Valeo Systemes De Controle Moteur

Valeo Equipements Electriques Moteur

Valeo Siemens Eautomotive France Sas

Valeo Eautomotive France Sas

Valeo Electrification

Dominique Oswald

Boris Bouchez

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

A method of supplying electrical power to an electric motor including phases having respective directions about a rotation axis of the electric motor and configured to carry respective phase currents defining a current vector starting from the rotation axis, the method including: switching connection of the phases to a voltage source so as to cause the current vector to turn, where the switched connection of the phases includes, during at least one turn of the current vector, for each of one or more phases: over a part of the turn, disconnecting the phase from the voltage source to open circuit the phase, and over another part of the turn, switching connection of the phase to the voltage source, and where a perpendicular to the direction of the phase passes through the part of the turn over which the phase is disconnected from the voltage source.

Method for supplying power to an electric motor, associated computer program, inverter control device and electrical rotating machine

A device that filters electromagnetic interference includes electrical conductors mounted in parallel. Each conductor includes a first coil positioned between a first and a second end of the respective conductor. Each first coil is coupled magnetically to each other first coil and has the same number of turns as each other first coil. The first and second ends of each of the conductors, respectively, are first and second terminals for the device. The device includes capacitors. Each capacitor is mounted between the second end of a corresponding electrical conductor and a third terminal of the device. The device includes an additional circuit. The additional circuit includes a second coil coupled magnetically with the first coils of the conductors. The additional circuit includes an additional coil. The second coil has a second number of turns.

Device and method for filtering electromagnetic interference

Device () for filtering electromagnetic interference, comprising: &#x2014;a plurality of electrical conductors () mounted in parallel, each conductor () comprising a first coil () disposed between a first () and a second () end of the conductor (), said first coils () being coupled magnetically together and exhibiting one and the same first number of turns, said first () and second () ends of the conductors () respectively defining first () and second () terminals for the device, &#x2014;a plurality of capacitors (), each capacitor () being mounted between the second and () of an electrical conductor () and a third terminal () of the device, and &#x2014;an additional circuit () comprising a second coil () coupled magnetically with the first coils () and exhibiting a second number of turns, said circuit () furthermore comprising an additional coil ().

A method for reducing the common mode current (i) circulating between the internal ground () of an electrical circuit () and the earth when electrical energy is exchanged between an electrical energy storage unit of the electrical circuit () and an electrical energy source external to said circuit (), in which method an electronic component () is used to apply an electrical quantity (Vs, Is) at a point () connected via at least one impedance () to an electrical line () of said circuit () via which electrical energy is exchanged, said electrical quantity (Vs, Is) applied making it possible to reduce the common mode current (i).

Method for reducing common mode current circulating between the internal ground of an electrical circuit and the earth

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.

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Houilles, France

Dominique Oswald