Abstract: A design for and method of winding an electric motor, generator or other electrical machine using multiple strands of wire preformed into a wave shape with a plurality of legs connected by shaped end turns. This results in efficient packing and improved machine performance in terms of both efficiency and power density without the need for flux concentrators. The conductors or windings may be preformed so as to be a self supporting structure, aiding assembly and eliminating the need for an iron core.

Abstract: A device, including a rotor, a stator, a coil wound around the stator, wherein the stator has a coil support structure having at least one side edge arranged along a line which is not parallel to a line extending from an axis of the rotor through a center of the coil.

Abstract: A single stator electric machine includes a plurality of magnets for generating a first magnetic field. Each respective magnet represents a respective rotor pole. A magnet holder retains the plurality of magnets. A stator is disposed radially outward from the plurality of magnets for generating a second magnetic field. The stator includes a plurality of stator poles separated by slots with each of the stator poles having a concentrated winding with a respective number of turns formed around each respective stator pole. Each respective concentrated winding within the stator comprises non-overlapping phases which increase an active length of the windings of the stator and reduce an overhang of each respective winding with respect to each stator pole for improving torque efficiency. A number of rotor poles is at least eight and the number of rotor poles and a number of stator slots have a least common multiple of at least 36.

Abstract: A stator for a generator with closed magnetic path comprises a coil support frame and a conductive wire unit arranged on the coil support frame. The conductive wire unit comprises a plurality of stacked basic conductive wire units. The basic conductive wire unit comprises a conductive wire layer and a magnetic-conducting sheet conformably stacked on and insulated from the conductive wire layer. The conductive wire layer comprises a plurality of conductive wires arranged in parallel and insulated from each other, or a conductive sheet with a plurality of elongated through gaps extending from a central region of the conductive sheet to a circumferential region of the conductive sheet, elongated portions between the elongated gaps function as conductive wires connected in parallel between the central region and the circumferential region. The conductive wire unit further comprises a shaped magnetic-conducting basic plate.

Abstract: Provided is an outer rotor type motor capable of reducing workload for wiring and connecting coil leads without reducing a coil space factor while keeping the motor small. Coil leads extracted from same-phase coils of respective stator units pass between pole teeth of the stator units, and are respectively connected to inter-phase connection terminals at one end and then connected in series with each other, the stator units comprises a plurality of individual same-phase stator units which are stacked together, and the inter-phase connection terminals are protruded from a main terminal body. A drive signal input terminal and external input terminals, to which the other ends of coil leads extracted from the respective phase coils are respectively connected, and a drive signal input terminal and an external input terminal, to which the other ends of coil leads extracted from the respective phase coils are respectively connected, are respectively connected and wired inside the main terminal body.

Abstract: A coreless electric machine includes: a permanent magnet on a first member; N-phase (N?2) air-core electromagnetic coils on a second member; and a coil back yoke on the second member, each electromagnetic coil including a conductor bundle in which a conductor is wound M times (M?2), coil sub-aggregates are provided, each including the N electromagnetic coils of the respective N phases and in each of which a conductor bundle forming an effective coil area of a first-phase electromagnetic coil contacts a second conductor bundle forming an effective coil area of another phase electromagnetic coil, and the second conductor bundle is in an air-core portion of the first phase electromagnetic coil, and the coil sub-aggregates are arranged along the cylindrical area, in which the coil sub-aggregates do not overlap in a radiation direction of the cylindrical area, and adjacent coil sub-aggregates contact each other.

Abstract: A dust collector comprises a tank having an intake opening; a head unit mounted on the tank; a motor provided on the head unit and having a rotor, a stator and an output shaft; a fan provided on the head unit and rotating under power from the motor, for sucking air or liquids into the tank from the intake opening; and a filter housed in the tank, that separates dust from the air or liquid sucked into the tank. The rotor has a coil disc having multiple roughly annular coils arranged in a circumferential direction centered on the output shaft in the direction of the axial line of the output shaft. The stator has a magnetic flux generation mechanism that generates magnetic flux that passes through the coil disc in the direction of the axial line of the output shaft.

Abstract: An AC motor is provided. In the AC motor, there are M pieces (M is an integer of 3 or more) of stator pole groups SPG are arranged in a rotor axis direction, where each of the stator poles groups is composed of a plurality of stator poles which are for the same phase and arranged in a circumferential direction of the motor. Between the stator pole groups SPG, “M?1” pieces of annular windings WR are arranged which allow one-way current to flow therethrough. The windings WR are arranged such that the directions of current passing therethrough are reversed in turn in the rotor axis direction. The stator pole groups SPG are excited to generate magnetic fluxes ?G directed in a one way. The excited directions of the magnetic fluxes ?G are reversed in turn in the rotor axis direction.

Abstract: The present invention relates to a stator of an alternator, providing an elongated stator body having a plurality of parallel grooves, winding a plurality of wires in the plurality of different grooves, and then rolling the elongated stator body wound with the wires into an annular shape to form an annular stator.

Abstract: The present invention relates to a stator of an alternator, providing an elongated stator body having a plurality of parallel grooves, winding a plurality of wires in the plurality of different grooves, and then rolling the elongated stator body wound with the wires into an annular shape to form an annular stator.

Abstract: A group of coils used in a stator of a rotating electrical machine, wound continuously upon a divided core with a crossover wire, in which 2N coils (where N is a natural number) are arranged at approximately regular intervals, wherein a winding direction of N coils, which are first through Nth continuously wound coils, of a front half of the 2N coils, and a winding direction of rear half coils which are (N+1)-st through (2N)-th continuously wound coils, are opposite.

Abstract: A coil wire for a rotating electric machine includes: an element wire assembly formed by bundling a plurality of element wires, the plurality of element wires being coated so as to be insulated from each other; and a coating member having conductivity, the coating member coating a periphery of the element wire assembly, the coating member being positioned in a slot of a stator of the rotating electric machine and being obliquely wound with respect to a longitudinal direction of the coil wire, and the coating member being formed with a plurality of conductive belts electrically insulated from each other.

Abstract: A stator for a motor that includes an armature coil that generates an N-pole and an S-pole by applying a current and forty-eight slots radially formed at which the coil is disposed and in which the armature coil alternately implements N-poles and S-poles by arranging six slots as a single unit as the current is applied to the coil. The slot includes a plurality of phase drawing out slots, and when the order of the phase drawing out slots is determined in a clockwise direction by setting one phase drawing out slot as a first phase drawing out slot, at least two methods of winding the armature coil to turn around the slot may be used to decrease a distance from the first phase drawing out slot to the last phase drawing out slot to a minimum value by setting a cell between neighboring slots as a unit.

Abstract: A brushless direct current (BLDC) motor of axial gap type includes a rotational axis, a stator rotatably connected to the rotational axis, a rotor disposed apart from the stator in an axial direction of the rotational axis, fixedly connected to the rotational axis, and including a permanent magnet formed on an inner surface thereof to face the stator. Further, the stator is formed as wiring board and includes a plate-like board body and a coil pattern. The board body is disposed in a horizontal position with regard to the rotor and has a central hole into which the rotational axis is inserted. The coil pattern is formed in the board body and arranged in a radial form around the central hole.

Abstract: A three-phase, high voltage motor for use in a scroll compressor includes a stator core having an annular rim and a plurality of teeth extending radially inward from the rim. Aluminum windings are wrapped around teeth of the plurality of teeth of the stator core. The windings are spaced 120 electrical degrees from each other. The motor further includes a rotor body that is rotatably mounted inside the stator core and includes an external surface facing the stator core.

Abstract: A contact shear horizontal (SH) mode guided-wave magnetostrictive transducer including: a transduction band which is disposed on a surface of an object to be tested and in which electromagnetic acoustic transduction occurs; and radio frequency (RF) coils disposed on the transduction band, wherein the transduction band includes a plate-shaped solenoid including a magnetostrictive strip in which the electromagnetic acoustic transduction for transmitting or receiving SH mode guided waves occurs, and solenoid coil wound in a spiral form along a circumference of the magnetostrictive strip so as to form a bias magnetic field in a lengthwise direction of the magnetostrictive strip, and the RF coils are used to form a dynamic magnetic field in a widthwise direction of the magnetostrictive strip or to detect a change of magnetic flux in the magnetostrictive strip.

Abstract: The stator of the electric motor comprises: a stator core; tooth sections being radially extended from the stator core; an even number of slots, each of which is formed between the tooth sections; an insulator covering the tooth sections; and motor coils being wound in the slots. The insulator has guide projections, each of which corresponds to each of the tooth sections so as to guide a magnet wire. The guide projections have guide sections, each of which includes a base end part and a front end part. In each of the guide sections, a radial thickness of at least one part located in the base end part is thin, a radial thickness of the front end part is thicker than that of the base end part. The guide sections are formed in same side faces of the guide projections arranged in the circumferential direction.

Abstract: An electrical machine (10) has three phase windings (12). Each phase winding (12) is connected to a respective current source (18). Each current source 18 provides alternating current to the corresponding winding (12). The current source 18 is connected independently to the respective winding (12). The electrical angles of the phase windings (12) are so arranged that none of the phase windings (12) has a zero torque angle which coincides with a zero torque angle of another phase winding (12).

Abstract: An electric motor assembly configured for use in a downhole pumping system includes a plurality of stator coils. Each of the plurality of stator coils includes magnet wire that has an insulator surrounding a conductor. In preferred embodiments, the insulator is manufactured from a material selected from the group consisting of polyether ketone and polyether ketone ether ketone ketone.

Abstract: A dynamoelectric device comprises a plurality of armatures arranged circumferentially about an axis, sets of electrically conductive winding members that extend axially through the stack of laminates and are positioned circumferentially between each adjacent pair of the armatures, and first and second layers of end-turn members. Each of the end-turn members of the first axial layer is connected to one of the winding members. Each of the end-turn members of the first axial layer extends clockwise circumferentially from its respective one of the winding members. Each of the end-turn members of the second axial layer is connected to one of the winding members and to each of the end-turn members of the first axial layer of end-turn members. Each of the end-turn members of the second axial layer extends counter-clockwise circumferentially from its respective one of the winding members. The winding members are each formed of Litz wire.

Abstract: A first winding portion from a set of winding portions has a set of coils. Each coil of the first winding portion is associated with a different electrical phase from a set of electrical phases. Each coil of the first winding portion circumscribes a different area from a set of areas circumscribed by the set of coils of the first winding portion. A second winding portion has a set of coils associated with the set of electrical phases and a third winding portion has a set of coils associated with the set of electrical phases. The first winding portion at least partially overlaps the second winding portion and the third winding portion such that each area from the set of area is substantially circumscribed by a coil associated with each electrical phase from the set of electrical phases.

Abstract: There is provided a winding to be wound at a stator of a rotary electric machine. The winding is produced from a flat wire having a rectangular cross section along a plane perpendicular to a length-wise direction. The flat wire is coated with an electric insulating layer and is bent to have curves at given portions of the flat wire in the length-wise direction. The curves are located on an axial outer side of the stator. The cross section of the flat wire has four corners, among which mutually-adjacent two corners are lager in curvatures than remaining mutually-adjacent two corners. The mutually-adjacent two corners whose curvatures are smaller are positioned on a circumferential outer side of each of the curves and the mutually-adjacent two corners whose curvatures are larger are positioned on a circumferential inner side of each of the curves.

Abstract: An electrical submersible pumping system includes a pump assembly and a motor assembly. The motor assembly includes a plurality of stator coils and each of the plurality of stator coils comprises magnet wire. The magnet wire has an insulator surrounding a conductor and the insulator is manufactured from a polyether ether ketone film. In another aspect, the preferred embodiments provide a method for manufacturing a motor assembly for use in an electrical submersible pumping system. The method includes steps of preparing magnet wire having an electrical conductor and a polyether ether ketone film insulator.

Abstract: A permanent magnet motor, generator or the like that is constructed with a concentrated winding using a separate tooth. This tooth is preloaded in such a way to achieve high structural rigidity and good magnetic performance.

Abstract: An electric motor or generator machine is provided. The machine includes a rotor rotatable about an axis, as well as a stator. The stator includes a stator core and wiring wound around the stator core. The stator core includes a plurality of arcuately spaced apart alternating primary teeth and secondary teeth, such that each secondary tooth is spaced between a corresponding pair of primary teeth. The wiring is wound about the primary teeth to form a plurality of coils. The plurality of coils includes an A-phase coil, a B-phase coil, and a C-phase coil. Each of the primary teeth includes a generally radially extending primary arm and a generally arcuately extending primary crown. Each of the primary crowns spans one hundred sixty (160) to two hundred (200) electrical degrees.

Abstract: A permanent magnet motor, generator or the like that is constructed with a concentrated winding and edge form wound stator coils. This achieves less eddy current losses in the windings as well as a much higher power density than conventional techniques.

Abstract: A conductive element is provided and includes an electrically conductive material and a coating surrounding the electrically conductive material to form a coated member. The coated member is formed with a crown defined by bends in first and second transverse dimensions. The electrically conductive material is formed to define at least one divot proximate to the crown. The at least one divot is discernible through the coating.

Abstract: A first insulation-coated conductive wire of a first coil forming body is positioned between one conductive wire exposed region, from among the conductive wire exposed regions that are positioned on both sides of a curved portion positioned on an outermost periphery of a coil assembly, and a second insulation-coated conductive wire that forms the curved portion, and the first coil forming body is different from a second coil forming body that has the second insulation-coated conductive wire, and the first insulation-coated conductive wire of the first coil forming body forms another curved portion.

Abstract: A step motor having a stator constructed with six teeth per pole is achieved for a stator inner diameter (ID) less than one inch (25.4 mm) by a either (1) reducing the pitch angle of the outer teeth of each pole (e.g., to at most 6.8 degrees for a 19 mm stator ID), or (2) narrowing the tooth width of those outer teeth (e.g., to at most 0.0175 inch or 0.444 mm for a 19 mm stator ID), or (3) combination of both. These changes allow sufficient space (i.e., wider than 0.052 inch or 1.321 mm) between poles for passage of a winding needle, even with the extra stator teeth. Although narrowing the pitch angle and reducing the tooth width do sacrifice some torque contribution from each tooth, there still results a net overall gain in torque.

Abstract: Disclosed is a stator for an electric machine. The stator is provided with a stator core, and first and second series of coils each formed into a predetermined shape. Each of the coils in the first series is provided with a pair of first coil ends which respectively protrude from both end faces of the stator core. Each of the first coil ends is provided with a pair of bent portions which extend outward in the radial direction of the stator, and a bridge portion which connects the bent portions. Each second coil end is provided with a pair of upright portions and a bridge portion which connects the upright portions. The bridge portions of the coils in the first series are disposed outside the bridge portions of the coils in the second series in the radial direction of the stator. The bridge portion of each of the coils in the second series extends across the bent portions of two adjacent coils in the first series.

Abstract: Discloses is a motor for an environmentally friendly vehicle. In particular, the motor includes a stator core including a first coating portion and a second coating portion. The first portion and the second coating portion are adjacent to each other, wound with a coil on an outside thereof and fixedly installed in a motor case and the first coating portion is thinner than the second coating portion. The motor also includes a rotor core configured to move between the first coating portion and the second coating portion depending upon a speed of the motor. A controller is configured to control an operation of an actuator to move the rotor between the first coating portion and the second coating portion to maximize the efficiency of the motor depending upon the speed of the motor.

Abstract: A stator includes: a stator core having an almost annular outer core and an inner core arranged inside the outer core; and a bobbin having a cylindrical body part around which a winding wire is wound and a flange part that is formed so as to rise up from the cylindrical body part, with a plurality of bent parts and an edge part.

Abstract: A stator includes a core and a coil group. The core includes a ring portion, and a teeth portion preferably including twelve teeth portions projecting from an inside of the ring portion toward a center thereof. The coil group preferably includes twelve coils arranged in each of the teeth portions. The core is defined by coupling twelve cores which respectively include a teeth portion. The coil group preferably includes six coil pairs each including two coils joined to each other by a single conductive line. When the core is divided into a phase region and a neutral region equally along the axial direction, a first group of coils in each of the six coil pairs are arranged in the phase region, and the other coils are arranged in the neutral region.

Abstract: An alternator assembly including a stator disk having at least one slot positioned around a circumference of the stator disk. The slot functions to accommodate a removable stator coil spool. The stator coil spool is inserted into and extracted out from the stator disk through the slot.

Abstract: This patent describes a coil assembly for a three phased permanent magnet (PM) iron free axial flux multi disc electric machine. The coil assembly is assembled from coil elements (15) made of flat wire (9), and then machined so they can be assembled into a flat disk. The coil elements (15) can further be inserted into a frame (22), and the coil elements (15) can be connected by wires (29) which do not cross each other.

Abstract: A modular electrical machine includes multiple integrated rotor modules releasably mounted upon a power transmission member to form a torus-like structure, wherein each integrated rotor module includes a series of parallel rotor plates spaced apart to provide an air gap between successive rotor plates in the series. The rotor plates hold permanent magnets securely within the air gap. Corresponding stator modules, each made of multiple air-cored coils potted in a resin material to form a blade. Each blade is externally supported with respect to the rotor module and is positioned between the permanent magnets within one of the air gaps between successive rotor plates.

Abstract: A stator includes an annular stator core having a plurality of slots arranged in the circumferential direction at predetermined intervals and a stator coil formed of a plurality of electric conductor wires mounted on the stator core. Each of the electric conductor wires has a plurality of in-slot portions received in the slots of the stator core and a plurality of turn portions that connect, on the outside of the slots, adjacent pairs of the in-slot portions. The stator coil has first and second coil end parts and that respectively protrude axially outward from a pair of axial end faces of the stator core. At each of the coil end parts, the turn portions of the electric conductor wires are stacked in a radial direction of the stator core, and the axial heights h1 of the turn portions are set so as to gradually increase from the radially inside to the radially outside.

Abstract: A method of forming a weld joint includes removing a portion of an insulator from a first core of a first magnet wire and a second core of a second magnet wire so that the first wire has a first heat affectable zone and a first insulator portion adjacent the first zone, and the second wire has a second heat affectable zone and a second insulator portion adjacent the second zone. The first and second insulator portions include the insulator disposed on the first and second cores, respectively. The first and second zones have a first and second distal end spaced apart from the first and second insulator portions, respectively. The method includes welding together only the first end and the second end to form the weld joint, wherein welding does not transfer heat to the first and second insulator portions sufficient to burn the insulator.

Abstract: A stator core includes a plurality of slot segments, a plurality of stator winding conductors arranged in select ones of the plurality of slot segments, and a ceramic covering provided on one or more of the plurality of stator winding conductors. The ceramic covering includes an adhesive bonded to the one of the plurality of stator winding conductors to provide insulation for the one or more stator winding conductors.

Abstract: Method for producing a stator winding (18) of an electric machine (10), in particular an AC generator, wherein the stator winding (18) has at least n phase windings (120, 121, 122, 123, 124), and one phase winding (120, 121, 122, 123, 124) has a plurality of directly successive wound coils (82) with coil sides (88) and coil side connectors (91), wherein the coils (82) are divided into first coils (82.1) and second coils (82.2), with a forming tool (100), in which slots (105, 106; 105?, 106?) are provided which are suitable for accommodating the coils (82), wherein a first coil (82.1) is arranged in a slot (105; 105?), and a second coil (82.2) is arranged in another slot (105; 105?), characterized in that n?1 slots (105, 106; 105?, 106?) are arranged between the first coil (82.1) and the second coil (82.2).

Abstract: A intelligent cascaded synchronous electric motor-generator tandem of cumulative compound excitation comprises at least a synchronous electric motor-generator tandem (namely MG tandem), a storage battery cluster and an autotransformer. Each MG tandem comprises at least a pair of motor and generator having a common stator and a common rotor shaft. The storage battery cluster, which provides a DC power to general loads and motor, serves as a DC power reservoir to be recharged by generator. The autotransformer serves to regulate the AC voltage output from generator via multiple output taps thereon for supplying various AC voltages to different external loads. By integrating all components aforesaid with common magnetic flux interacted mutually, upon being energized by DC power from storage battery cluster, the motor will transfer rotational torque to drive the generator in enhanced synergistic manner.

Abstract: In a rotating electrical machine, the concentrated winding coil includes a single-layer coil, corresponding to one layer, wound in a first turn advancing mode with the wire forming sequential coil turns starting from one end of the insulating bobbin toward another end of the insulating bobbin and another single-layer coil, corresponding to one layer, wound in a second turn advancing mode with the wire forming turns starting from the other end of the insulating bobbin toward the one end of the insulating bobbin, with the single-layer coil and the other single-layer coil layered alternately to each other. The insulating bobbin includes a winding portion where the concentrated winding coil is formed, collars each formed at one of two ends of the winding portion and at least one projecting portion configured to disallow misalignment at a turn changeover start area in the first and second turn advancing modes.

Abstract: The disclosed invention describes a motor/generator coil produced using rectangular electric current conductors of any thickness and width. A unique joint between the up and down segments of the coil turn enables an improved conductor packing ratio and geometrical orientation that minimizes the effect of eddy currents. The resulting coil produces higher power than typical wire wound motors but is lighter weight and physically smaller in size. In addition, the coil can be free-standing, and is capable of slotless and/or ironless core device configuration.

Abstract: A stator includes: coils each made of a conductor wire wound to form in-slot wire portions and coil-end wire portions; and a split-type stator core including slots receiving the in-slot wire portions and teeth parts formed adjacent to the slots. The coils includes: a first concentrically wound coil wound with gaps between adjacent portions of the wound conductor wire to allow insertion of the conductor wire; and a second concentrically wound coil. The in-slot wire portions of the first and second concentrically wound coils are alternately arranged in each slot. A lane changing section formed on the coil end is formed to make a displacement by the thickness of one conductor used in the second concentrically wound coil.

Abstract: A method for manufacturing a stator of a rotary electric machine, the stator including cassette coils each formed of a flat rectangular conductor wire wound in a distributed winding form and a stator core including slots in which the cassette coils are inserted, includes the steps of: assembling a plurality of adjacent in-phase cassette coils to form a set of assembled coils; winding an insulation sheet cut in a predetermined shape around an outer periphery of a proximity section of the assembled coils in which the cassette coils are located close to each other; fixing end portions of the wound insulation sheet to each other; and overlapping sets of the assembled coils in a circumferential direction of the stator core, each set being bound together by the insulation sheet having the fixed end portions, and inserting the assembled coils in the slots.

Abstract: A stator includes: a stator core having a plurality of slots and teeth parts; and coils each formed by winding a flat conductor and disposed in the slots. Of the corners of the rectangular cross-section of the flat conductor, a first corner located on the inner circumference side of the coil when the flat conductor is wound to form the coil is provided with a round chamfer having a radius larger than that of another corner. When the coil is inserted into the slots of stator core elements, the rectangular cross-section of the coil is disposed such that the first corner faces toward the outer circumference side of the stator.

Abstract: A permanent magnet motor, generator or the like that is constructed with a layer form wound winding for easy manufacturing of robust machines

Abstract: The invention relates to an end turn arrangement in a stator of a dynamoelectric machine. In order to reduce, in a simple fashion, the volume required for the end turns of the form-wound coils, the stator is formed of segments (1) that have a substantially circular arc-shaped cross-section and can be combined into a stator by adding one or more other segments (1) having the same design. Each segment (1) has recesses (6, 7), within which at least one first form-wound coil (3), which is bent outward in the radial direction of the stator in the region of the end turns, and at least one second form-wound coil (4), which is bent inward in the radial direction of the stator in the region of the end turns, are arranged in the form of a tiered winding.

Abstract: An armature for an electric motor, the armature comprising a plurality of teeth and a plurality of cavities, wherein each one of the cavities is arranged between two of the plurality of teeth, and wherein at least one of the plurality of cavities is configured and arranged for receiving coil windings adjacent to a wall portion of the at least one cavity, wherein the at least one of the plurality of cavities comprises a switching wire receptor.

Abstract: A motor stator includes an insulating frame having a plurality of projecting rods, an induction unit, and a plurality of conductive members. The induction unit includes an induction circuit board, a plurality of induction coils embedded within the induction circuit board, and a plurality of coil windings wound respectively on the projecting rods. The conductive members extend through the insulating frame and the induction circuit board for establishing an electrical connection between each of the induction coils and a corresponding one of the coil windings. The turn numbers of the coil windings are not limited by the area and thickness of the induction circuit board, and can be increased. Alternatively, the coil windings may be positioned to increase the magnetic pole slot number when energized. As such, a driving force of the motor stator can be increased.