JP2000092755A - Rotating machine of linear motor and manufacture therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress generation of an increase in iron loss or copper loss for higher operating efficiency by increasing the iron cross-sectional area of the protruding part of teeth of the side having the larger amount of magnetic flux than the other side by rotor current, and decreasing the protruding side of the iron cross-sectional area which is connected to the teeth body of a yoke than the other side. SOLUTION: This rotating machine consists of teeth 33 facing a rotor 31 and having protruding parts 33a, 33b on the right and left of a facing surface, teeth 34 having protruding parts 34a, 34b on the right and left of the facing surface, and yoke parts 35, 36 forming a magnetic path between the mutual body parts of the teeth 33, 34. Iron cross-sectional area of protruding parts 33a, 34a on the opposite side in the rotational direction which has the larger amount of magnetic flux by rotor current of the teeth 33, 34 is increased more than the one on the other side of the protruding parts 33b, 34b. The yoke parts 35, 36 are formed so that the iron cross-sectional area of the parts 35a, 36a connected to the side having the larger iron sectional area of the protruding parts of the teeth 33, 34 is set smaller than the parts 35b, 36b connected to the bodies on the other side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating electric machine of a motor or a generator in which magnetic poles are formed of teeth having a T-shaped cross section, or a stator in which a plurality of teeth are linearly arranged and a stator. The present invention relates to a method for manufacturing a linear motor including a moving element and a rotating electric machine.

[0002]

2. Description of the Related Art FIG. 17 shows a configuration of a conventional electric motor or a rotating electric machine of a generator in which a magnetic pole of a stator is formed of T-shaped teeth. In the figure, reference numeral 1 denotes a rotor, a plurality of slots 1a are provided on the outer periphery of an iron core, and T-shaped teeth 1b are formed between the slots 1a of the iron core.
A rotor winding is wound around the slot 1a. Reference numeral 2 denotes a stator, and reference numerals 3 and 4 are disposed on the outer periphery of the rotor 1 so as to face each other with a gap therebetween.
The teeth provided with a and 4b are formed symmetrically with respect to the center line 10 of the rotating electric machine. Reference numerals 5 and 6 denote yoke portions that form a magnetic path between the teeth 3 and 4, reference numerals 7 and 8 denote stator windings wound around the teeth 3 and 4, and the stator includes the teeth 3 and 4 and the yoke. Parts 5, 6 and stator windings 7, 8
It is composed of

FIG. 18 shows a magnetic flux distribution in an operating state of a rotating electric machine configured as described above in the case of a motor. In the figure, R is the rotation direction of the rotor 1, M is the stator coils 7, 8
, A magnetic flux generated in a portion of the rotor 1 when the teeth 3 and 4 are excited by passing a current in the direction shown in the drawing, A denotes a rotor 1 in which a magnetic flux due to the current of the rotor 1 and a magnetic flux M of the stator 2 are superimposed.
This is the magnetic flux of the portion, which is in the diagonally lower left direction. Ma
1, Ma2 is a magnetic flux passing through the yoke portion 5, Mb1 and Mb2 are magnetic fluxes passing through the yoke portion 6, La is a leakage magnetic flux entering the rotor 1 from the yoke portion 5, and Lb is a magnetic flux from the rotor 1 to the yoke portion 6. This is the leakage flux that comes out. Reference numerals 1 to 8 are members shown in FIG.

In the operation state of the electric motor shown in FIG. 18, the magnetic flux A of the rotor 1 is transmitted to the teeth 4 by the yoke 5,
6 and passes through a path returning to the rotor 1 after gathering at the portion of the teeth 3, but since the magnetic flux A is obliquely downward to the left, the portions of the teeth 3 and 4
The magnetic flux passing through the protruding portions 3a, 4a of the teeth 3, 4 on the side opposite to the rotation direction R of the rotor 1 of the fourth rotor 4 is increased, and magnetic saturation is likely to occur. In addition, yoke section 5
The magnetic flux passing through the yoke portion 5 has a leakage magnetic flux La toward the rotor 1 at the intermediate portion of the yoke portion 5, and the magnetic flux passing through the yoke portion 6 flows from the rotor 1 side opposite in direction to the yoke portion 5 portion. The magnetic flux density on the teeth 3 side of the yoke portion 5 and the teeth 4 side of the yoke portion 6 decreases. The loss in the iron core, that is, the iron loss, is proportional to ^Bn (n> 1) with respect to the magnetic flux density B, and the magnetic flux is concentrated. When magnetic saturation occurs, the iron loss increases in that portion. Further, when magnetic saturation occurs in the iron core, the exciting current increases, so that not only the iron loss but also the copper loss increases, and the operating efficiency of the motor decreases.

When the configuration shown in FIG. 17 is a generator, the rotor current is in the opposite direction to that in the case of the motor, and the direction of the magnetic flux in the portion of the rotor 1 is On the other hand, the magnetic flux is in the lower right direction, and the magnetic fluxes of the protruding portions 3b and 4b of the teeth 3 and 4 on the rotation direction side of the rotor 1 increase, so that magnetic saturation is likely to occur.

Further, in the configuration shown in FIG. 17, the relative positions of the protrusions 3a and 3b on both sides of the teeth 3 and the protrusions 4a and 4b on both sides of the teeth 4 with respect to the slots 1a and teeth 1b of the rotor 1 are the same. When the child 1 rotates, the projections 3a, 3b, 4a, 4b of the teeth 3, 4
There is a problem that the magnitude of the suction force or the repulsive force acting between the rotor and the rotor 1 becomes the same direction at each moment, and torque ripple pulsating with the axial torque occurs at each slot pitch.

As means for suppressing the occurrence of magnetic saturation in response to an increase in the magnetic flux of the projections 3a, 4a of the teeth 3, 4, a configuration shown in FIG. 19 is disclosed, for example, in Japanese Patent Application Laid-Open No. 6-261473. I have. FIG. 19 is a schematic diagram in which the relationship between a stator and a rotor in the case of an electric motor is linearly developed.
In the figure, reference numeral 11 denotes a rotor having magnetic poles constituted by permanent magnets, in which N poles 11n and S poles 11s are alternately arranged and rotate in the direction of arrow R in the figure. 12
Is a stator, in which a plurality of teeth 13 are arranged, and a winding 14 is wound around each tooth 13. The teeth 13 having this configuration are formed asymmetrically with respect to the center axis of the teeth 13, and are formed in an L-shape without a protruding portion on the opposite side of the rotation direction R of the rotor 11. With such a configuration, concentration of magnetic flux on the opposite side of the rotation direction of the rotor 11 of the teeth 13 is suppressed, and iron loss is reduced as compared with the case where both have protrusions.

Further, the positions of the teeth 3, 4 of the configuration of FIG. 17 corresponding to the slots 1a of the rotor 1 of the protruding portions 3a, 3b and 4a, 4b are the same under the same conditions. As means for suppressing the torque ripple, for example, a configuration shown in FIG. 20 is disclosed in Japanese Patent Application Laid-Open No. 7-298592. In this configuration, the teeth 23 at the positions of the tips of the left projecting portions 23b of the teeth 23 of the stator 22 and the left projecting portions 24a of the teeth 24,
The angle of the tip 23 of the right protruding portion 23a of the teeth 23 and the right protruding portion 24b of the teeth 24 to the center line 20 of the teeth 23 and 24 is θb, and the angle θa and the angle θb Are set so as to be shifted by an odd multiple of 1/2 of the slot pitch.
Is rotating, when the tip of the protrusion 23a of the teeth 23 is at the position of the teeth 21b of the rotor 21, the tip of the protrusion 23b is at the position of the slot 21a of the rotor 21, and the protrusion of the teeth 24 The tip of the portion 24a is located at the position of the slot 21a of the rotor 21, the tip of the projection 24b is located at the position of the teeth 21b of the rotor 21, and at this moment, the torque given to the rotor 21 by the tip of each projection is , the torque of the rotational direction +, the direction of rotation torque in the opposite direction - when to, tip + T ₁ of the protrusion 23a, the tip of the projecting portion 23b is -T _2, the tip of the protruding portion 24a is + T
_3, the tip of the projecting portion 24b is -T _4, the torque T ₁ of the shape condition of the protrusion and the same protrusion 23a protruding portion 24b
And T ₄ , or the torques T ₂ and T _{3 of the} protruding portion 23b and the protruding portion 24a are opposite to each other, and work so as to cancel each other out, so that the rotor 21 does not pulsate. Further, as the pitch advances by ２ pitch, the direction of the torque applied to the rotor by the tip of each protrusion becomes the opposite direction, but since each torque acts so as to cancel out between the protrusions whose tips are in the same condition. The torque ripple of the rotor is suppressed.

[0009]

As described above, the conventional stator 2 has T-shaped teeth 3 whose magnetic poles are bilaterally symmetric.
In the rotating electric machine of the electric motor or the generator formed by 4, there is a problem that the current flowing through the rotor 1 increases the magnetic flux of one of the protruding portions of the teeth 3 and 4, thereby easily causing magnetic saturation. On the other hand, in the configuration disclosed in Japanese Patent Application Laid-Open No. 6-261473, the teeth 13 are formed in an L-shape with no protrusion on the side where the magnetic flux increases, so that magnetic saturation does not occur. , The slot spacing between the teeth 13 is widened, and torque ripple and electromagnetic vibration are likely to occur.
1 has a problem that the exciting current increases due to the increase in the gap length between them and the copper loss increases.

In addition, the rotors are set at both angles .theta.a and .theta.b with respect to the center line 20 of the rotating electric machine at the positions of the tips of the protrusions on both sides of the teeth 23 and 24 of the stator 22 disclosed in Japanese Patent Application Laid-Open No. 7-298592. In the configuration in which the torque ripple is suppressed by giving an odd multiple of ス ロ ッ ト of the slot pitch of the slot 21a of the slot 21, no consideration is given to an increase in the magnetic flux of one of the protrusions.
There is a problem that magnetic saturation occurs in the protrusion on the side where the magnetic flux due to one rotor current is superimposed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is intended to reduce the magnetic saturation in a rotating electric machine of a motor or a generator, or a linear motor, in which a magnetic pole of a stator is formed of teeth. To provide a rotating electric machine or a linear motor of an electric motor or a generator whose object is to avoid and reduce iron loss and copper loss, to improve energy conversion efficiency, and to further suppress torque ripple and electromagnetic vibration, and It is an object of the present invention to provide a method for manufacturing a rotating electric machine of a motor or a generator in which each member of an iron core of the rotating electric machine of a motor or a generator is arranged to improve the yield.

[0012]

According to a first aspect of the present invention, there is provided a rotating electric machine having a structure in which a stator has teeth each of which has a protruding portion formed on both sides of a facing surface of the rotor. The cross-sectional area of the iron core of the protruding portion of the teeth is larger on the side where the magnetic flux is increased by the rotor current than on the other side, and the cross-sectional area of the core of the yoke portion connected to the body of the teeth has a larger cross-sectional area of the core. The protruding portion side is smaller than the other side.

According to a second aspect of the present invention, there is provided a rotating electric machine in which a body of a tooth arranged opposite to an outer periphery of the rotor according to the first aspect is rotated by a rotor current with respect to a center line of the rotating electric machine. The yoke is arranged so as to be biased toward the side where the magnetic flux is increased, and the iron core cross-sectional area of the portion of the yoke that is connected to the side of the teeth body is smaller on the side where the teeth body is biased than on the other side.

According to a third aspect of the present invention, there is provided a rotating electric machine in which the cross-sectional area of the iron core of the tooth protruding portion disposed opposite to the outer peripheral surface of the rotor according to the first aspect has a large magnetic flux due to the rotor current. Is larger than the other side, the upper surface and the lower surface of the left and right yoke parts are the same plane, and the core cross-sectional area of the part of the yoke part connected to the teeth body is a protruding part with a larger iron core cross-sectional area The side is made smaller than the part connected to the other side of the teeth body, and the inner surface of the part of the yoke connected to both sides of the teeth body is formed in the same inclined plane.

In the rotating electric machine according to a fourth aspect of the present invention, the iron core cross-sectional area of the teeth protruding portion disposed opposite to the outer peripheral surface of the rotor according to the first aspect has a large magnetic flux due to the rotor current. Side is larger than the other side, the upper surface and the lower surface of the left and right yoke parts are respectively the same plane, and the core cross-sectional area of the part connected to the teeth body of the yoke part is The cross-sectional area of the core connected to the other side is smaller than the cross-sectional area of the core, and the inner surface of the part connected to both sides of the teeth body of the yoke is formed in the same inclined plane, and the teeth body is the teeth body of the yoke. Are arranged to be inclined in a direction perpendicular to the inclined inner surface of the portion connected to.

According to a fifth aspect of the present invention, there is provided a rotating electric machine, wherein a yoke portion forming a magnetic path between the body portions of the teeth according to the first to fourth aspects, The core that is symmetrical with respect to the center line and that has a larger core cross-sectional area of the teeth and is connected to the body on the protruding part with a smaller cross-sectional area of the core of the adjacent teeth. The cross-sectional area is increased so that the cross-sectional area of the core of the yoke gradually decreases from the larger side to the smaller side.

According to a sixth aspect of the present invention, there is provided a rotating electric machine having triangular depressions provided above and below a center line of the rotating electric machine of the stator according to the first to fourth aspects, and wound around the body of the teeth. In addition to the windings, a compensation winding is added between each tooth side on the side opposite to the side where the magnetic flux increases due to the rotor current of the teeth protrusion and each of the upper and lower triangular recesses It is.

According to a seventh aspect of the present invention, there is provided a rotating electric machine, wherein the tip of the protruding portion on the side where the magnetic flux increases due to the rotor current of the protruding portion provided on both sides of the teeth of the first to fourth aspects is provided. The angle of the line connecting the center of the rotating electric machine to the center line of the rotating electric machine and the angle of the line connecting the tip of the opposite protrusion to the center of the rotating electric machine to the center line of the rotating electric machine are different angles. Is 1 of the rotor slot pitch
/ 2 is an odd multiple of / 2.

According to an eighth aspect of the present invention, there is provided a rotating electric machine, wherein a core of a tooth protruding portion which is opposed to an inner surface of a stator having a magnetic pole directed to the inner periphery and has protruding portions on both sides of the opposing surface is provided. The area, the side where the magnetic flux due to the rotor current becomes larger, is made larger than the other side, and the core cross-sectional area of the yoke section that forms the magnetic path between the body of the rotor teeth is increased The part connected to the body on the protruding part side is smaller than the part connected to the teeth body on the other side.

According to a ninth aspect of the present invention, there is provided a linear motor comprising a movable member having magnetic poles arranged in a straight line, a stator facing the movable member, and having teeth on both sides of the facing surface.
The cross-sectional area of the iron core of the teeth having protrusions formed on both sides in the movement direction of the opposing surface of the stator facing the mover is larger on the opposite side of the movement direction than on the other side, and the teeth of the stator are The cross-sectional area of the iron core of the yoke that forms the magnetic path between the trunks is such that a portion connected to the trunk on the protruding portion side where the iron core cross-sectional area of the teeth is increased is smaller than the other side.

According to a tenth aspect of the present invention, there is provided a method of manufacturing a rotating electric machine, wherein the rotor core has an arc shape which can be disposed with one end thereof facing the outer peripheral surface of the rotor, and both sides of the arc-shaped one end. A protruding portion in which one width is wider than the other width is formed, and on both sides of the other end, a portion that connects to a yoke portion that forms a magnetic path between the teeth is provided, and the width of the connecting portion is the width. A pair of teeth iron cores with the width of the protruding part side narrower than the width of the opposite side, and a pair of yoke cores whose ends match the shape of the part connected to the yoke part of the teeth A set of each core member is constituted, a rotor core at the center, a pair of teeth cores on both sides thereof, and a portion where the width of the connecting portion is reduced is the same direction. And the width of the teeth core is reduced. Therefore a method for producing the core members punched in the state in which the pair of yoke portions core inside portion.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 The first embodiment is configured to avoid local magnetic saturation of teeth in a motor of a rotary electric machine having a T-shaped magnetic pole tooth in a stator. FIG. 1 shows a configuration diagram of the first embodiment. In the drawing, reference numeral 30 denotes a motor center line, 31 denotes a rotor, and a plurality of slots 31a for winding a plurality of rotor windings are provided on the outer periphery, and a T-shaped tooth 31b is provided between the slots 31a.
Are formed, and rotate in the direction of arrow R. Reference numeral 32 denotes a stator, which faces the rotor 31 and has teeth 33 having projections 33a and 33b on the left and right sides of the facing surface, teeth 34 having projections 34a and 34b on the left and right sides of the facing surface, and a body of the teeth 33 and 34. Yoke portions 35 and 36 forming a magnetic path between the portions, and the protruding portion 3 on the opposite side in the rotation direction in which the magnetic flux due to the rotor current of the teeth 33 and 34 increases.
The cross-sectional area of the iron cores of 3a and 34a is
4b, and the yoke portions 35 and 36 are teeth 3
The portions 35a and 36a of the protruding portions 3 and 34 that are connected to the side where the iron core cross-sectional area is increased are formed to be smaller than the portions 35b and 36b that are connected to the body portions on the other side. 3
Reference numerals 7 and 38 denote stator windings wound around the teeth 33 and 34, respectively.

As described with reference to FIG. 18 in the description of the related art, the direction of the magnetic flux during operation of the motor having the above-described configuration is such that the direction of the magnetic flux in the rotor portion due to the rotor current is obliquely downward and leftward in the drawing. In the magnetic flux distribution of the upper teeth 33, the portion of the protrusion 33a where the magnetic flux due to the rotor current is increased increases, and the portion of the protrusion 33b on the other side decreases. Similarly, in the magnetic flux distribution of the lower teeth 34, the portion of the protrusion 34a on the opposite side to the rotor rotation direction where the magnetic flux due to the rotor current increases increases, and the protrusion 34b on the other side decreases.
In addition, in the yoke portion 35, there is a leakage magnetic flux toward the rotor at the intermediate portion, and the magnetic flux of the portion 35a connected to the protruding portion side having a larger iron core cross-sectional area of the teeth 33 is small. The magnetic flux in the portion 35b connected to the portion increases. In the yoke portion 36, the leakage magnetic flux from the rotor 31 is added at the intermediate portion, and the magnetic flux of the portion 36a connected to the side portion of the teeth 34 on the side of the protruding portion 34a having a large iron core cross-sectional area is small,
The magnetic flux in the portion 36b connected to the body on the opposite side of the teeth 33 increases.

The stator 32 is formed corresponding to the magnetic flux distribution in such an operating state, and the winding space of the stator windings 37, 38 of the teeth body is formed by the teeth of the teeth having a large sectional area. By reducing the iron core cross-sectional area of the connecting portions 35a and 36a of the yoke portions connected to the protruding portions 33a and 34a, the left and right balance can be obtained.

The yoke portions 35 and 36 have a leakage magnetic flux between the rotor 31 and the intermediate portion, and a portion 35b which is connected to the body of the teeth on the rotor rotation direction side as a core cross-sectional area corresponding to the magnetic flux. If the cross-sectional area of the iron core is gradually reduced from the portion 36b toward the portions 35a and 36a connected to the opposite side in the direction of rotation of the rotor, useless portions of the iron core can be reduced.

When the stator 32 is configured as described above, there is no portion where the magnetic saturation of the stator 32 occurs in the operating state of the electric motor, the increase in iron loss is suppressed, and the teeth 3
The winding space for the stator windings 37, 38 wound around the body portions 3, 34 can also be ensured, so that the motor does not create wasted space, local magnetic saturation of the iron core is suppressed, and the motor Increases efficiency.

Embodiment 2 FIG. FIG. 2 shows the configuration of the second embodiment.
Shown in Embodiment 2 is a configuration in the case of a motor that can suppress local magnetic saturation of a rotating electric machine using a permanent magnet for the rotor. 1/4 of the case where the number of magnetic poles is 12
2 is shown in FIG. In the figure, 40 is a motor center line, 41 is a rotor, and a rotor magnetic pole 41a is formed of a permanent magnet and rotates in the direction of arrow R. Reference numeral 42 denotes a stator.
A plurality of teeth 43 provided with a, 43b and teeth 44 having the same configuration and being excited in the opposite direction are alternately arranged, and the roots of the teeth 43, 44 are connected to form a magnetic path between the teeth 43, 44. They are connected by iron parts 45 and 46. 47 and 48 are stator windings wound around the teeth 43 and 44, respectively.

The cross-sectional area of the iron cores of the projections 43a, 44a on which the magnetic flux due to the rotor current of the teeth 43, 44 is superimposed is made larger than that of the projections 43b, 44b on the other side.
Reference numerals 5 and 46 denote portions 45b and 46b of the protruding portions on the side of the teeth 43 and 44, which have enlarged cross-sectional areas of the iron cores. It is formed smaller than the iron core cross-sectional area.

In the operation state of the electric motor having this configuration,
As in the case of the first embodiment, the magnetic flux in the teeth 43 has a distribution that increases in the protruding portion 43a on the opposite side in the rotor rotation direction, and the yoke portions 45 and 46
Is small, and there is little leakage flux from the yoke portions 45 and 46 to the rotor 41 side.
The magnetic fluxes of the portions 45a and 46a connected to the trunk portions of the teeth 43 of the teeth 5 and 46 on the opposite side of the rotor rotation direction are smaller than the magnetic fluxes of the portions 45b and 46b connected to the trunk portions on the other side. The stator 42 shown in FIG. 2 is configured corresponding to such a magnetic flux distribution.

With this configuration, local magnetic saturation of the stator of the motor is suppressed, and the motor efficiency is increased.

Embodiment 3 FIG. 3 shows the configuration of the third embodiment.
Shown in Embodiment 3 is a configuration in the case of a generator of a rotating electrical machine having the same configuration as Embodiment 1. In the figure, 50
Is a generator center line, 51 is a rotor, and a number of slots 51a for winding a plurality of rotor windings are provided on the outer periphery,
T-shaped teeth 51b are formed between the slots 51a, and rotate in the direction of arrow R. Reference numeral 52 denotes a stator, which faces the rotor 51 and has protrusions 53
a, 53b, teeth 54 having projections 54a, 54b on the left and right sides of the facing surface, and yoke portions 55, 56 forming a magnetic path between the trunks of the teeth 53, 54.
And protrusions 53b and 54b on the rotor rotation direction side where the magnetic flux due to the rotor current of the teeth 53 and 54 increase.
The cross-sectional area of the iron core is larger than the cross-sectional area of the core of the other protruding portions 53a, 34a.
The portions 55b and 56b of the projecting portions 53b and 56b which are connected to the protruding portions 53b and 54b having a larger iron core cross-sectional area are formed smaller than the portions 55a and 56a which are connected to the other side. 5
Reference numerals 7 and 58 denote stator windings wound around the teeth 53 and 54, respectively.

The rotor current of the generator is in the opposite direction as in the case of the electric motor, and the magnetic flux in the rotor portion is in the opposite diagonally lower right direction with respect to the center line in the case of FIG. Regarding the magnetic flux distribution of the teeth 53, the magnetic flux on the protrusion 53b side on the rotor rotation direction side increases, and the magnetic flux on the protrusion 53a on the opposite side in the rotor rotation direction decreases. Similarly, the magnetic flux distribution of the lower teeth 54 is similar to the protrusion 54 on the rotor rotation direction side.
The magnetic flux on the b side increases, and the magnetic flux on the protruding portion 54a on the opposite side in the rotor rotation direction decreases. In addition, the yoke portion 55 has a leakage flux toward the rotor at an intermediate portion, and the teeth 5
4, the magnetic flux of the portion 55b connected to the body portion on the rotor rotation direction side decreases, and the magnetic flux of the portion 55a connected to the body portion of the other tooth 53 on the opposite side in the rotor rotation direction increases.
In the yoke section 56, the teeth 5
4 and a portion 56a connected to the side opposite to the rotor rotation direction
And the magnetic flux of the portion 56b connected to the body of the teeth 53 on the rotor rotation side is reduced.

The stator 52 is formed corresponding to the magnetic flux distribution in such an operating state, and the winding space of the stator windings 57, 58 of the teeth body has teeth projections having a large sectional area. The left and right balance can be achieved by reducing the iron core cross-sectional area of the portions 55b and 56b connected to the body of the yoke portion connected to the portions 53b and 54b.

When the stator 52 is configured in this manner, the occurrence of local magnetic saturation in the stator 52 in the operating state of the generator is avoided, the increase in iron loss is suppressed, and the body of the teeth 53 and 54 is The winding space of the wound stator windings is not so reduced, so that the generator does not make useless space, local magnetic saturation of the iron core is suppressed, and the generator efficiency increases.

Embodiment 4 FIG. FIG. 4 shows the configuration of the fourth embodiment.
Shown in Embodiment 4 is a configuration in the case of an electric motor of a rotating electric machine in which the body of the teeth of the stator is biased to the opposite side in the rotor rotation direction. In the figure, 31 is the same rotor as in FIG. 1 and rotates in the direction of arrow R. 60 is a motor center line, 62 is a stator, faces the rotor 31, and has teeth 63 having protruding portions 63a, 63b on the left and right sides of the facing surface.
Teeth 64 having protrusions 64a, 64b on the left and right sides of the opposing surface, and yoke portions 65, 66 forming a magnetic path between the trunks of the teeth 63, 64,
The yoke portion is biased to the opposite side of the rotor rotation direction where the magnetic flux increases, and the yoke portions 65 and 66 are the other core cross-sectional areas of the portions 65a and 66a that are connected to the side where the torso portions of the teeth 63 and 64 are biased. The portions 65b and 66b connected to the sides are formed smaller than the iron core cross-sectional area. Reference numerals 67 and 68 denote stator windings wound around the teeth 63 and 64, respectively.

In this configuration, the teeth 6 of the stator 62
Since the body portions 3 and 64 are biased to the opposite side in the rotor rotation direction, the protrusions 63a and 64a of the teeth 63 and 64 on the opposite side in the rotor rotation direction in which the magnetic flux increases due to the rotor current. Magnetic saturation of the teeth 63,
Although the winding space of the winding is reduced by the amount by which the body of the coil 64 is biased, the winding of the winding is reduced by reducing the cross-sectional area of the iron core of the portions 65a and 66a of the yoke portions 65 and 66 that are connected to the teeth body. Time spaces do not become unbalanced.

By configuring the stator 62 in this manner, local magnetic saturation of the stator 62 does not occur in the operating state of the electric motor, thereby suppressing an increase in iron loss. The winding space for the wound stator winding is also ensured, so that there is no useless space in the motor, local magnetic saturation of the iron core is suppressed, and the motor efficiency is increased.

Embodiment 5 FIG. 5 shows the configuration of the fifth embodiment.
Shown in Embodiment 5 is a configuration in the case of a generator for a rotating electric machine having the same configuration as that of Embodiment 4. Reference numeral 51 denotes the same rotor as that shown in FIG. 70 is a generator center line, 72 is a stator, facing the rotor 51,
Teeth 73 having protruding portions 73a, 73b on the left and right sides of the opposing surface, teeth 74 having protruding portions 74a, 74b on the left and right sides of the opposing surface, and yoke portions 75, 76 forming a magnetic path between the body portions of the teeth 73, 74. Composed of teeth 73,
The body portion of 74 is biased toward the rotor rotation direction where the magnetic flux is increased, and the yoke portions 75 and 76 connect the core cross-sectional areas of the portions 75b and 76b connected to the side where the body portions of the teeth 73 and 74 are biased to the other side. Are formed smaller than the iron core cross-sectional area of the portions 75a and 76a connected to. 77, 78 are windings wound around the teeth 73, 74.

As described above, the teeth 73 and 7 of the stator 72 are
By biasing the body of No. 4 to the opposite side of the rotor rotation direction, the teeth protrusion 73 b on the rotor rotation direction side where the magnetic flux due to the rotor current in the opposite direction to that of the fourth embodiment increases.
The winding space of the stator winding corresponding to the magnetic saturation of the teeth 74b and the body portions of the teeth 73 and 74 being deflected is equal to the portions 75b and 76b connected to the teeth body portions of the yoke portions 75 and 76.
The winding space of the winding becomes the same size on the left and right by reducing the iron core cross-sectional area.

By configuring the stator 72 in this manner, local magnetic saturation of the stator 72 in the operating state of the generator is eliminated, an increase in iron loss is suppressed, and the teeth 7
A space for winding the stator windings wound around the trunks of the 3, 74 can also be ensured, and there is no wasted space in the generator, local magnetic saturation of the iron core is suppressed, and generator efficiency is increased.

Embodiment 6 FIG. FIG. 6 shows the configuration of the sixth embodiment.
Shown in In the sixth embodiment, the magnetic saturation of the teeth and the yoke of the stator is avoided, and the shape of the winding of the stator winding surrounded by the teeth and the yoke is easily changed. This is a configuration in the case of an electric motor of a rotating electric machine having a shape as follows. In the figure, 31 is the same rotor as in FIG. 1 and rotates in the direction of arrow R. Reference numeral 80 denotes a motor center line, and reference numeral 82 denotes a stator, which faces the rotor 31 and has protrusions 83 on the left and right sides of the facing surface.
a, 83b having teeth 83a, 83b, teeth 84 having protrusions 84a, 84b on the left and right sides of the facing surface, and a yoke portion 85 forming a magnetic path between the trunks of the teeth 83, 84;
The protrusions 83a and 84a on the opposite side of the teeth 83 and 84 in the rotor rotation direction have larger iron core cross-sectional areas than the other protrusions 83b and 84b.
The upper surface and the lower surface of 5, 86 are respectively the same plane, and the cross-sectional areas of the portions 85a, 86a connected to the trunks on the protruding portion side where the iron core cross-sectional areas of the teeth 83, 84 of the yoke portions 85, 86 are increased are reduced. The corner P point and the portions 85a and 86b or 85b in which the inclined planes including the inner corner Q point of the portions 85b and 86b connected to the other body portion are connected to the body portions of the teeth 83 and 84 of the yoke portions 85 and 86. 86a. 87, 88 are teeth 8
3 and 84 are stator windings.

According to this structure, the first and fourth embodiments are used.
Similarly, the winding space for the winding wound around the body of the teeth 83, 84 is secured, and the ends 85a and 86b or 85b of the yoke portions 85, 86 of the winding space for the stator winding are secured.
And 86a are formed on the same plane so that the wires of the winding can be aligned and wound in parallel, and an effect of winding a stator winding having a good space factor can be obtained. Similarly to 4, the wasteful space of the motor is eliminated, local magnetic saturation of the iron core is suppressed, and the motor efficiency is increased.

Embodiment 7 FIG. FIG. 7 shows the configuration of the seventh embodiment.
Shown in In the seventh embodiment, in the case of the generator having the same configuration as that of the sixth embodiment, magnetic saturation of the teeth and the yoke portion of the stator is avoided, and the stator winding wound around the teeth and the yoke portion is used. The shape of the portion is configured to facilitate winding work. In the figure, reference numeral 51 denotes the same rotor as that of FIG. 90 is a generator center line, 92 is a stator, which faces the rotor 51, teeth 93 having protruding portions 93 a, 93 b on the left and right sides of the facing surface,
Teeth 9 having protrusions 94a, 94b on the left and right sides of the facing surface
4, and yoke portions 95, 96 forming a magnetic path between the body portions of the teeth 93, 94.
4, the iron core cross-sectional area of the protruding portions 93b, 94b on the rotor rotation direction side is increased, and the upper and lower surfaces of the left and right yoke portions 95, 96 are flush with each other, and the teeth 93, 94 of the yoke portions 95, 96 are provided. The cross-sectional areas of the portions 95b and 96b connected to the body portion on the protruding portion side where the iron core cross-sectional area is increased are smaller than the portions 95a and 96a connected to the teeth body portion on the other side,
A plane including the inner corner P point on the side to be reduced and the inner corner Q point of the parts 95a and 96a connected to the teeth body on the other side in the rotor rotation direction is a part connected to each teeth body of the yoke parts 95 and 96. 95a and 96b or 95b and 96a. 97 and 98 are teeth 9
3 and 94 are stator windings.

With this configuration, there is no magnetically saturated portion corresponding to the rotor current in the case of the generator, and a space for winding the stator winding wound around the body of the teeth 93 and 94 is secured. And a portion 95 of the winding space of the stator windings 97 and 98 which is connected to the teeth body of the yoke portions 95 and 96.
a and 96b or 95b and 96a are flush with each other so that the wires of the stator windings 97 and 98 can be aligned and wound in parallel, and the stator windings 97 and 98 have a good space factor. Can be wound, as in the third and fifth embodiments, eliminating unnecessary space in the generator, suppressing local magnetic saturation of the iron core, and increasing generator efficiency.

Embodiment 8 FIG. FIG. 8 shows the configuration of the eighth embodiment.
Shown in In the eighth embodiment, magnetic saturation of the teeth and the yoke of the stator core is avoided, and the shape of the stator winding winding space surrounded by the teeth and the yoke makes the winding operation easier. The space factor of the windings is
This is a configuration in the case of an electric motor of a rotating electric machine that has a better shape than the case of the above. In the figure, 31 is the same rotor as in FIG. 1 and rotates in the direction of arrow R. 100 is a motor center line, 102 is a stator, which faces the rotor 51 and has teeth 103 having protruding portions 103a and 103b on the left and right sides of the facing surface, and protruding portions 104a and 104 on the left and right sides of the facing surface.
4b having teeth 104 and teeth 103, 1
04, yoke portions 105, 10 forming magnetic paths between the trunk portions
6, the cross-sectional areas of the cores of the protruding portions 103a, 104a on the opposite side of the teeth 103, 104 in the rotor rotation direction are increased, and the upper and lower ends of both the yoke portions 105, 106 are coplanar. , 104, the cross-sectional area of the cores 105a, 106a connected to the protruding portions 103a, 104a on the side of the protruding portions 103a, 104a is made smaller than the core cross-sectional areas 105b, 106b connected to the teeth body on the other side. The inclined planes including the inner corner P points of the portions 105a and 106a connected to the reduced teeth body and the inner corners Q of the portions 105b and 106b connected to the other side of the teeth body are the yoke portions 105 and 106, respectively. Parts 105a and 106b or 105b and 106a that are connected to the teeth body are formed to be the inner surfaces of the teeth 103 and 106a. Body of Isu 104 includes a portion 105a and 106b or 106a connected to the body portion of the teeth 103, 104 of the yoke portion 105 and 106 has an inclined surface 1
05b is formed in a direction perpendicular to the inclined inner surface. 107 and 108 are stator windings wound around the teeth 103 and 104, respectively.

When the stator 102 is configured as described above, the stator winding 1 wound around the body of the teeth 103 and 104
The winding space of 07, 108
4 body side and teeth 10 of yoke sections 105 and 106
The inner surfaces of the portions of the stator windings 3 and 104 connected to the trunk are formed in a right angle state, and the wires of the stator windings 107 and 108 can be wound in a parallel state in the shortest time, and the stator winding having the best space factor can be obtained. Since the wires 107 and 108 can be wound, as in Embodiment 6, there is no useless space for the electric motor, and local magnetic saturation of the iron core is suppressed.
The motor efficiency increases.

Embodiment 9 FIG. FIG. 9 shows the configuration of the ninth embodiment.
Shown in The ninth embodiment is a configuration in the case of a generator of a rotating electric machine having the same configuration as that of the eighth embodiment, and magnetic saturation of the teeth and the yoke of the stator core is avoided, and the generator is surrounded by the teeth and the yoke. The winding shape of the wound stator winding is configured so that the winding work becomes easy, and the space factor of the winding is further improved as compared with the case of the seventh embodiment. In the figure, 51 is the same rotor as in FIG.
It rotates in the direction of arrow R. 110 is the generator center line, 11
Reference numeral 2 denotes a stator, which faces the rotor 51 and has teeth 113 having protrusions 113a and 113b on the left and right sides of the facing surface.
The teeth 114 have protrusions 114a and 114b on the left and right sides of the facing surface, and the yoke portions 115 and 116 form a magnetic path between the body portions of the teeth 113 and 114. Projection 11 of
3b and 114b, the cross-sectional area of the core is increased.
The upper end and the lower end of both 5 and 116 are flush with each other, and portions 115b, 1
A portion 115a connecting the cross-sectional area of 16b to the trunk on the other side,
The portion 115b, 11b, which is smaller than 116a and which is connected to the teeth body having a smaller cross-sectional area, is connected to the inner corner P point on the side of the teeth 115b and 116b and the portion 115a, 11 which is connected to the teeth body on the other side
The inclined plane including the inner corner Q point of 6a is a yoke 11
5 and 116, portions 115a and 116b and 115b and 116 that are connected to the body of teeth 113 and 114, respectively.
The body of the teeth 113 and the teeth 114 is formed to be the inner surface of
Portion 11 that connects to the trunk of 16 teeth 113 and 114
It is formed at right angles to the inclined inner surfaces of 5a and 116b or 116a and 115b. Reference numerals 117 and 118 denote stator windings wound around the teeth 113 and 114, respectively.

When the stator 112 is configured as described above, the stator winding 1 wound around the body of the teeth 113 and 114 is formed.
The winding space of 17, 118 is teeth 113, 11
4 and the teeth 11 of the yoke portions 115 and 116
The inner surfaces of the portions of the stator windings 3 and 114 that are connected to the body are formed in a right angle state, and the wires of the stator windings 117 and 118 can be wound in a parallel state in the shortest time, and the stator winding with the best space factor can be obtained. Since the wires 117 and 118 can be wound, as in Embodiment 7, there is no useless space in the generator, and local magnetic saturation of the iron core is suppressed.
The motor efficiency increases.

Embodiment 10 FIG. The tenth embodiment relates to the formation of the width of the yoke that forms a magnetic path between the body portions of the teeth in the first, third to ninth embodiments.
The yoke portion that forms a magnetic path between the body portions of the teeth has leakage magnetic flux between the rotor and the middle portion of the yoke, and the iron core cross-sectional area corresponding to the magnetic flux may be sufficient. The iron core cross-sectional area is determined according to the magnetic flux at the link between the teeth and the teeth where the magnetic flux is reduced, and the middle is gradually reduced from the larger core cross-section to the smaller core. Parts are eliminated, and unnecessary weight increase can be eliminated.

Embodiment 11 FIG. FIG. 10 shows the configuration of the eleventh embodiment. The eleventh embodiment has a configuration in which the cross-sectional area of the core of one of the teeth of the stator core is increased as shown in the first, third, fifth, and seventh embodiments of the configuration of the electric motor. This is an embodiment of a configuration in which a compensating winding is wound when one of the mounting spaces of the stator coil becomes small. In the figure, 31 is the same rotor as in FIG. 1 and rotates in the direction of arrow R. Reference numeral 120 denotes an electric motor center line, 122 denotes a stator, and faces the rotor 31 and has teeth 123 having protrusions 123a and 123b on the left and right sides of the facing surface, teeth 124 having protrusions 124a and 124b on the left and right sides of the facing surface, and The yoke portions 125 and 126 form a magnetic path between the body portions of the teeth 123 and 124, and the cross-sectional areas of the cores of the protruding portions 123a and 124a on the opposite side in the rotor rotation direction of the teeth 123 and 124 are the other side. A portion 125 that is larger than the iron core cross-sectional area of the protruding portions 123b and 124b and that is connected to the teeth body on the side where the iron core cross-sectional area of the teeth protruding portion of the yoke portions 125 and 126 is increased.
a, 126a are smaller than the iron core cross-sectional areas of the portions 125b, 126b connected to the teeth body on the other side. 127 is a stator winding wound around the teeth 123, 127 a is a winding part of the stator winding 127 on the yoke part 126 side and a triangular recessed portion 1 on the end face of the teeth 123.
A compensation winding wound around a portion 23d, a stator winding 128 wound around a tooth 124, and a yoke portion 128a
The compensation winding is wound between the winding portion of the stator winding 128 on the fifth side and the triangular concave portion 124d on the end face of the teeth 123.

In the configuration shown in FIG. 10, the teeth 123 and 124 have the protrusions 12 on the opposite side of the rotor rotation direction.
When the iron core cross-sectional area of each of 3a and 124a is increased, teeth 123 on the opposite side of the rotor rotation direction are used.
When the winding space of the stator winding surrounded by the portion 125a connected to the teeth of the yoke portion 125 becomes smaller,
A compensation winding is wound between the winding space of the stator winding on the rotor rotation side of the teeth 123 and the triangular recess 123d on the end face of the teeth 123, and the stator on the rotor rotation direction side of the teeth 124. The necessary magnetizing force is obtained by winding the compensating winding 128a between the winding space of the winding and the triangular recessed portion 124d on the end face of the tooth 124 to obtain the required number of turns, thereby reducing the motor efficiency. Can be prevented.

Embodiment 12 FIG. FIG. 11 shows the configuration of the twelfth embodiment. In the twelfth embodiment, as shown in the above-described third, fifth, seventh, and ninth embodiments of the configuration of the generator, the core cross-sectional area of one protruding portion of the teeth of the stator core is increased. This is an embodiment of a configuration in which a compensating winding is wound when one of the mounting spaces of the stator coil becomes smaller. In the figure, reference numeral 51 denotes the same rotor as that of FIG. 130 is a generator center line, 132 is a stator, faces the rotor 51 and has teeth 133 having projections 133a and 133b on the left and right sides of the facing surface, teeth 134 having projections 134a and 134b on the left and right sides of the facing surface. And the yoke portions 135 and 136 forming a magnetic path between the body portions of the teeth 133 and 134, and the cross-sectional area of the iron core of the protruding portions 133b and 134b on the rotor rotation direction side of the teeth 133 and 134 is the other side. Portions 135b and 136 that are larger than the iron core cross-sectional areas of the protrusions 133a and 134a and that are connected to the teeth body on the side where the iron core cross-sectional areas of the teeth protrusions of the yoke portions 135 and 136 are increased.
The part 1 connecting the iron core cross-sectional area to the teeth body on the other side
35a and 126a are smaller than the core cross-sectional area.
137 is a stator winding wound around the teeth 133, 13
7a is a compensating winding wound around the winding portion of the stator winding 137 on the yoke portion 136 side and a triangular recess 133d on the end surface of the tooth 133, and 138 is a fixed winding wound on the tooth 134. The child winding 138a is a compensation winding wound between the winding part of the stator winding 138 on the yoke part 135 side and the triangular concave part 134d on the end face of the tooth 133.

In the configuration of FIG. 11, the teeth 133 and the teeth 134 have protrusions 133b on the rotor rotation direction side,
And 134b are increased in core cross-sectional area, and the winding space of the stator winding surrounded by a portion 135a connected to the teeth 133 on the rotor rotation direction side and the teeth body of the yoke portion 135 is reduced. Between the winding space of the stator winding on the rotor rotation side of the teeth 133 and the triangular recess 133d on the end face of the teeth 133, the compensation winding 137a and the stator on the rotor rotation side of the teeth 134. By winding the compensating winding 137a between the winding space of the winding and the triangular recessed portion 134d on the end face of the tooth 134 to obtain the required number of turns, the required magnetizing force is obtained, A decrease in operating efficiency can be prevented.

Embodiment 13 FIG. FIG. 12 shows the configuration of the thirteenth embodiment. In the thirteenth embodiment, the torque ripple is suppressed in addition to the configuration in which the teeth of the stator core of the electric motor and the cross-sectional area of the portion where magnetic saturation occurs in the yoke portion are increased. In the figure, 31 is the same rotor as in FIG. 1 and rotates in the direction of arrow R. 140 is a motor center line, 142 is a stator, faces the rotor 31 and has teeth 143 having protrusions 143a and 143b on the left and right sides of the facing surface, teeth 144 having protrusions 144a and 144b on the left and right sides of the facing surface, and The yoke portions 145 and 146 that form a magnetic path between the body portions of the teeth 143 and 144 are formed. The cross-sectional areas of the iron cores of the protruding portions 143a and 144a on the opposite side in the rotor rotation direction of the teeth 143 and 144 are set to be smaller than the other side. also large, protruding portions 143a, 144a is the position of the angle theta ₁ with respect to the line of the motor center line 140 connecting the center of the tip and the rotating electrical machine, the rotor rotational direction of 143 and 144 of the tooth protruding portion 143b, The line connecting the tip of 144b and the center of the rotating electric machine is located at an angle θ ₂ with respect to the motor center line 140, and the difference between the angle θ ₁ and the angle θ ₂ is the rotor 3
A portion 145a, 146a that is set to be an odd multiple of ス ロ ッ ト of the slot pitch of one slot 31a and is connected to the body of the teeth 143, 144 of the yoke portions 145, 146
The cross-sectional area of the iron core is the part 1 connected to the tooth body on the opposite side.
45b and 146b are smaller than the core cross-sectional area.
147, 148 are stator windings wound around the teeth 143, 144.

In the state where the motor is operating, when the tip of the protrusion 143a of the tooth 143 is located at the position of the slot 31a of the rotor 31, the tip of the opposite protrusion 143b contacts the tooth 31b of the rotor 31. The tip of each of the left and right protruding portions 143a and 143b is rotated in such a manner that suction force is generated on one side and repulsive force is generated on the other side in the rotation direction of the rotor, so that they act to cancel each other. It works to control the child's torque ripple.

With this configuration, in addition to eliminating unnecessary space in the motor and suppressing local magnetic saturation of the iron core, torque ripple during operation is also suppressed, and the motor efficiency is high and the torque ripple is low. A small motor is obtained.

In the first, fourth, sixth, eighth, and eighth embodiments, the difference between the position of the tip of the protruding portion of the end surface facing the rotor of the tooth and the difference of the odd multiple of 1/2 of the slot pitch of the rotor is provided.
The same effect as described above can be obtained by applying the present invention to a configuration in which the iron core cross-sectional area of the portion where magnetic saturation occurs between the teeth of the stator and the yoke portion of the electric motor having the above configuration is increased.

Embodiment 14 FIG. FIG. 13 is a partial view showing a main part of the configuration of the fourteenth embodiment. Embodiment 14
This configuration avoids local magnetic saturation in the case of an electric motor of a rotating electric machine having teeth on a rotor. In the figure, 1
51 is a stator, 152 is a rotor, which rotates in the direction of arrow R. The rotor 152 includes a tooth 153 having an end surface facing the inner surface of the stator 151 and having protrusions 153a and 153b on both sides of the facing surface. Similarly to the teeth 153, protrusions 154a are provided on both sides of the facing surface facing the stator. 154b, the teeth 1 which are excited in the opposite direction to the teeth 153
54, yoke portions 155 and 156 that form a magnetic path between the body portions of the teeth 153 and 154.
154, 153b, 154b on the rotor rotation direction side
The cross-sectional area of the core is larger than the cross-sectional area of the other protruding portions 153a and 154a, and the cross-sectional area of the core of the yoke portions 155 and 156 has leakage magnetic flux from the intermediate portion to the stator 151 side. Teeth 15 for iron parts 155 and 156
The portions 155a and 156a of the protruding portions 3 and 154 that are connected to the body portion on the side where the iron core cross-sectional area is increased are formed smaller than the core cross-sectional areas of the portions 155b and 156b that are connected to the other body portion. . 157 and 158 are teeth 1
53 and 154 are rotor windings wound around the body.

During operation of the electric motor constructed as described above, the magnetic flux due to the current flowing through the stator 151
Even if the magnetic flux is increased by being superimposed on the protrusions 153b and 154b of the 53 and 154, the magnetic saturation does not occur,
53, a yoke portion 155 that forms a magnetic path between
156 also does not become magnetically saturated. Teeth 153, 1
Since the iron core cross-sectional area of the connecting portions 155a and 156a of the yoke connecting to the protruding part side with the increased iron core cross-sectional area of 54 is formed to be small, the winding space of the stator winding is secured to the same area on the left and right. Therefore, there is no problem in winding the winding.

With this configuration, the winding space is not significantly deformed, and the winding can be easily loaded. The local magnetic saturation of the iron core is suppressed, and the motor efficiency is increased. .

Embodiment 15 FIG. FIG. 14 is a partial view showing a main part of the configuration of the fifteenth embodiment. In the fifteenth embodiment,
This configuration avoids local magnetic saturation in the case of a rotating electrical machine generator having teeth on the rotor. In the figure, 1
61 is a stator, 162 is a rotor, which rotates in the direction of arrow R. The rotor 162 includes a tooth 163 having an end surface facing the inner surface of the stator 161 and having protrusions 163a and 163b on both sides of the facing surface. Similarly to the teeth 163, the rotor 162 has protrusions 164a on both sides of the facing surface facing the stator. 164b, the teeth 1 which are excited in the opposite direction to the teeth 163
64, yoke portions 165 and 166 that form a magnetic path between the body portions of the teeth 163 and 164.
164, 163a, 1
The cross-sectional area of the iron core 64a is different from that of the protrusions 163b and 164 on the other side.
b to be larger than the iron core cross-sectional area, and the yoke portions 165, 166
Since there is a leakage flux from the intermediate portion to the stator 161 side of the iron core cross-section, a portion connected to the trunk portion on the side where the iron core cross-section of the protruding portion of the teeth 163 and 164 of each of the yoke portions 165 and 166 is increased. The cross-sectional areas of the cores 165b and 166b are formed smaller than the cross-sectional areas of the cores of the portions 165a and 166a connected to the body on the other side. 167, 168 are rotor windings wound around the body of the teeth 163, 164.

During operation of the generator constructed as described above, the magnetic flux due to the current flowing through the stator 161 causes the teeth 1
Even if the magnetic flux is increased by being superimposed on the projections 163a and 154a of the teeth 63 and 164, magnetic saturation does not occur.
Yoke portion 165 forming a magnetic path between 63 and 164;
166 also does not become magnetically saturated. Teeth 163, 1
Since the core cross-sectional area of the connecting portions 165b and 166b of the yoke portion connected to the protruding portion side where the core cross-sectional area of the core 64 is increased is formed small, the winding space for the stator windings has the same area on the left and right. Therefore, there is no problem in winding the stator winding.

With this configuration, it is possible to secure a configuration in which the winding space of the winding is not significantly deformed and the winding can be easily loaded, local magnetic saturation of the iron core is suppressed, and the generator efficiency is reduced. Get higher.

Embodiment 16 FIG. In the above description, the configuration is such that the magnetic saturation of the iron core portion of the rotating electric machine of the electric motor or the generator is avoided. However, if the constitution of the rotating electric machine is linearly developed, it becomes a linear motor. The sixteenth embodiment is an embodiment in which the configuration of the rotating electric machine is applied to a linear motor. FIG. 15 shows the configuration of the sixteenth embodiment. In the figure, 17
Reference numeral 1 denotes a mover, which includes a plurality of N magnetic poles 171N and S magnetic poles 17
1S are linearly arranged at predetermined intervals, and move in the direction of arrow R. 172 is a stator, 173 is a mover 17
Projecting portions 173a, 173 on the left and right sides of the end portion facing the magnetic pole 1
The teeth 174 provided with 3b have protrusions 174a at the ends facing the mover 171 similarly to the teeth 173.
The teeth 173b provided on the side opposite to the moving direction of the teeth 173, 174 of the teeth 173, 174 are excited in the opposite direction to the teeth 173 provided with the 174b. The iron core has a large cross-sectional area. 175 is a yoke that forms a magnetic path between the body of the tooth 173 and the body of the tooth 174, and 176 is the body of the tooth 174 and the subsequent tooth 1
73, a yoke portion forming a magnetic path between the torso portions, and each yoke portion 17
The portions connected to the teeth body on the side of the protruding portions 175b and 176b with the iron core cross-sectional area of the teeth 5, 176 increased.
The cross-sectional area of the iron core is smaller than that of the portion connected to the other side of the teeth body. 177, 178 are teeth 173, 1
74 is a stator winding wound around the body 74.

In the operating state of this configuration, the stator 1
The magnetic flux 72 has a large amount of magnetic flux at the protruding portions of the teeth 173 and 174 on the side opposite to the moving direction of the mover, but does not saturate magnetically because the core cross-sectional area is large.
75 and 176 have leakage magnetic flux from the middle part to the mover side,
Since there is little magnetic flux in the portion connected to the teeth in the moving direction of the mover, no magnetic saturation occurs even if the iron core cross-sectional area is small.

With this configuration, the iron core has a cross-sectional area corresponding to the distribution of the magnetic flux in each portion of the stator, local magnetic saturation is suppressed, and a linear motor with high operating efficiency is obtained.

Embodiment 17 FIG. The seventeenth embodiment is a method of manufacturing the core member of the rotating electric machine of the electric motor or the generator according to the first or third to eleventh embodiments. For example, FIG. 16 shows an arrangement diagram for punching out each iron core member in the case of the first embodiment. In the figure, reference numeral 201 denotes a rotor core;
4 is a tooth core, and 205 and 206 are one set of each core member of the yoke core. The core members are arranged slightly above and below the rotor core 201 with the sides where the protruding portions of the tooth cores 203 and 204 are widened in the same direction, and are slightly inclined up and down. Iron core 201
When the protruding portions of the teeth cores 203 and 204 are arranged so as to embrace them, the scrap portion is reduced and the yield of the core material is improved.

In the iron core manufacturing operation, one set of FIG.
In this operation, punching is performed in a number of operations, and a band-shaped iron core material is sequentially fed and punched. By punching the width of the band-shaped core material as the maximum width W of the arrangement diagram in FIG. 16 as the width of the core material,
A motor or generator core with good material yield can be manufactured.

[0069]

According to the first aspect of the present invention, there is provided a rotating electric machine.
The side of the teeth where the magnetic flux increases due to the rotor current is larger than the other side, and the core cross-sectional area of the part of the yoke that connects to the body of the teeth is larger than the core cross-sectional area. Since the part side is smaller than the other side, there is no part where the magnetic saturation of the stator occurs in the operating state of the rotating electric machine, the excitation current does not increase, and the operating efficiency with the increase of iron loss and copper loss is suppressed is high It becomes a rotating electric machine.

According to a second aspect of the present invention, there is provided a rotating electric machine in which a body of a tooth arranged opposite to an outer periphery of the rotor according to the first aspect is rotated by a rotor current with respect to a center line of the rotating electric machine. Arranged biased to the side where the magnetic flux increases, the core cross-sectional area of the part connected to the side where the core cross-sectional area of the teeth body of the yoke part is increased, the side where the teeth body is biased is smaller than the other side As a result, there is no wasted space in the rotating electric machine, local magnetic saturation of the stator core is suppressed, and the rotating electric machine has high operating efficiency.

In the rotating electric machine according to a third aspect of the present invention, the iron core cross-sectional area of the teeth protruding portion disposed opposite to the outer peripheral surface of the rotor according to the first aspect is increased by the rotor current to increase the magnetic flux. Is larger than the other side, the upper surface and the lower surface of the left and right yoke parts are the same plane, and the core cross-sectional area of the part of the yoke part connected to the teeth body is a protruding part with a larger iron core cross-sectional area Side is smaller than the other side, and the inner surface of the part connected to both sides of the teeth body of the yoke is formed with an inclined plane, so the shape of the winding space of the stator winding is improved, The wires can be wound in a parallel state, whereby local magnetic saturation of the iron core is suppressed, and a rotating electric machine with high operating efficiency is obtained.

In the rotating electric machine according to a fourth aspect of the present invention, the iron core cross-sectional area of the teeth protruding portion disposed opposite to the outer peripheral surface of the rotor according to the first aspect is increased by the rotor current. Side is larger than the other side, the upper and lower surfaces of the left and right yoke parts are respectively the same plane, and the core cross-sectional area of the part connected to the teeth body of the yoke part is the protruding part side with the larger iron core cross-sectional area Is smaller than the iron core cross-sectional area near the part connected to the other side, and the inner surface of the part connected to both sides of the teeth body of the yoke is an inclined plane including the respective inner corners of the left and right yoke parts Formed, the teeth body is arranged at a right angle to the inclined inner surface of the part connected to the teeth body of the yoke, so that the shape of the winding space of the stator winding is even better And keep the winding wires in parallel with the shortest length. Is localized magnetic saturation of the core can have come is suppressed, and high operating efficiency rotary electric machine.

According to a fifth aspect of the present invention, there is provided a rotating electric machine, wherein a yoke portion forming a magnetic path between the body portions of the teeth according to the first to fourth aspects is provided on the left and right outer surfaces of the rotating electric machine. The core on the protruding part, which is symmetrical about the center line and has a reduced iron core cross-sectional area at the part connected to the protruding part torso with a larger iron core cross-sectional area, and a smaller adjacent iron core cross-sectional area The core cross-sectional area of the part connected to the part is increased, and the core cross-sectional area of the yoke is formed so as to gradually decrease from the large side to the small side, thereby suppressing the unnecessary weight increase of the rotating electric machine be able to.

According to a sixth aspect of the present invention, there is provided a rotating electric machine having triangular recesses provided above and below a center line of the rotating electric machine of the stator according to any one of the first to fourth aspects, and wound around the body of the teeth. In addition to the windings, the compensation winding was added between each tooth side on the other side of the side where the magnetic flux increases due to the rotor current of the tooth protrusion and each of the upper and lower triangular recesses. Even when the winding space between the left and right windings is unbalanced, the required magnetizing force can be compensated and the operating efficiency of the rotating electric machine can be increased.

According to a seventh aspect of the present invention, there is provided a rotating electric machine, wherein the tip of the protruding portion on the side where the magnetic flux is increased by the rotor current of the protruding portion provided on both sides of the teeth according to the first to fourth aspects is provided. The angle of the line connecting the center of the rotating electrical machine to the center line of the rotating electrical machine and the angle of the line connecting the tip of the other protrusion to the center of the rotating electrical machine to the center line of the rotating electrical machine are different angles. Is 1/2 of the rotor slot pitch
Thus, the suction force and the repulsion force acting on the tip of the tooth protrusion during operation are canceled, and the torque ripple of the rotor is suppressed.

The rotating electric machine according to claim 8 of the present invention is a rotating electric machine having teeth provided on a rotor, and the cross-sectional area of the iron core of the teeth protruding portion is set such that the side where the magnetic flux due to the rotor current is larger than the opposite side. The cross-sectional area of the core of the yoke that forms the magnetic path between the body of the rotor teeth is the same as that of the tooth body on the other side. Since it is smaller than the part that connects to the winding, securing a configuration that the winding can be wound without significantly deforming the winding space of the winding, local magnetic saturation of the stator is suppressed,
Driving efficiency increases.

According to a ninth aspect of the present invention, in the linear motor, the cross-sectional area of the iron core of the projecting portion of the teeth is made larger than the other side on the side where the magnetic flux due to the current flowing through the stator increases.
The cross-sectional area of the core of the yoke that forms the magnetic path between the body of the teeth of the stator is such that the portion connected to the body of the protruding portion with the increased cross-sectional area of the iron core of the teeth is larger than the protruding portion on the other side. Since the size is reduced, local magnetic saturation is suppressed, and operation efficiency is increased.

According to a tenth aspect of the present invention, there is provided a method for manufacturing a rotating electric machine, wherein the rotor core has an arc shape which can be disposed so that one end thereof faces the outer peripheral surface of the rotor. A protruding portion in which one width is wider than the other width is formed, and on both sides of the other end, a portion that connects to a yoke portion that forms a magnetic path between the teeth is provided, and the width of the connecting portion is the width. A pair of teeth iron cores with the width of the protruding part side narrower than the width of the opposite side, and a pair of yoke cores whose ends match the shape of the part connected to the yoke part of the teeth A set of each core member is configured, a rotor core in the center, a pair of teeth cores on both sides thereof, and a slope in which the width of the connection portion is reduced in the same direction so that the connection portion extends upward and downward. And the width of the connection part side where the width of the teeth iron core is reduced Since so as to produce the core members inside portion Tsu punched in an arrangement nesting of arranging the pair of yoke portions iron core, iron core of a rotating electrical machine can be good yield.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an electric motor according to a first embodiment.

FIG. 2 is a configuration diagram of an electric motor according to a second embodiment.

FIG. 3 is a configuration diagram of a generator according to a third embodiment.

FIG. 4 is a configuration diagram of an electric motor according to a fourth embodiment.

FIG. 5 is a configuration diagram of a generator according to a fifth embodiment.

FIG. 6 is a configuration diagram of an electric motor according to a sixth embodiment.

FIG. 7 is a configuration diagram of a generator according to a seventh embodiment.

FIG. 8 is a configuration diagram of an electric motor according to an eighth embodiment.

FIG. 9 is a configuration diagram of a generator according to a ninth embodiment.

FIG. 10 is a configuration diagram of an electric motor according to an eleventh embodiment.

FIG. 11 is a configuration diagram of a generator according to a twelfth embodiment.

FIG. 12 is a configuration diagram of an electric motor according to a thirteenth embodiment.

FIG. 13 is a configuration diagram of an electric motor according to a fourteenth embodiment.

FIG. 14 is a configuration diagram of a generator according to a fifteenth embodiment.

FIG. 15 is a configuration diagram of a linear motor according to a sixteenth embodiment.

FIG. 16 is a layout diagram of punching of a core member of a motor or a generator according to a seventeenth embodiment.

FIG. 17 is a configuration diagram showing a shape of an iron core of a conventional electric motor.

FIG. 18 is a diagram showing a magnetic flux passing state of various parts of an iron core of a conventional electric motor.

FIG. 19 is an explanatory diagram showing a magnetic flux distribution of a conventional electric motor.

FIG. 20 is a configuration diagram of a conventional motor in which torque ripple is suppressed.

[Explanation of symbols]

30 motor center line, 31 rotor, 32 stator, 3
3,34 teeth, 35,36 yoke, 37,38
Stator winding, 40 motor centerline, 41 rotor, 4
2 Stator, 43,44 Teeth, 45,46 Yoke, 47,48 Stator winding, 50 Generator center line, 5
2 Stator, 53, 54 Teeth, 55, 56 Yoke, 57, 58 Stator winding, 60 Motor center line, 6
2 Stator, 63, 64 teeth, 65, 66 Yoke, 67, 68 Stator winding, 70 Generator center line, 7
2 Stator, 73, 74 Teeth, 75, 76 Yoke, 77, 78 Stator winding, 80 Motor center line, 8
2 stator, 83,84 teeth, 85,86 yoke, 87,88 stator winding, 90 generator center line, 9
2 stator, 93,94 teeth, 95,96 yoke, 97,98 stator winding, 100 motor center line,
102 stator, 103, 104 teeth, 105,
106 yoke, 107, 108 stator winding, 110
Generator centerline, 112 stator, 113,114 teeth, 115,116 yoke, 117,118 stator winding, 120 motor centerline, 122 stator, 1
23,124 teeth, 125,126 yoke, 1
27,128 Stator winding, 130 Generator centerline, 1
32 Stator, 133, 134 teeth, 135, 1
36 Yoke, 137, 138 Stator winding, 140
Motor center line, 142 stator, 143,144 teeth, 145,146 yoke, 147,148 stator winding, 151 stator, 152 rotor, 153,1
54 Teeth, 155, 156 Yoke, 157, 1
58 rotor windings, 161 stators, 162 rotors,
163,164 teeth, 165,166 yoke,
167,168 Rotor winding, 171 mover, 172
Stator, 173, 174 teeth, 175, 176
Yoke part, 177,178 winding, 201 rotor core, 203,204 Teeth core, 205,206
Yoke core.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shuichi Odaka 1728-1, Koeda, Oaza, Hanazono-cho, Osato-gun, Saitama Prefecture Inside Mitsubishi Electric Home Equipment Co., Ltd. Mitsubishi Electric Home Equipment Co., Ltd. F-term (reference)

Claims (10)

[Claims] 1. A plurality of teeth having a T-shaped cross-section in which a rotor is opposed to an outer peripheral surface of the rotor, protruding portions are formed on both sides of the opposed surface, and a stator winding is wound around a body portion. In a rotating electric machine having a stator formed of a yoke portion forming a magnetic path between the teeth body portions, the iron core cross-sectional area of the teeth protruding portion is such that the side where the magnetic flux is increased by the rotor current is the other side. A rotating electric machine characterized in that the cross-sectional area of the core of the portion of the yoke portion connected to the body of the teeth is smaller on the side of the protruding portion where the cross-sectional area of the core is increased than on the other side. 2. A body portion of a tooth disposed opposite to an outer periphery of a rotor is biased toward a side where magnetic flux increases due to a rotor current with respect to a center line of the rotating electric machine. The rotating electric machine according to claim 1, wherein a cross-sectional area of the iron core of a portion connected to the body of the tooth is smaller on the side where the body of the tooth is biased than on the other side. 3. The cross-sectional area of the iron core of the teeth protruding portion disposed opposite to the outer peripheral surface of the rotor is set such that the side where the magnetic flux increases due to the rotor current is larger than the other side, and The upper surface and the lower surface are the same plane, and the part connected to the protruding part side where the iron core cross-sectional area of the yoke part is increased is made smaller than the other side, and the part connected to both sides of the teeth body part of the yoke part The rotating electric machine according to claim 1, wherein the inner surface is formed by the same inclined plane. 4. A cross-sectional area of an iron core of a tooth protruding portion disposed opposite to an outer peripheral surface of a rotor is set such that a side where a magnetic flux is increased by a rotor current is larger than the other side, and The upper surface and the lower surface are respectively the same plane, the iron core cross-sectional area of the part connected to the protruding part side where the iron core cross-sectional area of the teeth of the yoke part is increased is made smaller than the other side, and it is connected to the left and right of the teeth body part of the yoke part The inner surface of the portion is formed in the same plane that is inclined, and the teeth body is disposed in an inclined direction perpendicular to the inclined inner surface of the part connected to the teeth body of the yoke. Item 4. The rotating electric machine according to Item 1. 5. A yoke portion forming a magnetic path between the body portions of the teeth, the left and right outer surfaces are symmetrical with respect to the center line of the rotating electric machine, and the protruding portion side has a larger iron core cross-sectional area. The core cross-sectional area of the part connected to the torso is smaller, the core cross-sectional area of the adjacent teeth is smaller, and the core cross-sectional area of the part connected to the torso of the protruding part is larger, and the core cross-sectional area of the yoke is larger The rotating electric machine according to any one of claims 1 to 4, wherein the rotating electric machine is formed so as to gradually decrease from a lower side. 6. Triangular depressions are provided above and below the center line of the rotating electric machine of the stator, and in addition to the stator winding wound around the body of the teeth, the magnetic flux is generated by the rotor current of the protruding portions of the teeth. The compensation winding according to any one of claims 1 to 4, wherein a compensation winding is added between each of the teeth side portions on the side opposite to the side where the number increases and each of the upper and lower triangular concave portions. Rotating electric machine. 7. A center line of the rotating electric machine, which is a line connecting the tip of the projecting portion on the side where the magnetic flux increases due to the rotor current of the projecting portion provided on both sides of the facing surface facing the rotor of the teeth and the center of the rotating electric machine. And the angle of the line connecting the tip of the opposite protruding portion and the center of the rotating electric machine to the center line of the rotating electric machine are different angles, and the difference between the two angles is an odd multiple of 1/2 of the slot pitch of the rotor. 2. The method according to claim 1, wherein
The rotating electric machine according to claim 4. 8. A stator having magnetic poles directed toward the inner periphery, a protruding portion formed on both sides of the opposed surface facing the inner peripheral surface of the stator, and a rotor winding wound around the body. In a rotating electric machine including a rotor formed of a plurality of teeth having a T-shaped cross section and a yoke portion forming a magnetic path between the teeth body and the teeth body, the iron core cross-sectional area of the teeth protruding portion is determined by the rotor The side where the magnetic flux due to the current increases is larger than the other side, and the core cross-sectional area of the yoke that forms the magnetic path between the body of the teeth of the rotor is the protruding side where the cross-sectional area of the iron core of the teeth is increased. A portion connected to the body portion of the rotating body is smaller than a portion connected to the teeth body portion on the other side. 9. A moving element having a plurality of magnetic poles arranged in a straight line, a moving element facing the moving element, a projection formed on both sides of the opposing surface in the moving direction of the moving element, and a winding wound around the body. Done T
In a linear motor having a stator in which a plurality of teeth having a U-shaped cross-section are arranged, the iron core cross-sectional area of the teeth protruding portion has a protruding portion on the side where the magnetic flux increases due to the magnetic flux of the mover,
The core cross-sectional area of the yoke that forms a magnetic path between the body of the teeth of the stator is larger than that of the other side. A linear motor characterized by being smaller than the other side. 10. A rotor core, and one end side is formed in an arc shape which can be disposed so as to face the outer peripheral surface of the rotor, and on both sides of the arc shape, a protruding portion whose one width is larger than the other width is formed. ,
On both sides of the other end side, there is provided a connecting portion with a yoke portion forming a magnetic path between the teeth, and the connecting portion is a pair of shapes in which the width of the protruding portion side having a larger width is narrower than the width of the other side. Each core member consisting of a tooth core and a pair of yoke cores whose ends match the shape of the part that connects with the yoke of the teeth is a set. A pair of teeth cores are arranged at a slant so that the part where the width of the connecting part is reduced and the connecting part spreads upward and downward, and the width of the tooth core is reduced and the width of the connecting part is reduced to the expanded inner part of the connecting part side. A method of manufacturing a rotating electric machine, in which a pair of yoke cores are arranged in a plate and punched to manufacture each member.