JP2010207021A - End plate for rotor and rotary electric machine using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide end plates for a rotor that improves the efficiency of a rotary electric machine by suppressing an eddy current loss generated in the end plates more effectively. <P>SOLUTION: The rotor of the rotary electric machine includes a multilayer iron core 16 formed by stacking a plurality of magnetic steel plates in the axis direction of a rotor shaft, and a plurality of magnets 17a and 17b arranged at predetermined intervals in the peripheral direction of the multilayer iron core 16. The end plates 18 for the rotor are fixed to the rotor shaft while holding the multilayer iron core including the magnets 17a and 17b from both sides. In the peripheral edge of the end plates 18, a plurality of cutouts 34 are arranged. Each cutout 34 is formed on the basis of the center of an electric angle between the d-axis and q-axis of the rotor around the center of shaft 28 as a reference. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotor end plate and a rotating electric machine using the same, and more particularly to a rotor end plate capable of suppressing loss due to eddy current generated in the end plate and improving efficiency, and a rotation using the same. It relates to electric machinery.

  Conventionally, a rotating electrical machine 100 having a cross-sectional structure as shown in FIG. 11 is generally used. The rotating electrical machine 100 includes a rotor 11 that is a field magnetic flux generation source, and a stator 12 that generates a rotating magnetic field that rotates the rotor 11.

  The rotor 11 includes a rotor shaft 14, a laminated core 16 formed by laminating a plurality of magnetic steel plates 15 made of an annular flat plate in the axial direction of the rotor shaft 14, and both sides of the rotor shaft 14 in the axial direction. It is comprised from the two end plates 18 which are fixed with respect to the rotor shaft 14 in the state which pinched | interposed the laminated core 16, and restrict | limit the movement of the laminated core 16 in the axial direction.

  The laminated iron core 16 having a cylindrical outer shape is provided with a plurality of magnet mounting holes 17 penetrating in the axial direction inside the vicinity of the outer periphery at predetermined intervals in the circumferential direction. A magnet 19 is inserted in each. Therefore, the two end plates 18 play a role of restricting movement in the axial direction even with respect to the magnet 19 inserted into the magnet mounting hole 17 of the laminated iron core 16.

  On the other hand, the stator 12 has a stator core 20 formed by laminating a plurality of magnetic steel plates, and a stator coil having a plurality of phases with respect to the teeth portion 21 provided on the inner peripheral portion of the stator core 20. A plurality of sets 22 are wound. The rotor 11 can be rotated by generating a rotating magnetic field using the multi-phase stator coil 22.

  In the conventional rotating electrical machine 100, a metal plate is generally used for the end plate 18 used for the rotor 11. A magnetic flux flows into the end plate 18 from the end of the magnet 19 in the axial direction as indicated by an arrow M in FIG. 11, and since the magnetic flux fluctuates, an eddy current is generated inside the end plate 18. However, this causes a problem that eddy current loss occurs. The presence of this eddy current loss causes a reduction in the efficiency of the rotating electrical machine, and there has been a demand for its improvement.

  For example, in Patent Document 1 below, attention is paid to the fact that eddy current loss is likely to occur because the fluctuation in magnetic flux is larger at the outer peripheral portion than at the inner peripheral portion in the end plate. In order to suppress the occurrence, the end plate is provided with a notch on the outer peripheral side of the end plate, and the end plate is formed such that portions other than the notch are arranged on the plurality of magnets arranged in the laminated iron core and between each magnet. Is disclosed.

JP 2005-304177 A

  However, by forming the notch at an appropriate position on the outer peripheral edge of the end plate, eddy current loss generated in the end plate can be more effectively suppressed, thereby further increasing the efficiency of the rotating electrical machine. This is what is desired.

  An object of the present invention is to provide an end plate for a rotor that can more effectively suppress eddy current loss generated in the end plate and improve the efficiency of the rotating electrical machine, and a rotating electrical machine using the same. .

  An end plate according to the present invention includes a laminated iron core formed by laminating a plurality of magnetic steel plates in the axial direction of a rotor shaft, and a plurality of magnets arranged at predetermined intervals in the circumferential direction of the laminated iron core. In the rotor of an electric machine, the rotor end plate is fixed to the rotor shaft in a state where the laminated iron core including the magnet is sandwiched from both sides in the axial direction, and a plurality of notches are formed on an outer peripheral edge portion. The notch is formed with reference to the center position between the d-axis and the q-axis of the rotor with respect to the electrical axis as the center of the axis of the rotor shaft. .

  In the rotor end plate according to the present invention, the cutout portion may be formed in a shape having a maximum cutting depth at the center position. In this case, the notch may be formed in a symmetrical shape in the circumferential direction with respect to the center position.

  In the rotor end plate according to the present invention, the laminated iron core has a cylindrical outer shape, the end plate is an annular flat plate having the same diameter as the laminated iron core, and the magnet is the laminated iron core. Is inserted and disposed in a magnet mounting hole that is formed in an axially penetrating manner inside the outer periphery, and the notch is formed in a shape and a depth not to expose the opening of the magnet mounting hole. Also good.

  In the rotor end plate according to the present invention, the laminated iron core has a cylindrical outer shape, the end plate is an annular flat plate having the same diameter as the laminated iron core, and the magnet is the laminated iron core. A magnet fixing agent that is inserted and disposed in a magnet mounting hole that is formed in an axially penetrating manner in the vicinity of the outer periphery of the laminated core, and that communicates with the end of the magnet mounting hole along the axial direction in the laminated core. A filling hole is formed, and the notch may be formed in a shape and a notch depth so as not to expose an opening of the magnet fixing agent filling hole.

  Further, in the rotor end plate according to the present invention, when the rotating electrical machine in which the rotor including the end plate is incorporated is used only as a rotating electrical machine, the notch portion is related to the rotation direction of the rotor. On the other hand, when the rotating electrical machine in which the rotor including the end plate is incorporated is used only as a generator, the notch portion is a rotational direction of the rotor. May be formed on the downstream side of the d-axis.

  A rotating electrical machine according to the present invention is a stator in which a rotor that is a field flux generation source and a plurality of stator coils that generate a rotating magnetic field that rotates the rotor are wound around a plurality of sets of stator cores. The rotor includes a rotor shaft, a laminated iron core formed by laminating a plurality of magnetic steel plates in the axial direction of the rotor shaft, and a predetermined direction in the circumferential direction of the laminated iron core. A plurality of magnets arranged at intervals, and an end plate fixed to the rotor shaft in a state where the laminated iron core including the magnets is sandwiched from both sides in the axial direction, and the end plate is included in the present invention. The rotor end plate according to any one of the above configurations is provided.

  According to the rotor end plate and the rotating electrical machine using the same according to the present invention, the position of the notch formed in the outer peripheral edge of the end plate is set to a more appropriate position, so that the vortex in the end plate can be reduced. Generation of current loss can be more effectively suppressed, and the efficiency of the rotating electrical machine can be increased.

FIG. 1 is a sectional view of a rotor having an end plate according to an embodiment of the present invention. FIG. 2 is a partial plan view of an end plate and a laminated iron core in which notches are not formed. FIG. 3 is an overall plan view of the end plate and the laminated iron core of the present embodiment as viewed from the direction of arrow E in FIG. FIG. 4 is a partial plan view showing a comparative example 1 of an end plate in which notches are not formed. FIG. 5 is a partial plan view showing a comparative example 2 of an end plate that has no notch and has a smaller diameter than the laminated core. FIG. 6 is a partial plan view showing a comparative example 3 of an end plate in which a notch is formed around the d-axis position. FIG. 7 is a partial plan view showing a comparative example 4 of the end plate in which a notch is formed around the q-axis position. FIG. 8 is a partial plan view showing a comparative example 5 of an end plate in which notches are formed around the respective positions of the d-axis and the q-axis. FIG. 9 is a partial plan view showing the end plate of the present embodiment in which a notch is formed with reference to the center position between the d-axis and the q-axis. FIG. 10 is a graph showing the relationship between the diameter and the loss ratio indicating the degree of eddy current loss for the end plates of Comparative Examples 1 to 5 shown in FIGS. It is a fragmentary sectional view which shows an example of the conventional rotary electric machine.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the present invention, and all the features described in the embodiments are not necessarily essential to the solution means of the invention. Further, members and elements that are the same as or similar to those described in the background art are assigned the same reference numerals, and redundant description is omitted as much as possible.

  FIG. 1 is a longitudinal sectional view illustrating a rotor 11 to which a rotor end plate (hereinafter, simply referred to as “end plate”) 18 according to an embodiment of the present invention is applied. The rotor 11 includes a rotor shaft 14, a hub member 24 having a substantially H-shaped cross section fixed to the rotor shaft 14, and a laminated iron core 16 and an end plate 18 fixed to the outer periphery of the hub member 24. The rotor 11 and the stator 12 as described above constitute a rotating electrical machine 10 that is an embodiment of the present invention.

  In the end plate 18, the region where the fluctuation of the magnetic flux is larger and the eddy current loss is most likely to occur in the outer peripheral portion where the points A and B in FIG. 2 are located than in the inner peripheral portion where the point C in FIG. 2 is located. That is described in JP-A-2005-304177 described above.

  FIG. 3 is a plan view showing the end plate 18 and the laminated iron core 16 when the rotor 11 in FIG. 1 is viewed from the direction of arrow E. A laminated iron core 16 formed by laminating a plurality of magnetic steel plates in the axial direction and integrally connected by a method such as caulking at an appropriate plurality of places is a cylindrical body whose outer shape forms a columnar shape. The end plate 18 is formed of an annular metal plate, and the diameter D of the outer peripheral circle is set equal to the laminated iron core 16.

  In FIG. 3, magnets 17 a and 17 b arranged in the laminated iron core 16 located on the back side of the end plate 18 are indicated by dotted lines. In the rotor 11, one magnetic pole 26 is constituted by two magnets 17a and 17b. Eight magnetic poles 26 are provided at equal intervals in the circumferential direction of the laminated core 16. Since one magnetic pole pair is formed by the two magnetic poles 26 opposed in the radial direction, the rotor 11 has four magnetic pole pairs.

  Two magnets 17 a and 17 b forming each magnetic pole pair 26 are formed in two adjacent magnet mounting holes 19 a and 19 b that are formed in the vicinity of the outer periphery of the laminated core 16 along the axial direction of the rotor shaft 14. Are inserted and arranged respectively. Each of the magnets 17a and 17b is provided in a substantially “C” shape by having its end portions adjacent to each other slightly moved toward the axis 28 side of the rotor shaft 14.

  The laminated iron core 16 is formed with magnet fixing agent filling holes 30 and 32 penetrating in the axial direction at both ends of the magnet mounting holes 19a and 19b. The magnets 17a and 17b arranged in the magnet mounting holes 19a and 19b are firmly fixed by filling the magnet fixing holes 30 and 32 with a magnet fixing agent such as mold resin or adhesive. become.

  On the other hand, a plurality of notches 34 are formed in the outer peripheral edge portion of the end plate 18 that forms a circle. The notch 34 is formed with reference to the center position between the d-axis and the q-axis of the rotor 11 around the axis 28 of the rotor shaft 14 with respect to the electrical angle.

  More specifically, the notch 34 has a d-axis extending radially outward from the axis 28 of the rotor shaft 14 that serves as the rotation center of the rotor 11 through the center of each magnetic pole 26, and the axis 28. A straight line 36 that bisects the angle θ formed by the q axis extending radially outward through the center position between two adjacent magnetic poles 26, 26 intersects the outer circle of the laminated core 16. The position is formed with the center position 38 (see FIG. 9). Further, the notch 34 is formed as a substantially arc-shaped notch having a maximum depth of cut K at the center position 38 and a symmetrical shape in the circumferential direction with respect to the center position 38 ( (See FIG. 9).

  By providing the cutout portion 34 at such a position, eddy current loss generated in the end plate 18 can be effectively suppressed, and further increase in efficiency of the rotating electrical machine 10 can be achieved. The experiment and the result performed when determining the formation position of this notch part 34 are later mentioned with reference to FIGS.

  Here, the shape of the notch 34 and the cutting depth K can be appropriately set according to the design of the rotor 11 and the like. For example, in the present embodiment, the cutout portion 34 is cut into a substantially arc shape. However, the present invention is not limited to this, and the cutout portion 34 may be cut into a substantially triangular shape or a substantially trapezoidal shape, for example.

  However, the notch 34 is preferably formed in a shape and a cutting depth K that does not expose the openings of the magnet mounting holes 19a and 19b that open in the axial end surface of the laminated iron core 16. As described above, the end plate 18 serves to regulate the axial movement of the magnets 17a and 17b disposed in the magnet mounting holes 19a and 19b, so that the openings of the magnet mounting holes 19a and 19b end. This is because it is necessary to be blocked by the plate 18. In addition, as long as the movement of the magnets 17a and 17b in the axial direction can be restricted, it is permitted that the openings of the magnet mounting holes 19a and 19b are partially exposed by the notch 34.

  Further, when the magnet fixing agent filling holes 30 and 32 are formed so as to communicate with the magnet mounting holes 19 a and 19 b as in the rotor 11 in the present embodiment, the notch 34 is formed in the axial direction of the laminated core 16. It is preferable that the magnet fixing agent filling holes 30 and 32 opened at the end face have a shape and a cutting depth K so as not to expose the openings. This is because the openings of the magnet fixing agent filling holes 30, 32 are formed on the end plate in order to prevent the magnet fixing agent debris caused by deterioration over time from jumping out of the magnet fixing agent filling holes 30, 32. This is because it needs to be blocked by 18.

  Furthermore, it is preferable that the end plate 18 has the same outer diameter as the laminated iron core 16 and the notch area of the notch 34 is not so large. It is advantageous to increase the notch area in order to obtain a large effect of suppressing eddy current loss in the outer peripheral portion of the end plate 18. Since the outer peripheral portion of the magnetic steel plate is a portion that functions to hold down the axial direction by the repulsive magnetic force acting on each other, the outer diameter of the end plate 18 is smaller than that of the laminated core 16. This is because the strength of the outer peripheral edge portion of the end plate 18 becomes weaker as the cutout area becomes larger, and the pressing function is lowered accordingly. Therefore, it is desirable that the outer diameter of the end plate 18 and the shape and the cutting depth related to the cutout area of the cutout portion 34 are determined in consideration of the function of pressing the outer peripheral portion of each magnetic steel plate from both sides.

  Next, with reference to FIGS. 4-10, the experiment and the result which were performed when determining the formation position of the notch part 34 in the end plate 18 are demonstrated. FIG. 4 is a partial plan view showing the comparative example 1 of the end plate 18a in which notches are not formed. FIG. 5 is a partial plan view showing a comparative example 2 of an end plate that has no notch and has a smaller diameter than the laminated core. FIG. 6 is a partial plan view showing a comparative example 3 of an end plate in which a notch is formed around the d-axis position. FIG. 7 is a partial plan view showing a comparative example 4 of the end plate in which a notch is formed around the q-axis position. FIG. 8 is a partial plan view showing a comparative example 5 of an end plate in which notches are formed around the respective positions of the d-axis and the q-axis. FIG. 9 is a partial plan view showing the end plate 18 of the present embodiment in which a notch is formed with reference to the center position between the d-axis and the q-axis. FIG. 10 shows the diameter and the loss ratio indicating the degree of eddy current loss for the end plates 18a to 18e of Comparative Examples 1 to 5 shown in FIGS. 4 to 8 and the end plate 18 of the present embodiment shown in FIG. It is a graph which shows a relationship.

  As shown in FIG. 4, the end plate 18 a of Comparative Example 1 has the same diameter as the laminated iron core 16, and no notch is formed on the outer peripheral portion thereof. The eddy current loss obtained in the experiment conducted using this end plate 18a was used as a reference for comparison with the end plates 18b to 18e of other comparative examples 2 to 5 and the end plate 18 of this embodiment. This is represented by the point 40 in FIG. 10 and the loss ratio is 100%.

  As shown in FIG. 5, the end plate 18 b of the comparative example 2 is formed to have a diameter smaller by 2 × ΔR than the diameter D of the laminated core 16, and no notch is formed on the outer peripheral portion. In Comparative Example 2, an experiment was performed using three types of end plates 18b having diameters reduced to three stages (corresponding to points 42, 44, and 46), and eddy current loss was measured. The result is indicated by a dashed line 48 in FIG. As is clear from this result, as the diameter of the end plate 18b becomes smaller (point 40 → point 42 → point 44 → point 46), the outer peripheral region where the eddy current loss is most likely to occur on the end plate 18b decreases. Thus, it can be seen that the eddy current loss is greatly reduced with respect to the reference point 40. However, in this case, the smaller the diameter of the end plate 18b, the more the openings of the magnet fixing agent filling hole 30 and the magnet mounting holes 19a and 19b are exposed, and the outer peripheral portion of the magnetic steel plate constituting the laminated iron core 16 is exposed. As described above, the problem that the pressing effect is drastically reduced occurs.

  The end plate 18c of Comparative Example 3 shown in FIG. 6 has the same diameter as the laminated iron core 16, and is formed with a notch 34 at the outer peripheral edge thereof with the d-axis as a central position. On the other hand, the end plate 18d of Comparative Example 4 shown in FIG. 7 has the same diameter as the laminated iron core 16, and has a notch 34 formed at the outer peripheral edge thereof with the q axis as the center position. In any of Comparative Examples 3 and 4, two types of end plates 18c and 18d having different cut depths K of the notch 34 were prepared, and experiments were performed to measure eddy current loss. The result is shown in FIG. 10 by the dotted line 53 connecting the points 40, 50 and 52 in the comparative example 3 and the two-dot chain line 58 connecting the points 40, 54 and 56 in the comparative example 3. For these, almost the same results are shown, and when the cutting depth K is shallow, the eddy current loss is suppressed to about 80% with respect to 100% of the reference point 40 as shown by the points 50 and 54, and When the penetration depth K is deep, the eddy current loss is suppressed from 100% of the reference point 40 to about 45 to 50% as indicated by the points 52 and 56. Here, the diameter in the comparative examples 3 and 4 is a diameter of an inscribed circle in contact with the deepest portion of each notch 34, and the end plate 18e of the comparative example 5 in FIG. 8 and the present embodiment in FIG. The same applies to the end plate 18.

  The end plate 18e of Comparative Example 5 shown in FIG. 7 has the same diameter as the laminated iron core 16, and is formed with a notch 34 at the outer peripheral edge with both the d-axis and the q-axis as the center position. An experimental result using this is shown by a thin solid line 62 connecting the points 40 and 60 in FIG. In this case, the eddy current loss is reduced from 100% of the reference point 40 to about 50% even if the cut depth K of the notch 34 is the same as the shallower one in the comparative examples 3 and 4 (corresponding to the points 50 and 54). It was able to be suppressed by.

  And the experimental result performed using the end plate 18 of this embodiment shown in FIG. 8 is shown by the thick continuous line 66 which connects the point 40 and the point 64 in FIG. In the end plate 18, as described above, the notch 34 is formed with reference to the center position 38 between the d-axis and the q-axis. In this case, even if the cut depth K of the notch 34 is the same as that of the comparative example 5, the eddy current loss can be suppressed from 100% of the reference point 40 to about 40%, which is higher than that of the comparative example 5. Furthermore, it has been found that a suppression effect of about 10% can be obtained.

  Therefore, from these experimental results, in order to more effectively suppress the eddy current loss generated in the end plate 18, the notch 34 is formed with reference to the center position 38 between the d-axis and the q-axis. It came to the conclusion that it was good.

  The rotor end plate and the rotating electric machine using the same according to the present invention are not limited to the above-described embodiments, and various improvements and modifications can be made without departing from the scope of the claims. .

  For example, the rotating electrical machine 10 functions as an electric motor that outputs the driving power by rotating the rotor 11 forward when the motor travels, such as a motor used as a power source of a hybrid vehicle, and the rotor 11 reverses during regeneration. Assuming application to a motor generator that functions as a generator that rotates and generates electric power for charging a battery, the outer peripheral edge of the end plate 18 is based on the center position between all d-axis and q-axis. The description has been given assuming that the notch 34 is formed. However, when the rotating electrical machine is used only as an electric motor or a generator, the rotating direction of the rotor is determined in one direction, so that the outer peripheral edge of the end plate is likely to cause eddy current loss in the determined rotating direction. It is only necessary to provide a notch in only the portion. That is, when the rotating electrical machine is used only as an electric motor, a notch is formed only on the upstream side of the d-axis with respect to the rotation direction of the rotor (see arrow Rm in FIG. 3) at the outer peripheral edge of the end plate. In addition, when the rotating electrical machine is used only as a generator, a notch is formed only on the downstream side of the d-axis with respect to the rotation direction of the rotor (see arrow Rg in FIG. 3) at the outer peripheral edge of the end plate. Also good.

  DESCRIPTION OF SYMBOLS 10 Rotating machine, 11 Rotor, 12 Stator, 14 Rotor shaft, 15 Magnetic steel plate, 16 Laminated iron core, 17a, 17b Magnet, 18 End plate for rotor, 19a, 19b Magnet mounting hole, 20 Stator iron core, 21 Teeth part, 22 Stator coil, 24 Hub member, 26 Magnetic pole, 28 Axis center, 30, 32 Magnet fixing agent filling hole, 34 Notch part, 38 Center position.

Claims (14)

In the rotor of a rotating electrical machine, comprising: a laminated core formed by laminating a plurality of magnetic steel plates in the axial direction of the rotor shaft; and a plurality of magnets arranged at predetermined intervals in the circumferential direction of the laminated core. An end plate for a rotor that is fixed to the rotor shaft in a state of sandwiching the laminated iron core from both sides in the axial direction,
A plurality of notches are provided in an outer peripheral edge, and the notches are based on a center position between the d-axis and the q-axis of the rotor around the axis of the rotor shaft with respect to the electrical angle. An end plate for a rotor, characterized by being formed as follows. The rotor end plate according to claim 1,
The end plate for a rotor, wherein the notch is formed in a shape having a maximum depth of cut at the center position. The rotor end plate according to claim 2,
The end plate for a rotor, wherein the notch is formed in a symmetrical shape in the circumferential direction with respect to the center position. The rotor end plate according to claim 1,
The laminated iron core has a cylindrical outer shape, the end plate is an annular flat plate having the same diameter as the laminated iron core, and the magnet is formed so as to penetrate in the axial direction in the vicinity of the outer periphery of the laminated iron core. An end plate for a rotor, wherein the rotor end plate is disposed so as to be inserted into a magnet mounting hole, and the cutout portion has a shape and a cutout depth so as not to expose an opening of the magnet mounting hole. The rotor end plate according to claim 1,
The laminated iron core has a cylindrical outer shape, the end plate is an annular flat plate having the same diameter as the laminated iron core, and the magnet is formed so as to penetrate in the axial direction in the vicinity of the outer periphery of the laminated iron core. A magnet fixing agent filling hole communicating in the axial direction is formed at the end of the magnet mounting hole in the laminated iron core, and the cutout portion is disposed in the magnet mounting hole. An end plate for a rotor, wherein the end plate is formed in a shape and a notch depth so as not to expose an opening of a magnet fixing agent filling hole. The rotor end plate according to claim 1,
When a rotating electrical machine in which the rotor including the end plate is incorporated is used only as a rotating electrical machine, the notch is formed on the upstream side of the d-axis with respect to the rotational direction of the rotor. End plate for rotor. The rotor end plate according to claim 1,
When the rotating electrical machine in which the rotor including the end plate is incorporated is used only as a generator, the notch is formed on the downstream side of the d-axis with respect to the rotation direction of the rotor. End plate for rotor. A rotating electrical machine comprising: a rotor that is a field flux generation source; and a stator in which a plurality of stator coils that generate a rotating magnetic field that rotates the rotor are wound around a plurality of sets of stator cores. ,
The rotor includes a rotor shaft, a laminated core formed by laminating a plurality of magnetic steel plates in the axial direction of the rotor shaft, and a plurality of magnets arranged at predetermined intervals in the circumferential direction of the laminated core. An end plate fixed to the rotor shaft in a state where the laminated iron core including the magnet is sandwiched from both sides in the axial direction,
A plurality of notches are provided on the outer peripheral edge of the end plate, and the notches are located between the d-axis and the q-axis of the rotor around the axis of the rotor shaft with respect to the electrical angle. A rotating electrical machine characterized by being formed with a center position as a reference. The rotating electrical machine according to claim 8,
The rotating electrical machine according to claim 1, wherein the cutout portion of the end plate is formed in a shape having a maximum cutting depth at the center position. The rotating electrical machine according to claim 8,
The rotary electric machine is characterized in that the notch is formed in a symmetrical shape in the circumferential direction with respect to the center position. The rotating electrical machine according to claim 8,
The laminated iron core constituting the rotor has a cylindrical outer shape, the end plate constituting the rotor is an annular flat plate having the same diameter as the laminated iron core, and the magnet is near the outer periphery of the laminated iron core. Is inserted into a magnet mounting hole that is formed in the axial direction so as to be inserted therein, and the notch of the end plate is formed in a shape and a notch depth so as not to expose the opening of the magnet mounting hole. A rotating electric machine characterized by The rotating electrical machine according to claim 8,
The laminated iron core has a cylindrical outer shape, the end plate is an annular flat plate having the same diameter as the laminated iron core, and the magnet is formed so as to penetrate in the axial direction in the vicinity of the outer periphery of the laminated iron core. A magnet fixing agent filling hole communicating in the axial direction is formed at the end of the magnet mounting hole in the laminated iron core, and the cutout portion is disposed in the magnet mounting hole. A rotating electrical machine having a shape and a notch depth so as not to expose an opening of a magnet fixing agent filling hole. The rotating electrical machine according to claim 8,
When the rotary electric machine is used only as a rotary electric machine, the notch portion of the end plate of the rotor is formed on the upstream side of the d-axis with respect to the rotation direction of the rotor. The rotating electrical machine according to claim 8,
When the rotating electrical machine is used only as a generator, the notch portion of the end plate of the rotor is formed on the downstream side of the d-axis with respect to the rotating direction of the rotor.

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