JP2015053790A - Stator of rotating electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture, in a manufacturing process for stators 1 of rotating electric machines 3 utilizing developed iron cores 5, stators 1 corresponding to all-node concentrated winding without using any coil-split products.SOLUTION: In a stator 1, every coil 7 can be one of a coil 7a of 180-degree pitch in electrical angle, a coil 7b of 120-degree pitch in electrical angle and a coil 7c of 60-degree pitch in electrical angle, and there exists a specific arrangement 13 positioned on each of one side and the other side of the coil 7c in the circumferential direction without allowing the coil 7b to overlap the coil 7c in the circumferential direction. The coils 7b and the coils 7c included in the specific arrangements 13 are out of phase with each other. Further, the coil 7c included in a specific arrangement 13A and a coil 7 in phase with the coil 7c included in the specific arrangement 13A but not included in the specific arrangement 13A are so disposed that the vectors of the magneto-motive force are reverse in direction between in and out. Coils 7c included in specific arrangements 13B and 13C are similarly disposed.

Description

  The present invention relates to a stator of a rotating electric machine, and more particularly to a winding structure of a stator.

  Conventionally, in a stator 100 of a rotary electric machine with concentrated windings for all nodes, as shown in FIGS. 11 and 12, a stator core that is linearly expanded (hereinafter sometimes referred to as a developed iron core 101) has been used. Manufacturing methods are known. And according to this well-known manufacturing method, while mounting | wearing the tooth | gear 102 of the expansion | deployment iron core 101 with the coil | winding 103 which makes three phases, the expansion | deployment iron core 101 is bent and end parts are integrated and it is made cyclic | annular.

However, according to this manufacturing method, it is necessary to divide one winding 103 into two winding division bodies 104 at both ends of the developed iron core 101 (see, for example, Patent Document 1). For this reason, when bending the developed iron core 101 and integrating the end portions, it is necessary to connect the winding divided bodies 104 to finish them into one winding 103, and the process is complicated.
Therefore, in the method for manufacturing the stator 100 using the developed iron core 101, there is a demand for a method capable of manufacturing the stator 100 corresponding to all-node concentrated winding without using the winding divided body 104.

Japanese Patent No. 3707606

  The present invention has been made to solve the above-mentioned problems, and its object is to concentrate all the nodes without using a winding division in a method of manufacturing a stator of a rotating electrical machine using a developed iron core. It is to manufacture a stator equivalent to a winding.

According to the first invention of the present application, the stator of the rotating electrical machine is mounted with the windings forming three phases on the teeth of the stator core that is linearly expanded, and the ends of the stator core are bent and integrated with each other. It is provided by making it into an annular shape.
Each winding has an electrical angle of 180 ° pitch, an electrical angle of 120 ° pitch, or an electrical angle of 60 ° pitch. And the specific arrangement | positioning which the coil | winding of an electrical angle 120 degree | times pitch is located in the circumferential direction one side and the other side of the coil | winding of an electrical angle 60 degree | times pitch without overlapping the coil | winding of an electrical angle 60 degree | times pitch and a circumferential direction Exists.

  All three windings included in the specific arrangement are out of phase with each other. Furthermore, the windings having the same phase as the winding of the electrical angle of 60 degrees included in the specific arrangement and not included in the specific arrangement and the winding of the electrical angle of 60 degrees included in the specific arrangement are magnetomotive force The vectors are provided so that the inside and outside directions are reversed.

  Thereby, a magnetomotive force distribution equivalent to that of the all-node concentrated winding stator can be obtained. Further, by arranging the windings having an electrical angle of 60 degrees and the electrical angles having a pitch of 120 degrees, which constitute the specific arrangement, at the respective ends of the developed iron core, the winding divided body becomes unnecessary. For this reason, in the method for manufacturing a stator for a rotating electrical machine using a developed iron core, a stator corresponding to all-node concentrated winding can be manufactured without using a winding split body.

According to the second invention of the present application, a winding with an electrical angle of 120 degrees is arranged on either one of the circumferential sides of a winding with an electrical angle of 60 degrees and the winding with a winding with an electrical angle of 60 degrees on either side. There is a specific arrangement located without overlapping in the direction. Further, the two windings included in the specific arrangement are in phase with each other. Further, the magnetomotive force vectors are in the same direction as the two windings that are in phase with the two windings included in the specific arrangement and that are not included in the specific arrangement and the two windings included in the specific arrangement. It is provided as follows.
As a result, as in the first aspect of the invention, in the method for manufacturing a stator for a rotating electrical machine using a developed iron core, a stator corresponding to all-node concentrated winding can be manufactured without using a winding split body.

According to the third invention subordinate to the first and second inventions of the present application, there are three specific arrangements, and the three specific arrangements have different phase configurations.
Thereby, the induced voltage, torque, etc. which generate | occur | produce in each phase can be kept equal, and the balance between three phases can be taken.

According to the fourth invention subordinate to the third invention of the present application, there are six specific arrangements, and the six specific arrangements form three combinations of two specific arrangements opposed at a mechanical angle of 180 degrees, In the combination, the phase configurations are the same.
Thereby, the balance of the radial direction force (radial force) which acts between a rotor and a stator can be taken.

It is explanatory drawing which shows the phase structure of a coil | winding with an expansion | deployment iron core (Example 1). It is explanatory drawing which shows the phase structure of a coil | winding with a cyclic | annular iron core (Example 1). It is explanatory drawing which shows the phase structure of a coil | winding with an expansion | deployment iron core (Example 2). It is explanatory drawing which shows the phase structure of a coil | winding with a cyclic | annular iron core (Example 3). (Example 4) which is explanatory drawing which shows the phase structure of a coil | winding with an annular core. It is explanatory drawing which shows the phase structure of a coil | winding with an expansion | deployment iron core (Example 5). It is explanatory drawing which shows the phase structure of a coil | winding with a cyclic | annular iron core (Example 5). It is explanatory drawing which shows the phase structure of a coil | winding with an expansion | deployment iron core (modification). It is explanatory drawing which shows the phase structure of a coil | winding with an expansion | deployment iron core (modification). It is explanatory drawing which shows the phase structure of a coil | winding with an expansion | deployment iron core (modification). It is explanatory drawing which shows the phase structure of a coil | winding with an expansion | deployment iron core (conventional example). It is explanatory drawing which shows the phase structure of a coil | winding with an annular core (conventional example).

  The stator of the rotating electrical machine of the embodiment will be described based on the following Examples 1 to 14.

[Configuration of Example 1]
The structure of the stator 1 of Example 1 is demonstrated using FIG. 1 and FIG.
The stator 1 constitutes, for example, an inner rotor type rotating electrical machine 3 in which a rotor 2 is arranged on the inner diameter side, and constitutes a synchronous machine, an induction machine, and the like. The stator 1 is provided as follows.

  That is, a winding 7 having three phases of U phase, V phase, and W phase is attached to a tooth 6 of a stator core 4 (hereinafter also referred to as a developed core 5) that is linearly expanded. Then, the developed iron core 5 is bent so that the teeth 6 protrude toward the inner diameter side, and ends thereof are integrated into an annular shape (hereinafter, the developed iron core 5 having an annular shape may be referred to as an annular iron core 8). .)

  Here, for convenience of explanation, the side that proceeds to the right in FIG. 1 or the like with respect to the developed core 5 and the side that proceeds in the clockwise direction in FIG. 1 is defined as the other side in the circumferential direction, and the side that proceeds counterclockwise in FIG.

Further, the teeth 6 may be sequentially referred to as teeth 6 ₁ , 6 ₂ ,..., 6 _t from the other circumferential end of the developed iron core 5 to one side. Note that t corresponds to the number of teeth 6 in each embodiment. Moreover, in order to avoid complexity in the drawings, only a part of the symbols 6 _{1 to} 6 _t is displayed as necessary. Further, in FIG. 1 and the like, the U-phase, V-phase, and W-phase windings 7 are shown by a solid line, a rough dotted line, and a fine dotted line, respectively.

  In the stator core 4, a large number of teeth 6 protrude toward the inner diameter side of the back yoke 10, and a slot 11 is formed by two teeth 6 adjacent in the circumferential direction. Further, the slot 11 includes a normal slot 11a in which only one winding 7 is inserted and a unique slot 11b in which two or more windings 7 are inserted.

The circumferential width of the singular slot 11b of the first embodiment is the same as the circumferential width of the normal slot 11a.
In addition, at the tip of the tooth 6, a convex portion 6 a that extends to one side and the other side in the circumferential direction is provided. And the distance of the circumferential direction of the convex part 6a extended from each of the two teeth 6 which form one slot 11 is equal in all the slots 11.

Hereinafter, regarding the stator 1 of the first embodiment, the arrangement of the teeth 6 and the slots 11, the phase configuration of the winding 7, and the like will be described.
In the stator 1 of the first embodiment, the number of poles is 8, the number of teeth 6 or the number of slots 11 is 24, the total number of windings is 15, and there are five windings for each phase. Of the 24 slots 11, there are 6 singular slots 11b, and each of these 6 singular slots 11b contains two windings 7 (the number of normal slots 11a is 18). ). And the expansion | deployment iron core 5 is provided so that one specific slot 11b may be divided | segmented into 1/2 in the middle of the circumferential direction.

  The winding 7 according to the first embodiment is any one of a winding 7a having an electrical angle of 180 degrees, a winding 7b having an electrical angle of 120 degrees, and a winding 7c having an electrical angle of 60 degrees. In the arrangement of the winding 7 of the first embodiment, there is a specific arrangement 13 in which the winding 7b is positioned on the one side and the other side of the winding 7c without overlapping the winding 7c in the circumferential direction. To do.

  Further, the two windings 7b and the one winding 7c included in the specific arrangement 13 are all out of phase with each other. Further, the stator 1 according to the first embodiment includes three specific arrangements 13, and the three specific arrangements 13 have different phase configurations from each other (hereinafter, the winding 7 c is a U-phase, V Phases and W phases may be referred to as first, second, and third specific arrangements 13A, 13B, and 13C, respectively.)

As described above, according to the stator 1 of the first embodiment, the winding 7 is arranged as follows, for example.
First, the winding 7b of the W-phase are mounted across the teeth ₆ 1, _{6 2,} winding 7a of V-phase is mounted across the teeth ₆ 2-6 _4. Further, the U-phase winding 7 a is mounted across the teeth 6 _{4 to} 6 ₆ , and the W-phase winding 7 b is mounted across the teeth 6 ₆ and 6 ₇ . Then, the winding 7c of the U-phase are mounted on the teeth 6 _8.

Subsequently, the V-phase winding 7 b is mounted across the teeth 6 ₉ and 6 ₁₀ , and the U-phase winding 7 a is mounted across the teeth 6 _{10 to} 6 ₁₂ . Furthermore, W-phase winding 7a is mounted astride the teeth _{6 12-6 14,} winding 7b of the V-phase are mounted across the teeth _{6 14, 6 15.} Then, the winding 7c of the W-phase are mounted on the teeth _{6 16.}
Furthermore, the winding 7b of the U-phase are mounted across the teeth _{6 17, 6 to 18,} W-phase winding 7a is mounted across the teeth _{6 18-6 20.} Also, the windings 7a of the V phase are mounted across the teeth _{6 20-6 22,} winding 7b of the U-phase are mounted across the teeth _{6 22, 6 23.} Then, the winding 7c of V-phase is attached to the teeth _{6 24.}

Then, the teeth ₆ 6 _{6 7} loaded W phase winding 7b, the teeth _{6 8} loaded U-phase winding 7c, or the teeth _{6 9, 6} windings of the mounted V-phase ₁₀ The first specific arrangement 13A is formed by 7b. Further, the teeth _{6 14, 6 15} loaded V-phase winding 7b, the teeth _{6 16} loaded W-phase windings 7c, or the teeth _{6 17, 6 18} windings of the mounted U-phase A third specific arrangement 13C is formed by 7b.

Furthermore, the teeth _{6 22, 6 23} loaded U-phase winding 7b, the teeth ₆ of the V-phase attached to ₂₄ windings 7c, or the teeth ₆₁ and ₆₂ windings of the attached W phase ₂ The second specific arrangement 13B is formed by 7b.
According to the stator 1 of the first embodiment, the winding 7c and the winding 7b constituting the second specific arrangement 13B are arranged at one end and the other end in the circumferential direction of the developed core 5, respectively.

Here, the winding 7c in phase with the winding 7c included in the first specific arrangement 13A and not included in the first specific arrangement 13A, and the winding 7c included in the first specific arrangement 13A Is provided so that the magnetomotive force vector is in the opposite direction. That is, a winding 7c of the U-phase attached to the tooth 6 _8, another U-phase winding 7a, and 7b, vector magnetomotive force is provided so that the inner and outer opposite.

Similarly, the winding 7c that is in phase with the winding 7c included in the second specific arrangement 13B and is not included in the second specific arrangement 13B, and the winding 7c included in the second specific arrangement 13B Is provided so that the magnetomotive force vector is in the opposite direction. That is, a winding 7c of the V phase, which is mounted on the teeth 6 _24, other V-phase winding 7a, and 7b, vector magnetomotive force is provided so that the inner and outer opposite.

Similarly, the winding 7c that is in phase with the winding 7c included in the third specific arrangement 13C and is not included in the third specific arrangement 13C, and the winding 7c included in the third specific arrangement 13C Is provided so that the magnetomotive force vector is in the opposite direction. That is, a winding 7c of the W-phase which is mounted on the teeth 6 _16, other W-phase winding 7a, and 7b, vector magnetomotive force is provided so that the inner and outer opposite.

In order to reverse the magnetomotive force vector between the winding 7c and the windings 7a and 7b belonging to the same phase, the following method can be used.
For example, only the winding 7c is wound in the opposite direction to the windings 7a and 7b, or only the winding 7c is connected in the opposite direction from the inside and outside of the windings 7a and 7b, so that the magnetomotive force vector is reversed in the inside and outside Can do.

[Effect of Example 1]
The stator 1 according to the first embodiment is provided by attaching a winding 7 having three phases to a tooth 6 of a developed iron core 5 and bending the developed iron core 5 to integrate end portions into an annular iron core 8. . The winding 7 is one of a winding 7a having an electrical angle of 180 degrees, a winding 7b having an electrical angle of 120 degrees, and a winding 7c having an electrical angle of 60 degrees. And the specific arrangement | positioning 13 where the winding 7b is located in the circumferential direction one side and the other side of the winding 7c without overlapping the winding 7c in the circumferential direction exists.

Further, the two windings 7b and 7c included in the specific arrangement 13 are all out of phase with each other.
Further, a winding 7c (winding 7c of the U-phase attached to the tooth 6 ₈₎ included in the first specific arrangement 13A, a winding 7c and the phase included in the first specific arrangement 13A, and, The windings 7 (other U-phase windings 7a and 7b) not included in the first specific arrangement 13A are provided such that the magnetomotive force vector is in the opposite direction. The windings 7c included in the second and third specific arrangements 13B and 13C are also provided in the same manner.

  Thereby, a magnetomotive force distribution equivalent to the concentrated winding of all nodes can be obtained. Moreover, the winding division body 101 (refer FIG. 11) becomes unnecessary by arrange | positioning the coil | winding 7c and the coil | winding 7b which comprise the one specific arrangement | positioning 13 at each end of the expansion | deployment iron core 5. FIG. For this reason, in the manufacturing method of the stator 1 using the developed iron core 5, the stator 1 corresponding to all-node concentrated winding can be manufactured without using the winding divided body 101.

The stator 1 has three specific arrangements 13, and the three specific arrangements 13 </ b> A to 13 </ b> C have mutually different phase configurations.
Thereby, the induced voltage, torque, etc. which generate | occur | produce in each phase can be kept equal, and the balance between three phases can be taken.

[Configuration of Example 2]
As in the stator 1 of the first embodiment, the stator 1 of the second embodiment has 8 poles, the number of slots 11 or teeth 6 is 24, and the total number of windings 7 is as shown in FIG. There are 18 windings 7 for each phase. Of the 24 slots 11, there are 12 unique slots 11b and 12 normal slots 11a.

  According to the stator 1 of the second embodiment, the winding 7 is either the winding 7b having an electrical angle of 120 degrees or the winding 7c having an electrical angle of 60 degrees, and the winding 7a having an electrical angle of 180 degrees is the winding 7a. not exist. Further, the stator 1 according to the second embodiment has six specific arrangements 13, and the six specific arrangements 13 form three combinations of the two specific arrangements 13 opposed at a mechanical angle of 180 degrees. In the combination, the phase configurations are the same.

As described above, according to the stator 1 of the second embodiment, the winding 7 is arranged as follows, for example.
First, the winding 7b of the W-phase are mounted across the teeth ₆ 1, _{6 2,} winding 7b of the V-phase are mounted across the teeth ₆ 2, _{6 3.} Then, the winding 7c of the W-phase are mounted on the teeth 6 _4. Subsequently, the U-phase winding 7 b is mounted across the teeth 6 ₅ , 6 ₆ , and the W-phase winding 7 b is mounted across the teeth 6 ₆ , 6 ₇ . Then, the winding 7c of the U-phase are mounted on the teeth 6 _8.

Further, the V-phase winding 7 b is mounted across the teeth 6 ₉ , 6 ₁₀ , and the U-phase winding 7 b is mounted across the teeth 6 ₁₀ , 6 ₁₁ . Then, the winding 7c of V-phase is attached to the teeth _{6 12.} Subsequently, the winding 7b of the W-phase are mounted across the teeth _{6 13, 6 14,} winding 7b of the V-phase are mounted across the teeth _{6 14, 6 15.} Then, the winding 7c of the W-phase are mounted on the teeth _{6 16.}

Furthermore, the winding 7b of the U-phase are mounted across the teeth _{6 17, 6 18,} winding 7b of the W-phase are mounted across the teeth _{6 18, 6 19.} Then, the winding 7c of the U-phase are mounted on the teeth _{6 20.} Subsequently, the winding 7b of the V-phase are mounted across the teeth _{6 21, 6 22,} winding 7b of the W-phase are mounted across the teeth _{6 22, 6 23.} Then, the winding 7c of V-phase is attached to the teeth _{6 24.}

Then, the teeth ₆ 2, _{6 3} loaded V-phase winding 7b, the teeth _{6 4} loaded W-phase windings 7c, or the teeth ₆ 5, ₆ of ₆ loaded U-phase winding A third specific arrangement 13C is formed by 7b. Further, the teeth _{6 14, 6 15} loaded V-phase winding 7b, the teeth _{6 16} loaded W-phase windings 7c, or the teeth _{6 17, 6 18} windings of the mounted U-phase A third specific arrangement 13C is formed by 7b. And these two 3rd specific arrangement | positioning 13C forms the combination which opposes with a mechanical angle of 180 degree | times.

Further, the teeth ₆ 6 _{6 7} loaded W phase winding 7b, the teeth _{6 8} loaded U-phase winding 7c, or the teeth _{6 9, 6} windings of the mounted V-phase ₁₀ The first specific arrangement 13A is formed by 7b. In addition, a W-phase winding 7b attached to the teeth 6 ₁₈ and 6 ₁₉ , a U-phase winding 7c attached to the teeth 6 ₂₀ , and a V-phase winding attached to the teeth 6 ₂₁ and 6 ₂₂ The first specific arrangement 13A is formed by 7b. And these two 1st specific arrangement | positioning 13A forms the combination which opposes with a mechanical angle of 180 degree | times.

Furthermore, the teeth _{6 10, 6 11} loaded U-phase winding 7b, the V-phase that is attached to the tooth _{6 12} windings 7c, or the teeth _{6 13, 6} windings of the attached W phase ₁₄ The second specific arrangement 13B is formed by 7b. Further, the teeth _{6 22, 6 23} loaded U-phase winding 7b, the teeth ₆ of the V-phase attached to ₂₄ windings 7c, or the teeth ₆₁ and ₆₂ windings of the attached W phase ₂ The second specific arrangement 13B is formed by 7b. And these two 2nd specific arrangement | positioning 13B forms the combination which opposes with a mechanical angle of 180 degree | times.
According to the stator 1 of the second embodiment, the winding 7c and the winding 7b constituting the second specific arrangement 13B are arranged at one end and the other end in the circumferential direction of the developed core 5, respectively.

Here, the winding 7c in phase with the winding 7c included in the first specific arrangement 13A and not included in the first specific arrangement 13A, and the winding 7c included in the first specific arrangement 13 Is provided so that the magnetomotive force vector is in the opposite direction. That is, a winding 7c of the teeth 6 _8, 6 ₂₀ loaded U-phase, the winding 7b of the other U-phase vector of the magnetomotive force is provided so that the inner and outer opposite.

Similarly, the winding 7c that is in phase with the winding 7c included in the second specific arrangement 13B and is not included in the second specific arrangement 13B, and the winding 7c included in the second specific arrangement 13B Is provided so that the magnetomotive force vector is in the opposite direction. That is, a winding 7c of the teeth 6 _12, 6 ₂₄ loaded V-phase, and the winding 7b of the other V-phase, vector magnetomotive force is provided so that the inner and outer opposite.

Similarly, the winding 7c that is in phase with the winding 7c included in the third specific arrangement 13C and is not included in the third specific arrangement 13C, and the winding 7c included in the third specific arrangement 13C Is provided so that the magnetomotive force vector is in the opposite direction. That is, the W-phase winding 7c attached to the teeth 6 ₄ and 6 ₁₆ and the other W-phase winding 7b are provided so that the magnetomotive force vectors are in the opposite directions.

[Effect of Example 2]
According to the stator 1 of the second embodiment, there are six specific arrangements 13, and the six specific arrangements 13 form three combinations of the two specific arrangements 13 opposed at a mechanical angle of 180 degrees, In the combination, the phase configurations are the same.
Thereby, the balance of the radial force (radial force) acting between the stator 1 and the rotor 2 can be achieved.

Example 3
According to the stator 1 of the third embodiment, in the stator 1 of the first embodiment, the cross-sectional area perpendicular to the radial direction of the unique slot 11b is made larger than the cross-sectional area perpendicular to the radial direction of the normal slot 11a. (See FIG. 4).
Thereby, the overlap of the windings 7 in the specific arrangement 13 in the circumferential direction can be reliably prevented. Here, in the stator 1 according to the third embodiment, the tooth 6 that forms the singular slot 11b is made narrower than the tooth 6 that forms the normal slot 11a, thereby reducing the cross-sectional area of the singular slot 11b. Is bigger than.

Even in the stator 1 of the third embodiment, the circumferential distance between the convex portions 6 a in the slot 11 is the same in all the slots 11.
Accordingly, even if the cross-sectional areas of the normal slot 11a and the singular slot 11b are different, the distribution of the magnetic flux density in the gap in the circumferential direction can be smoothed, so that ripples such as torque of the rotating electrical machine 3 can be suppressed. it can.

Example 4
In the stator 1 of the fourth embodiment, as shown in FIG. 5, the cross-sectional area of the singular slot 11b is made larger than the cross-sectional area of the normal slot 11a in a manner different from that of the third embodiment. That is, by tilting the two teeth 6 at both ends in the circumferential direction toward the middle tooth 6 among the three teeth 6 (the three teeth 6 are arranged in the circumferential direction) forming the unique slot 11b. The cross-sectional area of the unique slot 11b is larger than the cross-sectional area of the normal slot 11a.

[Configuration of Example 5]
The structure of the stator 1 of Example 5 is demonstrated using FIG. 6 and FIG.
In the stator 1 of the fifth embodiment, the number of poles is 8, the number of slots 11 or teeth 6 is 24, the total number of windings 7 is 15, and there are five windings 7 for each phase. Of the 24 slots 11, there are three singular slots 11b, and each of the three singular slots 11b has three windings 7 (the number of normal slots 11a is 21). ). And the expansion | deployment iron core 5 is provided so that one specific slot 11b may be divided | segmented into 1/2 in the middle of the circumferential direction.

  The winding 7 of the fifth embodiment is any one of a winding 7a having an electrical angle of 180 degrees, a winding 7b having an electrical angle of 120 degrees, and a winding 7c having an electrical angle of 60 degrees. In the arrangement of the winding 7 in the fifth embodiment, there is a specific arrangement 15 in which the winding 7b is positioned on one side in the circumferential direction of the winding 7c without overlapping the winding 7c in the circumferential direction.

  The two windings 7b and 7c included in the specific arrangement 15 are in phase with each other. Furthermore, the stator 1 according to the fifth embodiment includes three specific arrangements 15, and the three specific arrangements 15 have different phase configurations (hereinafter, the winding 7 c is a U-phase, V Phases and W phases may be referred to as first, second, and third specific arrangements 15A, 15B, and 15C, respectively.)

As described above, according to the stator 1 of the fifth embodiment, the winding 7 is arranged as follows, for example.
First, the winding 7b of the W-phase are mounted across the teeth ₆ 1, _{6 2,} winding 7a of V-phase is mounted across the teeth ₆ 2-6 _4. Also, the windings 7a of U-phase are mounted across the teeth ₆ 4 to 6 _6, W-phase winding 7a is mounted across the teeth ₆ 6-6 _8. Then, the winding 7c of V-phase is attached to the tooth 6 _8.

Subsequently, the V-phase winding 7 b is mounted across the teeth 6 ₉ and 6 ₁₀ , and the U-phase winding 7 a is mounted across the teeth 6 _{10 to} 6 ₁₂ . Furthermore, W-phase winding 7a is mounted astride the teeth _{6 12-6 14,} winding 7a of V-phase is mounted across the teeth _{6 14-6 16.} Then, the winding 7c of the U-phase are mounted on the teeth _{6 16.}
Furthermore, the winding 7b of the U-phase are mounted across the teeth _{6 17, 6 to 18,} W-phase winding 7a is mounted across the teeth _{6 18-6 20.} Also, the windings 7a of the V phase are mounted across the teeth _{6 20-6 22,} winding 7a of the U-phase are mounted across the teeth _{6 22-6 24.} Then, the winding 7c of the W-phase are mounted on the teeth _{6 24.}

Then, the V-phase winding 7c mounted on the teeth _{6 8,} and the second specific arrangement 15B is formed by the tooth _{6 9,} the V-phase attached to _{6 10} winding 7b. Further, the winding 7c of the U-phase that is attached to the teeth _{6 16,} and, the first specific arrangement 15A is formed by the teeth _{6 17, 6 18} loaded U-phase winding 7b.

Furthermore, the winding 7c of the W-phase which is mounted on the teeth _{6 24,} and a third particular arrangement 15C are formed by the teeth _61, the _{6 2} loaded W-phase winding 7b.
According to the stator 1 of the first embodiment, the winding 7c and the winding 7b constituting the third specific arrangement 15C are arranged at one end and the other end in the circumferential direction of the developed core 5, respectively.

Here, the winding 7 is in phase with the two windings 7b and 7c included in the first specific arrangement 15A and is not included in the first specific arrangement 15A, and included in the first specific arrangement 15A. The two windings 7b and 7c are provided so that the magnetomotive force vectors are in the same direction inside and outside. That is, the winding 7c of the U-phase that is attached to the teeth _{6 16,} and a winding 7b of the teeth _{6 17, 6 18} loaded U-phase, the winding 7a of the other U-phase, the magnetomotive force The vectors are provided in the same direction inside and outside.

Similarly, the winding 7 is in phase with the two windings 7b and 7c included in the second specific arrangement 15B and is not included in the second specific arrangement 15B, and is included in the second specific arrangement 15B. The two windings 7b and 7c are provided so that the magnetomotive force vectors are in the same direction inside and outside. That is, the winding 7c of the V phase, which is mounted on the teeth 6 _8, and a winding 7b of the teeth 6 _9, 6 ₁₀ in the mounted V-phase, and the winding 7a of the other V-phase, the magnetomotive force The vectors are provided in the same direction inside and outside.

Similarly, the winding 7 is in phase with the two windings 7b and 7c included in the third specific arrangement 15C and is not included in the third specific arrangement 15C, and is included in the third specific arrangement 15C. The two windings 7b and 7c are provided so that the magnetomotive force vectors are in the same direction inside and outside. That is, the winding 7c of the W-phase which is mounted on the teeth 6 _24, and the teeth 6 _1, 6 ₂ in the mounted W-phase winding 7b, the winding 7a of the other W-phase, the magnetomotive force The vectors are provided in the same direction inside and outside.

[Effect of Example 5]
According to the stator 1 of the fifth embodiment, there is the specific arrangement 15 in which the winding 7b is positioned on one side in the circumferential direction of the winding 7c without overlapping the winding 7c in the circumferential direction. The two windings 7b and 7c included in the specific arrangement 15 are in phase with each other. Furthermore, the windings 7b included in the first specific arrangement 15A, 7c (winding 7c of the U-phase that is attached to the teeth _{6 16,} and the teeth _{6 17, 6 18} loaded U-phase winding 7b) And the winding 7 (the other U-phase winding 7a) that is in phase with the windings 7b and 7c included in the first specific arrangement 15A and is not included in the first specific arrangement 15A. The magnetic force vectors are provided in the same direction inside and outside.

The windings 7b and 7c included in the second and third specific arrangements 15B and 15C are also provided in the same manner.
Thereby, like Example 1-4, in the manufacturing method of the stator 1 using the expansion | deployment iron core 5, the stator 1 equivalent to all-node concentrated winding can be manufactured without using a winding division body. .

  In the stator 1 of the fifth embodiment, there are three specific arrangements 15, and the three specific arrangements 15 have different phase configurations. For this reason, it is possible to balance the three phases while keeping the induced voltage, torque, etc. generated in each phase uniform.

[Modification]
The aspect of the stator 1 is not limited to an Example, Various modifications can be considered.
For example, the stator 1 of the embodiment constitutes the inner rotor type rotating electrical machine 3 in which the rotor 2 is arranged on the inner diameter side, but the outer rotor type rotation in which the rotor 2 is arranged on the outer diameter side. The electric machine 3 may be configured.
Further, according to the specific arrangement 15 of the fifth embodiment, the winding 7b is arranged on one side in the circumferential direction of the winding 7c, but 7b may be arranged on the other circumferential side of the winding 7c.

  Also, numerical values other than those employed in the embodiment are adopted for the number of poles of the stator 1, the number of slots 11 or teeth 6, the number of normal slots 11a and singular slots 11b, the number of specific arrangements 13 and 15, etc. May be.

  For example, there are three specific arrangements 13 and 15 in the stator 1 of Example 1 and Examples 3 to 5, and there are six specific arrangements 13 in the stator 1 of Example 2. FIG. As shown in FIG. 9, only one specific arrangement 13, 15 may exist. In addition, as shown in FIG. 10, there are six specific arrangements 15 and three combinations of two specific arrangements 15 facing each other at a mechanical angle of 180 degrees are formed. It may be the same.

In this case, the radial force can be balanced in the stator 1 in which the specific arrangement 15 exists.
Further, according to the stator 1 of the embodiment, the number of poles is 8, but the number of poles may be 4 or 12, for example.

Table 1 below shows the total number of windings 7, the number of windings 7 a to 7 c, and the winding coefficient in the stator 1 having the specific arrangement 13 when the number of poles is 4, 8, and 12, respectively. The theoretical calculated value is shown.
[Table 1]

Table 2 shows the total number of windings 7, the number of windings 7 a to 7 c, and the winding coefficient when the number of poles is 4, 8, 12 in the stator 1 having the specific arrangement 15. The theoretical calculated value is shown.
[Table 2]

Furthermore, although the stator 1 of the embodiment has only one of the specific arrangements 13 and 15, both of the specific arrangements 13 and 15 may be provided in one stator 1.
Further, the enlargement of the singular slot 11b is exemplified in the stator 1 having the specific arrangement 13 (see Examples 3 and 4), but the stator 1 having the specific arrangement 15 can also be enlarged even if the singular slot 11b is enlarged. Good.

Here, when the winding coefficients are equal, the stator 1 having the specific arrangement 15 has fewer unique slots 11b than the stator 1 having the specific arrangement 13. For example, in the stator 1 of the first embodiment, the number of singular slots 11b is six, whereas in the stator 1 of the fifth embodiment, the number of singular slots 11b is three. Further, according to the fourth row of Table 1 and the fourth row of Table 2, the stator 1 of Example 1 and the stator 1 of Example 5 have the same winding coefficient.
Therefore, when the winding coefficients are equal, in the stator 1 having the specific arrangement 15, the number of teeth 6 to be deformed can be reduced as the singular slot 11b is expanded, compared to the stator 1 having the specific arrangement 13. it can.

  In the stator 1 having the specific arrangement 13, the number of windings 7 entering the singular slot 11b is smaller than in the stator 1 having the specific arrangement 15 (in the first embodiment, two windings are provided in one singular slot 11b). 7 is included, but in the fifth embodiment, three windings 7 are included in one unique slot 11b.) For this reason, in the stator 1 having the specific arrangement 13, the deformation amount of the teeth 6 due to the expansion of the unique slot 11 b can be suppressed as compared with the stator 1 having the specific arrangement 15. Further, the stator 1 having the specific arrangement 13 is easier to attach the winding 7 to the specific slot 11b than the stator 1 having the specific arrangement 15.

  Furthermore, according to the stator 1 of the third and fourth embodiments, by narrowing or inclining the teeth 6, the unique slot 11b is enlarged to prevent the windings 7 in the specific arrangement 13 from overlapping each other. However, for example, the windings 7 entering the unique slot 11b may be made thinner than the other windings 7 without deforming the teeth 6, thereby preventing the windings 7 from overlapping each other.

DESCRIPTION OF SYMBOLS 1 Stator 3 Rotating electrical machine 4 Stator iron core 6 Teeth 7, 7a, 7b, 7c Winding 13, 15 Specific arrangement

Claims (7)

A winding (7) having three phases is attached to the teeth (6) of the stator core (4) expanded in a straight line, and the stator core (4) is bent and the ends are integrated to form an annular shape. In the stator (1) of the rotating electrical machine (3) provided by
Each winding (7) has one of an electrical angle of 180 ° pitch, an electrical angle of 120 ° pitch, and an electrical angle of 60 ° pitch,
A winding (7b) having an electrical angle of 120 degrees is arranged in the circumferential direction with a winding (7c) having an electrical angle of 60 degrees on one side and the other side of the winding (7c) having an electrical angle of 60 degrees. There is a specific arrangement (13) located without overlapping,
The three windings (7b, 7c) included in this specific arrangement (13) are all out of phase with each other,
The windings (7a, 7b) that are in phase with the winding (7c) having an electrical angle of 60 degrees included in the specific arrangement (13) and are not included in the specific arrangement (13), and the specific arrangement ( The stator (1) of the rotating electrical machine (3) is characterized in that the coil (7c) with an electrical angle of 60 degrees included in 13) is provided so that the magnetomotive force vector is in the opposite direction. ). A winding (7) having three phases is attached to the teeth (6) of the stator core (4) expanded in a straight line, and the stator core (4) is bent and the ends are integrated to form an annular shape. In the stator (1) of the rotating electrical machine (3) provided by
Each winding (7) has one of an electrical angle of 180 ° pitch, an electrical angle of 120 ° pitch, and an electrical angle of 60 ° pitch,
A winding (7b) having an electrical angle of 120 ° is wound around a winding (7c) having an electrical angle of 60 ° on either one side or the other side in the circumferential direction of the winding (7c) having an electrical angle of 60 °. There is a specific arrangement (15) located without overlapping in the direction,
The two windings (7b, 7c) included in this specific arrangement (15) are in phase with each other,
The winding (7a) that is in phase with the two windings (7b, 7c) included in the specific arrangement (15) and is not included in the specific arrangement (15), and included in the specific arrangement (15) The two windings (7b, 7c) are provided so that the magnetomotive force vectors are in the same direction inside and outside the stator (1) of the rotating electrical machine (3). In the stator (1) of the rotating electrical machine (3) according to claim 1 or 2,
The stator (1) of the rotating electrical machine (3), wherein the three specific arrangements (13, 15) exist, and the three specific arrangements (13, 15) have different phase configurations. In the stator (1) of the rotating electrical machine (3) according to claim 3,
There are six specific arrangements (13, 15), and the six specific arrangements (13, 15) form three combinations of the two specific arrangements (13, 15) facing each other at a mechanical angle of 180 degrees. In each combination, the stator (1) of the rotating electrical machine (3) is characterized by having the same phase configuration. In the stator (1) of the rotating electrical machine (3) according to any one of claims 1 to 4,
There is a singular slot (11b) into which a plurality of windings (7) forming the specific arrangement (13, 15) is present, and the cross-sectional area perpendicular to the radial direction of the singular slot (11b) The stator (1) of the rotating electrical machine (3) is larger than the cross-sectional area perpendicular to the radial direction. In the stator (1) of the rotating electrical machine (3) according to claim 5,
The tip of the tooth (6) is provided with a convex portion (6a) extending to one side and the other side in the circumferential direction,
A rotating electrical machine characterized in that the circumferential distance between the convex portions (6a) extending from each of the two teeth (6) forming one slot (11) is equal in all the slots (11). 3) Stator (1). In the stator (1) of the rotating electrical machine (3) according to claims 1 to 6,
There is a singular slot (11b) in which a plurality of windings (7) forming the specific arrangement (13, 15) is inserted, and the winding (7) entering the singular slot (11b) is another winding (7). The stator (1) of the rotating electrical machine (3), characterized in that it is thinner than.

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