Stmicroelectronics S.a.

Forsee Power

Sgs-thomson Microelectronics S.a.

Stmicroelectronics(tours) Sas

Faiveley Transport Tours

Stmicroelectronics (rousset) Sas

Benoît Peron

Laurent Gonthier

Bertrand Rivet

Frédéric Gautier

Ghafour Benabdelaziz

David Jouve

Aurélien Hamadou

Francis Cuellar

Arnaud Bruder

Device for supplying electric power to at least one electrical energy-consuming unit or to at least one electrical energy-supplying unit or to at least one electrical energy-consuming and -supplying unit of an electrical installation, the device including a plurality of electrical energy generators, each generator of the plurality being connected electrically in parallel with the other generators, each generator including a computing unit, a power converter and an electrical energy storage and supply element, the power converter of a generator being bidirectional and configured so as to supervise a value of a setting variable on the basis of an electric charging or discharging power of the storage element of said generator, the electric charging or discharging power being calculated in real time by the computing unit on the basis: —of a function of the values of the setting variables of the electric charging or discharging power of each of the storage and supply elements of the other generators; and —of a determined setpoint power; and —of a number of generators that are in a determined operating state, the sum of the electric charging or discharging powers of each storage element of each generator of the plurality being equal to the determined setpoint electric power.

Electric power supply device of at least one electrical energy consuming member or of at least one electrical energy rendering member

A method for converting an input voltage (V) of a converter () into an output voltage (V), the circuit comprising a first bridge arm consisting of two switches (A) and (B), a second bridge arm consisting of two switches (C) and (D), connected in parallel, a primary coil coupled to a secondary coil, and connected by a center point pole (PAB) of the first bridge arm, and by another center point pole (PCD) of the second bridge arm; the circuit further comprising a capacitor in parallel between the respective terminals of each of the switches (A, B, C, D); a third bridge arm formed by two switches (E) and (F), connected in series; each of the switches (A, B, C, D, E, F) being associated with a diode at the terminals of said switch; an injection inductance (L) connected to the center point (P) of the first bridge arm, and to the center point (P) of the third bridge arm; a monitoring-control unit configured to control the switches to turn them ON or OFF, according to a control cycle configured to ensure soft switching between ON and OFF.

Method and device for converting a voltage with soft switching of the switches

Disclosed is a battery configured to electrically power at least one actuator or to receive electrical energy from at least one onboard actuator onboard an electrically autonomous vehicle, the battery including at least one battery element, the at least one battery element, being configured to store or restore electrical energy, the battery also comprising a thermoelectric device that is electrically connected to the at least one battery element, the thermoelectric device including: —a first heat-conducting portion placed in contact with the at least one battery element, —at least one thermoelectric cell, placed in contact with the heat-conducting portion, the at least one thermoelectric cell, being configured to produce a first positive or negative thermal power as a function of a first electrical current passing through the at least one thermoelectric cell, the first electrical current being provided by the at least one battery element—a second heat-conducting portion placed in contact with the at least one thermoelectric cell and configured to dissipate a second thermal power generated by the at least one battery element, —at least one first sensor configured to measure a temperature of the at least one battery element, —a regulation module, the at least one first sensor being coupled to the regulation module, the regulation module being configured to control the first electrical current as a function of the target temperature of the at least one battery element such that a variation between the temperature measured by the at least one first sensor and the target temperature remains below a predetermined threshold.

Battery and method for thermal regulation of a battery onboard an electric vehicle

The present invention relates to a bi-directional power converter () for converting an input voltage into an output voltage. The bi-directional power converter () may comprise a primary switching unit having a primary switching frequency and a secondary switching unit having a secondary switching frequency: the primary switching frequency being lower than the secondary switching frequency.

Power converter with a resonant unit

A chopped current input electrical energy converter includes at least one conversion module (K, K) generating at least one first output signal (V) and one second output signal (V) and including: a transformer (), an input switching stage () controlling the transfer of electrical energy to the transformer (), and at least one first output stage () and one second output stage (), the first output stage () generating the first output signal (V), and the second output stage () generating the second output signal (V); the level of the first output signal (V) reflected at a primary winding () of the transformer () is greater than the level of the second output signal (V) reflected at the primary winding () of the transformer ().

Chopped electrical energy converter

A circuit for providing at least two power supply voltages from a D.C. voltage provided by a first switched-mode converter between a first and a second terminals, wherein: a second reversible buck-type switched-mode converter is powered with said D.C. voltage; a capacitive dividing bridge connects said first and second terminals, the midpoint of the capacitive dividing bridge corresponding to the output of the second converter and defining a third terminal of provision of an intermediary potential; and said two power supply voltages are respectively sampled between the first and third and between the third and second terminals.

Multiple-level switched-mode power supply

A power supply circuit capable of providing two regulated voltages based on a D.C. input voltage, including a boost converter and a buck-boost converter, the circuit including a single inductive element common to the boost and buck-boost converters.

Boost/buck converter and method for controlling it

A method and a circuit for controlling a power recovery stage of a plasma display panel including a resonant circuit of at least one inductive element and one capacitive element, wherein the capacitive element is precharged to half a supply voltage of the display panel.

Controlling an energy recovery stage of a plasma screen

A charge transfer circuit of a liquid crystal display includes at least one inductive element connectable between first and second common terminals, to a first and to a second groups of lines of the display, respectively.

Charge transfer circuit and method for an LCD screen

A circuit for detecting the zero crossing of a variable voltage across at least one switching element, including circuitry for measuring the slope of the voltage when it varies in a given direction, and for indicating a zero crossing if this slope is comprised within a range of values.

Detection of the zero crossing of an A.C. voltage

A circuit for controlling a bidirectional switch referenced to a first reference voltage by a control circuit supplied by a first voltage and referenced to a second reference voltage. The supply voltage of the control circuit is connected by a diode to a coupling circuit comprising a node, this node being connected to the collector of an NPN transistor having its emitter connected to the second reference voltage and having its base receiving the output of the control circuit, to a first terminal of a capacitor having its second terminal connected to the first reference voltage, to the emitter of a PNP transistor having its base connected to the collector of the transistor, and having its collector connected to the control terminal of the bidirectional switch.

Circuit for the control of a triac without galvanic isolation

A circuit for controlling a triac, comprising: a bidirectional current-limiting active element connecting the triac gate to its opposite power electrode; and a switch connecting the gate to the other power electrode of the triac.

Triac control circuit

A method and a circuit for controlling at least one thyristor constitutive of a rectifying bridge with a filtered output, including closing the thyristor when the voltage thereacross becomes greater than zero, and making the gate current of the thyristor disappear when the current therein exceeds its latching current.

Control of a thyristor of a rectifying bridge

An isolated circuit of low-voltage supply of a control circuit of a high-voltage load, in or upstream of a fullwave three-phase rectifying bridge, comprising a first low-voltage capacitor having a first electrode connected to one of the rectified output terminals of the bridge, and at least one second capacitor providing said low voltage, a first electrode of the second capacitor being connected to one of the A.C. input terminals of the bridge, the respective second electrodes of the capacitors being connected by a high-voltage diode having its cathode connected to the second capacitor.

Isolated low-voltage power supply source

The invention relates to an auxiliary switching circuit () for a chopping converter comprising a first inductive element (L) for serial energy storage with a free-wheel diode (DL) and a switch (K), in addition to a second inductive element (L) for di/dt control when the switch is closed, the auxialiary switching circuit comprising a magnetic circuit () whereby a main winding thereof is formed at least partially by the first inductive element (L), also comprising means (L, D, L, D) for discharging the second inductive element when the switch is opened or closed, and means (L, D) for transferring the energy corresponding to the closure vis a vis said main winding.

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Tours, France

Benoît Peron