Abstract: A bearing for a rotating electric machine. The bearing includes a plastic body and at least one electrical conductor fixed to the plastic body in a non-detachable manner.

Abstract: A winding for an active part of a rotary electric machine having at least one phase system. The winding includes a plurality of phases each including a first power supply pin and a second power supply pin each forming a phase input or output, each power supply pin including a power supply end that extends outside the slot and extends a conductive segment that extends inside the slot. At least one portion of a first power supply end is arranged on an inner periphery of the winding, the first end extending a conductive segment arranged in an external layer and at least one portion of a second power supply end is arranged on an outer periphery of the winding, said second end extending a conductive segment arranged in an internal layer, the inner periphery being closer to the axis than the outer periphery and the internal and external layers forming edge layers.

Abstract: The invention mainly relates to a rotating electrical machine (10) comprising: a rotor (12) provided with a rotor winding (13); a stator (11) provided with a winding (14) having a plurality of phases; a converter (16) comprising rectifying components (17) to which the phases of the stator (11) are connected; a voltage regulator (24) for adapting an excitation current (lexc) applied to the rotor winding (13) according to a difference between an output voltage (Liait) and a reference voltage; at least one current sensor (27) arranged at the output of the rotating electrical machine (10) or on at least one phase of the rotating electrical machine (10); and a diagnostic module (30) that can detect a malfunction of the rotating electrical machine (10) on the basis of a current measurement provided by the current sensor (27).

Abstract: The invention mainly relates to a rotating electrical machine (10) comprising: a rotor (12) provided with a rotor winding (13); a stator (11) provided with a winding (14) having a plurality of phases; a converter (16) comprising rectifying components (17) to which the phases of the stator (11) are connected; a voltage regulator (24) for adapting an excitation current (lexc) applied to the rotor winding (13) according to a difference between an output voltage (Liait) and a reference voltage; at least one current sensor (27) arranged at the output of the rotating electrical machine (10) or on at least one phase of the rotating electrical machine (10); and a diagnostic module (30) that can detect a malfunction of the rotating electrical machine (10) on the basis of a current measurement provided by the current sensor (27).

Abstract: A rotor for a rotary electrical machine, fitted such as to rotate around an axis (X), and comprising a pair of magnet wheels (17) which each have a flange (18) and a plurality of magnetic poles (19). Each magnetic pole (19) extends axially from the flange (18) towards a free end (26), and has an outer surface (27). The outer surface (27) of at least one magnetic pole (19) of at least one magnet wheel (17) has at least one decreasing segment (29). The decreasing segment (29) is configured such that a radius between the said outer surface (27) and the axis (X) of the rotor (4) decreases, when going along the said decreasing segment (29), towards the free end (26) of the said magnetic pole (19).

Abstract: The invention relates to a device for controlling an alternator of the type that controls a DC voltage (B+A) generated by the alternator (11) according to a predetermined set voltage (U0) by monitoring the intensity of an energizing current (IEXC) flowing through an energizing circuit of the alternator. According to the invention, the device includes a voltage-control loop (7) and a temperature-control loop (17) which comprises a temperature sensor supplying a current temperature (T) of components of the alternator, a subtracter (19) supplying a temperature error (?t) between the current temperature (T) and a maximum acceptable temperature (Tmax) and a control module (20) supplying a maximum admissible energizing percentage (rmax) in accordance with the temperature error according to a predetermined control law.

Abstract: The invention relates to a stator (13) for an alternator or an electric machine, which comprises: a cylindrical hub (14) in which a plurality of slots (201) that extend in the axial direction are formed, and a coil (12) mounted in the slots; in which the stator core (14) comprises: a cylindrical base portion (203) forming a cylinder head (203), a plurality of teeth (202) arranged such as to extend from the base portion towards an axial center (X-X), the plurality of slots (201) being defined by the base portion and by an adjacent pair of the teeth (202). For each notch (201) the width at the opening of the notch (l_eo) is smaller than the width (l_ec) at the cylinder head (203).

Abstract: The invention relates to a device for controlling an alternator of the type that controls a DC voltage (B+A) generated by the alternator (11) according to a predetermined set voltage (U0) by monitoring the intensity of an energising current (IEXC) flowing through an energising circuit of the alternator. According to the invention, the device includes a voltage-control loop (7) and a temperature-control loop (17) which comprises a temperature sensor supplying a current temperature (T) of components of the alternator, a subtracter (19) supplying a temperature error (?t) between the current temperature (T) and a maximum acceptable temperature (Tmax) and a control module (20) supplying a maximum admissible energising percentage (rmax) in accordance with the temperature error according to a predetermined control law.

Abstract: A rotor for a rotary electrical machine, fitted such as to rotate around an axis (X), and comprising a pair of magnet wheels (17) which each have a flange (18) and a plurality of magnetic poles (19). Each magnetic pole (19) extends axially from the flange (18) towards a free end (26), and has an outer surface (27). The outer surface (27) of at least one magnetic pole (19) of at least one magnet wheel (17) has at least one decreasing segment (29). The decreasing segment (29) is configured such that a radius between the said outer surface (27) and the axis (X) of the rotor (4) decreases, when going along the said decreasing segment (29), towards the free end (26) of the said magnetic pole (19).

Abstract: A polyphase stator for an internally ventilated rotating electrical machine comprises a body (14) provided with slots and carrying a coil (12) having at least one winding per phase. A plurality of pairs of lateral branches are mounted in a slot of the body (14). A plurality of connecting heads (50 to 55) extend outside the body (14) so as to form a first lead-out (42) and interconnect each pair of lateral branches. A plurality of coupling feet (150 to 155) are offset circumferentially with respect to the plurality of connecting heads and extend outside the body (14) so as to form a second lead-out (43) and interconnect each pair of lateral branches. One of the pluralities has a generally pointed shape and has an axial length of between 15 and 20 mm. The stator is used with an alternator or alternator-stator for a motor vehicle. An internally ventilated electrical machine is equipped with the stator.

Abstract: A polyphase stator for an internally ventilated rotating electrical machine comprises a body (14) provided with slots and carrying a coil (12) having at least one winding per phase. A plurality of pairs of lateral branches are mounted in a slot of the body (14). A plurality of connecting heads (50 to 55) extend outside the body (14) so as to form a first lead-out (42) and interconnect each pair of lateral branches. A plurality of coupling feet (150 to 155) are offset circumferentially with respect to the plurality of connecting heads and extend outside the body (14) so as to form a second lead-out (43) and interconnect each pair of lateral branches. One of the pluralities has a generally pointed shape and has an axial length of between 15 and 20 mm. The stator is used with an alternator or alternator-stator for a motor vehicle. An internally ventilated electrical machine is equipped with the stator.

Abstract: A fiction clutch device comprising a flywheel with a front end designed to be fixed to a vehicle crankshaft (11) and a rear end in the form of a hollow-shaped reaction plate (4) with a central recess (39) externally defined by a friction surface (37) and a friction disc (20), including at its external periphery at least a friction lining (16) to be in contact with the reaction plate (4) friction surface (37). The friction lining (16) is integral with a support (21) elastically coupled via a torque damper (20a) to a central hub (15) designed to be interlocked in rotation with a driven shaft. The torque damper (20a) penetrates into the reaction plate (4) central recess (39) and the flywheel (13) bearing between its front and rear ends the rotor (6) of a rotating electric machine (2) comprising a fixed stator (5).

Abstract: An alternator having a rotor and a stator is described. The stator includes a cylindrical body with a plurality of phases. Each of the plurality of phases includes a phase input located at least partially outside of the cylindrical body, where the phase input is formed of a bar. The bar includes a longitudinal surface extending along at least a part of the bar, a first segment crossing the cylindrical body, and a second segment extending from an axial side of the cylindrical body. Each of the plurality of phases further includes a phase output located at least partially outside of the cylindrical body and conducting elements crossing the cylindrical body and forming at two axially opposite sides of the body, respectively, a first chignon and a second chignon. The conducting elements are electrically connected to form at least one winding connecting the phase input to the phase output.

Abstract: The invention relates to an alternator for a motor vehicle including a stator (13) equipped with a body (14) carrying several phases each comprising, on the one hand, an inlet (E1 to E?3) and an outlet (S1 to S?3) installed outside the body (14) of the stator (13), and, on the other hand, electrically conducting elements, which are arranged in a network on either side of the body (14) of the stator (13) so as to form a first (12) and a second (12?) bun and which pass through the said body, in which the electrically conducting elements are linked together to form the said networks and connect the inlet of the phase to the outlet of the phase by forming at least one winding. According to the invention, one of the buns (12, 12?), on one side of the body (14) of the stator (13), carries three inlets (E1 to E3–E?1 to E?3), an electrically conducting linking part (50, 51) linking the said inlets electrically together.

Abstract: The invention concerns an arrangement for welding a rotating electrical machine winding consisting of a plurality of conductive segments supported on a supporting body (1) so that the ends of each pair of conductive segments to be welded are juxtaposed in a radial direction and arranged in radial rows (R) circumferentially offset relative to one another, said welding arrangement including an equipment for flanging the ends of the conductive segments to be welded, comprising circumferential locking means formed by cam-shaped portions (19) of flanging members (13, 13?), a cam portion (19) being configured so as to be urged to come into clamped position between the ends of two radial rows (R) by rotation of the flanging member. The invention is applicable to a motor vehicle alternator.

Abstract: Current rectifying equipment for rotary electrical machines has a rear bearing, of the type comprising a plurality of positive diodes (2) supported by a support (1) in the form of a plate, a plurality of negative diodes (7) supported by the rear bearing (6) of the machine, a device (9) for connecting the positive and negative diodes together, and structure for generating a forced axial stream of a coolant fluid, the support (1) for the diodes carrying cooling fins (4) which extend in the axial stream (F1) of the coolant fluid in the radial direction of the machine. The equipment includes means for effecting mixed cooling of the support for the negative diodes by convection and conduction. The invention can be used for alternators for motor vehicles.

Abstract: The invention concerns an alternator, in particular for motor vehicle, comprising a stator (13) provided with a cylindrical body (14) bearing several phases (P), each phase comprising an input (E1 to E3) and an output, and electrically conductive interconnected elements (50) connecting the phase inputs to the phase output, the inputs (E1 to E3) consisting of rods having at least one longitudinal flat surface (21), each input including a first segment (25) passing through the body (14) of the stator (13) and a second end segment (26) extending from an axial side of said body (14), the second segments (26) of the inputs (E1 to E3) are twisted, the flat surface (21) of each input (E1 to E3) extending along the first segment (25) in a radial plane, and extending along the second end segment (26) either to form a cylindrical portion coaxial with the body (14) of the stator (13) or in a plane tangential to a cylinder coaxial with the body (14) of the stator (13).

Abstract: The invention relates to alternators for a motor vehicle, of which a stator comprises a cylindrical body, several phases each formed by a plurality of electrically conducting elements, the cylindrical body comprising radial slots for accommodating at least four phase-conductor elements forming at least four layers of conductor elements, each conductor element including two branches placed in slots each in a predetermined layer and a head forming a U-shape seen in the peripheral direction, the half of the conductor elements which are engaged by their first branches in a slot being engaged by their second respective branches in the same other slot. According to the invention, at least first and second conductor elements of such half are such that the radii of curvature of the U-shapes of the two conductor elements are substantially identical.

Abstract: The invention concerns a current-rectifying arrangement for rotary electrical machines of the type comprising a support (50, 51, 51?) for a plurality of positive diodes (66), a support for a plurality of negative diodes, forming part of the rear bearing of the machine, and a device for cooling by the creation of a forced axial flow of a cooling fluid through the rectifying arrangement, the support for the positive diodes carrying radial cooling fins (60) on its front face oriented towards the axis of the machine; the positive diode support device (66) being produced in the form of at least one moulded piece (50, 51, 51?), whose face oriented towards the aforementioned axis carries fine cooling fins (60). The invention can be used in alternators for motor vehicles.

Abstract: The invention concerns a current-rectifying arrangement for rotary electrical machines of the type comprising a support (50, 51, 51′) for a plurality of positive diodes (66), a support for a plurality of negative diodes, forming part of the rear bearing of the machine, and a device for cooling by the creation of a forced axial flow of a cooling fluid through the rectifying arrangement, the support for the positive diodes carrying radial cooling fins (60) on its front face oriented towards the axis of the machine; the positive diode support device (66) being produced in the form of at least one moulded piece (50, 51, 51′), whose face oriented towards the aforementioned axis carries fine cooling fins (60).