Abstract: A generator slot wedge is described. The slot wedge includes a surface and further includes a strain gage. The strain gage is attached to the surface of the slot wedge. A method of determining the strain on the generator slot wedge of the generator via the strain gage is also described.

Abstract: A motor stator includes a ring-shaped core defining a rotor accommodation space, a plurality of slots, a first hairpin conductor, a second hairpin conductor, and a temperature sensor. The slots are disposed in the core and arranged to surround the rotor accommodation space circumferentially. The slots extend radially from the rotor accommodation space. The core includes an insertion side and an extension side. The slots include a temperature sensor accommodation slot which, at the insertion side, has a radial length greater than a radial length of any other one of the slots. The first hairpin conductor is disposed in the temperature sensor accommodation slot distal to the rotor accommodation space. The second hairpin conductor is disposed in the temperature sensor accommodation slot, and the temperature sensor is disposed between the first and second hairpin conductors.

Abstract: A bobbin structure is inserted into a slot defined in a stator core. The bobbin structure includes a body configured to contact an inner wall of the slot and at least one partition provided inside the body to insulate at least some coils, inserted into the slot so as to be arranged in a plurality of layers, from each other. The body and the at least one partition are formed integrally with each other.

Abstract: A set of interchangeably pairable end caps is provided for electrically insulating a variety of stator cores having differing axial stack heights. Each pair of end caps cooperatively defines a generally radially projecting, generally axially extending wire barrier including axially opposed ends. Each of the ends forms a respective rounded winding ramp configured to smoothly guide wiring into a wire trough in part defined by the wire barrier.

Abstract: An electric machine for a drive system having a first DS rotor and a second DS rotor includes a first EM rotor rotatable about an axis in a first circumferential direction and including a plurality of magnets, the first EM rotor configured for mechanical coupling to the first DS rotor; and a second EM rotor rotatable about the axis in a second circumferential direction and including a plurality of windings, the second EM rotor configured for mechanical coupling to the second DS rotor and the plurality of magnets of the first EM rotor operably engaged with the plurality of windings of the second EM rotor.

Abstract: An electric generator comprising a rotor with permanent magnets, configured for rotating about a rotation axis; at least one magnetic yoke with at least two arms extending axially inside or outside of the rotor so as to be adjacent to the radial inner or outer side, respectively, of the rotor; wherein the permanent magnets are arranged according to an Halbach array so as to maximize the magnetic field on the radial side of the rotor adjacent to the arms of the at least one yoke. Also, a valve for gas cylinder, equipped with a corresponding electric generator.

Abstract: A coil substrate includes a flexible substrate having a first end and a second end on the opposite side with respect to the first end, and coils formed on the flexible substrate such that the coils are positioned substantially in a row between the first end and second end of the flexible substrate. The coils are formed such that the number of coils is K and that the coils include the first coil positioned close to the first end and the K-th coil positioned to form a predetermined distance between the K-th coil and the second end, where K is an integer equal to or greater than 2.

Abstract: A coil winding for an electric motor, and systems, components, assemblies, and methods thereof, can comprise turns of a predetermined number of electrically conductive wires on a first side of the coil winding twisted together in a clockwise direction; and turns of the predetermined number of the electrically conductive wires on a second side of the coil winding opposite the first side twisted together in a counterclockwise direction.

Abstract: A magnetic gear may include a stator, having a stator core having a plurality of teeth extending toward a rotation shaft and a plurality of coils wound around the plurality of teeth, a rotor, having a rotor core disposed inside the stator and fixed to the rotation shaft and a plurality of permanent magnets attached to the external surface of the rotor core, and a pole-piece unit, having a plurality of first pole pieces and a plurality of second pole pieces arranged radially about the rotation shaft between the stator core and the rotor core such that the plurality of first pole pieces and the plurality of second pole pieces are alternately arranged in a circumferential direction thereof.

Abstract: A stator and a motor including a stator. The stator includes a stator hub, a plurality of stator teeth extending from the stator hub that define a stator slot having a stator slot base, at least one winding disposed in the stator slot, and one or more oscillating heat pipes disposed at least partially in the at least one winding. The at least one winding is held apart from the stator slot base so that a cooling channel is defined between an inner winding portion of the at least one winding and a portion of the one or more oscillating heat pipes is disposed in the channel so cooling fluid can be passed between the stator slot base and the inner winding portion to cool the inner winding portion via at least operation of the one or more oscillating heat pipes.

Abstract: Rotor for an electrical machine has a rotor core with a plurality of radially outwardly extending rotor legs, a number of exciter windings corresponding to the number of rotor legs, each wound around one of the rotor legs, and a separating device, having a number of separating portions corresponding to the number of rotor legs, which are arranged between a respective pair of adjacent exciter windings and extend axially between two opposing end faces of the rotor, a first annular connecting portion which connects together the separating portions at one of the end faces, and a second annular connecting portion which connects together the separating portions at the other of the end faces.

Abstract: An earthing brush assembly including an earthing brush and a brush mounting plate configured to radially and axially retain the brush, the brush having a support and a plurality of conductive individual fibres mounted in the support, the mounting plate providing a radial main body axially delimited by a first front face and by a second front face, and a plurality of tongues for axially and radially retaining the brush, the tongues being circumferentially distributed around the main body of the mounting plate and extending axially from the second front face of the main body. The brush mounting plate includes at least three mounting segments extending radially outwards from an outer surface of the main body, the mounting segments being distributed circumferentially around the main body of the mounting plate, each one of the segments locally surrounding the support of the earthing brush while remaining radially separated from the support.

Abstract: Embodiments of the present disclosure relate to a wiring apparatus for a motor and a corresponding motor. The wiring apparatus comprises an annular member and a conductor. The annular member has a first side adjacent to the motor and a second side opposite to the first side. The conductor is embedded in the annular member and comprises a plurality of joints coupled to each other via a conductive bar. The annular member comprises a first group of holes and a second group of holes. The group of holes each extend from the first side to the plurality of joints and the second group of holes arranged opposite to the first set of holes and each extends from the second side to the plurality of joints. The wiring apparatus according to embodiments of the present disclosure has a simple and compact structure, which greatly improves the efficiency of wiring.

Abstract: Disclosed is a machine having a moving member. The moving member including a cold plate having a plurality of slots through the cold plate. The moving member also including a plurality of ferromagnetic cores coupled to the cold plate, each of the plurality of ferromagnetic cores protruding through a respective one of the plurality of slots, creating gaps between the plurality of ferromagnetic cores. The moving member also including a plurality of armature windings coupled to the cold plate, the plurality of armature windings occupying the gaps between the plurality of ferromagnetic cores.

Abstract: An assembly for generating electricity includes a circular track configured to rotate about a first axis of rotation, the circular track comprising a first magnet having a face that is at an angle with respect to the first axis of rotation, a second magnet positioned at a center of the circular track, wherein a face of the second magnet is an opposite polarity to the face of the first magnet such that the second magnet repels the first magnet to rotate the circular track, and a device for converting rotational motion from the circular track into electricity.

Abstract: A motor and a coreless stator coil winding unit thereof are disclosed. The coreless stator coil winding unit includes an overlapping coil winding assembly and a non-overlapping coil winding assembly. The overlapping coil winding assembly includes a plurality of first coils arranged annularly and a plurality of second coils arranged annularly. The first coils and the second coils overlap with a phase difference. The non-overlapping coil winding assembly includes a plurality of third coils arranged annularly. The third coils are each located between an adjacent one of the first coils and an adjacent one of the second coils. Thus, the back electromotive force constant and torque constant of the motor have a better performance.

Abstract: An electric motor including a stator having a stator slot, and a composite material within the stator slot. The composite material includes a matrix material, and additive particles having thermal conductivity and anisotropic electric properties. The additive particles are oriented in an aligned configuration and set to provide the composite material with thermal conductivity and reduced electrical conductivity in at least one direction based on the aligned configuration.

Abstract: A magnetic brake assembly for use with a wheel rim is described. The brake assembly includes a rotor secured to rotate with the rim and a stator secured to be rotationally stationary relative to the rotor. One of the rotor and stator has an electrically conductive body and the other of the rotor and stator has a magnetic array including a plurality of magnets configured to generate a magnetic flux. An actuator is connected to at least one of the electrically conductive body and magnetic array to selectively effect a brake mode and a non-brake mode. In the brake mode, the magnetic array induces eddy currents in the electrically conductive body to generate a magnetic braking force when the rim rotates above a threshold speed and in the non-brake mode, the induced eddy currents cause a negligible or no magnetic braking force as the rim rotates above the threshold speed.

Abstract: A motor may include a shaft, a rotor coupled to the shaft, a stator disposed outside the rotor, and a bus bar disposed on the stator. The bus bar may include a terminal connected to a coil of the stator, the terminal includes a first terminal and a second terminal separated from each other in a circuit manner, the first terminal includes a first neutral terminal and a plurality of first phase terminals, the second terminal includes a second neutral terminal and a plurality of second phase terminals, first curvature centers of the plurality of first phase terminals are disposed to be different, second curvature centers of the plurality of second phase terminals are disposed to be different, and a position of a curvature center of the first neutral terminal is the same as a position of a curvature center of the second neutral terminal.

Abstract: There is provided a system including a dual rotor electrical machine. The dual rotor electrical machine comprises a stator, an inner rotor including a first number of permanent magnet pole pairs, and a modulator including a second number of modulating segments. The system includes a controller configured to execute non-transitory machine readable instructions that, when executed by the controller, cause the system to determine a virtual position of an electromagnetic field of the stator based on a weighted sum of an angular position of the inner rotor and an angular position of the modulator, wherein weights in the weighted sum are based on the first number and the second number.