Abstract: The invention relates to electromechanical assemblies comprising an alternator, especially of high power, typically greater than or equal to IMW, and a converter, the alternator comprising a rotor driven in rotation, by a wind turbine for example, and more particularly to wound rotor synchronous alternators. The drive can also take place by means of a tide-driven, hydraulic or marine-current-driven generator. An alternator comprises in a manner known per se a field winding, generally at the rotor, supplied with DC current either by split rings and brushes, or by an exciter, so as to generate in an armature winding, generally at the stator, an AC voltage.

Abstract: The present invention relates to a rotor for a rotary electric machine, comprising: a hub comprising a stack of sheets, permanent magnets arranged on the surface of the stack of sheets, pole shoes covering the magnets and an attachment means for holding the pole shoes on the hub.

Abstract: An electric machine including a casing and a terminal box attached to the casing. The terminal box includes two half-shells that are assembled one against the other, the half-shells being identical before they are made to form one or more cable ducts by the removal of one or more detachable portions provided for this purpose.

Abstract: A stator for a rotary electric machine, the stator including a jacket and a stack of stator laminations placed inside the jacket, subassemblies of laminations of the stack having extensions with flow channels for passing a cooling fluid therethrough, the subassemblies being disposed in such a manner that fluid flowing along the stack is subjected to a succession of passes within the channels and of passes through wide zones extending between the channels, the stack laminations being arranged in such a manner that for at least one extension, and better for the majority, or even all of the extensions of a subassembly, the flow section made available to the flow of cooling fluid within the extension is greater than the flow section defined by the space extending radially between the extensions and the jacket.

Abstract: A motor provided with a secondary driving system including: a casing; a dented wheel permanently rotating during the normal operation of the motor together with the rotor inside the casing; an endless screw that can be brought into a clutch engagement position in which the screw meshes with the dented wheel and in which the rotation of the screw drives the dented wheel in a non-reversible manner and that can be removed from said position in order to allow the normal operation of the motor; a driving member for manually rotating the endless screw, the driving member rotating about the same rotation axis as the endless screw and rotating the latter by direct engagement.

Abstract: The present invention provides a rotor for a rotary electric machine, the rotor extending along a longitudinal axis and comprising: at least two poles defining between them an inter-pole space; and windings of electrical conductors wound around the poles, said windings including straight portions extending along the longitudinal axis of the rotor; at least one pole of the rotor, and in particular each pole of the rotor, including a spacer placed along at least a fraction of the straight portion between at least two conductor groups of the windings so as to form at least one cooling channel between the two conductor groups, enabling a cooling fluid to flow longitudinally and/or transversely within the windings, the spacer including at least one spacer element presenting a cross-section that is hollow, defining the cooling channel at least in part.

Abstract: A motor having a shaft bearing a rotor, a pulley driven by the shaft, at least one caliper brake acting on a wall turning with the pulley, and at least one axial brake.

Abstract: A rotor (100) having a first plurality of laminates (110), comprising a first plurality of protrusions (120) located at a periphery of each of the first plurality of laminates, and a second plurality of laminates (1101), arranged differently from the first plurality of laminates (110) around a shaft hole (132), comprising a second plurality of protrusions (120?) located at a periphery of each of the second plurality of laminates, wherein the first plurality of protrusions are asymmetric and/or angularly offset from the second plurality of protrusions, and wherein the second plurality of protrusions are asymmetric and/or angularly offset from the first plurality of protrusions. The rotor further having a plurality of magnets (115), each inserted between the first plurality of protrusions and/or the second plurality of protrusions, wherein reactive forces operate to hold the plurality of magnets.

Abstract: A rotating electrical machine to be connected to a polyphase power grid, having: a polyphase synchronous motor including a rotor with permanent magnets and a polyphase asynchronous motor axially coupled together, and a switching system arranged so as to electrically connect the asynchronous motor to the grid during the machine starting phase in order to bring the synchronous motor to a speed that enables the motor to operate while connected directly to the grid, and to electrically connect the synchronous motor to the grid during a subsequent phase.

Abstract: The present invention relates to a control device (1) for an electricity generator set, the generator set comprising: an engine fitted with at least one actuator (2) for controlling fuel admission; an alternator driven by the engine; and a speed regulator (4) for the engine and controlling the actuator(s); the control device being arranged to detect a variation in the load on the alternator as a function of at least one voltage thereof and to control the actuator(s) in such a manner as to compensate for the load variation thus detected; the control device delivering a control signal that acts directly on the actuator(s) taking the place of or being superposed on an output signal of the speed regulator when a variation in load is detected; or the control device delivering a control signal that acts on the actuator(s) via at least a portion of the speed regulator by taking the place of a speed regulator signal.

Abstract: An electric rotating machine including a rotor rotating relative to a stator, the rotor rotating a first fan placed at a first end of the stator, and a second fan placed at a second end of the stator opposite to the first end, the first and second fans being configured to generate an air flow from the first fan to the second fan through the rotor and the stator, the first fan comprising an external ring connecting the radial ends of blades together.

Abstract: A rotor for rotating an electric machine having permanent magnets and flux concentration, including a shaft extending along the rotational axis of the rotor, a rotor body placed on the shaft, the rotor body having a central opening for the mounting thereof on the shaft; radially oriented recesses wherein the permanent magnets are placed; and in at least one angular space separating two consecutive recesses, at least one cavity leading neither to the central opening nor to the two consecutive recesses, the cavity or cavities located in the space occupying an angular area around the rotational axis of the rotor greater than or equal to half of the angular area of the space.

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: The present invention relates to an open rotary electric machine having a rotor mounted to rotate relative to at least one stator and co-operating with the stator to define at least one airgap, the rotor being suitable for rotating at least one fan having at least two channels, said fan including a first channel generating a first cooling air stream passing through the stator, and a second channel generating a second cooling air stream passing through the rotor, the fan including a solid web separating the first and second air streams.

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 provides a rotor for a rotary electric machine, the rotor extending along a longitudinal axis and comprising: at least two poles defining between them an inter-pole space; and windings of electrical conductors wound around the poles, said windings including straight portions extending along the longitudinal axis of the rotor; at least one pole of the rotor, and in particular each pole of the rotor, including a spacer placed along at least a fraction of the straight portion between at least two conductor groups of the windings so as to form at least one cooling channel between the two conductor groups, enabling a cooling fluid to flow longitudinally and/or transversely within the windings, the spacer including at least one spacer element presenting a cross-section that is hollow, defining the cooling channel at least in part.

Abstract: The present invention provides an electricity generator for a lighting tower having a plurality of discharge lamps, each lamp being of power greater than 750 W, the generator being arranged to be driven by an engine, the generator being a multiphase generator having n phases, where n is an even integer, each phase being independent in a magnetic circuit that is common to all of the phases and being configured to power one lamp, the generator comprising a rotor with permanent magnets, having 3 n poles, and a stator concentric with the rotor and subjected to the radial magnetic flux from the magnets, the stator comprising a stack of laminations of silicon iron having a silicon content greater than 0.5% and of individual thickness greater than 0.35 mm, defining 4 n magnetic circuit teeth, with every other tooth carrying a winding.

Abstract: A stator for a rotary electric machine, the stator including a jacket and a stack of stator laminations placed inside the jacket, subassemblies of laminations of the stack having extensions with flow channels for passing a cooling fluid therethrough, the subassemblies being disposed in such a manner that fluid flowing along the stack is subjected to a succession of passes within the channels and of passes through wide zones extending between the channels, the stack laminations being arranged in such a manner that for at least one extension, and better for the majority, or even all of the extensions of a subassembly, the flow section made available to the flow of cooling fluid within the extension is greater than the flow section defined by the space extending radially between the extensions and the jacket.

Abstract: A motor provided with a secondary driving system including: a casing; a dented wheel permanently rotating during the normal operation of the motor together with the rotor inside the casing; an endless screw that can be brought into a clutch engagement position in which the screw meshes with the dented wheel and in which the rotation of the screw drives the dented wheel in a non-reversible manner and that can be removed from said position in order to allow the normal operation of the motor; a driving member for manually rotating the endless screw, the driving member rotating about the same rotation axis as the endless screw and rotating the latter by direct engagement

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.