Abstract: The invention predominantly relates to a rotating electrical machine for a motor vehicle, comprising: a rotor having an even number of pole pairs Np; and a stator (10) comprising a body provided with slots and a three-phase winding (14) inserted into the slots in the stator body. The three-phase winding (14) comprises: at least a first group (G1) of portions of phases (U, V, W) and a second group (G2) of portions of phases (U, V, W) which are associated with a first set of at least three bridge arms (21.1); and at least a third group (G3) of portions of phases (U, V, W) and a fourth group (G4) of portions of phases (U, V, W) which are associated with a second set of at least three bridge arms (21.1).

Abstract: The invention relates mainly to an assembly comprising: —a combustion engine ring gear having a plurality of teeth, the said ring gear being defined by a modulus and a pressure angle, —a starter comprising a pinion (31) able to engage with the said ring gear of the said combustion engine, the said pinion (31) having a plurality of teeth (42) is defined by a modulus (Mp) and a pressure angle (alpha_p), characterized in that a pinion product which is the product of the modulus (Mp) of the said pinion (31) and the cosine of the pressure angle (alpha_p) of the said pinion (31) is greater than a ring-gear product equal to the product of the modulus of the said ring gear and the cosine of the pressure angle of the said ring gear.

Abstract: Pulley assembly (111) comprising a hollow shaft (112) with an axis X, the hollow shaft (112) being suitable for being mounted on a shaft of a rotating electrical machine, the hollow shaft comprising at least one thread or tapping (132, 133) and a collar (113) extending radially outwards, wherein said hollow shaft also includes: a nut (128, 129) screwed on the hollow shaft via the thread or tapping; a spring (126) mounted about a portion of the nut; at least one ball bearing (122, 123) tightly fitted to the hollow shaft; a pulley (130), tightly fitted to said at least one bearing, about the spring, the nut and the hollow shaft. The nut (128, 129) includes a radial shoulder (131) mounted between the spring (126, 127) and the ball bearing (122, 123), the spring being held axially between the collar (113) and the radial shoulder (131).

Abstract: A fan of a rotary electric machine. The fan has an axis of rotation and comprises a plurality of blades (101). At least one characteristic of the blades is variable in the direction of a circumference of the fan around the axis of rotation for at least four consecutive blades. The at least one characteristic is selected from the group comprising a spacing angle between a straight line passing radially via a characteristic point of one of the blades and the axis of rotation of the fan and a straight line passing via a corresponding characteristic point of an adjacent blade and the axis of rotation of the fan, a height of the blade, a length of the blade, and an angle of inclination between a straight line passing via two characteristic points of a blade, and a straight line passing via two corresponding characteristic points of an adjacent blade.

Abstract: The brush-holder regulator comprises a casing made from an insulating material suitable for being mounted on a rear bearing of an alternator and forming a one-piece assembly with at least one housing suitable for containing brushes allowing an electrical connection to be established with an excitation winding of a rotor of the alternator, an electronic control component (22) connected electrically to a trace circuit (21) overmoulded in the casing, and a cooling radiator (24) for the control component. According to the invention, the control component comprises a back electrode (225) on which the radiator (24) is mounted, the back electrode (225) and the radiator (24) being in electrical and thermal contact and rigidly attached to a portion (216) of the trace circuit.

Abstract: A rotary electric machine stator (2) includes a stator body (20) and a stator winding (22) supported by the stator body (20), in which the stator body extends around an axis (X) while being delimited by an internal radial surface (3) and an external radial surface (4), said stator bodies having a plurality of teeth (6) formed respectively between two slots (5) arranged in said stator body from the internal radial surface and extending axially to receive at least one stator winding element (22). The stator has at least one deformed tooth (6) which comprises, at its loose end (7) helping to define the internal radial surface, at least one protrusion (10) extending across an adjacent slot, said protrusion (10) being obtained by material deformation of said deformed tooth (6).

Abstract: The invention primarily relates to an assembly, in particular for a hybrid vehicle, wherein the assembly comprises; an enclosure (46) for receiving a coolant liquid and having an opening (49) for bringing the inside of the enclosure (46) into communication with the outside of the enclosure (46), a rotary electric machine (10) arranged in the enclosure (46) able to be cooled by the coolant liquid, an electrical connector element (51) arranged to be electrically connected to the rotary electric machine (10), the connector element (51) being sealingly mounted in the opening (49) of the enclosure (46) in such a way that the connector element (51) participates in the sealing that prevents the liquid from flowing from the inside of the enclosure (46) to the outside of the enclosure (46) via the opening (49).

Abstract: The regulating device (5) according to the invention for an excitation alternator (9) comprises a voltage feedback loop (6) and a temperature feedback loop (15) comprising means for measuring/estimating temperature supplying a current temperature (T), a comparator (18) generating a temperature error (?T) between a maximum permissible temperature (Tmax) and the current temperature, means for inputting a current speed of rotation of the alternator, a control module (19) supplying a percentage of a maximum permissible excitation (rmax) as a function of the temperature error and a speed correction supplied by speed correction means according to a predetermined correction law as a function of the current rotation speed.

Abstract: A voltage regulator with brush holder assembly (100) for a rotary electric machine intended for an automotive vehicle, which assembly comprises: —a brush holder comprising brushes that are capable of coming into electrical contact with a rotor of the rotary electric machine in order to apply an excitation signal thereto; —a microcontroller for regulating said excitation signal; —a body made of electrically insulating material, said body taking the overall shape of a T and in which said brush holder and said microcontroller are housed, characterized in that the voltage regulator with brush holder assembly (100) comprises two parts: —a first part (200) forming a central portion of the T-shaped body and extending along a first axis (z1-z2), said first part (200) comprising a housing (201) for accommodating the brush holder and a second part (300) forming a lateral portion of the T-shaped body and extending along a second axis (y1-y2) perpendicular to said first axis (z1-z2), said integrated circuit being housed

Abstract: The method for controlling a rotating electric machine according to the invention comprises a step of controlling the phase currents of the machine by means of a full-wave control (C). According to the invention, the full-wave control (C) is generated via a pulse width modulated signal of which the signal frequency is greater than an electric frequency of the machine. According to another feature, ascending or descending fronts (24, 25) of the pulse width modulated signal are synchronised with first and second crossings of first and second angular switching thresholds (S1, S2) by an electric position (?) of the machine and a duty ratio (?) of the pulse width modulated signal is periodically refreshed to the signal frequency.

Abstract: The electrical discharge circuit (106) includes: —two interface terminals (BA, BB), to which the capacitor (C) is intended to be connected and across which a capacitor voltage (uC) is intended to be present; —a current-consuming electrical circuit (108) connected between the two interface terminals (BA, BB) and designed to consume a discharge current (i) from the capacitor (C); and—an electrical control circuit (110) for controlling the current-consuming electrical circuit (108), the electrical control circuit (110) being connected between the two interface terminals (BA, BB) so as to receive the capacitor voltage (uC). The electrical control circuit (110) is designed: —to deactivate the current-consuming electrical circuit (108) when the capacitor voltage (uC) is above a predefined threshold; and—to activate the current-consuming electrical circuit (108) when the capacitor voltage (uC) across the two interface terminals (BA, BB) is below the predefined threshold.

Abstract: The electrical system (100) includes: —a capacitor (C); —an electrical power supply device (102); —an electrical power receiving device (104); —a current-consuming electrical circuit (108) designed to consume a current (i) entering via a first interface terminal (BA) and exiting via a second interface terminal (BB). The electrical system (100) being designed such that the current-consuming electrical circuit (108) consumes the discharge current (i) when the electrical power supply device (102) is connected to the terminals of the capacitor (C). The current-consuming electrical circuit (108) includes a transistor (Q1) arranged such that the consumed current (i) enters via a current input terminal (C1) of the transistor (Q1) and exits via a current output terminal (E1) of the transistor (Q1), and in that the current output terminal (E1) is connected to a control terminal (B1) of the transistor (Q1) in order to stabilize the transistor (Q1).

Abstract: The invention relates mainly to a rotary electrical machine comprising: a rotor (12); a device (51) for measurement of the angular position of the rotor (12); a stator (11) comprising: a body comprising a plurality of notches; a winding (24) comprising a plurality of phase windings, each having a winding input and a winding output; each phase winding being formed by a plurality of pins (45) inserted in the notches and forming a chignon (40); at least one connector (48) which connects two pins of a single winding; the connector (48) extending opposite the measurement element (52); the connector (48) comprising a portion which is situated radially between an outer periphery of the body (23) and a base of a notch.

Abstract: The invention relates mainly to an assembly comprising a brush cage and a spiral spring (36), the spiral spring (36) comprising an axis (Y), a wound part (37) wound about the axis (Y) and an arm (39) extending from one end of the wound part (37), the brush cage comprising at least one lateral wall provided with an opening for the passage of the arm (39) through the lateral wall so that one end of the arm (39) can press against at least part of an end face of a brush, wherein the arm (39) comprises a first portion (391) of which the width (L5) measured along the axis (Y) is different from the width (L6) of the wound part (37) measured along the axis (Y) of the spiral spring (36).

Abstract: The invention relates mainly to a rotary electric machine for a motor vehicle, having: —a casing (11), —an electronic assembly (47) mounted on the casing, —a protective cover (50) positioned around the electronic assembly (47), and —a screw (55) that extends along an axis (X?) and allows the cover (50) to be fastened to the casing (11) and/or electronic assembly (47). The protective cover (50) has at least one opening that forms a fastening zone into which there extends at least one tongue (56) delimiting a central opening (57) for the screw (55) to pass through. The screw (55) has a screw head (70) and a retaining groove (71) such that the tongues (56) are housed in said groove (71).

Abstract: The invention relates mainly to a rotary electric machine for a motor vehicle. The machine (10) comprises a shaft (13); a rotor (12); a stator (16) comprising a body (25) provided with slots, and a winding (26) inserted into the slots; a first bearing (37) and a second bearing (38) surrounding an assembly formed by the rotor and the stator and each comprising a housing (40, 44) for rotatably mounting the rotor shaft (13). The first bearing comprises a transverse flange (371) and a cylindrical wall (372) of axial orientation derived from an outer periphery of said flange. The second bearing comprises a transverse flange (48) closing the first bearing and at least one rim (63) projecting from the flange and forming a junction area (64) where it joins the first bearing. Furthermore, the stator body has a region (Z1) of shrink-fitting to the cylindrical wall.

Abstract: The present invention relates to a motor vehicle rotary electric machine (100) drive assembly, the drive assembly comprising a rotor shaft (2) extending along a longitudinal axis (X) and a connecting piece (4) providing connection between the shaft and the torque transmission system comprising a bore (41) for the passage of the rotor shaft, the drive assembly being characterized in that the bore comprises a first wall (41a) extending axially and a cylindrical second wall (41b) extending axially in alignment with the first wall, and in that the rotor shaft comprises:—a first surface (21) extending axially and cooperating with the first wall of the bore to centre the connecting piece around the rotor shaft; and—a second cylindrical surface (22) extending axially and provided with knurling, with a diameter (A) greater than the diameter (A?) of the second wall of the bore, the connecting piece being force-fitted onto the rotor shaft by means of the knurling.

Abstract: The method according to the invention involves a hot-forging step and a cold-forging step that occurs after the hot-forging step. A polar wheel (10, 11) incorporating a plurality of finite chamfers (102) formed on exterior parts of the polar teeth (10g, 11g) is produced during the hot-forging step. According to the invention, the cold-forging step involves substeps of placing the polar wheel in a die, cold die-stamping the polar wheel with a first and a second blow in the axial direction of the polar wheel, upsetting material onto interior parts of the polar teeth (10g, 11g) so as to form magnet-housing grooves (100) and magnet lips (101).

Abstract: The present invention provides a stator for a rotating electrical machine, in particular for a motor vehicle, the stator (15) comprising: —a body (27) having notches (37) which open axially into front (38) and rear (39) axial end walls of the body (27) and which are radially open in an inner wall (40) of the body (27), —at least two windings (43), each forming a phase of the stator (15), each winding comprising modulating wire turns which comprise a series of axial strands (44) received in a series of associated notches (37) and connecting strands (45, 46) which connect the successive axial strands (44) and extend alternately beyond the front axial end wall (38) and beyond the rear axial end wall (39). One winding has a shorter wire length than the other winding.

Abstract: The invention relates mainly to a brush cage (13) for a brush holder (10) of an electric motor comprising:—two lateral walls (26) and a connecting wall (28) connecting the two lateral walls (26),—in which cage at least one of the lateral walls (26) has an opening (43) for the passage of a spring arm,—the lateral wall (26) comprising the opening (43) having a length (L0) measured between a first end (51) intended to be furthest from a commutator and a second end (52) intended to be closest to the commutator, wherein the opening (43) comprises at least a first portion (431) between the two ends (51, 52) which widens out towards the second end (52).