A system for transferring current between a rotating element and a fixed element, comprising—a support in the general shape of a sheet (10) comprising a conductive portion (11) electrically connected to the fixed element—a brush holder (20) mounted on the support (10) and supporting a brush (30) that is pushed into contact against the rotating element—electrical connection means (42) for connecting the conductive portion (11) of the support to a cable (40) that is joined to the brush (30), wherein a resistive element (12) is situated between the brush (30) and the conductive portion (11) of the support (10) and prevents current from flowing directly between the conductive portion and the brush.

A heat-generating-component cooling flow passage and a bearing cooling flow passage are formed by mounting a flow passage cover to a rotor unit side of a rear bracket-cum-cooler. An arrangement region of the bearing cooling flow passage in an axial direction of the rotary shaft is arranged so as to overlap with at least a part of an arrangement region of a rear bearing in the axial direction of the rotary shaft. The heat-generating-component cooling flow passage is arranged so as to overlap with at least a part of an arrangement region of a heat generating component when viewed in the axial direction of the rotary shaft. A stator core is connected to the heat-generating-component cooling flow passage through the rear bracket-cum-cooler.

Example generator brush adapters include a plate configured to mount to a static support structure and to couple to a brush assembly, such that the brush assembly is mounted to the static support structure along a single degree of freedom.

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.

The invention relates to a connection plate for an electric machine, which can be connected to a stator or a stator-side component, wherein at least one axially protruding pressing element is integrally formed on the connection plate.

A slip ring assembly includes a housing having a stator that rotatably supports a rotor. The rotor includes conductive disks that are electrically connected to respective conductors extending through a rotor shaft. The stator includes brushes that slidably and electrically engage the conductive disks. The one or more brushes are electrically connected to stator conductors extending at least partially through the stator. Electrical pathways are defined and extend from the stator conductors, the brushes, the conductive disks, and the respective conductors in the shaft. A smart board is connected to the stator and includes electronic components configured to monitor operation of the slip ring assembly and provide signals to an external source. The smart board is electrically connected to, and powered by, electrical power that is present and available on the stator conductors.

The present inventive concept relates to a brush holder for electrical machines comprising a clamping piece comprising a first mounting part and a second clamping part, which when assembled define a clamping hole, which is adapted to be assembled around a spindle; and two brush holder arms, wherein a proximal end of said arm is pivotally mounted on the first mounting part of said clamping piece, and wherein a distal end of said arm is adapted to receive and retain a brush, and wherein said arms have an upper side which is opposite to a lower side facing a slip ring; at least one biasing spring which spring is adapted to act upon said brush holder arms in such a way that said brush holder arms move pivotally towards a slip ring, and when in use presses said brushes against the slip ring; at least one conductive wire connecting the brush to the clamping piece; and wherein a brush holder arm locking mechanism is arranged at or along the upper side of each respective brush holder arm, that said locking mechanism is adapted to be inserted into a slot arranged in the second clamping part; and wherein a brush locking pin is arranged to retain the brush in said brush holder arm, which pin when in use is provided in corresponding bores arranged in the brush holder arm and the brush, wherein said brush locking pin comprises a pipe portion and a spring portion, wherein said spring portion is arranged inside the pipe and has a portion protruding on the outside of said pipe portion from a slot in a wall of said pipe; and wherein said mounting part of said clamping piece is provided with a brush arm stop, arranged to limit a pivot movement of the brush holder arm in a direction towards a slip ring.

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 in said second part (300).

A brush holding assembly for an excited-rotor electric machine includes a casing including two ducts flanking each other and developing along a direction between first and second ends, at least two brushes each housed capable of sliding in a respective duct and projecting outwardly to the second end and a connecting member arranged to connect with an electric current generation unit associated with said casing at the first end. The assembly also includes presser members associated with the brushes and configured to push the brushes towards the second end to keep them pressed on the respective tracks of a rotating manifold of a rotor and at least two conductive elements developing along the direction, each operatively interposed between a respective brush and the connecting member and configured to deform along the direction in order to follow the movement of the brush imparted by the presser members.

In the present invention, junction capacitance is increased by stabilizing the junction capacitance of rotating electrodes such that a short circuit does not occur between the electrodes. Provided is a rotating electrode unit comprising a rotor electrode unit in which one or more rotor electrodes and one or more rotor spacers are alternately stacked, and a stator electrode unit in which one or more stator electrodes and one or more stator spacers are alternately stacked, wherein the rotating electrode unit is configured such that when the rotor electrodes are power transmitting electrodes, the stator electrodes are power receiving electrodes, when the rotor electrodes are power receiving electrodes, the stator electrodes are power transmitting electrodes, the rotor electrode unit and the stator electrode unit are combined in a nesting arrangement so as to be mutually rotatable, at least the outer peripheral section of the rotor electrodes is constituted by a member comprising a magnetic body, and the stator spacers have a magnet which attracts the outer peripheral section of the rotor electrodes via magnetic force.