CN203135671U - High-speed permanent magnet synchronous motor - Google Patents
High-speed permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN203135671U CN203135671U CN 201320132616 CN201320132616U CN203135671U CN 203135671 U CN203135671 U CN 203135671U CN 201320132616 CN201320132616 CN 201320132616 CN 201320132616 U CN201320132616 U CN 201320132616U CN 203135671 U CN203135671 U CN 203135671U
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- rotor
- permanent magnet
- synchronous motor
- sleeve
- motor
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Abstract
The utility model discloses a high-speed permanent magnet synchronous motor. The motor comprises a motor shell, a motor stator, a main shaft rotor assembly and a pair of bearing assemblies which are arranged at the front and back ends of the shell respectively. The motor stator is fixed in the motor shell. The main shaft rotor assembly is sleeved in the motor stator. Two ends of the main shaft rotor assembly are supported on the shell through the bearing assemblies. The main shaft rotor assembly comprises a rotor front half shaft, a rotor permanent magnet, a rotor sleeve and a rotor back half shaft. The rotor permanent magnet is sleeved in the rotor sleeve. One end of the rotor sleeve is fixedly connected with the rotor front half shaft, and the other end of the rotor sleeve is fixedly connected with the rotor back half shaft. The high-speed permanent magnet synchronous motor has the advantages of compact structure, full utilization of space and small radial dimension and is especially suitable for the need of a high rotation speed.
Description
Technical field
The utility model relates to motor device, relates in particular to a kind of high-speed permanent magnetic synchronous motor.
Background technology
Permagnetic synchronous motor has obtained extensive use owing to compact conformation, power density height, high efficiency, energy-saving and cost-reducing remarkable benefit in fields such as motor, generators.In recent years, industrial circle is more and more urgent to utilizing permagnetic synchronous motor directly to drive the demand of equipment of loaded work piece, directly drives high-speed turbine generator of magneto generating etc. as the air compressor of the direct drives impeller work of magneto, electric main shaft of digital control machine tool, the turbine that magneto directly drives emery wheel or cutter.The extensive use of the straight drive apparatus of these magnetoes will produce immeasurable energy-saving benefit.
The said equipment utilizes the direct drive principle work of magneto, only competence exertion effect under the very high condition of magneto working speed, and existing rotor structure for permanent magnet motor is difficult to satisfy the needs that run up.
Existing motor rotor construction mainly can be divided into two classes, and a class is that rotor is the hollow cylinder overall structure, directly is sleeved on the main shaft; Another kind ofly be rotor permanent magnetism body surface card or be embedded on the main shaft cylindrical.The common deficiency of this dual mode is that the space that rotor permanent magnet distributes is shared by main shaft, and space utilization efficient is low.
Under high speed conditions, rotor centrifugal force is very big, and rotor can expand distortion.This distortion causes the actual magnitude of interference between rotor inner hole and the main shaft to reduce, and coupling stiffness reduces, and the circumferential slip of rotor on main shaft takes place easily, even security incident takes place.If increase the magnitude of interference between rotor inner hole and the main shaft, can cause installing difficulty, easily cause the permanent magnet demagnetization because adopting the dressing of rotor heating collar, and not by hot cover process, because permanent magnet fragility is big, just be damaged at assembling stage easily again.
Centrifugal force is to the influence of the mechanical strength of rotor own when considering high speed, and rotor diameter should be as far as possible little.But in order to improve the intensity of axis system, rotor inner hole often requires big as far as possible again.Require greatly at rotor inner hole, external diameter requires under the little constraints, and the rotor Electromagnetic Design is very difficult, and adjustable space is very limited.If design power of motor density is excessive, magnetic saturation takes place easily, cause motor performance to descend; Increase power if increase rotor axial length, cause spindle span to increase again, axis system critical whirling speed reduces, and is unfavorable for realizing high speed.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of compact conformation, space utilization is abundant, radial dimension is little, be particularly suitable for the high-speed permanent magnetic synchronous motor that high rotating speed needs.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of high-speed permanent magnetic synchronous motor, comprise electric machine casing, motor stator, spindle rotor assembly and a pair of bearing assembly that is divided into the housing rear and front end, described motor stator is fixed in the electric machine casing, described spindle rotor assembly is set in the motor stator, spindle rotor assembly two ends are supported on the electric machine casing by bearing assembly, described spindle rotor assembly comprises the rotor half front axle, rotor permanent magnet, semiaxis behind rotor sleeve and the rotor, described rotor permanent magnet is set in the rotor sleeve, described rotor sleeve one end and rotor half front axle are affixed, and semiaxis is affixed behind the other end and the rotor.
Described rotor permanent magnet is columned permanent magnet.
Described rotor permanent magnet outer circumference surface closely contacts with the rotor sleeve inner peripheral surface.
Be equipped with positioning spigot on the semiaxis behind described rotor half front axle and the rotor, locate by positioning spigot at described rotor sleeve two ends.
Semiaxis is equipped with the extension that extends in the rotor sleeve and offset with the rotor permanent magnet end behind described rotor half front axle and the rotor.
The outer circumference surface of the outer circumference surface of semiaxis and described rotor sleeve is located on the same face of cylinder behind the outer circumference surface of described rotor half front axle, the rotor.
Compared with prior art, advantage of the present utility model is:
High-speed permanent magnetic synchronous motor of the present utility model, the main shaft of rotor permanent magnet and motor becomes one, and be encapsulated in main shaft inside, taken full advantage of the motor internal space, make that the structure of rotor is compacter, can reduce the radial dimension of motor greatly, the critical whirling speed of axle system significantly improves with respect to traditional structure, satisfy the needs of pot motor, and rotor diameter reduces, the cylindrical area reduces, and is conducive to reduce rotor eddy current loss and magnetic hysteresis loss, improves electric efficiency, can utilize rotor space to carry out the motor electromagnetic design more fully, effectively avoid a traditional structural design rotor magnetic saturation difficult problem, reduced the power loss that causes because of magnetic saturation, be conducive to improve electric efficiency; High-speed permanent magnetic synchronous motor of the present utility model is compared with existing permagnetic synchronous motor, under identical power and rotating speed torque conditions, motor volume of the present utility model dwindles about 20%, under identical centrifugal stress condition allowable, can realize higher rotating speed, under identical volume conditions, motor of the present utility model can realize that power improves about 20%; High-speed permanent magnetic synchronous motor of the present utility model is owing to possess above characteristic, therefore be particularly suitable for the rotating speed requirement high, and the occasion that the space is restricted; The rotor volume reduces to be conducive to save the use amount of permanent magnet material, and cylindrical permanent magnet is easier to make, and said structure can significantly reduce the manufacturing cost of rotor.
Description of drawings
Fig. 1 is the structural representation of the utility model high-speed permanent magnetic synchronous motor embodiment.
Fig. 2 is the schematic flow sheet of the utility model high-speed permanent magnetic synchronous motor assembly method embodiment.
Each label is represented among the figure:
1, electric machine casing; 2, motor stator; 3, spindle rotor assembly; 4, bearing assembly; 5, positioning spigot; 31, rotor half front axle; 32, rotor permanent magnet; 33, rotor sleeve; 34, semiaxis behind the rotor.
Embodiment
Fig. 1 shows a kind of high-speed permanent magnetic synchronous motor embodiment of the present utility model, this high-speed permanent magnetic synchronous motor comprises electric machine casing 1, motor stator 2, spindle rotor assembly 3 and a pair of bearing assembly 4 that is divided into electric machine casing 1 rear and front end, motor stator 2 is fixed in the electric machine casing 1, spindle rotor assembly 3 is set in the motor stator 2, spindle rotor assembly 3 two ends are supported on the electric machine casing 1 by bearing assembly 4, spindle rotor assembly 3 comprises rotor half front axle 31, rotor permanent magnet 32, semiaxis 34 behind rotor sleeve 33 and the rotor, rotor permanent magnet 32 is set in the rotor sleeve 33, rotor sleeve 33 1 ends and rotor half front axle 31 are affixed, semiaxis 34 is affixed behind the other end and the rotor, rotor permanent magnet 32 becomes one with the main shaft of motor, and be encapsulated in main shaft inside, taken full advantage of the motor internal space, make that the structure of rotor is compacter, can reduce the radial dimension of motor greatly, can significantly improve the critical whirling speed of axle system, thereby satisfy the needs of pot motor, and rotor diameter reduces, the cylindrical area reduces, be conducive to reduce rotor eddy current loss and magnetic hysteresis loss, improve electric efficiency, simultaneously, can utilize rotor space to carry out the motor electromagnetic design more fully, effectively avoided a traditional structural design rotor magnetic saturation difficult problem, reduce the power loss that causes because of magnetic saturation, be conducive to improve electric efficiency; The rotor volume reduces to also help the use amount of saving permanent magnet material, can significantly reduce the manufacturing cost of rotor.High-speed permanent magnetic synchronous motor of the present utility model is compared with existing permagnetic synchronous motor, under identical power and rotating speed torque conditions, motor volume of the present utility model dwindles about 20%, under identical centrifugal stress condition allowable, can realize higher rotating speed, under identical volume conditions, motor of the present utility model can realize that power improves about 20%; High-speed permanent magnetic synchronous motor of the present utility model is owing to possess above characteristic, therefore be particularly suitable for the rotating speed requirement high, and the occasion that the space is restricted.
In the present embodiment, rotor permanent magnet 32 is columned permanent magnet, columned permanent magnet is easier to make, rotor permanent magnet 32 outer circumference surfaces closely contact with rotor sleeve 33 inner peripheral surfaces, be equipped with positioning spigot 5 behind rotor half front axle 31 and the rotor on the semiaxis 34, rotor sleeve 33 two ends are by positioning spigot 5 location, and semiaxis 34 welding behind positioning spigot 5 places and rotor half front axle 31 and rotor, semiaxis 34 is equipped with and extends in the rotor sleeve 33 behind rotor half front axle 31 and the rotor, and the extension that offsets with rotor permanent magnet 32 ends, to guarantee the integral rigidity of main shaft.
Fig. 2 shows the flow process of the assembly method embodiment of the utility model high-speed permanent magnetic synchronous motor, and this method may further comprise the steps:
1) motor stator 2 is packed in the electric machine casing 1;
2) assembling spindle rotor assembly 3;
3) spindle rotor assembly 3 is packed in the motor stator 2, and by bearing assembly 4 spindle rotor assembly 3 is supported on the electric machine casing 1;
Carry out step 2) time, earlier rotor permanent magnet 32 is set in the rotor sleeve 33, again semiaxis 34 behind rotor half front axle 31 and the rotor is individually fixed in rotor sleeve 33 two ends, then rotor permanent magnet 32 is magnetized.
Carry out step 2) time, semiaxis 34 is all fixing with rotor sleeve 33 welding behind rotor half front axle 31 and the rotor.
The assembly method of this high-speed permanent magnetic synchronous motor is damaged in the time of can avoiding adopting the permanent magnet assembling that traditional sleeve type structure Desing of Interference Joint causes, the high temperature demagnetization, and rotor is with respect to the circumferential slip of main shaft in the time of also can avoiding rotating at a high speed; Again rotor permanent magnet 32 is magnetized after assembling, can avoid permanent magnet in traditional assembly process to magnetize earlier refilling wearing because the assembling difficult problem that the permanent magnet strong suction causes.
Though the utility model discloses as above with preferred embodiment, yet is not in order to limit the utility model.Any those of ordinary skill in the art, under the situation that does not break away from the technical solutions of the utility model scope, all can utilize the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model, all should drop in the scope of technical solutions of the utility model protection any simple modification, equivalent variations and modification that above embodiment does according to the utility model technical spirit.
Claims (6)
1. high-speed permanent magnetic synchronous motor, comprise electric machine casing (1), motor stator (2), spindle rotor assembly (3) and a pair of bearing assembly (4) that is divided into electric machine casing (1) rear and front end, described motor stator (2) is fixed in the electric machine casing (1), described spindle rotor assembly (3) is set in the motor stator (2), spindle rotor assembly (3) two ends are supported on the electric machine casing (1) by bearing assembly (4), it is characterized in that: described spindle rotor assembly (3) comprises rotor half front axle (31), rotor permanent magnet (32), semiaxis (34) behind rotor sleeve (33) and the rotor, described rotor permanent magnet (32) is set in the rotor sleeve (33), described rotor sleeve (33) one ends and rotor half front axle (31) are affixed, and semiaxis behind the other end and the rotor (34) is affixed.
2. high-speed permanent magnetic synchronous motor according to claim 1, it is characterized in that: described rotor permanent magnet (32) is columned permanent magnet.
3. high-speed permanent magnetic synchronous motor according to claim 2, it is characterized in that: described rotor permanent magnet (32) outer circumference surface closely contacts with rotor sleeve (33) inner peripheral surface.
4. according to each described high-speed permanent magnetic synchronous motor in the claim 1 to 3, it is characterized in that: be equipped with positioning spigot (5) behind described rotor half front axle (31) and the rotor on the semiaxis (34), described rotor sleeve (33) two ends are by positioning spigot (5) location.
5. high-speed permanent magnetic synchronous motor according to claim 4 is characterized in that: semiaxis (34) is equipped with the extension that extends in the rotor sleeve (33) and offset with rotor permanent magnet (32) end behind described rotor half front axle (31) and the rotor.
6. high-speed permanent magnetic synchronous motor according to claim 5, it is characterized in that: the outer circumference surface of the outer circumference surface of semiaxis (34) and described rotor sleeve (33) is located on the same face of cylinder behind the outer circumference surface of described rotor half front axle (31), the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320132616 CN203135671U (en) | 2013-03-22 | 2013-03-22 | High-speed permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320132616 CN203135671U (en) | 2013-03-22 | 2013-03-22 | High-speed permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203135671U true CN203135671U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320132616 Expired - Fee Related CN203135671U (en) | 2013-03-22 | 2013-03-22 | High-speed permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203135671U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117633A (en) * | 2013-03-22 | 2013-05-22 | 湖南大学 | High-speed permanent magnet synchronous motor and assembly method thereof |
| CN110729824A (en) * | 2019-12-03 | 2020-01-24 | 扬州大学 | Double-layer distributed stator structure for ultra-high-speed motor |
-
2013
- 2013-03-22 CN CN 201320132616 patent/CN203135671U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117633A (en) * | 2013-03-22 | 2013-05-22 | 湖南大学 | High-speed permanent magnet synchronous motor and assembly method thereof |
| CN110729824A (en) * | 2019-12-03 | 2020-01-24 | 扬州大学 | Double-layer distributed stator structure for ultra-high-speed motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |