Abstract: In an aspect of the motor of the present invention, the motor includes a shaft centered on a center axis extending in a predetermined direction, and a stator located radially outside of the shaft. The stator has a coil wound around the stator. The motor further includes a housing member having a substantially cylindrical shape with a bottom, where the housing member accommodates substantially the entire stator, and supports the shaft, a cooling medium with which the housing member is filled, where the stator and the coil is immersed in the cooling medium, and a rotor that rotates radially outside of the housing member with the center axis of the shaft as a rotation center.

Abstract: Provided is an electric motor including a permanent magnet rotor and two sets of multi-phase windings serving as coil windings of a stator. The coil windings are wound around teeth by concentrated winding. The multi-phase windings of one of the two sets are wound around every other tooth by skipping one tooth in between. The multi-phase windings of another of the two sets are wound around the teeth skipped by the multi-phase windings of the one set. Adjacent coil windings of the two sets are wound in the same direction. A control unit configured to supply power to the coil windings includes control circuits independent of each other to provide one control circuit for each of the two sets of coil windings, and the control unit controls the control circuits with two sets of control signals having a phase difference of 150 degrees.

Abstract: Apparatuses and method for manufacturing coil members (230, 250) for insertion in slots of a core of an electric dynamo machine, wherein the coil members (230, 250) are formed by bending portions of an electric conductor (10). Portions of conductor of a predetermined length are fed through an aperture (80), where at least one engagement member (51) can move to engage and bend the conductor (10) so as to form the configuration of the coil member (230, 250).

Abstract: A winding arrangement in a machine component for a rotary electrical machine (1), comprising: a plurality of slots (11); a winding (7) which is wound with a winding conductor (8) and has a plurality of coils (12) which each run through two of the slots (11), wherein coil sides, which are accommodated in the slots (11), of at least one last-wound coil (16) are exposed toward corresponding slot openings of the slots (11); and at least one fixing winding (17, 20a, 20b) which is formed by a section of the winding conductor (8) and has at least one fixing turn which runs transversely across a coil head (14) of the at least one last-wound coil (16) of the winding (7).

Abstract: A wedge for use in an electric machine has a central leg and arms extending in both circumferential directions. The wedge has a radially outer full surface defining a cylindrical aperture through an axial length, and ledge surfaces at each axial end of the full surface. A curved merging portion on an outer surface of the arms merges into a curved contact surface. A rotor, a machine and a method are also disclosed.

Abstract: An armature includes an armature core, teeth, a commutator, concentrated winding wires, and distributed winding wires. Each of the teeth includes a first branch portion and a second branch portion. Each of segments in the commutator has a riser. A start end and a terminal end of the concentrated winding wire are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator. The conductor between the concentrated winding wires is hooked by the riser by which the conductor between the other concentrated winding wires is not hooked. A start end and a terminal end of the distributed winding wire are pulled out separately in a direction getting closer to the commutator and in a direction away from the commutator. The conductor between the distributed winding wires is hooked by the riser by which at least one of the conductor between the concentrated winding wires and the conductor between the other distributed winding wires is not hooked.

Abstract: The present invention relates to a resolver having a stator for detecting the rotational position of a rotor rotating at the inner center thereof. The stator includes: a stator core having a cylindrical shape; a plurality of excitation windings attached to the inner surface of the stator core at a predetermined distance in the circumferential direction, each of the plurality of excitation windings being tightly wound; a plurality of sine output windings stacked and attached to the patterns of the excitation windings in the circumferential direction, each of the plurality of sine output windings being loosely wound; and a plurality of cosine output windings stacked and attached to the patterns of the excitation windings in the circumferential direction, the sine output windings and the cosine output windings being alternately attached such that the sine output windings and the cosine output windings have the same winding distribution.

Abstract: A method provides a radial drop winding for an open wound transformer. A plurality of non-electrically conductive posts are arranged to define an interior space. Each post is of generally L-shape having a main body and a leg extending from a bottom end of the main body. During an open winding process, conductive wire is dropped to build up lengthwise along the posts to define at least one generally cylindrical winding segment supported by the legs of the posts.

Abstract: A method provides a medium voltage radial drop winding for an open wound transformers. The method arranges a plurality of non-electrically conductive supports to extend outwardly from a periphery of an imaginary geometric shape so as to define an interior space. Each support includes a pair of opposing legs disposed in spaced relation and a bottom leg coupling the opposing legs to define at least one elongated slot between the opposing legs. Each slot has an open end. Conductive wire is dropped into the open end of each of the slots to substantially fill the slots and define at least one generally cylindrical winding segment carried by the supports.

Abstract: A transformer includes a magnetic core, a first winding assembly, and a second winding assembly. The magnetic core includes a plurality of legs, including a first winding leg. The first winding assembly includes a first conductive conduit helically wound around the first winding leg a first number of turns. The first winding assembly has a first magnetic length. The second winding assembly includes a second conductive conduit wound around one of the plurality of legs a second number of turns. The second winding assembly is inductively coupled to the first winding assembly, and has a second magnetic length substantially equal to said first magnetic length.

Abstract: A winding wire (14) includes a first coil (15) formed by being wound N/2+? times between two predetermined slots (13) present in positions which are point-symmetrical with respect to a rotating shaft, and a second coil (16) formed by being wound N/2?? times between the two predetermined slots (13) which are the same as those between which the first coil (15) is formed, when a predetermined number of turns of the winding wire (14) between the predetermined slots is N.

Abstract: A method for terminating and winding coils of a core (20) of a dynamo electric machine. The coils being formed from at least an electric wire (W) and the core (20) having a longitudinal axis (20?). The coils (19) are wound by relatively moving a wire dispenser (21) with respect to a core with relative motions of translation and rotation; at least a stretch of wire extends from the coil and the stretch of wire is provided with a portion (W4) for a termination connection to a termination structure (22) of the core (20) such as a tang. The method avoids waste cut wire in the apparatus. The core is provided with a groove (120) at an end to receive at least a wire in the path of the wire for the termination of the coils. The apparatus comprises a wire deflector positioned adjacent the end of the core, where the groove (120) is located, in order to intercept and align the wire with the groove (120).

Abstract: The present invention provides a stator core winding method for a motor and a structure thereof. The method includes preparing a stator core including a plurality of core cavities; winding a pair of second-phase coils into the plurality of core cavities of the stator core; winding a pair of first-phase coils, a pair of the second-phase coils and two pairs of third-phase coils into the plurality of core cavities of the stator core; and winding two pairs of the first-phase coils, a pair of the second-phase coils and a pair of the third-phase coils into the plurality of core cavities of the stator core.

Abstract: A method is disclosed for manufacturing the winding coil of an electrical machine from flat wire. The coil can include coil sides fitted to a groove of an electrical machine and end sections which are left outside the groove and form a coil end. Flat wire can be used for winding a spool in which the coil rounds are in the same winding plane and in which there are two parallel straight coil sides on opposite sides. After this, the parallel straight coil sides can be bent towards each other essentially to the right angle in comparison to the winding plane.

Abstract: A centrifuge rotor includes a rotor body having first and second axial ends and a circumferential sidewall extending therebetween. The rotor body has a plurality of wells for receiving sample containers to be processed in the rotor. The rotor further includes an elongate reinforcement extending around the circumferential sidewall of the rotor body along a helical path. At least two portions of the elongate reinforcement interlock at one or more specific points on the surface of the rotor.

Abstract: A winding device for producing a field coil including a double-layer multiple-circuit winding for an electric motor includes a drive. The drive is configured to operate upon a winding mandrel with multiple lamellas arranged to be swung radially outwardly and inwardly by the drive in order to produce the double-layer multiple-circuit winding as a plurality of winding stacks that are arranged in separate slots and electrically connected in series, in parallel or both. At least two axially-separated winding stacks can be produced at the same time by the drive.

Abstract: A balanced armature motor assembly has a circuit board mounted to a bobbin. A first end of a wire coil is secured to a first terminal on the circuit board and passes through a first cutout of the bobbin. A second end of the wire coil is secured to a second terminal on the circuit board and passes through a second cutout of the bobbin. The first end of the wire coil is oriented along a first line tangent to a center post of the bobbin, and the second end of the wire coil is oriented along a second line tangent to the center post of the bobbin. In another embodiment, a compressed polymer material is interposed between a first magnet and a post located on the bobbin and between a second magnet and the post on the bobbin. The polymer material forces the first and second magnets into contact with the pole piece such that the magnets can be welded to the pole piece.

Abstract: A stator is provided with a core and a winding. The core includes a plurality of slots and a plurality of teeth formed between the slots. The winding is composed of a plurality of wires W bundled in an irregular arrangement. The winding includes a plurality of coil portions wound on each of the teeth, and a connecting portion connecting the coil portions together. The winding has a twisted shape in the connecting portion.

Abstract: Stator designs have wide-mouth slots between adjacent poles. Wire coils with high slot fill conductivity are formed around the poles. In some designs, the wire coils are wave wound around the poles. Thick bar conductors can be used for making the wire coils. The wire coils may be inserted using nozzle dispensers or transferred from a pre-form mandrel. In other designs, the wire coils are pre-formed on transferable pockets that are then mounted on the poles. Optional pole extensions or shoes can be attached to the stator poles after the wire coils are formed around the poles.

Abstract: The invention relates to an apparatus and method for constructing a flywheel for energy storage, the flywheel having a drive transfer element (60) and a rim comprising a mass element (10), the drive transfer element being coupled to the rim by a winding (80) around each.

Abstract: A method of winding a flexible core includes forming a flexible core member having a first end portion, a second end portion and a plurality of teeth each having a central axis with the plurality of teeth being arranged in a substantially linear array. The method also includes manipulating the flexible core member into an inverted core form having an outer portion and an inner portion with the plurality of teeth extending out from the outer portion away from the inner portion, positioning a winding member including an amount of wire adjacent one of the plurality of teeth, and rotating the flexible core member about the central axis of the one of the plurality of teeth. The method further includes applying wraps of the wire to the one of the plurality of teeth.

Abstract: Disclosed herein is a jig for assembling a rotor. The jig includes an upper jig part, a lower jig part, a support plate, a guide jig part, and a spring. The upper jig part has a pressure protrusion for press-fitting a rotating shaft, and applies pressing force to the rotating shaft. The lower jig part supports a rotor casing in a direction which is opposite the acting direction of the pressing force. The support plate is mounted to the lower jig part, and supports the rotor casing in a direction which is opposite that of the force for press-fitting the rotating shaft. The guide jig part supports the rotor casing in a direction which is opposite that of reaction force generated in the rotor casing by the support plate. The spring elastically biases the guide jig part towards the rotor casing.

Abstract: An apparatus produces a stator in which grooves are provided at the inner or outer periphery in mutually spaced relationship to receive a stator winding. The stator thus produced may be used in a ring generator for a wind power installation. In order to provide a stator having a winding, in which the susceptibility to trouble as a consequence of the high loading on the generator is substantially reduced, the stator winding is wound without interruption continuously throughout.

Abstract: A coil of a winding is wound around teeth of an armature core for a predetermined number of times in a motor. A start lead of the winding connects between the coil and a corresponding start segment among a plurality of segments of a commutator. A finish lead of the winding connects between the coil and a corresponding finish segment among the plurality of segments. The finish segment is located adjacent to a diametrically opposed one of the plurality of segments, which is circumferentially displaced by about 180 degrees from the start segment and is thereby diametrically opposed to the start segment.

Abstract: A polygonal coil having a substantially square shape is manufactured by winding a conductive wire in the diameter direction of the core on the core in an overlapping manner by the use of a winding jig in which a first collar portion and a second collar portion are disposed at both ends of a core so as to be opposed to each other and four rod-shaped protrusions are disposed on a surface of the first collar portion opposed to the second collar portion so as to protrude in a radial shape centered on an end of the core. As a result, it is possible to obtain a polygonal coil with high precision.

Abstract: A stator manufacturing device including a winding unit for forming a winding coil made up of a plurality of unipolar coils formed by winding wire, an insertion unit for receiving the winding coil from the winding unit and inserting the winding coil into a stator core, a shaping unit for shaping an outline of the winding coil that has been inserted into the stator core, and a transfer unit that is movable towards the insertion unit and the shaping unit, such that, in a state of holding the stator core, the transfer unit, by relatively moving to the insertion unit, moves the winding coil into a position for insertion into the stator core, and, by moving relative to the shaping unit, forms an outline of the winding coil.

Abstract: Apparatus and methods for forming wire coil leads that depart from wire coils inserted into a dynamo-electric machine component are provided. A plurality of wire coils may be received on an insertion tool. A wire lead may be anchored at a location on the insertion tool. A wire coil corresponding to the wire lead may encircle the location in a plane of the insertion tool. In accordance with the present invention, none of the plurality of wire coils may surmount a first portion of the wire lead anchored at the location. In some embodiments, a template for winding the wire coils may be provided that has a seat portion on the underside of the template. The seat portion may receive a wire lead such that the lead is aligned with the anchoring location on the insertion tool.

Abstract: A method and apparatus for winding multi-pole stators formed by a sheets stack ferromagnetic core, having a plurality of radially extending poles defining grooves between them. Said wireis wound about said pole extensions, spooled by a flier, and guided by shrouds, which move radially with respect to said stator overlapping the respective pole extension. The shroud) is equipped with a housing suitable for receiving said hook, so that said shroud) makes a guide for said wire on said hook. Said flier is rotated about its own axis in order to deposit said wire onto said hook. Then said shroud is withdrawn up to disengaging said hook from said housing. In case said wire must form a loop or “alpha” about said hook, after withdrawal of said shroud, said hook is shielded by means of a shield in order to force said wire in a chosen position and to slide on said shield during a backwards movement of said flier.

Abstract: A rotor assembly for a dynamo electric machine, the rotor assembly comprising a rotor core incorporating radially extending rotor poles, rotor windings encircling respective rotor poles, circumferentially extending pole tips at the outer end of each pole respectively, said tips overlying the rotor winding encircling the respective pole, a plurality of rotor slot closure members, each closure member spanning the gap between a pair of adjacent poles, and including lateral flanges interposed between the respective rotor windings and the associated pole tips, a spacer member positioned beneath each closure member and engaging the radially extending faces of the adjacent windings, and, a locking wedge assembly comprising a pair of locking wedges extending axially of the rotor assembly between each closure member and the associated spacer, the locking wedges extending with their tapers in opposite directions so that moving the wedges longitudinally towards one another increases the radial dimension of the combinati

Abstract: Non-random windings are employed to reduce the proximity effect in electrical machines, including rotating machines such as various types of motors. Thus, with respect to electrical machinery of the type wherein multi-strand electrical wiring is received within a slot relative to a surface associated with the transmission of magnetic flux, a method of dressing the wiring within the slot according to the invention includes the step of winding the strands of each turn in one or more layers, each layer being substantially parallel to the surface associated with the transmission of magnetic flux. The winding may be a multi layer winding, in which case the windings associated with each layer are preferably separated by an insulating layer. The invention is applicable to various types of machines and motors, including AC, brushless DC and variable reluctance (VR) types. The conductors may be of a circular cross section or other geometry, such as flattened tapes.

Abstract: Disclosed are a winding method and structure for stator coils in which each stator coil is wound in series around a plurality of ones of coil bobbins fitted onto each stator tooth, whereby the number of coil end portions coming out from the stator coils is reduced, thereby achieving an improvement in terms of operational efficiency and reliability. In the winding method and structure for the stator coils, each stator coil is wound continuously and in series around a plurality of ones of the coil bobbins to form a series winding stator coil body, with a pair of coil ending portions coming from the ends of the series winding stator coil body.

Abstract: A wire winding apparatus includes a wire nozzle unit, which is rotatable about a rotational axis of the wire nozzle unit, which is generally perpendicular to the axis of an armature core. The wire nozzle unit includes a plurality of wire nozzles, each of which receives and guides a corresponding one of the wires along each of two slots, which are arranged on opposite sides, respectively, of each of a plurality of salient poles of the armature core, to wind the wires around each salient pole. The wire winding apparatus further includes a nozzle rotating device, which rotates the wire nozzle unit about the rotational axis of the wire nozzle unit. The rotating device rotates the wire nozzle unit 180 degrees when the wire nozzle unit is moved from one of the two slots to the other of the two slots.

Abstract: Disclosed are a winding method and structure for stator coils in which each stator coil is wound in series around a plurality of ones of coil bobbins fitted onto each stator tooth, whereby the number of coil end portions coming out from the stator coils is reduced, thereby achieving an improvement in terms of operational efficiency and reliability. In the winding method and structure for the stator coils, each stator coil is wound continuously and in series around a plurality of ones of the coil bobbins to form a series winding stator coil body, with a pair of coil ending portions coming from the ends of the series winding stator coil body.

Abstract: A method and apparatus for winding and placing windings on the magnetic core of a motor without transferring the windings prior to insertion. The method and apparatus include using a single coil winding/injection device having a plurality of gap defining elongate blades arranged in a circular array for use in winding coils and then insertion into a stator core.

Abstract: Methods and apparatus are presented that improve the efficiency of stator production by connecting stator coil leads to final attachment devices before the coils are inserted into a stator core. After coil insertion, the final attachment devices are merely mounted to the stator receiving the stator core, eliminating most if not all post-coil-insertion lead identification and manipulation processes. The final attachment devices can be terminal receivers that include a plurality of wire sockets for receiving a plurality of coil leads. Coil leads are connected to final attachment devices during the coil winding stage. Such connections add little or no additional time to the winding stage.

Abstract: A method and apparatus for winding and placing windings on the magnetic core of a motor without transferring the windings prior to insertion. The method and apparatus include using a single coil winding/injection device having a plurality of gap defining elongate blades arranged in a circular array for use in winding coils and then insertion into a stator core.

Abstract: A wire winding apparatus includes a wire nozzle unit, which is rotatable about a rotational axis of the wire nozzle unit, which is generally perpendicular to the axis of an armature core. The wire nozzle unit includes a plurality of wire nozzles, each of which receives and guides a corresponding one of the wires along each of two slots, which are arranged on opposite sides, respectively, of each of a plurality of salient poles of the armature core, to wind the wires around each salient pole. The wire winding apparatus further includes a nozzle rotating device, which rotates the wire nozzle unit about the rotational axis of the wire nozzle unit. The rotating device rotates the wire nozzle unit 180 degrees when the wire nozzle unit is moved from one of the two slots to the other of the two slots.

Abstract: A motor has a rotor rotatable about an axis, a can surrounding the rotor and having an outer surface, and a plurality of outwardly projecting stator supports fixed on the outer surface, and respective stator windings mounted directly on the stator supports. The stator supports project radially of the axis and there are at least three and at most twelve such stator supports and they are angularly equispaced about the axis.

Abstract: A winding apparatus comprises a core jig having a circular outer circumference, plate-shaped stator core jigs designed to have a shape corresponding to stator cores, and holding jigs to be detachably installed to the outer circumference of the core jig for holding the stator core jigs. Accordingly, the plurality of divided stator cores can be subjected to winding quickly and easily. It is possible to perform an efficient winding operation.

Abstract: A winding wedge retention system designed to maintain coil form includes a rotor (21) having a plurality of rotor poles (24), a coil (20) wound on one of the rotor poles (24), a V-shaped support wedge (22) positioned between adjacent rotor poles (24, 24) and that is adapted to support the coil (20), and a second wedge (26) that is positioned between and adjacent to the coil (20) and the rotor pole (24) on which the coil (20) is wound. The second wedge (26), in the presence of centrifugal loads, maintains a constant shape of the coil (20) and also maintains a constant position of the coil (20) relative to a position of the support wedge (22).

Abstract: This motor includes an armature winding (12) equipped with conducting coils (A1 to A4, B1 to B4, C1 to C4) distributed into three phases and into two, lower and upper, layers. The lower coils (A1, A3, C1, C3, B2, B4) alternate with the upper coils (B1, B3, A2, A4, C2, C4). Each phase comprises a pair of diametrally opposed coils arranged in the lower layer and a pair of diametrally opposed coils arranged in the upper layer. These two pairs are linked electrically in parallel. Each coil includes two, lower (A11) and upper (A12), windings and two uninterrupted wound conductors (K1, K2) . linked electrically in parallel. Each conductor (K1, K2) forms the lower winding of a coil of a pair and the upper winding of the other coil of this pair, in such a way that these lower and upper windings are linked electrically in series.

Abstract: An improved combined winding form and lead guide mechanism assembly is provided wherein a lead guide sliding assembly is located in a cavity in the winding form.

Abstract: A multiple phase, multiple pole stator is wound using two coil winding passes per phase. The stator core is indexed in alternate directions between the winding of individual coils of one phase to the next. As a result, the coils of a particular phase are wound using a first stator index direction for the first winding pass and a second stator index direction for the second winding pass. A winding apparatus for such winding has an arbor assembly which includes a tubular shaft having an expandable mandrel at the forward end thereof which is received in the bore of a stator. The mandrel includes a fixed, radially-extending key and at least one pivotal, radially-extending key. The keys are received in slots or keyways provided in the stator bore to lock the stator to the shaft and to rotatably drive the stator during the winding process. An improved combined winding form and lead guide mechanism assembly is also illustrated wherein a lead guide sliding assembly is located in a cavity in the winding form.

Abstract: An improved conveying system in a parallel processing production line for dynamo-electric machine components having a magnetic core, the conveying system having a main conveyor extending along all of the processing machines of the production line and a load/unload device for transferring components between the main conveyor and a selected processing machine. Components to be processed are loaded directly from the main conveyor onto the load/unload device without the use of an intermediate conveyor. The load/unload device has a base platform with an alignment area at which transfer between the load/unload device and either the main conveyor or a selected processing machine occurs. Two component holders (e.g., collets) are movably mounted on the base platform for alternate positioning at the alignment area. The load/unload device alternately positions the gripping ends of the component holders adjacent the main conveyor and a selected processing machine.

Abstract: Pivotal jaws of wire clamps that temporarily grip stator coil lead wires are spring biased to clamp stator coil lead wires thereto when the lead wires are inserted into the clamps at a winding station, and are biased by respective air actuators to ensure release of the lead wires at a coil lead terminating station.

Abstract: A multiple pole, multiple phase, permanent magnet motor comprising a rotor having a plurality of permanent magnet poles, a stator having a plurality of stator slots and an equal number of stator teeth defined by adjacent stator slots, and a plurality of phase windings disposed on the stator, each phase winding including a plurality of coils having a non-uniform number of turns, such that electromagnetic poles are developed in proximity to the stator, the electromagnetic poles for each phase being distributed symmetrically about the stator, equidistant from one another, and equal in number to the number of permanent magnet rotor poles. The number of turns of each of the plurality of coils of each phase winding is selected in accordance with a predetermined sinusoidal relation.

Abstract: A tamping assembly is provided at a stator winding station that includes a tamping member and an air actuator which drives the tamping member toward and away from a temporary wire clamp. The temporary wire clamp has a movable jaw which is forced open to receive a stator coil lead wire by engagement of the tamping member therewith. Extended and retracted positions of the tamping member are determined by proximity detectors that detect the corresponding extended and retracted positions of a guide rod connected to and movable with the tamping member. Plural tamping assemblies are provided, one for each temporary wire clamp. The tamping assemblies are used in conjunction with lead pull assemblies which locate segments of stator coil lead wires in positions to be inserted into the temporary clamps when forced open by the tamping members.

Abstract: Armatures for dynamo-electric machines are balanced during manufacture by measuring the unbalance of the armature assembly prior to winding the coils on the armature. The numbers of turns of wire in at least some of the coils subsequently wound on the armature are then adjusted so that the unbalance of the resulting coils compensates for the unbalance of the armature prior to coil winding. Alternatively, one or more extra turns of wire that are short-circuited at the commutator may be added to help balance the armature. In addition, masses may be added to the armature to ensure that it is balanced dynamically as well as statically.

Abstract: A secondary winding bobbin of an ignition coil for an internal combustion engine is disclosed. The bobbin includes tubular winding core and a plurality of fins substantially perpendicular to the axis of the core. The fins defining between them annular winding compartments of which the core forms the bottom. Each fin including a passage to allow the secondary winding wire to pass, in the winding direction, from the compartment located upstream of this fin to the compartment located downstream. The core has a shape such that the passage opens into the upstream compartment at a distance (e) from the bottom of the core and into the downstream compartment level with the core.

Abstract: A method of winding an armature coil, wherein out of slots (S1-S12) of an armature core (12), slots (S5, S8) away from eccentric portions (13a, 14a) of first and second balancers (13, 14) which are disposed at opposite sides of the armature core (12) are designated as the slots in winding starting positions, respectively, and coils (16) are wound from the slots (S5, S8) into slots (S2, S11), so that the coils (16) are not brought into contact with the eccentric portions (13a, 14a).