Sagem Defense Securite

Safran Electrical & Power

Labinal Power Systems

Roland Casimir

Vincent Giorgis

Tony Fourmont

François Guillot

Eric De Wergifosse

Jérôme Piaton

Jean-François Weibel

Franck Delnaud

Djemouaï Hadjidj

Paul Giraud

Jean-Jacques Simon

Nicolas Dheilly

The invention relates to an electrical conversion and distribution system for an aircraft, the system comprising at least one synchronous starter-generator (S/G, S/G) intended to be coupled to an engine (Engine) of the aircraft, at least one conversion path comprising a plurality of power converters (CVn, CV'n) associated with switching means suitable for supplying at least one charge (CAC, CAC, CAC, CAC, P, P) from at least one source (S/G, S/G, AUX S/G, AUX S/G, GPU, GPU), and at least one distribution path suitable for supplying electrical charges (CT, SW, CT, SW).

Electrical conversion and distribution system for an aircraft

The invention relates to an electrical conversion and distribution system for an aircraft, the system comprising a synchronous starter-generator (ENG S/G) intended to be coupled to an aircraft engine, a rectifier (R) capable of transforming alternating voltage into direct voltage, an auxiliary synchronous starter-generator (AUX S/G) intended to be coupled to an auxiliary power group, a first, a second and a third power converter (CVCVCV) capable of transforming direct voltage into alternating voltage or vice versa, and at least one battery (BATT).

The protection device for providing protection against short-circuits upstream from an electrical power supply module having an inlet filter with at least one capacitor and an inductor and having a converter with components associated with a plurality of freewheel diodes includes at least one auxiliary winding and a dissipator element associated with the inlet filter, thereby making it possible to provide an inlet filter of small size without over dimensioning the freewheel diodes.

Device for providing protection against short circuits upstream from a power module

The invention relates to a method for converting alternating current into direct current implemented by a conversion device that comprises a three-phase bridge in which at least one arm is comprised of a first switch and of a second switch mounted in series, with the method comprising a step of regulating the direct voltage output by the conversion device, characterized in that it comprises a transition step which precedes the regulation step, with the transition step comprising the formation of signals for controlling first and second switches capable of limiting the amplitude of the inrush currents when switching the conversion device to the alternative network.

Method for converting alternating current into direct current and related device

An assembly having actuators and an electricity power supply system. The assembly includes an input unit connecting the actuators to a three-phase AC electricity network and to a control system. The input unit includes a transformation member arranged to transform the AC into DC at high voltage and connected to a bidirectional power line having connected in series therewith at least one protective switch, a communications interface, and at least one of the actuators. The communications interface is arranged and connected to a central unit to exchange signals over the power line with a signal communications interface of at least one of the actuators. The input unit also includes a charger/discharger unit that connects an energy store to the power line.

Assembly of actuators and of a system for supplying electrical power from a network

A damper circuit for damping a synchronous servo-motor having at least one winding, at least one main damper resistor, connection means for connecting the main damper resistor in series with the winding, and at least one additional damper cell including at least one additional damper resistor connected in parallel with the main damper resistor via a static switch connected to a control module for controlling the switch as a function of a voltage of the winding. The control module has a shunt in parallel with the main damper resistor. The shunt has an output connected to the control input of the switch and a divider bridge connected to the shunt to form a comparator between the voltage of the winding and a conduction voltage of the shunt.

Variable damping circuit for a synchronous servomotor

A power supply circuit for an electric motor, the circuit comprising a plurality of inverter bridge arms, each having means for connection to a respective winding of the motor, each inverter bridge arm comprising in series a first insulated gate bipolar transistor and a junction field effect transistor that are connected to a controller, the circuit including a second insulated gate bipolar transistor connected in series with each field effect transistor and connected to the controller, and a damping resistor connected in parallel with the second bipolar transistor. An aircraft flight control member including a movable airfoil associated with at least one drive motor connected to such a power supply circuit.

Growing community of inventors

Saint Germain-en-Laye, France

Roland Casimir