CN113726047A - Motor rotor and permanent magnet auxiliary reluctance motor with same - Google Patents
Motor rotor and permanent magnet auxiliary reluctance motor with same Download PDFInfo
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- CN113726047A CN113726047A CN202110984077.7A CN202110984077A CN113726047A CN 113726047 A CN113726047 A CN 113726047A CN 202110984077 A CN202110984077 A CN 202110984077A CN 113726047 A CN113726047 A CN 113726047A
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- rotor
- magnetic pole
- permanent magnet
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052742 iron Inorganic materials 0.000 claims abstract description 18
- 239000000696 magnetic material Substances 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 9
- 238000004663 powder metallurgy Methods 0.000 claims abstract description 8
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 10
- 238000002955 isolation Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000004888 barrier function Effects 0.000 description 9
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008111 motor development Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/028—Means for mechanical adjustment of the excitation flux by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a motor rotor and a permanent magnet auxiliary reluctance motor with the same, wherein the motor rotor comprises a rotor iron core and magnetic poles, and the rotor iron core is provided with magnetic pole positions for arranging the magnetic poles; the magnetic pole magnetic conduction channels and the permanent magnets are alternately laminated together along the radial direction of the rotor core to form a magnetic pole, so that the structure of the motor rotor is optimized, and the cost of the rotor is reduced; the adjacent magnetic pole magnetic conduction channels are arranged at intervals, and a magnetic isolation bridge is omitted, so that the magnetic leakage quantity and the iron loss quantity of the motor rotor are reduced, and the performance and the efficiency of the motor are improved; the magnetic pole magnetic conduction channel positioned on the outer peripheral side of the motor rotor is provided with a concave structure, so that the air gap of a q axis is increased, the q axis inductance is reduced, and the salient pole ratio of the motor rotor is improved; the rotor core is formed by laminating silicon steel sheets, the magnetic pole and the magnetic conduction channel are made of iron-based powder metallurgy and have the characteristics of high magnetic conductivity and low iron loss, and the permanent magnet is made of a hard magnetic material, so that the manufacturing process of the motor rotor is simplified, and the power factor and the power density of the motor are improved.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a motor rotor and a permanent magnet auxiliary reluctance motor with the same.
Background
The permanent magnet synchronous motor is one of the main directions of motor development, wherein the power density of the permanent magnet auxiliary reluctance motor is equivalent to that of the rare earth permanent magnet synchronous motor when the permanent magnet auxiliary reluctance motor does not use expensive rare earth permanent magnets, so that the permanent magnet auxiliary reluctance motor is widely applied. In the existing permanent magnet auxiliary reluctance motor, a motor rotor comprises a rotor core and a permanent magnet, wherein the rotor core is formed by overlapping silicon steel sheets, magnetic barrier grooves are punched on the silicon steel sheets, a magnetic conduction channel is formed between the magnetic barrier grooves, and the permanent magnet is arranged in the magnetic barrier grooves; a plurality of magnetic barrier grooves and magnetic conduction channels are formed in the rotor core, and the magnetic conduction channels are connected through magnetic isolation bridges, so that the structure of the motor rotor is complicated, the manufacturing process is complex, the magnetic leakage and the iron loss of the rotor are increased, and the performance and the efficiency of the motor are reduced.
Disclosure of Invention
In view of this, the invention provides a motor rotor and a permanent magnet-assisted reluctance motor with the same, so as to solve the problems of complex structure, complex manufacturing process, large magnetic flux leakage and the like of the rotor in the prior art.
The present invention provides a motor rotor comprising:
a rotor core having a magnetic pole position;
the magnetic pole is arranged at the magnetic pole position and comprises a magnetic pole magnetic conduction channel made of soft magnetic materials and a permanent magnet made of hard magnetic materials; and the magnetic pole and magnetic conduction channel is bonded with the permanent magnet.
Further optionally, the magnetic pole positions include a plurality of magnetic pole positions, and the plurality of magnetic pole positions are arranged at intervals along the circumferential direction of the rotor core.
Further optionally, the number of the magnetic poles is the same as the number of the magnetic pole bits; each magnetic pole comprises a plurality of magnetic pole magnetic conduction channels and a plurality of permanent magnets; the adjacent magnetic poles have opposite polarities.
The plurality of magnetic pole magnetic conduction channels and the plurality of permanent magnets are alternately laminated together along the radial direction of the rotor core.
Further optionally, the adjacent two magnetic pole magnetic conduction channels are spaced from each other and do not contact each other.
Further optionally, the cross section of the magnetic conduction channel of the adjacent magnetic pole is matched with the cross section of the permanent magnet; the cross section of the magnetic pole and the cross section of the permanent magnet are both linear, or
The cross section of the magnetic pole magnetic conduction channel and the cross section of the permanent magnet are both arc-shaped, and correspondingly, the cross section of the magnetic pole position is arc-shaped.
Further optionally, the magnetic pole magnetic conduction channel located on the outer peripheral side of the motor rotor is formed with a concave structure.
Further optionally, the material of the rotor core is different from the material of the magnetic pole and magnetic conduction channel and the material of the permanent magnet.
Further optionally, the rotor core is formed by laminating silicon steel sheets, and the material of the magnetic pole and the magnetic conduction channel is iron-based powder metallurgy.
Further optionally, the electric motor rotor further includes a sheath, which is sleeved on the outer peripheral sides of the rotor core and the magnetic pole.
The invention also provides a permanent magnet auxiliary reluctance motor which comprises a motor stator and any one of the motor rotors.
The invention provides a motor rotor, which comprises a rotor iron core and magnetic poles, wherein the rotor iron core is provided with magnetic pole positions for arranging the magnetic poles; each magnetic pole comprises a plurality of magnetic pole magnetic conduction channels and a plurality of permanent magnets, the magnetic pole magnetic conduction channels and the permanent magnets are alternately laminated together along the radial direction of the rotor core, the magnetic pole magnetic conduction channels are made of soft magnetic materials, the permanent magnets are made of hard magnetic materials, and the adjacent magnetic pole magnetic conduction channels are connected with the permanent magnets in an adhesive mode, so that the structure of the motor rotor is optimized, a rotor baffle is omitted, and the cost of the rotor is reduced; the adjacent magnetic pole magnetic conduction channels are arranged at intervals, and a magnetic isolation bridge is omitted, so that the magnetic leakage quantity and the iron loss quantity of the motor rotor are reduced, the performance and the efficiency of the motor are improved, and the problem of rotor heating caused by local magnetic saturation at the magnetic isolation bridge is solved; the magnetic pole magnetic conduction channel positioned on the outer peripheral side of the motor rotor is provided with a concave structure, so that the air gap of a q axis is increased, the inductance of the q axis is reduced, the salient pole ratio of the motor rotor is improved, and the torque output capacity of the motor is enhanced; the rotor core is formed by laminating silicon steel sheets, the magnetic pole and the magnetic conduction channel are made of iron-based powder metallurgy, and the rotor core has the characteristics of high magnetic conductivity and low iron loss, simplifies the manufacturing process of the motor rotor, improves the power factor and the power density of the motor, and ensures the reliability and the practicability of the motor operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIGS. 1a and 1b are schematic structural views of an embodiment of a rotor of an electric machine according to the present invention;
FIG. 2 is a schematic structural view of an embodiment of a magnetic pole provided in the present invention;
fig. 3a is a schematic structural diagram of a first permanent magnet according to an embodiment of the present invention;
FIG. 3b is a schematic structural diagram of a second permanent magnet according to an embodiment of the present invention;
fig. 4a is a schematic structural view of an embodiment of a first magnetic pole magnetic conduction channel provided in the present invention;
FIG. 4b is a schematic structural view of an embodiment of a second magnetic pole magnetic conductive channel provided in the present invention;
fig. 5a and 5b are schematic structural views of an embodiment of a rotor core provided in the present invention;
FIG. 6a is a schematic structural view of an embodiment of a sheath provided by the present invention;
FIG. 6b is a schematic structural diagram of a rotor of an electric machine according to another embodiment of the present invention;
in the figure:
1-a rotor core; 11-pole position;
2-magnetic pole; 21-magnetic pole magnetic conduction channel; 211-a first magnetic pole magnetically permeable channel; 212-a second pole magnetic conduction channel; 213-a concave structure; 22-a permanent magnet; 221-a first permanent magnet; 222-a second permanent magnet;
and 3, sheathing.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
In the existing permanent magnet auxiliary reluctance motor, a plurality of magnetic barrier grooves and a plurality of magnetic conduction channels are required to be formed on a rotor core, so that the structure of a motor rotor is complicated and the manufacturing process is complicated; the magnetic conduction passageway is directly formed by rotor core, connects through separating the magnetic bridge between the magnetic conduction passageway, and the magnetic leakage volume and the iron loss volume of rotor increase, separate magnetic bridge department and can lead to the rotor to generate heat because of local magnetic saturation, the performance and the efficiency reduction of motor. The invention creatively provides a motor rotor, which comprises a rotor core and magnetic poles, wherein the rotor core is provided with magnetic pole positions; the magnetic pole is arranged at the magnetic pole position and comprises a magnetic pole magnetic conduction channel made of soft magnetic materials and a permanent magnet made of hard magnetic materials, and the magnetic pole magnetic conduction channel is bonded with the permanent magnet; the magnetic barrier groove on the rotor core is cancelled, so that the forming quality of the rotor core is improved, the structural strength of the rotor core is ensured, the structure of the motor rotor is optimized, and the manufacturing process of the electronic rotor is simplified; the magnetic isolation bridge in the prior art is removed, so that the motor rotor is of a structure without the magnetic isolation bridge, the magnetic leakage quantity and the iron loss quantity at the magnetic isolation bridge are reduced, the performance and the efficiency of the motor are improved, and the problem that the rotor generates heat due to local magnetic saturation at the magnetic isolation bridge is solved.
As shown in fig. 1a, 1b, 2, 5a and 5b, the present embodiment provides a rotor for an electric machine, including a rotor core 1 and a magnetic pole 2; the rotor core 1 is formed with a magnetic pole position 11, the magnetic pole 2 is arranged at the magnetic pole position 11 and comprises a magnetic pole magnetic conduction channel 21 made of soft magnetic material and a permanent magnet 22 made of hard magnetic material, and the magnetic pole magnetic conduction channel 21 and the permanent magnet 22 are bonded together; the magnetic barrier groove on the rotor core 1 is cancelled, the forming quality of the rotor core 1 is improved, the structural strength of the rotor core 1 is ensured, the structure of the motor rotor is optimized, the manufacturing process of the electronic rotor is simplified, and the manufacturing cost of the rotor is reduced; the magnetic isolation bridge in the prior art is removed, so that the motor rotor is of a structure without the magnetic isolation bridge, the magnetic leakage quantity and the iron loss quantity at the magnetic isolation bridge are reduced, the performance and the efficiency of the motor are improved, and the problem that the rotor generates heat due to local magnetic saturation at the magnetic isolation bridge is solved.
Further, the magnetic pole positions 11 include a plurality of magnetic pole positions 11, and the plurality of magnetic pole positions 11 are arranged at intervals along the circumferential direction of the rotor core 1; correspondingly, the magnetic poles 2 comprise a plurality of magnetic poles, and the number of the magnetic poles 2 is consistent with that of the magnetic pole positions 11; each magnetic pole 2 comprises a plurality of magnetic pole magnetic conduction channels 21 and a plurality of permanent magnets 22; a plurality of magnetic pole magnetic conduction channels 21 and a plurality of permanent magnets 22 are alternately laminated together along the radial direction of the rotor core 1; the adjacent magnetic poles have opposite polarities; specifically, in this embodiment, each of the magnetic pole positions 11 and the magnetic poles 2 includes six magnetic poles, each of the magnetic poles 2 includes two permanent magnets 22 and two magnetic pole magnetic conduction channels 21, and the two permanent magnets 22 and the two magnetic pole magnetic conduction channels 21 are alternately arranged and bonded together to form a magnetic pole; and a rotor baffle is eliminated, so that the cost of the rotor is reduced.
The number of the magnetic poles 2, the magnetic pole sites 11, the magnetic pole magnetic conduction paths 21, and the permanent magnets 22 is not limited, and a plurality of magnetic poles may be provided as needed.
In order to reduce the magnetic leakage quantity and the iron loss quantity of the electronic rotor and improve the performance of the motor, the adjacent magnetic pole magnetic conduction channels 21 are not contacted at intervals.
In order to reliably connect the magnetic pole magnetic conduction channels 21 and the permanent magnets 22, the cross sections of the adjacent magnetic pole magnetic conduction channels 21 are matched with the cross section of the permanent magnet 22; the cross section of the magnetic pole magnetic conduction channel 21 and the cross section of the permanent magnet 22 are both linear or arc; the magnetic pole and magnetic conduction channel 21 is matched with the adjacent permanent magnet 22, so that the sine degree of air gap magnetic density can be improved, the harmonic content of electromagnetic force is reduced, and the harmonic loss is reduced.
As shown in fig. 3a, 3b, 4a and 4b, in this embodiment, the cross section of the magnetic pole magnetic conduction channel 21 and the cross section of the permanent magnet 22 are both arc-shaped, and the cross section corresponding to the magnetic pole 11 is arc-shaped; specifically, the magnetic pole 2 includes a first permanent magnet 221, a first magnetic pole magnetic conduction channel 211, a second permanent magnet 222, and a second magnetic pole magnetic conduction channel 212 that are sequentially stacked from inside to outside along the radial direction of the rotor core 1, that is, the first permanent magnet 221 is disposed near the rotor core 1, and the second magnetic pole magnetic conduction channel 212 is disposed near the outer peripheral side of the rotor core 1; the first permanent magnet 221, the first magnetic pole magnetic conduction channel 211, the second permanent magnet 222 and the second magnetic pole magnetic conduction channel 212 are concentrically arranged, and the effective radiuses are sequentially reduced; the width of the first permanent magnet 221 is smaller than that of the second permanent magnet 222 along the radial direction of the rotor core 1, the width of the first magnetic pole magnetic conduction channel 211 is smaller than that of the second magnetic pole magnetic conduction channel 212, and the width of the first magnetic pole magnetic conduction channel 211 is smaller than that of the first permanent magnet 221 and the second permanent magnet 222; two magnetic pole magnetic conduction channels 21 are formed on one magnetic pole 2, the first magnetic pole magnetic conduction channel 211 is not in contact with the second magnetic pole magnetic conduction channel 212, the first permanent magnet 221 is not in contact with the second permanent magnet 222, the rotor core 1 is formed by overlapping silicon steel sheets and forms a third magnetic conduction channel, the first magnetic pole magnetic conduction channel 211, the second magnetic pole magnetic conduction channel 212 and the third magnetic conduction channel are not in contact, a magnetic isolation bridge is omitted, the magnetic leakage quantity at the magnetic isolation bridge is reduced, the performance of the motor is improved, the problem of rotor heating caused by local magnetic saturation at the magnetic isolation bridge is solved, the area occupation ratio of magnetic density saturation is reduced, the magnetic density saturation levels of the magnetic pole magnetic conduction channels and the yoke part of the stator can be reduced, the magnetic lines of force pass through the channels smoothly, and the output of the torque of the motor is facilitated; compared with the common permanent magnet synchronous motor, the permanent magnet synchronous motor has the advantages that the magnetic pole magnetic conduction channels are increased, the magnetic permeability is high, the magnetic field distribution is wide, the density is more uniform, the pulsation of a motor rotor is reduced, and the running stability of the motor is improved.
In order to improve the power density and efficiency of the motor, a magnetic pole magnetic conduction channel positioned on the outer peripheral side of a motor rotor is provided with a concave structure 213; in this embodiment, the concave structure 213 is formed on the outer peripheral side of the second magnetic pole magnetic conduction channel 212 close to the rotor core 1, so that the magnetic path of the second magnetic pole magnetic conduction channel 212 is extended, the magnetic flux leakage at the second magnetic pole magnetic conduction channel 212 is reduced, the salient pole ratio is improved, and the power density and efficiency of the motor are further improved; the air gap of the q axis is increased, the q axis inductance is reduced, and the torque density and the output capacity of the motor are enhanced; the motor can ensure the efficiency of the motor by using partial reluctance torque under the condition of lower back electromotive force.
In order to reduce the loss of the motor rotor, the material of the rotor core 1 is different from that of the magnetic pole magnetic conduction channel 21, and the material of the rotor core 1 is different from that of the permanent magnet 22;
further, the rotor core 1 is formed by laminating silicon steel sheets, the magnetic pole magnetic conduction channels 21 and the permanent magnets 22 are alternately arranged and bonded at the magnetic pole positions of the rotor core 1 according to a certain rule, the structure belongs to a magnetic pole surface-mounted rotor, the manufacturing process of the motor rotor is simplified, and the magnetic pole magnetic conduction channels 21, the permanent magnets 22 and the rotor core 1 are reliably connected. The permanent magnet 22 is made of hard magnetic material, and is characterized in that after the external magnetic field disappears, the surface residual magnetism Br of the permanent magnet 22 always exists, the size is related to the material proportion, and the direction is related to the direction of the magnetic field which is magnetized in advance.
Preferably, the magnetic pole and magnetic conduction channel 21 is made of iron-based powder metallurgy, and the iron-based powder metallurgy has the advantages of high magnetic conduction and low loss. The permanent magnet 22 is used as a magnetic barrier by utilizing the characteristic of poor magnetic conductivity of the permanent magnet 22, the power density and the torque density of the motor can be increased, the characteristics of high magnetic conductivity and low eddy current loss of iron-based powder metallurgy are utilized, the iron-based powder metallurgy is made into the magnetic pole magnetic conduction channel 21, the magnetic pole 2 is further formed by an alternate superposition bonding mode, the thickness and the size of the magnetic pole magnetic conduction channel 21 are not limited, the permanent magnet auxiliary reluctance motor with 2-3 layers of magnetic barriers can be designed, and the surface residual magnetism Br is almost equal to zero after an external magnetic field disappears; the magnetic pole and magnetic conduction channel 21 does not generate high iron loss (mainly eddy current) due to the thickness dimension; the structure and the process are simple, the assembly is convenient, the mutual adaptability between the magnetic pole 2 and the rotor core 1 is improved, and the electric performance of the motor is improved. Compared with the prior art, the magnetic conduction channel made of silicon steel sheets is formed by laminating sheets.
In some embodiments, as shown in fig. 6a and 6b, the motor rotor further includes a sheath 3, which is sleeved on the outer peripheral sides of the rotor core 1 and the magnetic poles 2, to increase the mechanical strength of the motor rotor; the sheath 3 is made of carbon fiber or non-magnetic metal material.
The embodiment also provides a permanent magnet auxiliary reluctance motor which comprises a motor stator and the motor rotor.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. An electric machine rotor, comprising:
a rotor core having a magnetic pole position;
the magnetic pole is arranged at the magnetic pole position and comprises a magnetic pole magnetic conduction channel made of soft magnetic materials and a permanent magnet made of hard magnetic materials; and the magnetic pole and magnetic conduction channel is bonded with the permanent magnet.
2. The electric machine rotor as recited in claim 1, wherein the pole sites include a plurality of pole sites that are spaced apart along a circumferential direction of the rotor core.
3. The electric machine rotor as recited in claim 2, wherein the magnetic poles include a plurality, and the number of the magnetic poles is identical to the number of the magnetic pole positions; each magnetic pole comprises a plurality of magnetic pole magnetic conduction channels and a plurality of permanent magnets; the adjacent magnetic poles have opposite polarities;
the plurality of magnetic pole magnetic conduction channels and the plurality of permanent magnets are alternately laminated together along the radial direction of the rotor core.
4. The electric machine rotor as recited in claim 3, wherein adjacent two of the pole magnetic conductive channels are spaced from contact.
5. The electric machine rotor as recited in claim 3, wherein the cross-section of the adjacent pole magnetic conduction channel is adapted to the cross-section of the permanent magnet; the cross section of the magnetic pole and the cross section of the permanent magnet are both linear, or
The cross section of the magnetic pole magnetic conduction channel and the cross section of the permanent magnet are both arc-shaped, and correspondingly, the cross section of the magnetic pole position is arc-shaped.
6. The electric machine rotor as recited in claim 3, wherein the pole magnetic conduction channels on the outer peripheral side of the electric machine rotor are formed with a concave structure.
7. The electric machine rotor as claimed in claim 1, wherein the material of the rotor core is different from the material of the magnetic pole magnetic conduction channel and the material of the permanent magnet.
8. The electric machine rotor as recited in claim 7, wherein the rotor core is formed by laminating silicon steel sheets, and the magnetic pole and magnetic conduction channel is made of iron-based powder metallurgy.
9. The electric machine rotor as recited in claim 1, further comprising a sheath that is fitted over outer peripheral sides of the rotor core and the magnetic poles.
10. A permanent magnet assisted reluctance machine comprising a machine stator and a machine rotor according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110984077.7A CN113726047A (en) | 2021-08-25 | 2021-08-25 | Motor rotor and permanent magnet auxiliary reluctance motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110984077.7A CN113726047A (en) | 2021-08-25 | 2021-08-25 | Motor rotor and permanent magnet auxiliary reluctance motor with same |
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| Publication Number | Publication Date |
|---|---|
| CN113726047A true CN113726047A (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110984077.7A Pending CN113726047A (en) | 2021-08-25 | 2021-08-25 | Motor rotor and permanent magnet auxiliary reluctance motor with same |
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| Country | Link |
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| CN111953098A (en) * | 2019-05-17 | 2020-11-17 | Tdk株式会社 | Rotating electrical machine |
| CN112821608A (en) * | 2021-01-22 | 2021-05-18 | 珠海格力电器股份有限公司 | Rotor punching sheet, rotor core, motor rotor, assembling method and motor |
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2021
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|---|---|---|---|---|
| JP2001238382A (en) * | 2000-02-21 | 2001-08-31 | Hitachi Metals Ltd | Rotating machine |
| US20030062791A1 (en) * | 2001-10-03 | 2003-04-03 | Reiter Frederick B. | Manufacturing method and composite powder metal rotor assembly for synchronous reluctance machine |
| JP2012044738A (en) * | 2010-08-13 | 2012-03-01 | Nippon Steel Corp | Split rotor and electric motor |
| CN102801236A (en) * | 2012-03-05 | 2012-11-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronous reluctance motor and rotor thereof, and assembly method for motor |
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