Abstract: An electric motor includes a housing with a tubular wall extending in an axial direction of the housing and a closures positioned at opposite axial ends of the tubular wall, a stator fixedly mounted inside of the housing, a rotor rotatably mounted inside of the housing, and a bearing rotatably supporting the rotor. At least one of the closures includes a rotor supporting portion. The rotor supporting portion includes a through hole configured to receive a portion of the rotor. The through hole has a triangular or polygonal shape, and a radius of an inscribed circle of the triangular or polygonal shape of the through hole is larger than a radius of the portion of the rotor received in the through hole.

Abstract: A claw-pole motor having a rotor assembly orientated about a longitudinal axis, a stator assembly having a first plurality of stator teeth and a second plurality of stator teeth orientated radially about the longitudinal axis and extending axially in opposite directions to each other and alternating about the longitudinal axis, a first gap in the stator assembly orientated about the longitudinal axis, a second gap orientated about the longitudinal axis and extending both axially and radially between the first plurality of stator teeth and the second plurality of stator teeth, first electromagnetic windings disposed in the first gap and second electromagnetic windings disposed in the second gap, the first and second windings configured to be selectively energized to exert a torque on the rotor assembly.

Abstract: A wheel support bearing assembly includes a wheel support bearing and a power unit. The power unit is that of an outer rotor design in which a stator is located at an outer periphery of the wheel support bearing and a rotor is located radially outward of the stator. A radial extension of the entire power unit is sized to be radially inward of a peripheral section of a brake rotor. An entirety of the power unit, excluding a mount part thereof to a hub flange, is sized to be situated in an axial range between the hub flange and a mount surface, on an inboard side of the wheel support bearing. The rotor includes an outer shell magnetic body, which is made from soft magnetic material and forms an outer shell of the power unit, and permanent magnets that are provided to the outer shell magnetic body.

Abstract: The present invention relates to an arrangement (O1, S1) of an outer rotor electric machine for reducing eddy current losses of the outer rotor electric machine (I). The outer rotor electric machine comprises a rotatably arranged rotor (10) and a stator (20). Said rotor comprises an outer rotor portion (12) surrounding said stator (20) or part of said stator and a wheel like end wall portion (14). One end (22a) of said stator (20) is arranged to face said end wall portion (14). The arrangement comprises a plurality of openings (O1) distributed on said end wall portion (14) so as to reduce appearance of eddy currents associated with said end wall portion (14) during operation of said electric machine (I). The present invention also relates to an outer rotor electric machine. The present invention also pertains to a platform.

Abstract: The present invention relates to an in-wheel motor.

Abstract: The present invention relates to an in-wheel motor driving apparatus for reducing weight, improving Hall sensor assembly performance, and reducing a defect rate. According to one embodiment of the present invention, the weight of an in-wheel motor can be reduced by separating a suspension housing and a shaft and applying different materials thereto. Furthermore, the ease of assembling a Hall sensor can be improved, and the defect rate can be reduced.

Abstract: A lubricant supported electric motor includes a stator presenting an outer raceway and a rotor extending along an axis and rotatably disposed within the stator. The rotor presents an inner raceway disposed in spaced relationship with the outer raceway to define a gap therebetween, and a lubricant is disposed in the gap for supporting the rotor within the stator. At least one of the outer raceway or the inner raceway is movable radially towards or away from the other to adjust the gap and optimize operation of the lubricant supported electric motor.

Abstract: A rotor for a machine has a plurality of rotor segments, each rotor segment forming at least one rotor pole and having a plurality of permanent magnets interior to the rotor and at least one saturatable bridge section for each permanent magnet in the rotor segment, each saturatable bridge section comprising a protrusion between air regions separating a north pole and a south pole of the permanent magnet to cause a portion of magnetic flux from the permanent magnet to traverse the saturatable bridge and cause a majority of the permanent magnet flux through an air gap of a rotor-stator interface between the rotor and a stator of the machine and through a stator pole.

Abstract: A stator for an electric machine includes a generally cylindrical stator core having a plurality of circumferentially-spaced and axially-extending core teeth that define a plurality of circumferentially-spaced and axially-extending core slots in a surface thereof, a main winding having a plurality of coils, each of the coils including a plurality of turns occupying the plurality of slots in the stator core, and a tertiary excitation winding having a plurality of coils, each of the coils including a single turn occupying at least a subset of the plurality of slots in the stator core. The coils of the main winding are unevenly arranged in the plurality of slots.

Abstract: A shaft-hub connection including a hub element and a shaft element is provided. The hub element includes a hub. The shaft element includes at least one first elongated region arranged in at least one second elongated region of the hub and is at least rotationally fixed to the hub element by way of a longitudinal press-fit including the elongated regions. The longitudinal press-fit has at least one first excess region with a first excess, and at least one second excess region, following the first excess region in the circumferential direction of the shaft element, with a second excess that is smaller than the first excess.

Abstract: Disclosed within are a structure and method for forming a component for a rotor to be used in an electric machine. The formed rotor components can include a rotor assembly or rotor shaft. The rotor assembly can include a plurality of poles spaced about a rotor core. The plurality of poles can include a pole shoe or pole body. Quasi-laminations that can result in a unitary structure that includes support structures can be used to form all or a portion of the pole shoe or pole body.

Abstract: A motor includes a stator having a winding, and a rotor. The rotor rotates by receiving a rotational magnetic field generated by drive current supplied to the winding. The winding includes a first winding and a second winding, the first and second windings both being excited at the same timing by the drive current. The first winding and the second winding are connected in series. The rotor includes a first pole section and a second pole section. The second pole section faces the second winding at the rotation position of the rotor at which the first pole section faces the first winding. The magnetic force exerted on the stator by the second pole section is weaker than that exerted by the first pole section.

Abstract: An EC motor with a stator and a rotor mounted to a shaft. The motor has a cooling system, an over molded stator housing, and an optimized rotor. The stator has teeth with wound electromagnetic coils. The teeth and coils are distributed circumferentially with gaps between adjacent coils. The stator is over molded with plastic that forms axially oriented cooling passages between adjacent coil sections. An impeller fan then draws air into the motor through air inlets connected to air passages. The impeller fan directs the air through the axially oriented cooling passages in the stator and out air outlets. An optimized internal rotor has permanent magnets and silicon steel laminates spaced circumferentially and extending outwardly from a central hub. Rectangular shaped magnets are interposed in the gaps between the laminates. Wedge-shaped magnets are aligned radially with the laminates and between the laminates and the hub.

Abstract: Embodiments disclosed herein describe methods for an improved electrical connector system.

Abstract: A rotor of an axial flux motor reduces a cogging torque and torque ripple, and is disposed facing a stator. The rotor includes: a rotation shaft; a rotor core having the rotation shaft connected thereto by passing through a center the rotor core; a plurality of seating grooves concavely formed on one surface of the rotor core facing the stator while being spaced apart from each other at equal intervals along a circumferential direction of the rotor core; and a plurality of protrusions formed on inner wall surface of each of the plurality of seating grooves such that the plurality protrusions face a center of each of the plurality of seating grooves; and a plurality of magnets pressed into and coupled to an associated one of the plurality of seating grooves while plastically deforming the plurality of protrusions of the rotor core.

Abstract: A motor includes a support frame, a stator, a bearing member, and a rotor. The support frame includes first and second tubular parts, and a vent hole. The second tubular part is disposed radially outside the first tubular part. The vent hole, extending axially, is provided between the first and second tubular parts. The stator is disposed radially outside the second tubular part, and supported by the second tubular part. The bearing member is disposed inside and supported by the first tubular part. The rotor includes a rotor frame, a shaft, and a permanent magnet. The rotor frame is disposed on a first side with respect to the support frame in the axial direction. The shaft is fixed to the rotor frame. The shaft is attached rotatably to the support frame through the bearing member. The permanent magnet is disposed radially outside the stator, and supported by the rotor frame.

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: A generator including a stator winding, a rotor positioned radially inside the stator winding, including multiple coil assemblies each using a flat wire, a primary termination plate residing radially inside the rotor configured to connect a wire of a coil assembly to an adjacent wound coil and a secondary termination plate residing radially inside the rotor configured to connect a wound coil to an adjacent wound coil and connect the wound coil to a terminus connection.

Abstract: The present disclosure discloses an electric-machine housing structure, wherein the electric-machine housing structure includes an outer housing, an inner housing and a plurality of intermediate pieces provided between the outer housing and the inner housing; and the intermediate pieces are overall hollow arcuate structures or annular structures, upper surfaces and lower surfaces of the intermediate pieces are provided with a plurality of protrusions and/or grooves, the protrusions and/or grooves of the upper surfaces match with and are fixed to grooves and/or protrusions on an inner circumferential face of the outer housing, and the protrusions and/or grooves of the lower surfaces match with and are fixed to grooves and/or protrusions on an outer circumferential face of the inner housing.

Abstract: Various embodiments associated with a segmented magnetic core are described. The segmented magnetic core can be made up of multiple singular structures so as to allow an individual singular structure to be removed with ease and without disturbing another magnetic core. This modular core design allows for a significant reduction in motor housing weight due to compatibility of the design with lightweight materials and the potential absence of extensive housing when so designed. This modular core design can be incorporated into a motor or a generator and this modular core design can be accomplished, in one example, by way of stacking and/or interlocking employing low cost assembly. In one example, a motor or a generator uses sensors to detect an operational failure in a magnetic core, notifying a user early of the failure.