Abstract: Embodiments of this application provide a magnetic element and an electronic device. The magnetic element is used in an electronic device. The magnetic element includes a composite magnetic core and a winding. The composite magnetic core includes an external magnetic shell and an internal magnet. The internal magnet is formed by a wound strip material. The external magnetic shell partially or entirely covers a periphery of the internal magnet. The external magnetic shell is fixedly connected to the internal magnet. The winding is on an outer surface of the external magnetic shell. The external magnetic shell is configured to protect the internal magnet from pulling force in a winding process of the winding. The external magnetic shell is configured to increase common-mode impedance of the magnetic element and improve a filtering effect of the magnetic element.

Abstract: An insulator according to an embodiment includes a teeth cover portion and a crossover-wire guide portion. The crossover-wire guide portion includes a plurality of guide walls, a drawing groove, a drawing path, and a crossover-wire support portion. The plurality of the guide walls separate the crossover-wire portions of the coils and are capable of guiding the crossover-wire portions in the core circumferential direction. The drawing groove penetrates through all of the plurality of the guide walls in the core radial direction. The drawing path is disposed at a position away from the drawing groove in the core circumferential direction. The crossover-wire support portion changes a direction of the crossover-wire portion of the coil drawn out from the drawing groove, to be directed to the drawing path, and supports the crossover-wire portion.

Abstract: Provided are a stator having insulating paper positioned and fixed using an inexpensive and simple structure, a motor having the stator, and a method for manufacturing the stator. The stator 18 of a motor is provided with a stator core 26 having a plurality of slots 16, a plurality of coils 32 positioned in the slots, pieces of coil end insulating paper 40 that are positioned between a plurality of coil ends 44 and that insulate the coil ends 44 from each other, and a plurality of pieces of intercoil insulating paper 34 positioned in the slots 16, each of the plurality of pieces of intercoil insulating paper 34 having a projection 38 projecting from an axial end part 36 of the stator core. Each of the pieces of coil end insulating paper 40 has an adhesive part 42, and a plurality of projections 38 are affixed into a single piece of coil end insulating paper 40.

Abstract: An electric motor (MC) is described comprising a rotor (100) rotatable about a rotation axis (X), a stator comprising a circular series of windings for creating a magnetic field through which to rotate the rotor; a support provided with a circular series of seats for housing the windings; an element (40, 50), mounted between a winding and a wall of the respective seat which houses it, configured to conduct heat from the winding towards the outside of the stator in order to dissipate the heat.

Abstract: In a method for operating an electric machine with at least two coils and a magnetizable, movable core such as an armature or a rotor, a current of a constant average value is applied from a direct current source at the coils in such a way that the device is operated in the magnetic saturation range of the core. More particularly, one linear and one rotational actuator is proposed for such an operating mode.

Abstract: An electric motor has a rotor and a stator (1) with a first winding space (11) to receive a multiplicity of coil windings (12) wound from a winding wire. A second winding space (20), connected to the respective first winding space (11), is provided as a winding space extension of the first winding space (11) in order to receive at least one wire portion (21) of the winding wire. Two receiving pockets (24, 25), situated opposite one another in the circumferential direction (U), are formed in the at least one second winding space (20) in order to respectively receive the at least one wire portion (21) of the winding wire.

Abstract: A stator of an electric machine includes: a laminated stator core having sheet-metal blanks, which have slots; and stator windings, which are arranged in the slots of the laminated stator core together with slot insulation, such that, within the slots, a respective slot insulation is positioned between the sheet-metal blanks and the stator windings in order to electrically insulate the stator windings from a sheet-metal material of the sheet-metal blanks, and such that, when viewed in an axial direction, the stator windings protrude from the slots, project laterally with respect to the laminated stator core, and form winding overhangs laterally adjacent to the laminated stator core. When viewed in a radial direction, coolant flow channels are formed radially on an inside and/or radially on an outside, directly adjacent to the slots accommodating the stator windings. The stator windings accommodated in the slots of the laminated stator core are impregnated.

Abstract: A rotor including: a drive shaft rotating about an axis of rotation, a plurality of annular rotor plates, identical to each other, mounted on the drive shaft, superposed along the axis of rotation and including a plurality of openings, a pair of closing plates which are located at the ends of said plurality of rotor plates, a plurality of bars, passing through at least part of said plurality of openings of the plurality di rotor plates, a pair of short-circuit rings located a the ends of said plurality of bars and wherein an active ratio between a first area occupied by the plurality of openings and a total area of the rotor plate is greater than or equal to 0.30, that is, R1=A1/AT?0.30.

Abstract: A cooling system for a superconducting electric machine may comprise a fluid reservoir and a first fluid comprising a first mixture of hydrogen and helium configured to be stored in the fluid reservoir. A plurality of conduits may be fluidly coupled to the fluid reservoir and may form a closed loop between the fluid reservoir and the superconducting electric machine.

Abstract: A canned motor, including: a motor housing, a stator fixed to the motor housing, a rotor mounted on the motor housing so as to be rotatable relative to the stator about an axis of rotation, a can fixed to the stator radially between the stator and the rotor, at least one annular seal carrier fixed to the motor housing, radially inside the can, at an axial stator end, and at least one annular seal supported radially and axially on the seal carrier, the at least one annular seal configured to seal off a rotor space, in which the rotor is arranged, from a stator space through which a coolant can flow, wherein the stator space has a main region and an annular region, which extends from the at least one annular seal along the seal carrier and merges into the main region at a distance from the seal.

Abstract: According to one embodiment, each of the first piece portions of a fixing ring is elastically deformed with a first bent portion to be bent toward a first surface side serving as a point of origin. In a map shape formed by projecting a plurality of broad portions and the first piece portions onto a virtual plane parallel to the first surface, each of the first bent portion intersects a straight line passing through a contact point of a circumscribed circle in contact with an outer circumferential edge of the broad portion on which the first piece portion is provided and a center point of the circumscribed circle. Each of the first piece portions is positioned between an inscribed circle in contact with an inner circumferential edge of the first piece portion and the first bent portion.

Abstract: The motor comprises: a stator around which coils are wound and which forms a rotating magnetic field rotating a rotor; and a first motor case housing the stator. The stator has: a core body portion forming an annular magnetic path; and a fastening portion projecting outside in the radial direction from the outer circumferential surface of the core body portion. The fastening portion has an attachment hole which is formed in a penetrating manner along the rotating axis line direction of the rotor and into which a fastening screw for fixing the stator to the first motor case is inserted. The first motor case has: first to third core receiving portions receiving an end portion of the core body portion in the rotating axis line direction; and first and second fastener receiving portions receiving an end portion of the fastening portion in the rotating axis line direction.

Abstract: A resolver includes a first transformer coil provided on a first board of a stator, and a second transformer coil provided on a second board of a rotor. The first board is provided with electric elements placed around a rotary shaft and inward of the first transformer coil, and signal wires of the electric elements. The first transformer coil includes an arc-shaped first outer portion and a first inner portion that are provided with a first air gap therebetween. The second transformer coil includes a ring-shaped second outer portion and a second inner portion that are provided with a second air gap therebetween. The first air gap and the second air gap are provided, facing each other in a rotary shaft direction. The signal wires are routed in an opening region in which the first outer portion and the first inner portion are not present, in a ring-shaped region in which the first transformer coil is extended.

Abstract: A rotor for an electric machine, in particular for a brushless DC motor, includes a hollow cylindrical main body that is rotationally fixed to a machine shaft. The main body includes a plurality of radial protrusions arranged over its casing surface in the circumferential direction and in the axial direction and offset relative to one another by a defined offset angle. Each radial protrusion is limited over an angular range, which is smaller than the offset angle. The hollow cylindrical main body is permanently connected, in particular adhered, to a hollow cylindrical body surrounding same in the circumferential direction by way of a joining process. A method for producing a rotor for an electric machine is also disclosed.

Abstract: An electric motor with multiple electric gears to achieve an effect equivalent to mechanical gears in transmissions, enabling more efficient use of electricity at a wider range of speeds and torques is described. The Gears for Electric Motor (GEM) comprises a multi-phase motor having a concentric set of dedicated rotors to specific ranges of revolutions per minute (RPMs), and corresponding stators. The rotors and stators may be fitted within each other or positioned approximately parallel to each other along the longitudinal axis of the motor shaft. A controller determines which rotors are activated based on desired efficiency, torque and speed. Alternately, or in addition, magnets and coil pairs are constructed with varying properties to make more efficient use of electricity at a wider range of speeds and torques.

Abstract: A stator core that is configured by stacking plural core plates and that is housed inside a case of a motor. The plural core plates include an elastic protrusion-equipped core plate provided with plural elastic protrusions arrayed in a circumferential direction. The elastic protrusions extend toward a radial direction outside from an outer peripheral portion of the elastic protrusion-equipped core plate and are bent in an axial direction. The stator core is supported by the case in a state in which the plural elastic protrusions are in contact with an inner peripheral face of the case and elastically flexed.

Abstract: The invention is directed to an apparatus (100) and a method for manufacturing a partial nest or a nest (5) of pin conductors (1, 1i, 1o) for forming a stator. The apparatus (100) comprises a stator core template (10) with a block body (11) and radially extending ribs (12) forming slots (13) there between for insertion of legs (2, 2i, 2o) of the pin conductors (1, 1i, 1o). The apparatus (100) comprises at least one ring element (25, 33, 42) being arranged to provide an outer radial abutment face for inserted pin conductors (1, 1i, 1o).

Abstract: An inter-phase insulating paper, including: a plurality of insulating papers arranged in a stator core in a manner of circulating in a circumferential direction and configured to perform inter-phase insulation of each phase coil provided in the stator core, wherein the insulating paper includes a pair of leg portions to be respectively inserted into a pair of slots among a plurality of slots formed in the stator core, and a pair of flat portions connected to the pair of leg portions and protruding from both end surfaces of the stator core in an axial direction to perform the inter-phase insulation of each phase coil, and the pair of leg portions are connected to a central portion of an edge of the flat portion.

Abstract: A torque sensor is less likely to lower detection accuracy. A screwing machine includes a motor including a stator and a rotor rotatable about a rotation axis, a gear case, a planetary gear, an internal gear connected to the planetary gear, a torque sensor including a front plate coupled to the internal gear, a rear plate supported by the gear case, a hollow portion located between the front plate and the rear plate, and a strain gauge fixed to the hollow portion, a bearing located between the stator and the rear plate and supporting at least a part of the rotor, and a bearing box surrounding the bearing and supporting the bearing.

Abstract: A vibrator includes a frame, a swing unit, and an elastic member. The swing unit is disposed within the frame and holds a magnet. The elastic member connects the swing unit and the frame. The swing unit is movable with respect to the frame while deforming the elastic member. The frame, the swing unit, and the elastic member are integrally molded with each other.