JP2017184475A - Motor device and manufacturing method for motor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor device improved in workability in fitting stator wiring to a stator iron core, while employing a configuration in which a coil end of a coil composing the stator wiring extends from a groove-opening-side position of a certain slot of a stator iron core to a groove-bottom-side position of another slot.SOLUTION: A motor device (a three-phase rotary electric machine 1) comprises: a stator 2 having a stator iron core 4 with a plurality of slots S1 to S48, and stator wiring 5 to which a plurality of coils 53U, 53V, 53W, 54U, 54V, 54W are connected; and a movable element (rotor 3) with magnetic pole pairs (34N, 34S). Each of the coils 53U, 53V, 53W, 54U, 54V, 54W has a pair of coil sides and a pair of coil ends. At least coil pitches or the numbers of winds are different in type. The coil ends are arranged so as to extend from a groove-mouth-side position 44 of one of a pair of slots to the groove-bottom-side position 45 of the other of the pair of the slot.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a motor device including a stator having a stator iron core and a stator winding, and a mover having a magnetic pole pair, and a method for manufacturing the motor device.

  Patent Documents 1 and 2 are disclosed as technical examples related to the motor device. The brushless DC motor of Patent Document 1 is characterized in that a stator winding constituted by a plurality of stages is provided in a slot of a stator (stator). According to this, the height of the end coil can be reduced to reduce the size. Patent Document 2 discloses a stator in which coils are spirally overlapped when viewed from the end face of a stator core (stator iron core), and the loops of the spirally overlapped coils are in the radial direction. Two or more layers are stacked. According to this, it is said that the operation | work which inserts a coil in a slot can be performed with a machine.

  In the technical examples of Patent Documents 1 and 2, the coil end located outside the slot extends spirally. In other words, the coil end extends from the position on the groove opening side of a certain slot to the position on the groove bottom side of another slot. In addition, a configuration is also known in which the coil ends cross concentrically between positions on the groove opening side of the slot and positions on the groove bottom side. In the configuration in which the coil ends are spirally formed, the shapes and the arrangement positions of the plurality of coils are equalized as compared with the configuration in which the coil ends are concentric. This achieves excellent performance in terms of noise and vibration reduction and efficiency improvement.

JP-A-10-28346 JP 2008-271720 A

  By the way, in the technical examples of Patent Documents 1 and 2, it takes time and labor to install a plurality of coils constituting the stator windings in the slots of the stator iron core, thereby increasing the manufacturing cost. More specifically, in a configuration in which the coil ends are concentrically isolated, the coils may be sequentially assembled from the coil at the groove bottom side position of the slot to the coil at the groove opening side position. On the other hand, in the configuration in which the coil ends are spirally formed, when a plurality of coils are sequentially assembled in the circumferential direction, the coil incorporated at the beginning becomes an obstacle and the coil at the end cannot be incorporated. For this reason, for example, only one coil end of all the coils is first incorporated in the groove bottom side position, and then the other coil end is incorporated in the groove opening side position. Therefore, it takes two times and the number of assembling work increases.

  In addition, when adopting a configuration in which the coil end extends in a spiral shape, there are various variations in the types and arrangement positions of the coils constituting the stator winding. Therefore, it is preferable to adopt a coil configuration of the stator winding suitable for reducing the manufacturing cost, making the coil end compact, improving the performance, and the like. In addition, when considering manufacturing costs, not only the material costs for the stator core and stator windings, but also the number of man-hours for assembling coils and the required number of interphase insulating papers to be inserted between coils of different phases are included. I need to think about it.

  The present invention has been made in view of the above-mentioned problems of the background art, and the coil end of the coil constituting the stator winding is moved from the groove opening side position of a certain slot of the stator iron core to the groove of another slot. An object to be solved is to provide a motor device that improves the workability of the work of incorporating the stator winding into the stator core while adopting the configuration extending over the bottom side position, and a method of manufacturing the motor device. .

  A motor device according to a first aspect of the present invention for solving the above-described problems is a stator iron core having a plurality of slots each having a groove shape and having a groove opening and a groove bottom, and wound around each of the plurality of slots. A stator having a stator winding to which a plurality of coils are connected, a mover having a magnetic pole pair composed of an N magnetic pole and an S magnetic pole, and supported rotatably or movable with respect to the stator; The plurality of coils are wound around a pair of slots among the plurality of slots, respectively, and a pair of coil sides received in the pair of slots, and the pair of coils. A pair of coil ends that connect the ends of the coil sides, and at least one of the coil pitch and the number of windings between the pair of coil sides is different from each other. It is a plurality of types, and each of the pair of coil end is arranged from one of the groove opening portion side position of the pair of slots so over the other groove bottom positions of the pair of slots.

  The motor device according to claim 3 is connected to a stator core having a plurality of slots each having a groove shape and a groove opening portion and a groove bottom portion, and a plurality of coils respectively wound around the plurality of slots. A motor device comprising: a stator having a stator winding; and a mover having a magnetic pole pair consisting of an N magnetic pole and an S magnetic pole and supported rotatably or movable relative to the stator. The number of slots per phase obtained by dividing the number of the plurality of slots of the stator core by the total number of magnetic poles of the N magnetic pole and the S magnetic pole, and further dividing by the number of phases of the stator winding Is an integer greater than or equal to 2, and the plurality of coils are wound around a pair of slots among the plurality of slots, respectively, and a pair of coil sides received in the pair of slots, and the pair of coil sizes. A pair of coil ends that connect the ends of each of the coil ends, and the coil pitch between the pair of coil sides and the number of windings are equal to each other, and In a rotational phase or a specific movement position, it is an aggregated configuration facing one of the N magnetic pole and the S magnetic pole, and each of the pair of coil ends is located from one groove opening side position of the pair of slots. It arrange | positioned so that the other groove bottom side position of the said pair of slot might be crossed.

  The motor device according to claim 5 is connected to a stator core having a plurality of slots each having a groove shape and a groove opening portion and a groove bottom portion, and a plurality of coils wound respectively in the plurality of slots. A motor device comprising: a stator having a stator winding; and a mover having a magnetic pole pair consisting of an N magnetic pole and an S magnetic pole and supported rotatably or movable relative to the stator. The number of slots per phase obtained by dividing the number of the plurality of slots of the stator core by the total number of magnetic poles of the N magnetic pole and the S magnetic pole, and further dividing by the number of phases of the stator winding And the plurality of coils are each composed of an even number of divided coils that are equal in number of windings and connected in series, and the even number of divided coils are a pair of slots among the plurality of slots. In A pair of coil sides that are respectively wound and housed in the pair of slots, and a pair of coil ends that connect ends of the pair of coil sides, and the pair of coil sides Each of the coil ends is arranged so as to extend from one groove opening side position of the pair of slots to the other groove bottom side position of the pair of slots, and the half of the even number of divided coils is the groove opening of the slot. Is arranged close to one of the groove portion and the groove bottom portion, and has a collective configuration facing one of the N magnetic pole and the S magnetic pole at a specific rotational phase or a specific movement position of the mover, The remainder of the even number of divided coils is disposed in proximity to the other of the groove opening and the groove bottom of the slot and has an electrical angle with respect to half of the even number of divided coils. It is arranged offset by 180 ° equivalent, has an aggregation configured to face the other of the N pole and the S pole in a particular rotational phase or specific moved position of the movable element.

  The motor device according to claim 7 is connected to a stator iron core having a plurality of slots each having a groove shape and a groove opening portion and a groove bottom portion, and a plurality of coils wound respectively in the plurality of slots. A stator having a stator winding and a mover having a magnetic pole pair composed of an N magnetic pole and an S magnetic pole and supported rotatably or movable relative to the stator. The plurality of coils are respectively wound around a pair of slots of the plurality of slots, and a pair of coil sides housed in the pair of slots and ends of the pair of coil sides are connected to each other. A pair of coil ends to be connected to each other, and a part of the plurality of coils is configured such that each of the pair of coil ends is connected to the pair of slots from a position on one groove opening side of the pair of slots. The remaining portions of the plurality of coils are arranged such that each of the pair of coil ends crosses the groove opening side positions or the groove bottom side positions of the pair of slots. Arranged.

  A method for manufacturing a motor device according to claim 12 is the method for manufacturing a motor device according to claim 7, wherein when the stator winding is incorporated in the stator iron core, the remaining portions of the plurality of coils. Are the beginning and end of installation.

  According to the motor device of the first, third, and fifth aspects of the present invention, the coil end of the coil constituting the stator winding is moved from the groove opening side position of a certain slot of the stator iron core to the groove bottom of another slot. The configuration over the side position is adopted, and the shape and arrangement position of the coil are equalized in three phases. Therefore, compared with the prior art in which the coil ends are concentrically isolated, excellent performance in terms of reducing noise and vibration and improving efficiency is realized. Moreover, both coil sides can be assembled together with all the coils, and the time and effort required to reassemble the assembled coil side outside the slot and then reassemble it is limited to the first few coils. Therefore, the labor of assembling work can be reduced as compared with the prior art, and the workability of assembling the stator winding into the stator core is improved.

  According to the motor device of the seventh aspect of the present invention, it is not necessary to take the trouble of twice assembling the assembled coil side outside the slot and then reassembling it. Therefore, the workability of the work of incorporating the stator winding into the stator iron core is significantly improved as compared with the prior art.

  According to the motor device manufacturing method of the twelfth aspect, the same effect as that of the motor device of the seventh aspect is produced.

It is a front view which shows typically the whole structure of the three-phase rotary electric machine which is a motor apparatus of 1st Embodiment, and has shown the range of 360 degrees of the electrical angle seen from the extension direction of an axis. It is the figure which looked at the inner peripheral side of the stator from the axis line, and the cylindrical surface is shown flattened. It is the connection diagram which showed an example of the connection method of a three-phase stator winding. It is the figure of an example which simplified and displayed a part of structure of the substantially rotational symmetry shape of a stator and a rotor, planarizing. It is the figure which showed typically the coil structure of the stator of the three-phase rotary electric machine of 1st Embodiment. It is the figure which showed typically the 2nd floor arrangement | positioning of the coil end of the U-phase long-pitch winding coil and U-phase short-pitch winding coil which comprise a U-phase pole pair coil. FIG. 5 is a diagram showing a simplified coil to be incorporated first in the assembling work of the stator winding. FIG. 5 is a diagram showing a state in which the coil side of a coil that has already been incorporated is once taken out of the slot immediately before the last coil is incorporated in the assembly work of the stator winding. It is a figure which shows the state immediately after incorporating the last coil in the assembly | attachment operation | work of a stator winding | coil. It is a figure which shows the alternative method which can reduce the quantity of the coil side once taken out of a slot rather than FIG. It is JJ arrow sectional drawing of FIG. 5 which shows typically the cross-sectional shape of the coil end just after an assembly | attachment. It is sectional drawing which shows typically the cross-sectional shape of the coil end after finishing the shaping work of a coil end, and the mounting | wearing operation | work of interphase insulation paper. It is a figure which shows the example which concerns on the three-phase rotary electric machine of 1st prior art, and the coil ends of the coil which comprises a stator are arrange | positioned concentrically. It is a figure which relates to the 3 phase rotary electric machine of 2nd prior art, and is a figure which illustrates typically the coil structure by which the pole pair coil of the stator was made into the distribution structure. It is a figure explaining the method of the assembly | attachment operation | work of the stator coil | winding in 2nd prior art. It is a figure which illustrates typically the coil composition of the stator of a 2nd embodiment. It is a figure which illustrates typically the coil structure of the stator of 3rd Embodiment. It is the figure which showed typically the 2nd floor arrangement | positioning of the coil end of the U-phase long-pitch winding coil and U-phase short-pitch winding coil which comprise a U-phase pole pair coil. It is a figure which illustrates typically the coil structure of the stator of 4th Embodiment. It is the figure which showed typically the U phase 1st short winding coil and U phase 2 short winding coil which comprise a U phase pole pair coil. It is a figure which illustrates typically the coil structure of the stator of 5th Embodiment. It is the figure which showed typically the 3rd floor arrangement | positioning of the coil end of the U-phase long-pitch winding coil, U-phase 1st short-pitch winding coil, and U-phase 2nd short-pitch winding coil which comprise a U-phase pole pair coil. It is a figure which illustrates typically the coil structure of the stator of 6th Embodiment. It is the figure which showed typically the 2nd floor arrangement | positioning of the coil end of the U-phase 1st-3rd short winding coil | winding which comprises a U-phase pole pair coil. It is a figure which illustrates typically the coil structure of the stator of 7th Embodiment. FIG. 5 is a diagram showing a simplified coil to be incorporated first in the assembling work of the stator winding. FIG. 5 is a diagram showing a state in which the coil side of a coil that has already been incorporated is once taken out of the slot immediately before the last coil is incorporated in the assembly work of the stator winding. It is a figure which shows the state immediately after incorporating the last coil in the assembly | attachment operation | work of a stator winding | coil. It is a figure which shows the alternative method which can reduce the quantity of the coil side once taken out of a slot rather than FIG. It is KK arrow sectional drawing of FIG. 25 which shows typically the cross-sectional shape of the coil end immediately after an assembly | attachment. It is sectional drawing which shows typically the cross-sectional shape of the coil end after finishing the shaping work of a coil end, and the mounting | wearing operation | work of interphase insulation paper. It is a figure which illustrates typically the coil structure of the stator of 8th Embodiment. It is a figure which illustrates typically the coil structure of the stator of 9th Embodiment. It is a figure which illustrates typically the coil structure of the stator of 10th Embodiment.

<First Embodiment>
The present invention can be implemented by both a rotating electrical machine in which the stator has a rotationally symmetric shape and a linear motor in which the stator has a linear shape. In the following, embodiments of the rotating electrical machine will be mainly described, and supplementary explanations of the embodiments of the linear motor will be given as appropriate. First, with reference to FIGS. 1-4, the whole structure of the three-phase rotary electric machine 1 which is a motor apparatus of 1st Embodiment of this invention is demonstrated typically.

  The three-phase rotating electrical machine 1 of the first embodiment is mounted on, for example, a hybrid vehicle. The on-vehicle three-phase rotating electrical machine 1 operates as a motor to drive the vehicle, and performs regenerative power generation by operating as a generator during braking. FIG. 1 is a front view schematically showing the overall configuration of the three-phase rotating electrical machine 1 that is the motor device of the first embodiment, and shows a range of 360 ° of the electrical angle as viewed from the extending direction of the axis AX. . The three-phase rotating electrical machine 1 includes a stator 2 on the outer peripheral side and a rotor 3 corresponding to a mover on the inner peripheral side. The three-phase rotating electrical machine 1 is configured as an inner rotor type radial air gap type that is generally rotationally symmetric about an axis AX.

  The stator 2 has a stator core 4 and a stator winding 5 (see FIG. 3). The stator core 4 is formed in a substantially cylindrical shape. The stator iron core 4 can be formed by laminating a plurality of thin iron core materials formed by punching electromagnetic steel sheets such as silicon steel sheets in the axis AX direction. The stator iron core 4 has an annular back yoke portion 41 that circulates on the outer peripheral side, and teeth 42 that protrude from the back yoke portion 41 inward in the circumferential direction and are arranged in the circumferential direction. The teeth 42 may have an unillustrated distal end enlarged portion that expands the surface area of the distal end where the magnetic pole is formed.

  A groove-shaped slot 43 is formed between each tooth 42. The slot 43 extends in the direction of the axis AX, and has a groove depth that reaches from the groove opening 48 (groove entrance) to the groove bottom 49 in the radial direction. A space region on the radially inner side near the groove portion 48 in the internal space of the slot 43 is a groove portion side position 44. A space region on the radially outer side near the groove bottom 49 in the internal space of the slot 43 is a groove bottom side position 45. The slot part 48 of the slot 43 may be narrowed by the tip enlarged part of the tooth 42 described above. Further, the slot 43 may be a closed slot in which the groove portion 48 is not open.

  The number of teeth 42 and the number of slots 43 is 48, respectively. The twelve slots 43 shown in FIG. 1 are called the first slot S1 to the twelfth lot S12 in the clockwise direction in the drawing. Furthermore, the slots 43 in a range not shown are called the thirteenth slot S13 to the forty-eighth slot S48 in the clockwise direction.

  The stator winding 5 is configured by connecting a plurality of coils. In FIG. 1, one coil 51 is illustrated, and actually, a plurality of coils are arranged to overlap in the radial direction. The coil 51 is formed by, for example, winding a conductor in which the surface of a copper wire is covered with an insulating layer such as enamel. The cross-sectional shape of the conductor is not particularly limited, and an arbitrary shape such as a round line or a square line can be employed. Moreover, you may use the parallel conductor which combined the some thin strand. By using the parallel conductor, eddy current loss generated in the stator winding 5 can be reduced as compared with the case of a single conductor, and the efficiency is improved. Furthermore, since the force required for bending can be reduced, winding workability and later-described built-in workability are improved.

  The rotor 3 is coaxially disposed on the inner peripheral side of the stator 2 with a slight air gap AG interposed therebetween. The rotor 3 includes a rotor iron core 31, an output shaft 32, and four pairs of permanent magnets 33N and 33S. The rotor iron core 31 is formed in a substantially cylindrical shape. The rotor iron core 31 can be formed by laminating a plurality of thin iron core materials formed by punching electromagnetic steel sheets such as silicon steel sheets in the axis AX direction. An output shaft 32 is integrally provided on the inner peripheral side of the rotor iron core 31. The output shaft 32 is rotatably supported by a bearing provided in an unillustrated casing.

  Eight embedded holes are formed side by side in the circumferential direction at a position close to the outer peripheral surface of the rotor iron core 31. A total of four pairs of permanent magnets 33N and 33S are embedded in the embedded holes. The permanent magnets 33 </ b> N and 33 </ b> S have magnetic poles arranged in a direction toward the outer periphery of the rotor iron core 31. As a result, four pairs of magnetic pole pairs composed of the N magnetic pole 34N and the S magnetic pole 34S are formed on the outer peripheral surface of the rotor iron core 31. The total number of magnetic poles of the N magnetic pole 34N and the S magnetic pole 34S is nm = 8. The central angle θ occupied by the N magnetic pole 34N and the S magnetic pole 34S is 45 ° of the mechanical angle, respectively. Therefore, one magnetic pole pair composed of the N magnetic pole 34N and the S magnetic pole 34S occupies 90 ° of the mechanical angle and 360 ° of the electrical angle.

  FIG. 2 is a view of the inner peripheral side of the stator 2 as viewed from the axis AX, and the cylindrical surface is shown as a flat surface. In FIG. 2, the coil 51 is schematically shown as a hexagon. The coil 51 is wound through the pair of fifth and eleventh slots S5 and S11, and the number of windings Nw is not limited. The parts accommodated in the fifth and eleventh slots S5 and S11 of the coil 51 are called coil sides 511, respectively. In addition, the portions where the ends of the pair of coil sides 511 are connected to each other outside the slot 43 are referred to as coil ends 512, respectively. The actual shape of the coil end 512 is slightly different from the two sides of the hexagon shown.

  As shown in FIG. 1, each of the pair of coil ends 512 of the coil 51 is disposed so as to extend from the groove opening side position 44 of the fifth slot S5 to the groove bottom side position 45 of the eleventh slot S11. Obviously, each of the pair of coil ends 512 crosses the same position of the slot 43. Therefore, hereinafter, “each of the pair of coil ends” is abbreviated as “coil end is”, and “arranged so as to cross” is abbreviated as “crossing”.

  FIG. 3 is a connection diagram showing an example of a method for connecting the three-phase stator windings 5. In the illustrated example, the U-phase, V-phase, and W-phase stator windings 5U, 5V, and 5W are Y-connected, and may be Δ-connected. The U-phase, V-phase, and W-phase stator windings 5U, 5V, 5W are each configured by parallel connection of four sets of U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W, You may comprise by series connection. The U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W are wound over a slot 43 in an angular range facing one magnetic pole pair. Four sets of U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of each phase are arranged on the stator core 4 in a rotationally symmetrical manner at a mechanical angle of 90 °. Each of the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W is configured by connecting a plurality of coils in series.

  Here, the number N1 of slots in each pole of the three-phase rotating electrical machine 1 is obtained by dividing the number ns = 48 of the slots 43 by the total number of magnetic poles nm = 8, and becomes 6. The number N2 of slots per pole of each pole of the three-phase rotating electrical machine 1 is obtained by dividing the number of slots N1 per pole by the number of phases 3 and becomes 2. That is, the three-phase rotating electrical machine 1 has an integer slot configuration.

  In addition, the coil 51 illustrated in FIGS. 1 and 2 has a coil pitch Pc = 6 because the pair of coil sides 511 are wound apart by the six portions of the slot 43. The coil 51 is a full-pitch winding coil having a coil pitch Pc equal to the number N1 of slots per pole. Although description by drawing is abbreviate | omitted, the coil whose coil pitch Pc is longer than the number N1 of poles per pole is a long-pitch coil, and the coil whose coil pitch Pc is shorter than the number N1 of slots per pole is a short-pitch coil. is there.

  In the following description, the configurations of the stator 2 and the rotor 3 described with reference to FIGS. 1 and 2 are simplified and displayed as shown in FIG. FIG. 4 is a diagram showing an example in which a part of the substantially rotationally symmetric configuration of the stator 2 and the rotor 3 is displayed in a simplified manner while being planarized. “Cross mark cross” and “circle mark dot” shown in the coil 51 in FIG. 4 indicate the winding direction R of the conductor (counterclockwise direction in FIG. 2). That is, “cross on circle” indicates that the conductor is wound from the front side to the back side in FIG. 4, and “dot on circle” indicates that the conductor is wound from the back side to the front side in FIG. It shows that it is disguised.

  The description shifts to the coil configuration of the stator 2 of the three-phase rotating electrical machine 1. FIG. 5 is a diagram schematically illustrating the coil configuration of the stator 2 of the three-phase rotating electrical machine 1 according to the first embodiment. FIG. 5 shows an angular range wider than one magnetic pole pair, that is, an angular range wider than an electrical angle of 360 °. In addition to FIG. 5, in each of the following figures, the U-phase coil is indicated by a solid line, the V-phase coil is indicated by a one-dot chain line, and the W-phase coil is indicated by a broken line.

  In the first embodiment, the U-phase pole pair coil 52U includes a U-phase long-pitch coil 53U and a U-phase short-pitch coil 54U connected in series. Similarly, the V-phase pole pair coil 52V is composed of a V-phase long-pitch coil 53V and a V-phase short-pitch coil 54V connected in series, and the W-phase pole pair coil 52W is a W-phase long-pitch coil connected in series. It consists of a coil 53W and a W-phase short-pitch coil 54W. The long pitch winding coils 53U, 53V, 53W have a coil pitch Pc = 7, and the short pitch winding coils 54U, 54V, 54W have a coil pitch Pc = 5. The long winding coils 53U, 53V, 53W and the short winding coils 54U, 54V, 54W have the same number of windings Nw1. Further, the winding directions R of the long-pitch coils 53U, 53V, 53W and the short-pitch coils 54U, 54V, 54W also coincide with each other (see FIG. 6).

  The coil arrangement position will be described in detail. The coil end of the U-phase long-pitch winding coil 53U extends from the groove opening side position 44 of the first slot S1 to the groove bottom side position 45 of the eighth slot S8. The coil end of the U-phase short winding coil 54U extends from the groove opening side position 44 of the second slot S2 to the groove bottom side position 45 of the seventh slot S7.

  The arrangement positions of the V-phase coils 53V and 54V are obtained by shifting the arrangement positions of the U-phase coils 53U and 54U by four slots in the right direction in FIG. The coil end of the V-phase long-pitch winding coil 53V extends from the groove opening side position 44 of the fifth slot S5 to the groove bottom side position 45 of the twelfth slot S12. The coil end of the V-phase short-pitch coil 54V extends from the groove opening side position 44 of the sixth slot S6 to the groove bottom side position 45 of the eleventh slot S11.

  The arrangement positions of the W-phase coils 53W and 54W are obtained by shifting the arrangement positions of the U-phase coils 53U and 54U by 8 slots in the right direction in FIG. The coil end of the W-phase long-pitch winding coil 53W extends from the groove opening side position 44 of the ninth slot S9 to the groove bottom side position 45 of the sixteenth slot S16. The coil end of the W-phase short-pitch coil 54W extends from the groove opening side position 44 of the tenth slot S10 to the groove bottom side position 45 of the fifteenth slot S15.

  The coil end of another W-phase long-pitch winding coil 53W extends from the groove opening side position 44 of the 45th slot S45 to the groove bottom side position 45 of the fourth slot S4, which cannot be seen in FIG. The coil end of another W-phase short-pitch coil 54W extends from the groove-portion side position 44 of the 46th slot S46, which cannot be seen in FIG. 5, to the groove bottom-side position 45 of the third slot S3.

  In the first embodiment, the stator winding 5 includes twelve long-pitch coils 53U, 53V, 53W, and twelve short-pitch coils 54U, 54V, 54W. In each of the 48 slots 43 (S1 to S48), only one coil side of one coil 53U, 53V, 53W, 54U, 54V, 54W is disposed. Conversely, the long-pitch coils 53U, 53V, 53W and the short-pitch coils 54U, 54V, 54W are full coils in which each of the coil sides occupies the entire slot 43.

  Further, as shown in FIG. 5, in a specific rotational phase of the rotor 3, the U-phase long-pitch coil 53U and the U-phase short-pitch coil 54U are opposed to the N magnetic pole 34N. This means that the entire N magnetic pole 34N is positioned within the angular range occupied by the U-phase long-pitch coil 53U, and the entire U-phase short-pitch coil 54U is positioned within the angular range occupied by the N magnetic pole 34N. Means that. Furthermore, even if the coil and the magnetic pole do not have a complete angle range inclusive relationship, a positional relationship in which most of the angle range occupied by both overlaps each other is defined as “opposing”. The point that the long-pitch coils 53V and 53W and the short-pitch coils 54V and 54W are opposed to one magnetic pole also applies to the V phase and the W phase in different rotational phases of the rotor 3. That is, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W are arranged so as to be opposed to one of the magnetic poles, in other words, have a concentrated configuration. .

  The coil end of the U-phase long-pitch winding coil 53U and the coil end of the U-phase short-pitch winding coil 54U are arranged close to each other in parallel. FIG. 6 is a diagram schematically showing the second floor arrangement of coil ends of the U-phase long-pitch coil 53U and the U-phase short-pitch coil 54U constituting the U-phase pole pair coil 52U. As shown in the drawing, the coil end 532 of the U-phase long-pitch winding coil 53 </ b> U is disposed away from the teeth 42. On the other hand, the coil end 542 of the U-phase short-pitch coil 54U is disposed between the coil end 532 of the U-phase long-pitch coil 53U and the teeth 42. That is, the coil ends 532 and 542 of both the coils 53U and 54U are arranged in two stories in the direction of the axis AX. Similarly, the coil ends of the two V-phase coils 53V and 54V and the coil ends of the two W-phase coils 53W and 54W are also arranged in two stories in the axis AX direction.

  In addition, the stator of a linear motor is made into the linear shape which comprises a track | orbit. A large number of slots 43 are formed along the track, and a large number of U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W are arranged along the track. On the other hand, the mover of the linear motor is a linear mover supported so as to be movable along a track. In the linear slider, magnetic pole pairs (four magnetic pole pairs in the example of FIG. 5) are linearly arranged. The configuration of the stator of the linear motor can be considered in the same manner as the three-phase rotating electrical machine 1 even if there is a difference between the rotationally symmetric shape and the linear shape. That is, FIG. 5 also serves as a simplified view of the linear motor stator and the linear mover (the same applies to the second and subsequent embodiments). However, the number N1 of slots per pole and the number of slots N2 per pole per phase of the linear motor are obtained based on the number ns of slots 43 in the range facing the linear slider (four pairs of magnetic pole pairs in the example of FIG. 5). .

  Next, regarding the three-phase rotating electrical machine 1, a method of assembling the stator winding 5 into the slot 43 of the stator core 4 will be described. FIG. 7 is a diagram showing, in a simplified manner, a coil to be incorporated first in the assembling work of the stator winding 5. FIG. 8 is a diagram illustrating a state in which the coil side of the coil that has already been incorporated is once out of the slot 43 immediately before the last coil is assembled in the assembling work of the stator winding 5. FIG. 9 is a diagram showing a state immediately after the last coil is assembled in the assembling work of the stator winding 5. FIG. 10 is a diagram showing an alternative method that can reduce the number of coil sides that are once taken out of the slot 43 as compared with FIG.

  The four long-pitch coils 53U, 53V, 53W and the short-pitch coils 54U, 54V, 54W of each phase constituting the stator winding 5 are first used as winding jigs simulating the stator core 4. A conductor is wound and formed respectively. Then, as indicated by an arrow P1 in FIG. 7, the long-pitch coils 53U, 53V, 53W and the short-pitch coils 54U, 54V, 54W are assembled in order from the left side to the right side in the drawing. However, the coil at the beginning and end of assembly is not particularly limited.

  Here, the first set of W-phase long-pitch winding coil 53W and W-phase short-pitch winding coil 54W are first incorporated, and the fourth set of V-phase long-pitch winding coil 53V and V-phase short-pitch winding coil 54V are incorporated at the end. A case will be described as an example. In assembling work of the stator winding 5, an assembling jig can be used as appropriate.

  As shown in FIG. 7, the operator first places the pair of coil sides of the first set of W-phase long-pitch coil 53W and W-phase short-pitch coil 54W in the ninth and sixteenth slots S9, S16, respectively. And inserted into the tenth and fifteenth slots S10 and S15. The operator secondly connects the pair of coil sides of the first set of U-phase long-pitch coil 53U and U-phase short-pitch coil 54U to the thirteenth and twentieth slots S13, S20, and the fourteenth and Inserted into the nineteenth slots S14 and S19. The operator thirdly connects the pair of coil sides of the first set of V-phase long-pitch winding coil 53V and V-phase short-pitch winding coil 54V to the 17th and 24th slots S17, S24, and 18th and It is inserted into the 23rd slots S18 and S23 and incorporated. Hereinafter, the operator incorporates the long winding coils 53U, 53V, 53W and the short winding coils 54U, 54V, 54W into the slot 43 in order from the left side to the right side in FIG.

  Here, since the coil ends of the long-pitch coils 53U, 53V, and 53W are disposed across the coil ends of the short-pitch coils 54U, 54V, and 54W, a two-story arrangement of the coil ends is possible. According to this, since the short-pitch coils 54U, 54V, 54W and the long-pitch coils 53U, 53V, 53W can be held in a nested manner, both coils can be easily assembled together and the assembling workability is good. Become.

  The operator 11thly connects the pair of coil sides of the fourth set of U-phase long-pitch winding coil 53U and U-phase short-pitch winding coil 54U to the first and eighth slots S1, S8, and second and It is inserted into the seventh slots S2 and S7 and incorporated. The fourth set of the V-phase long-pitch winding coil 53V and the V-phase short-pitch winding coil 54V to be incorporated into the last twelfth are installed in the fifth and sixth slots S5 and S6 at the groove portion side position 44 and the twelfth and sixth 11 slot S12, between the groove bottom side position 45 of S11. However, the coil side on one side of the first set of W-phase long-pitch winding coil 53W and W-phase short-pitch winding coil 54W has already been incorporated into the groove portion side position 44 of the ninth and tenth slots S9, S10, It interferes with installation work.

  Therefore, as shown in FIG. 8, the operator temporarily sets the coil side on one side of the first set of W-phase long-pitch winding coil 53 </ b> W and W-phase short-pitch winding coil 54 </ b> W once to the ninth and tenth sets. It goes out of the slots S9 and S10. At this time, the coil side on one side of the first set of U-phase long-pitch winding coil 53U and U-phase short-pitch winding coil 54U that have already been installed may interfere with the chain. Furthermore, the coil side on one side of the first set of the V-phase long-pitch winding coil 53V and the V-phase short-pitch winding coil 54V that are already installed may be in the way.

  The worker once puts out the coil side within the range that gets in the way to the outside of the slot 43. In the example of FIG. 8, from the ninth, tenth, thirteenth, fourteenth and seventeenth slots S9, S10, S13, S14, S17, the coil sides on one side of the coils 53W, 54W, 53U, 54U, 53V are respectively Once out of the slot 43.

  Thus, as shown in FIG. 9, the operator can connect the pair of coil sides of the fourth set of V-phase long-pitch winding coil 53V and V-phase short-pitch winding coil 54V to the fifth and twelfth slots S5, S12 and the sixth and eleventh slots S6 and S11 can be inserted and incorporated. Next, the operator re-assembles the coil side on one side of the coils 53W, 54W, 53U, 54U, and 53V once taken out of the slot 43 into the original slot 43 (see arrows M1 and M2).

  In addition, when the rigidity of the coil is relatively small and temporary deformation is allowed, the operator can adopt an alternative method shown in FIG. 10 instead of FIG. In this alternative method, the operator temporarily puts the coil side on one side of the first set of W-phase long-pitch winding coil 53W and W-phase short-pitch winding coil 54W outside the ninth and tenth slots S9 and S10. put out. Further, the worker temporarily bends the W-phase long-pitch coil 53W and the W-phase short-pitch coil 54W so that the coil side on one side is not located between the fifth slot S5 and the twelfth slot S12. . An operator temporarily takes out the coil side within the range that gets in the way to the outside of the slot 43 and temporarily performs bending.

  In the example of FIG. 10, from the ninth, tenth, and thirteenth slots S9, S10, S13, a coil on one side of the W-phase long-pitch coil 53W, the W-phase short-pitch coil 54W, and the U-phase long-pitch coil 53U The side is once taken out of the slot 43 and bent. Thus, the operator can connect the fifth and twelfth slots S5 and S12, and the sixth and sixth slots of the pair of coil sides of the fourth set of the V-phase long-pitch winding coil 53V and the V-phase short-pitch winding coil 54V, respectively. 11 slots S6 and S11 can be inserted and incorporated. Next, the operator restores the bend to the original shape while re-installing the coil side on one side of the coils 53W, 54W, 53U once taken out of the slot 43 into the original slot 43. According to the alternative method, the number of coil sides that are once taken out of the slot 43 is reduced from five in FIG. 8 to three in FIG.

  After completing the assembly of the coil, the worker performs an incidental work. The incidental work includes a coil end shaping work, an interphase insulating paper mounting work, a coil connection work, and the like. FIG. 11 is a cross-sectional view taken along the line JJ in FIG. 5 schematically showing the cross-sectional shape of the coil end immediately after assembly. FIG. 12 is a cross-sectional view schematically showing the cross-sectional shape of the coil end after the coil end shaping work and the interphase insulating paper mounting work. FIGS. 11 and 12 illustrate the case where the number of windings Nw1 of the long-pitch coils 53U, 53V, 53W and the short-pitch coils 54U, 54V, 54W is Nw1 = 8 turns.

  As shown in FIG. 11, the coil ends of the long-pitch coils 53U, 53V, 53W and the short-pitch coils 54U, 54V, 54W immediately after the assembly are arranged in the above-described two stories. For example, each coil end occupies one slot pitch in the groove width direction of the slot 43, and the conductors are arranged in two turns, and the conductors are arranged in four directions in the axis AX direction. There is a gap corresponding to 3 slot pitch between the different phases of the coil ends. Therefore, by effectively using this gap, the height HA of the coil end in the axis AX direction can be reduced.

  The operator can shape the conductor while maintaining the two-story arrangement of the coil ends, and can arrange the conductors for 8 turns in the 4-slot pitch of the slot 43 in the groove width direction. As a result, each coil end is flattened by extending in the groove width direction of the slot 43 with only one turn of the conductor in the axis AX direction. As a result of the shaping process, the cross-sectional shape of the coil end shown in FIG. 12 is obtained. The coil end height HB after the shaping can be reduced to approximately 25% of the coil end height HA immediately after assembly. Therefore, the disadvantage of the two-story structure that is not suitable for miniaturization can be eliminated, and the coil end can be made compact.

  During or at the end of the coil end shaping work, the operator performs the work of mounting the interphase insulating paper 9 between the different phases of the coil end. The interphase insulating paper 9 is necessary between the U-phase coils 53U and 54U and the V-phase coils 53V and 54V, and between the V-phase coils 53V and 54V and the W-phase coils 53W and 54W. Further, the interphase insulating paper 9 is also required between the W-phase coils 53W and 54W and the next U-phase coil 53U and coil 54U. Therefore, the required number of interphase insulating paper 9 is three per one magnetic pole pair.

  Thereafter, the operator performs a coil connection operation. An operator connects long-pitch coils 53U, 53V, and 53W and short-pitch coils 54U, 54V, and 54W in series to form U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W. Next, the operator connects the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of each phase in parallel, and the U-phase, V-phase, and W-phase stator windings, respectively. 5U, 5V, 5W. The operator also performs neutral point connections and three-phase phase end arrangements.

  Next, the operation of the three-phase rotating electrical machine 1 of the first embodiment will be described in comparison with two types of conventional techniques. FIG. 13 is a diagram illustrating an example in which the coil ends of the coils constituting the stator 2X are concentrically arranged in a three-phase rotating electrical machine according to the first prior art. The pole pair coil of the stator 2X of the first prior art has the same configuration as that of the first embodiment, but the arrangement position in the slot 43 is different. More specifically, the coil end of the U-phase long-pitch winding coil 53U crosses the groove bottom side positions 45 of the first and eighth slots S1 and S8. The coil end of the U-phase short-pitch coil 54U crosses the groove bottom side positions 45 of the second and seventh slots S2, S7.

  Further, the coil end of the V-phase long-pitch winding coil 53V crosses intermediate positions in the groove depth direction of the fifth and twelfth slots S5 and S12. The coil end of the V-phase short-pitch coil 54V crosses intermediate positions in the groove depth direction of the sixth and eleventh slots S6 and S11. The coil end of the W-phase long-pitch winding coil 53W crosses the groove portion side positions 44 of the ninth and sixteenth slots S9 and S16. The coil end of the W-phase short-pitch winding coil 54W crosses the groove portion side positions 44 of the tenth and fifteenth slots S10 and S15.

  In the first prior art, the length of the coil end of the pole pair coil is the longest in the U phase, which is the outermost peripheral arrangement, and is shortened in the order of the V phase and the W phase. The arrangement positions of the pole pair coils are also different from each other in three phases. For this reason, the characteristics of the U-phase, V-phase, and W-phase pole pair coils are not equalized, and it is difficult to achieve excellent performance. In another prior art, the size of the three-phase pole pair coil can be equalized. However, due to the limitation of the installation work, the pole pair coil of the other phase is changed to the largest pole pair coil of one phase. It is necessary to match. For this reason, the total length of the conductor is increased, the efficiency is lowered, and the pole pair coil is enlarged. On the other hand, in the first embodiment, the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W are equalized in shape and arrangement position in three phases, and can be reduced in size. For this reason, excellent performance in terms of reducing noise and vibration and improving efficiency is realized.

  FIG. 14 is a diagram schematically illustrating a coil configuration in which the pole pair coils of the stator 2Y are assigned to each other in the second prior art three-phase rotating electrical machine. The second conventional technique corresponds to the technique in which the coil ends disclosed in Patent Documents 1 and 2 are spirally formed. In the second prior art, each of the four pairs of pole pairs of each phase of the stator winding 5 is composed of two full-pitch coils of two layers each connected in series. The two full-pitch coils in each layer differ in arrangement position by one slot. Further, the arrangement positions of the first layer and the second layer differ by 6 slots. The full-pitch coils 55U, 55V, and 55W of each phase are one type with respect to the coil pitch Pc between the coil sides and the number of windings NwY, and the coil pitch Pc = 6. Further, the number NwY of windings of all-pitch winding coils 55U, 55V, 55W is half of the number Nw1 of windings of long-pitch winding coils 53U, 53V, 53W of the first embodiment.

  The coil ends of the two U-phase full-pitch coils 55U of the first layer are located from the groove-portion side position 44 of the first and second slots S1, S2 to the groove bottom-side position 45 of the seventh and eighth slots S7, S8. It crosses each. The coil ends of the two U-phase full-pitch coils 55U of the second layer are located from the groove-portion side position 44 of the seventh and eighth slots S7 and S8 to the groove bottom-side position 45 of the thirteenth and fourteenth slots S13 and S14. It crosses each. The winding direction of the U-phase full-pitch winding coil 55U is opposite between the first layer and the second layer.

  The arrangement position of the two V-phase full-pitch coils 55V in each of the two layers is obtained by shifting the arrangement position of the U-phase full-pitch coil 55U by four slots in the right direction in FIG. The coil ends of the two V-phase full-pitch winding coils 55V for each of the two layers are the eleventh, tenth, and fourth positions from the groove side positions 44 of the fifth, sixth, eleventh, and twelfth slots S5, S6, S11, S12. Crossing the groove bottom side position 45 of each of the 12th, 17th, and 18th slots S11, S12, S17, S18.

  The arrangement position of the two W-phase full-pitch coils 55W in each of the two layers is obtained by shifting the arrangement position of the U-phase full-pitch coil 55U by 8 slots in the right direction in FIG. The coil ends of the two W-phase full-pitch winding coils 55W in each of the two layers are arranged in the fifteenth, tenth, fourth, and fourth slots S9, S10, S3, and S4 from the groove side position 44. It extends to the groove bottom side position 45 of each of the sixteenth, ninth, and tenth slots S15, S16, S9, and S10.

  In the second prior art, the stator winding 5 is composed of a total of 48 full-pitch coils 55U, 55V, and 55W. In each of the 48 slots 43 (S1 to S48), the coil sides on one side of the two full-pitch coils 55U, 55V, and 55W are arranged. For example, in the seventh slot S7, the coil side of the first-phase U-phase full-pitch winding coil 55U is disposed at the groove bottom side position 45, and the coil side of the second-layer U-phase full-pitch winding coil 55U is on the groove opening side. Located at position 44. That is, the full-pitch coils 55U, 55V, and 55W are half coils in which the coil side occupies half of the slot 43.

  Further, as shown in FIG. 14, in the specific rotational phase of the rotor 3, the two U-phase full-pitch coils 55 </ b> U in the first layer are opposed to the N magnetic pole 34 </ b> N and U-phase full-pitch coil 55U faces S magnetic pole 34S. That is, the coils constituting the pole pair coil are arranged so as to be opposed to both the magnetic poles 34N and 34S, in other words, have a sorting configuration. Similarly, the coils constituting the V phase and the W phase are also distributed.

  FIG. 15 is a diagram for explaining a method of assembling the stator winding 5 in the second prior art. In the second prior art, the number of coils of the full-pitch winding coils 55U, 55V, and 55W is twice that of the first embodiment, and it is difficult to incorporate both coil sides at once. Therefore, the operator first incorporates only one coil side of all the full-pitch winding coils 55U, 55V, and 55W into the groove bottom side position 45 of the slot 43 (see arrow M3). Next, the operator gradually tilts all the full-pitch coils 55U, 55V, and 55W (see arrow M4), and sequentially incorporates the other coil side into the groove portion side position 44 of the slot 43. In the second prior art, the required number of interphase insulating papers 9 is six per magnetic pole pair.

  In the second prior art, all the full-pitch coils 55U, 55V, and 55W are separately assembled for each coil side, which is troublesome twice. On the other hand, in the first embodiment, the coil sides of all the long-pitch coils 53U, 53V, 53W and the short-pitch coils 54U, 54V, 54W can be incorporated together. Then, the time and effort required to bring the coil side out of the slot 43 and reassemble it is limited to a few coils at the beginning. Therefore, in the first embodiment, the workability of the work of incorporating the stator winding 5 into the slot 43 of the stator core 4 is improved. Further, the required number of interphase insulating papers 6 is six per one magnetic pole pair in the second prior art, and is halved to three in the first embodiment.

Second Embodiment
Next, the difference between the three-phase rotating electrical machine of the second embodiment and the first embodiment will be mainly described. In the second embodiment, the configuration of the rotor 3 and the shape of the stator core 4 are the same as those of the first embodiment, and the coil configuration of the stator 2A is different from that of the first embodiment. Therefore, also in the second embodiment, the number of slots per pole N1 = 6, the number of slots per pole per phase N2 = 2, and an integer slot configuration. FIG. 16 is a diagram schematically illustrating the coil configuration of the stator 2A of the second embodiment.

  In the second embodiment, each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W of each phase of the stator winding 5 is connected in series with long-pitch coils 56U and 56V. , 56W and short-pitch coil coils 57U, 57V, 57W. The long pitch winding coils 56U, 56V, and 56W have a coil pitch Pc = 7, and the short pitch winding coils 57U, 57V, and 57W have a coil pitch Pc = 5. The winding times Nw2 of the long winding coils 56U, 56V, 56W and the short winding coils 57U, 57V, 57W are equal to each other. The winding directions of the long-pitch coils 56U, 56V, 56W and the short-pitch coils 57U, 57V, 57W coincide with each other in the same layer, and the first layer and the second layer are opposite to each other. ing.

  The coil arrangement position will be described in detail. The coil end of the first layer U-phase long-pitch winding coil 56U extends from the groove opening side position 44 of the first slot S1 to the groove bottom side position 45 of the eighth slot S8. . The coil end of the first-layer U-phase short-pitch coil 57U extends from the groove opening side position 44 of the second slot S2 to the groove bottom side position 45 of the seventh slot S7.

  The coil end of the U-phase long-pitch winding coil 56U of the second layer extends from the groove portion side position 44 of the seventh slot S7 to the groove bottom portion position 45 of the fourteenth slot S14. The coil end of the second-layer U-phase short-pitch coil 57U extends from the groove opening side position 44 of the eighth slot S8 to the groove bottom side position 45 of the thirteenth slot S13.

  The arrangement positions of the V-phase coils 56V and 57V are obtained by shifting the arrangement positions of the U-phase coils 56U and 57U by four slots to the right in FIG. The coil end of the first-phase V-phase long-pitch winding coil 56V extends from the groove opening side position 44 of the fifth slot S5 to the groove bottom side position 45 of the twelfth slot S12. The coil end of the first-layer V-phase short-pitch coil 57V extends from the groove opening side position 44 of the sixth slot S6 to the groove bottom side position 45 of the eleventh slot S11.

  The coil end of the second-layer V-phase long-pitch winding coil 56V extends from the groove opening side position 44 of the eleventh slot S11 to the groove bottom side position 45 of the eighteenth slot S18. The coil end of the second-layer V-phase short-pitch coil 57V extends from the groove opening side position 44 of the twelfth slot S12 to the groove bottom side position 45 of the seventeenth slot S17.

  The arrangement positions of the W-phase coils 56W and 57W are obtained by shifting the arrangement positions of the U-phase coils 56U and 57U by eight slots to the right in FIG. The coil end of the W-phase long-pitch coil 56W of the first layer extends from the groove side portion position 44 of the ninth slot S9 to the groove bottom portion position 45 of the sixteenth slot S16. The coil end of the first-layer W-phase short-pitch coil 57W extends from the groove opening side position 44 of the tenth slot S10 to the groove bottom side position 45 of the fifteenth slot S15.

  The coil end of the second layer W-phase long-pitch winding coil 56W extends from the groove opening side position 44 of the fifteenth slot S15 to the groove bottom side position 45 of the twenty-second slot S22. The coil end of the second-layer W-phase short-pitch coil 57W extends from the groove opening side position 44 of the 16th slot S16 to the groove bottom side position 45 of the 21st slot S21.

  The coil end of another second-layer W-phase long-pitch winding coil 56W extends from the groove opening side position 44 of the third slot S3 to the groove bottom side position 45 of the tenth slot S10. The coil end of another second-layer W-phase short-pitch winding coil 57W extends from the groove opening side position S4 of the fourth slot S4 to the groove bottom side position 45 of the ninth slot S9.

  In the second embodiment, the stator winding 5 includes 24 long-pitch coils 56U, 56V, 56W and 24 short-pitch coils 57U, 57V, 57W. These coils 56 </ b> U, 56 </ b> V, 56 </ b> W, 57 </ b> U, 57 </ b> V, 57 </ b> W are half coils in which the coil side occupies half of the slot 43.

  Also, as shown in FIG. 16, in the specific rotational phase of the rotor 3, the U-phase long-pitch winding coil 56U and the U-phase short-pitch winding coil 57U of the first layer face the N magnetic pole 34N. On the other hand, the U-phase long-pitch winding coil 56U and the U-phase short-pitch winding coil 57U of the second layer face the S magnetic pole 34S. That is, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of the stator 2A have a distributed configuration.

  Furthermore, the U-phase long-pitch winding coil 56U and the U-phase short-pitch winding coil 57U of the first layer are arranged in two stories in the axis AX direction as in the first embodiment shown in FIG. . Similarly, the U-phase long-pitch winding coil 56U and the U-phase short-pitch winding coil 57U of the second layer are also arranged in two stories in the axis AX direction. Similarly, the two coils 56V, 57V, 56W, and 57W of the two layers of the V phase and the W phase are respectively arranged in two stories in the axis AX direction. In the second embodiment, the required number of interphase insulating papers 9 is 6 per magnetic pole pair.

  Here, FIG. 14 showing the second prior art and FIG. 16 showing the second embodiment will be compared. Then, it can be seen that the two U-phase full-pitch coils 55U are replaced with the long-pitch coil 53U and the short-pitch coil 54U in the first layer, so that the second embodiment is obtained. In the stator 2A of the second embodiment, the coil ends are arranged in two stories in the direction of the axis AX, so that the workability of assembling the stator winding 5 is better than that of the second prior art. Become.

<Third and fourth embodiments>
Next, the three-phase rotating electrical machine of the third and fourth embodiments will be described mainly with respect to differences from the first and second embodiments. In the third and fourth embodiments, the configuration of the rotor 3 is the same as that of the first embodiment, and the number of slots ns and the coil configuration of the stators 2B and 2C are different from those of the first embodiment. In the third and fourth embodiments, the total number of magnetic poles nm = 8 and the number of slots ns = 36. Therefore, the number of slots per pole N1 = 4.5, the number of slots per pole per phase N2 = 1.5, and a fractional slot configuration.

  FIG. 17 is a diagram schematically illustrating the coil configuration of the stator 2B of the third embodiment. In the third embodiment, each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W of each phase of the stator winding 5 is connected to a series-connected long-pitch coil coil 58U, 58V, 58W and short winding coils 59U, 59V, 59W. The coil pitch Pc = 5 for the long-pitch coils 58U, 58V, 58W, and the coil pitch Pc = 3 for the short-pitch coils 59U, 59V, 59W.

  FIG. 18 is a diagram schematically showing the second floor arrangement of coil ends of the U-phase long-pitch coil 58U and the U-phase short-pitch coil 59U constituting the U-phase pole pair coil 52U. The long-pitch coils 58U, 58V, and 58W are full coils having a winding number Nw31. On the other hand, the short winding coils 59U, 59V, 59W are half coils in which the winding number Nw32 is half of the winding number Nw31 of the long-pitch coils 58U, 58V, 58W. The winding directions R of the long-pitch coils 58U, 58V, and 58W and the short-pitch coils 59U, 59V, and 59W coincide with each other.

  The coil arrangement position will be described in detail. The coil end of the U-phase long-pitch winding coil 58U extends from the groove part side position 44 of the first slot S1 to the groove bottom part position 45 of the sixth slot S6. The coil end of the U-phase short winding coil 59U extends from the groove opening side position 44 of the second slot S2 to the groove bottom side position 45 of the fifth slot S5. The coil end of another U-phase long-pitch winding coil 58U extends from the groove portion side position 44 of the tenth slot S10 to the groove bottom portion position 45 of the fifteenth slot S15. The coil end of another U-phase short-pitch coil 59U extends from the groove portion side position 44 of the eleventh slot S11 to the groove bottom portion position 45 of the fourteenth slot S14.

  The arrangement positions of the V-phase coils 58V and 59V are obtained by shifting the arrangement positions of the U-phase coils 58U and 59U by three slots in the right direction in FIG. The coil end of the V-phase long-pitch winding coil 58V extends from the groove opening side position 44 of the fourth slot S4 to the groove bottom side position 45 of the ninth slot S9. The coil end of the V-phase short-pitch coil 59V extends from the groove opening side position 44 of the fifth slot S5 to the groove bottom side position 45 of the eighth slot S8.

  The arrangement positions of the W-phase coils 58W and 59W are obtained by shifting the arrangement positions of the U-phase coils 58U and 59U by six slots to the right in FIG. The coil end of the W-phase long-pitch winding coil 58W extends from the groove opening side position 44 of the seventh slot S7 to the groove bottom side position 45 of the twelfth slot S12. The coil end of the W-phase short winding coil 59W extends from the groove opening side position 44 of the eighth slot S8 to the groove bottom side position 45 of the eleventh slot S11.

  As shown in FIG. 17, in a specific rotational phase of the rotor 3, the U-phase long-pitch coil 58U and the U-phase short-pitch coil 59U face the N magnetic pole 34N. That is, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of the stator 2B have an aggregate configuration. Further, as shown in FIG. 18, the U-phase long-pitch coil 58U and the U-phase short-pitch coil 59U have coil ends arranged in two stories in the axis AX direction. Further, the required number of interphase insulating papers 9 is three per one magnetic pole pair.

  Also in the third embodiment, the assembling work of the stator winding 2 can be performed by the same method as in the first embodiment. For example, it is assumed that the W-phase long-pitch winding coil 58W and the W-phase short-pitch winding coil 59W are first assembled from the seventh slot S7 to the twelfth slot S12. Then, the second U-phase long-pitch coil 58U and the U-phase short-pitch coil 59U are assembled from the 10th slot S10 to the 15th slot S15, and the third is the V-phase long-pitch coil 58V and the V-phase short-pitch coil. 59V is incorporated from the thirteenth slot S13 to the eighteenth slot S18. Finally, the V-phase long-pitch winding coil 58V and the V-phase short-pitch winding coil 59V are assembled from the fourth slot S4 to the ninth slot S9. In this case, about four coils 58W, 59W, 58U, and 58V to be assembled at the beginning can be used for the number of coil sides that are once taken out of the slot 43 and reassembled, so that the assembling workability is improved. Furthermore, the effect of downsizing by reducing the height of the coil end in the axis AX direction and the effect of halving the interphase insulating paper 9 can be obtained as in the first embodiment.

  FIG. 19 is a diagram schematically illustrating the coil configuration of the stator 2C of the fourth embodiment. In the fourth embodiment, each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of each phase of the stator winding 5 is connected in series to a first short-pitch coil 60U. , 60V, 60W and second short-pitch coils 61U, 61V, 61W. The first short-pitch coil 60U, 60V, 60W has a coil pitch Pc = 3, and the second short-pitch coil 61U, 61V, 61W has a coil pitch Pc = 4.

  FIG. 20 is a diagram schematically showing a U-phase first short-winding coil 60U and a U-phase second short-winding coil 61U constituting the U-phase pole pair coil 52U. The second short-pitch winding coils 61U, 61V, 61 are full coils with the number of windings Nw42. On the other hand, the first short winding coils 60U, 60V, 60W are half coils in which the winding number Nw41 is half of the winding number Nw42 of the second short winding coils 61U, 61V, 61. The winding directions R of the first short-pitch coils 60U, 60V, 60W and the second short-pitch coils 61U, 61V, 61W are opposite to each other.

  The coil arrangement position will be described in detail. The coil end of the U-phase first short winding coil 60U extends from the groove portion side position 44 of the first slot S1 to the groove bottom portion position 45 of the fourth slot S4. The coil end of the U-phase second short winding coil 61U extends from the groove opening side position 44 of the fifth slot S5 to the groove bottom side position 45 of the ninth slot S9. The coil end of another U-phase first short-pitch coil 60U extends from the groove opening side position 44 of the tenth slot S10 to the groove bottom side position 45 of the thirteenth slot S4.

  The arrangement positions of the V-phase coils 60V and 61V are shifted from the arrangement positions of the U-phase coils 60U and 61U by three slots in the right direction in FIG. The coil end of the V-phase first short winding coil 60V extends from the groove opening side position 44 of the fourth slot S4 to the groove bottom side position 45 of the seventh slot S7. The coil end of the V-phase second short coil 61V extends from the groove portion side position 44 of the eighth lot S8 to the groove bottom portion position 45 of the twelfth slot S12. The coil end of another V-phase first short winding coil 60V extends from the groove opening side position 44 of the thirteenth slot S13 to the groove bottom side position 45 of the sixteenth slot S16.

  The arrangement positions of the W-phase coils 60W and 61W are obtained by shifting the arrangement positions of the U-phase coils 60U and 61U by six slots in the right direction in FIG. The coil end of the W-phase first short winding coil 60W extends from the groove opening side position 44 of the seventh slot S7 to the groove bottom side position 45 of the tenth slot S10. The coil end of the W-phase second short coil 61W extends from the groove opening side position 44 of the eleventh slot S11 to the groove bottom side position 45 of the fifteenth slot S15. The coil end of another W-phase second short coil 61W extends from the groove-portion side position 44 of the second slot S2 to the groove bottom-side position 45 of the sixth slot S6.

  As shown in FIG. 19, the U-phase first short winding coil 60 </ b> U faces the N magnetic pole 34 </ b> N in a specific rotational phase of the rotor 3. On the other hand, U-phase second short winding coil 61U faces S magnetic pole 34S. That is, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of the stator 2C have a distributed configuration. Further, the required number of interphase insulating papers 9 is 6 per magnetic pole pair.

  Also in the fourth embodiment, the assembling work of the stator winding 2 can be performed by the same method as in the first embodiment. For example, assume that the W-phase first short-pitch coil 60W is first assembled from the seventh slot S7 to the tenth slot S10. Then, after the second, the V-phase second short-pitch coil 61V, the U-phase first short-pitch coil 60U, the W-phase second short-pitch coil 61W, the V-phase first short-pitch coil 60V, the U-phase second The short winding coils 61U are assembled in this order. At the end, the U-phase second short coil 61U is assembled from the fifth slot S5 to the ninth slot S9. In this case, about six coils 60W, 61V, 60U, 61W, 60V, and 61U to be assembled at the beginning can be used for the number of coil sides that are once taken out of the slot 43 and reassembled, so that assembling workability is improved. Furthermore, there is room for reduction in the height of the coil end in the axis AX direction, and the coil end can be made compact.

<Fifth and sixth embodiments>
Next, regarding the three-phase rotating electrical machine of the fifth and sixth embodiments, differences from the first to fourth embodiments will be mainly described. In the fifth and sixth embodiments, the configuration of the rotor 3 is the same as that of the first embodiment, and the number of slots ns and the coil configuration of the stators 2D and 2E are different from those of the first embodiment. In the fifth and sixth embodiments, the total number of magnetic poles nm = 8 and the number of slots ns = 60. Therefore, the number of slots per pole N1 = 7.5, the number of slots per pole per phase N2 = 2.5, and a fractional slot configuration.

  FIG. 21 is a diagram schematically illustrating the coil configuration of the stator 2D of the fifth embodiment. In the fifth embodiment, each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W of each phase of the stator winding 5 is connected in series with long-pitch coils 62U and 62V. 62W, first short-pitch coils 63U, 63V, 63W, and second short-pitch coils 64U, 64V, 64W. The coil pitch Pc = 9 for the long winding coils 62U, 62V, 62W, the coil pitch Pc = 7 for the first short winding coils 63U, 63V, 63W, and the second short winding coils 64U, 64V, 64W. The coil pitch Pc = 5.

  FIG. 22 is a schematic diagram showing the third-floor arrangement of coil ends of the U-phase long-pitch coil 62U, the U-phase first short-pitch coil 63U, and the U-phase second short-pitch coil 64U constituting the U-phase pole pair coil 52U. FIG. The long winding coils 62U, 62V, and 62W are full coils with the number of windings Nw51. The first short-pitch winding coils 63U, 63V, 63W are full coils in which the winding number Nw52 is equal to the winding number Nw51 of the long-pitch coils 62U, 62V, W. The second short winding coils 64U, 64V, 64W are half coils in which the winding number Nw53 is half of the winding number Nw51 of the long-pitch coils 62U, 62V, W. The winding directions R of the long winding coils 62U, 62V, 62W, the first short winding coils 63U, 63V, 63W, and the second short winding coils 64U, 64V, 64W coincide with each other.

  The coil arrangement position will be described in detail. The coil end of the U-phase long-pitch winding coil 62U extends from the groove portion side position 44 of the first slot S1 to the groove bottom portion position 45 of the tenth slot S10. The coil end of the U-phase first short winding coil 63U extends from the groove opening side position 44 of the second slot S2 to the groove bottom side position 45 of the ninth slot S9. The coil end of the U-phase second short coil 64U extends from the groove-portion side position 44 of the third slot S3 to the groove bottom-side position 45 of the eighth slot S8.

  The arrangement positions of the V-phase coils 62V, 63V, and 64V are shifted from the arrangement positions of the U-phase coils 62U, 63U, and 64U by 5 slots in the right direction in FIG. The coil end of the V-phase long-pitch winding coil 62V extends from the groove opening side position 44 of the sixth slot S6 to the groove bottom side position 45 of the fifteenth slot S15. The coil end of the V-phase first short winding coil 63V extends from the groove opening side position 44 of the seventh slot S7 to the groove bottom side position 45 of the fourteenth slot S14. The coil end of the V-phase second short winding coil 64V extends from the groove opening side position 44 of the eighth slot S8 to the groove bottom side position 45 of the thirteenth slot S13.

  The arrangement positions of the W-phase coils 62W, 63W, and 64WV are obtained by shifting the arrangement positions of the U-phase coils 62U, 63U, and 64U by 10 slots in the right direction in FIG. The coil end of the W-phase long-pitch coil 62W extends from the groove opening side position 44 of the eleventh slot S11 to the groove bottom side position 45 of the twentieth slot S20. The coil end of the W-phase first short coil 63W extends from the groove opening side position 44 of the 12th slot S12 to the groove bottom side position 45 of the 19th slot S19. The coil end of the W-phase second short coil 64W extends from the groove opening side position 44 of the thirteenth slot S13 to the groove bottom side position 45 of the eighteenth slot S18.

  As shown in FIG. 21, at a specific rotational phase of the rotor 3, the U-phase long-pitch coil 62U, the U-phase first short-pitch coil 63U, and the U-phase second short-pitch coil 64U are N magnetic poles. It faces 34N. That is, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of the stator 2D have an intensive configuration. Furthermore, as shown in FIG. 22, the U-phase long-pitch coil 62U, the U-phase first short-pitch coil 63U, and the U-phase second short-pitch coil 64U have a three-story coil end in the axis AX direction. Placed in. Further, the required number of interphase insulating papers 9 is three per one magnetic pole pair.

  Also in the fifth embodiment, the assembling work of the stator winding 2 can be performed by the same method as in the first embodiment. For example, it is assumed that the W-phase long-pitch coil 62W, the W-phase first short-pitch coil 63W, and the W-phase second short-pitch coil 64W are first assembled from the 11th slot S11 to the 20th slot S20. Then, secondly, the U-phase long-pitch coil 62U, the U-phase first short-pitch coil 63U, and the U-phase second short-pitch coil 64U are assembled from the 16th slot S16 to the 25th slot S25. Finally, the V-phase long-pitch coil 62V, the V-phase first short-pitch coil 63V, and the V-phase second short-pitch coil 64V are assembled from the sixth slot S6 to the fifteenth slot S15.

  Here, the coil ends of the first short winding coils 63U, 63V, and 63W are disposed across the coil ends of the second short winding coils 64U, 64V, and 64W, and further, the long ends are straddled across the two coils. Since the coil ends of the winding coils 62U, 62V, and 62W are arranged, a three-story arrangement of the coil ends is possible. According to this, since the second short winding coils 64U, 64V, 64W, the first short winding coils 63U, 63V, 63W and the long winding coils 62U, 62V, 62W can be nested and held, Coils can be easily assembled all at once, and the assembling workability becomes extremely good. In addition, the number of coil sides that are once taken out of the slot 43 and reassembled is only about five coils 62W, 63W, 64W, 62U, and 63U to be assembled at the beginning, and the assembling workability is improved. Furthermore, the effect of downsizing by reducing the height of the coil end in the axis AX direction and the effect of halving the interphase insulating paper 9 can be obtained as in the first embodiment.

  FIG. 23 is a diagram schematically illustrating the coil configuration of the stator 2E of the sixth embodiment. In the sixth embodiment, each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of each phase of the stator winding 5 is connected in series to a first short-pitch coil 65U. , 65V, 65W, second short-pitch coils 66U, 66V, 66W, and third short-pitch coils 67U, 67V, 67W. The first short-pitch coil 65U, 65V, 65W has a coil pitch Pc = 7, the second short-pitch coil 66U, 66V, 66W has a coil pitch Pc = 5, and the third short-pitch coil 67U, 67V, The coil pitch Pc = 67W.

  FIG. 24 is a diagram schematically showing the second floor arrangement of coil ends of the U-phase first to third short-pitch coils 65U, 66U, and 67U constituting the U-phase pole pair coil 52U. The first short-pitch coils 65U, 65V, 65W are full coils with a winding number Nw61. The second short-pitch winding coils 66U, 66V, 66W are half coils in which the winding number Nw62 is half of the winding number Nw61 of the first short-pitch winding coils 65U, 65V, 65W. The third short-pitch winding coils 67U, 67V, 67W are full coils in which the winding number Nw63 is equal to the winding number Nw61 of the first short-pitch winding coils 65U, 65V, 65W. The winding directions R of the first short-pitch coils 65U, 65V, 66W and the second short-pitch coils 66U, 66V, 66W coincide with each other, and the third short-pitch coils 67U, 67V, 67W are wound. Only the direction R is the reverse direction.

  The coil arrangement position will be described in detail. The coil end of the U-phase first short winding coil 65U extends from the groove-portion side position 44 of the first slot S1 to the groove bottom-side position 45 of the eighth slot S8. The coil end of the U-phase second short winding coil 66U extends from the groove opening side position 44 of the second slot S2 to the groove bottom side position 45 of the seventh slot S7. The coil end of the U-phase third short winding coil 67U extends from the groove opening side position 44 of the ninth slot S9 to the groove bottom side position 45 of the fifteenth slot S15.

  The arrangement positions of the V-phase coils 65V, 66V, and 67V are obtained by shifting the arrangement positions of the U-phase coils 65U, 66U, and 67U by 5 slots in the right direction in FIG. The coil end of the V-phase first short coil 65V extends from the groove opening side position 44 of the sixth slot S6 to the groove bottom side position 45 of the thirteenth slot S13. The coil end of the V-phase second short winding coil 66V extends from the groove opening side position 44 of the seventh slot S7 to the groove bottom side position 45 of the twelfth slot S12. The coil end of the V-phase third short winding coil 67U extends from the groove portion side position 44 of the fourteenth slot S14 to the groove bottom portion position 45 of the twentieth slot S20 that cannot be seen in FIG.

  The arrangement positions of the W-phase coils 65W, 66W, and 67W are obtained by shifting the arrangement positions of the U-phase coils 65U, 66U, and 67U by 10 slots in the right direction in FIG. The coil end of the W-phase first short winding coil 65W extends from the groove opening side position 44 of the eleventh slot S11 to the groove bottom side position 45 of the eighteenth slot S18. The coil end of the W-phase second short winding coil 66W extends from the groove opening side position 44 of the 12th slot S12 to the groove bottom side position 45 of the 17th slot S17. The coil end of the W-phase third short winding coil 67W not visible in FIG. 23 extends from the groove opening side position 44 of the 19th slot S19 to the groove bottom side position 45 of the 25th slot S25. The coil end of another W-phase third short winding coil 67W visible in FIG. 23 extends from the groove opening side position 44 of the fourth slot S4 to the groove bottom side position 45 of the tenth slot S10.

  As shown in FIG. 23, in a specific rotational phase of the rotor 3, the U-phase first short-pitch coil 65U and the U second short-pitch coil 66U face the N magnetic pole 34N. On the other hand, U-phase third short winding coil 67U faces S magnetic pole 34S. That is, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of the stator 2E have a distributed configuration. As shown in FIG. 24, the U-phase first short winding coil 65U and the U second short winding coil 66U are arranged in two stories in the axis AX direction. Further, the required number of interphase insulating papers 9 is 6 per magnetic pole pair.

  Also in the sixth embodiment, the assembling work of the stator winding 2 can be performed by the same method as in the first embodiment. For example, assume that the W-phase third short winding coil 67W is first assembled from the fourth slot S4 to the tenth slot S10. Then, after the second phase, the V-phase first short winding coil 65V and the V-phase second short winding coil 66V, the U-phase third short-winding coil 67U, the W-phase first short-winding coil 65W and the W-phase second The short-pitch coil 66W, the V-phase third short-pitch coil 67V, the U-phase first short-pitch coil 65U, and the U-phase second short-pitch coil 66U are assembled in this order. At the end, the U-phase first short winding coil 65U and the U-phase second short winding coil 66U are assembled from the first slot S1 to the eighth slot S8. In this case, the number of coil sides that are once taken out of the slot 43 and reassembled is only about eight coils 67W, 65V, 66V, 67U, 65W, 66W, 67V, 65U to be assembled at the beginning. Will improve. Furthermore, there is room for reduction in the height of the coil end in the axis AX direction, and the coil end can be made compact.

<Aspects and Effects of First to Sixth Embodiments>
The three-phase rotating electrical machine 1 that is the motor device of the first to sixth embodiments includes a stator core 4 having a plurality of slots 43 each having a groove shape 48 and a groove bottom portion 49, and a plurality of slots 43 and a plurality of slots 43. A stator 2, 2A-2E having a stator winding 5 to which a plurality of coils wound respectively in a slot 43 are connected, and a magnetic pole pair composed of an N magnetic pole 34N and an S magnetic pole 34S; 2A to 2E, and a motor device (rotor 3) supported so as to be rotatable or movable with respect to 2A to 2E, and a plurality of coils are respectively provided in a pair of slots 43. A coil between a pair of coil sides, each having a pair of coil sides that are wound and housed in a pair of slots, and a pair of coil ends that connect ends of the pair of coil sides. At least one of the pitch Pc and the number of windings Nw is a plurality of different types, and each of the pair of coil ends extends from one groove opening side position 44 of the pair of slots to the other groove bottom side of the pair of slots. It is arranged so as to cross over the position 45.

  According to this, a configuration is adopted in which the coil end of the coil constituting the stator winding 5 extends from the groove opening side position 44 of one slot of the stator core 4 to the groove bottom side position 45 of another slot. The shape and arrangement position of the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W are equalized in three phases. Therefore, compared with the prior art in which the coil ends are concentrically isolated, excellent performance in terms of reducing noise and vibration and improving efficiency is realized.

  Further, in the prior art in which the coil ends are spirally formed, the operation of assembling the stator winding 5 into the stator core 4 requires that all the coils be separately assembled for each coil side, which is troublesome twice. Yes. On the other hand, in the first and third to sixth embodiments, both coil sides of all the coils can be incorporated together, and the incorporated coil side is once taken out of the slot 43 and reassembled twice. The effort is limited to the first few coils that are installed. Therefore, the workability of the work of incorporating the stator winding 5 into the stator iron core 4 is improved. Furthermore, in the first, second, third, and fifth embodiments, the coil ends are arranged in two or three stories in the direction of the axis AX by using the long-winding coil and the short-turn coil together. According to this, it becomes easy to hold a plurality of coils in a nested manner and integrate them in a lump, thereby improving the assembling workability.

  In the first, third, and fifth embodiments, the coil end height can be reduced and compactized by the coil end shaping work. Also in the fourth and sixth embodiments, the coil end can be made compact. Furthermore, in the first, third, and fifth embodiments, the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W are integrated, so that the required number of interphase insulating paper 9 is the prior art. Is halved from.

  In addition, the first to sixth embodiments can be achieved by the comprehensive effects such as the reduction in the number of assembling work by improving the assembling workability described above, the reduction in the amount of conductor used by downsizing the coil end, and the half of the interphase insulating paper 9. The manufacturing cost of the three-phase rotating electrical machine 1 is significantly reduced.

  In the first to sixth embodiments, the plurality of coils includes the number N1 of slots per pole obtained by dividing the number ns of the plurality of slots 43 of the stator iron core 4 by the total number of poles nm of the N magnetic pole 34N and the S magnetic pole 34S. A long-pitch coil having a longer coil pitch Pc and a short-pitch coil having a shorter coil pitch Pc than the number of pole slots N1, and / or a pair of coils having a relatively large number of windings Nw. A full coil in which each of the sides occupies the whole of each of the pair of slots 43, and a half coil in which each of the pair of coil sides occupies half of each of the pair of slots with a relatively small number of windings Nw .

  According to this, since the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W can be configured by combining various types of coils, the range of the three-phase rotating electrical machine 1 that can implement the present invention is wide. .

  Further, the stator winding 5 has three phases. In addition, the stator 2 has a rotationally symmetric shape, and the mover is a rotor 3 that is rotatably supported with respect to the stator 2. According to this, the present invention can be implemented as a three-phase rotating electrical machine 1 including a three-phase synchronous motor.

  Further, the stator may be a linear shape constituting a track, and the mover may be a linear mover supported so as to be movable along the track. According to this, the present invention can be implemented as a linear motor device.

<Seventh embodiment>
Next, the three-phase rotating electrical machine of the seventh embodiment in which the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W are configured by one type of coil is different from the first to sixth embodiments. Is mainly explained. In the seventh embodiment, the configuration of the rotor 3 and the shape of the stator core 4 are the same as those in the first embodiment, and the coil configuration of the stator 2F is different from that in the first embodiment. Therefore, the number of slots per pole N1 = 6, the number of slots per pole per phase N2 = 2, and an integer slot configuration.

  FIG. 25 is a diagram schematically illustrating the coil configuration of the stator 2F of the seventh embodiment. In the seventh embodiment, each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of each phase of the stator winding 5 has two full-pitch coils connected in series. It consists of 68U, 68V, 68W. The coil pitch Pc = 6 of all-pitch coils 68U, 68V, 68W. The full-pitch coils 68U, 68V, and 68W are full coils having a winding number Nw7. The winding directions of the full-pitch coils 68U, 68V, and 68W coincide with each other.

  The coil arrangement position will be described in detail. The coil ends of the two U-phase full-pitch winding coils 68U are connected to the seventh and eighth slots S7, S8 from the groove side position 44 of the first and second slots S1, S2. Crossing to the groove bottom side position 45, respectively.

  The arrangement positions of the two V-phase full-pitch coils 68V are obtained by shifting the arrangement positions of the two U-phase full-pitch coils 68U by four slots to the right in FIG. That is, the coil ends of the two V-phase full-pitch winding coils 68V are moved from the groove opening side position 44 of the fifth and sixth slots S5 and S6 to the groove bottom side position 45 of the eleventh and twelfth slots S11 and S12, respectively. Crossing.

  The arrangement positions of the two W-phase full-pitch coils 68W are obtained by shifting the arrangement positions of the two U-phase full-pitch coils 68U by eight slots to the right in FIG. That is, the coil ends of the two W-phase full-pitch coils 68W are moved from the groove opening side position 44 of the ninth and tenth slots S9, S10 to the groove bottom side position 45 of the fifteenth and sixteenth slots S15, S16, respectively. Crossing.

  Furthermore, the coil ends of the other two U-phase full-pitch winding coils 68U are positioned from the groove opening side position 44 of the thirteenth and fourteenth slots S13 and S14 to the groove bottom side position 45 of the nineteenth and twentieth slots S19 and S20. It crosses each. In addition, the coil ends of the other two W-phase full-pitch winding coils 68W are arranged in the third and fourth slots S3 and S4 from the groove-portion side position 44 of the 45th and 46th slots S45 and S46, which are not visible in FIG. Crossing to the groove bottom side position 45, respectively.

  As shown in FIG. 25, in a specific rotational phase of the rotor 3, the two U-phase full-pitch coils 68U face the N magnetic pole 34N. That is, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W have a consolidated configuration. The coil ends of the two U-phase full-pitch winding coils 68U are arranged side by side in a direction from the groove opening side position 44 to the groove bottom side position 45 of the slot 43.

  Next, a method of assembling the stator winding 5 into the slot 43 of the stator core 4 will be described. The two full-pitch coils 68U, 68V, 68W of each of the four sets of each phase constituting the stator winding 5 are first wound with a conductor on a winding jig simulating the stator core 4. Each is formed. Then, as shown by the arrow P2 in FIG. 26, the full-pitch winding coils 68U, 68V, 68W are incorporated in the slots 43 in order from the left side to the right side in the drawing. However, the coil at the beginning and end of assembly is not particularly limited. Here, a description will be given by taking as an example the order in which the first set of two V-phase full-pitch coils 68V is first assembled and the fourth set of two U-phase full-pitch coils 68U is assembled at the end.

  FIG. 26 is a diagram showing in simplified form a coil to be incorporated first in the assembling work of the stator winding 5. FIG. 27 is a diagram illustrating a state in which the coil side of the coil that has already been incorporated is once out of the slot 43 immediately before the last coil is assembled in the assembling work of the stator winding 5. FIG. 28 is a diagram showing a state immediately after the last coil is assembled in the assembling work of the stator winding 5. FIG. 29 is a diagram showing an alternative method that can reduce the number of coil sides that are once taken out of the slot 43 as compared with FIG.

  As shown in FIG. 26, the operator first sets the pair of coil sides of the first set of two V-phase full-pitch coils 68V to the fifth and eleventh slots S5, S11, and sixth, respectively. And inserted into the twelfth slots S6 and S12. The operator secondly connects the pair of coil sides of the first set of two W-phase full-pitch coils 68W to the ninth and fifteenth slots S9 and S15, and the tenth and sixteenth slots S10, respectively. Insert it into S16 and incorporate it. The operator thirdly connects the pair of coil sides of the first set of two U-phase full-pitch coils 68U to the thirteenth and nineteenth slots S13 and S19, and the fourteenth and twentieth slots S14, respectively. Insert it into S20 and incorporate it. Hereinafter, in order from the left side to the right side in FIG. 26, the operator incorporates all-pitch winding coils 68U, 68V, 68W.

  The operator 11thly, the pair of coil sides of the fourth set of two W-phase full-pitch coils 68W are respectively connected to the 45th and third slots S45, S3, and the 46th and fourth slots S46, Insert it into S4 and incorporate it (S45 and S46 are not visible in FIG. 27). Assembling positions of the fourth set of two U-phase full-pitch coils 68U to be incorporated into the last twelfth are the groove side position 44 of the first and second slots S1, S2, the seventh and eighth slots S7, It is between the groove bottom side position 45 of S8. However, the coil side on one side of the first set of two V-phase full-pitch winding coils 68V has already been incorporated into the groove portion side position 44 of the fifth and sixth slots S5 and S6, which hinders the assembling work. Become.

  For this reason, as shown in FIG. 27, the operator temporarily connects the coil side on one side of the first set of two V-phase full-pitch winding coils 68V in the fifth and sixth slots S5 and S6. Put it out. At this time, the coil side on one side of the first set of two W-phase full-pitch coils 68W in the first set may also become an obstacle in a chained manner. Furthermore, the coil side on one side after the first set U-phase full-pitch winding coil 68 </ b> W that has already been installed may also become an obstacle in a chained manner.

  The worker once puts out the coil side within the range that gets in the way to the outside of the slot 43. In the example of FIG. 27, coils from the fifth, sixth, ninth, tenth, thirteenth, fourteenth, seventeenth and eighteenth slots S5, S6, S9, S10, S13, S14, S17, S18, respectively. The coil side on one side of 68V, 68W, 68U, and 68V is once taken out of the slot 43.

  As a result, as shown in FIG. 28, the operator connects the pair of coil sides of the fourth set of two U-phase full-pitch coils 68U to the first and seventh slots S1, S7, and 2, can be inserted into the eighth slots S2, S8. Next, the operator re-assembles the coil side on one side of the coils 68V, 68W, 68U, 68V once taken out of the slot 43 into the original slot 43 (see arrows M5 and M6).

  In addition, when the rigidity of the coil is relatively small and temporary deformation is allowed, the operator can adopt an alternative method shown in FIG. 29 instead of FIG. In this alternative method, the worker once puts the coil side on one side of the first set of two V-phase full-pitch winding coils 68V, which is in the way, out of the fifth and sixth slots S5 and S6. . Further, the worker temporarily bends the V-phase full-pitch winding coil 68V so that the coil side on one side is not located between the first slot S1 and the eighth slot S8. Similarly, the operator once takes out the coil side on one side of the first set of two W-phase full-pitch coils 68W that is already in the way to the outside of the fifth and sixth slots S5, S6, Bending.

  In the example of FIG. 29, one side of two V-phase full-pitch coils 68V and two W-phase full-pitch coils 68W from the fifth, sixth, ninth, and tenth slots S5, S6, S9, and S10. The coil side is once taken out of the slot 43 and bent. Thus, the operator can connect the pair of coil sides of the fourth set of two U-phase full-pitch coils 68U to the first and seventh slots S1 and S7 and the second and eighth slots S2 and S8, respectively. Can be inserted and incorporated. Next, the worker restores the bend to the original shape while re-installing the coil side on one side of the coils 68 </ b> V and 68 </ b> W once taken out of the slot 43 into the original slot 43. According to the alternative method, the number of coil sides that are once taken out of the slot 43 is reduced from eight in FIG. 27 to four in FIG.

  After completing the assembly of the coil, the worker performs an incidental work. The incidental work includes a coil end shaping work, an interphase insulating paper mounting work, a coil connection work, and the like. 30 is a cross-sectional view taken along the line KK of FIG. 25 schematically showing the cross-sectional shape of the coil end immediately after assembly. FIG. 31 is a cross-sectional view schematically showing the cross-sectional shape of the coil end after the coil end shaping work and the interphase insulating paper mounting work. 30 and 31 exemplify the case where the total number of winding coils 68U, 68V, 68W is Nw7 = 8 turns.

  As shown in FIG. 30, the coil ends of the full-pitch coils 68U, 68V, 68W immediately after assembly are arranged side by side. For example, each coil end occupies one slot pitch in the groove width direction of the slot 43, and the conductors are arranged in two turns, and the conductors are arranged in four directions in the axis AX direction. There is a gap corresponding to two slot pitches between the different phases of the coil ends. Therefore, by effectively using this gap, the height HC of the coil end in the axis line AX direction can be reduced.

  The operator can perform shaping while maintaining the arrangement of the coil ends side by side, and can arrange four turns for every two slot pitches in the groove width direction of the slots 43. As a result, the coil ends are spread and flattened with two turns arranged in the axis AX direction and four turns arranged in the groove width direction of the slot 43. As a result of the shaping process, the cross-sectional shape of the coil end shown in FIG. 31 is obtained. The coil end height HD after shaping can be reduced to approximately 50% of the coil end height HC immediately after assembly. Therefore, the disadvantage of the two-story structure that is not suitable for miniaturization can be eliminated, and the coil end can be made compact.

  During or at the end of the coil end shaping work, the operator attaches interphase insulating paper 9 between the different phases of the coil end. The required number of interphase insulating papers 9 is three per one magnetic pole pair. Thereafter, the operator performs a coil connection operation.

  The three-phase rotating electrical machine according to the seventh embodiment has a U-phase, V-phase, and W-phase pole pair coil as compared with the configuration in which the coil ends of the first prior art are arranged concentrically (see FIG. 13). The characteristics of 52U, 52V, and 52W are equalized. For this reason, excellent performance in terms of reducing noise and vibration and improving efficiency is realized.

  Further, similarly to the method of assembling the stator winding 2 in the first embodiment, all the full-pitch coils 68U, 68V, and 68W can be assembled together in the seventh embodiment. Further, the time and effort required to bring the coil side out of the slot 43 and reassemble it is limited to a few coils at the beginning. Therefore, also in the seventh embodiment, the workability of the work of incorporating the stator winding 5 into the slot 43 of the stator core 4 is improved. Further, the number of necessary locations of the interphase insulating paper 9 is halved to 3 from the 6 locations per magnetic pole pair in the second prior art.

  The three-phase rotating electrical machine of the seventh embodiment is wound around a stator core 4 having a plurality of slots 43 each having a groove shape 48 and a groove bottom portion 49, and a plurality of slots 43, respectively. A stator 2F having a stator winding 5 to which a plurality of coils are connected, and a magnetic pole pair made up of an N magnetic pole 34N and an S magnetic pole 34S, and supported so as to be rotatable or movable with respect to the stator 2F. A stator (rotor 3), wherein the number ns of the plurality of slots 43 of the stator core 4 is divided by the total number of poles nm of the N magnetic pole 34N and the S magnetic pole 34S, and further the stator winding The number of slots per phase N2 obtained by dividing by the number of phases of the wire 5 is an integer of 2 or more, and the plurality of coils are wound around a pair of slots among the plurality of slots 43, respectively. Fit in slot A pair of coil sides and a pair of coil ends that connect ends of the pair of coil sides, and the coil pitch Pc and the number of windings Nw7 between the pair of coil sides are equal to each other. One type of the movable element has a concentrated configuration facing one of the N magnetic pole 34N and the S magnetic pole 34S at a specific rotational phase or a specific movement position of the mover, and each of the pair of coil ends is a pair. It is arranged so as to extend from one groove opening side position 44 of the slot to the other groove bottom side position 45 of the pair of slots.

  According to this, in the three-phase rotating electrical machine having an integer configuration in which the number of slots per phase per pole N2 is 2 or more, the same effect as in the first embodiment is produced. In other words, the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W are evenly shaped and arranged in three phases, realizing excellent performance in terms of reducing noise and vibration and improving efficiency. Is done. Further, in the work of assembling the stator winding 5 into the stator iron core 4, the work is limited twice to the initial number of coils, so that the assembling workability is improved. Furthermore, the effect that the coil end can be made compact by the coil end shaping work, and the effect that the number of necessary portions of the interphase insulating paper 9 is reduced by half also occur.

  Further, in the seventh embodiment, the plurality of coils include a number N1 of slots per pole obtained by dividing the number NS of the plurality of slots 43 of the stator core 4 by the total number of poles nm of the N magnetic pole 34N and the S magnetic pole 34S, A full-pitch coil having the same pitch Pc and a full coil in which each of the pair of coil sides occupies the whole of the pair of slots. According to this, the types of coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W are specified, and the above-described effects become remarkable.

<Eighth Embodiment>
Next, a difference between the three-phase rotating electrical machine of the eighth embodiment and the first to seventh embodiments will be mainly described. In the eighth embodiment, the coils 53U, 54U, 53V, 54V, 53W, and 54W of the stator 2 of the first embodiment are each divided into two to form divided coils. The two divided coils are arranged separately in the groove depth direction of the slot 43 and are shifted in the circumferential direction by an amount corresponding to an electrical angle of 180 °. In the eighth embodiment, the configuration of the rotor 3 and the shape of the stator core 4 are the same as those of the first embodiment, and the coil configuration of the stator 2G is different from those of the first to seventh embodiments. Therefore, the number of slots per pole N1 = 6, the number of slots per pole per phase N2 = 2, and an integer slot configuration.

  FIG. 32 is a diagram schematically illustrating the coil configuration of the stator 2G of the eighth embodiment. In the eighth embodiment, the coil configuration of the stator 2G is divided into two stages in the groove depth direction of the slot 43. The side of the slot 43 that is close to the groove portion 48 is referred to as an inner slot position 43i, and the side that is close to the groove bottom 49 is referred to as an outer slot position 43o. A spatial region in the region of the slot inner step position 43 i and close to the groove portion 48 of the slot 43 is the inner step groove portion side position 44 i, and is in the region of the slot inner step position 43 i and in the groove depth direction of the slot 43. An intermediate space area is the inner groove bottom side position 45i. In addition, a space region in the region of the slot outer step position 43o and adjacent to the inner step groove bottom side position 45i is the outer step groove port side position 44o, and is in the region of the slot outer step position 43o and of the slot 43. A space region close to the groove bottom 49 is the outer groove bottom side position 45o.

  Each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of each phase of the stator winding 5 is composed of four divided coils connected in series. In other words, each of the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W includes an outer stage long-pitch coil 70U, 70V, 70W, an outer stage short-pitch coil 71U, 71V, 71W, and an inner stage. It consists of long-pitch coils 72U, 72V, 72W and inner-stage short-pitch coils 73U, 73V, 73W. The coil pitch Pc of the outer stage long-pitch winding coils 70U, 70V, 70W is 7 and the coil pitch Pc of the outer stage short-pitch winding coils 71U, 71V, 71W is 5. Further, the coil pitch Pc of the inner stage long-pitch coils 72U, 72V, 72W is 7 and the coil pitch Pc of the inner stage short-pitch coils 73U, 73V, 73W is 5.

  The winding times Nw8 of these divided coils (70U, 70V, 70W, 71U, 71V, 71W, 72U, 72V, 72W, 73U, 73V, 73W) are equal to each other. These divided coils (70U, 70V, 70W, 71U, 71V, 71W, 72U, 72V, 72W, 73U, 73V, 73W) are half coils in which the coil side occupies half of the slot 43.

  Here, the outer-stage long-pitch coils 70U, 70V, and 70W and the inner-stage long-pitch coils 72U, 72V, and 72W are arranged so as to be shifted by an electrical angle equivalent to 180 °. Similarly, the outer short winding coils 71U, 71V, 71W and the inner short winding coils 73U, 73V, 73W are arranged so as to be shifted by an amount corresponding to an electrical angle of 180 °. The winding directions of the coils at the slot outer stage position 43o and the coils at the slot inner stage position 43i coincide with each other. The winding direction of the coil at the slot outer stage position 43o and the coil at the slot inner stage position 43i are opposite to each other.

  The coil arrangement position at the slot outer stage position 43o will be described in detail. The coil end of the U-phase outer stage long-pitch winding coil 70U is connected to the outer stage groove of the eighth slot S8 from the outer slot opening side position 44o of the first slot S1. It crosses the bottom side position 45o. The coil end of the U-phase outer stage short-pitch winding coil 71U extends from the outer stage groove opening side position 44o of the second slot S2 to the outer stage groove bottom side position 45o of the seventh slot S7.

  The coil end of the V-phase outer stage long-pitch winding coil 70V extends from the outer stage groove opening side position 44o of the fifth slot S5 to the outer stage groove bottom side position 45o of the twelfth slot S12. The coil end of the V-phase outer-stage short-pitch coil 71V extends from the outer-stage groove opening side position 44o of the sixth slot S6 to the outer-stage groove bottom side position 45o of the eleventh slot S11.

  The coil end of the W-phase outer step long-pitch winding coil 70W extends from the outer groove end side position 44o of the ninth slot S9 to the outer groove bottom side position 45o of the sixteenth slot S16. The coil end of the W-phase outer short-turn coil 71W extends from the outer groove opening side position 44o of the tenth slot S10 to the outer groove bottom side position 45o of the fifteenth slot S15.

  The coil arrangement position of the slot inner stage position 43i will be described in detail. The coil end of the U-phase inner stage long-pitch winding coil 72U is arranged from the inner stage groove opening side position 44i of the seventh slot S1 to the inner stage groove of the fourteenth slot S14. It extends to the bottom side position 45i. The coil end of the U-phase inner stage short-pitch coil 73U extends from the inner groove end side position 44i of the eighth slot S8 to the inner groove bottom side position 45i of the thirteenth slot S13.

  The coil end of the V-phase inner long groove winding coil 72V extends from the inner step groove opening side position 44i of the eleventh slot S11 to the inner step groove bottom side position 45i of the eighteenth slot S18. The coil end of the V-phase inner short-turn coil 73V extends from the inner groove opening side position 44i of the twelfth slot S12 to the inner groove bottom side position 45i of the seventeenth slot S17.

  The coil end of the W-phase inner stage long-pitch winding coil 72W extends from the inner stage groove opening side position 44i of the fifteenth slot S15 to the inner stage groove bottom side position 45i of the twenty-second slot S22. The coil end of the W-phase inner stage short-pitch coil 73W extends from the inner stage groove opening side position 44i of the sixteenth slot S16 to the inner stage groove bottom side position 45i of the twenty-first slot S21.

  Furthermore, the coil end of another V-phase inner stage long-pitch winding coil 72V extends from the inner stage groove opening side position 44i of the 47th slot S47 not visible in FIG. 32 to the inner stage groove bottom side position 45i of the sixth slot S6. ing. The coil end of another V-phase inner-stage short-pitch coil 73V extends from the inner-stage groove opening side position 44i of the 48th slot S48 to the inner-stage groove bottom side position 45i of the fifth slot S5.

  The coil end of another W-phase inner stage long-pitch winding coil 72W extends from the inner stage groove opening side position 44i of the third slot S3 to the inner stage groove bottom side position 45i of the tenth slot S10. The coil end of another W-phase inner-stage short-pitch winding coil 73W extends from the inner-stage groove opening side position 44i of the fourth slot S4 to the inner-stage groove bottom side position 45i of the ninth slot S9.

  As shown in FIG. 32, in a specific rotational phase of the rotor 3, the U-phase outer stage long-pitch winding coil 70U and the U-phase outer stage short-pitch winding coil 71U at the outer slot position 43o are opposed to the N magnetic pole 34N. To do. On the other hand, in the same rotational phase of the rotor 3, the U-phase inner stage long-pitch coil 72U and the U-phase inner stage short-pitch coil 73U at the slot inner stage position 43i face the S magnetic pole 34S. Therefore, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W of the stator 2G have the aggregate configuration when the slot outer stage position 43o and the slot inner stage position 43i are considered separately. It has become. In addition, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W have a magnetic field forming function equivalent to that of the distribution configuration when the slot outer stage position 43o and the slot inner stage position 43i are considered together. Have Thereby, compared with 1st Embodiment, the effect of reducing a leakage magnetic flux arises.

  Furthermore, in the U-phase outer stage long-pitch winding coil 70U and the U-phase outer stage short-pitch winding coil 71U at the slot outer stage position 43o, the coil ends are 2 in the direction of the axis AX as in the first embodiment shown in FIG. Arranged in a story. Similarly, the U-phase inner stage long-pitch winding coil 72U and the U-phase inner stage short-pitch winding coil 73U at the slot inner stage position 43i are also arranged in two stories in the axis AX direction. In the operation of incorporating the stator winding 5 into the stator core 4, the same method as in the first embodiment is repeated for the coil at the slot outer stage position 43o and the coil at the slot inner stage position 43i. The required number of interphase insulating papers 9 is three at each of the outer slot position 43o and the inner slot position 43i per magnetic pole pair, for a total of six.

  In the stator 2G of the eighth embodiment, since the coil is subdivided compared to the first embodiment, handling of the coil becomes easy. In addition, since the coil ends are arranged in two stories in the direction of the axis AX, the workability of the assembling work of the stator winding 5 is further improved. In the stator 2G of the eighth embodiment, it is easy to reduce the height HA in the axis AX direction by the coil end shaping work described in the first embodiment (see FIGS. 11 and 12).

  The three-phase rotating electrical machine of the eighth embodiment is wound around the stator core 4 having a plurality of slots 43 each having a groove shape and a groove opening portion 48 and a groove bottom portion 49, and the plurality of slots 43, respectively. A stator 2G having a stator winding 5 to which a plurality of coils are connected, and a magnetic pole pair made up of an N magnetic pole 34N and an S magnetic pole 34S, and supported so as to be rotatable or movable with respect to the stator 2G. A stator (rotor 3), wherein the number ns of the plurality of slots 43 of the stator core 4 is divided by the total number of poles nm of the N magnetic pole 34N and the S magnetic pole 34S, and further the stator winding The number of slots per phase per pole N2 obtained by dividing by the number of phases of the wire 5 is an integer, and the plurality of coils are each composed of an even number of divided coils having the same number of winding times Nw8 and connected in series. Even number The split coil is wound around a pair of slots among the plurality of slots 43, and a pair of coil ends that are housed in the pair of slots, and a pair of coil ends that connect ends of the pair of coil sides. And each of the pair of coil ends is arranged so as to extend from one groove opening side position 44i, 44o of the pair of slots to the other groove bottom side position 45i, 45o of the pair of slots. Half of the divided coils are arranged in close proximity to one of the slot portion 48 and the groove bottom portion 49 of the slot, and the N magnetic pole 34N and the magnetic pole 34N at a specific rotational phase or a specific movement position of the mover (rotor 3). It has a converging configuration facing one side of the S magnetic pole 34S, and the remainder of the even number of divided coils is arranged close to the other of the slot part 48 and the bottom part 49 of the slot. In addition, the magnetic poles 34N and S are arranged at a specific rotational phase or a specific movement position of the mover (rotor 3) by being shifted from the half of the even number of divided coils by an electrical angle corresponding to 180 °. It has a collective configuration facing the other side of the magnetic pole 34S.

  According to this, in the three-phase rotating electrical machine having an integer number of slots N2 per pole, the shapes and arrangement positions of the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W are equalized in three phases. As a result, excellent performance in terms of noise and vibration reduction and efficiency improvement is realized. Further, in the operation of incorporating the stator winding 5 into the stator core 4, the coil is subdivided as compared with the first embodiment, so that handling of the coil becomes easy. Furthermore, the coil end can be made compact by the coil end shaping process. In addition, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, and 52W are aggregated at the slot outer stage position 43o and the slot inner stage position 43i that are shifted from each other by 180 ° in electrical angle. Since the configurations are combined, the magnetic field forming function equivalent to that of the distribution configuration is provided, and the effect of reducing the leakage magnetic flux is produced.

  Furthermore, in the eighth embodiment, the even number of split coils includes the number N1 of slots per pole obtained by dividing the number ns of the plurality of slots 43 of the stator core 4 by the total number of poles nm of the N magnetic pole 34N and the S magnetic pole 34S. The long-pitch coils 70U, 70V, 70W, 72U, 72V, 72W are the full-pitch coils having the same coil pitch Pc between the pair of coil sides or the coil pitch Pc longer than the number N1 of the poles per pole. , And short-pitch coils 71U, 71V, 71W, 73U, 73V, 73W having a coil pitch Pc shorter than the number of slots N1 per pole.

  According to this, since the split coil may be one kind of full-pitch coil or a combination of a long-pitch coil and a short-pitch coil, the range of three-phase rotating electrical machines that can implement the present invention is wide. .

<Ninth and Tenth Embodiments>
Next, a difference between the three-phase rotating electrical machine of the ninth embodiment and the first to eighth embodiments will be mainly described. In the ninth embodiment, the configuration of the rotor 3, the shape of the stator core 4, and the configuration of the stator winding 5 are the same as those in the seventh embodiment, and the arrangement positions of the four coils of the stator 2H are the same. Different from the seventh embodiment. Therefore, the number of slots per pole N1 = 6, the number of slots per pole per phase N2 = 2, and an integer slot configuration.

  FIG. 33 is a diagram schematically illustrating the coil configuration of the stator 2H according to the ninth embodiment. In the ninth embodiment, each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of each phase of the stator winding 5 includes two full-pitch coils connected in series. It consists of 74U, 74V, 74W. The coil pitch Pc of the full-pitch coils 74U, 74V, and 74W is Pc = 6. The full-pitch coils 74U, 74V, and 74W are full coils with a winding number Nw9. The winding directions of the full-pitch coils 74U, 74V, and 74W coincide with each other. Then, four of the 24 coils constituting the stator winding 5 have coil ends extending across the groove opening side positions 44 or the groove bottom side positions 45 of the pair of slots 43. This way of traveling corresponds to the way of concentric circles described in the background art.

  The coil arrangement position will be described in detail. The coil ends of the two U-phase full-pitch winding coils 74U are connected to the seventh and eighth slots S7 and S8 from the groove side position 44 of the first and second slots S1 and S2. Crossing to the groove bottom side position 45, respectively. The coil ends of the two V-phase full-pitch winding coils 74V are concentric and circular from the groove portion side position 44 of the fifth and sixth slots S5 and S6 to the groove portion side position 44 of the eleventh and twelfth slots S11 and S12. It crosses each. The coil ends of the two W-phase full-pitch coils 74W are concentric and circular from the groove bottom side position 45 of the ninth and tenth slots S9, S10 to the groove bottom side position 45 of the fifteenth and sixteenth slots S15, S16. It crosses each.

  Further, the coil ends of the other two U-phase full-pitch winding coils 74U are arranged from the groove opening side position 44 of the thirteenth and fourteenth slots S13, S14 to the groove bottom side position 45 of the nineteenth and twentieth slots S19, S20. It crosses each. In addition, the coil ends of the other two W-phase full-pitch winding coils 74W are arranged in the third and fourth slots S3 and S4 from the groove-portion side position 44 of the 45th and 46th slots S45 and S46, which are not visible in FIG. Crossing to the groove bottom side position 45, respectively.

  In the ninth embodiment, only the two V-phase full-pitch coils 74V and the two W-phase full-pitch coils 74W described above have coil ends that are concentrically spaced. The coil ends of the 20 coils excluding the four concentric arcs are located at the groove bottom side position 45 of another slot 43 which is separated from the groove opening side position 44 of a certain slot 43 by 6 slot pitches. Cross each one. Further, the required number of interphase insulating papers 9 is three per one magnetic pole pair.

  Next, a method of assembling the stator winding 5 into the slot 43 of the stator core 4 will be described. The method of assembling the stator winding 5 described below is an embodiment of the method for manufacturing the motor device of the present invention. In the assembling work of the stator winding 5 in the ninth embodiment, two W-phase full-pitch coils 74W extending concentrically are specified at the beginning of assembly, and two V-phase full-pitch windings extending concentrically. The coil 74V is specified at the end of assembly.

  The operator first incorporates the first set of two W-phase full-pitch coils 74W in a concentric arc shape. More specifically, the operator places the pair of coil sides of the two W-phase full-pitch coils 74W on the groove bottom side position 45 of the ninth and fifteenth slots S9 and S15, and the tenth and sixteenth slots, respectively. It is inserted into the groove bottom side position 45 of S10 and S16 and incorporated. The operator secondly places the pair of coil sides of the first set of two U-phase full-pitch coils 68U into the groove-portion side position 44 of the thirteenth slot S13 and the groove-bottom side position of the nineteenth slot S19, respectively. 45, and the groove slot side position 44 of the fourteenth slot S14 and the groove bottom side position 45 of the twentieth slot S20. Hereinafter, in order from the left side to the right side in FIG. 33, the operator incorporates all-pitch coils 74U, 74V, and 74W.

  The operator 11thly places the pair of coil sides of the fourth set of two U-phase full-pitch coils 74U into the groove-portion side position 44 of the first slot S1 and the groove-bottom side position of the seventh slot S7, respectively. 45 and the groove slot side position 44 of the second slot S2 and the groove bottom side position 45 of the eighth slot S8. Here, the fourth set of two V-phase full-pitch winding coils 74V to be incorporated into the last 12th is installed between the fifth and sixth slots S5 and S6 and between the eleventh and twelfth slots S11 and S12. It is.

  At this time, the coil ends of the two W-phase full-pitch winding coils 74W incorporated at the beginning cross the groove bottom side position 45 from the ninth slot S9 to the fifteenth slot S15. Further, the coil ends of the two U-phase full-pitch winding coils 74U incorporated in the eleventh cross the groove bottom side position 45 of the fifth and sixth slots S5 and S6. Therefore, there is no coil that hinders the assembling work at the groove portion side position 44 from the fifth slot S5 to the twelfth slot S12. Thus, the operator can incorporate the fourth set of two V-phase full-pitch winding coils 74V into the groove portion side position 44 concentrically. More specifically, the operator connects the pair of coil sides of the two V-phase full-pitch winding coils 74V to the groove portion side position 44 of the fifth slot S5 and the eleventh slot S11, and the sixth slot S6 and the sixth slot S11, respectively. It can be incorporated by being inserted into the groove portion side position 44 of the 12 slot S12. Further, the operator may adjust the position of the coil side of the incorporated coil when the space factor in the slot 43 has a margin.

  In the ninth embodiment, it is not necessary to double the trouble of once inserting the coil side on one side of the assembled coil described in the first embodiment or the seventh embodiment outside the slot 43. In addition, although the shape and arrangement | positioning position of a coil are not partially uniform between the pole pair coils of an in-phase, and between three phases, since the ratio is small, the performance fall of a three-phase rotary electric machine is negligible.

  Next, a difference between the three-phase rotating electrical machine of the tenth embodiment and the first to ninth embodiments will be mainly described. In the tenth embodiment, the configuration of the rotor 3 and the shape of the stator core 4 are the same as those in the first embodiment, and the coil configuration and arrangement position of the stator 2I are different from those in the first embodiment. Therefore, the number of slots per pole N1 = 6, the number of slots per pole per phase N2 = 2, and an integer slot configuration. FIG. 34 is a diagram schematically illustrating the coil configuration of the stator 2I according to the tenth embodiment. Similarly to the ninth embodiment, in the tenth embodiment, a part of the coil end extends concentrically.

  In the tenth embodiment, each of the four U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of each phase of the stator winding 5 is connected in series to a first short-pitch coil 75U. , 75V, 75W and second short-pitch coils 76U, 76V, 76W. The coil pitch Pc of the first short winding coils 75U, 75V, and 75W is 5 and the coil pitch Pc of the second short winding coils 76U, 76V, and 76W is 5. The first short-pitch coils 75U, 75V, 75W and the second short-pitch coils 76U, 76V, 76W are full coils with the number of windings Nw10. The winding directions of the first short coil 75U, 75V, 75W and the second short coil 76U, 76V, 76W are opposite to each other. Then, four of the 24 coils constituting the stator winding 5 have coil ends extending across the groove opening side positions 44 or the groove bottom side positions 45 of the pair of slots 43. This way of traveling corresponds to the way of concentric circles described in the background art.

  The coil arrangement position will be described in detail. The coil end of the U-phase first short winding coil 75U extends from the groove portion side position 44 of the first slot S1 to the groove bottom portion position 45 of the sixth slot S6. The coil end of the U-phase second short winding coil 76U extends concentrically from the groove bottom side position 45 of the seventh slot S7 to the groove bottom side position 45 of the twelfth slot S12. The coil end of another U-phase first short coil 75U extends from the groove opening side position 44 of the thirteenth slot S13 to the groove bottom side position 45 of the eighteenth slot S18.

  The coil end of the V-phase first short winding coil 75V extends concentrically from the groove-portion side position 44 of the third slot S3 to the groove-portion side position 44 of the eighth slot S8. The coil end of the V-phase second short coil 76V extends concentrically from the groove bottom side position 45 of the ninth slot S9 to the groove bottom side position 45 of the fourteenth slot S14.

  The coil end of the W-phase first short coil 75W extends concentrically from the groove-portion side position 44 of the fifth slot S5 to the groove-portion side position 44 of the tenth slot S10. The coil end of the W-phase second short winding coil 76W extends from the groove opening side position 44 of the eleventh slot S11 to the groove bottom side position 45 of the sixteenth slot S16.

  Furthermore, the coil end of another U-phase first short winding coil 75U extends from the groove opening side position 44 of the thirteenth slot S13 to the groove bottom side position 45 of the eighteenth slot S18. The coil end of another V-phase second short winding coil 76V extends from the groove opening side position 44 of the 45th slot S45 to the groove bottom side position 45 of the second slot S2, which is not visible in FIG. The coil end of another W-phase second short winding coil 76W extends from the groove opening side position 44 of the 47th slot S47 to the groove bottom side position 45 of the fourth slot S4, which cannot be seen in FIG.

  As shown in FIG. 34, the U-phase first short-winding coil 75U faces the N magnetic pole 34N in a specific rotational phase of the rotor 3. On the other hand, U-phase second short winding coil 76U faces S magnetic pole 34S. That is, the coils constituting the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W of the stator 2I have a distributed configuration. The required number of interphase insulating papers 9 is 3 per one magnetic pole pair in the portion where the coil ends are concentrically isolated, and 6 per other magnetic pole pair in the other portions.

  In the tenth embodiment, only the U phase second short winding coil 76U, the V phase first short winding coil 75V, the V phase second short winding coil 76V, and the W phase first short winding coil 75W described above are provided. The coil ends are concentrically isolated. The coil ends of the 20 coils excluding the 4 concentric arcs are respectively located at the groove bottom side position 45 of another slot 43 separated from the groove opening side position 44 of a certain slot 43 by 5 slots. Crossing.

  In the operation of assembling the stator winding 5 into the slot 43 of the stator iron core 4, the U-phase second short-pitch coil 76U and the V-phase second short-pitch coil 76V whose coil ends cross concentrically are first assembled. Identified. Further, the V-phase first short winding coil 75V and the W-phase first short winding coil 75W whose coil ends are concentrically isolated are specified at the end of assembly. This method of assembling work is an embodiment of the method of manufacturing the motor device of the present invention. According to this, it is not necessary to double the trouble of once inserting the coil side on one side of the already installed coil out of the slot 43 and reassembling it.

<Aspects and Effects of Ninth and Tenth Embodiments>
The three-phase rotating electrical machine according to the ninth and tenth embodiments has a groove shape and a stator core 4 having a plurality of slots 43 each having a groove portion 48 and a groove bottom portion 49, and wound around the plurality of slots 43. A stator 2H, 2I having a stator winding 5 to which a plurality of mounted coils are connected, and a magnetic pole pair composed of an N magnetic pole 34N and an S magnetic pole 34S, and is rotatable with respect to the stator 2H, 2I And a mover (rotor 3) that is movably supported, wherein the plurality of coils are wound around a pair of slots among the plurality of slots 43, respectively, in the pair of slots. Each of the plurality of coils includes a pair of coil ends, and a pair of coil ends that connect ends of the pair of coil sides. The groove is disposed so as to extend from one groove opening side position 44 to the other groove bottom side position 45 of the pair of slots, and the remaining portions of the plurality of coils are such that each of the pair of coil ends is on the groove opening side of the pair of slots. It arrange | positions so that the positions 44 or groove bottom part side positions 45 may be crossed.

  In the ninth embodiment, the remaining portions of the plurality of coils are two V-phase full-pitch coils 74 </ b> V and two W-phase full-pitch coils 74 </ b> W whose coil ends extend concentrically. In the tenth embodiment, the remaining portions of the plurality of coils are a U-phase second short-pitch coil 76U, a V-phase first short-pitch coil 75V, and a V-phase second short-pitch coil 76V whose coil ends extend concentrically. , And W-phase first short winding coil 75W. Further, the remaining portions of the plurality of coils start and end when the stator winding 5 is incorporated into the stator core 4.

  According to this, unlike the first to eighth embodiments, it is not necessary to take the coil side of the assembled coil once out of the slot 43 and reassemble it. Therefore, the workability of the work of incorporating the stator winding 5 into the stator core 4 is significantly improved as compared with the prior art, and is better than the first to eighth embodiments. Furthermore, in the ninth embodiment, the number of necessary portions of the interphase insulating paper 9 is halved from the prior art. In the tenth embodiment, the required number of interphase insulating paper 9 is halved from the prior art at the portion where the coil ends cross concentrically.

  In the three-phase rotating electrical machine manufacturing method according to the ninth and tenth embodiments, when the stator winding 5 is assembled into the stator core 4, the remaining portions of the plurality of coils are set to the beginning and end of the assembly. According to this, this invention is not limited to the apparatus invention of a motor apparatus, It can also be implemented as invention of the manufacturing method of a motor apparatus. In the invention of the manufacturing method of the motor device, the same effect as that of the device invention of the motor device occurs.

<Application and Modification of Embodiment>
In each embodiment, the total number of magnetic poles nm and the number of slots 43 ns can be changed within a range in which the number of poles per pole N1 and the number of slots per pole per phase N2 are not changed. For example, when the total number of magnetic poles is changed to nm = 2k (k is a natural number), the number of slots 43 is set to ns = 12k in the first, second, and seventh to tenth embodiments, and in the third and fourth embodiments. The number of slots 43 may be ns = 9k, and the number of slots 43 may be ns = 15k in the fifth and sixth embodiments.

  Further, in the eighth embodiment, the configuration of the U-phase, V-phase, and W-phase pole pair coils 52U, 52V, 52W is connected in series with two all-node coils in the outer stage and two all-nodes in the inner stage. It can be a coil. Further, the configuration in which the coil ends described in the ninth and tenth embodiments cross the groove portion side positions 44 or the groove bottom portion side positions 45 can be implemented in combination with the first to eighth embodiments.

  Furthermore, the present invention is an outer rotor type configuration having a stator on the inner peripheral side and a rotor on the outer peripheral side, and an axial direction in which the stator and the rotor are arranged in the length direction of the axis AX across the air gap. It can also be implemented in a void-type configuration. In addition, the present invention can also be implemented by a linear motor device including a linear stator that forms a track and a linear mover that is supported so as to be movable along the track. Various other modifications and applications of the present invention are possible.

1: Three-phase rotating electrical machine (motor device) 2, 2A to 2I, 2X, 2Y: Stator 3: Rotor 34N: N magnetic pole 34S: S magnetic pole 4: Stator core 43: Slot 43i: Slot inner stage position 43o : Outer slot position S1 to S60: First to 60th slot 44: Groove opening side position 44i: Inner groove opening side position 44o: Outer groove opening side position 45: Groove bottom side position 45i: Inner groove bottom side Position 45o: Outer groove bottom side position 5: Stator winding 51: Coil 52U, 52V, 52W: U phase, V phase, W phase pole pair coil 53U, 53V, 53W: U phase, V phase, W phase length Coiled coils 54U, 54V, 54W: U phase, V phase, W phase short coiled coils 55U, 55V, 55W: U phase, V phase, W phase full-pitch coils 56U, 56V, 56W: U phase, V phase W phase long winding coil 57U, 57V, 57W U phase, V phase, W phase short winding coil 58U, 58V, 58W: U phase, V phase, W phase long winding coil 59U, 59V, 59W: U phase, V phase, W phase short winding coil 60U, 60V, 60W: U phase, V phase, W phase first short winding coil 61U, 61V, 61W: U phase, V phase, W phase second short winding coil 62U, 62V, 62W: U phase, V phase, W-phase long-pitch coil 63U, 63V, 63W: U-phase, V-phase, W-phase first short-pitch coil 64U, 64V, 64W: U-phase, V-phase, W-phase second short-pitch coil 65U, 65V, 65W: U phase, V phase, W phase first short winding coil 66U, 66V, 66W: U phase, V phase, W phase second short winding coil 67U, 67V, 67W: U phase, V phase, W phase Third short-pitch coil 68U, 68V, 68W: U-phase, V-phase, W-phase full-pitch coil 70U, 70V, 70W: U-phase, V-phase, W-phase outer step long winding coil 71U, 71V, 71W: U-phase, V-phase, W-phase outer step short-pitch winding coil 72U, 72V, 72W: U-phase, V-phase, W-phase inner step length winding Coil 73U, 73V, 73W: U-phase, V-phase, W-phase internal short-pitch winding coil 74U, 74V, 74W: U-phase, V-phase, W-phase full-pitch winding coil 75U, 75V, 75W: U-phase, V-phase , W phase first short winding coil 76U, 76V, 76W: U phase, V phase, W phase second short winding coil

Claims (12)

A stator iron core having a plurality of slots each having a groove shape and a groove opening portion and a groove bottom portion, and a stator winding having a plurality of coils wound around the plurality of slots connected thereto When,
A motor device having a magnetic pole pair composed of an N magnetic pole and an S magnetic pole, and a mover supported rotatably or movable relative to the stator,
The plurality of coils are:
A pair of coil sides respectively wound around a pair of slots of the plurality of slots and housed in the pair of slots, and a pair of coil ends connecting ends of the pair of coil sides Each has and
And at least one of the coil pitch and the number of windings between the pair of coil sides is different from each other, and
The motor device is arranged such that each of the pair of coil ends extends from a position on one groove opening side of the pair of slots to a position on the other groove bottom side of the pair of slots. The plurality of coils are:
From the number of slots of the stator iron core divided by the total number of magnetic poles of the N magnetic pole and the S magnetic pole, the long-pitch coil having a longer coil pitch than the number of slots of each magnetic pole, And a short winding coil having a short coil pitch, and / or
A full coil in which the number of windings is relatively large and each of the pair of coil sides occupies the whole of the pair of slots, and each of the pair of coil sides in which the number of windings is relatively small The motor device according to claim 1, further comprising a half coil that occupies a half of each of the pair of slots. A stator iron core having a plurality of slots each having a groove shape and a groove opening portion and a groove bottom portion, and a stator winding having a plurality of coils wound around the plurality of slots connected thereto When,
A motor device having a magnetic pole pair consisting of an N magnetic pole and an S magnetic pole, and a mover supported rotatably or movable relative to the stator,
The number of slots per phase obtained by dividing the number of the plurality of slots of the stator iron core by the total number of magnetic poles of the N magnetic pole and the S magnetic pole, and further dividing by the number of phases of the stator windings. An integer greater than or equal to 2,
The plurality of coils are:
A pair of coil sides respectively wound around a pair of slots of the plurality of slots and housed in the pair of slots, and a pair of coil ends connecting ends of the pair of coil sides Each has and
The coil pitch between the pair of coil sides and the number of windings are one type equal to each other, and
In a specific rotational phase or a specific movement position of the mover, the movable element has a collective configuration facing one of the N magnetic pole and the S magnetic pole, and
The motor device is arranged such that each of the pair of coil ends extends from a position on one groove opening side of the pair of slots to a position on the other groove bottom side of the pair of slots. The plurality of coils are:
A full-pitch winding coil in which the number of slots of the stator iron core divided by the total number of magnetic poles of the N magnetic pole and the S magnetic pole is equal to the coil pitch, and
The motor device according to claim 3, wherein each of the pair of coil sides is a full coil that occupies each of the pair of slots. A stator iron core having a plurality of slots each having a groove shape and a groove opening portion and a groove bottom portion, and a stator winding having a plurality of coils wound around the plurality of slots connected thereto When,
A motor device having a magnetic pole pair consisting of an N magnetic pole and an S magnetic pole, and a mover supported rotatably or movable relative to the stator,
The number of slots per phase obtained by dividing the number of the plurality of slots of the stator iron core by the total number of magnetic poles of the N magnetic pole and the S magnetic pole, and further dividing by the number of phases of the stator windings. An integer,
The plurality of coils are each composed of an even number of divided coils that are equal in number of windings and connected in series,
The even number of split coils is:
A pair of coil sides respectively wound around a pair of slots of the plurality of slots and housed in the pair of slots, and a pair of coil ends connecting ends of the pair of coil sides Each has and
Each of the pair of coil ends is disposed so as to extend from one groove opening side position of the pair of slots to the other groove bottom side position of the pair of slots,
Half of the even number of split coils are disposed in close proximity to one of the groove opening and the groove bottom of the slot, and the N magnetic pole and the magnetic pole at a specific rotational phase or a specific movement position of the mover. It has a consolidated configuration facing one of the S magnetic poles,
The remainder of the even number of split coils is disposed close to the other of the groove opening and the groove bottom of the slot, and is equivalent to an electrical angle of 180 ° with respect to half of the even number of split coils. A motor device which is arranged in a shifted manner and has a collective configuration facing the other of the N magnetic pole and the S magnetic pole at a specific rotational phase or a specific movement position of the mover. The even number of split coils is:
A full-pitch coil in which the number of slots in the stator core divided by the total number of magnetic poles of the N magnetic pole and the S magnetic pole is equal to the coil pitch between the pair of coil sides Or
The motor device according to claim 5, comprising: a long-pitch coil having a longer coil pitch than the number of slots per pole, and a short-pitch coil having a coil pitch shorter than the number of slots per pole. A stator iron core having a plurality of slots each having a groove shape and a groove opening portion and a groove bottom portion, and a stator winding having a plurality of coils wound around the plurality of slots connected thereto When,
A motor device having a magnetic pole pair composed of an N magnetic pole and an S magnetic pole, and a mover supported rotatably or movable relative to the stator,
The plurality of coils are respectively wound around a pair of slots among the plurality of slots, and connect a pair of coil sides accommodated in the pair of slots and ends of the pair of coil sides. Each having a pair of coil ends,
A part of the plurality of coils is arranged such that each of the pair of coil ends extends from one groove opening side position of the pair of slots to the other groove bottom side position of the pair of slots,
The remaining portions of the plurality of coils are motor devices arranged such that each of the pair of coil ends crosses the groove opening side positions or the groove bottom side positions of the pair of slots.   The motor device according to claim 7, wherein the remaining portions of the plurality of coils start and end when the stator winding is incorporated into the stator core.   The motor device according to claim 1, wherein the stator winding has three phases.   The motor device according to claim 1, wherein the stator has a rotationally symmetric shape, and the movable element is a rotor that is rotatably supported with respect to the stator.   The motor device according to any one of claims 1 to 9, wherein the stator has a linear shape constituting a track, and the mover is a linear mover supported so as to be movable along the track. . A method of manufacturing a motor device according to claim 7 or 8,
A method of manufacturing a motor device, wherein when the stator winding is assembled into the stator iron core, the remaining portions of the plurality of coils start to be incorporated and finish the incorporation.

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