JP2007202363A - Rotary-electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary-electric machine which enables the higher revolution of a rotor by constituting it so that the stress generated in the magnet due to the centrifugal force at rotation of the rotor may not increase thereby enlarging the operation range, and also can secure the tenacity of a magnet at rotation of a rotor without enlarging a magnet holder. <P>SOLUTION: In the rotary-electric machine which has an air gap in its axial direction, with a rotor and a stator counterposed in its axial direction, a plurality of magnets 12a and 12b are arranged in the circumferential direction of the rotor, inside and outside in the radial direction of the rotor facing the air gap a of the rotor 10, so that the magnetic flux may pass in the radial direction of the rotor 10, and also the quantity of the magnets arranged outside in the radial direction of the rotor is made smaller than the quantity of magnets arranged inside in the radial direction of the rotor. The length in rotor's axial direction of each magnet 12b arranged outside in the radial direction of the rotor is shortened more than the length in rotor's axial direction of each magnet 12a arranged inside in the radial direction of the rotor. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rotating electrical machine, and more particularly, to an rotating electrical machine having an axial gap structure.

Conventionally, a “flat rotating machine” (see Patent Document 1), which is an axial gap type rotating electrical machine, is known.
In this “flat rotating machine”, at least two disc-shaped magnet mounting boards each having 8n permanent magnets fixed in order with different polarities are disposed with a gap therebetween, and are disposed with a gap therebetween. The permanent magnets of the two magnet mounting boards face each other with different polarities, are fixed to a shaft rotatably supported by a bracket, and 9n coils wound in a substantially triangular shape. And a disk-shaped stator coil plate arranged in a circle on the circumference and disposed in the gap of the magnet mounting board.

This realizes a flat rotating machine having 9n stator coils and 8n rotor magnetic poles.
Japanese Patent Laid-Open No. 11-187635

By the way, in the conventional axial gap type motor, if the magnet is placed too far on the air gap surface side of the rotor, the generated stress on the magnet due to the centrifugal force during the rotation of the rotor tends to increase. It will be restricted and the driving range will be narrowed. In addition, since the stress generated on the magnet is large, it is inevitable to increase the size of the magnet holding portion for ensuring the holding strength of the magnet when the rotor rotates.
An object of the present invention is to increase the operating range and increase the rotation speed of the rotor without increasing the stress generated on the magnet due to the centrifugal force when the rotor rotates, without increasing the size of the magnet holder. An object of the present invention is to provide a rotating electrical machine capable of ensuring the magnet holding strength during rotor rotation.

  To achieve the above object, a rotating electrical machine according to the present invention is a rotating electrical machine in which a rotor and a stator are opposed to each other in the axial direction and have an air gap in the axial direction so that magnetic flux passes along the radial direction of the rotor. A plurality of magnets are arranged along the rotor circumferential direction on the rotor radial inner side and the outer side facing the air gap of the rotor, and the magnet amount arranged on the rotor radial outer side is arranged on the rotor radial inner side. Less than the amount.

According to the present invention, the rotating electrical machine in which the rotor and the stator are opposed to each other in the axial direction and has an air gap in the axial direction has a rotor diameter that faces the air gap of the rotor so that the magnetic flux passes along the radial direction of the rotor. A plurality of magnets are arranged along the rotor circumferential direction on the inner side and the outer side in the direction, and the amount of magnets arranged on the outer side in the rotor radial direction is smaller than the amount of magnets arranged on the inner side in the rotor radial direction.
For this reason, the generated stress on the magnet due to the centrifugal force during rotor rotation is not increased, the operating range is expanded, the rotor can be rotated at a higher speed, and the rotor can be rotated without increasing the size of the magnet holder. The holding strength of the magnet can be ensured.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a partial explanatory view showing a schematic configuration of the rotating electrical machine according to the first embodiment of the present invention. As shown in FIG. 1, the rotating electrical machine has an axial gap type structure of a two-rotor one-stator in which two rotors 10 and one stator 11 are arranged facing each other in the axial (rotor rotating shaft 10a) direction. And has an air gap a in the axial direction.

  A plurality of sets of magnets (permanent magnets) 12 are arranged at substantially equal intervals along the circumferential direction of the rotor on the side surface of the air gap of each rotor 10 formed in a disk shape. It consists of a set of two magnets 12a arranged on the inner side in the direction and magnets 12b arranged on the outer side in the rotor radial direction. The magnet 12a and the magnet 12b have substantially the same shape except that the length in the rotor rotation axis direction is different, that is, the length of the magnet 12b in the rotor rotation axis direction is shorter than the length of the magnet 12a in the rotor rotation axis direction. It is arranged on the same radial direction. The magnets 12 have different polarities on the inner side and the outer side in the rotor radial direction and on opposite sides of the stator 11.

  That is, the magnet 12b disposed on the outer side in the rotor radial direction is smaller than the magnet 12a disposed on the inner side in the rotor radial direction, so that the mass of the entire magnet disposed on the outer side in the rotor radial direction is disposed on the inner side in the rotor radial direction. It becomes smaller than the mass of the whole magnet. For this reason, the centrifugal force applied to the magnet 12 during rotation of the rotor is reduced, and the stress generated on the magnet 12 due to the centrifugal force is reduced, so that the rotational speed of the rotor is not limited and the operating range is not narrowed. Note that the mass of the magnet disposed on the outer side in the rotor radial direction is 0, that is, the magnet does not have to be disposed on the outer side in the rotor radial direction.

  Further, since the stress generated on the magnet 12 due to the centrifugal force during the rotation of the rotor is reduced, a holding portion (refer to FIG. 1, broken line h) that has conventionally been provided on the outer periphery of the rotor to hold the magnet 12 is not provided. Therefore, it is possible to sufficiently secure the holding strength of the magnet 12 during the rotation of the rotor without increasing the size of the magnet holding portion, and it is possible to reduce the size of the entire rotor. That is, the centrifugal force acts on the magnet 12, but the higher the rotation, the larger the outer side in the rotor radial direction, the greater the centrifugal force. It is necessary to provide a magnet holding member having sufficient strength at the periphery, and naturally, the size of the entire rotor cannot be avoided.

Corresponding to these magnets 12, the stator 11 has a plurality of coils 13 each consisting of a set of two inside and outside of the stator in the radial direction of the stator, arranged at substantially equal intervals in the circumferential direction of the stator. The coil 13 is formed by winding a coil winding around a stator core 11 a penetrating both air gap side surfaces of the stator 11.
Therefore, in this rotating electrical machine, the magnetic flux passes through the rotor radial direction of each rotor 10 linking the magnet 12a disposed on the inner side in the rotor radial direction and the magnet 12b disposed on the outer side in the rotor radial direction, and the two magnets 12a and 12b are connected to each other. A magnetic path R that passes through the stator core 11a on the inner side and the outer side in the stator radial direction along the rotor rotation axis direction is formed.

As described above, the magnets are arranged on the inner side and the outer side in the rotor radial direction facing the air gap a of the rotor 10 so that the magnetic flux passes along the radial direction of the rotor 10, and the magnet 12b arranged on the outer side in the rotor radial direction. The mass is less than the mass of the magnet 12a arranged on the inner side in the rotor radial direction. For this reason, since the stress generated on the magnet due to the centrifugal force at the time of rotating the rotor is reduced, the operating range is expanded, the rotor can be rotated at a high speed, and the magnet holding strength at the time of rotating the rotor is ensured. The overall size can be reduced.
As a method of reducing the mass of the magnet arranged on the outer side in the rotor radial direction, for example, the magnet 12 on the outer side in the rotor radial direction may be structured in an IPM (Interior Permanent Magnet) structure and arranged in a V shape.

(Second Embodiment)
FIG. 2 is a partial explanatory view showing a schematic configuration of the rotating electrical machine according to the second embodiment of the present invention. As shown in FIG. 2, in this embodiment, the width of the air gap a of each rotor 10 is different between the inner side and the outer side in the rotor radial direction, that is, the air on the outer side in the rotor radial direction where the magnets 12b are arranged. The gap a2 is formed wider than the air gap a1 on the inner side in the rotor radial direction where the magnet 12a is disposed. Other configurations and operations are the same as those of the rotating electrical machine of the first embodiment (see FIG. 1).
In this way, considering the runout of the rotor 10, the total air gap can be reduced by changing the width of the air gap a on the inner side and the outer side in the rotor radial direction, so that the rotational torque of the rotor is improved.

(Third embodiment)
3A and 3B show a rotor of a rotating electrical machine according to a third embodiment of the present invention, in which FIG. 3A is a plan explanatory view, FIG. 3B is a cross-sectional explanatory view taken along line BB in FIG. These are sectional explanatory drawings which follow the CB line of (a). As shown in FIG. 3, in this embodiment, each magnet 12a arranged on the inner side in the rotor radial direction and each magnet 12b arranged on the outer side in the rotor radial direction have different lengths in the circumferential direction of the rotor. The rotor circumferential length is shorter than the rotor circumferential length of the magnet 12a (see (a)). Other configurations and operations are the same as those of the rotating electrical machine of the first embodiment (see FIG. 1).
In other words, since the magnet 12b arranged on the outer side in the rotor radial direction is shorter than the magnet 12a arranged on the inner side in the rotor radial direction, the mass of the whole magnet arranged on the outer side in the rotor radial direction is the entire magnet arranged on the inner side in the rotor radial direction. Less than the mass of

  The magnet 12a and the magnet 12b are embedded in a nonmagnetic portion 15 having a thickness of an outward flange 14a on the periphery of the disk, which is formed in a disk-shaped nonmagnetic case 14 made of a nonmagnetic material such as aluminum (( b) and (c)). The embedded magnets 12a and 12b have a magnetic yoke (back yoke) 16 interposed between the magnet 12a and the magnet 12b, and end surfaces are exposed from the nonmagnetic portion 15 ((b), ( c)). Each magnet 12a and each magnet 12b are concentrically arranged around the rotor rotation shaft 10a in the center of the disk, and each magnet 12b is sufficiently separated from the end extension position of each magnet 12a, that is, Between each magnet 12b, it has sufficient adjoining gap by the nonmagnetic part 15 (refer to (a) and (c)).

Thus, by making the length of the magnet 12b arranged outside the rotor radial direction shorter than the length of the magnet 12a arranged inside the rotor radial direction, the mass of the magnet 12b is made smaller than the mass of the magnet 12a. Since the stress generated on the magnet due to centrifugal force during rotor rotation is reduced, the operating range is expanded to enable higher rotation of the rotor, and the magnet holding strength during rotor rotation without increasing the size of the magnet holder Can be secured.
FIG. 4 is a cross-sectional explanatory view similar to FIG. 3C, showing another example of the rotor of FIG. As shown in FIG. 4, you may form continuously the magnetic body yoke 16 interposed between each embedded magnet 12a and each magnet 12b, and the nonmagnetic case 14 in the rotor circumferential direction. That is, the magnetic yoke 16 is also disposed between the nonmagnetic portion 15 filling the adjacent gap between the magnets 12 b and the nonmagnetic case 14.

(Fourth embodiment)
5A and 5B show a rotor of a rotating electrical machine according to a fourth embodiment of the present invention, in which FIG. 5A is a plan explanatory view, FIG. 5B is a cross-sectional explanatory view taken along line BB in FIG. These are sectional explanatory drawings which follow the CB line of (a). As shown in FIG. 5, in this embodiment, the length of the magnet 12b arranged on the outer side in the rotor radial direction in the third embodiment is made shorter than the length of the magnet 12a arranged on the inner side in the rotor radial direction. A magnetic body is disposed between the generated end portion of each magnet 12b (rotor circumferential end portion) and the end extension of each magnet 12a (see (a)). Other configurations and operations are the same as those of the rotating electrical machine of the third embodiment (see FIG. 3).

In other words, the magnetic yoke 16 is formed to protrude to the magnet arrangement surface so that the magnet 12b is extended to the end extension of the magnet 12a arranged on the rotor radial inner side at the end of the magnet 12b arranged on the outer side in the rotor radial direction. To do. Thereby, the rotor rotational torque can be improved by the reluctance torque.
FIG. 6 shows another example of the rotor of FIG. 5, (a) is a cross-sectional explanatory view similar to FIG. 5 (a), (b) is a cross-sectional explanatory view similar to FIG. 3 (b), and (c). FIG. 4 is a cross-sectional explanatory view similar to FIG. As shown in FIG. 6, a magnetic yoke 16 that protrudes from the end of the magnet 12b may be formed continuously in the rotor circumferential direction. That is, the magnetic yoke 16 is also disposed in the adjacent gap between the magnets 12b. Thereby, the rotor rotational torque can be improved by the reluctance torque.

(Fifth embodiment)
FIG. 7: shows the rotor of the rotary electric machine which concerns on 5th Embodiment of this invention, (a) is plane explanatory drawing, (b) is sectional explanatory drawing along the BB line of (a), (c). These are sectional explanatory drawings which follow the CB line of (a). As shown in FIG. 7, in this embodiment, the magnets 12b arranged on the outer side in the radial direction of the rotor in the fourth embodiment are arranged shifted by approximately 45 ° in the rotor circumferential direction on the rotor plane, and d The inductance (Ld) in the axial direction is made larger than the inductance (Lq) in the q-axis direction (Ld> Lq) to make a strong field (see (a)). Other configurations and operations are the same as those of the rotating electrical machine of the fourth embodiment (see FIG. 5).
Thereby, the rotor rotational torque can be improved by the strong field.

FIG. 8 is a cross-sectional explanatory view similar to FIG. 7C, showing another example of the rotor of FIG. As shown in FIG. 8, the magnetic yokes 16 interposed between the embedded magnets 12a and 12b and the nonmagnetic case 14 may be formed continuously in the rotor circumferential direction. That is, the magnetic yoke 16 is also disposed between the nonmagnetic portion 15 filling the adjacent gap between the magnets 12 b and the nonmagnetic case 14.
In the rotating electrical machine according to the present invention, in addition to the configuration of the rotor and stator shown in the above-described embodiment, the magnetic flux forms a magnetic path that passes through the rotor radial direction, and the rotor radial direction outer side than the rotor radial direction inner side. Various configurations of the rotor and the stator are conceivable in which the mass of the magnet on which the direction is arranged is small.

  9A and 9B show another configuration example of a rotor and a stator having an axial gap configuration according to the present invention. FIG. 9A is a partial explanatory view of the configuration example 1, and FIG. 9B is a partial explanatory view of the configuration example 2. 10A and 10B show a configuration example of a rotor and a stator having an axial gap configuration and a radial gap configuration according to the present invention. FIG. 10A is a partial explanatory view of the configuration example 1, and FIG. 10B is a partial explanatory view of the configuration example 2. is there.

As shown in FIG. 9, two rotors 10 and one stator 11 are arranged facing each other in the axial direction, and an air gap a is provided in the axial direction. 1), the two rotors 10 may be connected and integrated along the rotor rotation axis 20a (see (a)).
Correspondingly, the stator 11 is a stator 21 that is formed in an annular shape that is positioned outside the connecting column portion 20b of the rotor 20 with the coil 13 disposed only on the outer side in the stator radial direction. And the rotor 20 shall have only the magnet 12a arrange | positioned inside the rotor radial direction of the rotor 10. FIG.

Accordingly, in this rotating electrical machine, the magnetic flux R passes through the rotor radial direction of the rotor 20 from each magnet 12a toward the stator core 21a, and passes through the connecting column portion 20b and the stator core 21a along the rotor rotation axis direction. Is formed (see (a)).
In addition, an axial gap type structure of a two-rotor one stator in which two rotors 10 and one stator 11 are arranged facing each other in the axial (rotor rotating shaft 10a) direction and an air gap a is provided in the axial direction ( In FIG. 1), the stator 11 may be a stator 22 in which the winding direction of the coil winding is changed (see (b)). That is, the stator 22 has a coil 23 formed by winding a coil winding around the stator core 22a along the rotor rotation axis direction.

Correspondingly, each rotor 10 has only magnets 12a arranged on the inner side in the rotor radial direction, and both magnets 12a arranged opposite to each other have the same polarity.
Therefore, in this rotating electrical machine, the magnetic flux passes from one magnet 12a through the rotor radial direction of one rotor 10 and the stator radial direction of the stator core 22a, and passes through one magnet 12a along the rotor rotational axis direction. 22a passes through the inner and outer sides of the stator in the radial direction of the magnetic path R1, and the other magnet 12a passes through the rotor in the radial direction of the other rotor 10 and the stator in the radial direction of the stator core 22a. A magnetic path R2 passing through the stator radial direction inner and outer sides of the stator core 22a through 12a is formed (see (b)).

As shown in FIG. 10, one rotor 24 and one stator 25 are arranged to face each other in the axial (rotor rotating shaft 24a) direction, and an air gap a is formed in the axial direction and an air gap b is formed in the radial direction. Each of the rotors may have an axial gap type structure of one rotor and one stator.
That is, in an axial gap type structure of two rotors and one stator (see FIG. 1), one rotor is formed, and an outer peripheral portion 24b of the rotor 24 is formed on the outer peripheral side of the stator 25 to form an outward flange shape. The rotor 24 includes only a magnet 12a disposed on the inner side in the rotor radial direction, and is a stator 25 on which a coil 26 is mounted so as to correspond to the magnet 12a. The coil 26 is formed by winding a coil winding around the stator core 25 a located at the outer edge of the stator 25 along the rotor rotation axis direction.

As a result, a radial air gap is formed on the outer side of the rotor 24 in the radial direction of the rotor, the outer air gap in the radial direction of the rotor becomes the radial air gap b, and the magnet 12a disposed on the inner side of the rotor in the radial direction of the rotor It is arranged facing a.
Therefore, in this rotating electrical machine, the magnetic flux passes through the magnet 12a and passes through the rotor radial direction of the rotor 24 and the stator radial direction of the stator core 25a, and also passes through the outer peripheral portion 24b and the stator core 25a along the rotor rotational axis direction. A path R is formed (see (a)).
A rotor 27 formed by integrating two rotors and a stator 28 are arranged facing each other in the axial (rotor rotating shaft 27a) direction, and the air gap a in the axial direction and the air gap in the radial direction. It is good also as an axial gap type structure of 1 rotor 1 stator which each provided b.

That is, in the two-rotor-one-stator axial gap structure (see FIG. 1), the two rotors 10 are connected to and integrated in the rotor rotation axis direction, and the rotor 27 is integrated, and the magnet disposed on the inner side in the rotor radial direction. 12a is a stator 28 that is arranged facing the radial air gap b (see (b)) and is formed in an annular shape that is positioned outside the connecting column portion 27b of the rotor 27. A coil 29 is attached to the stator 28 so as to correspond to the magnet 12a. The coil 29 winds the coil winding around the stator core 28a located at the outer edge of the stator 28 along the rotor rotation axis direction. It is formed.
Thus, a radial air gap is formed on the rotor radial inner side of the rotor 27, and the magnet 12a disposed on the rotor radial inner side is disposed facing the radial air gap b. Is the axial air gap a.

  Therefore, in this rotating electric machine, the magnetic flux passes through the magnet 12a, passes through the rotor radial direction on one side of the rotor 27 in the rotor rotational axis direction and the stator radial direction of the stator core 28a, and is connected along the rotor rotational axis direction. 27 b and the stator core 28 a, the magnetic path R 1, the magnet 12 a, the rotor 27 on the other side of the rotor rotational axis direction of the rotor 27, and the stator core 28 a on the stator radial direction and along the rotor rotational axis direction. A magnetic path R2 passing through the portion 27b and the stator core 28a is formed (see (b)).

  As described above, according to the present invention, the rotating electrical machine in which the rotor and the stator are arranged opposite to each other in the axial direction and has an air gap in the axial direction is arranged in the air gap of the rotor so that the magnetic flux passes along the radial direction of the rotor. A plurality of magnets are arranged along the circumferential direction of the rotor on the inner side and the outer side of the rotor, and the amount of magnets arranged on the outer side in the rotor radial direction is smaller than the amount of magnets arranged on the inner side in the rotor radial direction. Therefore, the generated stress to the magnet due to the centrifugal force during rotor rotation is not increased, the operating range is expanded and the rotor can be rotated at a high speed, and the rotor can be rotated without increasing the size of the magnet holder. The holding strength of the magnet can be ensured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial explanatory view showing a schematic configuration of a rotating electrical machine according to a first embodiment of the present invention. It is a partial explanatory view showing a schematic configuration of a rotating electrical machine according to a second embodiment of the present invention. The rotor of the rotary electric machine which concerns on 3rd Embodiment of this invention is shown, (a) is plane explanatory drawing, (b) is sectional explanatory drawing which follows the BB line of (a), (c) is (a). It is sectional explanatory drawing in alignment with the CB line | wire. FIG. 4 is a cross-sectional explanatory view similar to FIG. 3C, showing another example of the rotor of FIG. 3. The rotor of the rotary electric machine which concerns on 4th Embodiment of this invention is shown, (a) is plane explanatory drawing, (b) is sectional explanatory drawing which follows the BB line of (a), (c) is (a). It is sectional explanatory drawing in alignment with the CB line | wire. FIG. 5 shows another example of the rotor of FIG. 5, in which (a) is a cross-sectional explanatory view similar to FIG. 5 (a), (b) is a cross-sectional explanatory view similar to FIG. 3 (b), and (c) is FIG. It is sectional explanatory drawing similar to c). The rotor of the rotary electric machine which concerns on 5th Embodiment of this invention is shown, (a) is plane explanatory drawing, (b) is sectional explanatory drawing which follows the BB line of (a), (c) is (a). It is sectional explanatory drawing in alignment with the CB line | wire. FIG. 8 is a cross-sectional explanatory view similar to FIG. 7C, showing another example of the rotor of FIG. 7. The other example of a structure of the rotor and stator which have an axial gap structure which concerns on this invention is shown, (a) is the partial explanatory drawing of the structural example 1, (b) is the partial explanatory drawing of the structural example 2. FIG. FIG. 2 shows a configuration example of a rotor and a stator having an axial gap configuration and a radial gap configuration according to the present invention, in which (a) is a partial explanatory view of configuration example 1 and (b) is a partial explanatory view of configuration example 2. FIG.

Explanation of symbols

10, 20, 24, 27 Rotor 10a, 20a, 24a, 27a Rotor rotating shaft 11, 22, 22, 25, 28 Stator 11a, 21a, 22a, 25a, 28a Stator core 12, 12a, 12b Magnets 13, 23, 26, 29 Coil 14 Non-magnetic case 14a Outward flange 15 Non-magnetic part 16 Magnetic yoke 20b, 27b Connection column part 24b Outer peripheral part a, a1, a2, b Air gap R, R1, R2 Magnetic path

Claims (11)

In the rotating electrical machine in which the rotor and the stator are arranged opposite to each other in the axial direction and have an air gap in the axial direction,
A plurality of magnets are arranged along the rotor circumferential direction on the rotor radial inner side and the outer side facing the air gap of the rotor so that the magnetic flux passes along the rotor radial direction, and on the rotor radial outer side. A rotating electrical machine characterized in that the amount of magnets to be arranged is smaller than the amount of magnets arranged on the inner side in the rotor radial direction.   2. The rotation according to claim 1, wherein the length of each magnet arranged on the outer side in the rotor radial direction in the rotor rotational axis direction is shorter than the length of each magnet arranged on the inner side in the rotor radial direction. Electric.   3. The rotating electrical machine according to claim 1, wherein the air gap is wider on the outer side in the rotor radial direction than on the inner side in the rotor radial direction.   The rotor circumferential length of each magnet arranged on the outer side in the rotor radial direction is shorter than the rotor circumferential length of each magnet arranged on the inner side in the rotor radial direction of the magnet. The rotating electrical machine described.   The rotating electrical machine according to claim 4, wherein the back yoke of each magnet is continuous in the rotor circumferential direction.   6. The rotating electrical machine according to claim 4, wherein a magnetic body is disposed at a rotor circumferential end of each magnet disposed on the outer side in the rotor radial direction.   The rotating electrical machine according to claim 6, wherein the magnetic body is continuous in a rotor circumferential direction.   8. The rotating electrical machine according to claim 6, wherein the magnet is arranged so that the inductance in the d-axis direction is larger than the inductance in the q-axis direction to form a strong field.   The rotating electrical machine according to claim 1, wherein the amount of magnets arranged on the inner side in the rotor radial direction is set to zero.   A radial air gap is formed outside the rotor in the radial direction of the rotor, the air gap outside the rotor in the radial direction is used as a radial air gap, and a magnet arranged on the inner side in the rotor radial direction faces the axial air gap. The rotating electrical machine according to any one of claims 1 to 9, wherein the rotating electrical machine is arranged.   A radial air gap is formed on the rotor radial inner side of the rotor, a magnet arranged on the rotor radial inner side is arranged facing the radial air gap, and the air gap on the outer side of the rotor is axially arranged. The rotating electrical machine according to any one of claims 1 to 9, wherein an air gap is provided.

Images