Abstract: A stator for a rotary electric machine includes: a stator core in a cylindrical shape with plural slots formed at an inner circumferential surface; plural coil segments inserted in the slots from one end surface side of the stator core; and plural coil end plates electrically connected with the coil segments on another end surface side of the stator core, wherein the coil segments respectively include: one leg portion; another leg portion; and a curved portion that is continuously formed between the one leg portion and the other leg portion, wherein the coil end plates respectively include: a plate portion in a flat plate shape; and a pair of extended portions, and wherein end portions of the leg portions of the coil segments are connected to the extended portions. It is possible to improve assembility and attain downsizing by reducing the volume of coil end portions for the stator.

Abstract: The present invention discloses a motor. A rotor and bearings are installed first and then copper wires are wrapped by a machine. Therefore, the copper wires wrapped are denser and thinner that a space filling factor is improved and an entire size of the motor is reduced. In addition to saving of electricity consumption and improvement of motor performance, the bearings are directly enclosed in two insulation plates to isolate from ambient environment, so that dust contamination can be reduced and noise from operation can be decreased, thereby extending a service life of the motor. Furthermore, packing and transportation costs can be even saved. Additionally, the insulation plates include plural insertion slots for insertion with copper plates which are electrically connected with a motor power cord. Thus, an inner stator can be connected with the power cord by plugging, so as to save labor work and time.

Abstract: A resolver is configured to determine the rotational position of a first member that is selectively rotatable about an axis with respect to a second member. The resolver includes a stator core, a plurality of wire windings operatively connected to the stator core, a winding support between the windings and the stator core, and a cover at least partially enclosing the windings. One of the cover and the winding support defines a pin that is fittable inside a hole in the second member. The pin functions as a locating feature, which ensures that the stator is accurately mounted to the second member. Because the pin is part of the winding support or the cover, the locating feature does not entail the use of an extra part, thereby simplifying assembly of the stator.

Abstract: A wiring component for a motor coil includes a wire coil configured by a plurality of wire segments arranged in a circumferential direction so as to form a ring shape, each of the wire segments including an arc-shaped main-body portion made of a conductive wire rod bent in an arc shape, protruding portions formed at both end portions of the main-body portion, and upright portions respectively formed at end portions of the protruding portions in a manner of bending one of end portions of each of the protruding portions so that the upright portions protrude in a direction vertical relative to a planar surface including the main-body portion. The wire coil is arranged to form a plurality of layers, thereby forming a cylindrical shape, and the upright portions, at which the adjacent wire segments contact each other in the circumferential direction thereof, are electrically connected to each other.

Abstract: A submersible electric pump motor comprises an unvarnished stator structure having stator windings formed of conductors. The stator windings form end coils at each end of the stator for each phase. The end coils are tied to three arc-shaped, metal segments, each having an opening and positioned circumferentially within a circumferential groove. The metal segments are welded to the interior of the housing to provide a rigid surface. High temperature strings are wound through the openings in each metal segment and around the end coils for each phase to tie each end coil of that phase to that metal segment. This prevents the end coils of each phase from twisting during startup, sliding into the slots, and moving inwards towards a rotating rotor.

Abstract: The invention provides for flux-shields wrapped around the flux-sources at the core-end of large power generators. They prevent overheating of all core-end parts under all abnormal conditions of operation. A first flux-shield is an electrically conductive cylindrical shell concentric with rotating end-windings, held outside the retaining ring. The rotating flux source induces eddy currents in the first flux-shield whose flux repels the source flux. Only a small part of the rotating source flux is hence received by all the core-end parts, thereby greatly reducing their temperatures. A second flux-shield comprises an electrically conductive tape wrapped over the ground-insulation of stator bars protruding from the core. Alternating flux generated by the stator bars induces eddy currents in the second flux-shield whose flux repels the source flux. Only a small fraction of the source flux is hence received by all core-end parts, thereby greatly reducing their temperatures.

Abstract: A stator includes a stator core, a stator coil comprised of a plurality of electric wires, and at least one restraint. Each of the electric wires has a plurality of in-slot portions received in slots of the stator core and a plurality of turn portions that are located outside of the slots to connect the in-slot portions. The restraint is mounted to end parts of the turn portions belonging to a turn portion group of the electric wires to restrain relative radial movement between the turn portions of the turn portion group. All the turn portions of the turn portion group protrude from the same slot of the stator core. The end parts of the turn portions respectively adjoin the in-slot portions of the electric wires received in the same slot of the stator core and align with each other in a radial direction of the stator core.

Abstract: An arrangement having at least two generator bars for a stator of an electrical generator which are electrically connected to one another via a respective bar end is characterized, according to the invention, by the fact that the respective bar ends, which are electrically connected to one another, of the at least two generator bars are braced with respect to one another by means of a tape.

Abstract: A group of three stator windings for a stator of an electric machine, a stator arrangement, a generator, and wind turbine are provided. The first winding head segments of the three stator windings differ in form such that the first winding head segments of at least two of the three stator windings are differently tilted in radial direction of the electric machine and the length of the three stator windings is substantially the same.

Abstract: An example end cap of a stator segment is provided for use in locating wires in a segmented stator assembly in desired positions. The end cap generally includes a body and an inboard wall. An identifier is defined by the inboard wall of the end cap for use in determining wire sizes to be used with the end cap. Terminal pockets are provided in the body for receiving the wires and making desired electrical connections, and steps located in the terminal pockets help secure the connectors in the terminal pockets. Plateaus, and troughs defined in the plateaus, are located outside the terminal pockets for use in trimming wires received in the terminal pockets as desired. And, retaining structures are located around the end cap to help with locating the wires in the desired positions.

Abstract: Embodiments of the invention relate generally to lead path configurations in generator rotors and, more particularly, to a support apparatus for a main lead and generator rotors incorporating such a support apparatus. In one embodiment, the invention provides a support apparatus for a main lead of a generator rotor, the support apparatus comprising: a cross-sectionally L-shaped body having: a first portion; and a second portion substantially perpendicular to the first portion, wherein the first portion includes an arcuate first surface for interfacing with a centering ring of the generator rotor and an arcuate second surface adapted to be substantially parallel to a rotor shaft of the generator rotor; a main lead passage extending along the arcuate first surface of the first portion and through the second portion.

Abstract: An example end cap of a stator segment is provided for use in locating wires in a segmented stator assembly in desired positions. The end cap generally includes a body and an inboard wall. An identifier is defined by the inboard wall of the end cap for use in determining wire sizes to be used with the end cap. Terminal pockets are provided in the body for receiving the wires and making desired electrical connections, and steps located in the terminal pockets help secure the connectors in the terminal pockets. Plateaus, and troughs defined in the plateaus, are located outside the terminal pockets for use in trimming wires received in the terminal pockets as desired. And, retaining structures are located around the end cap to help with locating the wires in the desired positions.

Abstract: A support system is provided for a dynamoelectric machine having a stator and stator bars connected to a connection ring assembly. The support system includes at least one stator bar support bracket and one or more support rings connected to the stator bars. A connection ring support bracket supports the connection ring assembly. A mount is connected to the connection ring support bracket. The mount permits axial movement of the stator bars, the stator bar support bracket, the support rings, and the connection ring assembly due to thermal expansion experienced during operation of the dynamoelectric machine.

Abstract: Heat discharging property of the stator coil end is improved effectively in a rotating electric machine. A motor as the rotating electric machine includes a stator and a rotor. The stator includes a stator core and resin mold coil ends provided on both axial ends thereof. Column-shaped projections projecting in the axial direction are provided on axial side surfaces of resin mold coil ends at a plurality of positions. Cooling oil supplied from above the resin mold coil ends effectively cools the resin mold coil ends.

Abstract: A motor includes a plurality of bus wires of a common phase which are put together before being guided in a common passage to minimize the space arranged to guide the bus wires. Also, the bus wires of a common phase are easily insulated from those of different phases, and an axial height of the motor is reduced. Further, a radial width necessary to guide the bus wires is reduced, and an axial height of the motor including a sensor portion which detects a rotary position of the motor is reduced. Also, the bus wires are easily extended from the armature, and an amount of work required to connect the bus wires and the terminals is reduced. Furthermore, the connection terminal portion does not interfere with the bus wires when they are being guided.

Abstract: Dynamoelectric device and stator bar therefor, where the stator bar includes a linear portion for positioning in a slot of a stator core, the slot extending in a radial direction relative to an axis of the stator, and an end arm portion having an involute-on-cone bend relative to the linear portion and an elongated cross-section that is substantially aligned with the radial direction of the slot.

Abstract: The invention concerns a winding head isolation element (1) with a body (2, 3) having a first longitudinal side (5), a second longitudinal side (6), a first transversal side (7) and a second transversal side (8), and a tongue portion (9) projecting from the first longitudinal side (5), the body (2, 3) and the tongue portion (9) being made of a flat material. It is endeavored to keep the efforts and costs for the mounting of the isolation element on a winding head small. For this purpose, the body (2, 3) is deformable around an axis (4) extending transversely to the tongue portion (9) and has at least one opening (21, 22) extending transversely to the tongue portion (9), said tongue portion (9) being adapted for insertion through the opening.

Abstract: The invention relates to a DC motor 1 comprising a cylindrical coil carrier 7; 17 comprising wire guide element 9; 10, 12 for guiding a first winding wire 80; 180 and a second winding wire 81; 181 of an air-gap winding on both side end sections, wherein the first winding wire 80; 180 and the second winding wire 81; 181 each comprise rectangular winding segments 20; 120, wherein the rectangular winding segments 20; 120 of the second winding wire 81; 181 are disposed overlapping on the cylindrical coil carrier 7; 17 and the wire guide elements 9; 10, 12 are designed for guiding the first winding wire 80; 180 and the second winding wire 81; 181 past each other.

Abstract: An apparatus axial stresses a stator winding of an electrical machine, the winding including a plurality of winding bars, the ends of the winding bars passing axially out of a core of a stator and forming a widened end winding at least one axial end face of the core. A plurality of winding supports is distributed circumferentially and substantially at a right angle with respect to the end winding on the at least one axial end face of the core. At least one axially acting compression spring device is configured to support the plurality of winding supports on the at least one axial end face of the core and to axially stress the plurality of winding supports. A readjusting device communicates with at least one of the plurality of winding supports and has an axially adjustable contact surface, the at least one axially acting compression spring device being axially supported on the core and on the axially adjustable contact surface of the readjusting device.

Abstract: A dynamoelectric machine includes a rotor having a plurality of adjacent coils; a spaceblock disposed between adjacent coils so as to define first and second cavities adjacent the spaceblock and between mutually adjacent coils; and the spaceblock includes a channel disposed in a coil facing surface of the spaceblock for intercepting and redirecting a circulating coolant flow to the first cavity.

Abstract: In one aspect, a stator is provided having a first cylindrical surface with a plurality circumferentially spaced winding slots, each winding slot extending along an axial length of the first cylindrical surface and formed to embed a segment of a single stator winding, Each stator winding is pre-formed as a closed loop and two substantially parallel segments of each stator winding formed to be embedded in a first and a second winding slot of the stator, with the second winding slot being the third adjacent winding slot to the first winding slot. Each of the three stator windings has a first winding head segment leaving the winding slots in axial direction of the stator, the first winding head segment of a first winding of the three stator windings describing in space in parts a combination of a rotation about an axis and a translation along that axis.

Abstract: A rotating electric machine including an edgewise coil formed of a rectangular wire is efficiently cooled. The edgewise coil is formed by winding the rectangular wire around a tooth. In order to wind the rectangular wire around the tooth of rectangular shape, supporting portions determining the position of the edgewise coil relative to the tooth are provided. A coolant flows through a cooling water channel provided between the tooth and the edgewise coil formed of the rectangular wire and positioned by the supporting portions.

Abstract: A downhole electric motor device has a longitudinally extending tubular housing; a stator part deployed within the tubular housing; a stator coil winding looped through the stator part with an end turn having an apex; and a connecting device connecting between at least one of the coil windings and an end of the housing adjacent to an end of the stator part, thereby supporting the coil winding.

Abstract: According to one embodiment, a rotary machine stator includes a cylindrical stator core, an insulating film, and a ring-shaped insulator. The stator core includes a slot and a slot opening. The insulating film is formed cylindrical to be in close contact with the inner surface of the slot. The insulating film includes a gate on both ends that is bent to form a film opening as wide as or wider than the slot openings. The insulating film is inserted in the slot such that a film axial direction end of the insulating film protrudes from an axial direction end of the stator core. The insulator is attached to both ends of the stator core. The insulator includes an insulator slot and an insulator opening in substantially the same shape as the slot and the slot opening, respectively, and a lock to lock the film axial direction end.

Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.

Abstract: A pair of connecting wire hooks are disposed on both sides of a nozzle receiving groove in an extended slot space (a first extended space) to sandwich an extended portion of an extended virtual space (a third extended space). In this configuration, the pair of connecting wire hooks are not located within the third extended space. Thus, in the stator for rotary electric machine, the space factor of the winding portion may be increased in a situation where the connecting wire hook is disposed within the first extended space.

Abstract: A rotor for an electric machine includes a rotor yoke having a plurality of axial winding slots distributed on an outer periphery of the rotor yoke; a winding bar disposed in one of the plurality of axial winding slots, the winding bar having at least one winding end emerging axially from the rotor yoke so as to form an end winding; and a retaining device including a plurality of radial bolts, each of the plurality of radial bolts having a head fixedly connected to a shank, wherein the retaining device retains the end winding against a centrifugal force acting on the end winding.

Abstract: Each coil fixing member is placed between a stator coil and at least one end surface of a stator core in an electric rotary machine in order to suppress a displacement between the stator core and the stator coil. The coil fixing member consists of a spacer and a bolt. The bolt and a corresponding screw hole formed on an end surface of the stator core are used to fix the stator core in the electric rotary machine. The spacer consists of a main body part and a bolt fixing part. The bolt fixing part has a bolt hole. The main body part has a tapered shape. The main body part is placed between the end surface of the stator core and connection parts of windings of the stator coil, and fixed to the stator core by the bolt through the bolt hole of the bolt fixing part.

Abstract: A motor having a rotor and a stator that houses the rotor in a rotatable manner is herein provided. One of the rotor and the stator comprises at least one permanent magnet. The other of the rotor and the stator comprises at least one core that faces the at least one permanent magnet, and at least one coil that magnetizes the at least one core. The core comprises at least one extension plate that is formed on at least one end face of the core in an axial direction. The extension plate extends parallel to rotation axis of the rotor, and has a magnetic anisotropy whose axis of easy magnetization is substantially parallel to the rotation axis of the rotor.

Abstract: In a rotor for a rotating electrical machine, a flange of an insulating bobbin is formed with a first hook portion and a second hook portion. The first hook portion directs a lead of a field coil both against the winding direction of the field coil and radially inward. The first hook portion has a first groove in which is hooked a proximal portion of the lead. The second hook portion directs the lead axially outward. The second hook portion has a second groove which has an open end on a radially inner periphery of the second hook portion, a closed end positioned radially outward of the open end, and a neck between the open and closed ends. The second hook portion has an intermediate portion of the lead hooked in the second groove between the neck and closed end of the second groove.

Abstract: A rotary electric machine having a stator including a coil; and a cooling unit that cools a coil end of the coil, which projects in an axial direction of the stator, wherein the cooling unit includes: an outer periphery cooling portion that is disposed along an outer peripheral surface of the coil end and includes a plurality of injection holes that inject a cooling medium onto the outer peripheral surface; and an end surface cooling portion that is disposed along an axial end surface of the coil end and includes a plurality of injection holes that inject the cooling medium onto the axial end surface.

Abstract: An objective is to provide a motor stator that may achieve: a reduction in parts costs by shaping coil ends so that length thereof is reduced, thereby reducing the amount of use of copper, and minimizing the amount of use of binding strings for securing the coil ends in place; a reduction in manufacturing process costs by a structure which allows a protector and a wire lead outlet part to be easily assembled; and then an improvement in quality of a stator by firmly holding the coil ends and the protector.

Abstract: Dynamoelectric device and stator bar therefor, where the stator bar includes a linear portion for positioning in a slot of a stator core, the slot extending in a radial direction relative to an axis of the stator, and an end arm portion having an involute-on-cone bend relative to the linear portion and an elongated cross-section that is substantially aligned with the radial direction of the slot.

Abstract: A rotary electric motor includes a cylindrical rotor having an outer peripheral side, a stator provided to surround the outer peripheral side of the rotor with a gap between the stator and the rotor, and a load side bracket having a recess and provided on a load side of the stator. The stator includes stator coils and a stator core having teeth portions around which the stator coils are wound. A load side coil end of each of the stator coils protrudes from a load side end face of the stator core. At least two of an inner peripheral surface, an outer peripheral surface, and an end face of the load side coil end contact an inner surface of the recess via an insulator.

Abstract: A rotating electrical machine, especially a turbogenerator, includes a rotor and a stator, which concentrically surrounds the rotor and is terminated at each of the two axial ends by a laminated press plate (14), which is constructed from a stack of individual press plate laminates (30). The electrical properties are improved by providing the press plate laminates (30) at least partially with slits (26) for reducing the eddy current losses.

Abstract: An electric motor core member includes a body having an inner diametric portion including an inner arcuate surface and an outer diametric portion including an outer arcuate surface. The electric motor core member further includes a plurality of wall members provided on the main body. Each of the plurality of wall members projects outwardly from the outer arcuate surface and is arranged in a spaced relationship to define a plurality of conductor isolation channels. Each of the plurality of conductor isolation channels is adapted to receive one of a plurality of conductors with the plurality of wall members providing electrical isolation between adjacent ones of the plurality of conductors.

Abstract: An electric motor that does not provide new terminals for carrying out conductive caulking, and further, facilitates the work of using a conductive caulking machine. An electric motor coil connecting structure that connects conductors connected to a power input member and lead terminals of coils by conductive caulking and connects the power input member and the lead terminals of the coil electrically. One end of each of the conductors is formed into a terminal-shaped portion in which the lead terminals of the coil can be fitted and temporarily retained. The lead terminals of the coil are fitted in the terminal-shaped portion of the conductors and temporarily retained, and connected by conductive caulking.

Abstract: A wedge placed between adjacent coils in a generator comprises a wedge body having a generally triangular portion to be positioned at a radially inner location, and a radially outer portion. The radially outer portion includes ends that will be spaced at axial ends of the wedge when the wedge is positioned within a generator. The ends have a first surface spaced a first distance from an apex of the triangle. The end walls extend above the first surface at each of two spaced positions axially inwardly of the ends of the wedge. The end walls are connected to side walls that extend near circumferential edges of the wedge. An open pocket is formed within the wedge body at locations between the side walls and axially between the end walls.

Abstract: An armature winding of an electric rotating machine is provided, which includes at least one armature winding bar composed of a plurality of element wire conductors, wherein the armature winding bar includes an element wire conductor configured to have twisted transposing angles of 180 degrees at one border zone and a middle zone in a winding slot and a twisted transposing angle different from 180 degrees at the other border zone of the winding slot of the element wire conductor.

Abstract: An oscillation damping system for stator windings is provided which includes a supporting component of an end winding. The supporting component is equipped with damping elements, which are arranged asymmetrically in the circumferential direction in order to suppress excited natural oscillations. Masses or springs and screw-type restraints which connect the supporting component to the stator housing are suitable as damping elements.

Abstract: An electric rotary machine, an armature for use in the electric machine, a method of forming an electric rotary machine and a forming machine for an armature of an electric rotary machine are disclosed wherein insulator-coated coils are wound in slots of an armature core from which lower and upper layer coil extensions extend and are connected to a commutator. The upper layer coil extension has a contour deformation part at an intersecting region where the lower and upper layer coil extensions intersect with each other to have an insulating distance between the lower and upper layer coil extensions. The forming machine includes a work holder holding the armature, and a forming jig forming a curvature portion on the upper layer coil extension.

Abstract: A baffle for guiding cooling fluids in a power generator cooled by a cooling fluid and having a flange, a stator, and an end stator has an inclined surface configured to direct a first portion of the cooling fluid flow towards the flange, a second portion of the cooling fluid flow towards the end stator and a third portion of the first portion towards an angled surface of the flange.

Abstract: An electrical machine includes a basic bed having a opposite axial end sides and slots, wherein the slots an the end sides have each a slot end opening. A winding system has electrical conductors which are accommodated in the slots wherein the electrical conductors extend out on one of the end sides of at least one of the slot end openings. The electrical conductors are hereby laid within a bridging region extending in a circumferential direction on the at least one end side and are inserted into at least one other one of the slot end openings. Arranged on the at least one end side in the bridging region is a first guide element for guiding the electrical conductors of a first subwinding of the windings stem. An end late is arranged on the at least one end side and has at least one axially protruding separating element with the first guide element having a base bearing a against the separating element.

Abstract: A collar is to be positioned on a generator and includes an inner bore sized to be received on an outer periphery of a generator shaft. The collar has an outer periphery, which is generally hexagonal. The collar has an axially extending ledge to be received within an inner periphery of an end turn support in a generator.

Abstract: An electrical machine may include a plurality of stator coil ends each having a fluid passageway therein. The electrical machine may further include a plurality of rings and a plurality of axial connector assemblies for connecting the plurality of stator coil ends to the plurality of rings. Each axial connector assembly may include a header cap including an open end received on a respective stator coil end and a closed end opposite the open end, the closed end defining a coil spherical connector portion. The header cap may have a fluid port therein coupled to the fluid passageway of the respective stator coil end. A ring spherical connector portion may be carried by a respective ring, and a pair of connector members may receive therebetween the coil and ring spherical connector potions.

Abstract: The invention relates to an electric machine (1) comprising a stator (21) and a rotor. The stator (21) includes at least one winding system having a plurality of coils (2) wherein start and end of the corresponding coils (21) is fixed on an end face of the stator (21) by means of a circuit support (7) and contacted in such a manner as to obtain predeterminable connections of the coils (2).

Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.

Abstract: A motor includes a stator and a bus bar supported axially above the stator. The bus bar includes a concave portion arranged in a lower surface thereof facing toward coils of the stator. In a gap defined between the coil and the concave portion, a portion of the wire extracted from the coil and wound in the circumferential direction (i.e., a crossover wire portion) is accommodated. The bus bar includes a wire-positioning hole through which the wire is led to a terminal to be connected with the wire.

Abstract: A stator for an electric machine includes multiple conductive coils. Each coil defines a loop that extends axially through the elongate core, exits the core through an end face, and reenters the core through the end face. A first subset of the coils collectively form a first radial layer axially exterior the core and a third radial layer axially exterior the core. Each coil in the first subset resides in both the first layer and the third layer. A second subset of the coils collectively forms a second radial layer axially exterior the core and a fourth radial layer axially exterior the core. Each coil in the second subset residing in both the second layer and the fourth layer.

Abstract: A stator comprises a core, a plurality of wire coils, an end turn phase insulator, and at least one lead wire. The wire coils are wound through the slots of the stator and form end turns as they wind from slot to slot. The end turn phase insulator comprises an end turn separating portion and a lead wire restraining tab. The end turn separating portion is sandwiched radially between an inner end turn and an outer end turn. The lead wire restraining tab extends from the end turn separating portion and is partially wrapped over the outer end turn in a manner sandwiching the lead wire between the lead wire restraining tab and the outer end turn. This prevents the lead wire from migrating into the core of the stator.