Labinal Power Systems

Centre National De La Recherche Scientifique

Safran Electrical & Power

Universite Dé Lorraine

Institut Polytechnic De Grenoble

Regis Bernard Albert Meuret

Wenceslas Bourse

Pascal Rollin

Guillaume Boulet

Farid Meibody-Tabar

Yvan Avenas

Jacques Salat

Babak Nahid-Mobarakeh

Mansour Tawk

Sami Zaim

A DC/AC electrical power converter device having inlet terminals for electrically connecting to a DC electricity power supply network, outlet terminals for electrically connecting to an electric motor, a chopper electrical converter coupled to the inlet terminals, and an electrical inverter coupled between the chopper electrical converter and the outlet terminals. The converter device further includes a control unit for controlling the electrical inverter and that is configured to operate using pre-calculated pulse width modulation with pre-calculated unchanging switching instants for the controlled switches of the electrical inverter regardless of the frequency of rotation of the motor and of the voltage of the electricity network for connection to the device.

DC/AC electrical power converter device for a variable-speed motor and a high-speed motor

An electronic device with cooling of a heat dissipation source, by a liquid metals spreader, the device including at least one heat dissipation source, at least one spreader through which at least one liquid metal circulation channel passes forming a loop routed below a heat dissipation source, at least one heat sink, and at least one electromagnetic pump moving the liquid metal in the at least one channel such that the liquid metal absorbs heat dissipated by a heat dissipation source and transports the absorbed heat to be evacuated by the heat sink. Each spreader includes at least two plates made of an electrical insulating material located on each side of at least one bar made of deformable material.

Electronic device with cooling by a liquid metal spreader

A method of controlling a permanent magnet synchronous machine including a stator and a rotor. The method includes determining an estimated position of the rotor, and determining a second in-phase voltage setpoint that, in alternation, is equal either to a first in-phase voltage setpoint or else to the first in-phase voltage setpoint plus a predetermined periodic signal. The determining an estimated position of the rotor includes determining a coupling term, determining a speed of rotation of the rotor as a function of the coupling term, and determining the estimated position of the rotor by integrating the speed of rotation of the rotor.

Control of a permanent-magnet electric machine

Growing community of inventors

La Rochette, France

Regis Bernard Albert Meuret