Abstract: The present invention relates to a circuit for producing electricity, the circuit comprising: a first rectifier comprising inputs and an output; a second rectifier comprising inputs and an output, the inputs of the first and second rectifiers being for connection to an alternator so that phases of the alternator are connected in series with the inputs of the first and second rectifiers; at least one switch for short-circuiting the output of the second rectifier or at least a part of the inputs of the second rectifier; and a control unit for controlling the switching of the at least one switch so as to regulate the rectified voltage delivered by the circuit.

Abstract: The present invention relates to a rotary electrical machine comprising: at least one stator; and at least one rotor; the rotor having an axis of rotation and co-operating with the stator to define at least one airgap, the rotor comprising permanent magnets and pole pieces between the magnets; at least one pole piece being associated with one or more permanent magnets to concentrate the magnetic flux from said magnet(s); and said magnet(s) defining at least three different directions of magnetization, the resultant flux in the pole piece towards the stator being non-coplanar with at least two of the directions of magnetization.

Abstract: A device may be configured for updating the programming of a control system of an electric rotary machine, the device having no screen. The device may include an electrical or optical connector element for connection to the control system, enabling data to be transferred between the device and the control system and a memory for containing data to be transferred into the control system and/or for loading data from the control system. The device may include a control member, with data being exchanged between the device and the control system in response to an action exerted manually on the control member.

Abstract: The following invention is an electromechanical system (1) that is to be connected to an electricity supply (7), comprising: an electric machine (2) that can operate as an independent generator with a rotating shaft, and a switching system (9) allowing i) in the first configuration, the electric machine to operate as a motor in the case where the connected device (4) is normally driven or as a generator in the case where the coupled device is normally driving, and ii) in the second configuration, the electric machine to operate as an independent generator, the electrical energy generated by the electric machine (2; 22) being dissipated in the machine and in a dissipative load (13).

Abstract: The present invention relates to a method of powering a single-phase asynchronous electric motor, comprising first and second windings, in which method one of the windings is powered by AC mains while the other winding is powered by an inverter that receives a rectified voltage from the mains and that is controlled in such a manner that said second winding is powered with a voltage of waveform that is offset relative to that from the mains.

Abstract: The invention relates to a synchronous electric motor comprising a stator (10) and at least one rotor (20) with permanent magnets (21), characterized by an embodiment with Xd>Xq; where Xd is the direct reactance and Xq the quadrature reactance.

Abstract: The present invention relates to a rotor for an electric rotary machine, the rotor comprising a hub having pole pieces placed thereon, and wherein: the pole pieces include a molded portion fitting closely around at least a portion of the shape of the hub and/or, the hub includes a molded portion fitting closely around at least a portion of the shape of the pole pieces, the hub including a reinforcement supporting the molded portion and/or the molded portion including reinforcing fibers or particles.

Abstract: The invention concerns a reversible current rectifier, for connection to part of a polyphase network and to a continuous bus comprising a plurality of rectifier cells each rectifier cell including a rectifying device and a on-way electronic switch connected in anti-parallel with the rectifier device, the rectifying devices of different cells being arranged so as to form one rectifier. Each rectifier cell comprises means for controlling the electronic switch of the cell arranged to control the latter in closure after detecting a conduction of the rectifying device of the cell so as to enable current to be returned to the network. The control means are arranged to receive a signal external to the cell, for controlling the opening of the electronic switch, derived from another rectifier cell.

Abstract: The invention relates to an electric machine comprising a stator (10, 40) provided with a plurality of teeth (11, 41), each tooth supporting at lest one individual coil (13, 46, 47), an external rotor (30) which is radially arranged outside the stator and provided with constant magnets, an internal rotor (20) radially arranged inside the stator, provided with constant magnets and connected to the external rotor (30). At least one of the external (30) and internal (20) rotors is disposed in a flux concentration.

Abstract: The present invention relates to a rotary electric machine comprising: a stator; a rotor having an axis of rotation, and comprising a tubular end wall defining two opposite braking surfaces; and at least one electromagnetic brake configured for bear simultaneously in a braking configuration against the braking surfaces.

Abstract: The present invention relates to a rotary electric machine comprising: a concentrated winding stator having teeth and coils placed on the teeth, the teeth having end faces that are convex towards the rotor; and a rotor comprising an armature defining a cylindrical surface and permanent magnets, the permanent magnets having inside faces that are cylinder portions matching the shape of the cylindrical surface of the armature, and outside faces that are plane and that face towards the stator.

Abstract: The present invention relates to a circuit for producing electricity, the circuit comprising: a first rectifier comprising inputs and an output; a second rectifier comprising inputs and an output, the inputs of the first and second rectifiers being for connection to an alternator so that phases of the alternator are connected in series with the inputs of the first and second rectifiers; at least one switch for short-circuiting the output of the second rectifier or at least a part of the inputs of the second rectifier; and a control unit for controlling the switching of the at least one switch so as to regulate the rectified voltage delivered by the circuit.

Abstract: A machine includes a motor that includes a stator carrying a concentrated winding wound on teeth and a rotor rotatable about the stator. The rotor includes a tubular casing and permanent magnets, and a pulley coupled to the rotor.

Abstract: The present invention relates to an electrical machine, comprising: a supporting structure; a stator cantilevered-out from the structure; and a rotor mounted to rotate on the structure about an axis of rotation in such a manner as to be capable of being driven by the stator, the supporting structure comprising a hollow central shaft substantially coaxial about the axis of rotation of the rotor, an electric cable for powering the stator traveling along the inside of the shaft, and the rotor having a drive surface for transmitting torque to at least one element that is to be driven, the drive surface being situated at least in part around the shaft.

Abstract: A method of manufacturing a magnetic circuit for an electrical machine, the method comprising: using a cutting station to cut out at least one strip of sectors that are interconnected by deformable connections; and using a winding station to wind the strip of sectors around a mandrel; wherein, between the cutting station and the winding station, there is a zone configured to enable the strip to deform so as to compensate for a difference in speed between a speed of the strip at an outlet from the cutting station and its speed at an inlet to the winding station.

Abstract: The present invention relates to a braking system for an electric motor, the braking system comprising: a chassis; and at least one brake supported by the chassis, the brake comprising: at least one brake disk connected via a fluted connection to a shaft driven by the motor; an armature that is movable in translation along an axis of rotation of the shaft; a plurality of armature-guiding spacers, at least one of the spacers being engaged at one end in a corresponding housing in the chassis, so as to enable the chassis to take up torque that is exerted on the brake during braking; a plurality of springs for urging the armature against the disk; and an electromagnet which, when powered, attracts the armature and moves it away from the disk against the action of the springs.

Abstract: The present invention relates to a safety device for an elevator comprising a cabin, a counterweight, a cabin drive motor, said motor having a rotor, and at least one power-failure electromechanical brake, the safety device comprising a control device arranged: to receive at least one information allowing emergency power to be applied to the brake in order to release the rotor and allow the cabin blocked between two floors to move under the effect of unbalance between the weight of the cabin and the weight of the counterweight; to receive at least one information enabling the speed of the cabin to be known; and to manage power supply to the brake in such a manner as to enable the cabin to move to an evacuation floor while preventing the speed of the cabin from exceeding a predefined limit, wherein the information enabling the speed of the cabin to be known is provided by at least one electrical magnitude from the motor.

Abstract: A device may be configured for updating the programming of a control system of an electric rotary machine, the device having no screen. The device may include an electrical or optical connector element for connection to the control system, enabling data to be transferred between the device and the control system and a memory for containing data to be transferred into the control system and/or for loading data from the control system. The device may include a control member, with data being exchanged between the device and the control system in response to an action exerted manually on the control member.

Abstract: The invention relates to a rotary electric machine including a stator, powered by a polyphase current, having a magnetic circuit with teeth forming intervening slots for receiving electrical conductors. The magnetic circuit is made up of an assembly of sectors defining air-gaps intersecting the teeth at half-width.

Abstract: A coil for an electric rotary machine includes a substantially flat bundle of insulated wires wound around a winding axis so as to form a plurality of superposed turns, the cross-section of the bundle in the superposed turns having a long dimension that extends substantially perpendicularly to the winding axis of the coil.