CN116345749A - Magnetic pole structure of marine permanent magnet motor - Google Patents
Magnetic pole structure of marine permanent magnet motor Download PDFInfo
- Publication number
- CN116345749A CN116345749A CN202310290413.7A CN202310290413A CN116345749A CN 116345749 A CN116345749 A CN 116345749A CN 202310290413 A CN202310290413 A CN 202310290413A CN 116345749 A CN116345749 A CN 116345749A
- Authority
- CN
- China
- Prior art keywords
- magnetic pole
- permanent magnet
- rotor
- pole
- magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 229920006335 epoxy glue Polymers 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 9
- 239000003595 mist Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a magnetic pole structure of an offshore permanent magnet motor, which consists of a permanent magnet, a magnetic pole pressing block, a magnetic pole skin and a magnetic pole baffle plate, wherein the permanent magnet is pressed on the surface of a rotor through the magnetic pole skin, the magnetic pole skin and the permanent magnet are fixed on the rotor through the magnetic pole pressing block by using epoxy glue to be encapsulated into a whole; the invention solves the problems of processing cost and magnetic leakage increase caused by the magnetic pole box structure and the performance reduction of the motor, ensures the sealing performance and enough structural strength of the magnetic steel, and can be widely applied to the field of permanent magnet wind power generation.
Description
Technical Field
The invention belongs to the technical field of wind power generation, and particularly relates to a magnetic pole structure of an offshore permanent magnet motor.
Background
The marine permanent magnet motor is affected by salt mist, oil mist and wet mist due to severe running environment, has higher protection requirement on magnetic poles, otherwise, faults such as rust and even falling of permanent magnets can occur, and further the performance and service life of the motor are affected.
At present, the common magnetic pole structure types of the offshore permanent magnet motor are as follows: the permanent magnet and the magnetic pole pull rod are arranged in a magnetic pole box formed by laminating magnetic pole punching sheets, and the magnetic pole pull rod is provided with a threaded hole. The rotor is provided with a groove, and the magnetic pole box is designed to be matched with the groove. When the permanent magnet is installed, the magnetic pole is pressed in along the groove of the rotor along with the permanent magnet and the magnetic pole pull rod, and the permanent magnet magnetic pole is fixed on the rotor through the bolt and the magnetic pole pull rod.
The method has the defects that the processing cost is increased due to the magnetic pole box and the rotor groove, and in addition, the magnetic leakage of the permanent magnet is increased due to the magnetic pole box which is a magnetic conduction part, so that the motor performance is reduced.
Disclosure of Invention
The invention aims to provide a magnetic pole structure of an offshore permanent magnet motor, which reduces manufacturing cost on the premise of ensuring sealing performance and structural strength of magnetic steel.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an offshore permanent magnet motor's magnetic pole structure, includes two magnetic pole baffles of installing on the rotor and divide into a plurality of whole annular structure magnetic pole skins of arranging between the magnetic pole baffles along the axial, and the outer peripheral face of ring is provided with interior concave part and outer convex part in turn, and the pole briquetting outside the interior concave part has been inlayed to the interior concave part outside, and the permanent magnet in the ring has been inlayed to the outer convex part inboard, and the magnetic pole baffle is installed in the permanent magnet both sides axially, the permanent magnet pass through the magnetic pole skin by the pole briquetting and fix at the rotor surface, the clearance between permanent magnet and the magnetic pole skin forms integrated structure through whole embedment epoxy glue solidification's mode.
The magnetic pole skin of the magnetic pole structure of the marine permanent magnet motor is formed by stamping a glass fiber composite material.
In the magnetic pole structure of the offshore permanent magnet motor, the magnetic pole pressing block is fixedly connected with the rotor through a bolt.
The number of the magnetic pole skins of the magnetic pole structure of the offshore permanent magnet motor is 5.
The beneficial effects of the invention are as follows: the magnetic pole skin is stamped by the glass fiber composite material to form convex-concave shapes matched with the permanent magnets and the pressing blocks in number along the circumferential direction, the magnetic pole pressing blocks are arranged on the outer sides of the magnetic pole skin and are connected with the rotor through bolts, the permanent magnets are arranged in convex spaces corresponding to the cross section shapes of the magnetic pole skin and the magnetic pole pressing blocks, and gaps between the magnetic pole skin and the permanent magnets form an integrated structure in an integral filling and sealing curing mode, so that the magnetic pole structure has good sealing performance and structural strength, meanwhile, compared with a magnetic pole box, the manufacturing of the magnetic pole skin and the magnetic pole pressing blocks is simpler, the processing cost can be reduced, no magnetic conduction part is wrapped on the outer sides of the permanent magnets, the magnetic leakage can be reduced, and the motor performance is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
fig. 3 is a schematic view of the structure of the pole skin of the present invention.
The reference numerals are as follows: 1-magnetic pole baffle plate, 2-magnetic pole skin, 3-magnetic pole pressing block and 4-permanent magnet.
Description of the embodiments
The following description of the embodiments of the invention is presented in conjunction with the drawings and examples to provide a better understanding of the invention to those skilled in the art.
Referring to fig. 1, 2 and 3, the magnetic pole structure of the marine permanent magnet motor disclosed by the invention comprises a magnetic pole baffle plate 1, a magnetic pole cover 2, a magnetic pole pressing block 3 and a permanent magnet 4, wherein the outer peripheral surface of a circular ring of the magnetic pole cover 2 is alternately provided with an inner concave part and an outer convex part which are matched with the permanent magnet 4 and the magnetic pole pressing block 3 in number, the magnetic pole pressing block 3 outside the ring is embedded outside the inner concave part, the permanent magnet 4 is embedded inside the outer convex part, the rotor comprises an outer magnetic pole cover 2, the magnetic pole pressing block 3, the permanent magnet 4, an inner rotor bracket and a rotating shaft, the magnetic pole baffle plate 1 is axially arranged at two sides of the permanent magnet 4, the permanent magnet 4 is fixed on the outer surface of the rotor by the magnetic pole pressing block 3 through the magnetic pole cover 2, and a gap between the permanent magnet 4 and the magnetic pole cover 2 forms an integral structure through an integral encapsulation curing mode.
In actual use, firstly, one side of the magnetic pole baffle plate 1 is installed on the rotor, the magnetic pole skin 2 is formed by stamping a glass fiber composite material, the magnetic pole baffle plate is preinstalled on the rotor through the magnetic pole pressing block 3, then the permanent magnet 4 is plugged into a cavity formed by the magnetic pole skin 2 and the surface of the rotor, the magnetic pole pressing block 3 is fixedly connected with the rotor through a bolt, and finally, epoxy glue is cast at a gap between the magnetic pole skin 2 and the permanent magnet 4 to form a whole, and then the other side of the axial baffle plate 1 is installed.
Compared with the background art, the magnetic pole structure solves the problems of cost and motor performance reduction caused by the magnetic pole box structure commonly used in the current offshore permanent magnet motor, ensures the sealing performance and structural strength of the magnetic steel, and can be widely applied to the field of offshore wind turbines.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. The utility model provides a magnetic pole structure of marine permanent magnet machine which characterized in that: the permanent magnet rotor comprises two magnetic pole baffles (1) arranged on a rotor and a plurality of annular structure magnetic pole skins (2) axially arranged between the magnetic pole baffles (1), wherein an inner concave part and an outer convex part are alternately arranged on the outer peripheral surface of a ring, a magnetic pole pressing block (3) is embedded in the outer side of the inner concave part, a permanent magnet (4) is embedded in the inner side of the outer convex part, the permanent magnet (4) is fixed on the outer surface of the rotor through the magnetic pole skins (2) by the magnetic pole pressing block (3), and gaps between the permanent magnet (4) and the magnetic pole skins (2) are integrally encapsulated and solidified by epoxy glue.
2. The pole structure of an offshore permanent magnet motor according to claim 1, wherein the pole skin (2) is formed by stamping a glass fiber composite material.
3. A pole structure of an offshore permanent magnet machine according to claim 1 or 2, characterized in that the pole press block (3) is fixed to the rotor by means of a bolt connection.
4. A pole structure of an offshore permanent magnet machine according to claim 3, characterized in that there are 5 pole covers (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310290413.7A CN116345749A (en) | 2023-03-23 | 2023-03-23 | Magnetic pole structure of marine permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310290413.7A CN116345749A (en) | 2023-03-23 | 2023-03-23 | Magnetic pole structure of marine permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116345749A true CN116345749A (en) | 2023-06-27 |
Family
ID=86887317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310290413.7A Pending CN116345749A (en) | 2023-03-23 | 2023-03-23 | Magnetic pole structure of marine permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116345749A (en) |
-
2023
- 2023-03-23 CN CN202310290413.7A patent/CN116345749A/en active Pending
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |