CN110365140B - Synchronous reluctance motor rotor - Google Patents
Synchronous reluctance motor rotor Download PDFInfo
- Publication number
- CN110365140B CN110365140B CN201910649675.1A CN201910649675A CN110365140B CN 110365140 B CN110365140 B CN 110365140B CN 201910649675 A CN201910649675 A CN 201910649675A CN 110365140 B CN110365140 B CN 110365140B
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- layer
- magnetic barrier
- air magnetic
- synchronous reluctance
- air
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- 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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/246—Variable reluctance rotors
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- 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
Abstract
The invention discloses a synchronous reluctance motor rotor, which comprises an iron core, wherein a round hole is formed in the middle of the iron core; n parts are uniformly arranged on the iron core, and the number of n is the same as that of poles of the motor; the magnetic shield comprises a first layer of air magnetic barrier, a second layer of air magnetic barrier and a third layer of air magnetic barrier, wherein the first layer of air magnetic barrier, the second layer of air magnetic barrier and the third layer of air magnetic barrier are sequentially arranged in radian from inside to outside for each part; magnetic bridges are arranged in the middle of the first layer of air magnetic barrier and the second layer of air magnetic barrier; the outermost part of the part is provided with a recess. The synchronous reluctance motor rotor can solve the problems of serious leakage inductance, low mechanical strength, small salient pole, insufficient electromagnetic torque and the like of a motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a synchronous reluctance motor rotor.
Background
With the development of power electronic technology and the improvement of performance of permanent magnet materials, a permanent magnet synchronous motor is widely applied to occasions with higher requirements on control performance, but the permanent magnet synchronous motor has the defects of too strict temperature limitation, poorer overload capacity, difficult field weakening control and the like, and meanwhile, rare earth resources are consumed too fast in recent years, so that the permanent magnet synchronous motor is likely to face the shortage in the future, the development of the permanent magnet synchronous motor is hindered, but the synchronous reluctance motor has no permanent magnet on a rotor, is simple to process, has lower cost, has no problems of field weakening and high-temperature field loss, and has unique advantages in some fields, so the synchronous reluctance motor is widely concerned and has good development and application potentials.
However, the electromagnetic power and salient pole ratio of the synchronous reluctance motor still need to be improved, and the problems of low mechanical strength, serious leakage inductance and the like caused by the multilayer air magnetic barriers are not well solved, so that the development of the synchronous reluctance motor is limited.
Disclosure of Invention
The invention aims to provide a synchronous reluctance motor rotor which solves the problems of serious leakage inductance, low mechanical strength, small salient pole, insufficient electromagnetic torque and the like of a motor.
In order to achieve the aim, the invention provides a synchronous reluctance motor rotor, which comprises an iron core, wherein a round hole is formed in the middle of the iron core; n parts are uniformly arranged on the iron core, and the number of n is the same as that of poles of the motor;
the magnetic shield comprises a first layer of air magnetic barrier, a second layer of air magnetic barrier and a third layer of air magnetic barrier, wherein the first layer of air magnetic barrier, the second layer of air magnetic barrier and the third layer of air magnetic barrier are sequentially arranged in radian from inside to outside for each part;
magnetic bridges are arranged in the middle of the first layer of air magnetic barrier and the second layer of air magnetic barrier;
the outermost part of the part is provided with a recess.
Preferably, the groove is an inverted conical groove or an inverted arch groove.
Preferably, the width of each of the magnetic bridges is the same.
Preferably, the width of the magnetic bridge is smaller than the opening width of the groove.
Preferably, the radian of the second layer air magnetic barrier is the same as that of the third layer air magnetic barrier.
Preferably, the number of the iron cores is multiple, and each iron core is of a stamped sheet laminating structure.
Preferably, each iron core is provided with a connecting hole, and the synchronous reluctance motor rotor further comprises a connecting piece which fixes the iron cores together through the connecting holes.
Preferably, the connection hole is provided at an intersection of adjacent parts.
Preferably, the connecting member is a rivet.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the periphery of the iron core is provided with grooves, the number of the grooves is the same as the number of poles of the motor, leakage inductance of electrodes can be effectively reduced, magnetic bridges are arranged at the center lines of the first layer of air magnetic barrier and the second layer of air magnetic barrier, mechanical strength can be greatly improved due to the design of the magnetic bridges, the grooves are symmetrically distributed on the periphery of the rotor, symmetry of a magnetic field can be guaranteed, and electromagnetic torque is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a rotor of a synchronous reluctance motor according to the present invention;
fig. 2 is a schematic view of any one of the components of the rotor of the synchronous reluctance motor of the present invention.
Description of the symbols: 1-iron core, 2-first layer of hole magnetic barrier, 3-second layer of hole magnetic barrier, 4-third layer of hole magnetic barrier, 5-magnetic bridge, 6-groove and 7-connecting hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention aims to provide a synchronous reluctance motor rotor with high magnetic induction, high mechanical strength, high salient pole and high electromagnetic torque.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, a rotor of a synchronous reluctance motor according to the present invention includes a core 1.
The center of the iron core 1 is provided with a round hole, n parts (as shown in fig. 2), n connecting holes and n grooves are uniformly arranged on the iron core, and the number of n is the same as that of poles of the motor.
In this embodiment, the value of n is 4.
Aiming at each part, a first layer of air magnetic barrier 2, a second layer of air magnetic barrier 3 and a third layer of air magnetic barrier 4 are sequentially arranged inside and outside the part, and the central lines of the first layer of air magnetic barrier 2, the second layer of air magnetic barrier 3 and the third layer of air magnetic barrier 4 are superposed for avoiding the electromagnetic induction of high-frequency electromagnetic waves.
The opening radians of the second layer of air magnetic barrier 3 and the third layer of air magnetic barrier 4 are the same, the direct axis inductance of the electrode is increased, and a high salient pole ratio is obtained. The magnetic bridges 5 are arranged in the middle positions of the first layer of air magnetic barrier 2 and the second layer of air magnetic barrier 3, the widths of the magnetic bridges 5 are the same, and the mechanical strength of the magnetic bridges 5 is greatly improved.
The outermost part of each of said parts is provided with said recess 6, said recess 6 being effective in reducing leakage inductance of the electrode. The grooves 6 are symmetrically distributed, so that the symmetry of a magnetic field is ensured, and the electromagnetic torque is improved. Preferably, the groove 6 is an inverted cone-shaped groove or an inverted arch-shaped groove.
Preferably, the width of the magnetic bridge 5 and the opening width of the groove 6 are as shown in fig. 2, wherein the width of the magnetic bridge 5 is smaller than the opening width of the groove 6, i.e. h2 < h 1.
The number of the iron cores 1 is multiple, and each iron core is of a stamped sheet laminating structure.
The iron cores 1 are provided with connecting holes 7, and the iron cores 1 are fixed together through the connecting holes 7 and connecting pieces. In this embodiment, the connecting member is a rivet, but the connecting member is not limited to this, and may be selected according to actual needs.
Wherein the connection hole 7 is provided at the junction of the adjacent components.
In the rotor structure, an iron core 1 is of a punching lamination structure, the periphery of the iron core is provided with grooves 6, the number of the grooves is the same as the number of poles of a motor, leakage inductance of electrodes can be effectively reduced, magnetic bridges 5 are arranged at the central lines of a first layer of air magnetic barrier 2 and a second layer of air magnetic barrier 3, the width of each magnetic bridge 5 is the same, the mechanical strength can be greatly improved due to the design of the magnetic bridges 5, the opening radian of a third layer of air magnetic barrier 4 is the same as that of the second layer of air magnetic barrier 3, the direct-axis inductance of the motor is increased, high salient pole ratio is obtained, the grooves are symmetrically distributed on the periphery of the rotor, the symmetry of a magnetic field can be guaranteed, and meanwhile, electromagnetic torque is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. The synchronous reluctance motor rotor is characterized by comprising an iron core, wherein a round hole is formed in the middle of the iron core; n parts are uniformly arranged on the iron core, and the number of n is the same as that of poles of the motor;
the magnetic shield comprises a first layer of air magnetic barrier, a second layer of air magnetic barrier and a third layer of air magnetic barrier, wherein the first layer of air magnetic barrier, the second layer of air magnetic barrier and the third layer of air magnetic barrier are sequentially arranged in radian from inside to outside for each part; the center lines of the first layer of air magnetic barrier, the second layer of air magnetic barrier and the third layer of air magnetic barrier are superposed;
magnetic bridges are arranged in the middle of the first layer of air magnetic barrier and the second layer of air magnetic barrier;
the outermost part of the component is provided with a groove; the grooves are symmetrically distributed;
the width of the magnetic bridge is smaller than the opening width of the groove;
the radian of the second layer of air magnetic barrier is the same as that of the third layer of air magnetic barrier.
2. A synchronous reluctance machine rotor as claimed in claim 1, wherein the recess is an inverted conical groove or an inverted arcuate groove.
3. A synchronous reluctance machine rotor as claimed in claim 1, wherein the width of each of said magnetic bridges is the same.
4. The synchronous reluctance motor rotor as claimed in claim 1, wherein the number of the iron cores is plural, and each iron core is a lamination structure.
5. The rotor of a synchronous reluctance motor as claimed in claim 4, wherein each of the cores has a connection hole formed therein, and further comprising a connection member for fixing the cores together through the connection holes.
6. A synchronous reluctance machine rotor as claimed in claim 5, wherein the coupling holes are provided at the intersections of the adjacent parts.
7. The rotor of a synchronous reluctance machine of claim 5 wherein the coupling members are rivets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910649675.1A CN110365140B (en) | 2019-07-18 | 2019-07-18 | Synchronous reluctance motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910649675.1A CN110365140B (en) | 2019-07-18 | 2019-07-18 | Synchronous reluctance motor rotor |
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| Publication Number | Publication Date |
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| CN110365140A CN110365140A (en) | 2019-10-22 |
| CN110365140B true CN110365140B (en) | 2020-12-18 |
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| CN201910649675.1A Active CN110365140B (en) | 2019-07-18 | 2019-07-18 | Synchronous reluctance motor rotor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078750A (en) * | 2020-01-03 | 2021-07-06 | 哈尔滨理工大学 | Novel synchronous reluctance motor rotor structure |
| CN111817481A (en) * | 2020-08-25 | 2020-10-23 | 常州市南方电机有限公司 | Novel explosion-proof synchronous reluctance motor and manufacturing method thereof |
| CN112510869A (en) * | 2020-11-25 | 2021-03-16 | 中车永济电机有限公司 | Novel synchronous reluctance motor rotor |
| CN114337017A (en) * | 2021-12-29 | 2022-04-12 | 安徽皖南新维电机有限公司 | Synchronous reluctance motor rotor punching sheet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203014522U (en) * | 2012-12-17 | 2013-06-19 | 中国电子科技集团公司第二十一研究所 | Synchronous reluctance motor rotor structure |
| WO2015170352A1 (en) * | 2014-05-09 | 2015-11-12 | Tecnomatic S.P.A. | Rotor for a switched or assisted reluctance machine |
| CN204794417U (en) * | 2015-04-24 | 2015-11-18 | 天津市松正电动汽车技术股份有限公司 | Hybrid power system of synchronous reluctance machine rotor and applied this rotor |
| CN109983676A (en) * | 2016-10-07 | 2019-07-05 | 东芝产业机器系统株式会社 | Synchronous reluctance type rotating electric machine |
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2019
- 2019-07-18 CN CN201910649675.1A patent/CN110365140B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203014522U (en) * | 2012-12-17 | 2013-06-19 | 中国电子科技集团公司第二十一研究所 | Synchronous reluctance motor rotor structure |
| WO2015170352A1 (en) * | 2014-05-09 | 2015-11-12 | Tecnomatic S.P.A. | Rotor for a switched or assisted reluctance machine |
| CN204794417U (en) * | 2015-04-24 | 2015-11-18 | 天津市松正电动汽车技术股份有限公司 | Hybrid power system of synchronous reluctance machine rotor and applied this rotor |
| CN109983676A (en) * | 2016-10-07 | 2019-07-05 | 东芝产业机器系统株式会社 | Synchronous reluctance type rotating electric machine |
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| CN110365140A (en) | 2019-10-22 |
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