Safran Electrical & Power

Technofan

Centre National De La Recherche Scientifique

Institut National Polytechnique De Toulouse

Safran Ventilation Systems

Elvia Printed Circuit Boards

Pascal Rollin

Wenceslas Bourse

Guillaume Boulet

Frederic Richardeau

Regis Bernard Albert Meuret

Olivier Belnoue

Samuel Bonnard

Jacques Vincent

Matthieu Morvan

Franck Mosser

Marc Ragonneau

Bertrand Duffaud

The invention relates to an electronic circuit () comprising a plurality of printed circuits () connected by at least one bus bar (), each printed circuit () comprising at least two superposed layers enclosing at least a portion of said at least one bus bar (), so as to cover said at least one bus bar ().

Electronic circuit

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

A permanent magnet synchronous machine includes a permanent magnet rotor and a three-phase stator, the machine being associated with a control inverter for controlling the stator of the machine. A method of controlling the machine includes taking three simultaneous measurements by three respective Hall effect sensors arranged to have a central sensor and two lateral sensors, the two lateral sensors being placed at 120&#xb0;/p mechanical relative to the central sensor about the rotation axis of the rotor, where p is the number of pairs of poles of the machine; determining the position of the rotor based on the three measurements; controlling the control inverter as a function of the determined position of the rotor; and prior to controlling the inverter, applying a time delay to the three measurement signals so that the control of the control inverter takes account of a variable desired lag angle.

Method for controlling a synchronous machine with permanent magnets and corresponding device

A cooling assembly () includes a conduit () including a side wall () and a fan () that includes a rotating electric machine (), a power supply module () including three distinct single-phase self-transformers (,,), each single-phase self-transformer being magnetically decoupled from one another, each single-phase self-transformer (,,) surrounding the side wall () of the conduit.

Cooling assembly for an aircraft provided with a fan

An electronic temperature sensor for measuring the junction temperature of an electronic power switch () of a static converter () includes an injection source of a calibrated measurement current () and a differential voltage measurement amplifier (). The electronic temperature sensor includes a first series connection () element and a second series connection () connected respectively to the inlet terminals () of the differential voltage amplifier (). The first and second series connection elements () are configured to protect the amplifier against a high voltage, have essentially identical electrical characteristics and are included in the set formed by resistances and high-voltage (HV) rapid diodes.

Electronic temperature sensor for measuring the junction temperature of an electronic power switch during operation, and method for measuring the temperature of the junction by this electronic sensor

Growing community of inventors

Daux, France

Pascal Rollin