JP2005130689A - Rotating electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotating electric machine that improves its efficiency, performance, and output by using permanent magnets effectively, and that is miniaturized in the arrangement of permanent magnets used for a rotor in a rotating electric machine and in a method of using the magnets practically. <P>SOLUTION: To achieve the above purpose, the permanent magnets are arranged radially and annularly on a rotor, and the magnetic flux of the magnets arranged radially is made almost twice as large as the main magnetic flux of the magnets arranged annularly. In the rotating surface of the rotor, the permanent magnets of submagnetic flux are provided, the shape of grooves are adjusted, the width for adjusting grooves is provided and so forth in the shape of magnetic poles comprising the ferromagnetic material of the rotor, in such a way that magnetic flux distribution based on all the permanent magnets of each magnetic pole of the rotor becomes almost sinusoidal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a magnetic pole structure for improving performance and efficiency in an electric motor or generator as a rotating electric machine or a mobile electric machine using a magnet.

Recent synchronous motors are widely used as permanent magnet type synchronous motors in which permanent magnets are embedded in the rotor from the viewpoint of constant speed operation and efficiency.
In particular, the progress of high performance and miniaturization is remarkable due to the development of rare earth materials for permanent magnets.
However, the utilization method of the permanent magnet has not been sufficient yet for higher efficiency, higher performance, and higher output. The situation is similar for permanent magnet generators.

For example, there is a magnetic motor and a generator disclosed in Patent Document 1. In this patent, in motors and generators, magnets are used in a radial arrangement. Furthermore, in order to improve performance, the axial length of the rotor into which the magnet is inserted is made larger than the axial length of the stator with the winding, so that the magnetic flux in the gap between the stator and the rotor can be increased. I have to.
Another example is the electric motor of Patent Document 2. In this patent, in an electric motor, the arrangement of magnets is used in a ring shape. A rotor including a plurality of permanent magnet portions is provided, and the outer periphery of the rotor is characterized in that a concave portion is provided in a portion adjacent to the end portion of the permanent magnet portion. The gap between the inner periphery of the stator and the outer periphery of the rotor becomes large at the portion where the permanent magnets are adjacent. That is, as the magnetic resistance in the gap increases, the magnetic flux distribution between the stator inner periphery and the rotor outer periphery approaches a sine wave, and the cogging torque is reduced.
Patent Document 3 is another example.

  The present invention relates to a synchronous motor having a structure in which a permanent magnet is embedded in a rotor, and in order to provide a rotor structure capable of reducing cogging torque without skewing the rotor, a permanent motor disposed inside the rotor. Cogging by arranging the angle formed by the rotor surface position where the magnetic pole of the magnet switches from N to S or from N to S from the center of the rotor at non-uniform intervals for each permanent magnet arranged at each position. The torque is to be reduced. In this case, generally, there are many methods, and the permanent magnets are arranged in a ring shape around the rotor. However, high efficiency, high performance, and high output are still insufficient.

JP 2000-156947 A JP2002-238193 JP 2002-118994 A

  The present invention has been made to solve the above-described problems, and in the arrangement of permanent magnets used in a rotor in a rotating electrical machine and a method for utilizing the permanent magnets, the efficiency can be improved by effectively using the permanent magnets. An object of the present invention is to provide a rotating electrical machine that can drastically improve performance and output and can be miniaturized.

In order to achieve the above object, the present invention will be described in order of means for solving problems.
According to a first aspect of the present invention, in a rotating electrical machine using a magnet, a radial magnet is provided to insert a magnet in the rotor, and a part of the magnetic pole shape of the rotor is set to the magnetic pole of the stator. Thus, the present invention is characterized in that an asymmetric shape up to a position corresponding not only to the same polarity (or different polarity) but also to the different polarity (or same polarity) is provided.

  According to a second aspect of the present invention, in the rotating electrical machine using the magnet, the magnetic pole shape of the rotor made of the magnet is not angularly divided, but the angle pitch is changed, so that the relative magnetic pole shape of the stator made of electromagnetic coupling is relatively When the angular position is deviated and the magnet in the rotor is inserted, a radial magnet and a ring-shaped magnet are provided, and the magnetic flux of the ring-shaped magnet of the rotor is directly applied to the magnet of the rotor. A gap or a non-magnetic part is provided around the magnet so as not to return, and the magnetic flux in the gap between the rotor and the stator is increased.

  According to a third aspect of the present invention, in a rotating electrical machine using a magnet, a radial magnet and a ring-shaped magnet are provided to insert a magnet in the rotor, and a part of the magnetic pole shape of the rotor is The magnetic pole of the stator consisting of electromagnetic coupling is configured to have an asymmetric shape up to a position corresponding not only to the same polarity (or different polarity) but also to the opposite polarity (or same polarity). It is characterized by.

  According to a fourth aspect of the present invention, in a rotating electrical machine using a magnet, when inserting a magnet in a rotor made of a magnet, a rotor made of a magnet having a portion longer than the axial length of a stator made of an iron core by electromagnetic coupling. In the protruding part, the inner part of the radial magnet and the ring-shaped magnet facing each other has the same polarity, and in the part where the rotor consisting of the magnet of the part shorter than the axial length of the stator consisting of the iron core by electromagnetic coupling does not protrude Is characterized in that the inner sides of the radial magnet and the ring-shaped magnet are different from each other.

  According to a fifth aspect of the present invention, in a rotating electric machine using magnets, the stator includes magnetic poles made of a ferromagnetic material and armature windings. In the rotor, permanent magnets are arranged radially and in a ring shape, and the permanent arrangement of the radial arrangement is achieved. The magnetic flux of the magnet is almost doubled relative to the magnetic flux of the permanent magnets arranged in a ring shape, and the magnetic flux distribution based on all permanent magnets for each magnetic pole of the rotor is substantially sinusoidal on the rotating surface of the rotor. In the magnetic pole shape made of the ferromagnetic material of the rotor, the groove shape is adjusted, and the width of the adjusting groove is provided.

  According to a sixth aspect of the present invention, in a rotating electrical machine using magnets, the stator includes a magnetic pole made of a ferromagnetic material and an armature winding. In the rotor, permanent magnets are arranged radially and in a ring shape, and the permanent arrangement of the radial arrangement is achieved. The magnetic flux of the magnet is almost doubled with respect to the main magnetic flux of the ring-shaped permanent magnet, and a secondary magnet is provided for the permanent magnet of the ring-shaped main magnetic flux. The adjustment of the groove shape and the width of the adjustment groove are provided in the magnetic pole shape made of the ferromagnetic material of the rotor so that the magnetic flux distribution based on all the permanent magnets for each magnetic pole of the rotor is almost sinusoidal. It is characterized by.

  According to a seventh aspect of the present invention, in the radial arrangement of the permanent magnets of the rotors according to the fifth and sixth aspects of the present invention, a magnetic flux leakage prevention groove is provided on the rotating shaft side, and the rotating shaft is made of a nonmagnetic material.

  According to an eighth aspect of the present invention, in the fifth, sixth, and seventh aspects of the present invention, the interval between each magnetic pole of the rotor is at least an interval between the one magnetic pole and the other magnetic pole.

  According to a ninth aspect of the present invention, in a rotating electrical machine using magnets, the iron core holding the permanent magnet of the rotor is replaced with a non-magnetic material rather than iron so that the magnetic flux between the magnets can be applied to a device with a large capacity. It is characterized by preventing leakage.

  In a tenth aspect of the present invention, in a rotating electrical machine using magnets, the iron core portion holding the permanent magnet of the rotor is replaced with a non-magnetic material that is lighter than iron, so that it can be applied to a device having a large capacity. It is characterized by preventing magnetic flux leakage and reducing the weight of the rotor.

  In an eleventh aspect of the present invention, in the ninth and tenth aspects of the present invention, the iron core portion holding the permanent magnet of the rotor is replaced with a conductive nonmagnetic material from iron to prevent leakage of magnetic flux between the magnets, and to a device with a large capacity. It can be applied, and it can be self-started.

  According to a twelfth aspect of the present invention, in a rotating electrical machine using a magnet, a slot for mounting a magnet is provided on the outer peripheral portion of the iron core holding the radial magnet of the rotor, and the magnetic field of the magnet is formed in the radial direction. It is characterized in that a driving force is additionally applied in the rotation or movement direction in a synchronous rotation state between the stator magnetic flux and the stator magnetic flux.

  In a thirteenth aspect of the present invention, the permanent magnet of the rotor in the present invention 1, 2, 3, 5, 6, 7, 8, 9, 10, 11 and 12 is replaced with a superconducting electromagnetic coil or the like. It is characterized by its expanded application to mobile devices such as linear motors.

  In a fourteenth aspect of the present invention, in the first, third, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth and thirteenth aspects, the radiation or the magnet of the ring-shaped magnet portion is partially removed, or the magnetic force of the magnet is It is possible to further improve the characteristics by adjusting the magnetic field of the asymmetrical magnetic pole portion provided in the rotor.

  As an effect of the present invention, according to a first aspect of the present invention, in a rotating electrical machine using a magnet, a radial magnet is provided to insert a magnet in the rotor, and a part of the magnetic pole shape of the rotor is wound. The magnetic pole of the stator consisting of electromagnetic couplings with an asymmetrical shape that overlaps not only to the same polarity (or different polarity) but also to the position corresponding to the different polarity (or same polarity) As a result, when the stator and rotor have the same polarity (or different polarity), there is a repulsion (retraction) action, and the adjacent stator and rotor are at the same time part of the different polarity. There is a retraction (repulsion) action at the position, the connection by the relative action of the stator and the rotor is improved, the performance of the rotating electrical machine is improved, the torque cogging phenomenon is reduced, and the vibration is suppressed.

  According to a second aspect of the present invention, in a rotating electrical machine using a magnet, the magnetic pole shape of the rotor made of the magnet is not angularly arranged, but is changed relative to the magnetic pole of the stator made of electromagnetic coupling by changing the angle pitch. In order to insert a magnet in the rotor, a radial magnet and a ring-shaped magnet are provided, and the magnetic flux of the ring-shaped magnet of the rotor is directly applied to the magnet of the rotor. A gap or non-magnetic part is provided around the magnet so that it does not return, increasing the magnetic flux in the gap between the rotor and stator, and reducing leakage of magnetic flux in the magnet, thereby improving the performance of the rotating electrical machine. This reduces the torque cogging phenomenon and suppresses vibration.

  According to a third aspect of the present invention, in a rotating electrical machine using a magnet, a radial magnet and a ring-shaped magnet are provided to insert a magnet in the rotor, and a part of the magnetic pole shape of the rotor is electromagnetic By providing an asymmetrical shape up to the position corresponding to the different polarity (or the same polarity) as well as corresponding to the same polarity (or a different polarity) relative to the magnetic pole of the stator consisting of mechanical coupling, the stator When the rotor and the rotor have the same polarity (or different polarity), there is a repulsion (retraction) action, and at the same time, the adjacent stator and rotor have a retraction (repulsion) action at a part of the different polarity. Therefore, the connection by the relative action of the stator and the rotor is improved, the performance of the rotating electrical machine is greatly improved, the torque cogging phenomenon is reduced, and the vibration is suppressed.

According to a fourth aspect of the present invention, in a rotating electrical machine using a magnet, when inserting a magnet in a rotor made of a magnet, a rotor made of a magnet having a portion longer than the axial length of a stator made of an iron core by electromagnetic coupling. In the “protruding part”, the opposite insides of the radial magnet and the ring-shaped magnet have the same polarity,
In the "non-extrusion part" of the rotor consisting of the magnet part shorter than the axial length of the stator consisting of the iron core by electromagnetic coupling, the inside opposite to each other between the radial magnet and the ring-shaped magnet is a different polarity. By adopting a configuration, it is possible to significantly increase the magnetic flux in the gap between the rotor and stator, greatly improve the performance of the rotating electrical machine, reduce the torque cogging phenomenon, and suppress vibrations. A greater effect can be obtained.

  According to a fifth aspect of the present invention, as a permanent magnet type rotating electric machine, in a rotor, permanent magnets are arranged in a ring shape and a radial shape in a narrow space, and the magnetic flux of the permanent magnets in the radial configuration is changed to the magnetic flux of the permanent magnets in the ring shape. Therefore, the magnetic flux at each magnetic pole can be greatly increased. In order to reduce the harmonic component on the rotating surface and bring it closer to a sinusoidal wave, the magnetic flux is large on the center line of the magnetic pole and approaches the boundary of the magnetic pole. As a generator in a small rotating electrical machine, with a high output of several kilowatts, by adjusting the magnetic flux distribution by making the shape of the groove into a fan shape in advance with a magnetometer, and by providing a width of the adjustment groove, An efficiency of 95% or more is obtained.

  According to a sixth aspect of the present invention, as a permanent magnet type rotating electric machine, in a rotor, permanent magnets are arranged in a ring shape and a radial shape in a narrow space, and the magnetic flux of the permanent magnets arranged in a radial manner is used as a main magnet of the permanent magnets in the ring shape. The magnetic flux at each magnetic pole can be greatly increased by providing a secondary magnetic permanent magnet with respect to the main magnetic permanent magnet arranged in a ring shape in a configuration almost double the magnetic flux. Furthermore, in order to reduce the harmonic component on the rotating surface and approximate the sine wave in the magnetic flux distribution waveform in each magnetic pole, the magnetic flux is large on the magnetic pole center line in the magnetic pole shape made of the ferromagnetic material of the rotor, and the boundary between the magnetic poles By adjusting the magnetic flux distribution by making the magnetic flux amount of the permanent magnet of the secondary magnetic flux and the groove shape into a fan shape, and providing the width of the adjustment groove with a magnetometer in advance, As a generator, a high output of several kilowatts and an efficiency of 95 to 97% are obtained.

  According to a seventh aspect of the present invention, in the radial arrangement of the permanent magnets of the rotor described above, a magnetic flux leakage prevention groove is provided on the rotating shaft side, and the rotating shaft is made of a nonmagnetic material. It can be used more effectively. As a generator in a small rotating electric machine, high efficiency of 95 to 98% is obtained with a high output of several kilowatts.

  According to an eighth aspect of the present invention, there is provided a permanent magnet type rotating electrical machine having the above-described effect, wherein at least one of the magnetic poles and the other magnetic poles are arranged at unequal intervals. The cocking torque can be prevented. As a matter of course, the magnetic pole deviation (skew) may be used in combination between each set of each row.

  According to a ninth aspect of the present invention, in a rotating electrical machine using magnets, the iron core holding the permanent magnet of the rotor is replaced with a nonmagnetic material from iron to prevent leakage of magnetic flux between the magnets as the size of the rotor increases. Therefore, it can be applied to a device having a large capacity.

  In a tenth aspect of the present invention, in a rotating electrical machine using a magnet, the iron core holding the permanent magnet of the rotor is replaced with a nonmagnetic material that is lighter than iron, so that the magnetic flux between the magnets can be applied to a device with a large capacity. Leakage can be prevented, the weight of the rotor can be reduced, and the weight of the shaft and the loss of the bearing can be reduced.

  The eleventh invention replaces the iron core holding the permanent magnet of the rotor with a conductive non-magnetic material that is lighter than iron, and prevents leakage of magnetic flux between the magnets so that it can be applied to equipment with a large capacity, It is possible to reduce the weight of the rotor and to enable self-starting during induction startup.

  According to a twelfth aspect of the present invention, in a rotating electrical machine using a magnet, a slot for mounting a magnet is provided on the outer peripheral portion of the iron core holding the radial magnet of the rotor, and the magnetic field of the magnet is formed in the radial direction. It is possible to always generate attraction and repulsion force between the stator magnetic flux and the stator magnetic force in the synchronous rotation state, and to additionally apply the driving force in the rotation direction.

  According to the thirteenth aspect, the permanent magnet of the rotor is composed of an electromagnet such as a superconductor, so that the application can be expanded to a mobile device such as a higher-power, high-efficiency rotating electric machine linear motor.

  According to a fourteenth aspect, in the above-mentioned invention, the magnetic field of the asymmetrical magnetic pole portion provided in the rotor is reduced by removing a part of the radiation or the magnet of the ring-shaped magnet portion or adjusting the magnetic force of the magnet. It is possible to further improve the characteristics by adjusting.

  Examples of the present invention will be described below.

The rotating electrical machine 1 of Example 1, Example 2, Example 3, and Example 4 of this invention is shown simultaneously in FIG. 21, 22, 23, and 24 are rotors, 3 is a stator, 15 is a rotation shaft, and 16 is a winding.
A first embodiment of the present invention is shown in FIG. Reference numeral 21 denotes a rotor, 41 denotes an iron core magnetic pole made of an electromagnetic steel plate of the rotor 21, and 5 denotes a magnet of the rotor 21. The magnetic pole 41 has a shape in which the magnets 5 are arranged radially. 6 indicates a groove, and 7 indicates a mounting hole.
For reference, FIG. 3 shows an example of the shape of a conventional rotor provided with magnets radially.
In the shape in which the magnets 5 are arranged radially on the magnetic pole 41 of the rotor 21, a part 8 of the shape of the magnetic pole 41 of the rotor 21 is provided with a “projection shape” asymmetrically. Conventionally, it has a target shape as shown in FIG. Further, the rotor 21 can be overlapped by being inverted through the mounting hole 7 of the rotor 21. Therefore, the angle of the magnetic pole 41 of the rotor 21 is substantially further expanded. As a result, the magnetic poles of the stator 3 have not only relatively corresponding to the same pole (or different pole) but also a position corresponding to the different pole (or same pole).
When the rotating electrical machine 1 is in the generator action or the motor action, the stator 3 and the rotor 21 have a repulsion (retraction) action when the same polarity (or different polarity) is the main position. The rotor 21 has a retraction (repulsion) action at a part of the position opposite to the rotor 21, and the connection by the relative action between the stator 3 and the rotor 21 is improved. It is possible to improve the performance of the rotating electrical machine 1, reduce the cogging phenomenon of torque, and obtain the effect of suppressing vibration.

A second embodiment of the present invention is shown in FIG. Reference numeral 22 denotes a rotor, 42 denotes an iron core magnetic pole made of an electromagnetic steel plate of the rotor 22, and 5 denotes a magnet of the rotor 22. Furthermore, the magnetic pole 42 has a shape in which the magnets 5 are arranged radially and a shape in which the magnets 9 are arranged in a ring shape, and grooves 10 and 11 are provided in the magnetic pole 42. For reference, FIG. 5 shows the shape of a conventional rotor provided with magnets radially.
The ring-shaped magnet 9 of the rotor 22 is provided with a gap or a non-magnetic part in the grooves 10 and 11 around the magnet 9 so that the magnetic flux does not directly return to the magnet 9 of the rotor 22. With this configuration, the magnetic flux in the gap between the rotor 22 and the stator 3 is greatly increased.

Furthermore, the magnet 5 is installed facing the adjacent magnet with the same polarity. When the magnetic pole 5 of the rotor 21 is, for example, 6 poles, the poles are not equally arranged at an angle of 60 degrees, but the 5 poles have an angle pitch of 60 degrees × (170 to 176) / 180 one pole at a time. The remaining one pole is arranged as 60 degrees + 5 degrees × (170-176) / 180. The magnetic pole of one stator 3 is equally divided into 60 degrees in the case of this 6 poles. Therefore, the position is relatively displaced with respect to the magnetic poles of the stator 3 made of electromagnetic coupling.
By adopting such a configuration, the performance of the rotating electrical machine 1 can be greatly improved, and torque cocking can be further suppressed to reduce vibration and the like.

  In addition, a radial slot for inserting the magnet 5 is provided in the magnetic poles 41 and 42 of each magnetic core so that the length of the magnet 5 can be adjusted in the radial direction so that the magnet 5 can be adjusted in length in the radial direction. In addition, since a radial slot for inserting the magnet 5 is provided, a strong magnet or a full slot magnet is used particularly when the magnetic flux is strengthened. In addition, by making the magnets 5 and 9 detachable, it is possible to easily change or adjust the characteristics of the electric motor or the generator.

A third embodiment of the present invention is shown in FIG. Reference numeral 23 denotes a rotor, and 43 denotes an iron core magnetic pole made of an electromagnetic steel plate of the rotor 23.
The magnet 5 is arranged radially on the magnetic pole 43 of the rotor 23, a part 6 of the shape of the magnetic pole 43 is provided, and the magnet 9 is arranged in a ring shape, and a gap is formed in the grooves 10 and 11 around the magnet 9. Alternatively, a non-magnetic part is provided.
This configuration is a combination of both the first and second embodiments.
Therefore, the synergistic effect of both is demonstrated by the characteristic of both.
Therefore, the magnetic flux in the gap between the rotor 23 and the stator 3 is greatly increased, and the coupling between the magnetic poles of the rotor 23 and the stator 3 is deviated and partially overlapped with the “projection shape” 8. Thus, the performance of the rotating electrical machine 1 is greatly improved, torque cogging is suppressed, and vibration is reduced.

A fourth embodiment of the present invention is shown in FIGS. 1 is a rotating electrical machine, 24, 24a and 24b are rotors, 3 is a stator, and 44 is a magnetic pole of an iron core made of electromagnetic steel plates of the rotors 24a and 24b. In the rotating electrical machine 1, when inserting the magnets 5, 9 in the rotor 24 composed of the magnets 5, 9, the magnets 5 that are longer than the axial length of the stator 3 made of an iron core by electromagnetic coupling of the windings 16, In the "protruding portion" 24a of the rotor 24 composed of 9, the inner portions of the radial magnet 5 and the ring-shaped magnet 9 that are opposite to each other have the same polarity and are shorter than the axial length of the stator 3 made of an iron core by electromagnetic coupling The “part that does not protrude” 24 b of the rotor 24 composed of the magnets 5, 9 has a configuration in which the inner sides of the radial magnet 5 and the ring-shaped magnet 9 are different from each other. With this configuration, the magnetic flux of the “protruding portion” 24a of the rotor 24 is in the direction of the arrow, and the magnetic flux of the “non-extending portion” 24b of the rotor 24 is in the direction of the arrow. Therefore, the magnetic flux of the “protruding portion” 24 a of the rotor 24 and the magnetic flux of the “non-extruding portion” 24 b are superimposed. As a result of this configuration, the magnetic flux in the gap between the rotor 24 and the stator 3 can be increased substantially in proportion to the length of the “protruding portion” 24a, and the performance of the rotating electrical machine 1 can be greatly improved. Even greater effects can be achieved by reducing the torque cogging phenomenon and suppressing vibration.
As a result, the rotating electrical machine 1 has a high efficiency of 95 to 98% even with a small electric motor. Further, in the case of the rotating electric machine 1 having the same output capacity, the size can be further reduced as compared with the conventional case.
As another specific configuration of the present invention, FIGS. 9, 10, 11, 12, and 13 are sectional views of rotating electric machines.
101 , 101 ′ , 102 , 102 ′ are permanent magnet type rotating electric machines according to the present invention, 102 is a stator, 103 is a rotor, and the stator 102 includes an armature winding 104 and a stator magnetic pole core 105. ing. As the rotor 103, permanent magnets for each magnetic pole are arranged in a combination of 171, 172, and 173 in the rotor magnetic pole core 106 in a radial and ring shape. Reference numeral 108 denotes a partition / assembly plate as each phase of each permanent magnet. FIG. 9 shows the configuration of the rotor 103 in three rows and three sets.
Reference numeral 112 denotes a rotary shaft, 113 denotes a rotary bearing, and 114 denotes a housing.

  10 and 11, each rotor 103 is configured such that the magnetic flux of the radially arranged permanent magnet 171 in the rotor magnetic pole core 106 is approximately double the magnetic flux of the ring-shaped arranged permanent magnet 172.

In addition, on the rotation surfaces of the magnetic poles of the stator 102 and the rotor 103, the magnetic fluxes of the permanent magnets 171 in the radial arrangement and the magnetic poles of the permanent magnets 172 in the ring arrangement provided on the rotor 3 are pre- By using the gauges, the fan-shaped shapes a and b of the groove 109 and the width c of the adjusting groove 110 are provided, thereby making it possible to adjust the processing of the magnetic flux distribution.
With such a configuration, the distribution waveform of the magnetic flux in each magnetic pole can be made to approximate a sine wave by reducing the harmonic component on the rotation surface.

In addition, on the rotating surfaces of the magnetic poles of the stator 102 and the rotor 103, the magnetic flux of the radially arranged permanent magnets 171 and the permanent magnet 172 of the main magnetic flux arranged in the ring shape and the permanent magnet 173 of the secondary magnetic flux provided on the rotor 103. The magnetic flux distribution can be adjusted by providing a magnetic flux amount according to the sector shapes a and b of the groove 109, the size of the permanent magnet 173 of the secondary magnetic flux, and the like by using a magnetometer in advance.
With such a configuration, the amount of magnetic flux can be strengthened, and the distribution waveform of the magnetic flux in each magnetic pole can be reduced to a harmonic component on the rotating surface, and can be made nearly sine wave.

  Further, in order to prevent magnetic flux leakage from the rotating shaft side of the magnetic flux of the radially arranged permanent magnets 171 provided on the rotor 103, a magnetic flux leakage prevention groove 111 is provided, and the rotating shaft 112 is a non-ferromagnetic material. Such a configuration effectively contributes to the magnetic flux to the rotating surface.

  Further, in the interval of each magnetic pole in the rotor 103, for example, FIG. 10 and FIG. 11 are composed of 4 poles, the angle between the 3 poles is 88 degrees, and the other 1 pole is 96 degrees. It is easy to set the degree (not shown). The cocking torque of the rotor can be prevented by making the interval between at least one magnetic pole and the other magnetic pole unequal with such a configuration. As a matter of course, the magnetic pole deviation (skew) may be used in combination between each set of each row.

  As described above, according to the configuration of the present invention, high efficiency of 95 to 98% is obtained at a high output of several kilowatts as a generator in the small rotating electric machines 101 and 101 '.

Further, in the small rotating electric machine 102, a slot is newly provided in the outer peripheral portion of the magnet 171 inserted as a generator in the radial slot of the rotor core 106 of the rotor 105 of the present invention, and the magnetic field direction of the magnet 174 is radiated. When the rotor is rotated at a synchronous speed, repulsion and attractive force are always generated between the magnetic pole formed by the stator and the magnet 174, and a driving force is always generated during the rotation. In this way, the output is increased and the efficiency is improved.
Further, in the small rotating electric machine 102 ′, the rotor core 106 of the rotor 105 of the present invention is constituted by the non-magnetic body 120 and the conductive non-magnetic body 121 as a generator, thereby further increasing the output, efficiency and induction starting. A possible rotating electric machine can be obtained.

  Further, by configuring the permanent magnets 171, 172, 173, and 174 of the rotor 103 of the present invention with electromagnets such as superconductivity, it is possible to provide a rotating machine with higher output and higher efficiency.

  As examples of use of the present invention, medical equipment such as general industrial equipment, household electric equipment, automobile / vehicle equipment, electric equipment such as wind power / hydraulic power / thermal power, and the like can be used very widely.

Rotating electric machine according to Embodiment 1 of the present invention The figure of the rotor 21 of Example 1 of this invention Illustration of a conventional rotor example The figure of the rotor 22 of Example 2 of this invention Illustration of another example of a conventional rotor The figure of the rotor 23 of Example 3 of this invention The magnetic flux of the rotors 24a and 24b and the magnetic flux of the stator 3 according to the fourth embodiment of the present invention. The figure of the rotor 24a of Example 4 of this invention Sectional drawing of the rotary electric machine of Example 5 of this invention Sectional drawing of the rotary electric machine of Example 6 of this invention Sectional drawing of the rotary electric machine of Example 7 of this invention Sectional drawing of the rotary electric machine which used the magnet for raising driving force in Example 8 of this invention Sectional drawing of the rotary electric machine which used the nonmagnetic material instead of the iron core of the rotor of Example 8 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 101, 101 ', 102, 102': Rotary electric machine 21, 22, 23, 24, 24a, 24b, 103: Rotor 3, 102: Stator 41, 42, 43, 44: Magnetic pole 5, 171, 172 173, 174: Magnet 6: Groove 7: Mounting hole 8: Protrusion shape 9: Magnet 10: Groove 11: Air gap, non-magnetic material 16, 104: Armature winding of stator 105: Stator magnetic pole core 106: Rotation Child magnetic core 108: Rotor partition and assembly plate 109: Groove (fan-shaped)
110: Adjustment groove 111: Magnetic flux leakage prevention groove 15, 112: Rotating shaft 113: Rotating bearing 114: Housing 120, 121: Non-magnetic magnet holder N, S: Polarity of magnet

Claims (14)

  In a rotating electrical machine using magnets, a radial magnet is provided to insert a magnet in the rotor, and a part of the magnetic pole shape of the rotor is relatively the same as the magnetic pole of the stator. A rotating electrical machine characterized by having an asymmetric shape up to a position corresponding to a different pole (or the same pole) as well as corresponding to a pole (or a different pole).   In a rotating electric machine using magnets, the magnetic pole shape of the rotor made of magnets is not angularly divided, but the angular pitch is changed to shift the angular position relative to the magnetic poles of the stator made of electromagnetic coupling. When inserting the magnet in the rotor, a configuration is provided in which a radial magnet and a ring-shaped magnet are provided, and the magnetic flux of the ring-shaped magnet of the rotor is not directly returned to the magnet of the rotor A rotating electric machine characterized in that a gap or a non-magnetic part is provided in the periphery of the rotor to increase the magnetic flux in the gap between the rotor and stator.   In a rotating electrical machine using a magnet, a radial magnet and a ring-shaped magnet are provided to insert a magnet in the rotor, and a part of the magnetic pole shape of the rotor is fixed by electromagnetic coupling. A rotating electrical machine characterized by having a configuration in which an asymmetrical shape is provided up to a position corresponding to a different polarity (or the same polarity) as well as corresponding to the same polarity (or a different polarity) relative to the magnetic pole of the child .   In a rotating electrical machine using magnets, when inserting a magnet in a rotor made of magnets, the protruding portion of the rotor made of magnets that is longer than the axial length of the stator made of an iron core by electromagnetic coupling is radial. The magnet and ring-shaped magnet have the same inner pole, and the radial magnet and the ring are not exposed in the portion where the rotor consisting of the magnet is shorter than the axial length of the stator consisting of the iron core by electromagnetic coupling. Rotating electric machine characterized by a configuration in which the inner side opposite to the magnet is different. In a rotating electric machine using a magnet, the stator consists of a magnetic pole made of a ferromagnetic material and an armature winding,
In the rotor, permanent magnets are arranged in a radial and ring shape,
The magnetic flux of the radially arranged permanent magnet is approximately double the magnetic flux of the ring arranged permanent magnet,
Adjustment of the groove shape in the magnetic pole shape made of a ferromagnetic material of the rotor, and adjustment groove so that the magnetic flux distribution based on all permanent magnets for each magnetic pole of the rotor is substantially sinusoidal on the rotating surface of the rotor A rotating electrical machine characterized by providing a width of. In a rotating electric machine using magnets, the stator consists of magnetic poles made of a ferromagnetic material and armature winding, and in the rotor, permanent magnets are arranged in a radial and ring shape,
The magnetic flux of the permanent magnets arranged radially is almost double the main magnet flux of the permanent magnets arranged in the ring shape, and a secondary magnet permanent magnet is provided for the permanent magnet of the main magnet flux arranged in the ring shape. Adjustment of the groove shape and the width of the adjustment groove in the magnetic pole shape made of the ferromagnetic material of the rotor so that the magnetic flux distribution based on all permanent magnets for each magnetic pole of the rotor is substantially sinusoidal Rotating electric machine characterized by providing.   7. A rotating electrical machine according to claim 5, wherein the rotor permanent magnets are arranged radially in the radial arrangement, and a magnetic flux leakage prevention groove is provided on the rotating shaft side, and the rotating shaft is made of a non-magnetic material.   8. The rotating electrical machine according to claim 5, 6, 7, wherein at least one of the magnetic poles and the other magnetic poles are arranged at unequal intervals.   In a rotating electrical machine that uses magnets, the iron in the iron core that holds the permanent magnet of the rotor is replaced with a non-magnetic material to prevent leakage of magnetic flux between the magnets and to be applicable to equipment with a large capacity. Rotating electrical machines and electromagnetic equipment.   In a rotating electrical machine using magnets, the iron core that holds the permanent magnet of the rotor is replaced with a non-magnetic material that is lighter than iron, preventing leakage of magnetic flux between magnets so that it can be applied to equipment with a large capacity, Rotating electrical machines and electromagnetic equipment characterized by enabling weight reduction of rotors.   In Claims 9 and 10, the iron core holding the permanent magnet of the rotor is replaced with a nonmagnetic material that is more conductive than iron, so that leakage of magnetic flux between the magnets is prevented, and it can be applied to a device with a large capacity, Rotating electrical machines and electromagnetic equipment characterized by enabling self-starting during induction startup.   In a rotating electrical machine that uses magnets, a slot is provided on the outer periphery of the iron core that holds the radial magnet of the rotor so that a magnet can be mounted. In addition, a rotating electrical machine or an electromagnetic device characterized in that a driving force is additionally applied in a rotating direction in a synchronous rotating state.   Claims 1, 2, 3, 5, 6, 7, 8, 9, 10, 11 and 12 wherein the permanent magnet of the rotor is replaced with a superconducting electromagnetic coil, such as a large capacity device or a mobile device such as a linear motor. Rotating electrical machines and electromagnetic equipment characterized by expanded applications. In claim 1, 3, 5, 6, 7, 8, 9, 10, 11, 12 and 13, by removing a part of the magnet of the radiation and the ring-shaped magnet part, or adjusting the magnetic force of the magnet, A rotating electrical machine or an electromagnetic device characterized in that characteristics can be further improved by adjusting a magnetic field of an asymmetrical magnetic pole portion provided on the rotor.

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