Safran Electrical & Power

Technofan

Safran Ventilation Systems

Guillaume Boulet

Wenceslas Bourse

Pascal Rollin

Jérémy Cuenot

Nicolas Stefanovic

Regis Bernard Albert Meuret

Pascal Jacques Frédéric Guy Toutain

Jacques Deleris

Pascal Toutain

Jean-Christophe Lombard

A system for generating air includes: an electromechanical device generating an airflow equipped with an air inlet opening and an outlet; a casing extending between a first end attached to the air inlet opening and a second end located opposite the first end, the casing including two parts together defining a closed recess, each part including a hollow wall defining a channel extending between the two ends of the casing, each channel opening in front of the air inlet opening so that the electromechanical device is supplied with air routed by the channels; and at least one electronic card for power supply or control of the electromechanical device located in the recess of the casing.

Air generation system comprising an electromechanical device, a casing and an electronic card

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

The ventilation apparatus () according to the invention comprises a fan () including a rotary machine () and a fan wheel (), an observation module, a module for connecting the device () to a power source (), the fan wheel () being set in rotation by the rotary machine () when the apparatus () is connected to the power source (), and rotating freely when the apparatus () is disconnected from the power source (). The device () further includes an internal power module electrically connected between the rotary machine () and the observation module, the internal power module being able to recover an electric current generated by the rotary machine () driven by the fan wheel (), to power the observation module (), when the apparatus () is disconnected from the power source ().

Ventilation apparatus, aircraft comprising a such ventilation apparatus and associated monitoring method

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

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l'Isle Jourdain, France

Guillaume Boulet