JP2014183614A - Magnetic modulation motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic modulation motor that is able to make the flow of magnetic flux satisfactory by decreasing a magnetic resistance in a gap.SOLUTION: A magnetic modulation motor comprises: one stator 2 composing an armature; a magnetic induction rotor 4 arranged radially inside this stator 2; and a magnetic rotor 6 arranged radially outside the stator 2. The magnetic induction rotor 4 is one in which segments 9 with an integer k are magnetically separated and arranged in a circumferential direction at equal intervals. The magnetic rotor 6 is one that has a permanent magnet 11 with an n number of pole pairs and magnetized such that the magnetic pole face of the permanent magnet 11 facing the stator 2 have different polarities alternately in the circumferential direction. With this configuration, compared to a conventional technique in which a magnetic induction rotor 4 and a magnetic rotor 6 are adjacent to each other in a radial direction, the length of the gap between the magnetic induction rotor 4 and magnetic rotor 6 and the stator 2 can be shortened. Accordingly, magnetic resistance in the gap decreases, making it possible to make the flow of a magnetic flux satisfactory.

Description

  The present invention relates to a magnetic modulation motor suitable for use in, for example, a power device of a hybrid vehicle that travels with the power of an internal combustion engine and the power of a battery.

As a prior art, there is a power unit disclosed in Patent Document 1.
Conventionally, as an example of a motor using the magnetic modulation principle, a magnetic modulation motor in which two rotors (magnetic induction rotor and magnet rotor) having different rotational speeds are arranged inside a stator constituting an armature has been disclosed.
This magnetic modulation motor can operate the relationship between the speed of the rotating magnetic field generated in the stator and the rotational speed of the two rotors in the same manner as a known mechanical planetary gear. Also, unlike mechanical planetary gears, where gears mesh with each other to transmit power, they operate in a non-contact manner, so oil lubrication is not required and transmission efficiency is good, so they are superior to replacing mechanical planetary gears. Expected as a technology.

JP 2010-017032 A

The above Patent Document 1 has the following problems.
There is a possibility that the magnetic induction rotor and the magnet rotor may vibrate in the radial direction due to a difference in radial displacement caused by centrifugal force or magnetic attraction force depending on the difference in the constituent materials and the shape of each other.
In the configuration of the magnetic modulation motor described in Patent Document 1, two rotors are arranged inside the stator, that is, since the two rotors are adjacent in the radial direction, each vibrates in the radial direction. The displacement difference may be relatively large. Therefore, in order to prevent contact between the rotors, it is necessary to ensure a sufficient gap between the two rotors. As a result, the magnetic resistance at the gap is increased and the flow of magnetic flux is deteriorated, so that the motor performance may be deteriorated.
The present invention has been made based on the above circumstances, and an object of the present invention is to provide a magnetic modulation motor capable of reducing the magnetic resistance in the gap and improving the flow of magnetic flux.

  The magnetic modulation motor of the present invention can be rotated with a stator core having a plurality of slots wound with multiphase windings having a number of pole pairs of m, and a gap on the inner side and the outer side in the radial direction of the stator. Of the two rotors, one of the rotors has a magnetic conduction path that forms magnetic flux paths by an integer k, and both ends of the magnetic conduction path face the stator. Thus, the other rotor has a permanent magnet whose number and magnetization arrangement are selected so that the number n of pole pairs is the sum or difference of m and k. And it is a magnet rotor which arranged the permanent magnet so that the magnetic pole surface facing a stator may become a different polarity alternately by the circumferential direction, It is characterized by the above-mentioned.

According to the above configuration, since the two rotors are arranged on both the inner and outer sides of the stator, the two rotors having a possibility of causing radial displacement are both adjacent to only the stationary stator. That is, since the two rotors are not adjacent to each other through the gap, even if the two rotors vibrate in the radial direction, the two rotors do not contact each other.
As a result, the gap set between the two rotors and the stator may be large enough to allow the displacement of one rotating body, so it is set between the two rotors described in Patent Document 1. Can be shorter than the gap length. As a result, the magnetic resistance in the gap is reduced and the flow of magnetic flux can be improved, so that the motor performance is improved.

FIG. 3 is a cross-sectional view orthogonal to the axial direction of the magnetic modulation motor according to the first embodiment. 1 is a simplified diagram illustrating an overall configuration of a magnetic modulation motor according to Embodiment 1. FIG. It is a top view which shows a part of stator iron core. It is the connection diagram which connected the stator winding to the inverter. It is a wave form diagram of symmetrical three-phase alternating current excited by a stator winding. It is a model figure for demonstrating the basic operation | movement of a magnetic modulation motor. It is explanatory drawing which showed typically the rotational motion of two rotors and a stator. (A) A collinear diagram explaining the relationship between the combination of the number of poles of the two rotors and the stator and the rotational speed, and (b) the rotating magnetic field of the stator and the rotating direction of the magnet rotor when the magnetic induction rotor is stopped. It is an alignment chart to explain. It is magnetic operation explanatory drawing of the magnetic modulation motor using a simple model. (A) The longitudinal cross-sectional view of the stator which concerns on Example 2, (b) The top view which shows a part of stator iron core.

  The mode for carrying out the present invention will be described in detail with reference to the following examples.

Example 1
In the first embodiment, an example in which the magnetic modulation motor of the present invention is applied to a power device of a hybrid vehicle that runs on engine power and battery power will be described.
As shown in FIG. 2, the magnetic modulation motor 1 includes one stator 2 constituting an armature, and a magnetic induction rotor 4 that is disposed radially inside the stator 2 and rotates integrally with the first rotating shaft 3. And a magnet rotor 6 that is disposed radially outside the stator 2 and rotates integrally with the second rotating shaft 5.
The first rotary shaft 3 and the second rotary shaft 5 are rotatably supported by the motor frame 7 via bearings (not shown), respectively, and the first rotary shaft 3 is connected to the output shaft of the engine. Two rotating shafts 5 are connected to the driven shaft of the transmission.
The stator 2 includes a stator core 2a configured by stacking a plurality of core sheets formed by punching a plurality (72 in the first embodiment) of slots 2s (see FIG. 1) in an electromagnetic steel sheet, and the stator core 2a. And the stator winding 2b wound around.

As shown in FIG. 1, the stator iron core 2a has 72 teeth 2t adjacent in the circumferential direction via slots 2s, and the 72 teeth 2t are partially coupled. Specifically, as shown in FIG. 3, teeth 2t adjacent in the circumferential direction are coupled to each other at the inner diameter side end, and 72 teeth 2t are arranged at equal pitches in the circumferential direction through the slots 2s. ing. Hereinafter, a portion where the 72 teeth 2t are coupled to each other is referred to as a teeth coupling portion 2c.
Further, as shown in FIG. 2, the stator 2 is provided with a stator fixing portion 2d on one side (right side in the drawing) of the stator core 2a, and is fixed to the motor frame 7 via the stator fixing portion 2d. . For example, the stator fixing portion 2d can be provided by extending the tooth coupling portion 2c in the axial direction. Alternatively, apart from the teeth coupling portion 2c, a dedicated stator fixing portion 2d can be provided by, for example, a nonmagnetic SUS material. As shown in FIG. 2, the stator fixing portion 2d is provided so as to protrude in the axial direction from the axial height of the coil end of the stator winding 2b.

The stator winding 2b is formed by a three-phase winding having m pole pairs (m = 6 in the first embodiment), and is distributedly wound around the stator iron core 2a as shown in FIG. FIG. 1 shows a sectional view in the radial direction orthogonal to the axial direction of the magnetic modulation motor 1, but hatching for displaying the section is omitted. In the stator winding 2b, as shown in FIG. 4, one end of each phase (U phase, V phase, W phase) forms a neutral point O and is star-connected, and each phase (U phase, V phase, The other end of the (W phase) is connected to each output terminal 8u, 8v, 8w of the inverter 8.
The inverter 8 includes, for example, a semiconductor switching element Tr such as an IGBT and a diode D connected in antiparallel to the switching element Tr, and converts DC power obtained from the storage battery B of the vehicle into AC power. An exciting current is supplied to the stator winding 2b. Thereby, as shown in FIG. 5, symmetrical three-phase alternating current having a phase difference of 120 degrees is energized to each phase (U phase, V phase, W phase) of the stator winding 2b.

As shown in FIG. 1, the magnetic induction rotor 4 includes a segment 9 made of a soft magnetic material having an integer k (k = 10 in the first embodiment), and a rotor hub 10 that holds the ten segments 9. .
The segment 9 is provided as a magnetic conduction path that forms a path of magnetic flux according to claim 1 of the present invention. In the first embodiment, the segment 9 is formed in a substantially V shape, and both ends of the substantially V shape are the stator 2. A magnetic flux entrance / exit 9a is formed facing the inner peripheral surface.
The rotor hub 10 is formed of, for example, a high-strength aluminum material that is a non-magnetic and good electrical conductor, and is die-cast with ten segments 9 embedded at equal intervals in the circumferential direction. However, each segment 9 is exposed at the outer peripheral surface of the rotor hub 10 at both end surfaces forming the magnetic flux entrance / exit 9a.
The magnetic induction rotor 4 includes a first rotary shaft 3 fixed to a center hole 10a (see FIG. 1) passing through the central portion of the rotor hub 10 in the axial direction by serration fitting or the like. Rotates together.

As shown in FIG. 1, the magnet rotor 6 holds a permanent magnet 11 having a pole pair number n (n = 4 in the first embodiment) that is the sum or difference of m and k, and the eight permanent magnets 11. It is composed of a ring-shaped soft magnetic yoke 12.
The permanent magnet 11 is fixed to the inner peripheral surface of the soft magnetic yoke 12 by adhesion or the like, is magnetized in the radial direction, and the magnets adjacent in the circumferential direction have different polarities, that is, an S pole and an N pole. Are alternately arranged.
The soft magnetic yoke 12 forms a magnetic circuit in which magnetic flux flows on the outer periphery of the permanent magnet 11.
As shown in FIG. 2, the magnet rotor 6 is connected to the second rotary shaft 5 via a rotor disk 13 formed of, for example, a non-magnetic stainless steel, and is integrated with the second rotary shaft 5. Rotate to.

Next, the basic operation of the magnetic modulation motor 1 will be described with reference to FIGS.
FIG. 6 is a simplified model diagram of the magnetic circuit of the magnetic modulation motor 1, and shows the stator 2, the magnetic induction rotor 4, and the magnet rotor 6 in order from the top to the bottom of the figure. A part of the shape developed is shown. The description will be made assuming that the magnetic induction rotor 4 is stopped.
The stator 2 is wound at a pitch at which multiphase windings (windings are omitted in the figure) form 12 pole pairs. In the magnetic induction rotor 4, 20 soft magnetic bodies 4a (corresponding to the segments 9 of the first embodiment) are magnetically separated and arranged at regular intervals in the circumferential direction. The magnet rotor 6 is configured by arranging 8-pole pairs of permanent magnets 11 in the circumferential direction, and is arranged such that the polarities magnetized in the radial direction (the vertical direction in the figure) are different between adjacent magnets.

Although FIG. 6 shows an example of a model in which the magnetic induction rotor 4 is disposed between the stator 2 and the magnet rotor 6, the order of the stator 2 and the two rotors 4 and 6 is not limited to this. That is, as described in the first embodiment, the operation principle is the same even when the two rotors 4 and 6 are arranged on both the inner and outer sides of the stator 2.
When the magnet rotor 6 moves in the direction indicated by the arrow, a magnetic flux flows from the magnet rotor 6 to the stator 2 using the magnetic induction rotor 4 as a filter. That is, in the magnetic induction rotor 4, since the soft magnetic bodies 4a that are 20 magnetic good conductors and the spaces that are 20 magnetic non-conductors are alternately present, an 8-pole pair of the magnet rotor 6 is provided. The sum or difference frequency component of the frequency component and the frequency component of the 20 pole pair of the magnetic induction rotor 4 passes through the magnetic induction rotor 4 and flows to the stator 2.

Accordingly, the stator 2 has a number of pole pairs that catch the sum or difference of the frequency components of the 8 pole pair and the 20 pole pair, that is, a 28-pole pair or a 12-pole multiphase winding. Thus, energy can be exchanged magnetically between the magnet rotor 6 and the magnetic induction rotor 4. That is, it functions as the magnetic modulation motor 1 in which electromagnetic force acts on the three of the stator 2, the magnet rotor 6 and the magnetic induction rotor 4.
If this principle is used, it can operate like a known mechanical planetary gear mechanism. This mechanism will be described with reference to a collinear diagram (see FIG. 8) used in the description of the planetary gear mechanism in the field of mechanical engineering.

FIG. 7 schematically shows the rotating magnetic field produced by the stator 2, the rotating motion of the magnetic induction rotor 4, and the rotating motion of the magnet rotor 6. The speed of the rotating magnetic field of the stator 2 is ωm, and the magnetic induction rotor is shown in FIG. 4 is ωk, and the rotational speed of the magnet rotor 6 is ωn.
As shown in FIG. 8A, the respective rotation speeds have a relationship of being aligned on a straight line that follows a hypotenuse of a trapezoid having a predetermined ratio of sides. The reason for this relationship is that the stator 2 is operated by the difference in frequency components between the magnetic induction rotor 4 and the magnet rotor 6 described in FIG. That is, since the product of each rotational speed and the number of pole pairs corresponds to the frequency component, the relationship of the following equation (1) can be obtained in consideration of the difference between them.

ωk = {8 / (12 + 8)} × ωn + {12 / (12 + 8)} × ωm
= (2/5) × ωn + (3/5) × ωm ……………………………… (1)
The relationship of the expression (1) means that the rotational speeds ωm, ωk, and ωn shown in the drawing are aligned on a straight line. This relationship is called a collinear relationship.
Here, an example of operation when the magnetic induction rotor 4 is stopped will be described.
In this case, since ωk = 0, ωn = − (3/2) × ωm.
Referring to the collinear diagram shown in FIG. 8B, it can be seen that the operation is to rotate the magnet rotor 6 in the direction opposite to the rotating magnetic field of the stator 2.

Although the basic operation of the magnetic modulation motor 1 has been described above, the viewpoint of the magnetic phenomenon using a simple model in which the number of poles of the stator 2, the magnetic induction rotor 4, and the magnet rotor 6 is further reduced. I will add a description.
FIG. 9 shows a model including a stator 2 having a pole pair number m = 3, a magnetic induction rotor 4 having a pole pair number k = 4, and a magnet rotor 6 having a pole pair number n = 1. The change of the rotation angle of the magnet rotor 6 when changing the rotating magnetic field of the stator 2 to (e) is shown.
First, in the positional relationship shown in FIG. 6A, when a magnetic field is generated in the stator 2, the soft magnetic body 4a of the magnetic induction rotor 4 positioned in the vicinity of the magnetic field indicated by the circled arrow in FIG. Be guided. Then, the N pole of the magnet rotor 6 in the vicinity thereof is repelled and receives a rotational force counterclockwise (CCW).

Next, as shown in the positional relationship of FIG. 5B, when the magnetic field of the stator 2 is rotating slightly clockwise (CW), the soft magnetic body 4a of the magnetic induction rotor 4 has the polarity of the N pole. Although slightly weak, it is still N-pole, and the magnet rotor 6 rotates to a relationship that is completely orthogonal to the soft magnetic body 4a of the magnetic induction rotor 4. Furthermore, in the positional relationship shown in FIG. 6C, the magnetic rotor 6 has a large repulsive force because the soft magnetic body 4a facing the N pole of the magnet rotor 6 is magnetically induced to the N pole. Upon receipt, it further rotates in the same direction (counterclockwise).
As described above, when the rotating magnetic field of the stator 2 moves with the magnetic induction rotor 4 fixed, the magnet rotor 6 moves in the direction opposite to the moving direction of the rotating magnetic field, as shown in FIGS. It is understood that it rotates. That is, as shown in the collinear diagram of FIG. 8B, it can be seen that the direction of the rotating magnetic field of the stator 2 and the rotating direction of the magnet rotor 6 are in a reverse relationship.

(Operation and Effect of Example 1)
In the magnetic modulation motor 1 according to the first embodiment, the magnetic induction rotor 4 and the magnet rotor 6 are arranged on both the inner and outer sides of the stator 2. Only the stationary stator 2 is adjacent via a gap. That is, since the magnetic induction rotor 4 and the magnet rotor 6 are not adjacent to each other in the radial direction via a gap, even if the magnetic induction rotor 4 and the magnet rotor 6 vibrate in the radial direction, the magnetic induction rotor 4 and the magnet rotor 6 does not come into contact.
As a result, the gap set between the two rotors 4 and 6 and the stator 2 may be large enough to allow displacement of one rotating body, so that the gap between the two rotors described in Patent Document 1 is sufficient. It can be shortened from the gap length set to. As a result, the magnetic resistance at the gap is reduced and the flow of magnetic flux can be improved, so that the motor performance (particularly torque) is improved.

In addition, the magnetic induction rotor 4 has ten segments 9 forming a path for magnetic flux held by an aluminum material that is a nonmagnetic metal, and is magnetically separated from each other by the aluminum material and arranged at equal intervals in the circumferential direction. The Thereby, since the magnetic flux leakage between poles can be suppressed, magnetic modulation can be performed satisfactorily.
By the way, in the configuration in which two rotors are arranged on both the inner and outer sides of the stator, the variation in angular position appears more greatly in the inner rotor having a smaller outer diameter than in the outer rotor having a larger outer diameter. On the other hand, in the magnetic induction rotor 4 according to the first embodiment, since the rotor hub 10 is manufactured by aluminum die casting, the ten segments 9 embedded in the rotor hub 10 can be accurately arranged in the circumferential direction. Even if it is arranged on the side, the influence of angular deviation can be suppressed. On the other hand, by arranging the magnet rotor 6 having a large displacement of the magnet position in the circumferential direction on the outer diameter side of the stator 2, there is an advantage that the angle shift of the magnet position can be reduced.

Furthermore, the teeth 2t adjacent to each other in the circumferential direction of the stator core 2a are partially coupled to each other so that all the teeth 2t are arranged at equal pitches in the circumferential direction through the slots 2s. Thereby, the flow of magnetic flux is not completed between the magnet rotor 6 and the stator 2 or between the magnetic induction rotor 4 and the stator 2, and the magnetic induction rotor 4 and the magnet rotor 6 pass through each tooth 2 t. Since magnetic flux flows between them, it can operate effectively as a magnetic modulation function.
The stator 2 disposed between the two rotors 4 and 6 is provided with a stator fixing portion 2d on one axial side of the stator core 2a, and is fixed to the motor frame 7 via the stator fixing portion 2d. Thereby, all the teeth 2t partially coupled by the teeth coupling portion 2c can be integrally held and fixed to the motor frame 7.

Hereinafter, another embodiment (embodiment 2) according to the present invention will be described.
Note that parts, configurations, and the like described with the same names as those in the first embodiment are given the same numbers as those in the first embodiment, and descriptions that are the same as those in the first embodiment are omitted.
(Example 2)
This Example 2 is an example in which each tooth 2t of the stator core 2a is formed independently.
As shown in FIG. 10B, the stator core 2a is formed with one tooth 2t independently, and at least one end in the axial direction on the inner diameter side of the teeth 2t is connected by the connecting member 14. They are connected at equal pitches in the circumferential direction.

The connecting member 14 is provided in a ring shape by the same material (soft magnetic material) as the stator core 2a or a nonmagnetic metal such as aluminum, and as shown in FIG. It is formed to protrude in the axial direction from the height in the axial direction.
In this configuration, the connecting member 14 that connects all the teeth 2t can be used as the stator fixing portion 2d described in the first embodiment. That is, as shown in FIG. 10A, the stator 2 can be fixed to the motor frame 7 via the connecting member 14, and the coil end of the stator winding 2 b does not interfere with the motor frame 7.

(Modification)
In the first embodiment, the configuration in which the magnet rotor 6 is disposed on the outer diameter side of the stator 2 and the magnetic induction rotor 4 is disposed on the inner diameter side of the stator 2 is described. That is, the magnetic induction rotor 4 may be disposed on the outer diameter side of the stator 2 and the magnet rotor 6 may be disposed on the inner diameter side of the stator 2.
In Example 1, teeth 2t adjacent in the circumferential direction are joined to each other at the end on the inner diameter side to form the tooth coupling portion 2c. However, the teeth are not limited to the end on the inner diameter side. You may couple | bond the edge part of the outer diameter side of the teeth 2t which fit, or the center part of adjacent teeth 2t.

Furthermore, in Embodiment 2, the end portions on the inner diameter side of all the teeth 2t are connected by the ring-shaped connecting member 14, but the end portions on the outer diameter side of all the teeth 2t are connected by the ring-shaped connecting member 14. It may be configured.
Moreover, the connection member 14 can also be provided in the axial direction both sides of the stator iron core 2a. That is, the structure which connects the edge part of the inner diameter side of all the teeth 2t by the connection member 14 on both sides of an axial direction may be sufficient. However, when the connection member 14 is used as the stator fixing portion 2d, the connection member 14 disposed on one side in the axial direction (on the side opposite to the rotor disk) is used.

The magnetic induction rotor 4 according to the first embodiment has a configuration in which a segment 9 is embedded in a rotor hub 10 manufactured by aluminum die casting. The structure to do may be sufficient.
Further, the magnet rotor 6 shown in FIG. 1 is arranged in a state where the permanent magnets 11 adjacent in the circumferential direction are in contact with each other in the circumferential direction, but a soft magnetic material is arranged between the adjacent magnets. The configuration may be acceptable. This soft magnetic body can be provided integrally with the soft magnetic yoke 12.
Further, the magnet rotor 6 is formed with only one of the S pole magnetic pole and the N pole magnetic pole (for example, the N pole magnetic pole) facing the stator 2 by the permanent magnet 11, and the other magnetic pole (S pole magnetic pole). A so-called consequent pole structure in which iron (which can be provided integrally with the soft magnetic yoke 12) serving as a pseudo-pole is disposed is also possible.
In the first embodiment, an example in which the stator winding 2b is configured by a three-phase winding having a pole pair number m is described. However, the stator winding 2b is not limited to the three-phase winding, and a multi-phase winding other than the three-phase winding is adopted. You can also.

1 Magnetic Modulation Motor 2 Stator 2a Stator Core 2b Stator Winding (Multi-phase Winding)
2c Teeth coupling part 2d Stator fixing part 2s Slot 2t Teeth 4 Magnetic induction rotor (one rotor)
6 Magnet rotor (the other rotor)
9 segments (magnetic conduction path)
9a Magnetic flux outlet 11 Permanent magnet 14 Connecting member

Claims (7)

A stator (2) in which a multi-phase winding (2b) having a number of pole pairs of m is wound around a stator core (2a) having a plurality of slots (2s);
Two rotors (4, 6) arranged to be rotatable with gaps on the inner side and the outer side in the radial direction of the stator (2),
Of the two rotors (4, 6),
One rotor has a magnetic conduction path that forms a path of magnetic flux by the number of integer k, and both ends of the magnetic conduction path face the stator (2) to form a magnetic flux entrance (9a). Rotor (4),
The other rotor has a permanent magnet (11) whose number and magnetization arrangement are selected so that the number n of pole pairs is the sum or difference of m and k, and faces the stator (2). A magnetic modulation motor characterized in that it is a magnet rotor (6) in which the permanent magnets (11) are arranged so that the magnetic pole faces to be alternately have different polarities in the circumferential direction. Magnetic modulation motor (1) according to claim 1,
In the magnetic induction rotor (4), the magnetic conduction path is formed by segments (9) made of soft magnetic material, and the integer k segments (9) are magnetically separated from each other at equal intervals in the circumferential direction. A magnetic modulation motor characterized by being arranged. Magnetic modulation motor (1) according to claim 1 or 2,
A magnetic modulation motor characterized in that the magnet rotor (6) is arranged on the outer diameter side of the stator (2), and the magnetic induction rotor (4) is arranged on the inner diameter side of the stator (2). In the magnetic modulation motor (1) according to any one of claims 1 to 3,
The stator iron core (2a) has a tooth coupling part (2c) that partially couples adjacent teeth (2t) via the slot (2s), and all of the stator iron core (2a) via the tooth coupling part (2c). A magnetic modulation motor characterized in that teeth (2t) are coupled at equal pitches in the circumferential direction. In the magnetic modulation motor (1) according to any one of claims 1 to 3,
In the stator iron core (2a), adjacent teeth (2t) are formed independently through the slots (2s), and all teeth (2t) are ring-shaped connecting members (at least on one side in the axial direction). 14) A magnetic modulation motor characterized in that the magnetic modulation motors are connected at equal pitches in the circumferential direction. Magnetic modulation motor (1) according to claim 4 or 5,
The stator (2) is provided with a stator fixing portion (2d) on one axial side of the stator iron core (2a), and is fixed to the motor frame (7) via the stator fixing portion (2d).
The magnetic modulation motor according to claim 1, wherein the stator fixing portion (2d) is provided so as to protrude in an axial direction from an axial height of a coil end of the multiphase winding (2b). Magnetic modulation motor (1) according to claim 6,
The stator fixing portion (2d) is provided by extending the tooth coupling portion (2c) according to claim 4 in the axial direction, or is the connecting member (14) according to claim 5. Features a magnetic modulation motor.

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