CN2327113Y - Rare-earth permanent magnet efficient synchronous electric motor - Google Patents
Rare-earth permanent magnet efficient synchronous electric motor Download PDFInfo
- Publication number
- CN2327113Y CN2327113Y CN 97228739 CN97228739U CN2327113Y CN 2327113 Y CN2327113 Y CN 2327113Y CN 97228739 CN97228739 CN 97228739 CN 97228739 U CN97228739 U CN 97228739U CN 2327113 Y CN2327113 Y CN 2327113Y
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- magnet steel
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- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to the field of motors, particularly a synchronous motor with an Nd-Fe-B permanent magnet, which is composed of a stator and a rotor. A stator core adopts an inclined slot structure, and a stator winding adopts Y-shaped connection. An air gap is decreased as small as possible under the precondition of ensuring reliable operation; a rotor core adopts a straight slot structure, the slot shape of the rotor adopts a single-cage closed slot, a magnetic steel slot is in a T-shaped structure, and a composite excitation magnetic circuit is composed of magnetic steel. The utility model not only has high power factor, strong overload capacity, high efficiency and conspicuous electric power saving, but also has self-starting ability; the utility model can run synchronously in a pulling mode with load and can replace an asynchronous motor directly.
Description
The utility model belongs to electric motors, particularly has the synchronous motor of neodymium iron boron permanent magnet.
Because Induction Motor Structure is simple, reliable operation, advantage such as cheap, the power of the last rotating machinery more than 75% in the world today all adopts it.But because it needs bigger exciting curent, power factor is low, and the not high shortcoming of middle and small motor efficient causes the electrical network utilance to descend, and electric energy fails to be fully used.Existing synchronous motor comprises that magnet steel adopts the synchronous motor of ferrite permanent-magnet materials, all exists following common shortcoming:
[1] motor itself can not start voluntarily, needs to take same leg speed to by starting device, could normally move.
[2] volume is big, Heavy Weight, cost height.
[3] there is the electric excitation type operation of contact unreliable.
[4] type spectrum, seat No. and the installation dimension of the most widely used y of China series asynchronous motor can not be adopted, promptly asynchronous motor can not be directly replaced.
As { ends of the earth claw-pole permanent magnet synchronous motor } that application number provides for 95225734.2 Chinese patent application, be axial excitation multi-polar structure, leakage field is big, and starting torque is little, and unsuitable rate of doing work motor is used.The patent of invention that Japan applies in China { is equipped with the permanent magnet synchronous motor of angular range detector }, and (application number 96190170.5) belongs to the brushless synchronous motor type, but needs by electronic starting device work.
The purpose of this utility model is to provide a kind of have self-starting ability, power factor height, efficient height, power saving rate height, and reliable operation can directly replace the rare earth permanent magnet high efficiency synchronous motor of asynchronous motor.
At above-mentioned purpose, and in conjunction with the accompanying drawings, be described in detail as follows to the technical scheme of the utility model rare earth permanent magnet high efficiency synchronous motor:
The utility model rare earth permanent magnet high efficiency synchronous motor is made up of stator and rotor, and stator comprises casing 1, stator core 2, stator slot 6 and stator winding 3; Rotor comprises starting cage 4, rotor core 5, rotor 7, magnet steel groove 8, magnet steel 9 and armature spindle 10.
Casing 1 adopts type spectrum, seat No. and the installation dimension of the most widely used Y series asynchronous motor of China, but does not adopt open type, for this reason, can directly replace asynchronous motor.
Stator winding 3 adopts Y shape to connect, and umber of turn reaches 0.85-0.95U with the induced potential that permanent magnetic field produces
N(rated voltage) is foundation.Owing to adopt Y shape to connect, reduced eddy current loss.
Air-gap between stator and rotor should reduce under the prerequisite that guarantees reliability service as far as possible, and because of the structure that the utility model adopted, vertically armature reaction is little, so air-gap can be as far as possible little.
Rotor core 5 adopts straight trough shape structure, forms with high magnetic conduction, low-loss silicon steel plate packing.
Magnet steel groove 8 in the rotor is a T shape structure, and magnet steel groove 8 is symmetrically distributed in the outside of armature spindle 10; Each magnet steel groove is placed three blocks of magnet steel, be magnet steel 11, magnet steel 12 and magnet steel 13, magnet steel 11 is placed in the radial slot of T shape magnet steel groove, and magnet steel 12 and magnet steel 13 are placed in the tangential slot of T shape magnet steel groove, be separated by the symmetrically two ends of the tangential slot that is distributed in T shape magnet steel groove of magnet steel 12 and magnet steel 13.Above-mentioned magnet steel adopts rare-earth Nd-Fe-B permanent magnetic material to make.From the structure of above-mentioned magnet steel groove and magnet steel as can be seen, the magnetic circuit of motor described in the utility model is the compound rectifier excitation magnetic circuit, can add magnet steel on the end face in case of necessity, form axial excitation, wherein magnet steel 11 is tangential excitation, and is parallel circuits, magnet steel 12, magnet steel 13 are excitation radially, are series circuit.Because this compound rectifier excitation magnetic circuit do not have isolation channel,, improved utilance and every magnetic flux under extremely of magnet steel greatly so leakage field is little; And can utilize parallel connection, series connection magnet steel coupling, be optimized design.With radially excitation series circuit of the prior art (accompanying drawing 2), (accompanying drawing 3) compare with Swastika word magnetic circuit (accompanying drawing 4) tangential excitation parallel circuits, leakage field is little, magnetic flux is big, and peak use rate that can the unit's of acquisition magnet steel has improved the energy index and the peak power output of motor.
Compared with prior art, the utlity model has following advantage:
(1) the utility model motor has enough torques of pulling in starting process, makes motor carry the operation of successfully pulling under the situation at band, and can move under High Power Factor, high overload ability.
(2) compare with the asynchronous motor of same model, efficient improves 5-9%, power factor improve reach 〉=30%, starting torque improves 30%, temperature rise descends 40 ℃.
(3) economize on electricity is remarkable, and power saving rate can reach more than the 12-15%.
(4) volume is little, and is in light weight, and reliable operation is installed and convenient in carrying.
(5) can directly replace asynchronous motor.
Description of drawings
Accompanying drawing 1 is the structural representation of this usefulness novel rare-earth permanent magnetism high efficiency synchronous motor.
Accompanying drawing 2 is a radially excitation series circuit schematic diagram of the prior art.
Accompanying drawing 3 is a tangential excitation parallel circuits schematic diagram of the prior art.
Accompanying drawing 4 has technology Zhong De Swastika word magnetic circuit schematic diagram for Xian.
In the accompanying drawing 1,1 is casing, and 2 is stator core, and 6 is stator slot, and 3 is stator winding, and 4 are the starting cage, and 5 is rotor core, and 7 is rotor, and 8 is the magnet steel groove, and 10 is armature spindle, and 11,12,13 is magnet steel, and 14 is tangential magnetic circuit, and 15 are magnetic circuit radially.
In accompanying drawing 2-accompanying drawing 4,16 is isolation channel, and 17 is magnet steel, and 18 is the leakage field district.
Claims (4)
1, a kind of rare earth permanent magnet high efficiency synchronous motor is made up of stator and rotor, and stator comprises casing (1), stator core (2), stator slot (6) and stator winding (3); Rotor comprises starting cage (4), rotor core (5), rotor (7), magnet steel groove (8), magnet steel (9) and armature spindle (10), it is characterized in that:
[1] casing (1) adopts type spectrum, seat No. and the installation dimension of y series asynchronous motor, and does not adopt open type;
[2] stator slot (6) is a flume structure;
[3] stator winding (3) adopts y-shaped connection, and umber of turn reaches 0.85-0.95U with the induced potential that permanent magnetic field produces
NBe foundation;
[4] rotor core (5) adopts the straight trough structure;
[5] rotor slot shape (6) is selected single cage groove structure of remaining silent for use;
[6] magnet steel groove (8) is a T shape structure, is symmetrically distributed in the outside of armature spindle (10);
[7] placed three blocks of magnet steel in each magnet steel groove (8), i.e. magnet steel (11), magnet steel (12), magnet steel (13), magnet steel (11) is placed in the radial slot of T shape magnet steel groove (8), and magnet steel (12,13) is placed in the tangential slot of magnet steel groove (8).
2, motor according to claim 1 is characterized in that magnet steel (11) for tangential excitation, and magnet steel (12) magnet steel (13) is excitation radially.
3, motor according to claim 1 is characterized in that magnet steel is that rare-earth Nd-Fe-B permanent magnetic material is made.
4, motor according to claim 1 is characterized in that stator core (2) and rotor core (5) all adopt high magnetic conduction low-loss silicon steel sheet to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228739 CN2327113Y (en) | 1997-10-17 | 1997-10-17 | Rare-earth permanent magnet efficient synchronous electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97228739 CN2327113Y (en) | 1997-10-17 | 1997-10-17 | Rare-earth permanent magnet efficient synchronous electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2327113Y true CN2327113Y (en) | 1999-06-30 |
Family
ID=33941825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97228739 Expired - Fee Related CN2327113Y (en) | 1997-10-17 | 1997-10-17 | Rare-earth permanent magnet efficient synchronous electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2327113Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593986A (en) * | 2012-03-15 | 2012-07-18 | 岳群生 | Rotor of line-start permanent magnetic synchronous motor |
| CN102891555A (en) * | 2012-10-11 | 2013-01-23 | 无锡市亨达电机有限公司 | Dual-purpose three-phase permanent magnet synchronous motor rotor structure for power frequency and frequency conversion control |
| CN105958750A (en) * | 2016-05-11 | 2016-09-21 | 山东理工大学 | Method of producing double-radial composite magnetic field hub drive motor rotor |
| CN105958749A (en) * | 2016-05-11 | 2016-09-21 | 山东理工大学 | Method of producing combined permanent-magnetic pole and electromagnetic hybrid excitation generator rotor |
| CN105958773A (en) * | 2016-05-11 | 2016-09-21 | 山东理工大学 | Combined magnetic pole permanent magnet generator with vacuum pump |
| CN109639000A (en) * | 2018-12-20 | 2019-04-16 | 卧龙电气南阳防爆集团股份有限公司 | A kind of 1 grade of efficiency flame-proof type asynchronous starting three-phase permanent-magnetic synchronous motors |
| CN110299812A (en) * | 2019-07-08 | 2019-10-01 | 哈尔滨理工大学 | A kind of cryogenic pump permanent magnet motor structure |
-
1997
- 1997-10-17 CN CN 97228739 patent/CN2327113Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593986A (en) * | 2012-03-15 | 2012-07-18 | 岳群生 | Rotor of line-start permanent magnetic synchronous motor |
| CN102891555A (en) * | 2012-10-11 | 2013-01-23 | 无锡市亨达电机有限公司 | Dual-purpose three-phase permanent magnet synchronous motor rotor structure for power frequency and frequency conversion control |
| CN105958750A (en) * | 2016-05-11 | 2016-09-21 | 山东理工大学 | Method of producing double-radial composite magnetic field hub drive motor rotor |
| CN105958749A (en) * | 2016-05-11 | 2016-09-21 | 山东理工大学 | Method of producing combined permanent-magnetic pole and electromagnetic hybrid excitation generator rotor |
| CN105958773A (en) * | 2016-05-11 | 2016-09-21 | 山东理工大学 | Combined magnetic pole permanent magnet generator with vacuum pump |
| CN105958749B (en) * | 2016-05-11 | 2018-11-02 | 山东理工大学 | Combination type permanent-magnet magnetic pole and electromagnetic mixed exciting generator method for production of rotor |
| CN105958773B (en) * | 2016-05-11 | 2018-12-11 | 山东理工大学 | Combined magnetic pole magneto generator with vacuum pump |
| CN109639000A (en) * | 2018-12-20 | 2019-04-16 | 卧龙电气南阳防爆集团股份有限公司 | A kind of 1 grade of efficiency flame-proof type asynchronous starting three-phase permanent-magnetic synchronous motors |
| CN110299812A (en) * | 2019-07-08 | 2019-10-01 | 哈尔滨理工大学 | A kind of cryogenic pump permanent magnet motor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |