an alternating-current motor, said module () comprising switching means () that can be controlled to authorize the powering of the motor and/or the charging of the accumulator, and an intrinsic control unit () connected to said switching means () and capable of delivering opening and/or closing signals to said switching means (), said intrinsic control unit () being further capable of exchanging data with a remote control unit, with a potential barrier.

Power module and electric device for the combined powering and charging of an accumulator and a motor respectively

The invention relates to a device for detecting a leakage current, comprising means () for measuring a current from an electrical circuit of a vehicle, in particular a motor vehicle, said detection device being configured to be placed on board said vehicle and being such that the measuring means () comprise: a magnetic core () configured to be passed through by one or a plurality of conductive elements () traversed by the current from the electrical circuit, said conductive element(s) () forming a primary winding; a secondary winding (), wound around the core (), to generate a magnetic flux from a reference current; and an oscillator () for generating the reference current though the secondary winding (), the reference current being configured to saturate said core (). According to the invention, the value of the current of the primary winding () is obtained from the average value of the current at the secondary winding () over a period of oscillation covering a complete core () magnetization and demagnetization cycle. The invention also relates to various on-board systems using said device.

Detection of a leakage current comprising a continuous component in a vehicle

A device for controlling at least one transistor is disclosed. The device includes the transistor, which includes a control electrode and two other electrodes, a main control circuit connected to the control electrode of the transistor and configured to control the state of the transistor in a main operating mode, and an auxiliary control circuit configured to inject, in an auxiliary operating mode. An auxiliary current opposed to the current flows between the main control circuit and the control electrode of the transistor.

Device for controlling at least one transistor

A method is disclosed for reducing the common mode current flowing between the internal ground of an electrical circuit in an automotive vehicle, and the earth, when electric power is exchanged between an electric power storage unit of the electrical circuit and an electric power source external to the circuit. An electronic component is used to apply an electrical quantity as a function of the common mode current to an injection point in the circuit in order to reduce the common mode current. The value of the common mode current is obtained using a measuring device having a magnetic torus configured to be traversed by an electric line by which the electric power is exchanged, the electric line forming a primary winding, a secondary winding, wound about said torus for generating a magnetic flux on the basis of a reference current, and an oscillator for generating the reference current through the secondary winding.

Method for reducing the common mode current

The invention relates to a combined device and method for powering and charging, that comprises an AC motor (), a converter (), storage means (), and switching means () either for enabling the powering of the motor () or for enabling the charging of the storage means () by the converter. The device includes means for compensating the magnetic fields generated during the charge of the storage means () in order to limit or prevent the movements of the motor () rotor.

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Cergy le Haut, France

Boris Bouchez