CN2744055Y - Medium frequency high-speed small permanent magnet AC synchronous motor - Google Patents
Medium frequency high-speed small permanent magnet AC synchronous motor Download PDFInfo
- Publication number
- CN2744055Y CN2744055Y CN 200420111124 CN200420111124U CN2744055Y CN 2744055 Y CN2744055 Y CN 2744055Y CN 200420111124 CN200420111124 CN 200420111124 CN 200420111124 U CN200420111124 U CN 200420111124U CN 2744055 Y CN2744055 Y CN 2744055Y
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- permanent magnet
- synchronous motor
- iron core
- stator
- frequency high
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- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The utility model discloses a medium frequency high-speed small permanent magnet AC synchronous motor which belongs to the technical field of the permanent magnetism AC synchronous motor and mainly solves the problem that a plurality of medium frequency asynchronous motors with different rotation speeds used in the existing textile industry directly affect the quality of the product and increase the defective index. The utility model is characterized in that the medium frequency high-speed small permanent magnet AC synchronous motor comprises a casing, stators and solid rotors, and the iron core of each rotor is symmetrically provided with an empty groove and a permanent magnet groove in which a permanent magnet is embedded; a magnetism separating cover is arranged among the iron core, the permanent magnet and the rotary shaft, and the permanent magnet is provided with a groove wedge made of non-magnetic material; two ends of the iron core are provided with a ring type baffle made of non-magnetic material; the number of the stator grooves are fractional, an iron core lamination chip is skew in a certain distance along the shaft to form a skew groove, and the stator winding is a short pitch double-deck winding. The utility model is characterized in that a plurality of motors are operated synchronously with high efficiency and power factor when supplied by the same power source. The utility model is mainly used for spinning and weaving machine set in textile industry.
Description
Technical field
The utility model relates to permanent magnet ac synchronous motor, particularly a kind of intermediate frequency high-speed small-size permanent magnet ac synchronous motor.Belong to the permanent magnet ac synchronous motor technical field.
Background technology
At present, textile industry adopts in a large number that rotating speed is about 8320r/min, power output is the intermediate frequency asynchronous motor of 150W, 100W, just uses nearly 100～300 motors as a unit, every motor yarn of pulling or a chemical fibre silk.Although the number of poles of each intermediate frequency asynchronous motor is the same, the impossible platform platform of its revolutional slip is identical, and each motor actual speed is also inconsistent, and its weak point is directly to influence product quality, increases percent defective.When changing ingot (or jar), the unit parking needs quick shutdown; but the intermediate frequency asynchronous motor needs about 80～90 seconds ability to shut down, and has both made and has installed the counter-rotating brake apparatus additional, and motor still needs about 35～40 seconds ability to shut down; its weak point is that downtime is still long, and has increased the volume of motor.The intermediate frequency asynchronous motor is owing to run on intermediate frequency, and motor belongs to small-sized again, thereby has efficient and the lower weak point of power factor.The asynchronous machine of 150W after tested, its efficient is 73%, power factor is 0.89.Existing triphase synchronous motor, loss is little, efficient is high though have, the characteristics that power factor is high, but its overwhelming majority is power frequency (50Hz), the slow-speed of revolution (rotating speed is many at 1500r/min and following), multiple electric motors will guarantee asynchronous starting and don't use frequency converter, particularly be subjected to former used asynchronous machine size restrictions dimensionally, permanent magnet and starting winding can't be installed simultaneously, thereby can not be used for textile industry.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of intermediate frequency high-speed small-size permanent magnet ac synchronous motor that is used for textile industry at above-mentioned weak point.
Technical solution of the present utility model is: a kind of intermediate frequency high-speed small-size permanent magnet ac synchronous motor, comprise housing, stator and rotor, and it is characterized in that: described rotor is a solid rotor; Symmetry has permanent magnet trough and dead slot on the iron core of this solid rotor, and permanent magnet trough is embedded with permanent magnet; Be provided with magnetic shield between iron core and permanent magnet and the rotating shaft; Permanent magnet is provided with the slot wedge of being made by nonmagnetic substance; Two ends unshakable in one's determination are provided with circular ring type nonmagnetic substance plate washer; Number of stator slots adopts fractional-slot, and its core lamination forms skewed slot along axle skew certain distance, and stator winding is double-deck short distance winding.
Permanent magnet trough described in the technical solution of the present utility model and dead slot can be " ten " font and be distributed on the iron core; The same pole-face of the permanent magnet in two permanent magnet trough is adjacent; Stator adopts 15 grooves.
Permanent magnet described in the technical solution of the present utility model can be sintered Nd-Fe-B permanent magnet.
The utility model is owing to the rotor design with permanent magnet ac synchronous motor becomes solid rotor, and on the iron core of solid rotor, have corresponding permanent magnet trough and dead slot according to the motor pole number symmetry, permanent magnet is embedded in the permanent magnet trough, between iron core and permanent magnet and rotating shaft, establish magnetic shield, axial outer end at permanent magnet is provided with the slot wedge of being made by nonmagnetic substance, be provided with circular ring type nonmagnetic substance baffle plate at two ends unshakable in one's determination, stator-core lamination is formed skewed slot along axle skew certain distance, and employing fractional-slot, stator winding is that Y connects double-deck short distance winding, thereby the magnetic flux under pole span is provided by adjacent two magnetic pole parallel connections, can obtain bigger every utmost point magnetic flux; Dead slot can increase hands over axle magnetic circuit magnetic resistance, reduces armature reaction, reduces demagnetizing effect, has also improved the operation stability simultaneously; The end face of having sealed permanent magnet and slot wedge two ends makes it fixing, again can be every magnetic; End ring tightly links to each other with slot wedge, forms simple winding naturally, promptly helps starting, and damping function is arranged again; Weaken the higher harmonic components in electromotive force and the magnetomotive force effectively, skewed stator slot is the reduced harmonic component also.The utlity model has multiple electric motors accurately synchronous operation under the situation of same power supply power supply, need not the plugging device and can reach 30 seconds, be mainly used in textile industry and spin the unit of weaving cotton cloth with the high characteristics of interior shutdown, efficient and power factor.
Description of drawings
Fig. 1 is the structural representation of the utility model rotor; Fig. 2 is the partial left TV structure schematic diagram of Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2.2 utmost point pole rotors are solid rotor, adopt built-in tangential formula magnetic structure.The unitary solid rotor adopts low-silicon steel to make, and places permanent magnet by tangential magnetic structure fluting, and the magnetic flux under pole span is provided by adjacent two magnetic pole parallel connections, can obtain bigger every utmost point magnetic flux.Be symmetrical arranged dead slot at d-axis, increase and hand over axle magnetic circuit magnetic resistance, reduce armature reaction, reduce demagnetizing effect, also improved operation stability simultaneously.Unshakable in one's determination 3 are made by low-silicon steel, are " one " font symmetry and have two permanent magnet trough 1, and the homopolarity that permanent magnet trough 1 is embedded with permanent magnet 2, two permanent magnets 2 that high magnetic Nd-Fe-B magnet steel material makes is adjacent.Symmetry has dead slot 4 on unshakable in one's determination 3, and dead slot 4 is vertical with permanent magnet trough 1.
Tangential structure magnetic leakage factor is bigger, must take necessary every the magnetic measure.The one, between rotating shaft 6 and unshakable in one's determination 3, install magnetic shield 5 additional; The 2nd, rotor slot wedge 7 is made by nonmagnetic substance; The 3rd, install circular ring type plate washer 8 additional at 3 two ends unshakable in one's determination, plate washer 8 is made by nonmagnetic substance, has both sealed the end face at permanent magnet 2 and slot wedge 7 two ends, again can be every magnetic.Plate washer 8 tightly links to each other with slot wedge 7, forms simple winding naturally, has both helped starting, and damping function is arranged again.Stator adopts fractional-slot, and its core lamination is along axle skew certain distance.
Stator core cold-reduced silicon sheet punching out, the groove number adopts fractional-slot, and stator 15 grooves, stator winding are that Y connects double-deck short distance winding.Stator selects 15 grooves to make every extremely every phase groove number=5/2, and denominator is 2 can eliminate the mark subharmonic.Skewed stator slot also is for the reduced harmonic component.These measures are necessary for electric motor starting and minimizing supplementary load loss.Permanent magnet material sintered NdFeB, classification are ultra-high coercive force (UH class), and allowing working temperature is 180 ℃.
To the utility model 150W magneto test, efficient is 90% as a result, power factor reaches 0.92.Obviously its integrated power-saving rate (meritorious and idle) is very high, has realized energy-efficient.The existing relatively triphase synchronous motor of the utility model, have the body kind little, do not have starting winding characteristics consistent with the multiple electric motors rotating speed.
Claims (3)
1, a kind of intermediate frequency high-speed small-size permanent magnet ac synchronous motor comprises housing, stator and rotor, it is characterized in that: described rotor is a solid rotor; The iron core of this solid rotor (3) is gone up symmetry and is had permanent magnet trough (1) and dead slot (4), and permanent magnet trough (1) is embedded with permanent magnet (2); Be provided with magnetic shield (5) between (3) unshakable in one's determination and permanent magnet (2) and the rotating shaft (6); Permanent magnet (2) is provided with the slot wedge of being made by nonmagnetic substance (7); (3) two ends unshakable in one's determination are provided with circular ring type nonmagnetic substance plate washer (8); Number of stator slots adopts fractional-slot, and its core lamination forms skewed slot along axle skew certain distance, and stator winding is double-deck short distance winding.
2, a kind of intermediate frequency high-speed small-size permanent magnet ac synchronous motor according to claim 1 is characterized in that: described permanent magnet trough (1) is " ten " font with dead slot (4) and is distributed on the iron core (3); The same pole-face of the permanent magnet (2) in two permanent magnet trough (1) is adjacent; Stator adopts 15 grooves.
3, a kind of intermediate frequency high-speed small-size permanent magnet ac synchronous motor according to claim 1 and 2, it is characterized in that: described permanent magnet (2) is a sintered Nd-Fe-B permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420111124 CN2744055Y (en) | 2004-10-27 | 2004-10-27 | Medium frequency high-speed small permanent magnet AC synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420111124 CN2744055Y (en) | 2004-10-27 | 2004-10-27 | Medium frequency high-speed small permanent magnet AC synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2744055Y true CN2744055Y (en) | 2005-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420111124 Expired - Lifetime CN2744055Y (en) | 2004-10-27 | 2004-10-27 | Medium frequency high-speed small permanent magnet AC synchronous motor |
Country Status (1)
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| CN (1) | CN2744055Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697443A (en) * | 2009-10-30 | 2010-04-21 | 无锡新大力电机有限公司 | Rotor terminal structure of three-phase permanent magnet synchronous motor |
| CN102570666A (en) * | 2012-01-22 | 2012-07-11 | 浙江大学 | Tangential permanent magnet synchronous motor rotor structure |
| CN103023171A (en) * | 2012-11-21 | 2013-04-03 | 南昌康富电机技术有限公司 | Marine single-phase taper power generator |
| CN101860100B (en) * | 2009-04-08 | 2013-12-18 | 金亦石 | Permanent magnetic synchronous motor |
| CN106451973A (en) * | 2016-11-30 | 2017-02-22 | 江苏久知电机技术有限公司 | Three-phase permanent magnet synchronous motor special for loom |
| CN108649766A (en) * | 2018-05-17 | 2018-10-12 | 大连创为电机有限公司 | The hybrid synchronous motor of non-salient pole salient pole |
| CN112994305A (en) * | 2021-04-02 | 2021-06-18 | 沈阳工业大学 | High-efficiency flat permanent magnet torque motor |
-
2004
- 2004-10-27 CN CN 200420111124 patent/CN2744055Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860100B (en) * | 2009-04-08 | 2013-12-18 | 金亦石 | Permanent magnetic synchronous motor |
| CN101697443A (en) * | 2009-10-30 | 2010-04-21 | 无锡新大力电机有限公司 | Rotor terminal structure of three-phase permanent magnet synchronous motor |
| CN102570666A (en) * | 2012-01-22 | 2012-07-11 | 浙江大学 | Tangential permanent magnet synchronous motor rotor structure |
| CN103023171A (en) * | 2012-11-21 | 2013-04-03 | 南昌康富电机技术有限公司 | Marine single-phase taper power generator |
| CN106451973A (en) * | 2016-11-30 | 2017-02-22 | 江苏久知电机技术有限公司 | Three-phase permanent magnet synchronous motor special for loom |
| CN108649766A (en) * | 2018-05-17 | 2018-10-12 | 大连创为电机有限公司 | The hybrid synchronous motor of non-salient pole salient pole |
| CN112994305A (en) * | 2021-04-02 | 2021-06-18 | 沈阳工业大学 | High-efficiency flat permanent magnet torque motor |
| CN112994305B (en) * | 2021-04-02 | 2024-02-06 | 沈阳工业大学 | High-efficiency flat permanent magnet torque motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XIANGYANG YUQING TRANSMISSION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: XIANGFAN SPECIAL MOTOR CO., LTD. Effective date: 20110715 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 441002 NO. 232, RENMIN ROAD, XIANGFAN CITY, HUBEI PROVINCE TO: 441058 NO. 5, XINXING ROAD, HIGH-TECH. DEVELOPMENT ZONE, XIANGYANG CITY, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110715 Address after: 441058 No. 5 Xinxing Road, hi tech Development Zone, Hubei, Xiangyang Patentee after: Xiangyang Yuqing Transmission Technology Co., Ltd. Address before: 441002 No. 232 Renmin Road, Hubei, Xiangfan Patentee before: Xiangfan Special Motor Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141027 Granted publication date: 20051130 |