Commissariat a L'energie Atomique Et Aux Energies Alternatives

Renault S.a.s.

Institut Polytechnique De Grenoble

Xavier Maynard

Sébastien Carcouet

Ghislain Despesse

Pierre Perichon

Serge Loudot

Rawad Makhoul

Vincent Massavie

Sylvain Leirens

Thierry Boudet

Yves Lembeye

Jia Zhuang

Xavier Bourgeois

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

A power converter for converting a DC input voltage into an AC output voltage, the power converter having a structure of Phi-2 type, and includes an input terminal for the DC input voltage, an output terminal for the AC output voltage, a power switch equipped with a control electrode, a first electrode and a second electrode linked to a reference potential, the power switch being configured to receive a drive signal at the control electrode, the converter further comprising a self-oscillating circuit, connected between the output terminal and the control electrode, and configured to supply and maintain a sinusoidal drive signal to the power switch from the output voltage.

Class Phi-2 power converter comprising a self-oscillating switch control circuit

The present description concerns a method of controlling a converter including two H bridges () coupled by a transformer (), wherein: two switching sequences between states are respectively applied to the two bridges; one of the states of a first one of the sequences corresponds to a given direction of application of a voltage to the transformer by the bridge having the first one of the sequences applied thereto; the first one of the sequences varies during a same halfwave of an AC voltage (V) across one of the bridges (), so that: during at least a first period, switchings into and out of said one of the states occur in a same state of a second one of the sequences; and during at least a second period, switchings into and out of said one of the states occur in different states of the second one of the sequences.

Switched-mode converter control

An electrical converter chosen from the group consisting of an inverter able to generate an AC voltage from a DC voltage and a rectifier able to generate a DC voltage from an AC voltage. This converter comprises a first inductor and a controllable switch that are connected in series between first and second DC voltage ports. The converter comprises a piezoelectric resonator comprising:

Electrical converter

A resonant power converter for converting a DC input voltage to AC or DC output voltage, includes a transistor, and a first inductor connected to an input port for a DC voltage to be converted, the drain being connected to the input port by way of the first inductor, the converter furthermore comprising a first resonant network, connected between the drain of the transistor and ground, the first resonant network being configured so as to extract the fundamental component of a drain-source voltage of the transistor and to phase-shift it by a phase shift angle such that the fundamental component and the drain-source voltage are in phase opposition and thus generate a sinusoidal drive signal.

Resonant power converter and method for converting a DC input voltage to AC or DC output voltage

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.

Growing community of inventors

Grenoble, France

Xavier Maynard