Sagem Defense Securite

Safran Electronics & Defense

Marc Pontrucher

Philippe Elie

Tony Fourmont

Alexandre Guyamier

Pascal Nauroy

Lisandra Kittel Riel

Arnaud Boucaud

David Wong

Van Lam Nguyen

Lisandra Kittel Ries

An AC/DC converter comprising an input rectifier circuit connected in series with a primary winding () of an isolating transformer () and to a chopper switch (T) driven by a control circuit () using pulse width modulation on the basis of a signal representative of a primary current, the isolating transformer having a first secondary winding () that is wound in the same direction as the primary winding and that is connected to an output line () of the converter via a diode (D) and a filter coil (L), and a second secondary winding () that is wound in the opposite direction to the primary winding and that is connected directly to the output line via a diode (D), the output line being connected to an output capacitor (Cout). The converter includes an analog correction circuit for correcting the primary current, which circuit is connected to the control circuit and to a measurement element () delivering a signal representative of the primary current, and is arranged to transform said signal into a triangular signal suitable for driving the control circuit.

AC/DC converter with galvanic insulation and signal corrector

A power supply and control device for a plurality of electric actuators, the device comprising a control circuit and a power circuit, the power circuit having an inverter module connected to a switch module provided with connection means for connection to the actuators, the control circuit being connected to the switch module to operate it so as to connect the actuators sequentially to the inverter module, wherein the control circuit is arranged to control the inverter module and the switch module sequentially, and wherein the control circuit includes a monitoring module arranged to detect a malfunction of the device. An actuator assembly comprising a plurality of actuators and such a power supply and control device, and an aircraft including a plurality of actuators and such a power supply and control device of the above-specified type.

Power supply and control device for actuators, corresponding acutation assembly, and aircraft comprising such a device

Growing community of inventors

Boulogne-Billancourt, France

Marc Pontrucher