CN2128798Y - Permanent-magnet salient pole synchronous motor rotor - Google Patents
Permanent-magnet salient pole synchronous motor rotor Download PDFInfo
- Publication number
- CN2128798Y CN2128798Y CN 92230717 CN92230717U CN2128798Y CN 2128798 Y CN2128798 Y CN 2128798Y CN 92230717 CN92230717 CN 92230717 CN 92230717 U CN92230717 U CN 92230717U CN 2128798 Y CN2128798 Y CN 2128798Y
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- synchronous motor
- permanent
- rotor
- pole shoe
- 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.)
- Expired - Lifetime
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a permanent-magnet salient pole synchronous motor rotor. A magnetic yoke is arranged on an axis, a permanent magnet is fixed to the lateral wall of the magnetic yoke, and a laminated pole shoe is fixed on the permanent magnet, so the utility model has the advantages of simple structure, high reliability, easy fabrication, high efficiency, material saving, low cost, and low eddy current loss, increasing the magnetic stability of the permanent magnet.
Description
The utility model relates to a kind of rotor that the synchronous motor of permanent magnet is arranged.
In known technology, the rotor structure of permanent magnet synchronous motor is that permanent magnet is fixed on the cylindricality yoke surfaces, the magnetic pole that is rotor is that the magnetic material of entity is made, under applied voltage, stator armature produces rotating magnetic field, thereby attracts to have the rotor rotation of permanent magnet, this structure is compared with permanent magnet with common synchronous motor formerly and has been replaced the rotor winding, not only saved material, and magnetic field intensity strengthened, but brought magnetic field of permanent magnet to be subjected to stator field to disturb strong problem.
The rotor that also has a kind of permanent magnet synchronous motor is a convex magnetic pole band entity pole shoe, it is compared with the rotor of the permanent magnet synchronous motor of no pole shoe, overcome direct and air-gap field connection, and under action of alternating magnetic field, influenced the problem of permanent magnet magnetic stability because of permanent magnet.But this structure is in than heavy-duty motor, and the entity pole shoe under the stator field effect, produces a large amount of eddy current, thereby will generate heat, and the electric efficiency life-span is reduced greatly.
It is a kind of that the purpose of this utility model is to provide, and can reduce the eddy current that produces in the pole shoe in more powerful motor, overcomes the new permanent magnetism salient-pole synchronous motor rotor of the problem of rotor heating.
The utility model is achieved in that permanent magnet is fixed on the lateral wall of yoke 3 on the rotor with coaxial extension protrusion axle of cylinder body shape, is fixing the pole shoe identical with number of poles on the permanent magnet, and pole shoe is overrided to form for the ferromagnetic material thin slice.
Advantage of the present utility model is: simple in structure, reliable, easily manufactured, because pole shoe has adopted lamination, the eddy current loss of pole shoe is reduced greatly, thereby raise the efficiency, the more important thing is the magnetic stability that has improved permanent magnet, prolonged the life-span of motor.
Description of drawings is as follows:
Fig. 1, be that the A-A of rotor is to cutaway view
Fig. 2, be the axis projection figure of rotor
Fig. 3, be the laminate shape of pole shoe
Fig. 4, be the laminate shape of pole shoe
Fig. 5, be the laminate shape of pole shoe
In conjunction with the accompanying drawings, describe structure of the present utility model in detail.Rotor among Fig. 1 is to do yoke 3 with solid steel to be enclosed within on the axle 1, with screw 2 permanent magnet 5 and pole shoe 4 are fixed, pole shoe laminates with the ferromagnetic material thin slice, and fixing with rivet 6, arc this that removes two angles that the laminate shape of pole shoe such as Fig. 3 are represented is preferred embodiment of the utility model.
The utility model can also be used other embodiments, and promptly electrical sheet laminates into yoke 3, is contained on the axle 1 with the key connected mode, and permanent magnet 5 and pole shoe 4 can be fixed or bonding or welding manner is fixed on the yoke with rivet.The material of yoke can also be a zero carbon steel, and the fixed form of pole shoe can be to be screwed or bonding or welding manner is fixed.The laminate shape of pole shoe can also be Fig. 4 represented remove the arc of an angle or the bowed shape represented as Fig. 5.
The utility model has adopted lamination because of the pole shoe of rotor, and is insulated from each other between sheet, and resistance strengthens, and under same action of alternating magnetic field, eddy current reduces.Make eddy current loss with eddy current square be directly proportional reduce.
In addition, the pole shoe of rotor adopts lamination, and the magnetic loss of permanent magnet is reduced, and temperature reduces, and reaches the purpose that improves permanent magnet magnetic stability.
Claims (1)
1, a kind of permanent magnetism salient-pole synchronous motor rotor, it is by cylinder body shape, with the axle 1 of coaxial extension protrusion and the rotor of yoke 3, permanent magnet 5 is fixed on the lateral wall of yoke 3, it is characterized in that having fixed on the described permanent magnet 5 pole shoe 4 that ferromagnetic thin slice press-fits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230717 CN2128798Y (en) | 1992-08-22 | 1992-08-22 | Permanent-magnet salient pole synchronous motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92230717 CN2128798Y (en) | 1992-08-22 | 1992-08-22 | Permanent-magnet salient pole synchronous motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2128798Y true CN2128798Y (en) | 1993-03-24 |
Family
ID=33773768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92230717 Expired - Lifetime CN2128798Y (en) | 1992-08-22 | 1992-08-22 | Permanent-magnet salient pole synchronous motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2128798Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7755243B2 (en) | 2006-08-08 | 2010-07-13 | Toyota Jidosha Kabushiki Kaisha | Rotating electric machine |
| CN102497047A (en) * | 2011-11-15 | 2012-06-13 | 中电电机股份有限公司 | Novel permanent magnetism auxiliary exciter rotor structure |
-
1992
- 1992-08-22 CN CN 92230717 patent/CN2128798Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7755243B2 (en) | 2006-08-08 | 2010-07-13 | Toyota Jidosha Kabushiki Kaisha | Rotating electric machine |
| CN101123370B (en) * | 2006-08-08 | 2011-04-06 | 丰田自动车株式会社 | Electric rotating motor |
| CN102497047A (en) * | 2011-11-15 | 2012-06-13 | 中电电机股份有限公司 | Novel permanent magnetism auxiliary exciter rotor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: TIANJIN ELECTRICAL MACHINERY GENERAL FACTORY TO: TIANJIN SIBOTAIKE DIVING ELECTRIC PUMP CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Siboteke Submerged Electric Pump Co., Ltd., Tianjin Patentee before: Tianjin Electrical Motor General Plant |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |