Commissariat a L'energie Atomique Et Aux Energies Alternatives

Renault S.a.s.

Schneider Electric Industries Sas

Dcns

Sébastien Carcouet

Ghislain Despesse

Pierre Perichon

Daniel Chatroux

Marc Beranger

Frédéric Gaillard

Serge Loudot

Michel Mensler

Matthieu Desbois-Renaudin

Julien Dauchy

Xavier Maynard

Lionel Cordesses

Bruno Beranger

Thierry Boudet

Didier Leonard

Michael Palmieri

Nicolas Pierre

Christophe Dang-Van-Nhan

Sid-Ali Randi

Jeremy Dupont

Vincent Massavie

Jacques Ecrabey

Jean-Noël Carminati

Michaël Palmieri

Alexis Derbey

Romain Montheard

Cyrille Garans

Bernard Keruel

Etienne Durand

The invention relates to an electrical energy converter including an inverter () for obtaining alternative electrical energy from a DC electrical energy source. The inverter includes a switch () having first and second conduction terminals for receiving an AC voltage, the electrical energy converter being suitable for supplying an output electrical energy to a load (). Said converter includes a capacitive circuit () with variable and controllable capacitance, connected between the inverter () and the load (), the control of a modification of said capacitance making it possible to obtain a modification of an electrical output parameter of the converter. The associated system for converting electrical energy includes such an electrical energy converter and a control module () configured for receiving as input a setpoint value of said output electrical parameter (V) of the converter and for controlling the variable capacitance of said capacitive circuit () as a function of said setpoint value.

Electrical energy converter and associated system for converting electrical energy

The present description concerns a power converter () comprising: a switch () comprising first () and second () conduction terminals intended to receive a first AC voltage (Vds), a first circuit () for detecting a minimum value reached by the first voltage at each halfwave, and for averaging minimum values over a plurality of halfwaves, and a second circuit () for controlling the switch configured, according to the average of said values, to turn on the switch when the first voltage is substantially null.

Zero voltage switching power converter

The present invention concerns a power converter including: a capacitor (CBUS) having first and second electrodes respectively coupled to first (E) and second (E) input terminals via a current-limiting element (R, L); at least one normally-on transistor (K, K, K, K, K, K); a circuit () for powering a circuit (CMD_K, CMD_K) for controlling the normally-on transistor; and a switch configurable to, in a first configuration, couple first (g) and second (h) input terminals of the power supply circuit () respectively to the first (E) and second (E) input terminals of the converter, upstream of the current-limiting element (R, l) and, in a second configuration, connect the first (g) and second (h) input terminals of the power supply circuit () respectively to the first and second electrodes of the capacitor, downstream of the current-limiting element (R, L).

Power converter comprising at least one normally-on transistor

The instant disclosure concerns a power converter including a capacitor having first and second electrodes respectively coupled to first and second input terminals via a current-limiting element; at least one normally-on transistor; a circuit for powering a circuit for controlling the normally-on transistor; and a switch configurable to, in a first configuration, couple first and second input terminals of the power supply circuit, respectively to the first and second input terminals of the converter, upstream of the current-limiting element and, in a second configuration, connect the first and second input terminals of the power supply circuit respectively to the first and second electrodes of the capacitor, downstream of the current-limiting element.

An electronic device including: a discrete transistor including a semiconductor chip encapsulated in a package made of an insulating material leaving access to a first pad of connection to a first conduction terminal of the transistor; and a printed circuit board () including first () and second () separate connection pads, wherein the transistor is assembled on the printed circuit board so that the first connection pad () of the transistor is in contact with the first () and second () connection pads of the printed circuit board.

Electronic device comprising a discrete transistor assembled on a printed circuit board

The invention concerns a discrete electronic component including: a semiconductor chip including a transistor, the chip including a first metallization of connection to a first conduction region of the transistor; and a printed circuit board including first and second separate connection pads, wherein: the chip is assembled on the printed circuit board so that the first metallization of the chip is in contact with the first and second connection pads of the printed circuit board; and the assembly including the semiconductor chip and the printed circuit board is encapsulated in a package made of an insulating material leaving access to first and second connection terminals of the component connected, inside of the package, respectively to the first and second connection pads of the printed circuit board.

Discrete electronic component comprising a transistor

An accumulator battery system includes series-connected accumulators with potentials across stages powering corresponding controllers that measure potential differences between terminals of accumulators. A first analog-to-digital converter encodes the potential measured between terminals of an accumulator. A first output delivers a first digital sequence corresponding to the encoded potential difference, logic levels of which are defined by at least two potentials across the first-stage accumulator terminals. A decoder decodes a potential measured by the first control-device from the first digital sequence. A second analog-to-digital converter selectively encodes a potential difference measured between terminals of a second-stage accumulator of the second stage and two potentials of the digital sequence received on the input. A second control-device processor extrapolates a potential difference across the first-stage accumulator terminal of the first stage based on two potentials of the received digital sequence.

System of accumulator batteries with more reliable voltage measurement

The invention relates to an alternating voltage generator () comprising a direct voltage source () that supplies a power bus, a bus capacitor () connected to the power bus, an inverter module () supplied by the power bus and equipped with several normally-on JFET power transistors () in order to deliver an alternating voltage. The generator () comprises a current limiting normally-on JFET transistor () which is located on the power bus in series between the bus capacitor () and the inverter module (), the limiting current of the limiting transistor () being less than the limiting current of each of the power transistors ().

Alternating voltage generator equipped with a current limiting device

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Grenoble, France

Sébastien Carcouet