JP3172504B2 - Rotor of permanent magnet type reluctance type rotating electric machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a permanent magnet type relaxation machine.
The present invention relates to a rotor of a closet type rotating electric machine.

[0002]

2. Description of the Related Art A reluctance type rotating electric machine generally comprises a stator having an armature coil and a rotor rotating in the stator. The rotor is provided with a coil for forming a field. It is not formed, and is formed only of an iron core having irregularities. Therefore, there is a feature that the structure of the conventional rotor can be simplified.

In this reluctance type rotating electric machine, since the rotor has irregularities, the magnetic resistance is small at the convex portions, and the magnetic resistance is high at the concave portions. As a result, in the gap between the protrusion and the stator on the recess, the magnetic energy stored by flowing a current through the armature coil differs. The reluctance type rotating electric machine generates an output due to the change in the magnetic energy. Note that the uneven portion may be formed not only geometrically but also so as to be magnetically capable of forming unevenness, that is, a shape in which the magnetic resistance and the magnetic flux density differ depending on the rotational position of the rotor.

[0004]

As described above, the reluctance type rotating electric machine causes the magnetic resistance to vary depending on the rotational position due to the unevenness formed on the surface of the rotor core, and the output is changed by the changed magnetic energy. Are configured to obtain

However, when the current flowing through the stator coil increases, the magnetic saturation region expands at the convex portion of the iron core, and the magnetic flux leaking to the concave portion between the magnetic poles increases, and the output decreases. The problem arises.
In response to such a phenomenon, the applicant of the present application has previously arranged a permanent magnet on the side surface of the magnetic pole portion serving as a convex portion, and suppressed the effective magnetic flux by suppressing the magnetic flux leaking to the core concave portion between the magnetic poles and the magnetic pole side surface. A so-called permanent-magnet-type reluctance-type rotating electric machine has been filed to obtain a high output by increasing the output (Japanese Patent Application No. 9-90).
No. 175383).

However, this permanent magnet type reluctance type rotating electric machine has difficulty in self-starting because the holding torque is increased by the permanent magnets arranged on the side surfaces of the magnetic poles.
In order to obtain the starting torque and perform self-starting, it is conceivable to use a separate inverter or cover the rotor with a starting basket, but the structure becomes complicated, especially if a starting basket is adopted, There is a problem that the magnetic resistance increases and the main magnetic flux decreases.

Accordingly, the present invention has been made in view of the above circumstances, and a rotor of a permanent magnet type reluctance type rotating electric machine which can improve starting characteristics without requiring auxiliary starting means such as an inverter. The purpose is to provide.

[0008]

To achieve the above object, according to an aspect of, the invention described in claim 1, and a rotor core to form a magnetically uneven portion, along Ikatsu each pole axis of the rotor core
In a rotor of a permanent magnet type reluctance type rotating electric machine having a permanent magnet disposed leaving an outer peripheral portion of an iron core radially outward, the permanent magnets are provided at both ends in the circumferential direction of the rotor between magnetic poles. The rotor is magnetized so as to cancel the magnetic flux of the armature passing through the magnetic pole portion, and a conductor for generating an induced current is provided on an outer peripheral portion of the rotor core.

According to the first aspect of the present invention, since the conductor is provided on the outer peripheral portion of the rotor core, an induced electromotive force is generated in the conductor by electromagnetic induction at the time of startup, and self-starting is possible.

Since the permanent magnets are provided at both ends in the circumferential direction of the rotor between the magnetic poles and are magnetized so as to cancel the magnetic flux of the armature passing through the magnetic poles, the magnetic resistance increases in this direction. As a result, unevenness is generated in the air gap magnetic flux density, and a torque can be generated by this change in magnetic energy.

According to a second aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the first aspect, a conductor is embedded near an outer peripheral surface of a magnetic pole portion of the rotor core. It is characterized by comprising a plurality of magnetic bars extending in the axial direction.

As described above, according to a second aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the first aspect, a plurality of conductor magnetic bars are provided near the outer peripheral surface of the magnetic pole portion of the rotor core. Since it is buried, self-starting is enabled by its conductivity, and since the bar itself is formed of a magnetic material, the density of magnetic flux (main magnetic flux) flowing through the magnetic pole portion is reduced in addition to the effect of the invention according to claim 1. No impact on torque.

According to a third aspect of the present invention, in the permanent magnet rotor of the permanent magnet type reluctance type rotary electric machine according to the second aspect, a hollow portion is formed in a radially outer core portion. It is characterized by the following.

As described above, according to a third aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the second aspect, the hollow portion is formed in the outer core portion of the permanent magnet in the radial direction of the rotor. As a result, the magnetic circuit is interrupted here, and the magnetic resistance in the portion between the magnetic poles is further increased. Therefore, in addition to the effect of the invention of claim 2, the amount of change in magnetic energy with the magnetic pole portion increases, and a large torque can be generated.

According to a fourth aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotary electric machine according to the third aspect, the rotor extends in the axial direction of the rotor near the outer peripheral surface of the portion between the magnetic poles of the rotor core. A plurality of non-magnetic conductor bars for generating an induced current are embedded.

As described above, according to the fourth aspect of the present invention, the non-magnetic conductor bar is buried also in the vicinity of the outer peripheral surface of the portion between the magnetic poles of the rotor core. In addition, the self-starting characteristics are further improved. Further, the non-magnetism of the non-magnetic conductor bar further increases the magnetic resistance in the portion between the magnetic poles, and further increases the amount of change in magnetic energy between the magnetic poles.

According to a fifth aspect of the present invention, there is provided the rotor of the permanent magnet type reluctance type rotating electric machine according to the fourth aspect, wherein the non-magnetic conductor bar extends in the axial direction of the rotor and generates an induced current in the cavity. Is buried.

As described above, according to the fifth aspect of the present invention, since the nonmagnetic conductor bar is buried also in the hollow portion, the magnetic circuit is interrupted here, and in addition to the effect of the fourth aspect of the present invention. In addition, the magnetic resistance between the magnetic poles further increases. Further, since the nonmagnetic conductor bar is embedded in the hollow portion, the strength of the rotor itself is also improved.

According to a sixth aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the first aspect, the conductor is embedded near an outer peripheral surface of a magnetic pole portion of the rotor core, and the rotor axis is And a plurality of non-magnetic bars extending in the direction of the rotor and extending in the axial direction of the rotor and embedded near the outer peripheral surface of the portion between the magnetic poles of the rotor core.

As described above, according to the sixth aspect of the present invention, the conductor bar is buried along the entire outer peripheral surface of the rotor core. Due to the conductivity, a starting property having a starting torque equivalent to that of the starting cage is achieved. In the magnetic pole portion, the deep groove type conductor bar is formed of a magnetic material, and in the portion between the magnetic poles, the conductor bar is formed of a non-magnetic material. To increase.

According to a seventh aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the first aspect, the conductor is buried in the vicinity of the outer peripheral surface of the portion between the magnetic poles of the rotor core. It is characterized by comprising a plurality of non-magnetic bars extending in the axial direction.

As described above, according to the seventh aspect of the present invention, the non-magnetic bar of the conductor is embedded only in the portion between the magnetic poles of the rotor core. Increases the reluctance of the portion between the magnetic poles. Further, since the bar is not buried in the magnetic pole portion, the structure is simplified.

According to an eighth aspect of the present invention, in the rotor of the permanent magnet reluctance type rotating electric machine according to the first aspect, the conductor is formed so as to cover an outer peripheral surface of the rotor core. And

As described above, according to the present invention, since the outer peripheral surface of the rotor core is covered with the conductor, at the time of starting, an induced current flows smoothly through the outer peripheral surface of the rotor due to its conductivity. The effect of the invention described in claim 1 is obtained, and the outer peripheral surface is covered with the conductor, so that the mechanical strength of the rotor can be improved.

According to a ninth aspect of the present invention, in the rotor of the permanent magnet reluctance type rotating electric machine according to the eighth aspect, the conductor covers the entire outer peripheral surface of the rotor core and is formed in a cylindrical shape. It is characterized by.

As described above, according to the ninth aspect of the present invention, since the conductor covers the entire outer peripheral surface of the rotor core, an induced current flows at the time of starting due to its conductivity, and self-starting becomes possible. Since the conductor is cylindrical, the mechanical strength can be increased with a simple structure.

According to a tenth aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the eighth aspect, the conductor is connected to the outer peripheral surface of the magnetic pole portion of the rotor core and the portion between the magnetic pole portions is provided. Characterized by a plurality of shell members that cover the shell.

Thus, the invention according to claim 10 is
Since the conductor covers the portion between the magnetic poles of the rotor iron core, an induced current flows through this portion during startup due to its conductivity. In addition, since the conductor is connected to the outer peripheral surface of the magnetic pole portion, in addition to the operation described in claim 8, air resistance (windage) of the rotor can be reduced, and rotation efficiency can be increased.

According to an eleventh aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the first aspect, the conductor is disposed near an outer peripheral surface of a portion between the magnetic poles of the rotor core. It is characterized by being curved along the circumferential direction.

As described above, the invention according to claim 11 is
Since the conductor is arranged in the vicinity of the outer peripheral surface of the portion between the magnetic poles of the rotor core, an induced current flows through this portion at the time of starting due to its conductivity, and self-starting becomes possible as in the first aspect of the present invention. .

According to a twelfth aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotary electric machine according to the first aspect, the conductor has a plurality of slits in a circumferential direction in the rotor core body. And

As described above, in the rotor of the permanent magnet type reluctance type rotary electric machine according to the twelfth aspect of the present invention, the conductor provided on the outer peripheral portion of the rotor core has a plurality of slits in the circumferential direction in the rotor core body. As a result, the induced current at the time of starting flows while forming a long path in the rotor axial direction (circumferential direction).
Therefore, as a result, the magnetic coupling with the armature is strengthened, and a large starting torque can be obtained.

According to a thirteenth aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotary electric machine according to the twelfth aspect, the conductor is formed so as to cover an outer peripheral surface of the rotor core. Features.

As described above, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the thirteenth aspect of the present invention, since the outer peripheral surface of the iron core is covered with the conductor having the slit, the induced current flows smoothly on the outer peripheral surface of the rotor. In addition, self-starting is further facilitated. In addition, since the outer peripheral surface of the iron core is covered with the conductor, the mechanical strength of the rotor can be further improved in addition to the effect of the invention of claim 12.

According to a fourteenth aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the thirteenth aspect, the conductor covers the entire outer peripheral surface of the rotor core and is formed in a cylindrical shape. Features.

As described above, according to the invention of claim 14, in the rotor of the permanent magnet type reluctance type rotating electric machine according to claim 13, the conductor covers the entire outer peripheral surface of the rotor core. In addition to the effect of the invention described in the above, a cylindrical structure covering the entire outer peripheral surface of the center more than the entire outer peripheral surface of the rotor is formed, so that the mechanical mood of the rotor is reduced and the rotational efficiency is increased. be able to.

According to a fifteenth aspect of the present invention, the permanent magnet type reluctance type rotating strength of the thirteenth aspect is further constituted by a plurality of shell members which cover the portion between the magnetic poles.

As described above, according to a fifteenth aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the thirteenth aspect, the portion between the magnetic poles of the rotor core is covered with the conductor. Thus, at the time of starting, an induced current flows through this portion, and self-starting becomes possible. Further, since the conductor is connected to the outer peripheral surface of the magnetic pole portion, the air resistance (windage) of the rotor is reduced, and the rotation efficiency can be increased.

According to a sixteenth aspect of the present invention, in the rotor of the permanent magnet reluctance type rotating electric machine according to the twelfth aspect, the conductor is disposed near an outer peripheral surface of a portion between the magnetic poles of the rotor core. Characterized by being curved along the circumferential direction.

Thus, according to the invention of claim 16, in the rotor of the permanent magnet type reluctance type rotating electric machine according to claim 12, the conductor is arranged near the outer peripheral surface of the portion between the magnetic poles of the rotor core. Similarly to the twelfth aspect of the invention, at the time of starting, an induced current flows through the conductor portion, and self-starting becomes possible.

According to a seventeenth aspect of the present invention, in the rotor of the permanent magnet type reluctance rotating electric machine according to the thirteenth or fifteenth aspect, the conductor is made of a conductive magnetic material.

As described above, in the rotor of the permanent magnet type reluctance type rotating electric machine according to the seventeenth aspect of the present invention, the conductor covering at least the outer peripheral surface of the rotor iron core is made of a conductive material having good conductivity and made of a magnetic material. Claim 13 is made of a material.
Or in addition to the effect of the invention of 14 above, the magnetic resistance of the rotor to the main magnetic flux can be reduced, and the main magnetic flux can be increased,
In addition, starting and pulling in can be performed even with respect to a load that requires a larger torque because slippage during synchronous pulling in is reduced.

[0043]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the permanent magnet type Li according to the present invention
One embodiment of a rotor of a lactance type rotating electric machine will be described with reference to the accompanying drawings.

FIG. 1 shows a radial cross section of a permanent magnet type reluctance type rotary electric machine to which the first embodiment according to the present invention is applied. The permanent magnet type reluctance type rotating electric machine includes a stator 1 having a four-pole armature coil 2 and a rotor 3 housed in the stator 1.

The rotor 3 has a rotor shaft 30 made of a magnetic material in the center, and a rotor core 4 fitted to the rotor shaft 30.
Is made of a magnetic material such as cylindrical mild steel S45C or laminated substantially circular silicon steel plates. In the direction along each magnetic pole axis of the rotor core 4, hollow portions 5 having a rectangular cross section are formed at intervals of the magnetic pole width.
An eB-based rectangular permanent magnet 6 is firmly embedded with, for example, an adhesive. That is, in this embodiment, the rotor 3 is
The two magnetic pole portions 4a are formed in a cross shape, and the permanent magnet 6 is arranged at a position sandwiching each magnetic pole portion 4a from both sides. In the rotors 3 of a plurality of embodiments described below, the rotor shaft 30 made of a magnetic material passes through the center of the stacked rotor cores 4. Instead, the rotor 3 may be formed by laminating and bonding a disc-shaped iron core having no opening at the center.

The permanent magnet 6 is magnetized in a direction perpendicular to the magnetic pole axis, and generates a magnetic flux leaking from the armature coil 2 flowing to the sector-shaped magnetic pole portion 4b sandwiched between the two permanent magnets 6 that are substantially perpendicular to each other. On the other hand, they are arranged in such a direction that the magnetic flux from the permanent magnet 6 resists. That is, the relationship between the permanent magnets 6 on both sides of the magnetic pole portion 4a is the direction in which the magnetization directions are the same and are orthogonal to the magnetic poles. Further, the two permanent magnets 6 located on both sides of the inter-magnetic pole portion 4b have opposite magnetization directions in the circumferential direction of the rotor core 4.

In the vicinity of the outer peripheral surface of the cross-shaped magnetic pole portion 4a sandwiched between the opposed permanent magnets 6, a deep groove type bar (bar) having an isosceles triangular cross section in the direction of the rotor axis perpendicular to the drawing.
A plurality (for example, five) 7 are embedded with their vertices facing outward. The bars 7 are formed of a so-called conductive magnetic material typified by aluminum-added iron or silicon-added iron, for example. (Not shown) and the like. The cross-sectional shape of the deep groove type bar 7 may be rectangular or elliptical. The operation of these magnetic conductor bars 7 is such that when the rotating electric machine starts, the magnetic flux from the armature coil 2 causes an induced current to flow through the bars, and a starting torque is generated in the rotor 3 to enable self-starting. Becomes As described above, since the magnetic bar 7 itself is formed of a magnetic material similarly to the iron core 4, there is no adverse effect on the magnetic flux (main magnetic flux) flowing through the magnetic pole portion 4a.

Further, according to the present embodiment, the core portions on both sides of the magnetic bar group 7 embedded in each of the magnetic pole portions 4a and radially outside the rotor of each permanent magnet 6 have a cross section. A circular cavity 8 is formed. This allows
The boundary between the magnetic pole portion 4a and the inter-magnetic pole portion 4b becomes clear,
The magnetic circuit is interrupted here, and the magnetic resistance of the inter-pole portion 4b is further increased. Therefore, the amount of change in magnetic energy with the magnetic pole portion 4a increases, and a large torque can be generated.

The present invention is not limited to the structure according to the above embodiment, and various modifications are possible. FIG. 2 shows the second
2 shows a radial cross section of the rotor of the permanent magnet type rotating electric machine according to the embodiment. Note that, in common with each embodiment described below, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

In the rotor according to the second embodiment, the permanent magnet cavity 5 and the outer cavity 8 in the first embodiment are constituted by one cavity 9 having a rectangular cross section. The permanent magnet 6 is arranged such that one end in the longitudinal direction is in contact with the inner end of the cavity 9. The operation is the same as that of the rotor 3 of the first embodiment, and the boundary between the magnetic pole portion 4a and the inter-magnetic pole portion 4b is clarified by the cavity (portion) remaining outside the permanent magnet 6, and the magnetic field is reduced. The circuit is interrupted here. The merging of the permanent magnet cavity 5 and the cavity 8 according to the first embodiment has an advantage that two die-cutting steps are required in manufacturing.

FIG. 3 shows a radial cross section of a rotor according to the third embodiment. In the third embodiment, the portion 4 between the magnetic poles of the rotor 3 according to the first embodiment is used.
A plurality of conductor bars 10 having a circular cross section are buried in the outer peripheral surface of the rotor b. However, the conductor bar 10 is formed from a so-called non-magnetic material such as copper or aluminum. Thereby, at the time of starting, an induced current also flows near the outer peripheral surface of the portion 4b between the magnetic poles of the rotor 3, and the self-starting characteristic is improved. Further, due to the non-magnetism, the magnetic resistance in the inter-magnetic pole portion 4b is further increased as compared with the rotor 3 of the first and second embodiments, and the amount of change in magnetic energy with the magnetic pole portion 4a is further increased. The output increases with an increase.

FIG. 4 shows a radial cross section of the rotor according to the fourth embodiment. As in the third embodiment, the portion 4 between the magnetic poles of the rotor 3 according to the second embodiment is shown in FIG.
b, a plurality of nonmagnetic conductor bars 10 are provided along the outer peripheral surface of the rotor. The operation is the same as that of the third embodiment.

FIG. 5 shows a radial cross section of a rotor according to a fifth embodiment. In the rotor according to the fifth embodiment, a nonmagnetic conductor bar 11 having a circular cross section is embedded in the hollow portion 8 of the rotor 3 according to the third embodiment. As a result, the boundary between the magnetic pole portion 4a and the inter-magnetic pole portion 4b of the rotor 3 becomes clearer, and the amount of change in magnetic energy between the magnetic pole portion 4a and the magnetic pole portion 4a further increases, thereby improving the output.

FIG. 6 shows a radial cross section of a rotor according to a sixth embodiment. The rotor of this embodiment is obtained by modifying the shape of the rotor core 4 of the first embodiment, and has four fan-shaped hollow portions 12 formed in the inter-magnetic pole portion 4b. As a result, due to the action of the high magnetic resistance of the permanent magnet 6 and the cavity 12, the magnetic flux of the component along the axis between the magnetic poles is reduced, and the amount of change in magnetic energy with the magnetic pole 4a is further increased and the output is improved. Will be done.

FIG. 7 shows a radial cross section of the rotor according to the seventh embodiment. The rotor core 4 in the second embodiment differs from the rotor core 4 in the fan-shaped shape as in the sixth embodiment. Are formed at four locations. Action is also sixth
This is the same as the embodiment.

The cross section of the nonmagnetic conductor bar 10 shown in each of the third, fourth and fifth embodiments does not necessarily have to be circular, but may be rectangular or triangular.

FIGS. 8, 9 and 10 show the eighth,
14 shows a radial cross section of a rotor of a permanent magnet type rotating electric machine according to ninth and tenth embodiments. The rotor of each of these embodiments is different from the rotor core 4 of each of the third, fourth, and fifth embodiments in that a fan-shaped hollow portion 12 is provided in the same manner as in the sixth embodiment. The portion 4b between the magnetic poles formed by providing the cavity 12
Are the same as those of the rotor 3 in the third, fourth and fifth embodiments, except for the effect of increasing the magnetic resistance.

FIG. 11 shows a radial cross section of a rotor according to an eleventh embodiment of the present invention. The rotor according to this embodiment is a modification of the tenth embodiment,
Cavities 8 having the same cross section are formed at equal intervals over the entire circumference of the rotor 3, and a magnetic conductor bar 14 is embedded in the cavity 8 located at the magnetic pole portion 4 a in the axial direction of the rotor 3. The nonmagnetic conductor bar 11 is buried in the hollow portion 8 located at the portion 4b between the magnetic poles. As a result, the conductor bars 11 and 14 having the same shape are uniformly arranged around the rotor 3, and when the rotating electric machine is started, the conductor bars 11 and 14 are guided into the respective bars 11 and 14 by the magnetic flux from the armature coil 2. Electric current flows,
Self-start is possible.

FIG. 12 shows a rotor according to a twelfth embodiment similar to the eleventh embodiment. The rotator 3 according to the eleventh embodiment includes a hollow portion located at the magnetic pole portion 4a. 8 is abolished and no magnetic conductor bar is provided. Thus, also in the rotor 3, when the rotating electric machine is started, a sufficiently large induced current flows through the conductor bar 11, and self-starting is ensured.

Incidentally, as in the sixth to eleventh embodiments described above, the large hollow portion 1 is formed in the inter-magnetic pole portion 4b.
In common with the rotors 3 forming the rotor 2, the bridge portion of the rotor 3 (the outer core located at the portion 4b between magnetic poles) tends to deform outward due to centrifugal force during high-speed rotation.

FIGS. 13 to 16 show cross sections of the rotor core 4 provided for the purpose of preventing deformation of the rotor 3 during high-speed operation.
In the rotor core 4 in which a number of circular plates are laminated as shown in FIG.

That is, according to the thirteenth embodiment of the present invention shown in FIG. 13, the fan-shaped hollow portion 12 of the portion 4b between the magnetic poles is eliminated from the rotor core 4 of FIG. No cavity was formed in 4A except for the cavity 5 accommodating the permanent magnet 6. As a result, in the rotor core 4 in which the rotor core plate 4A is disposed on the end face or in the intermediate position, the portion 4b between the magnetic poles is reinforced and resists the centrifugal force at the time of high rotation. Can be.

In the fourteenth embodiment shown in FIG. 14, the inter-pole portion 4b of the rotor core plate 4B is
A cavity 15 slightly smaller than the fan-shaped cavity 12 was formed. As a result, in the rotor 3 in which the rotor core plate 4B is disposed at the end face or in the intermediate state, the inter-magnetic pole portion 4b is reinforced at this portion.

As another means for reinforcing the inter-magnetic pole portion 4b, as shown in FIGS. 15 and 16 as the fifteenth and sixteenth embodiments of the present invention, a bridge is provided radially outward from the center of the rotor. The member 16 (a part of the iron core) may be extended to support the arc-shaped inter-magnetic pole portion 4b from the inside. The rotor core plate 4 shown in FIG.
C shows the rotor core 4 having the laminated structure shown in FIG.
The rotor core plate 4D shown in FIG. 3 is interposed in the rotor core 4 having the laminated structure shown in FIG. 12 to reinforce the inter-magnetic pole portion 4b.

FIG. 17 shows a radial cross section of a rotor according to a seventeenth embodiment of the present invention. In the rotor of this embodiment, a hollow portion 12 is formed in the portion 4b between the magnetic poles, and a cylindrical member 17 made of a conductive material is fitted over the entire outer peripheral surface thereof. The material of the cylindrical member 17 may be a so-called non-magnetic material such as copper or aluminum, or a magnetic material having good conductivity.

As a result, at the time of starting the rotating electric machine, a starting torque is generated by the induced current flowing through the member 17 in the axial direction of the rotor, and the rotor 3 can start itself. The conductive cylindrical member 17 has a smaller number of parts, a higher mechanical strength, and is easier to manufacture than the above-described embodiment in which a large number of conductive bars are embedded, due to its simple structure. is there.

As a material having good conductivity, there is an alloy of copper and iron, etc., but in this embodiment, the thickness of the cylindrical member is from one to four times the skin thickness determined by the magnetic permeability and the electric conductivity. By doubling, the starting torque is large, and the slip of synchronization is small, so that the pull-in is particularly easy.

FIG. 18 is a radial cross section of a rotor according to an eighteenth embodiment of the present invention. According to the present embodiment, rotor 3 is formed of a substantially cross-shaped iron core 18 along the magnetic pole axis by eliminating the connecting portion (bridge portion) between the magnetic poles for the purpose of improving the yield at the time of removing the steel plate. You. The tip of the magnetic pole portion 18a of the iron core 18 is formed in a dovetail shape, and a cylindrical member 19 made of a conductive material is formed on the outer periphery thereof in a dovetail shape to engage with the dovetail-shaped tip. The portion surrounded by the cylindrical member 19 and the cross-shaped iron core 18 becomes the hollow portion 12. The operation is exactly the same as that of the seventeenth embodiment, and the material yield is improved due to the iron core shape, and the manufacturing cost can be reduced. In addition, since the fitting between the iron core 18 and the cylindrical member 19 is firmly fixed by the engagement between the dovetail-shaped tip and the dovetail groove, there is no problem of slippage due to the high-speed rotation of the rotor, and the strength can be improved. Regarding the magnetism of the conductive cylindrical members 17 and 19, the magnetic resistance of the portion 4b between the magnetic poles is increased by forming the cylindrical members 17 and 19 from a non-magnetic material.
Although it is preferable to reduce the magnetic flux along the axis between the magnetic poles, a magnetic material having good conductivity may be used.

When a good conductive material is used, as in the seventeenth embodiment, the thickness of the cylindrical member is set to be one to four times the skin thickness determined by the magnetic permeability and the electric conductivity. The starting torque is high and the slippage of the synchronization is small, making it particularly easy to pull in.

FIG. 19 shows a radial cross section of a rotor according to a nineteenth embodiment of the present invention. The rotor according to this embodiment is a modification of the eighteenth embodiment described above, in which a conductor provided on the outer peripheral surface of the rotor is replaced by four curved shell members 20 connected to the outer peripheral surface of the magnetic pole portion 4a. It consists of. As shown, each shell member 20 covers the inter-magnetic pole portion 4b positioned radially inward of the tip of the magnetic pole portion 4a, and is integrated by the engagement of the dovetail-shaped and dovetail-shaped projections. In the rotor according to the nineteenth embodiment, since the portion 4b between the magnetic poles is covered with the shell member 20, an induced current flows through this portion at the time of starting, and self-starting is possible. Further, since the shell member 20 is connected to the outer peripheral surface of the magnetic pole portion 4a and is formed to form the rotor 3 having a circular cross section, its air resistance (windage loss)
And the rotational efficiency can be increased.

FIG. 20 shows a radial cross section of a rotor according to a twentieth embodiment of the present invention. The rotor according to this embodiment has a conductive shell member 21 similar to the above-described shell member 20 fixed to the outer wall of the hollow portion of the cylindrical rotor core 4 having the hollow portion 12. The induced current flows through the shell member 21 located relatively outside the inter-magnetic pole portion 4b, thereby enabling self-starting.

FIG. 21 shows a radial cross section of a rotor according to the twenty-first embodiment, similar to the eighteenth and nineteenth embodiments. In this embodiment, the rotor core 4 is formed so as to have a substantially cross-section without the magnetic pole portion (bridge portion) 4b in FIG. The circumferential ends of the magnetic pole portion 4a are connected to the conductive shell member 22.
The shell member 22 is engaged and fixed so that the shell member 22 does not fall off from the rotor 3 even when a centrifugal force is applied to the rotor 3. As described above, in the twenty-first embodiment, the shell member 22 is provided as a part of the cylindrical rotor in the portion between the magnetic poles of the rotor 3. Start is possible. Further, since the shell member 22 is connected to the outer peripheral surface of the magnetic pole portion 4a, its air resistance (windage loss) can be reduced and the rotation efficiency can be increased. The shell member 22 thus formed is provided as a separate body corresponding to each portion between the magnetic poles of the rotor 3, but as shown in FIG. 22, both ends in the axial direction of the rotor 3 are provided. The parts may be provided by one cylindrical conductive member 24 such that each shell part 22 is short-circuited via a ring 23.

FIG. 23 shows a radial cross section of a reluctance type rotating electric machine to which the twenty-second embodiment of the present invention has been applied. This permanent magnet type reluctance type rotating electric machine has a stator 1 provided with a four-pole armature coil 2 and a rotor 3 housed in the stator 1 as in the first embodiment.
It is composed of

In this embodiment, a cylindrical member 25 having a structure shown in FIG. 24 made of a conductor, that is, a conductive material is fitted over the entire outer peripheral surface of the rotor 3. The cylindrical member 25 has a plurality of circumferentially long slits 25a in the rotor core body.

An induced current flows through the rotor 3. At the time of starting, the induced current at the position of the iron core body in the cylindrical member 25 passes through both ends along the direction of the slit 25 a as shown by an arrow A in FIG. Since the gas flows through a long path over the entire length in the axial direction of the rotor, magnetic coupling with the armature is strengthened, a large self-starting torque is obtained, and self-starting is facilitated.

As described above, when starting the rotating electric machine,
Since a starting torque is generated by an induced current flowing through the cylindrical member 25 in the axial direction of the rotor, the rotor 3 can be self-started, and the conductive cylindrical member 25 has a simple (simple) structure. As a result, it is easy to manufacture, and at the same time, sufficient mechanical strength is obtained. Also, the cylindrical member 25
Rotates and smoothes the outer peripheral surface, so air resistance (windage)
In order to increase the rotational efficiency.

For the cylindrical member 25, for example, aluminum-added iron, silicon-added iron, or an alloy of copper and iron can be adopted as a magnetic material having good conductivity. By setting the thickness of the cylindrical member 25 to be 1 to 4 times the skin thickness determined by the magnetic permeability and the electric conductivity, the starting torque is large, the slip at the time of synchronization is small, and the pull-in can be easily performed. According to the formation of the magnetic material in the same manner as the iron core 4,
There is no adverse effect on the magnetic flux (main magnetic flux) flowing through the magnetic pole portion 4a.

FIG. 25 shows a radial cross section of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twenty-third embodiment of the present invention. The permanent magnet type reluctance type rotating electric machine according to this embodiment is obtained by modifying the shape of the rotor core 4 in the twenty-second embodiment,
As in the second embodiment, a plurality of slits 25a are formed in the circumferential direction in the rotor core body over the entire outer peripheral surface.
A cylindrical member 25 made of a conductive material containing a hole is fitted therein, and the hollow portion 12 is
They differ in that they are formed in places.

As a result, in addition to the action of the twenty-second embodiment, the action of the high reluctance of the permanent magnet 6 and the hollow portion 12 further reduces the magnetic flux of the component along the axis between the poles. The amount of change in magnetic energy with the portion 4a further increases, and the output is improved.

FIG. 26 is a radial cross section of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twenty-fourth embodiment of the present invention. In the present embodiment, the shape of the rotor core 4 in the twenty-third embodiment is modified.
As with the embodiment shown in FIG. 18, the rotor 3 eliminates the connecting portion (bridge portion) between the magnetic poles and improves the yield at the time of removing the steel plate, and forms a substantially cross shape along the magnetic pole axis. An iron core 18 was formed. Therefore, the magnetic pole portion 1 of the iron core 18
The cylindrical member 2 has a dovetail shape at the tip and a dovetail shape formed on the inside thereof to engage with the dovetail shape.
5 was constructed outside.

This cylindrical member 25 is formed by
As in the third embodiment, the rotor core body shown in FIG.
4, a cylindrical member 7 and a cross-shaped iron core 1 made of a conductive material having a plurality of slits 25a in the circumferential direction.
A hollow portion 12 is formed in a portion surrounded by 8.

Thus, the function of the cylindrical member 25 is
This is exactly the same as that of the twenty-third embodiment, and the material yield can be improved due to the iron core 18 shape. Further, the fitting between the iron core 18 and the cylindrical member 25 is firmly fixed by the engagement between the dovetail-shaped tip and the dovetail groove, so that the mechanical strength is improved without causing a slip problem due to the high-speed rotation of the rotor. Can be done.

When a magnetic material having good conductivity is used for the cylindrical member 25, the thickness of the cylindrical member 25 is set to a value corresponding to the magnetic permeability, electric conductivity, and the like as in the twenty-second and twenty-third embodiments. By making it 1 to 4 times the skin thickness determined by
The starting torque is large, the slip at the time of synchronization is small, and the pull-in is particularly easy.

In each of the twenty-fourth to twenty-fourth embodiments, the cylindrical member 7 is formed of a conductive non-magnetic material, so that the magnetic resistance of the inter-magnetic pole portion 4b is increased, and that It may be configured to reduce the magnetic flux along.

FIG. 27 (a) shows a radial cross section of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twenty-fifth embodiment of the present invention. The rotor of this embodiment is a modification of the twenty-fourth embodiment described above. The conductor provided on the outer peripheral surface of the rotor is shown in FIG.
As shown in the figure, a plurality of slits 26 are formed in the rotor core body portion so as to be curved in the circumferential direction and to extend in the circumferential direction.
and four shell members 26 connected to the outer peripheral surface of the magnetic pole portion 4a.

As shown in FIG. 27 (a), each shell member 26 covers the inter-magnetic pole portion 4b positioned radially inward of the tip of the magnetic pole portion 4a, and engages with the dovetail-shaped and dovetail-shaped projections, respectively. It is fitted and integrated by the mating relationship. In the permanent magnet type reluctance type rotating electric machine according to the twenty-fifth embodiment, the portion 4b between the magnetic poles of the rotor is covered by the shell member 26 as a conductor. The action allows self-starting. Further, since the shell member 26 is formed so as to be continuous with the outer peripheral surface of the magnetic pole portion 4a and form the rotor 3 having a circular cross section, the outer peripheral surface is smooth, and the air resistance (windage loss) during rotation is reduced and the rotation is reduced. Efficiency can be increased.

In this embodiment, the shell member 2
6 is made of a so-called good conductive non-magnetic material such as copper and aluminum. As a result, at the time of starting, an induced current flows also in the vicinity of the outer peripheral surface of the portion 4b between the magnetic poles of the rotor 3, and the self-starting characteristic is improved. Thus, the amount of change in magnetic energy with the magnetic pole portion 4a increases, and the output improves.

FIG. 28 shows a radial cross section of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twenty-sixth embodiment of the present invention. In the rotor of this embodiment, the conductor is formed in the rotor core body in a curved manner along the circumferential direction and has a plurality of slits 26a in the circumferential direction, like the shell member 26 described above, and has a cavity. Part 12
And four shell members 261 fixed to the outer wall side.

Therefore, also in this embodiment, at the time of starting, an induced current having a long path in the circumferential direction flows through the shell member 261 located relatively outside the inter-magnetic pole portion 4b, which facilitates self-starting. Become.

FIG. 29A shows a radial cross section of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twenty-seventh embodiment, which is similar to the twenty-fifth and twenty-sixth embodiments. .

In this embodiment, the rotor core 4 itself is formed so as to have a substantially cross section by removing the portion (bridge portion) 4b between the magnetic poles of the rotor core in the rotor shown in FIG. Both ends of the magnetic pole portion 4a in the circumferential direction are formed in a hook shape so as to engage with both ends of the four conductive shell members 262 in the circumferential direction. 262 was engaged and fixed so as not to fall off from the rotor 3.

Further, in this embodiment, a conductor constituted by four conductive shell members 262 corresponds to FIG.
As shown in (b), conductive rings 262b and 262c are attached to both ends in the rotor axial direction. As a result, the rotor core 3 has a portion between the magnetic poles of the rotor 3 in the circumferential direction (axial line). Direction), a slit 262a having a long path can be formed, and at the same time, it is smoothly connected to the outer peripheral surface of the magnetic pole portion 4a.

As a result, the same effect as that of the embodiment shown in FIG. 26 is obtained for the iron core 4, and the shell member 262 is connected to the outer peripheral surface of the magnetic pole portion 4a, so that the air resistance during rotation is reduced. Rotational efficiency can be increased, and self-starting is facilitated by the flow of induced current having a long path in the shell member 262 at the time of starting.

In this embodiment, as shown in FIG. 29B, the shell members 262 are short-circuited at both ends in the axial direction of the rotor via conductive rings 262b and 262c. However, the conductive rings 262b and 262c are omitted, and the twenty-fifth and twenty-sixth conductive members are omitted.
Similarly to the embodiment, the rotor 3 may be configured as a separate body corresponding to each portion between the magnetic poles.

As described above, in the rotors of the twenty-second to twenty-seventh embodiments, the conductors provided on the outer peripheral portion of the rotor core are all arranged in the circumferential direction (axial direction) in the rotor core body. Since it has a plurality of slits and the induced current at the time of starting forms a long path in the rotor axial direction and flows, the magnetic coupling with the armature is strengthened, and a large starting torque can be obtained.

In any case, the permanent magnet type according to the present invention
The rotor of the reluctance type rotating electric machine has a simple structure in which the conductor is provided on the outer peripheral portion of the rotor core, and is capable of self-starting, so that a large practical effect can be obtained.

[0097]

As described above, according to the first aspect of the present invention, at the time of startup, an induced electromotive force is generated in the conductor provided on the outer peripheral portion of the rotor core by electromagnetic induction, and self-starting is possible. . The permanent magnets are provided at both ends in the circumferential direction of the rotor between the magnetic poles and are magnetized so as to cancel the magnetic flux of the armature passing through the magnetic poles. In this direction, the magnetic resistance increases, and the air gap magnetic flux increases. The density has irregularities, and a torque can be generated by the change in magnetic energy.

According to the second aspect of the present invention, since a plurality of conductive magnetic bars are buried near the outer peripheral surface of the magnetic pole portion of the rotor core, self-starting is possible due to the conductivity, and the bars themselves are magnetic. Since it is formed of a material, the density of the magnetic flux (number of magnetic fluxes) flowing through the magnetic pole portion does not decrease, and an effect that does not affect the torque can be obtained.

According to the third aspect of the present invention, since the hollow portion is formed in the outer core portion of the permanent magnet in the radial direction of the rotor, the magnetic circuit is interrupted here, and the magnetic resistance of the portion between the magnetic poles is reduced. It will increase further. Therefore, the amount of change in magnetic energy with the magnetic pole portion increases, and a large torque can be generated.

According to the fourth aspect of the present invention, since the conductor bar is also buried near the outer peripheral surface of the portion between the magnetic poles of the rotor core, the self-starting characteristic is further improved. Further, due to the non-magnetic characteristics, the magnetic resistance in the portion between the magnetic poles further increases, and the amount of change in magnetic energy between the magnetic poles further increases.

According to the fifth aspect of the present invention, since the nonmagnetic conductor bar is also buried in the cavity, the magnetic circuit is interrupted here, and the magnetic resistance between the magnetic poles is further increased.
Further, since the hollow portion is filled with the nonmagnetic conductor bar, the strength of the rotor itself is also improved.

According to the sixth aspect of the present invention, since the conductor bar is buried along the entire outer peripheral surface of the rotor, the startability having the same starting torque as the starting cage due to its conductivity is achieved. Achieved. In the magnetic pole portion, the conductor bar is formed of a magnetic material, and in the portion between the magnetic poles, the conductor bar is formed of a non-magnetic material. .

According to the seventh aspect of the present invention, since the non-magnetic bar of the conductor is buried only in the portion between the magnetic poles of the rotor core, the self-start is ensured by the conductivity, and the non-magnetic bar is formed. As a result, the magnetic resistance in the portion between the magnetic poles increases. Further, since the nonmagnetic bar is not embedded in the magnetic pole portion, the structure is simplified.

According to the eighth aspect of the present invention, since the conductor covers the outer peripheral surface of the rotor core,
Due to the conductivity, an induced current flows smoothly on the outer peripheral surface of the rotor, and self-starting becomes possible.

According to the ninth aspect of the present invention, since the conductor covers the entire outer peripheral surface of the rotor core, an induced current flows at the time of starting due to its conductivity, and self-starting becomes possible. In addition, since the conductor is cylindrical, the number of parts is smaller than that in which a large number of bars are embedded, so that the mechanical strength is improved and the manufacture is easy.

According to the tenth aspect of the present invention, since the conductor covers the portion between the magnetic poles of the rotor core, an induced current flows through this portion at the time of starting due to its conductivity, and self-starting becomes possible. . Further, since the conductor is continuous with the outer peripheral surface of the magnetic pole portion, windage loss of the rotor can be reduced and rotation efficiency can be increased.

According to the eleventh aspect of the present invention, since the conductor is arranged near the portion between the magnetic poles of the rotor core,
At the time of starting, induced current flows in this part due to its conductivity,
Self-starting becomes possible.

According to the twelfth aspect of the present invention, in the rotor of the permanent magnet type reluctance type rotary electric machine, the conductor provided on the outer peripheral portion of the rotor core has a plurality of slits in the circumferential direction in the rotor core body. As a result, the induced current at the time of starting forms a long path in the axial direction of the rotor and flows therethrough, and the magnetic coupling with the armature is strengthened. The torque can be obtained.

According to the thirteenth aspect of the present invention, since the conductor covers the outer peripheral surface of the rotor core, the induced current flows smoothly on the outer peripheral surface of the rotor. Self-starting is much easier. In addition, by covering the outer peripheral surface with the conductor, the air resistance (windage loss) of the rotor is reduced and the mechanical strength of the rotor is improved.

According to the fourteenth aspect, the conductor covers the entire outer peripheral surface of the rotor core.
In addition to the effect of the invention, the self-starting is further facilitated because the induced current flows over the entire outer peripheral surface of the rotor. Further, since the conductor has a cylindrical shape covering the entire outer peripheral surface of the rotor core, the mechanical strength of the rotor can be further improved with a simple configuration.

Also in the invention according to claim 15, since the conductor is constituted by a shell member connected to the outer peripheral surface of the magnetic pole portion, the air resistance of the rotor is reduced in addition to the effect described in claim 13. Rotation efficiency can be increased.

According to the sixteenth aspect of the present invention, since the curved conductor is disposed near the outer peripheral surface of the portion between the magnetic poles of the rotor core, an induced current flows through the conductor at the time of starting. In the same manner as in the invention described above, self-starting is enabled.

According to the seventeenth aspect, the conductor covering at least the outer peripheral surface of the rotor core is made of a conductive magnetic material. Since a large main magnetic flux is obtained and slip during synchronous pull-in is reduced, it is possible to start and pull-in a load requiring a larger torque.

[Brief description of the drawings]

FIG. 1 is a radial sectional view of a permanent magnet type reluctance type rotary electric machine to which a first embodiment of the present invention is applied.

FIG. 2 is a perspective view of a permanent magnet type remote controller according to a second embodiment of the present invention;
FIG. 2 is a radial cross-sectional view of a rotor of a lactance type rotating electric machine.

FIG. 3 is a perspective view of a permanent magnet type remote controller according to a third embodiment of the present invention;
FIG. 2 is a radial cross-sectional view of a rotor of a lactance type rotating electric machine.

FIG. 4 is a perspective view of a permanent magnet type remote controller according to a fourth embodiment of the present invention.
FIG. 2 is a radial cross-sectional view of a rotor of a lactance type rotating electric machine.

FIG. 5 is a perspective view of a permanent magnet type remote controller according to a fifth embodiment of the present invention.
FIG. 2 is a radial cross-sectional view of a rotor of a lactance type rotating electric machine.

FIG. 6 shows a permanent magnet type remote controller according to a sixth embodiment of the present invention.
FIG. 2 is a radial cross-sectional view of a rotor of a lactance type rotating electric machine.

FIG. 7 is a perspective view of a permanent magnet type remote controller according to a seventh embodiment of the present invention.
FIG. 2 is a radial cross-sectional view of a rotor of a lactance type rotating electric machine.

FIG. 8 shows a permanent magnet type refill according to an eighth embodiment of the present invention.
FIG. 2 is a radial cross-sectional view of a rotor of a lactance type rotating electric machine.

FIG. 9 is a perspective view of a permanent magnet type remote controller according to a ninth embodiment of the present invention;
FIG. 2 is a radial cross-sectional view of a rotor of a lactance type rotating electric machine.

FIG. 10 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a tenth embodiment of the present invention.

FIG. 11 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotary electric machine according to an eleventh embodiment of the present invention.

FIG. 12 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twelfth embodiment of the present invention.

FIG. 13 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a thirteenth embodiment of the present invention.

FIG. 14 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a fourteenth embodiment of the present invention.

FIG. 15 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotary electric machine according to a fifteenth embodiment of the present invention.

FIG. 16 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a sixteenth embodiment of the present invention.

FIG. 17 is a radial cross-sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a seventeenth embodiment of the present invention.

FIG. 18 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to an eighteenth embodiment of the present invention.

FIG. 19 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a nineteenth embodiment of the present invention.

FIG. 20 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a twentieth embodiment of the present invention.

FIG. 21 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twenty-first embodiment of the present invention.

FIG. 22 is a perspective view showing a cylindrical conductive member used for the rotor of FIG. 21;

FIG. 23 is a radial sectional view of a permanent magnet type reluctance type rotary electric machine to which a twenty-second embodiment of the rotor of the permanent magnet type reluctance type rotary electric machine according to the present invention is applied.

24 is a perspective view showing a cylindrical member (conductor) of the rotor shown in FIG.

FIG. 25 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a twenty-third embodiment of the present invention.

FIG. 26 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twenty-fourth embodiment of the present invention.

FIG. 27 (a) is a radial sectional view of a rotor of a permanent magnet type reluctance type rotary electric machine according to a twenty-fifth embodiment of the present invention, and FIG. 27 (b) is a shell member of FIG. 27 (a). It is a perspective view which shows (conductor).

FIG. 28 is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a twenty-sixth embodiment of the present invention.

29 (a) is a radial sectional view of a rotor of a permanent magnet type reluctance type rotating electric machine according to a twenty-seventh embodiment of the present invention, and FIG. 29 (b) is shown in FIG. 29 (a). It is a perspective view of the conductor comprised by the shell member.

Continued on the front page (72) Inventor Mikio Takahata 2-4, Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside Keihin Works, Toshiba Corporation (72) Inventor Yoshio Hashidate 2-4-2, Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa (56) References JP-A-52-13605 (JP, A) JP-A-5-22916 (JP, A) JP-A-10-257702 (JP, A) US Patent 4,924,130 (US, a) United States Patent 4476408 (US, a) United States Patent 4139790 (US, a) United States Patent 3465181 (US, a) (58 ) investigated the field (Int.Cl. ^7, DB name) H02K 19/10 H02K 1/27 501 H02K 21 / 00,29 / 00

Claims (17)

(57) [Claims] 1. A rotor core to form a magnetically uneven portion, along Ikatsu radially outwardly respective pole axes of the rotor core
In the rotor of the permanent-magnet reluctance electrical rotary machine having a permanent magnet is disposed leaving a peripheral portion of the iron core, the permanent magnet is provided on the rotor circumferentially opposite ends of each inter-pole portion and pole together are magnetized so as to cancel the magnetic flux of the armature passing between portions, the rotor on the outer peripheral portion of the iron core, the permanent magnet type Li, wherein a conductor for generating the induced current is provided
A rotor of a lactance type rotating electric machine. 2. The permanent magnet according to claim 1, wherein the conductor is constituted by a plurality of magnetic bars embedded near an outer peripheral surface of a magnetic pole portion of the rotor core and extending in an axial direction of the rotor. Rotor of magnet type reluctance type rotating electric machine. 3. The rotor of a permanent magnet type reluctance type rotating electric machine according to claim 2, wherein a cavity is formed in an iron core portion of the permanent magnet on a radially outer side of the rotor. 4. The non-magnetic conductor bar, which extends in the axial direction of the rotor and generates an induced current, is buried in the vicinity of the outer peripheral surface of the portion between the magnetic poles of the rotor core. Rotor of permanent magnet type reluctance type rotary electric machine. 5. The permanent magnet reluctance according to claim 4, wherein a non-magnetic conductor bar extending in the axial direction of the rotor and generating an induced current is embedded in the hollow portion.
Type electric rotating machine. 6. A plurality of deep-groove magnetic bars buried near the outer peripheral surface of a magnetic pole portion of the rotor core and extending in the axial direction of the rotor, and near an outer peripheral surface of a portion between the magnetic poles of the rotor core. 2. The rotor of the permanent magnet type reluctance type rotating electric machine according to claim 1, comprising: a plurality of non-magnetic bars embedded in the rotor and extending in the rotor axis direction. 3. 7. The rotor according to claim 1, wherein the conductor comprises a plurality of non-magnetic bars buried in the vicinity of the outer peripheral surface of the portion between the magnetic poles of the rotor core and extending in the axial direction of the rotor.
The rotor of the permanent-magnet-type reluctance-type rotary electric machine according to Claim 1. 8. The rotor for a permanent magnet type reluctance type rotating electric machine according to claim 1, wherein the conductor is formed so as to cover an outer peripheral surface of the rotor core. 9. The rotor according to claim 8, wherein the conductor covers the entire outer peripheral surface of the rotor core and is formed in a cylindrical shape.
The rotor of the permanent-magnet-type reluctance-type rotary electric machine according to Claim 1. 10. The permanent magnet according to claim 8, wherein the conductor is composed of a plurality of shell members connected to an outer peripheral surface of a magnetic pole portion of the rotor core and covering a portion between the magnetic poles. Rotor of reluctance type rotary electric machine. 11. The permanent magnet according to claim 1, wherein the conductor is disposed near an outer peripheral surface of a portion between the magnetic poles of the rotor core, and is curved along a circumferential direction of the rotor. Rotor of reluctance type rotary electric machine. 12. The rotor for a permanent magnet type reluctance type rotating electric machine according to claim 1, wherein the conductor has a plurality of slits in a circumferential direction in a rotor core body. 13. The rotor according to claim 1, wherein the conductor is formed so as to cover an outer peripheral surface of the rotor core.
3. The rotor of the permanent magnet type reluctance type rotating electric machine according to 2. 14. The rotor for a permanent magnet type reluctance type rotating electric machine according to claim 13, wherein the conductor covers the entire outer peripheral surface of the rotor core and is formed in a cylindrical shape. 15. The rotor according to claim 13, wherein the conductor is formed of a plurality of shell members connected to an outer peripheral surface of a magnetic pole portion of the rotor core and covering a portion between the magnetic poles.
The rotor of the permanent-magnet-type reluctance-type rotary electric machine according to Claim 1. 16. The permanent magnet according to claim 12, wherein the conductor is disposed near an outer peripheral surface of a portion between the magnetic poles of the rotor core, and is formed to be curved along a circumferential direction of the rotor. Rotor of magnet type reluctance type rotating electric machine. 17. The rotor of a permanent magnet type reluctance type rotating electric machine according to claim 13, wherein the conductor is made of a conductive magnetic material.