JP5072502B2 - Rotating motor - Google Patents

Description

  The present invention relates to a rotary motor that is used in, for example, a supercharger for automobiles and that is operated at high speed while being supplied with low-voltage and large-current power.

  In a rotating machine in which multiple strand conductors constituting armature windings are housed in slots of a stator core and these multiple strand conductors are connected to each other at both ends protruding out of the slots, the multiple strand conductors When an alternating current flows through the conductor, a voltage is induced between the strands in each portion in the longitudinal direction of the conductor. And, in any wire pair, if a large difference occurs in the induced voltage of each wire over the entire length of the conductor, there is a problem that a large circulating current flows through the closed-loop wire pair and the loss increases. .

  In order to solve this, each wire in the conductor is shifted by 360 degrees or 540 degrees, for example, so that the voltage induced between the wires is almost equal over the entire length of the conductor so that no circulating current flows. Multiple strand transition conductors have been proposed (see, for example, Patent Document 1). The transition of the strands is made by sequentially changing the position of each strand in the conductor. In the conductor cross section, it is considered that a certain strand moves circularly around the center of the cross section, and at the angle of rotation. Represents the degree of metastasis. For example, a transition in which each strand passes through all positions in the conductor cross section and becomes the same position as the position starting at the opposite end of the slot is referred to as a 360-degree transition.

JP 59-139636 A

However, in a rotary electric motor used for a supercharger for automobiles, electric power of low voltage and large current is supplied, and the stator coil for generating torque is thick and has a small number of turns. Therefore, when trying to apply a conventional multiple strand transition conductor to a stator coil of a rotary motor used in an automobile supercharger, it is necessary to shift each strand having a large wire diameter to 360 degrees or 540 degrees, Fabrication of the wire transition conductor was extremely difficult.
In addition, when each element wire is bent outside the slot, since the diameter of each element wire is large, the radius of curvature cannot be reduced, the axial length of the coil end is increased, and the resonance critical speed of the rotary motor is reduced. This creates a new problem. In particular, a rotary electric motor used for a supercharger for automobiles is operated at a high speed, so that it is not preferable to reduce the critical resonance speed (mechanical critical speed).

  This invention was made to solve such a problem, and even if a wire having a large wire diameter is used, it can be easily transferred within the slot, and the axial length of the coil end can be shortened. An object is to obtain a rotary electric motor that can be used in a supercharger for an automobile.

The rotary electric motor according to the present invention is configured so that teeth are equiangular in the circumferential direction so as to define a rotor that is coaxially fixed to a rotation shaft and a slot that is open to the inner circumference side so as to surround the rotor. A stator core arranged at a pitch, and a stator having a torque generating drive coil wound around the stator core. The torque generating drive coil has a one-turn phase coil wound around each of the teeth in a concentrated winding, and each of the phase coils is formed by stacking a plurality of strands into a plurality of strands. configured electricity and the pair of wires metastasis conductors housed respectively in both sides of the slot sandwiching the teeth, the ends of the pair of wires transition conductor extending to one end of both sides of the slot to be connected, a flat conductive plate disposed along one end surface of the tooth, respectively electrically connected to the ends of the pair of wires metastasis conductors extending to the other end of both sides of the slot And a pair of lead conductor plates disposed along the other end surface of the tooth . The strands constituting each of the pair of strand transition conductors are shifted 180 degrees.

According to the present invention, since the transition angle in the slot of the strands constituting each strand transition conductor is as small as 180 degrees, even if the strand has a large wire diameter, the strand transition conductor can be easily produced. . Since the strand transition conductor is composed of a plurality of strands and the number of turns of each phase coil is one turn, the strand diameter can be increased and a low voltage and large current can flow.
Further, since the phase coil is formed of concentrated windings, there is no interference between the coil ends, and the axial length of the coil ends can be shortened. Further, since there is no interference between the coil ends, the coil end can be configured by arranging the flat conductor plate and the lead conductor plate along the end face of the tooth. Thereby, even if it uses a strand with a large wire diameter, the axial direction length of a coil end can be shortened remarkably. Therefore, the natural vibration frequency of the rotor is increased, and the mechanical critical speed is increased to enable smooth high-speed operation.

Embodiment 1 FIG.
1 is a cross-sectional view schematically showing a configuration of a rotary electric motor according to Embodiment 1 of the present invention, and FIG. 2 is a conductor portion in the slot of a stator coil applied to the rotary electric motor according to Embodiment 1 of the present invention. FIG. 3 is a perspective view of the main part of the stator coil applied to the rotary electric motor according to Embodiment 1 of the present invention as seen from one side, and FIG. 4 is an embodiment of the present invention. FIG. 5 is a perspective view of a principal part of a winding state of a stator coil applied to the rotary motor according to the first embodiment when viewed from the other side, and FIG. 5 shows the stator coil applied to the rotary motor according to Embodiment 1 of the present invention. It is a perspective view which shows the 1 phase coil which comprises.

  In FIG. 1, a rotary motor 1 includes a rotor 3 fixed coaxially to a rotating shaft 2, and a stator coil as a torque generating drive coil on a stator core 5 disposed so as to surround the rotor 3. And a stator 4 formed by winding 8.

The stator core 5 is manufactured by laminating and integrating a large number of magnetic steel plates formed in a predetermined shape, and, for example, six teeth 6 are arranged at an equiangular pitch in the circumferential direction so as to protrude to the inner peripheral side. Yes. A slot 7 opened to the inner peripheral side is defined between the teeth 6 adjacent in the circumferential direction.
The stator coil 8 has a six-phase coil 9 wound around a single tooth 6 without straddling the slot 7 and wound in a so-called concentrated winding method.
In the first embodiment, the configuration of the rotor 3 is not particularly limited. For example, a rotor equipped with a permanent magnet or a coil wound with a field coil is used.

Next, each phase coil 9 constituting the stator coil 8 will be described with reference to FIGS.
Each phase coil 9 constituting the stator coil 8 includes a pair of strand transition conductors 11 stacked in 16 layers of strands 10 and housed in the slot 7 by being stacked in two layers of strands, and the slot 7. A flat conductor plate that is electrically connected to the end portions of both strand transition conductors 11 extending to one end of the core by soldering, brazing, fusing, etc., and electrically connecting the pair of strand transition conductors 11 to each other 12 and a pair of lead conductor plates 13 and 14 electrically connected to the end of each strand transition conductor 11 extending to the other end of the slot 7 by soldering, brazing, fusing, etc. I have.

  The phase coil 9 has the flat conductor plate 12 along one end surface of the tooth 6, the pair of strand transfer conductors 11 are respectively housed in the pair of slots 7 sandwiching the tooth 6, and the pair of lead conductor plates 13. , 14 along the other end face of the tooth 6 and wound by concentrated winding for one turn. Then, the 16 strands 10 are connected in parallel between one lead conductor plate 13 and the flat conductor plate 12 to be housed in a slot 7 on one side of the tooth 6 in two layers, The transition from the conductor plate 13 to the flat conductor plate 12 is 180 degrees. In addition, 16 strands 10 are connected in parallel between the flat conductor plate 12 and the other lead conductor plate 14 to form two layers and are accommodated in the slot 7 on the other side of the tooth 6. The angle is shifted 180 degrees from 12 to the other lead conductor plate 14. The flat conductor plate 12 and the lead conductor plates 13 and 14 constitute a coil end.

In this way, the phase coil 9 is wound around each tooth 6. If the stator coil 8 is a three-phase AC winding, two phase coils 9 wound around three pairs of teeth 6 facing each other are respectively a U-phase, V-phase, and W-phase coil. Constitute.
Here, as the element wire 10, for example, an enameled wire in which a copper wire as a conducting wire is coated with an enamel layer (insulation layer between ground) such as a polyamideimide resin or a polyesterimide resin is used. The flat conductor plate 12 and the lead conductor plates 13 and 14 are, for example, copper thin plates coated with an enamel layer that is an insulating layer between the ground. However, the enamel layer is removed from the electrical connection portions of the wire 10, the flat conductor plate 12, and the lead conductor plates 13 and 14. And the electrical connection part of the strand 10, the flat conductor board 12, and the lead conductor boards 13 and 14 is insulation-coated after connecting.

According to the first embodiment, since each strand 10 constituting the strand transition conductor 11 is shifted 180 degrees in the slot 7, the current induced at both ends of each strand 10 by the end magnetic flux. Flows in a direction that cancels each other, and the circulating current flowing through the pair of strands forming the closed loop is reduced, thereby reducing the copper loss.
Moreover, since the transition angle in the slot 7 of each strand 10 which comprises the strand transition conductor 11 is as small as 180 degree | times, even if it is a strand with a large wire diameter, the strand transition conductor 11 can be produced easily. .
In addition, since the strand transition conductor 11 is composed of a two-layer strand and the number of turns of each phase coil 9 is one turn, the wire diameter of the strand 10 can be increased and a low voltage and large current can flow. it can.

  Further, since the phase coil 9 is formed as a concentrated winding, there is no interference between the coil ends, and the axial length of the coil ends can be shortened. Further, since there is no interference between the coil ends, the coil end can be configured by arranging the flat conductor plate 12 and the lead conductor plates 13 and 14 along the end face of the tooth 6. Thereby, even if it uses the strand 10 with a large wire diameter, the axial direction length of a coil end can be shortened remarkably. Therefore, the distance between bearings (not shown) that support the rotating shaft 2 at both ends of the rotor 3 can be shortened. As a result, the natural vibration frequency of the rotor 3 is increased, and the mechanical critical speed is increased to enable smooth high-speed operation.

  Therefore, according to the first embodiment, a low voltage and large current can be flowed, high speed operation is possible, and a rotary electric motor that can be used for an automobile supercharger can be realized.

Embodiment 2. FIG.
6 is a perspective view showing a one-phase coil constituting a stator coil applied to a rotary electric motor according to Embodiment 2 of the present invention.
In FIG. 6, the phase coil 15 is configured by stacking 16 strands 10 into two strands of wires, and includes a pair of in-slot conductor portions 17 and a pair of in-slot conductor portions 17 housed in the slot 7. A pair of lead wire conductors 16 composed of an outer-slot conductor portion 18 for connecting the wires 10 and a pair of lead wires electrically connected to both ends of the wire transition conductor 16 by soldering, brazing, fusing, etc. Conductor plates 13 and 14.
The second embodiment is configured in the same manner as the first embodiment except that the phase coil 15 is used instead of the phase coil 9.

  Although not shown in the second embodiment, the phase coil 15 includes a pair of slots 7 that sandwich the pair of in-slot conductor portions 17 between the pair of in-slot conductor portions 17 with the conductor portion 18 outside the slot along one end surface of the tooth 6. The pair of lead conductor plates 13 and 14 are wound around the other end surface of the tooth 6 and wound by concentrated winding for one turn. Sixteen strands 10 are connected in parallel between the pair of lead conductor plates 13 and 14.

  The strands 10 constituting the strand transition conductor 16 are shifted 180 degrees from one lead conductor plate 13 to the other lead conductor plate 14. That is, the portions of the strands 10 constituting the pair of in-slot conductor portions 17 are each shifted 90 degrees. The portion of the wire 10 constituting the outside-slot conductor portion 18 forms eight rows and two layers on the end face of the stator core 5 and constitutes a pair of in-slot conductor portions 17 extending from both slots 7. The ends of the strands 10 are connected to each other while maintaining their radial position and axial position. That is, the portion of the strand 10 constituting the outside-slot conductor portion 18 is maintained in the position within the strand transition conductor 16 and is not transferred. The outside-slot conductor portion 18 and the lead conductor plates 13 and 14 constitute a coil end.

Also in the second embodiment, the portion of the strand 10 constituting the pair of in-slot conductor portions 17 is shifted 90 degrees, and the entire strand transition conductor 16 is shifted 180 degrees. As in the first embodiment, the currents induced at both ends of each strand 10 by the end magnetic flux flow in directions that cancel each other, and the circulating current flowing through the pair of strands constituting the closed loop is reduced, reducing the copper loss. Can be reduced.
Further, since the pair of in-slot conductor portions 17 accommodated in the slots 7 are respectively shifted by 90 degrees, the angle to be transferred in each slot 7 is further reduced, and the strand transition conductor 16 can be more easily manufactured. .

  In addition, since the strand transition conductor 16 is composed of a two-layer strand and the number of turns of each phase coil 15 is one turn, the wire diameter of the strand 10 can be increased and a low voltage and large current can flow. it can.

  Further, the portion of the wire 10 constituting the outside-slot conductor portion 18 forms eight rows and two layers on the end face of the stator core 5 to constitute a pair of in-slot conductor portions 17 extending from both slots 7. Since the ends of the strands 10 are connected to each other while maintaining their radial position and axial position, each strand 10 can be bent with a small radius of curvature, and the axial length of the coil end can be The increase in height can be suppressed. Further, since the phase coil 15 is configured as a concentrated winding, there is no interference between the coil ends, and the axial length of the coil ends can be shortened. Thereby, even if it uses the strand 10 with a large wire diameter, the axial direction length of a coil end can be shortened remarkably, and the fall of a mechanical critical speed can be prevented.

Embodiment 3 FIG.
FIG. 7 is a partially broken perspective view showing the configuration of a magnetic inductor type synchronous rotating machine according to Embodiment 3 of the present invention.
In FIG. 7, a magnetic inductor type synchronous rotating machine 20 as a rotating electric motor has a torque applied to a rotor 21 coaxially fixed to the rotating shaft 2 and a stator core 26 disposed so as to surround the rotor 21. A stator 25 formed by winding a stator coil 30 as a generating drive coil, a field coil 31 as a field magnetomotive force generating coil, a rotor 21, a stator 25, and a field coil 31 are accommodated. The case 32 is provided.

  The rotor 21 is produced by laminating and integrating a predetermined number of magnetic steel plates, for example, with the first and second magnetic bodies 22 and 23 produced by laminating and integrating a plurality of magnetic steel plates formed in a predetermined shape, And a disk-shaped partition wall 24 in which an insertion hole (not shown) is formed at the axial center. The first and second magnetic bodies 22 and 23 are formed in the same shape, and cylindrical base portions 22a and 23a each having a rotation shaft insertion hole drilled at an axial center position, and radial directions from the outer peripheral surfaces of the base portions 22a and 23a. It is composed of four salient poles 22b and 23b that are provided outward and project in the axial direction and are provided at equiangular pitches in the circumferential direction. The first and second magnetic bodies 22, 23 are arranged with a semi-salient pitch shifted in the circumferential direction, are arranged in close contact with each other via the partition wall 24, and the rotary shaft 2 inserted through the rotary shaft insertion holes. It is fixed and configured. The outer diameter of the partition wall 24 is the same as the outer diameter of the first and second magnetic bodies 22 and 23 (the outer diameter of the salient poles 22b and 23b).

  The stator core 26 includes first and second stator cores 27 and 28 that are manufactured by laminating and integrating a large number of magnetic steel sheets formed in a predetermined shape. The first and second stator cores 27 and 28 are manufactured to have the same shape, and are protruded radially inward from the inner peripheral surfaces of the cylindrical core backs 27a and 28a and the core backs 27a and 28a in the circumferential direction. And six teeth 27b, 28b provided at an equiangular pitch. Slots 27c and 28c opened to the inner peripheral side are defined between the teeth 27b and 28b adjacent in the circumferential direction. The first and second stator cores 27 and 28 are disposed between the axial thickness separations of the partition wall 24 with the circumferential positions of the teeth 27b and 28b being matched, and the first and second magnetic bodies 22 and 23, respectively. Go.

  And the phase coil 29 is the same as the phase coil 9 in the said Embodiment 1, the flat conductor board 12 is made to follow the one end surface of the teeth 28b, and a pair of strand transition conductor 11 is made into the teeth 27b and the teeth 28b. Are housed in one slot 27c, 28c and the other slot 27c, 28c, respectively, and the pair of lead conductor plates 13, 14 are placed along the other end surface of the tooth 27b and concentrated by one turn. Wrapped. Sixteen strands 10 are connected in parallel between one lead conductor plate 13 and the flat conductor plate 12 to form two layers and accommodated in one slot 27c, 28c, and one lead conductor plate The angle is shifted 180 degrees from 13 to the flat conductor plate 12. In addition, 16 strands 10 are connected in parallel between the flat conductor plate 12 and the other lead conductor plate 14 to form two layers and are accommodated in the other slots 27c and 28c. It has been shifted 180 degrees before reaching the other lead conductor plate 14. The flat conductor plate 12 and the lead conductor plates 13 and 14 constitute a coil end.

  FIG. 7 shows only the one-phase coil 29 wound in a concentrated manner on one pair of the teeth 27b and the teeth 28b. However, the stator coil 30 is actually formed of the teeth 27b and the teeth 28b. The three phases U, V, and W are sequentially repeated twice and wound in concentrated winding.

  The field coil 31 is formed by winding a conductor wire in a cylindrical shape, and is interposed between the core backs 27 a and 28 a of the first and second stator cores 27 and 28. The rotating shaft 2 that integrally fixes the first and second magnetic bodies 22 and 23 and the partition wall 24 is supported by a bearing portion (not shown).

Next, the operation of the magnetic inductor type synchronous rotating machine 20 configured as described above will be described.
When the field coil 31 is energized, it flows from the salient poles 22b of the first magnetic body 22 to the first stator core 27 and then flows in the axial direction, as indicated by arrows in FIG. A magnetic flux returning from 28 to the salient pole 23b of the second magnetic body 23 is formed. At this time, since the salient poles 22b and 23b of the first and second magnetic bodies 22 and 23 are shifted by a half salient pole pitch in the circumferential direction, when viewed from the axial direction, the magnetic flux is in the circumferential direction. It acts as if they were arranged alternately. Thus, the magnetic inductor type synchronous rotating machine 20 is a non-commutator motor, and magnetically operates in the same manner as an 8-pole 6-slot concentrated winding type permanent magnet rotating electric machine.

In the third embodiment, since the phase coil 29 having the same configuration as that of the phase coil 9 in the first embodiment is used, each strand 10 constituting the strand transition conductor 11 is 180 in the slots 27c and 28c. The circulating current flowing through the pair of wires constituting the closed loop is reduced, and the copper loss can be reduced.
Moreover, since the transition angle of each strand 10 which comprises the strand transition conductor 11 is as small as 180 degree | times, even if it is a strand with a large wire diameter, the strand transition conductor 11 can be produced easily.
Further, since the strand transition conductor 11 is composed of a two-layer strand and the number of turns of each phase coil 29 is one turn, the wire diameter of the strand 10 can be increased and a low voltage and large current can flow. it can.

  Further, since the phase coil 29 is configured as a concentrated winding, there is no interference between the coil ends, and the axial length of the coil ends can be shortened. Further, since there is no interference between the coil ends, the coil end can be configured by arranging the flat conductor plate 12 and the lead conductor plates 13 and 14 along the end surfaces of the teeth 27b and 28b. Thereby, even if it uses the strand 10 with a large wire diameter, the axial direction length of a coil end can be shortened remarkably. Therefore, the distance between bearings (not shown) that support the rotating shaft 2 at both ends of the rotor 21 can be shortened. As a result, the natural vibration frequency of the rotor 21 is increased, and the mechanical critical speed is increased to enable smooth high-speed operation.

  In the third embodiment, the phase coil 29 having the same configuration as that of the phase coil 9 in the first embodiment is used. However, the phase coil 15 in the second embodiment may be used.

Embodiment 4 FIG.
In each of the above embodiments, an enameled wire obtained by coating an enamel layer that is a ground insulating layer on a copper wire is used as an element wire. In this fourth embodiment, silicon dioxide or the like is used as an insulating oxide film layer. The silicon oxide is coated on the entire surface of the copper wire, and then the enamel layer is coated to produce a strand.

In order to produce this strand transition conductor, a large number of strand groups are twisted. In this twisting process, compressive or tensile stress acts on the ground insulating layer such as the enamel layer, and in the worst case, the ground insulating layer is damaged.
In the fourth embodiment, since an insulating oxide layer such as silicon dioxide is coated on the lower layer of the ground insulating layer, sufficient insulation is ensured even when the ground insulating layer is damaged. be able to.

Here, since silicon dioxide coated on the entire surface of the copper wire is used as the lower layer of the enamel layer, sufficient insulation is ensured. However, when this rotary electric motor is used at a low voltage for vehicles or the like, it is not necessary to form an oxide layer having an excellent insulating property such as silicon dioxide under the enamel layer. Even if copper oxide (Cu ₂ O) as a physical layer is formed on the surface by oxidizing the copper wire itself, and then enameled wire that covers the enamel layer is used as an element wire, it is caused by damage to the enamel layer. It is possible to prevent a short circuit between the wires.

In each of the above embodiments, the strand transition conductor is configured as a two-layer strand array by stacking a plurality of strands. However, the number of strands constituting the strand transition conductor is not limited. Is not limited to two layers, but may be a plurality of layers, for example, three layers or four layers.
In each of the above embodiments, an enameled wire is used as the strand, but a Kapton winding, a mica tape winding, or the like may be used as the strand.
Further, in each of the above embodiments, a copper wire is used as the conducting wire of the element wire, but the conducting wire is not limited to a copper wire, and for example, a nickel-plated copper wire, an aluminum wire, or the like may be used.

Here, in the case of using a wire made of an aluminum wire as a conducting wire, the phase coil can be reduced in weight compared to the case of using a wire made of a copper wire as a conducting wire. The strength of the mounting support portion of the rotary motor can be reduced, and the size of the entire device including the support structure can be reduced. Therefore, applying this rotary electric motor using an aluminum wire as a conducting wire to an application installed in a narrow mounting space of a vehicle such as an electric assist turbo that assists acceleration of an automobile supercharger is particularly effective. It is valid.
Moreover, the alumite film formed on the surface of the aluminum wire by subjecting the aluminum wire to alumite treatment has excellent insulating properties. Therefore, if an electric wire obtained by anodizing an aluminum wire, that is, an anodized electric wire is used for the strand, insulation between the strands can be secured, and the formation of an enamel layer is not required, resulting in a reduction in cost. Is planned.

These are the cross sections which show typically the structure of the rotary electric motor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the conductor part in the slot of the stator coil applied to the rotary electric motor which concerns on Embodiment 1 of this invention. It is the principal part perspective view which looked at the winding state of the stator coil applied to the rotary electric motor which concerns on Embodiment 1 of this invention from the one surface side. It is the principal part perspective view which looked at the winding state of the stator coil applied to the rotary electric motor which concerns on Embodiment 1 of this invention from the other surface side. It is a perspective view which shows the 1 phase coil which comprises the stator coil applied to the rotary electric motor which concerns on Embodiment 1 of this invention. It is a perspective view which shows the 1 phase coil which comprises the stator coil applied to the rotary electric motor which concerns on Embodiment 2 of this invention. It is a partially broken perspective view which shows the structure of the magnetic inductor type synchronous rotary machine which concerns on Embodiment 3 of this invention.

Explanation of symbols

  1 Rotating motor, 2 Rotating shaft, 3 Rotor, 4 Stator, 5 Stator core, 6 Teeth, 7 Slot, 8 Stator coil (Torque generating drive coil), 9 phase coil, 10 strand, 11 strand Transition conductor, 12 flat conductor plate, 13, 14 lead conductor plate, 15 phase coil, 16 strand transition conductor, 17 slot inner conductor portion, 18 slot outer conductor portion, 20 magnetic inductor type synchronous rotating machine (rotary motor), 21 Rotor, 22 First magnetic body, 22a Base, 22b Salient pole, 23 Second magnetic body, 23a Base, 23b Salient pole, 25 Stator, 26 Stator core, 27 First stator core, 27b Teeth (first 1 tooth), 27c slot (first slot), 28 second stator core, 28b tooth (second tooth), 28c slot (second slot), 29 phase Yl, 30 stator coils (torque generating driving coil) 31 field coil (field magnetomotive force generating coil).

Claims (5)

A rotor fixed coaxially to the rotation axis;
The stator core is disposed so as to surround the rotor and teeth are arranged at an equiangular pitch in the circumferential direction so as to define a slot opening on the inner peripheral side, and the stator core is wound around the stator core A stator having a torque generating drive coil,
The torque generating drive coil has a one-turn phase coil wound around each of the teeth in a concentrated winding;
Each of the phase coils, a pair of wires transition conductor is configured to wire rows of a plurality of layers are respectively housed in the sides of the slot which sandwich the tooth by stacking a plurality of strands, the two sides the the ends of the pair of wires transition conductor extending to one end of the slot is electrically connected to a flat conductive plate disposed along one end surface of the tooth, the other end of both sides of the slot A pair of lead conductor plates electrically connected to the ends of the pair of strand transition conductors extending to the side and disposed along the other end surface of the teeth ,
A rotary electric motor characterized in that the strands constituting each of the pair of strand transition conductors are shifted by 180 degrees. A rotor fixed coaxially to the rotation axis;
The stator core is disposed so as to surround the rotor and teeth are arranged at an equiangular pitch in the circumferential direction so as to define a slot opening on the inner peripheral side, and the stator core is wound around the stator core A stator having a torque generating drive coil,
The torque generating drive coil has a one-turn phase coil wound around each of the teeth in a concentrated winding;
Each of the phase coils is formed by stacking a plurality of strands into a plurality of strands, and extends to both sides from the slot outer conductor portion disposed along one end surface of the tooth and the slot outer conductor portion. respectively strand transition conductor comprising a pair of slots in the conductor portions to be stored, the pair of slots in the conductor portion extending to the other end of both sides of the slot in each side of the slot sandwiching the teeth and And a pair of lead conductor plates disposed along the other end face of the teeth , respectively,
The strands constituting the strand transition conductor are shifted by 90 degrees in one of the pair of in-slot conductor portions, the position in the strand transition conductor is maintained in the outside conductor portion of the slot, and the pair of in-slot conductors A rotary electric motor characterized in that it is further shifted by 90 degrees on the other side of the portion and is shifted by 180 degrees as a whole. The rotor includes first and second magnetic bodies disposed at an equiangular pitch in the circumferential direction on the outer periphery of a cylindrical base portion having salient poles each having a rotation shaft insertion hole at an axial center position. A semi-salient pitch is shifted in the circumferential direction and arranged coaxially at a predetermined interval in the axial direction, and the rotation shaft is inserted into and fixed to the rotation shaft insertion hole.
The stator iron core is disposed so as to surround the first magnetic body, and first teeth are arranged at an equiangular pitch in the circumferential direction so as to define a first slot opened to the inner circumferential side. Second teeth are arranged at an equiangular pitch in the circumferential direction so as to define a stator core and a second slot that opens to the inner circumferential side, and spaced apart from the first stator core by a predetermined interval in the axial direction. And a second stator core disposed so as to surround the second magnetic body with the second teeth axially opposed to the first teeth,
Each of the phase coils is wound in a concentrated winding around a pair of the first tooth and the second tooth facing in the axial direction,
Further, the field magnetomotive force generating coil is wound around the rotating shaft into a cylindrical shape and is interposed between the first stator core and the second stator core. The rotary motor according to claim 1 or 2, characterized in that   The element wire is composed of a conductive wire, an insulating oxide film layer covered with the conductive wire, and a ground insulating layer formed by coating an insulating resin on the oxide film layer. The rotary electric motor according to any one of claims 1 to 3.   The rotary electric motor according to any one of claims 1 to 3, wherein the element wire is an alumite-treated electric wire.

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