CN112510868A - Rotor core of reluctance motor and reluctance motor - Google Patents
Rotor core of reluctance motor and reluctance motor Download PDFInfo
- Publication number
- CN112510868A CN112510868A CN202011406048.4A CN202011406048A CN112510868A CN 112510868 A CN112510868 A CN 112510868A CN 202011406048 A CN202011406048 A CN 202011406048A CN 112510868 A CN112510868 A CN 112510868A
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- Prior art keywords
- rotor
- punching
- magnetism isolating
- rotor punching
- rotor core
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- 238000004080 punching Methods 0.000 claims abstract description 124
- 230000005389 magnetism Effects 0.000 claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
Abstract
The invention belongs to the technical field of motors, and particularly relates to a reluctance motor rotor core and a reluctance motor. Aiming at the defect that the magnetic leakage phenomenon of the rotor punching sheet of the existing reluctance motor is obvious, the invention adopts the following technical scheme: a reluctance machine rotor core, comprising: the first rotor punching sheets are provided with a plurality of first magnetism isolating grooves, and the outer ends of the first magnetism isolating grooves are closed; the second rotor punching sheets are provided with a plurality of second magnetism isolating grooves, and at least one end of each second magnetism isolating groove is opened; the first rotor punching sheets and the second rotor punching sheets are stacked alternately. The rotor core of the reluctance motor has the beneficial effects that: at least one end of a second magnetism isolating groove of the second rotor punching sheet is opened, namely the width of the edge of the second magnetism isolating groove is 0, so that the magnetic leakage is effectively reduced, and the energy efficiency of the motor is improved.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a reluctance motor rotor core and a reluctance motor.
Background
At present, rotor punching sheets of a rotor core of a reluctance motor are basically designed in a structural form of circumferential uniform distribution. In order to reduce magnetic leakage and improve energy efficiency, the narrower the width of the edge of the magnetic separation groove of the rotor punching sheet of the reluctance motor is required to be, the better the width is, theoretically, the optimal width is 0, but due to the structural strength of the rotor, the width of the edge of the magnetic separation groove of the rotor punching sheet of the reluctance motor cannot be 0, the magnetic leakage is obvious, and the energy efficiency of the motor is low.
The rotor punching sheets of the existing reluctance motor rotor core are the same. Specifically, referring to fig. 2, in order to ensure the structural strength of the rotor, two ends of the magnetic isolation groove of the rotor sheet of the conventional reluctance motor are sealed, that is, the width of the edge of the magnetic isolation groove of the rotor sheet of the reluctance motor cannot be 0, so that the magnetic flux leakage phenomenon is obvious.
Disclosure of Invention
Aiming at the defect that the magnetic leakage phenomenon of the rotor punching sheet of the existing reluctance motor is obvious, the invention provides the rotor core of the reluctance motor, which reduces the magnetic leakage and improves the motor energy efficiency. The invention also provides a reluctance motor.
In order to achieve the purpose, the invention adopts the following technical scheme: a reluctance machine rotor core, comprising:
the first rotor punching sheets are provided with a plurality of first magnetism isolating grooves, and the outer ends of the first magnetism isolating grooves are closed;
the second rotor punching sheets are provided with a plurality of second magnetism isolating grooves, and at least one end of each second magnetism isolating groove is opened;
the first rotor punching sheets and the second rotor punching sheets are stacked alternately.
According to the rotor core of the reluctance motor, at least one end of the second magnetism isolating groove of the second rotor punching sheet is open, namely the width of the edge of the second magnetism isolating groove is 0, so that magnetic leakage is effectively reduced, and the energy efficiency of the motor is improved.
As an improvement, two ends of the second magnetism isolating groove are opened.
As an improvement, the second rotor punching sheet comprises a plurality of punching sheets which are arranged on the same layer and are arranged independently, and the second magnetism isolating groove is formed in a gap between every two punching sheets.
As an improvement, the second rotor punching sheet comprises a central punching sheet and M groups of peripheral punching sheet groups, each group of peripheral punching sheets is provided with N peripheral punching sheets, wherein M is the number of iron core poles. In other schemes, the central punching sheet can also be provided with M groups, and the central punching sheet can be contacted with each other, so that the central punching sheet is set to be a complete sheet, the assembly is convenient, and the structural strength is better.
As a refinement, M is 2 or 4 or 6 or 8. In other schemes, M may also be adjusted to other cell pole numbers.
As an improvement, the first rotor punching sheet and the second rotor punching sheet are respectively provided with a connecting punching point, the connecting punching point is provided with a matched outer convex part and an inner concave part, and the first rotor punching sheet and/or the second rotor punching sheet and/or the first rotor punching sheet and the second rotor punching sheet are connected by means of the connecting punching point.
As an improvement, the first rotor punching sheet and the second rotor punching sheets are sequentially and alternately stacked, so that the number of the second rotor punching sheets with low magnetic leakage is increased as much as possible while the strength is ensured. Wherein, it is comparatively suitable that a first rotor punching and 3 to 8 second rotor punching pile up in turn.
As an improvement, the second magnetism isolating groove is approximately in an open U shape.
As improvement, the middle of part of the first magnetism isolating grooves is separated, so that the structural strength of the first rotor punching sheet is better.
A reluctance motor comprises a rotor core, wherein the rotor core is the reluctance motor rotor core.
The rotor core of the reluctance motor has the beneficial effects that: at least one end of a second magnetism isolating groove of the second rotor punching sheet is opened, namely the width of the edge of the second magnetism isolating groove is 0, so that the magnetic leakage is effectively reduced, and the energy efficiency of the motor is improved.
A permanent magnet motor comprises a stator and a rotor, wherein the rotor is the motor rotor.
The reluctance motor provided by the invention adopts the reluctance motor rotor core provided by the invention, and has all the beneficial effects of the reluctance motor rotor core provided by the invention.
Drawings
Fig. 1 is a schematic structural diagram of a rotor core of a reluctance motor according to a first embodiment of the present invention.
Fig. 2 and fig. 3 are schematic structural diagrams of different angles of the first rotor sheet of the rotor core of the reluctance motor according to the first embodiment of the present invention.
Fig. 4 and 5 are schematic structural diagrams of different angles of the second rotor punching sheet of the rotor core of the reluctance motor according to the first embodiment of the present invention.
In the figure, 1, a first rotor punching sheet; 11. a first magnetism isolating groove; 12. connecting punching points;
2. a second rotor sheet; 21. a central punching sheet; 22. a first edge punching sheet; 23. a second edge punching sheet; 24. a third edge punching sheet; 25. a fourth edge punching sheet; 26. and a second magnetism isolating groove.
Detailed Description
The technical solutions of the embodiments of the present invention will be explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and are not all embodiments. Other embodiments obtained by persons skilled in the art without any inventive work based on the embodiments in the embodiment belong to the protection scope of the invention.
Referring to fig. 1 to 5, a rotor core for a reluctance motor according to the present invention includes:
the first rotor punching sheets are provided with a plurality of first magnetism isolating grooves, and the outer ends of the first magnetism isolating grooves are closed;
the second rotor punching sheets are provided with a plurality of second magnetism isolating grooves, and at least one end of each second magnetism isolating groove is opened;
the first rotor punching sheets and the second rotor punching sheets are stacked alternately.
According to the rotor core of the reluctance motor, at least one end of the second magnetism isolating groove of the second rotor punching sheet is open, namely the width of the edge of the second magnetism isolating groove is 0, so that magnetic leakage is effectively reduced, and the energy efficiency of the motor is improved.
Example one
Referring to fig. 1 to 5, a rotor core of a reluctance motor according to a first embodiment of the present invention includes:
the rotor punching sheet comprises a plurality of first rotor punching sheets 1, wherein each first rotor punching sheet 1 is provided with a plurality of first magnetism isolating grooves 11, and the outer ends of the first magnetism isolating grooves 11 are closed;
the second rotor punching sheets 2 are provided with a plurality of second magnetism isolating grooves 26, and at least one end of each second magnetism isolating groove 26 is opened;
the first rotor punching sheets 1 and the second rotor punching sheets 2 are stacked alternately.
In this embodiment, the second magnetism isolating groove 26 has two open ends.
In this embodiment, the second rotor punching sheet 2 includes a plurality of punching sheets that are located on the same layer and are independently arranged, and the second magnetism isolating groove 26 is formed in a gap between the punching sheets. Namely, the second rotor punching 2 is composed of a plurality of punching sheets.
In this embodiment, the second rotor punching 2 includes a central punching 21 and M groups of peripheral punching groups, each group of peripheral punching has N peripheral punching, where M is the number of poles of the iron core. In other schemes, the central punching sheet 21 can also have M groups, and the central punching sheet 21 can be contacted with each other, so that the central punching sheet 21 is set to be a complete sheet, and the assembly is convenient, and the structural strength is better.
In this embodiment, M is 2 or 4 or 6 or 8. In other schemes, M may also be adjusted to other cell pole numbers.
In this embodiment, the first rotor punching sheet 1 and the second rotor punching sheet 2 are both provided with a connection punching point 12, the connection punching point 12 has a matched outer convex part and an inner concave part, and the first rotor punching sheet 1 and/or the second rotor punching sheet 2 and/or the first rotor punching sheet 1 and the second rotor punching sheet 2 are connected by means of the connection punching point 12. The connecting punching points 12 can be punched simultaneously when punching the rotor punching.
In this embodiment, the connection punching points 12 of the first rotor punching sheet 1 and the second rotor punching sheet 2 are the same.
In this embodiment, the first rotor punching sheet 1 and the plurality of second rotor punching sheets 2 are stacked in turn, so that the number of the second rotor punching sheets 2 with less magnetic leakage is increased as much as possible while the strength is ensured. Wherein, it is comparatively suitable that a first rotor punching 1 and 3 to 8 second rotor punching 2 pile up in turn. Specifically, in this embodiment, one first rotor sheet 1 and five second rotor sheets 2 are stacked alternately, that is, one first rotor sheet 1, five second rotor sheets 2, one first rotor sheet 1, and five second rotor sheets 2 are stacked alternately.
In other embodiments, one first rotor sheet 1 and one second rotor sheet 2 may be stacked in turn, or a plurality of first rotor sheets 1 and a plurality of second rotor sheets 2 may be stacked in turn.
In this embodiment, the two ends of the rotor core of the permanent magnet motor are provided with first rotor punching sheets 1.
In this embodiment, the second magnetism isolating groove 26 is substantially in an open U shape.
In this embodiment, the middle of a part of the first magnetism isolating grooves 11 is partitioned, so that the structural strength of the first rotor punching sheet 1 is better. Specifically, the first magnetism isolating grooves 11 are divided into four groups, the inner part of each group of first magnetism isolating grooves 11 from radial direction to outside is divided into four circles, and except one first magnetism isolating groove 11 at the outermost circle, there are three first magnetism isolating grooves 11 at the inner three circles.
A reluctance motor comprises a rotor core, wherein the rotor core is the reluctance motor rotor core.
The rotor core of the reluctance motor has the beneficial effects that: at least one end of the second magnetism isolating groove 26 of the second rotor punching sheet 2 is opened, namely the edge width of the second magnetism isolating groove 26 is 0, so that the magnetic leakage is effectively reduced, and the energy efficiency of the motor is improved.
The invention also provides a reluctance motor, and the reluctance motor rotor core provided by the embodiment I of the invention is adopted.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto but is intended to cover various modifications and changes, including but not limited to the details shown in the drawings and described in the foregoing detailed description. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the following claims.
Claims (10)
1. A reluctance machine rotor core which characterized in that: the reluctance motor rotor core includes:
the rotor punching sheet comprises a plurality of first rotor punching sheets (1), wherein each first rotor punching sheet (1) is provided with a plurality of first magnetism isolating grooves (11), and the outer ends of the first magnetism isolating grooves (11) are closed;
the second rotor punching sheets (2) are provided with a plurality of second magnetism isolating grooves (26), and at least one ends of the second magnetism isolating grooves (26) are opened;
the first rotor punching sheets (1) and the second rotor punching sheets (2) are stacked alternately.
2. A reluctance machine rotor core according to claim 1, wherein: the two ends of the second magnetism isolating groove (26) are opened.
3. A reluctance machine rotor core according to claim 2, wherein: the second rotor punching sheet (2) comprises a plurality of punching sheets which are arranged on the same layer and are arranged independently, and a second magnetism isolating groove (26) is formed in a gap between every two punching sheets.
4. A reluctance machine rotor core according to claim 3, wherein: the second rotor punching sheet (2) comprises a central punching sheet (21) and M groups of peripheral punching sheet groups, each group of peripheral punching sheets is provided with N peripheral punching sheets, and M is the number of iron core poles.
5. A reluctance machine rotor core according to claim 4, wherein: and M is 2 or 4 or 6 or 8.
6. A reluctance machine rotor core according to claim 3, wherein: the rotor punching sheet is characterized in that a connection punching point (12) is formed on each of the first rotor punching sheet (1) and the second rotor punching sheet (2), the connection punching point (12) is provided with a matched outer convex part and an inner concave part, and the first rotor punching sheet (1) and/or the second rotor punching sheet (2) and/or the first rotor punching sheet (1) and the second rotor punching sheet (2) are connected through the connection punching point (12).
7. A reluctance machine rotor core according to claim 1, wherein: the first rotor punching sheet (1) and the second rotor punching sheets (2) are stacked in sequence and alternately.
8. A reluctance machine rotor core according to claim 1, wherein: the second magnetism isolating groove (26) is approximately in an open U shape.
9. A reluctance machine rotor core according to claim 1, wherein: the middle of part of the first magnetism isolating grooves (11) is separated.
10. A reluctance machine comprising a rotor core, characterized in that: the rotor core is a reluctance motor rotor core according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406048.4A CN112510868A (en) | 2020-12-03 | 2020-12-03 | Rotor core of reluctance motor and reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011406048.4A CN112510868A (en) | 2020-12-03 | 2020-12-03 | Rotor core of reluctance motor and reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112510868A true CN112510868A (en) | 2021-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011406048.4A Pending CN112510868A (en) | 2020-12-03 | 2020-12-03 | Rotor core of reluctance motor and reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112510868A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116827014A (en) * | 2023-06-21 | 2023-09-29 | 浙江大学 | Magnetic bridge type rotor structure for synchronous motor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250553A (en) * | 1997-03-13 | 2000-04-12 | 松下电器产业株式会社 | Rotor core for reluctance motor |
| US20010026108A1 (en) * | 2000-03-03 | 2001-10-04 | Fumio Tajima | Rotary machine and electrical vehicle using the same |
| JP2013172559A (en) * | 2012-02-21 | 2013-09-02 | Toyota Boshoku Corp | Rotor for synchronous reluctance motor |
| JP2014079068A (en) * | 2012-10-10 | 2014-05-01 | Daikin Ind Ltd | Rotor core and method for manufacturing the same |
| CN107733111A (en) * | 2017-11-01 | 2018-02-23 | 莱克电气股份有限公司 | Rotor iron core |
| CN110601396A (en) * | 2019-09-27 | 2019-12-20 | 珠海格力电器股份有限公司 | Motor rotor and synchronous reluctance motor |
| CN213693257U (en) * | 2020-12-03 | 2021-07-13 | 卧龙电气驱动集团股份有限公司 | A reluctance motor rotor core and reluctance motor |
-
2020
- 2020-12-03 CN CN202011406048.4A patent/CN112510868A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250553A (en) * | 1997-03-13 | 2000-04-12 | 松下电器产业株式会社 | Rotor core for reluctance motor |
| US20010026108A1 (en) * | 2000-03-03 | 2001-10-04 | Fumio Tajima | Rotary machine and electrical vehicle using the same |
| JP2013172559A (en) * | 2012-02-21 | 2013-09-02 | Toyota Boshoku Corp | Rotor for synchronous reluctance motor |
| JP2014079068A (en) * | 2012-10-10 | 2014-05-01 | Daikin Ind Ltd | Rotor core and method for manufacturing the same |
| CN107733111A (en) * | 2017-11-01 | 2018-02-23 | 莱克电气股份有限公司 | Rotor iron core |
| CN110601396A (en) * | 2019-09-27 | 2019-12-20 | 珠海格力电器股份有限公司 | Motor rotor and synchronous reluctance motor |
| CN213693257U (en) * | 2020-12-03 | 2021-07-13 | 卧龙电气驱动集团股份有限公司 | A reluctance motor rotor core and reluctance motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116827014A (en) * | 2023-06-21 | 2023-09-29 | 浙江大学 | Magnetic bridge type rotor structure for synchronous motor |
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