Thales

Philippe Claude Thomas

François Warnan

Eric Laboure

Richard Lebourgeois

Michel Pate

Jean-Michel Jarrousse

Didier Ferrer

Aymeric Lacoste

Philippe Le Bas

Philippe Cussac

Henri Foch

Jean-Michel Jarousse

A locking device for locking an object capable of sliding along a cable, the device includes the cable and a clamp, the cable passing through the clamp while extending along an axis, the clamp comprising: a fixed part connected to the object, a ring comprising an elastic material with fluid behavior, the ring comprising a central cavity through which the cable passes, an actuator configured to compress the ring between two shapes, in a first shape, referred to as the open shape, the cable being able to run freely in the central cavity and in a second shape, referred to as the closed shape, the cable being compressed by the ring.

Device for locking an object along a cable

A device for locking an object suspended from a cable passing through a clamp and extending along a substantially vertical axis, the clamp includes a fixed part, at least two moving jaws, a first actuator and a second actuator, the two jaws coming into contact with the cable to immobilize the cable by clamping in a closed position and moving away from the cable in an open position, the fixed part having as many inclined surfaces as there are jaws, each of the jaws being configured to slide along one of the inclined surfaces so as to pass from the open position to the closed position, the first actuator being configured to move the jaws upward, make them slide along their respective inclined surface and allow the clamp to close, the second actuator being configured to pull downward on the cable with respect to the fixed part and allow the clamp to open.

Device for locking an object suspended on a cable

A low-drag dipping sonar includes an antenna equipped with acoustic transmitters and receivers. The dipping sonar further comprises a motorized winch comprising a reel, and an actuator configured to rotate the reel and a cable wound on the reel, in that the winch is placed in the antenna, and in that the cable allows the antenna to be hooked to a carrier at its one free end of the cable.

Low drag dipping sonar

A switched-mode AC-DC converter intended to deliver a DC output voltage Vbetween a first output terminal and a second output terminal, the converter comprising at least one conversion chain intended to convert an AC input voltage applied between an input terminal and a neutral point, the conversion chain comprising: a first output capacitor comprising one terminal connected to the first output terminal and another terminal connected to a second terminal of the input switch, a second output capacitor with the same capacitance as the first output capacitor and with a higher capacitance than the capacitance of the link capacitor, the second output capacitor comprising one terminal connected to the second output terminal and another terminal connected to the second terminal of the input switch.

AC-DC converter

A close control of electric power converters includes a diode Din parallel with a switch I; a diode Din parallel with a switch I; a transformer (T). The switches (I, I) are controlled, cyclically repeating the following stages: at a time Tthe switch Iis switched on; at a time Tthe switch Iis switched off; the switch Iis switched on before the current passing through the diode Dreaches zero; at a time Tthe switch Iis switched off; and at a time T, when the diode Dbecomes conductive, the first stage is returned to. In particular, the close control of electric power converters relates to electrically isolated electric power supplies working at high frequency with high efficiency and a high level of integration.

Close control of electric power converters

A rectifier system for a primary AC electrical power distribution system comprising a PFC circuit connected onto the primary distribution system which delivers a DC power supply and means for storing electrical energy connected to the outputs of the PFC via a switching circuit. This circuit is controlled in such a manner as to effect either the discharge of the electrical energy stored in the storage means onto the DC power supply line, or the charging of the storage means by the DC power supply line. A first control circuit determines the state of operation of the switching circuit by comparing the value of the voltage on the power supply line with a first reference voltage. A second control circuit regulates the power delivered by the PFC over the power supply line by comparing the voltage present at the output of the storage means with a second reference voltage.

Architecture of a compensator for power factors and harmonics for a power distribution system

Embodiments of the present invention relate to a method and device for regulating a series resonant inverter with controlled rectification. It also relates to a resonant inverter equipped with such a device. The synchronous series resonant inverter includes a primary winding having across its terminals a periodic voltage V(t) of period T, this primary winding being coupled to at least one secondary winding providing the output voltage Vs. The establishment of the current I(t) in the secondary winding is controlled within the period T. The output voltage Vs is regulated as a function of the phase shift angle &#x3b4; between the zero crossing of the voltage V(t) across the terminals of the primary winding and the instant of establishment of the current I(t) in the secondary winding. Embodiments include the production of isolated switched power supplies having a high level of integration, operating at a switching frequency of several megahertz.

Growing community of inventors

Plougonvelin, France

Philippe Claude Thomas