Abstract: The motors/generators of the preferred embodiments include a rotating part (rotor) and a stationary part (stator). In the devices disclosed, the primary function of the stator is to provide a high strength background magnetic field in which the rotor rotates. The rotor can be powered with a current that changes direction in concert with the relative change in magnetic field direction of the background field (that is, as the rotor moves from one magnetic pole to the next) in the case of a motor. In the case of a generator, the movement of the rotor generally results in the generation of an alternating voltage and current.

Abstract: A stator includes a core having inwardly extending teeth, an insulator placed on an end surface of the core, coil windings wound the teeth, outgoing lines extending from both ends of the coil windings, and a yarn securing the outgoing lines to the insulator. The insulator has an outer wall surrounding a central axis and erected to upwardly extend from the end surface, a plurality of teeth cover portions radially inwardly extending from the outer wall, a plurality of inner walls erected at an end portions of the teeth cover portions, and at least one projection portion. The coil windings are placed between the outer wall and corresponding inner walls. At least one passage portion is formed in the outer wall to pass the yarn. The projection portion spaces the outgoing lines from the coil windings and secures the outgoing lines, and radially inwardly extends from the outer wall.

Abstract: In one example, an electrostatic spray gun includes a spray tip assembly, an alternator, an electrode, and at least one controller. The alternator includes a stator having an inner diameter and an outer diameter. The alternator further includes a rotor disposed within the inner diameter of the stator and configured to rotate within the stator to cause the alternator to generate alternating electrical current. The electrode, positioned proximate the spray tip assembly, is coupled to receive electrical energy from the alternator. The at least one controller is coupled to the alternator and is configured to output a representation of a rotational speed of the rotor.

Abstract: An impeller of a fan comprises a hub, a plurality of blades, a permeable shell and a permanent magnet. The hub includes a top portion and a side wall, and the inside of the top portion adjacent to the side wall includes a plurality of first balance rooms. The blades are disposed around the hub. The permeable shell is disposed within the hub. The permanent magnet is disposed within the permeable shell, and at least a portion of the first balance room is defined between the top portion and the permanent magnet. A fan is also disclosed.

Abstract: Disclosed is an insulator of a motor, including a first side wall portion and a second side wall portion in which a coil is wound on outsides thereof, and which are disposed to face each other, to form an accommodation space at insides thereof, and also to form an entrance portion through which a stator is inserted; a connecting portion integrally formed with the first side wall portion and the second side wall portion; and a clip portion formed to protrude from at least one of an end of the first side wall portion and an end of the second side wall portion, and disposed at the entrance portion. Therefore, assemblability of the insulator with the stator can be ensured, and a manufacturing cost and a manufacturing time can be reduced.

Abstract: A cooling structure of an electric motor comprising a rotor, a stator provided with a wound stator coil, and a housing accommodating the rotor and the stator, wherein a coil end of the stator is spaced apart from an inner wall of the housing. The cooling structure comprises a thermally-conductive member which is provided to thermally connect the housing and the coil end and includes a laminated graphite sheet, and an airbag which is configured to be deployed in a space portion between the inner wall of the housing and the coil end so as to press at least a portion of the thermally-conductive member against the coil end by means of a pressure of pressurized air therein.

Abstract: The present invention relates to an electric machine, in particular a brushless permanent magnet motor, comprising a stator which comprises a plurality of teeth having at least one needle-wound winding strand, the at least one winding strand having at least two windings on adjacent teeth which are arranged in series, the at least two windings each comprising at least one winding layer, a needle channel being provided which is formed between the at least two windings by a crossing portion of the at least two windings and is filled at least in part. The present invention further relates to a method for winding a coil of an electric machine.

Abstract: A joint structure includes a joint hollow body having a first plate and a second plate arranged opposite to each other, and the second plate has a penetrating hole for defining an axial direction with respect to the penetrating hole, and an external side plate is extended in the defined axial direction from the external periphery of the first plate and connected to the external periphery of the second plate, so as to enhance the structural strength of the joint hollow body and prevent the joint hollow body from having concentrated stress or being cracked easily.

Abstract: An electric power steering assembly includes a motor which includes a brush assembly. The brush assembly includes a brush base, a plurality of brush units and a plurality of fixing units for fixing the brush units to the brush base. The brush unit includes a brush, a guide rail and a spring. The rail includes two guiding arms, a closed end interconnecting the guiding arms and wings extending from free ends of the guiding arms. Grooves in the brush receive the guiding arms. The fixing unit includes a first fixture and a second fixture. The closed end of the guide rail engages the first fixture. The second fixture includes two columns spaced from each other. Each column defines a slot in a top end. Protrusions extend from a side of each slot to lock the wings in the slots.

Abstract: In order to improve a cooling system, in particular for in-transit cooling, comprising a refrigeration circuit, in which a refrigerant compressor, a high-side heat exchanger, an expansion unit and a low-side heat exchanger are disposed, an electric compressor motor for driving the refrigerant compressor and a control unit for controlling a refrigerating output of the refrigeration circuit, in such a way that it operates as far as possible in an energy-saving manner, it is proposed that the cooling system has a generator for feeding electric power into an internal electrical supply system of the cooling system, from which the compressor motor is fed, and in that an internal combustion engine is provided for driving the generator.

Abstract: A motor for a surgical instrument includes a rotor and a stator. The rotor includes a shaft and a magnet. The stator includes (i) a cavity in which the rotor is disposed, and (ii) a coil assembly. The coil assembly includes multiple phase sets. The phase sets include multiple sets of wires. Each of the phase sets includes multiple coils and corresponds to a respective one of the sets of wires. The coils in each of the phase sets are at respective positions about the rotor. One of the sets of wires includes at least three wires. The stator causes the rotor to axially rotate a surgical tool of the surgical instrument based on current received at the sets of wires.

Abstract: A flat wire (36) that forms a stator coil (16) has an insertion portion (22) that is inserted into a slot (14), and a coil end portion (30) that protrudes from an end portion of the stator coil (16). An insulating layer of an adjacent portion (38) that is adjacent to a flat wire (36) of a different phase at the coil end portion (30) is thicker than an insulating layer in another region. Setting the thickness of the insulating layer of each part according to the required insulation performance in this way makes it possible to make the overall insulating layer thinner, and improve the in-slot space factor of the stator coil while ensuring insulation performance.

Abstract: A power tool with a combined printed circuit board (PCB) that reduces internal wiring of the power tool and provides a large amount of air flow to internal components. In some instances, the combined PCB has a surfboard shape and includes a motor control unit and power switching elements (Field Effect Transistors or FETs). The combined surfboard PCB is located above the trigger, but below the motor and drive mechanism. In other instances, the combined PCB has a doughnut shape and is located coaxially with a motor shaft. The combined PCB may be positioned between a doughnut-shaped control PCB and the motor.

Abstract: A conveyance system includes a car; a machine for imparting motion to the car, the machine including a stator and a rotor, the stator including 12*k stator teeth, the rotor including 11*k rotor poles, wherein k is a natural even number, the machine including windings located at the stator teeth, the windings arranged in 6 phases; and a drive unit for providing drive signals to the machine, the drive unit including a plurality of drives, the number of drives being an integer multiple of 2.

Abstract: A compressor includes a hermetic container, a compression mechanism section disposed in the hermetic container, and a motor disposed in the hermetic container to drive the compression mechanism section. The motor has a rotor and a stator disposed so as to surround an outer periphery of the rotor. The stator includes a stator core and oil passage grooves. The stator core has a hollow circular cylindrical section and a plurality of circumferentially arranged teeth protruding radially inward from an outer peripheral surface of the hollow circular cylindrical section. The oil passage grooves are located radially outside of the teeth. The oil passage grooves are formed by cutting an outer peripheral surface of the hollow circular cylindrical section.

Abstract: A preformed coil (20) to produce a self-supporting air-gap skewed winding of a small electric motor consisting of at least two preformed coils (20) positioned overlapping on a circumference of a winding (6) and a method and device for producing the coil. Two preformed coil sides (24a, 24b) lying in different radial planes are formed which are connected on their front ends (26a, 26b) by front connections. The front connections feature the radial plane offset from the winding offset sections (28) bridging the preformed coil sides (24a, 24b). The preformed coil sides (24a, 24b) are formed curved with a circular shape around a longitudinal axis (16), and the radius of curvature of the one radial outer preformed coil side (24a) is greater than the radius of curvature of the radial inner preformed coil side (24b).

Abstract: A rotating electric machine allowing a rotor and a stator thereof to assume any of various numbers of poles and any of various numbers of slots and enabling a reduction in vibration and noise is provided. The rotating electric machine according to the present invention includes a stator having a plurality of teeth and a plurality of slots, which is configured so that the shape of the front ends of the teeth and the opening width of the slots are made to change cyclically F times along the circumferential direction (F is a natural number equal to or greater than 2).

Abstract: A stator for a rotating electric machine, including an annular stator core having a plurality of slots circumferentially arranged in the stator core, and a stator winding wound around the stator core and comprised of a plurality of U-shaped conductor segments inserted in the slots and connected to each other. Each conductor segment includes a conductor and a bilayer insulative coating comprised of an insulating layer covering a peripheral surface of the conductor and a protective layer covering a peripheral surface of the insulating layer. The protective layer is formed of a material having a Young's modulus that is equal to or greater than a Young's modulus of the insulating layer at room temperature and less than the Young's modulus of the insulating layer in high temperature environments caused by heat generation of the stator winding.

Abstract: A stator includes a winding core and a plurality of winding mechanisms. A plurality of winding grooves are defined on an inner surface of the winding core. Each of the winding mechanisms includes a first conductive wire and a second conductive wire. The first conductive wire includes a first curve portion, a first pin, and a second pin. The second conductive wire includes a second curve portion, a third pin, and a forth pin. The first conductive wire and the second conductive wire can be alternately connected together one by one via a first pin, a second pin, a third pin, and a forth pin to form two coils.

Abstract: A brushless motor includes a first rotor core, a second rotor core, and a field magnet member. The first rotor core includes primary projecting pieces arranged along a circumferential direction at equal intervals. The second rotor core has the same shape as the first rotor core, and includes secondary projecting pieces arranged along the circumferential direction at equal intervals. The secondary projecting pieces are positioned between the primary projecting pieces that are adjacent to one another in the circumferential direction. The field magnet member is arranged between the first rotor core and the second rotor core. The field magnet member is magnetized along an axial direction to generate primary magnetic poles in the primary projecting pieces, and generate secondary magnetic poles in the secondary projecting pieces. A rotor includes the first rotor core, the second rotor core, and the field magnet member.

Abstract: A magnet wheel for an electric motor includes a shaft and a disk made of a plastic containing magnetic particles. The disk is arranged on a carrying hub and the carrying hub is pressed onto the shaft. The carrying hub is a slotted ring around which the disk is molded on by injection molding.

Abstract: A stator core for a rotating electric machine includes a plurality of split cores. Each of the plurality of split cores includes a back yoke, a tooth, and a single caulking portion. When each of the plurality of split cores is seen in an axial direction, two inner circumferential-side intersections and two outer circumferential-side intersections are defined, both circumferential-end surfaces of the tooth intersect an inner circumferential surface of the back yoke at the two inner circumferential-side intersections, virtual lines drawn by extending both the circumferential-end surfaces of the tooth intersect an outer circumferential surface of the back yoke at the two outer circumferential-side intersections, a central position of the caulking portion is disposed in an opposing angular region on a radially outer side out of four opposing angular regions defined by lines diagonally connecting the two inner circumferential-side intersections to the respective two outer circumferential-side intersections.

Abstract: A stator winding pattern of a hairpin drive motor includes a stator with 8 poles and 48 slots of a distribution winding where a hairpin-type of flat coil is inserted into a slot of a stator core and configured by a full pitch winding implementing 6 pitches of 3 phases and 2 in parallel, the pitch being a distance between adjacent slots, characterized in that: first to fourth layers are formed in the slot of the stator core in a radial direction of the stator core; and when a first layer or a fourth layer is set as a draw out part of one phase in an optional reference slot, a first draw out of a different phase is formed in a draw out slot having 16 pitches in a slot forward direction in a same layer based on the reference slot, and a second draw out of the different phase is formed in a draw out slot having 32 pitches in the slot forward direction in the same layer based on the reference slot.

Abstract: A stator winding pattern of a hairpin drive motor includes a stator with 8 poles and 48 slots of a distribution winding where a hairpintype of flat coil is inserted into a slot of a stator core and configured by a full pitch winding implementing 6 pitches of 3 phases and 2 in parallel, the pitch being a distance between adjacent slots, characterized in that: first to fourth layers are formed in the slot of the stator core in a radial direction of the stator core; and when a first layer or a fourth layer is set as a draw out part of one phase in an optional reference slot, a first draw out part of a different phase is formed in a draw out slot having 28 pitches in a slot forward direction in a same layer based on the reference slot, and a second draw out part of the different phase is formed in a draw out slot having 20 pitches in a slot reverse direction in the same layer based on the reference slot.

Abstract: A method for forming a concentric winding coil in which a coil end portion protruding from an axial end face of a stator core has a plurality of different nonlinear shapes, from a rectangular conductor wound in a predetermined number of turns, the method including forming the coil end portion into the plurality of different nonlinear shapes in one step by causing a die to make a stroke movement in a predetermined direction with respect to the rectangular conductor being set.

Abstract: Disclosed is a motor, the motor according to exemplary embodiments of the present disclosure including an insulator body coupled to a stator core wound with a plurality of coils applied with powers of mutually different polarities to prevent the coil and the stator coil from being short-circuited, a terminal housing coupling unit integrally formed with the insulator body to be coupled to a terminal housing supplying an outside power by being circumferentially protruded, and a coil guide unit formed at the terminal housing coupling unit to prevent coils connected to a terminal of each polarity installed at the terminal housing from being short-circuited.

Abstract: A rectangular wire is wound on a stator core having a plurality of teeth and a plurality of slots. A plurality of rectangular wire elements is provided by cutting a rectangular wire into a predetermined length and bending into a substantial U-shape. A plurality of rectangular wire pieces configured to form a coil by connecting predetermined end portions of the rectangular wire elements is molded as a sub-assembly. Each of the plurality of the rectangular wire elements is inserted into a predetermined pair of the slots from a first end face of the stator core such that the respective end portions of the rectangular wire elements project from a second end face of the stator core. The rectangular wire pieces of the sub-assembly are fixed to the end portions of the rectangular wire elements, thereby manufacturing a stator coil having compact coil ends easily.

Abstract: An axial gap electrical machine employs unique architecture to (1) overcome critical limits in the air gap at high speeds, while maintaining high torque performance at low speeds, while synergistically providing a geometry that withstands meets critical force concentration within these machines, (2) provides arrangements for cooling said machines using either a Pelletier effect or air fins, (3) “windings” that are produced as ribbon or stampings or laminates, that may be in some cases be arranged to optimize conductor and magnetic core density within the machine. Arrangements are also proposed for mounting the machines as wheels of a vehicle, to provide ease of removing and installing said motor.

Abstract: A DC motor includes a core, two bifurcated branching portions, an inner coil, and an outer coil. The core includes teeth. Each tooth includes a distal end and a basal end. The branching portions are located at the distal end. The inner coil is wound around the basal end. The outer coil is wound around each of the branching portions of the tooth and a branching portion of an adjacent one of the teeth. The inner coil and the outer coil each have a number of turns that is adjusted so that an inductance of the inner coil conforms to an inductance of the outer coil.

Abstract: The stator includes a stator core, a plurality of phase windings, a neutral line and a fixing member. The plurality of phase windings are wounded a plurality of times by a predetermined winding method crossing between a plurality of slots. One lead end of each phase winding is supplied with a phase current. The other lead end of each phase winding is a neutral point connecting portion. The other lead end is pulled out from an axially end portion of the stator core. The neutral line connects the neutral point connecting portions of the phase windings of different phases together. The neutral line is separate from the phase windings. The fixing member fixes the neutral line to a yoke portion via an intermediate member. The intermediate member is made of resin.

Abstract: An electrical collecting and distributing member holding structure is composed of a stator including a multiplicity of cores arranged annularly, windings wound around the multiplicity of cores respectively, and an insulator for electrical insulation between the cores and the windings, a plurality of annular electrical collecting and distributing members held around the stator to collect and distribute electric current to the windings, and a holding portion formed on the insulator. The plurality of electrical collecting and distributing members are being held in the holding portion.

Abstract: A motor includes an armature core having m×n teeth (m is an odd number ?3, and n is a natural number ?2), a plurality of coils, and a commutator. The motor further includes field magnets including 2n magnetic poles and at least a first-potential brush and at least a second-potential brush. The commutator includes a segment group defined by 2m×n segments. Only the coil defined by winding a continuous conducting wire in a predetermined winding direction is disposed in each of k teeth among the m×n teeth, and only the coil defined by winding the continuous conducting wire in a direction reverse to the predetermined winding direction is disposed in each of teeth disposed at a position separated from each of the k teeth at 360×i degrees (i is a natural number ?(n?1)) of electric angles.

Abstract: This invention is concerning a control apparatus for an AC rotary machine including: an AC rotary machine that includes a first winding and a second winding which have a phase difference; a first current detection unit that detects a current of the first winding; a second current detection unit that detects a current of the second winding; a control unit that calculates a first voltage command and a second voltage command on the basis of a detected current value; and a first detectability determination unit that determines a detectability of the current of the first winding, detected by the first current detection unit, on the basis of at least one of the voltage commands , wherein the control unit calculates the first voltage command and the second voltage command on the basis of the detected current value of the second winding when the current of the first winding is undetectable.

Abstract: A multi-phase multi-pole electric machine attached to a vehicle. The multi-phase multi-pole electric machine includes rotor, stator with five phase windings, machine controller, and torque sensors. The machine controller controls the flow of current. The torque sensors sense the torque exerted by the vehicle and transmits the information to the machine controller. The machine controller provides four degree of control through injection of five phase currents and thus providing higher torque.

Abstract: In one embodiment, a generator includes an alternating current exciter to output first, second and third alternating currents respectively having first, second and third phases, and a rotary rectifier to convert the first, second and third alternating currents into first, second and third direct currents, respectively. The generator further includes a rotating shaft on which the exciter and the rectifier are mounted, and plural conductors mounted on the shaft, and including one or more first conductors, one or more second conductors and one or more third conductors to respectively supply the first, second and third alternating currents from the exciter to the rectifier. The plural conductors include one or more conductor groups in each of which two or more conductors are collectively arranged, and each of the conductor groups includes the two or more conductors arranged to cancel a magnetic field around each conductor in the same group.

Abstract: In a rotary electric machine, wound wires are connected to a first terminal and a second terminal. Circuit terminals that are configured from a conductive metal other than aluminum, and the first terminal and the second terminal that are configured from a metal with a principal component of aluminum are joined together inside a circuit chamber that has high water resistant properties. Corrosion is accordingly suppressed at join sites of the circuit terminals with the first terminal and the second terminal. There is therefore no need to coat the join sites with for example a sealing material in order to suppress corrosion at the join sites. Good electrical continuity is accordingly enabled between the circuit terminals and the wound wires while suppressing an increase in costs, even when the wound wire is configured from a metal with a principal component of aluminum.

Abstract: In a rotary electric machine, when armature coil bodies of respective phases in which first and second armature windings, are both wound around 6 k×n teeth are set as Ua, Va, and Wa, armature coil bodies of respective phases in which only the first and armature winding is wound around 6 m×n teeth are set as Ub, Vb, and Wb, and armature coil bodies of respective phases in which only the second armature winding is wound around 6 m×n teeth are set as Uc, Vc, and Wc, Ua, Va, Wa, Ub, Vb, Wb, Uc, Vc, and Wc are respectively arranged so as to exhibit 2 n-fold rotational symmetry about an axial center of a rotor.

Abstract: A stator includes an annular stator core, a stator coil and a plurality of lead wires. The stator coil is comprised of windings mounted on the stator core and has a coil end part protruding from an axial end face of the stator core. Each of the lead wires is made up of a corresponding one of end portions of the windings of the stator coil. The lead wires include, at least, a first lead wire and a second lead wire. The first lead wire has a radially-extending part that adjoins the coil end part of the stator coil and extends in a radial direction of the stator core. The second lead wire has a circumferentially-extending part that adjoins and intersects the radially-extending part of the first lead wire and is located on the opposite side of the radially-extending part to the coil end part of the stator coil.

Abstract: A stator core is formed by deforming a core assembly having core pieces coupled in a strip form into an annular shape, and by joining both ends of the core assembly together to make a core-fastening portion. Individual phase windings are routed from one end of the core assembly toward another end. Lead portion (43v) of phase winding (40v) and lead portion (43w) of phase winding (40w) make up respective wire terminals. Lead portion (43u) of another phase winding (40u) is extended through a plural number of the core pieces in a direction of the lead portions (43v and 43w), and a wire terminal of the extended lead portion (43u) and the wire terminals of the other lead portions (43v and 43w) are electrically connected to provide a neutral point of three-phase Y-connection circuit.

Abstract: A rotary electrical machine comprising a rotor and a stator (1). The stator comprises a tooth (21) delimited by notches (22), and a winding composed of n×M wires (3), wherein n corresponds to a number of phases and is equal to at least 2, and M corresponds to a number of continuous electric wires for each phase (3) and is equal to at least one. The winding is composed of successive turns, each of the successive turns comprising n×M wires wound simultaneously in n of the notches (22) to be inserted in n series of notches. Each of the series of the notches is dedicated to a single phase, and for each of the successive turns, each of the assembly of the M wires (3) constitutes a phase and is inserted in the same series of the notches (22).

Abstract: An electromagnetic bearing arrangement for a rotating equipment includes an electromagnet; an amplifier arrangement based on IGBT (Insulated-Gate Bipolar Transistor) switches; a power supply; a controller; and a position sensor. The controller includes a position control module and a direct force control module, the position sensor is operatively connected to the control module to calculate a force reference (Fref) based on the measured position of the rotating equipment. The electromagnetic bearing arrangement includes a sensor for measuring at least one parameter (iu, id) indicative of a force exerted by the electromagnet to calculate an estimated force (Fcal), to compare the force reference with the estimated force, and to control the amplifier.

Abstract: The invention relates to a coil former (110) for a coil (100) of an electric machine (400). The coil former has a coil core (112) and a terminating wall (115) having a first edge (118) and a second edge (119). The first edge is arranged opposite the second edge, and the terminating wall is designed to retain a coil wire (120), which can be wound around the coil core, in a wound position. The terminating wall has a first retaining projection (130) and a second retaining projection (140), wherein the first retaining projection extends in an extension plane (117) of the terminating wall from the first edge in a first projection direction (131) along a first center axis (132) of the first retaining projection and the second retaining projection extends in the extension plane (117) of the terminating wall from the second edge in a second projection direction (141) along a second center axis (142) of the second retaining projection.

Abstract: A stator of a rotating electric machine includes plural slots disposed in a circumferential direction of a stator core, and a coil body formed by a coil that is disposed as a single conductor in the slot in the circumferential direction of a stator core and that is wound for plural turns in the slot in a radial direction of a stator core. The coil has a flat conductor section, a magnetic body layer provided around the flat conductor section, and an insulating film provided around the magnetic body layer.

Abstract: A winding for an electric machine is provided. The electric machine includes conductor bars which are arranged one above the other and each of which has a cooling slot. The conductor bars are designed such that the height of the conductor bars increases in the radial direction and the effective cooling cross-section decreases in the radial direction.

Abstract: A motor includes an annular stator core including teeth arranged side by side in a circumferential direction on an inner circumferential surface of a back yoke. The motor includes 3n (n is an integer) first coil groups arranged in the circumferential direction at regular intervals, each of the first coil groups being constituted of first coils that are respectively wound, in a concentrated manner, around the teeth arranged adjacent to one another, and that are excited by a first inverter, and also includes 3n second coil groups arranged in the circumferential direction at regular intervals, each of the second coil groups being constituted of second coils that are respectively wound, in a concentrated manner, around the teeth arranged adjacent to one another in positions different from positions of the teeth around which the first coils are wound in a concentrated manner, and that are excited by a second inverter.

Abstract: A commutator (10) comprising a plurality of commutator bars (12) formed from a graphite structure (30) and a metal sheet (20) having soldered to the graphite structure (30) includes a brazing process followed by a soldering process. The brazing process includes applying a brazing material the graphite structure (30) and brazing at an elevated temperature to form a brazing layer (40). The soldering process includes applying a solder material to the brazing layer (40), placing the metal sheet (20) on the solder material, and soldering to form a solder layer (50) affixing the metal sheet (20) to the graphite structure (30). A plurality of grooves (70) are cut in the graphite structure (30) and the metal sheet (20) to form the commutator bars (12) arranged in an intermittent ring or circle.

Abstract: A stator for a rotational electrical machine includes a cylindrical stator core and a stator winding. The stator core includes slots arranged at intervals in a circumferential direction. The slots pass through the stator core in an axial direction. The stator winding is obtained by joining together ends of U-shaped conductors inserted through the slots. A second insertion part is located away from a first insertion part in the circumferential direction and is inserted in its corresponding slot. A joining end part is joined to another U-shaped conductor at a joining position away from the insertion part in the circumferential direction. The joining end part includes a first bent part and at least one second bent part. The first bent part is bent near an opening of its corresponding slot. The second bent part is bent between the first bent part and the joining position.

Abstract: A method may involve winding a stator of a motor having m phases, wherein the stator includes n teeth. The method may include winding a wire around a first tooth of the stator and winding the wire around a second tooth of the stator, wherein the second tooth is ( n 2 ? m - 1 ) teeth from the first tooth. The method may also include winding the wire around a third tooth of the stator, wherein the third tooth is [ ( m - 1 ) * ( n 2 ? m ) ] + 1 teeth from the second tooth. The method may also include winding the wire around a fourth tooth of the stator, wherein the fourth tooth is ( n 2 ? m - 1 ) teeth from the third tooth. The method may also include winding the wire around a fifth tooth of the stator, wherein the fifth tooth is [ ( m - 1 ) * ( n 2 ? m ) ] + 2 teeth from the fourth tooth.

Abstract: A rotary electric machine is a rotary electric machine including a stator of a distributed winding type including a plurality of first slots, in each of which winding wires of a plurality of same phases or a winding wire of one phase are arranged, and a plurality of second slots, in each of which winding wires of a plurality of different phases are arranged. The total number of turns in each of the first slots is same as one another. The total number of turns in each of the second slots is same as one another. The total number of turns in the first slot and the total number of turns in the second slot are different from each other.

Abstract: A stator includes a first teeth unit including a first insulator having an annular first crossover wire guide and a plurality of first winding units radially provided at regular intervals on an outer circumference of the first crossover wire guide to cover teeth of one phase group of an alternating current, the teeth of the one phase group having upper halves fitted to the first winding units, a third insulator that covers lower halves of the teeth, and a winding wire of one phase wound around the teeth of the one phase group, a second teeth unit having an identical configuration to that of the first teeth unit in which a winding wire of the other phase is wound in a concentrated manner, with second winding units inserted between adjacent ones of the first winding units, and an annular yoke including a plurality of recesses at regular intervals.