Abstract:
L'invention porte principalement sur un dispositif isolant pour un collecteur (5) de machine électrique destiné à être emmanché à force sur un arbre (8) de rotor de machine électrique, ledit collecteur (5) comportant deux bagues collectrices (6a, 6b) connectées chacune à une trace (7a, 7b), caractérisé en ce qu'il comporte un élément de protection (2) destiné à être disposé au moins en partie entre ledit arbre (8) et lesdites bagues collectrices (6a, 6b), ledit élément de protection (2) étant configuré pour isoler, par rapport audit arbre (8), au moins une zone de connexion d'une des traces (7a, 7b) avec la bague collectrice correspondante (6a, 6b), avant surmoulage de l'ensemble.
Abstract:
A claw pole rotor (20) comprising: - a shaft (21), - first and second polar wheels (25, 26) fastened to said shaft (21), - a winding (17) provided with a winding insulator (27) and surrounded by said first and second polar wheels (25, 26), - a commutator provided with at least one commutator ring (28, 29), - a fan (31) fastened to the first polar wheel (25) and disposed between the winding (17) and the at least one commutator ring (28, 29), - at least one end-of-winding (17) wire (15, 16) being linked to one of said at least one commutator rings (28, 29), passing through a radial cavity (35, 36) provided between the fan (31) and the first polar wheel (25). The winding insulator comprises a clip (11) for retaining one of said at least one end-of-winding (17) wire (15, 16), - said retaining clip (11) being fastened to said winding (17) insulator (27) and comprising crimping means (62, 63) intended to be disposed in the radial cavity to crimp the part of the end-of-winding wire (15, 16) extending into said radial cavity and: - said retaining clip comprises means (57, 58) for bearing on the wall of the radial cavity in such a way that the crimping means clamp the end-of-winding wire (15, 16) when the crimping means are disposed in said radial cavity.
Abstract:
Disclosed herein is a rotor assembly for an electric machine. The rotor assembly includes a shaft, at least one slip ring, a field coil, a first pole segment, and a wire retainer. The at least one slip ring is attached to the shaft. The field coil surrounds the shaft such that the field coil has one or more wire sections in electrical communication with the at least one slip ring. The first pole segment rotates with the shaft. And, the wire retainer is disposed between the field coil and the at least one slip ring such that the wire retainer includes at least one opening, disposed along an outer periphery of the pole segment, for routing the one or more wire sections.
Abstract:
The RF communication system includes an antenna that receives/transmits RF signals, a PLL (730) that generates multi-phase clock signals having a frequency different from a carrier frequency and a reference signal having a carrier frequency, a demodulation-mixer (720) that mixes the received RF signals with the multi-phase clock signals having the frequency different from the carrier frequency to output signals having a frequency reduced relative to the carrier frequency, two stage amplification (740, 750) that amplifies a selected channel signal to a required dynamic level, and an A/D converting unit (770 A) for converting the RF signals from the mixing unit into digital signals. The two stage amplification can provide the selected channel signal with sufficient gain, even when an adjacent channel signal is output by the demodulation mixer (720) with greater amplitude or power.
Abstract:
A rotor for an electrical machine according to one embodiment of the present invention comprises a shaft (16) defining an axis of rotation of the rotor, and first and second pole pieces (12, 14) affixed to the shaft (16) for rotation therewith and together defining an interior cavity. The rotor additionally includes a slip ring (18) affixed to the shaft for rotation therewith. Further, the rotor comprises a field-generating coil (22) disposed within the interior cavity, the coil (22) comprising a plurality of turns of electrical wire (23), the electrical wire further having a section (26) extending to and electrically coupled to the slip ring (18). Also, the rotor has a retainer (36) disposed exterior to the cavity and adjacent the first pole piece (12), the retainer comprising a radially-extending channel (34) containing a portion of the section (26) of electrical wire (23).
Abstract:
Système de maintien (11) pour fil d'extrémité (15, 16) d'enroulement électrique de rotor, le système comprenant un logement (50) pour recevoir le fil, ce logement s'étendant entre deux parois latérales (52) reliées entre elles par une paroi de fond (53) pour le logement (50), et ce logement (50) débouchant vers l'extérieur par une ouverture (54) ménagée entre deux parois de maintien (55), chaque paroi de maintien (55) faisant respectivement saillie depuis une paroi latérale (52) et, dans un plan perpendiculaire à l'axe longitudinal (X) du logement (50), les parois de maintien (55) ayant une forme différente l'une de l'autre.
Abstract:
An electric connector assembly is provided that is designed to provide a simple and reliable electric connection between a source of electric power on an aircraft and a plurality of electrical connections, such as those from stator windings, in an electric drive means powering an aircraft landing gear drive wheel. The plurality of drive means electrical connections are individually connected to power distribution elements designed to significantly reduce the number of connectors required to establish an electrical connection between the drive means and an aircraft power supply. The reduced number of connectors is directed out of the wheel and guided along a path by a path guide element to a connector element designed to connect directly with a wire harness or other connection with an aircraft source of electric power. This electric connector design facilitates disconnection and reconnection when removal and remounting of the drive wheel is required.