Abstract: 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.

Abstract: 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.

Abstract: A combined device for instantaneous control of power transfer between two cores of a direct current network and for powering an alternating current engine. The device includes: an assembly of two three-phase inverters, each including three switching cells connected to the engine, which engine includes three stator windings connected to the two three-phase inverters, and a module for controlling the assembly, which ensures both an adjustable direct current power transfer and enables stabilization of the direct current voltage of one of the two cores if it is not connected, and the control of the engine.

Abstract: A device for controlling power transfer between two cores of a direct current network, in which the cores, which are source-charge interconnection nodes, include protective and contact members, placed in different areas of a power distribution system in which the direct current network is installed. The device includes an electronic power converter including two switching cells mutually interconnected by an inductance, wherein each switching cell includes two switches, and a module for controlling the converter, which ensures both a controllable direct current power transfer and stabilization of the direct current voltage.

Abstract: A device for controlling power transfer between two cores of a direct current network, in which the cores, which are source-charge interconnection nodes, include protective and contact members, placed in different areas of a power distribution system in which the direct current network is installed. The device includes an electronic power converter including two switching cells mutually interconnected by an inductance, wherein each switching cell includes two switches, and a module for controlling the converter, which ensures both a controllable direct current power transfer and stabilization of the direct current voltage.

Abstract: A combined device for instantaneous control of power transfer between two cores of a direct current network and for powering an alternating current engine. The device includes: an assembly of two three-phase inverters, each including three switching cells connected to the engine, which engine includes three stator windings connected to the two three-phase inverters, and a module for controlling the assembly, which ensures both an adjustable direct current power transfer and enables stabilization of the direct current voltage of one of the two cores if it is not connected, and the control of the engine.

Abstract: A static electrical energy converter modulates the electrical energy exchanged between at least two electrical sources. The converter includes at least one electrical voltage source, one current source and at least one electrical switching stage, each switching stage having at least two static switches (k1) star-connected to the voltage source or voltage sources, with the common point of the star connected to the current source, and the current source being connected back to the voltage source or sources. At least one of the static switches (k1) of at least one switching stage is a switch provided with two output electrodes, of which at least one change of state (providing switching at the opening or at the closing) is automatic and is operated exclusively at a predefined voltage threshold other than zero when the absolute value of the voltage increases.

Abstract: A static electrical energy converter modulates the electrical energy exchanged between at least two electrical sources. The converter includes at least one electrical voltage source, one current source and at least one electrical switching stage, each switching stage having at least two static switches (k1) star-connected to the voltage source or voltage sources, with the common point of the star connected to the current source, and the current source being connected back to the voltage source or sources. At least one of the static switches (k1) of at least one switching stage is a switch provided with two output electrodes, of which at least one change of state (providing switching at the opening or at the closing) is automatic and is operated exclusively at a predefined voltage threshold other than zero when the absolute value of the voltage increases.

Abstract: The present invention relates to a component forming a normally on dual thyristor, which can be turned off by a voltage pulse on the control electrode, including a thyristor, a first depletion MOS transistor, the gate of which is connected to the source, connected between the anode gate and the cathode of the thyristor, and a second enhancement MOS transistor, the gate of which is connected to a control terminal.

Abstract: This invention relates to an electronic device for the conversion of electric energy between a voltage source E and a current source J. This device is comprised of cascaded switching cells (CL.sub.k) each having two switches (I.sub.Ak, I.sub.Bk) and comprising capacitors (C.sub.k) associated with the cells for distributing the voltage of the source over the switches, and control logics (LG.sub.k) which condition the exchanges of energy and are synchronized for limiting the voltage supported by each switch to a fraction (V/n) of the supply voltage, for limiting the ripple amplitude of the voltage of the output to the same fraction V/n and for conferring on this ripple voltage a frequency (nF) which is a multiple of the switching frequency (F) of the switches.

Abstract: The invention concerns a process for control of the opening of a power interrupter, especially a transistor, at a determined instant, regardless of the particular characteristics of the interrupter. According to the invention, the emission of the normal closing command (A) of the interrupter is terminated at a determined time interval before the said determined instant, and in its place is emitted an additional closing command (G) with a duration equal to the difference between the said interval and the actual time required by the interrupter to pass from the closed state to the open state. Preferably, the actual time required by the interrupter to change state is determined during its preceding passages from the closed state to the open state.

Abstract: The invention concerns a drive interface (1) for an electronic static switch (3) such as a blocking thyristor or a transistorized blocking switch; this interface is inserted between said static switch and a control stage (2) designed to generate a logic control signal. Said interface comprises a circuit (5) for detecting the voltage across the two power electrodes of the static switch (3) and a drive circuit (6) receiving the signal emitted from the circuit (5) and the control signal; this drive circuit is designed to assure a polarity on the control electrode (3c) of the static switch such that:said polarity corresponds to blocking the switch when the control signal carries an OFF command, and/or the voltage across the power electrodes is different from 0,said polarity corresponds to the conduction state of the switch when the control signal corresponds to permission to conduct an the voltage across the power electrodes is near 0.

Abstract: The present invention pertains to a commutator containing a semiconductor operable with unidirectional current and bidirectional voltage and with controlled interruption and automatic ignition, and in which a semiconductor device with controlled commutation is utilized. In accordance with the invention, the commutator includes a logic gate (61) having an input which, when the anode-to-cathode voltage of the semiconductor device (2) is below a specific positive voltage close to zero, receives a logic signal from an adapting circuit (4) connected to the semiconductor anode. The other input of the logic gate receives a control logic signal, and the output of the gate is connected to another adapting circuit (5) which converts the logic signal output by the logic gate into a suitable control signal which is transmitted to a the control terminal of the semiconductor device (2).

Abstract: A static conversion assembly comprises a serial connection of n apparatus each formed by the association of two converters (.DELTA.) of the type described in U.S. Pat. No. 4,330,819. Each control stage of a given apparatus (..) is adapted to furnish opposite control signals to the two controlled blocking static interrupters of each apparatus (.DELTA.). In addition, the assembly of control stages of the apparatus (.DELTA.) is driven by a centralized control unit (56) which provides a delay in the control signals of an apparatus (.DELTA.) with respect to the control signals applied to a preceeding apparatus in the serial arrangement thereof. In addition, a voltage distribution stage (51) is connected to the apparatus (..) in order to divide the applied voltage and apply only a fraction thereof to each interrupter.

Abstract: A static energy converter apparatus, having at least one converter .GAMMA. conforming to that described in U.S. Pat. No. 4,330,819, includes a supplementary output stage 21 adapted to produce an alternating current that changes direction upon each commutation of the controlled blocking static interrupters of the converter .GAMMA.. Stage 21 is such that the direction of the alternating current corresponds to the direction of circulation of current in the collector-emitter of each interrupter at the instant of commutation.

Abstract: The invention relates to a static semi-conductor electrical energy converter.The converter is of the type comprising a power stage 5 provided with at least one power transistor 7, and a control stage 1 furnishing a control signal S.sub.C appropriate for the conversion to be carried out; according to the invention, each transistor is a transistor having a voltage V.sub.CEX greater than its voltage V.sub.CEO and is associated with an intermediate stage 4 for treatment of the control signal S.sub.C. This stage 4 is adapted to drive the base of the said transistor to guarantee operation thereof over a voltage range extending from 0 to V.sub.CEX thus making it possible to take advantage of the improved voltage V.sub.CEX of the said transistor.The invention is applicable in particular in the case of inverters adapted to convert a continuous electric voltage into an alternating electric voltage.