Abstract: One embodiment relates to a stator unit and a motor comprising same, the stator unit comprising: a stator core; a coil wound around the stator core; and an insulator disposed between the stator core and the coil, wherein the stator core comprises a support part, and a coil winding part disposed on both side surfaces of the support part so as to protrude therefrom, wherein the support part and the coil winding part are disposed so as to form a cross shape. Accordingly, a coil space factor may be increased by using the cross-shaped stator core.

Abstract: A stator assembly including a frame structure having a stator teeth being circumferentially distributed around a longitudinal axis, wherein in between respective two neighboring stator teeth there is formed one stator slot; a winding system having a plurality of electric windings, wherein respectively one electric winding is wound around at least one stator tooth and is partially accommodated within two stator slots and each electric winding comprises an end winding portion which axially protrudes from the frame structure; and an insulation arrangement having a plurality of electric insulation devices, each insulation device surrounding a part of one electric winding is provided. Each insulation device includes an inner insulation portion being accommodated within the respective stator slot and an outer insulation portion protruding from the frame structure and surrounding a part of the respective end winding portion.

Abstract: A stator is improved in work efficiency of mounting to a stator core is provided. The stator includes insulators sandwiching the stator core therebetween. The stator core includes a plurality of teeth that radially projects. Each of the insulators includes a plurality of tooth covering portions that radially projects. The tooth covering portions cover the teeth. In a facing portion of one of the insulators facing the stator core, a peripheral portion projects more than a center portion. In a facing portion of the other of the insulators facing the stator core, a center portion projects more than a peripheral portion.

Abstract: A motor is provided that reduces noise and vibration, and a method is provided for manufacturing the motor and a cleaner having the motor. The motor includes a stator including a plurality of teeth that are spaced apart from each other in a predetermined interval in a circumferential direction and a coil that is wound around the plurality of teeth, a rotor that is disposed inside the stator, and a cage that is disposed in at least one of a plurality of slots that are formed between the plurality of teeth. The cage is configured to include a flow path to inject a bonding agent into at least one slot.

Abstract: An electric machine includes at least one stator having at least one individual-tooth winding carrier that has at least one spacer configured to space apart turns of an individual-tooth winding mounted on the individual-tooth winding carrier. A hybrid electric aircraft has an electric machine of this kind.

Abstract: The invention relates to an electrical machine (10), comprising at least one first coil (12), which is surrounded by a first electrical insulation element (24) at least in a partial region, and at least one second coil (14), which is surrounded by a second electrical insulation element (26) at least in a partial region, wherein at least one electrically conductive layer (28) provided in addition to the coils (12, 14) and in addition to the electrical insulation elements (24, 26) is arranged between the coils (12, 14).

Abstract: Two types of insulating members, i.e., end surface insulators and slot insulators are provided. On tooth portion sides of both side surfaces in the circumferential direction of tooth end surface covering portions of the end surface insulator, first cutouts recessed in the circumferential direction are provided so as to extend in the radial direction. A part axially upward of the first cutouts protrudes in the circumferential direction to form a first overhang portion, and the slot insulator is accommodated between the first overhang portions of two end surface insulators.

Abstract: A method for inserting electrical conductors in slots of a component, wherein, in sections, an insulating film has two legs which are connected by a V-shaped or folded tip region. The legs lie against the slot edges such that damage to the electrical conductors by edges of the slot during the insertion thereof into the slots is avoided. The invention further relates to an associated device, to an associated cutting tool, and to an associated use.

Abstract: A stator includes a connecting insulator member having a guide portion that connects two insulators, and jumper wires that are guided by the guide portion and connect two coils. The connection insulator member includes a lower layer insulator member, an intermediate layer insulator member, and an upper layer insulator member. The guide portion of the lower layer insulator member has a lower layer arc connecting part, the guide portion of the intermediate layer insulator member has an intermediate layer arc connecting part, and the guide portion of the upper layer insulator member has an upper layer arc connecting part. The intermediate layer arc connecting part is arranged above in the axial direction with respect to the lower layer arc connecting part in the axial direction, and the upper layer arc connecting part is arranged outside in the radial direction with respect to the intermediate layer arc connecting part.

Abstract: A dynamo-electric machine with discharge reduced in a core slot without relation to a position of a stator coil placed in the core slot is provided. For that purpose, the present invention includes: a stator coil including a coil conductor and a main insulation layer covering a surface of the coil conductor; a core slot containing the stator coil; a first semiconducting layer that is placed between the stator coil and the core slot and is wrapped around and in contact with the main insulation layer; and a second semiconducting layer that is wrapped around the stator coil and in contact with the core slot, with the second semiconducting layer overlaid on the first semiconducting layer. The first semiconducting layer has a surface facing toward the core slot and a release layer is formed on the surface facing toward the core slot. The first semiconducting layer has electric connection with an inner peripheral surface of the core slot via the second semiconducting layer.

Abstract: An electrical machine includes a rotor with a plurality of winding slots in which wire windings are arranged. A pair of covering slides is associated with each winding slot, wherein each covering slide has a closure wall, and the closure walls of the pairs of covering slides close the winding slots which are associated with them on that side of the winding slots which faces radially outward. Mutually facing longitudinal ends of the closure walls of the same pair of covering slides overlap in the assembled state in such a way that the closure walls of the same pair of covering slides overlap only in sections.

Abstract: A method of manufacturing a winding assembly for an electrical machine, the method comprising: selecting (S1) a mathematical function defining the spatial separation between adjacent turns of a winding path, the mathematical function dependent on one or more parameters of the electrical machine and/or of the anticipated operating environment of the electrical machine; forming (S2), by three-dimensional, 3D, printing, an electrically insulating body comprising a channel defining the winding path in accordance with said function, the channel having an inlet and an outlet; heating (S3) the electrically insulating body to a temperature above the melting point of an electrically conducting material; flowing (S4) the electrically conducting material through the inlet to the outlet to fill the channel; and cooling the electrically insulating body to solidify the electrically conducting material within the channel, thereby forming said winding assembly.

Abstract: A rotary electric machine includes magnetic poles to which a coil is attached. A connection portion between a conductive member and a coil end of the coil is arranged in an inter-pole gap between the magnetic poles. The rotary electric machine may include a rotor and a stator. The magnetic poles may be magnetic poles of the stator.

Abstract: Various embodiments relate to a stator having an improved structure of an insulator coupled to teeth and to a motor having the stator. The stator includes an insulator. The insulator includes: a coil-wound portion surrounding an outer circumferential face of a tooth; and both side walls respectively extending from both sides of the coil-wound portion, wherein the both side walls and the coil-wound portion defines a space receiving the coil, wherein one of the both side walls includes a coupling portion, wherein the insulator are divided into two parts and the two parts are coupled to each other via the coupling portion such that the tooth is inserted into and coupled to the insulator.

Abstract: An insulating paper (40) is inserted into a slot (13) of a stator core (10) of a rotary electric machine and insulates between the stator core (10) and a stator coil (20) disposed in the slot (13). An insulating member (40) comprises a sheet-shaped insulating base material (50), and a first adhesive layer (60A) which is provided on a first surface (50a) of the insulating base material (50) and which is formed of an adhesive. The first adhesive layer (60A) is provided with an exposed section (61) which extends in the axial direction of the stator core (10) and in which the insulating base material (50) is exposed from the adhesive.

Abstract: A betavoltaic power source. The power source comprises a source of beta particles and a plurality of regions each for collecting the beta particles and for generating electron hole pairs responsive to the beta particle flux. A first set of the plurality of regions is disposed proximate a first surface of the source and a second set of the plurality of regions is disposed proximate a second surface. The first and second surface in opposing relation. A secondary power source is charged by a current developed by the electron hole pairs.

Abstract: A stator for an electric motor, including a stator ring with slots arranged on the inner or the outer circumference, wherein each slot accommodates a plurality of conductors extending along the slot and having a rectangular cross-section, each of which is covered by an insulation layer, wherein to form a channel through which a coolant can flow, the insulation layer of at least one of the conductors has at least one recess extending along the conductor.

Abstract: A stator for a rotating electrical machine includes a stator coil, a stator iron core having slots into which the stator coil is mounted, and insulating slot liners inserted into the slots, wherein conductive wire materials constituting the stator coil are inserted into the slot liners, and sections of the slot liners protruding from the slots are each provided with a bellows portion.

Abstract: An electric machine includes a winding yoke defining a plurality of winding slots between circumferentially spaced apart teeth. A respective winding separator is mounted within each of the winding slots. The winding separator is mounted to a keying feature that extends from the winding yoke into the winding slot. The winding yoke can be a laminated structure, wherein the teeth and keying features are part of a common laminated structure with the winding yoke. The winding yoke can be a stator, and a rotor can be mounted within the stator for rotary movement relative to the stator.

Abstract: A winding structure of motor stator includes a stator core, two insulation members, an upper cap, a lower cap, and a coil. The two insulation members are disposed on two winding grooves of the stator core respectively. The upper cap and the lower cap are disposed on a top end and a bottom end of the stator core respectively. The coil is wound on the upper cap, the two insulation members, and the lower cap. Stopping pieces facing each other are formed on two sides of each of the upper cap and the lower cap. Each of the stopping pieces is separated from the coil without contact.

Abstract: A drive device includes an electric motor and a gear unit that is driven by the electric motor. The electric motor has a laminated stator core which includes stator windings and is accommodated in a stator housing. The stator housing has recesses that are axially uninterrupted, i.e. in particular in the direction of the rotor shaft axis, and the stator housing is surrounded, especially radially surrounded, by a housing of the drive device, in particular a tubular housing and/or a cup-shaped housing, and the housing is set apart from the stator housing, in particular such that an especially circulating airflow is able to be provided within the housing, the recesses in particular guiding the airflow through in the axial direction, and the airflow being returned in the opposite direction in the set-apart region between the stator housing part and the housing.

Abstract: An insulating paper (40) is inserted into a slot (13) of a stator core (10) of a rotary electric machine and insulates between the stator core (10) and a stator coil (20) disposed in the slot (13). An insulating member (40) comprises a sheet-shaped insulating base material (50), and a first adhesive layer (60A) which is provided on a first surface (50a) of the insulating base material (50) and which is formed of an adhesive. The first adhesive layer (60A) is provided with an exposed section (61) which extends in the axial direction of the stator core (10) and in which the insulating base material (50) is exposed from the adhesive.

Abstract: A wind portion of an insulator includes a side surface at the same side as, in a circumferential direction, a second guide surface which is orthogonal to a holding surface capable of holding a coil and which guides a winding in an inner-diameter direction, and an end surface orthogonal to the side surface. A first corner formed at a boundary between the holding surface and the side surface as viewed in the axial direction of a motor stator is located at a guiding-direction side by a first guide surface relative to a second corner formed at a boundary between the first guide surface and the second guide surface. The winding is extended from the second corner to the first corner.

Abstract: A rotor lamination assembly is formed with a central hole wherein a central axis goes through the central hole. The rotor lamination assembly is further formed with an even number of mounting holes arranged between a rim of the central hole and an outer rim of the rotor lamination assembly. The outer rim of the rotor lamination assembly has a projection on a plane substantially perpendicular to the central axis. The projection includes an even number of base curve edges, an even number of protruding curve edges, and connecting curve edges. Each protruding curve edge is arranged between two adjacent base curve edges in a circumferential direction of the central axis. The protruding curve edges and the base curve edges are connected with each other through the connecting curve edges. Every two mounting holes which are arranged symmetrically constitute a mounting hole group.

Abstract: Winding (12) of an electrical machine, having a plurality of winding segments (13), wherein each winding segment (13) respectively has at least two electrically conductive, hairpin-shaped or U-shaped or rod-shaped conductor elements (15), wherein the conductor elements (15) of each winding segment (13) are surrounded, in a central section thereof, by electrically insulating insulation (16) while leaving ends of the conductor elements free, and wherein each conductor element (15) of each winding segment (13) is connected in an electrically conductive manner to a conductor element (15) of another winding segment at the ends. Projections (17) which are made from an electrically insulating material and are used as spacers are applied to sections of the insulation (16) of the conductor elements (15) and bound sections of the coolant channels (18) for directly cooling the conductor elements (15).

Abstract: A coil insulation structure for a rotating machine provided in the present invention is based on a conventional insulation technology. In particular, tooth portions of an iron core in which coil windings are inserted have a straight tooth structure without a shoe portion, and a component with an insulation effect is further added at a position of an opening of a groove in which the coil winding is located, so that an insulation effect is improved, and at the same time an added insulation component is used to ensure a thickness and a size of an inner layer located at a position adjacent to an air gap of a motor when the coil winding is encapsulated, thereby improving product quality.

Abstract: A stator includes a stator core and a winding wound around the stator core in wave winding. The winding includes an assembly of a plurality of covered wires, and an outer cover film that surrounds and covers the assembly and contains thermosetting resin. Each of the covered wires includes a conductor and an insulating film surrounding and covering the conductor. Each of the covered wires has a wire width of 1.5 mm or less.

Abstract: The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system for an electrical machine. For example, a corona shielding system may include: an outer corona shield and an overhang corona shielding. The outer corona shielding and the overhang corona shielding may comprise a first corona shielding material having a nonlinear field strength-dependent electrical resistance.

Abstract: A stator of a rotating electric machine includes a stator core provided with a plurality of slots along a circumferential direction, coils of a plurality of phases distributedly wound around the stator core via the plurality of slots, and an insulating paper disposed between the slot and the coil. The insulating paper has an adhesive portion which fixes the coil to the stator core and a part of the coil of each phase is fixed to the stator core by the adhesive portion.

Abstract: A stator assembly includes a stator core, an insulated wire frame, a coil, and an annular insulation structure. The stator core includes a magnetic yoke portion and a radial tooth portion, and the radial tooth portion extends from the magnetic yoke portion. The insulated wire frame disposed outside the radial tooth portion of the stator core has a winding slot. The coil is wound in the winding slot of the insulated wire frame annularly. The annular insulation structure is formed by injection moulding and wraps an area where the coil is exposed out of the insulated wire frame, and the coil is packaged between the insulated wire frame and the annular insulation structure.

Abstract: The present invention relates to a stator core for improving the fixing properties of a magnet wire, and a motor in which the same is applied. Provided is a stator core which comprises a protrusion pattern part for fixing the distal end portion of a magnet wire, and thus eliminates a process of fixing the wire using a separate member during a wiring process, thereby improving processability and inhibiting an insulating film of the magnet wire from being damaged by an external force such as vibration.

Abstract: This invention relates to a stator for an axial flux electromagnetic machine, with the stator forming a ring (1) having two substantially circular faces (1a, 1b) connected by a thickness comprising windings (3) regularly distributed in the ring (1). Each winding (3) is carried by a unit portion (4) having a core (5) around which the winding (3) is wound. The unit portions (4) are arranged concentrically edge-to-edge with respect to one another and have securing means (12, 12a, 14) with a support member (6) which is part or not of a casing housing the ring (1) carried either by axial and lateral faces of each unit portion (4) edge-to-edge or by at least one upper or lower face of with each unit portion being part of a substantially circular face.

Abstract: A rotary electric machine includes a stator, a rotor, a plurality of coils and a plurality of spacers. The stator has a stator body and a plurality of stator poles. Each stator pole has a pair of oppositely facing side surfaces. The rotor is positioned within the stator and has a plurality of rotor poles. One coil is disposed about each stator pole. The spacers are disposed between one coil and at least one of an inner circumferential surface of the stator body and the side surfaces of the stator body to define a fluid flow opening between the coil and the stator.

Abstract: A wound stator for a dynamo-electric machine comprising a stator stack having a unitary cylindrical yoke and a plurality of circumferentially spaced, radially inward extending stator teeth defining stator slots therebetween. A winding is formed by a strand of wire forming turns around each stator tooth, each winding including a first lead end extending from a stator slot on a first side of a respective stator tooth and a second lead end extending from a stator slot on a second side of the respective stator tooth. An insulation system is provided including an insulating structure septum extending through each stator slot between windings located on two adjacent stator teeth, the turns of each winding located between a respective stator tooth and a first surface of the insulating structure septum engaged with the winding.

Abstract: There is provided an insulation paper to be disposed between a slot formed in a stator core and a coil inserted into the slot. A crease is provided in advance at a folding position where the insulation paper is to be folded when disposed in the slot. The crease is provided in an area of the insulation paper excluding both end portions thereof.

Abstract: A rotor core includes a laminated iron core in which an electrical steel sheets are laminated, a magnet slot being provided in the laminated iron core and extending in a lamination direction of the laminated iron core, and a magnet that is fixed to an inside of the magnet slot through resin. The resin includes a filler, and the filler has a length in a longitudinal direction larger than a length in a width direction. The filler is oriented such that the longitudinal direction is directed towards a surface of the magnet.

Abstract: A rotating electrical machine capable of achieving a high torque and low noise is provided. In a stator for a rotating electrical machine in which six or more slot conductors are inserted through one slot, the stator for a rotating electrical machine straddles slots such that a slot pitch of a jumper wire connecting round windings having different positions in a radial direction has at least two kinds or more different slot pitches.

Abstract: The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system, especially for an electrical machine, e.g., a high-voltage machine, such as a generator for generation of electrical energy, an electric motor, or another piece of electrical equipment having a relatively high rated voltage, e.g., a transformer or a bushing or a cable. A corona shielding system may include: a polymeric matrix; and filler particles comprising mica surrounded by a layer of at least one ceramic metal oxide. The filler particles may be distributed throughout the polymeric matrix.

Abstract: A stator of a rotating electrical machine that can realize productivity growth, compared with a conventional technique is provided. A stator of a rotating electrical machine includes a slot; a plurality of coils disposed within the slot; and an insulator disposed around the coils within the slot. The insulator has an outer peripheral portion that surrounds the plurality of coils; and a bent portion that extends from the outer peripheral portion between the coils and that is folded back on a tip end.

Abstract: An electric power tool includes a brushless motor as a driving source. The brushless motor includes a stator and a rotor. The stator includes coils wound around in three phases. In a wire winding method of the coil of the stator, when the number of slots per phase is N, the number of series of the coils per phase is A, and the number of parallel of the coils per phase is B, a relation of N=A×B (note that, N is a natural number of 3 or more and 10 or less, A is a natural number of 1 or more, and B is a natural number of 2 or more) is satisfied.

Abstract: A rotary electric machine according to the present invention includes: a stator including: a stator core; and a stator winding that is mounted to the stator core, and into which a varnish is impregnated, the stator being held by a housing in a state in which housing interfitting surfaces on two axial end surfaces of a core back portion are clamped by the housing from two axial ends, wherein a varnish leakage stopping portion is formed radially inside the housing interfitting surfaces on two axial end surfaces of the stator core so as to interrupt flow pathways of the varnish from a radially inner side onto the housing interfitting surfaces.

Abstract: A stator includes a plurality of lead wires extending upward from a coil and a guide member supporting the lead wire above the coil. The guide member is an insulating body. The guide member includes a lower plate, an inner wall, and an upper plate. The lower plate spreads annularly around a central axis. The inner wall extends upward from an inner circumference of the lower plate. The upper plate extends from the inner wall to a radial outside. A single lead wire accommodation space exists on an upper side of the lower plate, a lower side of the upper plate, and a radial outside of the inner wall. The plurality of lead wires are circumferentially disposed along the inner wall in the lead wire accommodation space.

Abstract: The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system, especially an outer corona shielding system, for an electrical machine. For example, a corona shielding system may include: a polymeric matrix; particles disposed in the matrix, including a mica-coated core and a layer of metal oxide disposed on the core; and a surface functionalization material disposed on a surface of the particles for binding to the matrix.

Abstract: A stator having a structure in which an insulating paper is easily inserted into a slot and a method for manufacturing the same are provided. The stator includes a stator core (21) alternately having teeth (32) and slots (34) in a circumferential direction, a coil (33) installed at the stator core (21), and an insulating paper (60) provided around the coil (33) while being accommodated in the slot (34) and having a folded portion (64) in a lengthwise direction of the slot (34).

Abstract: A rotating electrical machine includes: a rotor core in which a slot passing therethrough is provided; a rotor winding which coil end portion is extended on the axially outer side than the core end face of the rotor core; a U-shaped channel which is arranged on the slot of the rotor core, is touched to come into contact with a bottom portion of the rotor winding, and is axially extended to be projected on the axially outer side than the core end face of the rotor core; a slot cell which insulates the rotor winding and the U-shaped channel from the rotor core; and an interposed piece arranged between the rotor windings at a portion more projected than the core end face of the rotor core. The projected end face of the U-shaped channel is arranged on the axially inner side than the projected end face of the interposed piece.

Abstract: A cooling structure for a rotating electric machine includes a stator, a plurality of refrigerant supply ports, and a refrigerant supply passage. The stator includes a stator core, an insulating member, and a plurality of coils. Each of the plurality of coils includes a corner portion having an arc shape when viewed in a radial direction. The plurality of refrigerant supply ports are arranged at a distance from the plurality of coils in a rotational axis direction. Each of the plurality of refrigerant supply ports is arranged at a position opposite to the corner portion located at a vertically upper side, on both sides of an imaginary vertical plane.

Abstract: A method releases rotor poles of a large electrical machine from the rotor hub, which in the fitted state is located within the stator. In one method step, at least one device is introduced into the air gap between the sector and a rotor pole to be released. The device has a carrier plate and at least one cushion that can be filled with gas and is attached to the carrier plate. In a following method step, the cushions belonging to the device are filled with gas under pressure, the pressure being successively increased until the pole to be released has come away, and in that, in a following method step, the at least one device is removed from the air gap. In a further step, the released pole is pulled out of the rotor hub.

Abstract: A stator of a rotating electric machine includes a stator core, a plurality of insulators and a plurality of concentrated winding coils. The stator core includes an annular yoke and a plurality of teeth. The insulators are located along outer peripheral wall surfaces of the teeth. Each of the insulators includes a plurality of first surfaces and a plurality of second surfaces. The second surfaces connect the first surfaces. The coils are fitted on the teeth on which the insulators have been placed from a radially inner side thereof. The first surfaces of each of the insulators are in contact with inner peripheral surfaces of the coil that is placed on the outer periphery of the insulator.

Abstract: A carrier for coils of an electric machine includes a rotation-symmetrical carrier stack having laminations with axial slots which are configured to receive a wire of the coils. Adjacent ones of the slots are separated from one another by a slot wall. The carrier stack has circular end faces and is formed with slot openings for the slots. Electrically insulating material is applied upon at least the slot walls of at least one of the end faces to cover the slot walls at their end face and to electrically insulate the slot walls.

Abstract: In a stator, a stator winding is wound at a stator core. The stator winding has a section whose shape is rectangular and includes a plurality of conductors electrically connected to each other. Each of the conductors has in-slot portions being accommodated as being stacked in corresponding one of the slots when the winding is wound at the stator core. A fixing member fixes the in-slot portions to each of the slots. The fixing member is composed of an adhesive material charged into each of the slots such that a through-hole is left through each of the slots in the axial direction. Refrigerant is allowed to pass through the through-hole.