Abstract: The invention provides a distributed winding stator using a rectangle conductor as coil, realizing a miniaturized coil end and reduced current density compared to the prior art stator, so as to obtain a miniaturized rotation electric machine with high power. The distributed winding stator is formed by wave winding a conductor source wire having a rectangular cross-section, wherein the wire is cranked so that parietal regions on both ends are displaced corresponding to the width of the source wire and that the length is within the range of intervals between adjacent slots, and inserting the wave winding coil into slots of the stator.

Abstract: A method for producing a coil winding for stators is described, in which each coil turn rests, with one fillet (14) each, in two stator slots, and the two fillets (14) are joined by a head portion (16). A plurality of coil turns are made simultaneously by winding up n parallel wires (10) with intermediate spacing onto a rotatable former (20). To obtain small winding heads, alternatingly in a work step A, one fillet (14) and the wire length of one head portion (16) are made from each of the parallel wires (10) on the former (20). Then in a work step B, the resultant fillets (14) together with the adjoining first end of the respective associated head portions (16), and the wire guide together with the second end of these head portions (16), are displaced relative to one another along the former (20) by n times the intermediate spacing of the wires (10). After work steps A and B have been repeated multiple times, the fillets (14) for the last n stator slots are then also made on the former (20).

Abstract: An armature for use in a motor has a plurality of teeth, a plurality of slots and coils of three kinds of phases. A plurality of the slots is formed between the coadjacent teeth. The coils of three phases are wound around the teeth. The armature has a coil structure, according to which radial force acting on a specific tooth is greater than radial force acting on another tooth. A peak value of the radial force acting on the specific tooth is approximated to a peak value of the radial force acting on another tooth in such a manner that a flux path in and/or adjacent to the specific tooth is made narrower than a flux path in and/or adjacent to another tooth.

Abstract: An automotive alternator including a rotor having a plurality of poles; a plurality of phases in operable communication with the plurality of poles; and a stator core in operable communication with the rotor, the stator having a number of slots defined by: S=(P×PH)+((M×PH)+N) where S=number of slots P=number of poles PH=number of phases M=a whole integer greater than or equal to 0 N=a whole integer selected from a group of integers ranging from, and including, 1 through the number of phases minus 1. A method for reducing magnetic noise in an automotive alternator includes selecting a number of poles, selecting a number of phases, selecting a number of stator core slots, the foregoing selections interacting in the automotive alternator to produce an order of frequency of a tangential force different than any multiple of the number of phases and different than an order of frequency of a radial force of the alternator.

Abstract: An electrical machine having a magnet assembly with a magnet carrier ring with an even number of permanent magnets mounted in the carrier ring around a circular locus, and a conductor assembly with one or more conductor circuits wound in a double helix wave winding around a flat conductor support ring with the conductor circuits having uniformly curved conductor segments of involute or arcuate configuration wherein the magnet assembly and conductor assembly are contained in a housing with the magnet assembly rotating relative to the conductor assembly.

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: A substrate is provided and a top interconnection metal layer and a primary winding layer are formed thereon. Then a passivation layer having a plurality of via exposed parts of the top interconnection metal layer is formed on the substrate. A secondary winding layer and at least a bonding pad are formed on the passivation layer. The bonding pad electrically connects to the top interconnection metal layer through the via.

Abstract: The present invention relates to a motor structure, including a rotor, a motor seat, a cover body and a stator structure, wherein the stator structure has a flexible base and parts such as coils, a motor induction driving device and the like are disposed on the flexible base. As such, while assembling the stator structure, the parts such as the coils, the motor induction driving device and the like and the assembling, fixing and aligning processes thereof can be neglected, thereby making the manufacture and assembly of the motor structure simpler and more convenient.

Abstract: In a motor stator, teeth radially project from an annular stator core, and a plurality of slots formed between adjacent teeth are skewed. Phase windings alternately pass through slots having different skew directions, wherein the length of bridging portions, which do not contribute to generation of torque, is short and the length of the portions which are located in the slots, and which contribute to the generation of torque, is long. Further, the phase windings are bent at an obtuse angle at opposite ends of the bridging portions.

Abstract: In one aspect, an alternator is described which includes a current control apparatus including a stator winding and a control winding, wherein current control in the control winding regulates the stator winding. In another aspect, a gas turbine engine includes a multiple-channel alternator for redundantly driving accessory systems. In another aspect, an alternator cooling scheme is provided, which alternator includes means for reducing stray inductance of stator winding end turns.

Abstract: A method and apparatus in which wave windings, cut from a continuously formed wave winding band, are brought with a defined number of waves essentially tangentially to a rotor or stator lamination packet or a rotorlike transfer tool having radially outwardly open slots. During a rotary motion of the lamination packet or transfer tool and a substantially tangential relative motion, at a speed corresponding to the circumferential speed of the rotary motion, the straight portions of the bandlike wave windings are pressed into the slots.

Abstract: A brushless motor and a related control device are disclosed in a structure wherein a stator has U-phase, V-phase and W-phase stator poles, with two of the U-phase V-phase and W-phase stator poles carry thereon respective phase windings, in the absence of a selected phase winding related to a remaining one of the U-phase V-phase and W-phase stator poles. The respective phase windings have end portions connected together at a junction point. A three-phase alternating voltage is applied to the respective phase windings and the junction point to allow the stator to have an electromagnetic action thereby drivably rotating a rotor. The stator poles may be formed in trapezoid shapes to minimize interference between associated component parts for easy assembly in high productivity and efficiency with a reduction in torque ripple.

Abstract: A polyphase sequentially joined-segment coil of a rotary electric machine and a production method thereof are provided. The coil is made up of a plurality of conductor segments joined in series. Each of the conductor segments a head projecting from a stator core, a pair of legs, and a pair of ends projecting from the stator core. The heads are of two types: a large-sized head and a small-sized head extending inside the large-sized head. This structure permits the length of the conductor segments in an axial direction of the core to be decreased and improves cooling capability of the machine and coil losses.

Abstract: The present invention provides a linear, rotary spherical motor with an integrated magnetic bearing. The motor can be a toothless permanent magnet, BLDC design composed of a permanent magnet rotor and a Zigzag stator winding containing at least two-phase windings, where each phase is constructed of at least two circuits. Other exemplary embodiments include a trapezoidal winding configuration. The individual circuits of a phase are displaced away from each other along a line that is at right angles to the direction of the alternating polarity magnet array. The circuits forming a phase share the same “slot”, and each circuit resembles a complete phase winding, however each circuit contains a proportion of the total number of turns of the phase. Controllable axial bearing force is developed through the differential balance of the currents in the circuits, while required motor torque is generated by the sum of the individual currents in a given phase.

Abstract: A stator for an electric machine includes a generally cylindrically-shaped stator core having a plurality of circumferentially spaced core slots. A stator winding includes a plurality of phases, each including at least a first filar and a second filar extending circumferentially around the stator core to form a plurality of layers. Each of the filars is a conductor having a plurality of slot segments disposed in the core slots. The slot segments are alternately connected at the first and second ends of the stator core by a plurality of end loop segments that may form a cascaded winding pattern. The plurality of filars of each phase alternating radial positions with one another within at least one end loop segment at discreet locations around the stator core such that the average radial position of the slot segments of the first filar conductors is substantially equal to that of the second filar.

Abstract: A method for manufacturing rotary electric machine that has a stator winding to provide a stator winding that has a plurality of conductors wound one over another. The conductors are wound with left and right ends. Therefore, the stator winding on the stator core has an overlapped joined portion.

Abstract: A sequentially joined segment armature coil is provided which may be employed in an ac machine such as an ac motor or motor generator. The armature coil is equipped with three phase coils each of which is made up of a first and a second phase windings identical in number of turns. This structure permits the number of turns of the armature coil to be changed easily by changing a connection of the first and second phase winding between a series connection and a parallel connection or changing a connection of the phase coils between a star connection and a delta connection. The structure also enables terminal leads of the first and second phase windings of each of the phase coils to be collected and withdrawn outside the ac machine, thus facilitating ease of arrangement of the terminal leads.

Abstract: An X-phase winding phase portion, a Y-phase winding phase portion, and a Z-phase winding phase portion constituting a three-phase stator winding are each constructed by zigzag-connecting winding phase sub-portions having a phase difference corresponding to an electrical angle of 36 degrees (36°). The rotor is a claw-pole rotor, and permanent magnets are interposed between claw-shaped magnetic poles.

Abstract: A miniaturized rotor is provided for improving the efficiency of an engine by using a bobbinless high-density armature without using a substrate which interferes with magnetic force.

Abstract: The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be used to control at least one of the output voltage and current of the first winding.

Abstract: A stator winding is provided with three distributed winding phase portions each constructed by installing a conductor wire in every third slot. Slot-housed portions of the conductor wires are formed with a rectangular cross section and coil end portions are formed with a circular cross section.

Abstract: In an automotive alternator according to the present invention, a curved portion for adjusting a height of a joining portion coil end of an inner winding portion and a height of a joining portion coil end of an outer winding portion so as to be generally equal, and adjusting a height of a linking portion coil end of the inner winding portion and a height of a linking portion coil end of the outer winding portion so as to be generally equal is disposed on conductor segments of at least the inner winding portion.

Abstract: A rotary electric machine has a stator core and a winding. The winding has a plurality or sub-winding sets which are mounted on the stator in the order. Each of the sub-winding sets has a plurality of phase windings. Each of the phase windings is made of a continuous wire. The sub-winding sets are formed into a cylindrical shape having a plurality of straight portions and turn portions before the sub-winding sets are mounted on the stator core. The turn portions are regularly arranged to avoid collisions between the turn portions. It is possible to avoid collisions since the winding is mounted on.

Abstract: A rotating electrical machine, such as an aircraft starter-generator, includes an exciter that has its stator windings divided into a number of sections. A plurality of switches are electrically coupled to the exciter stator winding sections and are configured and controlled so that the exciter stator winding sections may be selectively coupled in series or in parallel with one another, and selectively coupled to receive either DC or AC power.

Abstract: Structures of direct current motors or ac commutator (Universal) motors which use a concentrated winding on the rotor with coils wound around the teeth. The number of commutator segments is higher than the number of rotor teeth. Several coils are wound around the same tooth. The terminals of the coils are connected to different segments of the commutator. The parallel paths of the armature winding are perfectly balanced. An equal current distribution through the parallel circuits of the armature is maintained and there is no circulation current between these parallel circuits. The problems related to commutation are reduced because the value of the coil inductances is low. The copper volume of the end-windings, the Joule losses and the axial length of the motor armature are lower than a lap or a wave winding with interlocked coils. Two kinds of structures with a concentrated winding are presented: some with rotor teeth with identical dimensions and some with rotor teeth with different dimensions.

Abstract: Provided is a multi-turn sequential segment joining stator coil capable of suppressing the differences in electromotive voltage between parallel circuits and of carrying a large current. Partial coils are accommodated in a plurality of continuous conductor accommodation positions of different slots. The partial coils accommodated in the same slot are separately connected in series to each other to produce parallel coils, and the produced parallel coils are connected in parallel with each other. This configuration enables the production of a sequential segment joining stator coil type electric rotating machine with a size-reduced head-side coil end.

Abstract: A stator winding is provided with three distributed winding phase portions each constructed by installing a conductor wire in every third slot. Slot-housed portions of the conductor wires are formed with a rectangular cross section and coil end portions are formed with a circular cross section.

Abstract: A stator winding of an alternator has two poly-phase windings. Each of phase coils, e.g., X-phase coil in one of poly-phase windings, is provided by a continuous wire. The phase coil is accommodated in corresponding slots in a layered manner along a radial direction, therefore, the phase coil forms layers in the slots and may be identified as location of layers in the slots. The phase coil has a plurality of crossing portion that links the layers in different slots distanced by a magnetic pole pitch, and two output portions extending beyond the stator winding. In the phase coil, only one crossing portion is formed to link the same layers in different slots, and the other crossing portions are formed to link different layers in different slots.

Abstract: The present invention provides a dynamo-electric machine that prevents the lead portions of the coil portions disposed at places, at which mechanical balance is provided, from intersecting each other, that enhances the workability in manufacturing the wiring by wiring a conductor, and that suppresses the defective insulation of the winding. This dynamo-electric machine for use in an electric power steering system has a yoke, n (incidentally, “n” is a common divisor of the number of the magnetic poles and the number of the slots and equal to or more than 2) of the coil portions are parallel-connected between the segments. Moreover, the coil portions are disposed in such a manner as to be symmetrical with respect to a mechanical angle of 360 degrees. Lead parts of the coil portions other than one of the coil portions, which is nearest in a circumferential direction to each of the segments, are drawn therefrom in the same circumferential direction.

Abstract: Winding assemblies of electrical machines, such as electric motors, are provided which include a connector scheme having at least one conduit that is electrically coupled via a wave soldered connection directly to at least two windings which are not axially adjacent. The conduit can include a common connector and/or a phase connector. The connector scheme can additionally or alternatively include a power connector that is electrically coupled via wave soldering directly to a single winding, and adapted to be electrically coupled to a power source. The winding assemblies of the invention can additionally provide a number of constructions which allow for minimally sized air gaps.

Abstract: A rotating-electric machine for use in engine starter capable of improving power by reducing inductance of coil is provided. An armature 7 is provided inside a stator, and when an armature winding 2 is inserted into a slot 4 provided in the armature 7, the armature winding 2 is formed into a wave winding and a short-pitch winding. In case that number of poles 2p=6 and number of slots Ns=23, the armature winding 2 are inserted into 1st to 4th slots, and a back pitch yb is established to be 3, whereby a short-pitch degree &dgr;(=|Ns/2p−yb|) is 0.83 and an expression of 0.5<&dgr;<1 is satisfied.

Abstract: A multiple phase winding for an electromotive device comprised of individual phase windings. Each phase winding includes multiple layers of conductors and defines working length portions and interior and exterior end-turn portions, wherein at least one set of end-turn portions defines notches which cut across the height dimension of all the layers of conductors. The notches of different phases intermesh. This geometry promotes low electrical resistance within the phase windings and good conductive heat transfer between the multiple phase winding and the housing of the electromotive device, allowing higher power density from the device.

Abstract: A rotary electric machine has a stator winding. The stator winding has a plurality of conductors wound one over another. The conductors are wound with left and right ends. Therefore, the stator winding on the stator core has an overlapped joined portion. This arrangement allows a high ratio of the conductors in the slot and is easy to manufacture.

Abstract: In a stator for a dynamo-electric machine, a winding includes a conductor having a rectangular cross-sectional shape in a direction perpendicular to an axial direction, an overall shape of the conductor being a crank shape when flattened out, and the conductor includes straight portions laminated within slots, and bridge portions connecting the straight portions to each other, the bridge portions protruding from both end surfaces of the stator core in the axial direction.

Abstract: A stator winding is formed by inserting two conductor segments each from a first end surface of a stator core into a pair of slots separated by six slots and joining together end portions of the conductor segments extending outward from a second end surface of the stator core, slot-housed portions of the conductor segments being formed with a rectangular cross section and linking portions constituting coil ends being formed with a circular cross section.

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: A rotating-electric machine for use in engine starter capable of improving power by reducing inductance of coil is provided. An armature 7 is provided inside a stator, and when an armature winding 2 is inserted into a slot 4 provided in the armature 7, the armature winding 2 is formed into a wave winding and a short-pitch winding. In case that number of poles 2p=6 and number of slots Ns=23, the armature winding 2 are inserted into 1st to 4th slots, and a back pitch yb is established to be 3, whereby a short-pitch degree &dgr;(=|Ns/2p−yb|) is 0.83 and an expression of 0.5<&dgr;<1 is satisfied.

Abstract: A stator includes a cylindrical stator core and a stator winding composed of a three-phase stator winding portion constructed by connecting three winding phase portions into a three-phase star connection, a neutral point of the stator winding being electrically connected to a rectifier for rectifying alternating-current output, wherein each of strands of wire constituting the three winding phase portions is led out from a coil end group of the stator winding to an outer side to constitute a neutral-point terminal, each of the neutral-point terminals has a flat side surface portion, and a neutral-point joint portion of aid stator winding is constructed by abutting and electrically joining the flat side portions of the neutral-point terminals.

Abstract: A direct current brushless motor includes a base having a receiving chamber whose one end is combined with a cover plate. The other end of the receiving chamber and the cover plate each have a shaft hole, for pivoting the rotation shaft of the rotor. A film printed circuit is mounted on the periphery of the base. The film printed circuit has at least two coil sets, a set of Hall sensing drive member, and a connecting end for connection with a power supply. The coil sets are oppositely distributed on the periphery of the base in an equally angular manner with the receiving chamber serving as a center. After the coil sets are energized, the multiple coil sets and the permanent magnet ring of the rotor may produce mutually repulsive forces, so that the rotor may be driven to rotate successively.

Abstract: An induction coil suitable for use either as a rotor or a stator in electromotive devices such as an electric motor, an alternator or a generator. The induction coil is made by stamping, etching or machining slots in plural metallic sheets. The metal between the slots on each slotted sheet constitute a plurality of substantially parallel electrical conductors. In a preferred embodiment of the induction coil, the individual slotted sheets are stacked to include two or more sheets, with the conductors of the top sheet substantially filling the slots in the bottom sheet, then rolled into a first cylindrical member. The process is repeated with a second stack of slotted sheets to form a second cylindrical member having a different diameter than the first cylindrical member. The first and second cylindrical members are coaxially assembled in axial alignment to form an assembled cylindrical member.

Abstract: A stator winding includes a plurality of first to sixth winding sub-portions each having one turn. First series-connected windings are formed with the first, third, and fifth winding sub-portions connected in series. Second series-connected windings are formed with the second, fourth, and sixth winding sub-portions connected in series. Each of Winding phase groups for each phase is formed with the first and second series-connected windings connected in parallel.

Abstract: Six single phase winding portions are installed in slots disposed at a ratio of two per phase per pole. Each single-phase winding portion has two wave windings formed by winding a conductor wire for a predetermined number of winds into a wave-shaped pattern composed of slot-housed portions disposed at a pitch of six slots in a circumferential direction and crossover portions linking together end portions of adjacent pairs of the slot-housed portions alternately relative to an axial direction, the wave windings being offset by six slots from each other circumferentially and installed in the slots such that the crossover portions face each other axially.

Abstract: An alternator includes a stator winding in which a plurality of lead wires extending from winding phase groups for each phase are connected in an alternating connection via a terminal assembly for three-phase connection, and the terminal assembly for three-phase connection is disposed at a side of a rotor to which a fan unit is fixed and opposite to the rotor with respect to an end face of the fan unit in the axial direction of the rotor, the terminal assembly opposing the top of a coil-end group of the stator winding.

Abstract: An alternator includes a stator winding in which a plurality of lead wires extending from winding phase groups for each phase are connected in an alternating connection via a terminal assembly for three-phase connection, and the terminal assembly for three-phase connection is disposed at a side of a rotor to which a fan unit is fixed and opposite to the rotor with respect to an end face of the fan unit in the axial direction of the rotor, the terminal assembly opposing the top of a coil-end group of the stator winding.

Abstract: A rotary electric machine of the present invention includes a yoke, a multi-polar magnetic field portion composed of 4 poles fixed to the inner wall of the yoke, a shaft disposed within the yoke so as to be able to rotate freely, an armature fixed to the shaft having a winding composed of a conductor wire wound by double wave winding into an even number of slots formed on the outer circumferential surface of a core so as to extend in the axial direction thereof, a commutator comprising a plurality of segments fixed to an end portion of the shaft, and a plurality of brushes contacting the surface of the commutator. With this arrangement, there can be obtained a rotary electric machine capable of reducing operation noise.

Abstract: The present invention relates to an ejection rotation power mechanism which includes (a) an externally covered ring mechanism, (b) an eccentric supporting rod mechanism, and (c) a power rotation wheel mechanism, whereby the ejection rotation power mechanism can convert into rotating force and provides stable and high efficient output.

Abstract: Six single phase winding portions are installed in slots disposed at a ratio of two per phase per pole. Each single-phase winding portion has two wave windings formed by winding a conductor wire for a predetermined number of winds into a wave-shaped pattern composed of slot-housed portions disposed at a pitch of six slots in a circumferential direction and crossover portions linking together end portions of adjacent pairs of the slot-housed portions alternately relative to an axial direction, the wave windings being offset by six slots from each other circumferentially and installed in the slots such that the crossover portions face each other axially.

Abstract: A process for production of a winding for the magnetic circuit of a rotating electrical machine in which the conductors are placed in slots of the magnetic circuit in two slot planes. The process includes producing the two planes of conductors successively and independently, each plane of conductors having at least one layer of conductors.

Abstract: A stator of a dynamo-electric machine includes: a cylindrical stator iron core formed with a number of slots opening to the inner periphery side at a predetermined pitch in a circumferential direction; and an armature coil having windings of first, second and third phases which are wound in a wave winding manner into every third slot by offsetting the slots, into which the respective windings of the first, second and third phases are inserted, one slot, wherein the windings of the first, second and third phases constitute coil ends in which they protrude from a first slot to an end face of the stator iron core outside the slots, extend along the end face of the stator iron core in the circumferential direction while maintaining the radial position, and then enter into a second slot three slots away from the first slot, and wherein the coil ends are arranged in the circumferential direction in the form of two layers arranged radially on the end faces of the stator iron core to constitute coil end groups.

Abstract: A rotary electric machine has a stator winding. The stator winding has a plurality of conductors wound one over another. The conductors are wound with left and right ends. Therefore, the stator winding on the stator core has an overlapped joined portion. This arrangement allows a high ratio of the conductors in the slot and is easy to manufacture.