JP2018108003A - Rotor and reluctance rotary electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotor and reluctance rotary electric machine allowing for improvement of assembly work of a rotor.SOLUTION: The rotor of an embodiment includes: a shaft; a rotor core; end plates made from non-magnetic material; a conductor bar; and short-circuit rings. The shaft rotates around a rotation axis. The rotor core is fixed to the shaft and includes a plurality of layers of cavity parts formed so as to project radially inward for each pole. The end plates are fixed to the shaft and press the rotor core from both sides in the rotation axis direction to hold the rotor core. A conductor bar is arranged in a cavity part and extends along the rotation axis, the conductor bar having both ends projecting via the end plates. The short-circuit rings are provided in both ends of a plurality of conductor bars and connecting the plurality of conductor bars. Each of the end plates has an insertion hole enabling the conductor bar to insert therein at a position corresponding to each conductor bar, and radially and circumferentially positions the conductor bar with respect the rotor core.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a rotor and a reluctance rotating electrical machine.

  The reluctance rotating electrical machine includes a rotor and a stator. The rotor includes a shaft that is rotatably supported and extends in the axial direction about the rotation axis, and a rotor core that is externally fixed to the shaft. The stator is wound around the stator core having a plurality of teeth that are arranged on the outer periphery of the rotor core with a gap from the rotor core and arranged in the circumferential direction with a space between each other. And a multi-pole multi-phase armature winding.

  The rotor iron core is formed with a plurality of layers of hollow portions that are convex inward in the radial direction per pole. By forming the cavity in this manner, a direction in which the magnetic flux easily flows and a direction in which the magnetic flux does not easily flow are formed in the rotor core. And a reluctance rotary electric machine rotates a shaft using the reluctance torque which a hollow part generate | occur | produces.

By the way, when starting the reluctance rotating electrical machine, it is necessary to detect the relative position between the stator core and the rotor core and to feed power to a predetermined armature winding based on this relative position. For this reason, an inverter is required to start the reluctance rotating electrical machine, which may increase the cost of the reluctance rotating electrical machine.
In view of this, a so-called self-starting reluctance rotating electrical machine that generates induction torque has been proposed so that the reluctance rotating electrical machine can be started without using an inverter.

  In the self-starting reluctance rotating electric machine, a nonmagnetic conductor is inserted into the cavity. The conductor protrudes from both axial ends of the rotor core, and both ends are joined to an annular short-circuit ring. Under such a configuration, when a three-phase alternating current is supplied to the armature winding of the stator, a magnetic flux is formed in a predetermined tooth. At this time, an induced current is generated in the conductor bar of the rotor core in an asynchronous state until the stopped rotor rotates in synchronization with the rotational movement of the magnetic flux on the stator side. That is, the conductor bar functions as a secondary coil and generates a starting torque for rotating the rotor with the stator.

  Here, positioning of the conductor with respect to the hollow portion is performed by a short-circuit ring provided at both ends of the conductor. In many cases, the conductor and the short-circuit ring are welded to ensure sufficient strength. As described above, since the joining of the short-circuit ring and the conductor involves welding and the like while positioning the conductor with respect to the cavity, the assembly work of the rotor may become troublesome.

JP-A-8-182275 JP 2003-274621 A

  The problem to be solved by the present invention is to provide a rotor and a reluctance rotating electrical machine that can improve the assembly work of the rotor.

  The rotor according to the embodiment includes a shaft, a rotor core, an end plate made of a non-magnetic material, a conductor bar, and a short-circuit ring. The shaft rotates around the rotation axis. The rotor core is fixed to a shaft, and a plurality of layers of cavities that are convex inward in the radial direction per pole are formed. The end plate is fixed to the shaft and holds the rotor core from both sides in the direction of the rotation axis. The conductor bar is disposed in the hollow portion, extends along the rotation axis, and both ends protrude through the end plates. The short-circuit ring is provided at both ends of the plurality of conductor bars and connects the plurality of conductor bars. The end plate has an insertion hole through which the conductor bar can be inserted at a position corresponding to each conductor bar, and performs positioning of the conductor bar in the radial direction and the circumferential direction with respect to the rotor core.

The partial cross section perspective view which shows the reluctance rotary electric machine of embodiment. Sectional drawing orthogonal to the axial direction which shows the rotor core of embodiment. The perspective view which shows the state which removed the end plate and short circuit ring of the rotor of embodiment. The perspective view which shows the state which attached the end plate to the rotor core of embodiment.

  Hereinafter, a rotor and a reluctance rotating electrical machine according to an embodiment will be described with reference to the drawings.

FIG. 1 is a partial cross-sectional perspective view showing a reluctance rotating electrical machine (hereinafter simply referred to as a rotating electrical machine) 1.
As shown in the figure, the rotating electrical machine 1 includes a housing 2, a stator 3 fixed in the housing 2, a rotor 4 supported in the housing 2 so as to be rotatable around a rotation axis O, It has. In the following description, a direction parallel to the rotation axis O is simply referred to as an axial direction, a direction around the rotation axis O is simply referred to as a circumferential direction, and a radial direction orthogonal to the rotation axis O is simply referred to as a radial direction. .

  The housing 2 includes a substantially cylindrical frame 5 and bearing brackets 6 and 7 that close the openings 5 a and 5 b at both ends in the axial direction of the frame 5. Each of the bearing brackets 6 and 7 is formed in a substantially disc shape. Bearings 8 and 9 for rotatably supporting the rotor 4 are provided at substantially radial centers of the bearing brackets 6 and 7, respectively.

The stator 3 has a substantially cylindrical stator core 10 whose central axis is located coaxially with the rotation axis O. The outer peripheral surface of the stator core 10 is fixed to the inner peripheral surface of the frame 5 by, for example, press-fitting. The stator core 10 can be formed by laminating a plurality of electromagnetic steel plates or press-molding soft magnetic powder.
A plurality of teeth 11 that protrude toward the rotation axis O and are arranged at equal intervals in the circumferential direction are integrally formed on the inner peripheral surface of the stator core 10. Although the specific shape of the teeth 11 is not particularly shown, the teeth 11 are formed in a substantially rectangular cross section. A slot (not shown) is formed between adjacent teeth 11. An armature winding 13 is wound around each tooth 11 through these slots.

  The rotor 4 is disposed radially inward of the stator core 10. The rotor 4 includes a shaft 14 that rotates about a rotation axis O, a substantially cylindrical rotor core 15 that is externally fitted and fixed to the shaft 14, a plurality of conductor bars 41 that are provided in the rotor core 15, and End plates (iron core retainers) 42 and short-circuit rings 45 disposed on both axial sides of the rotor core 15 are provided.

FIG. 2 is a cross-sectional view orthogonal to the axial direction showing the rotor core 15.
As shown in FIGS. 1 and 2, the rotor core 15 can be formed by laminating a plurality of electromagnetic steel plates or press-molding soft magnetic powder. The outer diameter of the rotor core 15 is set such that a predetermined air gap G is formed between each of the teeth 11 facing in the radial direction. Further, a through hole 16 penetrating in the axial direction is formed at the radial center of the rotor core 15. The shaft 14 is press-fitted or shrink-fitted into the through hole 16, and the shaft 14 and the rotor core 15 are rotated together.

  Furthermore, the rotor core 15 has four layers of cavity portions (flux barriers) 21, 22, 23, 24 (first cavity portion 21, second cavity portion 22, A third cavity portion 23 and a fourth cavity portion 24) are formed side by side in the radial direction. That is, the first cavity portion 21 is formed at a position closest to the shaft 14 (innermost radial direction of the rotor core 15), and further in order toward the direction away from the shaft 14 (radially outer side). The third cavity portion 23 and the fourth cavity portion 24 are formed side by side. The fourth cavity portion 24 is disposed at a position farthest from the shaft 14 (radially outermost side).

  Further, the hollow portions 21 to 24 are formed so as to follow the flow of magnetic flux formed when the armature winding 13 is energized. That is, each of the cavities 21 to 24 is curved so that the center in the circumferential direction is located on the innermost radial direction (so as to be convex toward the inner side in the radial direction). As a result, a direction in which the magnetic flux easily flows and a direction in which the magnetic flux does not easily flow are formed in the rotor core 15. In the following description, the longitudinal direction of each of the cavities 21, 22, 23, 24 when viewed from the axial direction may be simply referred to as the longitudinal direction of the cavities 21, 22, 23, 24.

Here, in this embodiment, the direction in which the magnetic flux easily flows is referred to as the q axis. A direction along a radial direction that is electrically and magnetically orthogonal to the q-axis is referred to as a d-axis. That is, each of the hollow portions 21 to 24 has a multilayer structure in the radial direction along the d axis.
More specifically, in the rotor core 15, the q-axis direction is referred to as a q-axis direction in which the flow of magnetic flux is not hindered by the hollow portions 21 to 24. That is, a positive magnetic position (for example, the N pole of the magnet is brought closer) to an arbitrary circumferential angle position on the outer peripheral surface 15a of the rotor core 15, and one pole (for this embodiment, a mechanical angle of 90 degrees). ) Rotation axis when the largest amount of magnetic flux flows when a negative magnetic position (for example, the S pole of the magnet is moved closer) is given to any other angular position that has shifted and the arbitrary position is shifted in the circumferential direction. A direction from O to an arbitrary position is defined as q-axis. And the longitudinal direction of each cavity 21-24 is a q-axis.

  On the other hand, a direction in which the flow of magnetic flux is blocked by the hollow portions 21 to 24, that is, a direction magnetically orthogonal to the q axis is referred to as a d axis. In the present embodiment, the d-axis is a direction parallel to the direction in which the two rotor core parts separated by the hollow portions 21 to 24 into a region close to the rotation axis O and a region far from the rotation axis O face each other. Further, when the hollow portions 21 to 24 are formed in multiple layers as in the present embodiment (four layers in the present embodiment), the overlapping direction of the layers is the d axis. In the present embodiment, the d-axis is not limited to being electrically and magnetically orthogonal to the q-axis, and may intersect with a certain angle width (for example, about 10 degrees in mechanical angle) from the orthogonal angle.

  As described above, the rotor core 15 is configured with four poles, and four layers of the hollow portions 21 to 24 are formed per one pole (a circumferential angle region of ¼ circumference of the rotor core 15). It will be. And 1 pole means the area | region between q axes. That is, each of the cavities 21 to 24 is formed so as to curve inward in the radial direction so that the d-axis is located on the innermost side in the radial direction.

Each cavity 21 to 24 is curved so that both ends in the longitudinal direction are located on the outer periphery of the rotor core 15 when viewed from the axial direction. And each cavity part 21-24 is formed so that the location near a longitudinal direction may be along the q-axis, and the location near the center of a longitudinal direction may be orthogonal to d-axis.
Further, in the q-axis direction, bridges 26, 27, 28, 29 (first bridge 26, second bridge) are provided between the longitudinal ends of the hollow portions 21 to 24 and the outer peripheral surface 15 a of the rotor core 15, respectively. 27, a third bridge 28, and a fourth bridge 29) are formed.

  Furthermore, center bridges 61, 62, and 63 (first center bridge 61, 61) are respectively formed in the longitudinal direction centers of the first cavity portion 21, the second cavity portion 22, and the third cavity portion 23 among the cavity portions 21 to 24. A second center bridge 62 and a third center bridge 63) are formed. Each center bridge 61, 62, 63 is provided so as to straddle each cavity 21, 21, 23 along the d-axis direction. These center bridges 61, 62, and 63 are for making it difficult to deform the rotor core 15 in which the hollow portions 21 to 24 are formed.

FIG. 3 is a perspective view showing a state in which the end plate 42 and the short-circuit ring 45 of the rotor 4 are removed.
As shown in FIGS. 2 and 3, the plurality of conductor bars 41 provided in the rotor core 15 are inserted into the hollow portions 21 to 24. Specifically, the conductor bars 41 are inserted at both longitudinal ends of the first cavity portion 21, the second cavity portion 22, and the third cavity portion 23, respectively. A conductor bar 41 is inserted in the center of the fourth cavity 24 in the longitudinal direction.

  Each conductor bar 41 is a plate-like member that is substantially rectangular in cross-section perpendicular to the axial direction and is elongated and uniform in the axial direction. The conductor bar 41 protrudes from both axial ends of the rotor core 15. The conductor bar 41 is formed of a nonmagnetic and conductive material such as an aluminum alloy or a copper alloy. Furthermore, the conductor bar 41 inserted into the first cavity portion 21, the second cavity portion 22, and the third cavity portion 23 has a predetermined width from the corresponding first bridge 26, second bridge 27, and third bridge 28. It is arranged with a gap.

FIG. 4 is a perspective view showing a state in which the end plate 42 is attached to the rotor core 15.
As shown in the figure, the end plates 42 are arranged at both ends in the axial direction of the rotor core 15 so as to overlap the rotor core 15. The end plate 42 is formed in a substantially disc shape by a nonmagnetic material (for example, hard resin), and its outer diameter is set to be substantially the same as the outer diameter of the rotor core 15. The end plates 42 hold the rotor core 15 from both sides in the axial direction, restrict the movement of the rotor core 15 in the axial direction with respect to the shaft 14, and the rotor core 15 configured by laminating a plurality of electromagnetic steel plates. Or unite them. Further, the end plates 42 close the openings at both ends in the axial direction of the hollow portions 21 to 24 formed in the rotor core 15.

A through-hole 42a capable of press-fitting or shrink-fitting the shaft 14 is formed at the center in the radial direction of the end plate 42. Thereby, the end plate 42 is fixed to the shaft 14, and the movement of the rotor core 15 with respect to the shaft 14 in the axial direction is restricted.
The shaft 14 is inserted into the through hole 42a of the end plate 42, a key is provided on one of the inner peripheral surface of the through hole 42a and the outer peripheral surface of the shaft 14, and a key groove capable of receiving the key is provided on the other side. Thus, the end plate 42 may be fixed to the shaft 14.

The end plates 42 are respectively formed with conductor insertion holes 42b at positions corresponding to the conductor bars 41 inserted into the rotor core 15. The conductor bar 41 is inserted through the conductor insertion holes 42b. The conductor bar 41 protrudes from the outer surface 42c of the end plate 42 opposite to the rotor core 15 through the conductor insertion hole 42b.
Here, the conductor bar 41 may be press-fitted into the conductor insertion hole 42 b of the end plate 42. In the case of press-fitting, both end sides in the axial direction of the conductor bar 41 are preferably formed to be slightly tapered toward the end. With this configuration, even when the conductor bar 41 is press-fitted into the conductor insertion hole 42b, the conductor bar 41 can be smoothly inserted into the conductor insertion hole 42b.

As shown in FIG. 1, both end portions in the axial direction of the conductor bar 41 protruding through the conductor insertion hole 42 b of the end plate 42 are short-circuited by short-circuit rings 45, respectively.
The short-circuit ring 45 is an annular member that is disposed apart from the end plate 42 in the axial direction by a predetermined interval K1. The center in the radial direction of the short-circuit ring 45 also coincides with the rotation axis O. Similar to the conductor bar 41, the short-circuit ring 45 is made of a non-magnetic and conductive material. Specifically, the material of the short-circuit ring 45 is preferably the same material as that of the conductor bar 41 and formed of, for example, an aluminum alloy or a copper alloy. However, the present invention is not limited to this.

  Conductor insertion holes 45 a are respectively formed in the short-circuit rings 45 at positions corresponding to the conductor bars 41. The conductor bar 41 is inserted through the conductor insertion holes 45a. The short-circuit ring 45 through which the conductor bar 41 is inserted is joined to the conductor bar 41 by brazing, for example.

Here, for example, when the short-circuit ring 45 and the conductor bar 41 are joined by brazing, the predetermined interval K1 between the end plate 42 and the short-circuit ring 45 is the end of the conductor bar 41 and the conductor insertion hole 45a of the short-circuit ring 45. It is set to an interval at which the wax sufficiently wraps around the part.
The joining of the short-circuit ring 45 and the conductor bar 41 is not limited to brazing, and it is sufficient that the short-circuit ring 45 and the conductor bar 41 can be joined. For example, the conductor bar 41 can be press-fitted into the conductor insertion hole 45a, or welding other than brazing can be employed.

Next, a method for assembling the rotor 4 will be described.
First, the rotor core 15 and the end plate 42 are assembled to the shaft 14 by press fitting, shrink fitting, or the like, and the conductor bars 41 are respectively inserted into the hollow portions 21 to 24 of the rotor core 15 and the conductor insertion holes 42b of the end plate 42. insert. At this time, the inner surface of the end plate 42 is brought into contact with both axial ends of the rotor core 15. The circumferential positioning of the rotor core 15 and the end plate 42 is performed using a jig (not shown).

  Here, conductor insertion holes 42 b are formed in the end plates 42 at positions corresponding to the conductor bars 41 inserted into the rotor core 15. The conductor bar 41 is inserted through the conductor insertion holes 42b. That is, the movement of the conductor bar 41 in the radial direction and the circumferential direction is restricted by being inserted into the conductor insertion hole 42b. For this reason, by fixing the end plate 42 to the shaft 14, the radial and circumferential positioning of the conductor bar 41 with respect to the rotor core 15 is accurately performed. Further, when the conductor bar 41 is press-fitted into the conductor insertion hole 42 b of the end plate 42, the conductor bar 41 is positioned in the axial direction with respect to the end plate 42.

  Next, the conductor insertion holes 45 a of the short-circuit ring 45 are inserted into both ends of each conductor bar 41 in the axial direction. Then, both axial ends of each conductor bar 41 and the short-circuit ring 45 are joined by brazing or the like. At this time, at least the radial and circumferential positioning of the conductor bar 41 with respect to the rotor core 15 is performed by the end plate 42. The positioning of the conductor bar 41 need not be considered. For this reason, the joining operation | work of the short circuit ring 45 and the conductor bar 41 can be performed easily. And the assembly work of the rotor 4 is completed by joining the short ring 45 and the conductor bar 41.

Next, the operation of the rotating electrical machine 1 will be described.
When driving the rotating electrical machine 1, three-phase alternating current is supplied to the armature winding 13 of the stator 3. Then, a magnetic flux is formed in the predetermined tooth 11. Then, the teeth 11 where the magnetic flux is formed are sequentially switched along the rotation direction (circumferential direction) of the rotor 4 (the formed magnetic flux rotates).
At this time, an induced current is generated in the conductor bar 41 provided in the rotor core 15 in the asynchronous state until the stopped rotor 4 rotates in synchronization with the rotational movement of the magnetic flux on the stator 3 side. That is, each conductor bar 41 functions as a secondary coil, and generates a starting torque for rotating the rotor 4 with the stator 3.

  Here, the conductor bars 41 disposed at the longitudinal ends of the first cavity portion 21, the second cavity portion 22, and the third cavity portion 23 are respectively connected to the corresponding first bridge 26, second bridge 27, and second The three bridges 28 are arranged with a predetermined gap. Since the conductor bar 41 is accurately positioned by the end plate 42, the predetermined gaps between the first bar 26, the second bridge 27, and the third bridge 28 and the conductor bar 41 are also determined with high accuracy.

  The gap is difficult to pass magnetic flux. For this reason, by forming a predetermined gap, the magnetic flux formed by the stator 3 may be linked to the conductor bar 41, and harmonic current that does not contribute to the rotation of the rotor 4 may flow to the conductor bar 41. It is suppressed. In other words, the harmonic magnetic flux caused by the torque ripple generated in the air gap G between the stator 3 and the rotor 4 is unlikely to interlink with each conductor bar 41, and the harmonic secondary copper loss is unlikely to occur.

  Thus, in the above-described embodiment, the conductor insertion hole 42b is formed in the end plate 42, and the conductor bar 41 is inserted into the conductor insertion hole 42b, whereby the conductor bar with respect to the rotor core 15 is interposed via the end plate 42. 41 is positioned in the radial and circumferential directions. That is, the positioning of the conductor bar 41 with respect to the rotor core 15 is performed by the end plate 42. On the other hand, joining of the conductor bars 41 and the short-circuit ring 45 for short-circuiting the conductor bars 41 is performed as a single unit. In this way, the positioning work of the conductor bar 41 with respect to the rotor core 15 and the joining work of the short-circuit ring 45 and the conductor bar 41 can be separated, and there is no need to perform them simultaneously. For this reason, the assembly work of the rotor 4 can be improved.

  Further, the conductor bar 41 can be positioned in the axial direction with respect to the end plate 42 by fixing the conductor bar 41 to the conductor insertion hole 42b of the end plate 42 by press fitting or the like. In other words, the end plate 42 can also position the conductor bar 41 with respect to the rotor core 15. For this reason, the joining operation of each conductor bar 41 and the short-circuit ring 45 can be further facilitated.

  In the above-described embodiment, a case has been described in which the short-circuit ring 45 is arranged apart from the end plate 42 in the axial direction by a predetermined interval K1. However, the present invention is not limited to this, and the short-circuit ring 45 and the end plate 42 may be brought into contact with each other without providing the predetermined interval K1 between the short-circuit ring 45 and the end plate 42. With this configuration, when the conductor bar 41 is joined to the short-circuit ring 45, the movement of the short-circuit ring 45 in the axial direction is restricted. For this reason, the conductor bar 41 can be easily positioned in the axial direction with respect to the rotor core 15.

Further, in the above-described embodiment, the case where the conductor bars 41 are provided in the respective hollow portions 21 to 24 and the starting torque for rotating the rotor 4 is generated has been described. However, it is not restricted to this, You may provide the conductor bar 41 only in arbitrary cavities 21-24 among each cavities 21-24. Even in such a case, when the rotating electrical machine 1 is driven, the starting torque can be generated in the rotor 4.
Furthermore, in the above-described embodiment, a case has been described in which the rotor core 15 has four layers of the cavity portions 21 to 24 (per pole) in each of the ¼ circumferential angle regions. . However, the present invention is not limited to this, and a plurality of layers of four or more cavities may be formed.

Moreover, in the above-mentioned embodiment, each cavity part 21-24 is curvedly formed so that the center of the circumferential direction may be located in the radial direction innermost (it becomes convex shape toward radial inner side). Explained the case. However, it is not restricted to this, Each cavity 21-24 should just be formed in convex shape toward radial inside. In other words, the cavities 21 to 24 may not be curved.
Moreover, in the above-mentioned embodiment, the case where the rotor core 15 was comprised by 4 poles was demonstrated. However, the present invention is not limited to this, and the rotor core 15 may be configured with four or more poles.

  According to at least one embodiment described above, the conductor insertion hole 42b is formed in the end plate 42, and the conductor bar 41 is inserted into the conductor insertion hole 42b, so that the rotor core 15 is connected to the rotor core 15 via the end plate 42. Positioning of the conductor bar 41 in the radial direction and the circumferential direction is performed. That is, the positioning of the conductor bar 41 with respect to the rotor core 15 is performed by the end plate 42. On the other hand, joining of the conductor bars 41 and the short-circuit ring 45 for short-circuiting the conductor bars 41 is performed as a single unit. In this way, the positioning work of the conductor bar 41 with respect to the rotor core 15 and the joining work of the short-circuit ring 45 and the conductor bar 41 can be separated, and there is no need to perform them simultaneously. For this reason, the assembly work of the rotor 4 can be improved.

  Further, the conductor bar 41 can be positioned in the axial direction with respect to the end plate 42 by fixing the conductor bar 41 to the conductor insertion hole 42b of the end plate 42 by press fitting or the like. In other words, the end plate 42 can also position the conductor bar 41 with respect to the rotor core 15. For this reason, the joining operation of each conductor bar 41 and the short-circuit ring 45 can be further facilitated.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Reluctance rotary electric machine, 14 ... Shaft, 15 ... Rotor core, 21 ... 1st cavity part (cavity part), 22 ... 2nd cavity part (cavity part), 23 ... 3rd cavity part (cavity part), 24 ... 4th cavity part (cavity part), 41 ... Conductor bar, 42 ... End plate, 42b ... Conductor insertion hole (insertion hole), 45 ... Short circuit ring, O ... Rotation axis

Claims (4)

A shaft that rotates about the axis of rotation;
A rotor core fixed to the shaft and formed with a plurality of layers of hollow portions projecting radially inward per pole;
An end plate made of a non-magnetic material fixed to the shaft and holding the rotor core from both sides of the rotation axis direction;
A plurality of conductor bars disposed in the hollow portion and extending along the rotation axis and projecting at both ends through the end plate;
A short-circuit ring provided at both ends of the plurality of conductor bars and connecting the plurality of conductor bars;
The end plate has a through hole through which the conductor bar can be inserted at a position corresponding to each conductor bar, and performs positioning of the conductor bar in the radial direction and the circumferential direction with respect to the rotor core. The rotor according to claim 1, wherein the conductor bar is fixed to the end plate. The rotor according to claim 1 or 2, wherein the conductor bar is press-fitted into the insertion hole of the end plate. The rotor according to any one of claims 1 to 3,
A stator provided around the rotor, around which an armature winding is wound,
Reluctance rotating electric machine with

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