CN203722443U - Miniaturized squirrel-cage asynchronous motor structure for vibration noise research - Google Patents
Miniaturized squirrel-cage asynchronous motor structure for vibration noise research Download PDFInfo
- Publication number
- CN203722443U CN203722443U CN201420092761.XU CN201420092761U CN203722443U CN 203722443 U CN203722443 U CN 203722443U CN 201420092761 U CN201420092761 U CN 201420092761U CN 203722443 U CN203722443 U CN 203722443U
- Authority
- CN
- China
- Prior art keywords
- rotor
- stator
- asynchronous motor
- vibration noise
- motor structure
- 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 - Fee Related
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a miniaturized squirrel-cage asynchronous motor structure for vibration noise research. The structure comprises a stator and a rotor. The stator comprises a stator iron core, and a stator winding connected in double-layer laminating winding mode. The inner wall of the stator iron core is provided with a stator groove for embedding the stator winding therein; the stator iron core is fixed on a support; the rotor comprises a rotor iron core, a rotation shaft and a rotor guide strip; the rotor iron core is pressed on the rotation shaft; the outer wall of the rotor iron core is provided with a rotor groove for inserting the rotor guide strip therein; and end rings are respectively fixed on the two ends, which extend out of the rotor groove, of the rotor guide strip. The structure provided by the utility model can expose vibration to the maximum, improves electromagnetic exciting force amplitude, and can be used for auxiliary experiment research on motor electromagnetic exciting force, noise and vibration.
Description
Technical field
The utility model belongs to cage AC asynchronous electric motor field, particularly a kind of small-sized squirrel cage asynchronous motor structure for Vibration Noise Study.
Background technology
Advancing by leaps and bounds of power electronic technology, ac variable frequency speed regulation has become the main flow of electric drive, replaces more and more traditional DC speed regulation transmission.As the actuating motor of ac variable frequency speed regulation, AC induction motor is simple in structure, reliable, also has efficient driveability and good control performance.Because asynchronous motor supplied with variable frequency and common power frequency power supply asynchronous machine structure exists certain difference, while adopting common asynchronous moter to carry out frequency control, due to frequency-converter device power supply, wherein harmonic component can make a significant impact the runnability of asynchronous machine, and as electric current increases, loss increases, efficiency, power factor reduce, the phenomenons such as temperature rise increases, and also there will be torque pulsation, vibration and noise to increase, and winding insulation is easy aging.
Asynchronous motor supplied with variable frequency is widely used in the fields such as industrial and agricultural production and national defence, and along with the attention to noise pollution in recent years, the demand of low noise motor is more and more.Electromagnetic noise is to be produced by radial electromagnetic force excitation stator vibration, is also referred to as electro-magnetic exciting force, is one of Main Noise Sources of asynchronous machine.Radial electromagnetic force contains many harmonic waves, be called radial electromagnetic force ripple, when the order of electromagnetic force wave and electromechanics mode is consistent and frequency is close, thereby can cause stator resonances to cause larger electromagnetic noise, when serious, may damage motor, so should avoid as far as possible producing low order electromagnetic force harmonic wave.This just needs by the mechanism of research motor body electro-magnetic exciting force, thereby design and improve electric machine structure, reduces vibration noise as far as possible.But Computer Aided Design, mechanism research are only far from being enough by simulation analysis.Build test platform, utilize the special asynchronous motor of test platform, measure accurately motor body electro-magnetic exciting force, Vibration Condition, noise level, and be analyzed with simulation calculation value, can play to the Design and manufacture of low noise motor the effect of auxiliary and reference.
Utility model content
The purpose of this utility model is to provide a kind of small-sized squirrel cage asynchronous motor structure for Vibration Noise Study, be used for measuring asynchronous machine body internal vibration noise and electro-magnetic exciting force, and in conjunction with emulation, research and analyse the Related Mechanism of middle-size and small-size asynchronous machine electro-magnetic exciting force.Engineer can go out to guarantee that technique is up to standard, can guarantee low noise asynchronous machine again according to the consequence devised of experimental analysis accumulation.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of small-sized squirrel cage asynchronous motor structure for Vibration Noise Study, comprise stator and rotor, stator comprises the stator winding that stator core is connected around form with double-layer overlapped, and stator core inwall is provided with for embedding the stator slot of stator winding, and stator core is fixed on support; Rotor comprises rotor core, rotating shaft and rotor bar, and rotor core is pressed in rotating shaft, and rotor core outer wall is provided with for inserting the rotor of rotor bar, and rotor bar stretches out the outer two ends of rotor and is fixed with respectively end ring.
Said stator winding is the hard winding of moulding, by the coiling of mica lenticular wire, is formed, and number of pole-pairs is 2.
Said stator groove is opening rectangular channel.
Above-mentioned rotor is opening dovetail groove.
Said stator groove groove number is 48 grooves, and rotor groove number is 40 grooves.
Said stator long 215mm-217mm unshakable in one's determination, Stator End Winding single side axis is to long 511mm-521mm, the long 1908mm-1912m of single Stator End Winding.
The long 215mm-217mm of above-mentioned rotor core.
During asynchronous machine work, the electromagnetic force wave of electro-magnetic exciting force can produce radial electromagnetic force, and the Reeb of different orders has the vibration shape of different motor stator radial vibrations.Radially the order of Reeb is lower, and diastrophic adjacent two length of supports of generation unshakable in one's determination are from longer, and radial deformation is also larger.Stator core deflection is approximately directly proportional to the biquadratic of Reeb order, is directly proportional to Reeb amplitude, and the low order radial load ripple that amplitude is larger is principal element.To four extremely above motors, the Reeb order that fundamental wave magnetic field produces is generally greater than 4, and deflection unshakable in one's determination is small, and bipolar machine just easily produces the Reeb of low order fundamental wave magnetic field, and deflection unshakable in one's determination is larger, and vibration can be more obvious.
The utility model object is for assistant experiment research motor electromagnetic exciting force, noise and vibration, therefore, and the exposure vibration that the utility model motor can be tried one's best large, raising electro-magnetic exciting force amplitude.
Compared to the prior art, the utlity model has following features:
1, can be used for assistant analysis motor body electro-magnetic exciting force.
Only by simulation method, analyze asynchronous machine body electro-magnetic exciting force, have the problem that accuracy is not high.And the utility model can be used for experiment, Measurement accuracy asynchronous machine body electro-magnetic exciting force, thus can play auxiliary and reference role to the Design and manufacture of low noise asynchronous machine.
2, can give prominence to motor oscillating effect.
The Stator End Winding of asynchronous machine is in complicated brow leakage field, and the similar cantilever beam of Stator End Winding structure is difficult to be fixed in stator slot as other structures are firm, so Stator End Winding is especially vibrated maximum in stator winding nose place.Under the prerequisite that guarantees the normal work of motor, lengthen stator winding, especially Stator End Winding, can produce more obviously vibration and larger electro-magnetic exciting force, highlights motor body Vibration Condition; And longer stator winding has larger Space configuration transducer, be convenient to experiment measuring.
The utility model, based on ripe asynchronous machine structure, has reduced stator core and rotor core length, has increased Stator End Winding length, to give prominence to motor oscillating.Under the condition of frequency converter and power frequency power supply, the utility model can fine reaction cage AC asynchronous electric motor end basket vibration and electro-magnetic exciting force.
3, stator winding line adopts the hard winding of moulding, rather than adopts fine copper wire coiling, is mainly to consider that end winding vibration can be very large, and hard winding is more suitable for this kind of operating mode.This motor is low-voltage and high-current motor, and stator current and rotor current are larger, is convenient to highlight the impact of the large electric current of rotor on end electro-magnetic exciting force.
Accompanying drawing explanation
Fig. 1 is the utility model motor schematic cross-section;
Fig. 2 is the physical dimension schematic diagram of the utility model motor stator slot and rotor;
Fig. 3 is the utility model stator structure schematic cross-section;
Fig. 4 is the utility model rotor structure schematic cross-section;
Fig. 5 is the structural representation of the utility model stator winding and stator core;
Fig. 6 is the structural representation of the utility model rotor and rotating shaft.
In figure, 1-stator slot, 2-air gap, 3-stator winding, 4-rotor, 5-stator core, 6-Stator End Winding, 7-rotor core, 8-end ring, 9-rotor bar, 10-rotating shaft.
embodiment
Below in conjunction with accompanying drawing, further illustrate embodiment of the present utility model.
The utility model mainly comprises stator and rotor, see Fig. 1 and Fig. 5, stator mainly comprises the stator winding (3) that stator core (5) is connected around form with double-layer overlapped, stator core (5) inwall is provided with stator slot (1) and is used for embedding stator winding (3), and stator core (5) is fixed on support.See Fig. 1 and Fig. 6, rotor mainly comprises rotor core (7), rotating shaft (10) and rotor bar (9), it is upper that rotor core (7) is pressed on rotating shaft (10), and rotating shaft (10) is rotated rotor driven (7) unshakable in one's determination and rotated, and plays the effect of support rotor iron core and output machine torque; Rotor core (7) outer wall is provided with rotor (4), is used for inserting rotor bar (9), and rotor bar (9) stretches out the outer two ends of rotor (4) and is fixed with respectively end ring (8), and rotor cage modle winding welds with copper bar.
In this concrete enforcement, the stator winding (3) that double-layer overlapped connects around form is the hard winding of moulding, by the coiling of mica lenticular wire, is formed, and number of pole-pairs is 2.Stator slot (1) is opening rectangular channel, and rotor (4) is opening dovetail groove.
See Fig. 2 (a), stator slot (1) groove top width degree A1 is 13.2mm, and flute length A3 is 48.5mm, and width of rebate A2 is 13.2mm, and depth of rebate A4 is 1mm.See Fig. 2 (b), rotor (4) width of rebate B1 is 3.5mm, and groove top width degree B2 is 6.3mm, and flute length B3 is 38.4mm, and depth of rebate B4 is 4mm.
Fig. 3 and 4 is rotor and stator structure schematic diagram, Figure 3 shows that stator structure, and wherein, stator slot groove number is 48 grooves, and stator outer diameter D1 is 650mm, and diameter of stator bore D2 is 350mm.Figure 4 shows that rotor structure, wherein, rotor groove number is 40 grooves, and rotor inside diameter D 3 is 120mm, and rotor diameter D4 is 348mm.The difference of rotor diameter D4 and diameter of stator bore D2 is air gap distance, is 2mm.48/40 stator slot and rotor slot-number ratio are determined after calculating, and have both guaranteed that motor normally moved, and can also reduce the electric and magnetic oscillation that motor produces aspect the cooperation of stator and rotor teeth groove as far as possible.
Fig. 5 is stator structure schematic diagram, the long C1 of stator core is 215mm-217mm, and Stator End Winding (6) single side axis is 511mm-521mm to length C 2, and single Stator End Winding (6) length is 1908mm-1912mm, stator iron-core lamination cylindrical is selected high pressure Y355 punching, stator pitch 17.Stator End Winding is the stator winding stretching out outside stator core.Compare with same equal-specification motor, the utility model stator core length is shorter, and Stator End Winding is longer, thereby can strengthen the vibrating effect of Stator End Winding, and winding space is corresponding increase also, the measurement mechanism needing to lay experimental study.
Fig. 6 is rotor structure schematic diagram, and the long C3 of rotor core is 215mm-217mm, and rotor form is copper bar rotor, sliver and end ring, consists of, and rotor structure improves, and is conventional structure.Sliver specification is 4-2.12*5.6 TMYD, and shaft length C4 is 1400-1450mm, in stator core and rotor core, establishes ventilation hole.
Though the utility model is for asynchronous machine Computer Aided Design and noise, vibration mechanism research, its primary structure and traditional same equal-specification asynchronous machine structure are similar, comprise casing, Wiinding cartridge, end cap, bearing and ventilation heat abstractor etc.But compare with existing same equal-specification asynchronous machine, the utility model is the asynchronous machine of low-voltage and high-current, and stator core and rotor core length shorten, Stator End Winding increases.Rotor groove coordinates 48/40, and number of stator slots 48, rotor number 40.Support adopts simple steel plate welding drum shell, saves material, easy installation and removal, lightweight, also can guarantee the convenience of end measurement of electromagnetic simultaneously.The utility model is when rated speed 3000rpm, and rated power is 220KW, can adapt to inverter supply and power frequency power supply.
To provide a kind of method of using the utility model to measure rotor current below:
During use, transducer is placed on rotor bar, and slip ring and brush be installed in rotating shaft, by slip ring and brush, the measuring-signal of transducer is led to outside motor, the measuring-signal of drawing is processed to obtain rotor current, the situation of rotor current while obtaining motor body inverter supply.
Claims (9)
1. for a small-sized squirrel cage asynchronous motor structure for Vibration Noise Study, it is characterized in that:
Comprise stator and rotor, stator comprises the stator winding that stator core is connected around form with double-layer overlapped, and stator core inwall is provided with for embedding the stator slot of stator winding, and stator core is fixed on support; Rotor comprises rotor core, rotating shaft and rotor bar, and rotor core is pressed in rotating shaft, and rotor core outer wall is provided with for inserting the rotor of rotor bar, and rotor bar stretches out the outer two ends of rotor and is fixed with respectively end ring.
2. the small-sized squirrel cage asynchronous motor structure for Vibration Noise Study as claimed in claim 1, is characterized in that:
Described stator winding is the hard winding of moulding, by the coiling of mica lenticular wire, is formed, and number of pole-pairs is 2.
3. the small-sized squirrel cage asynchronous motor structure for Vibration Noise Study as claimed in claim 1, is characterized in that:
Described stator slot is opening rectangular channel.
4. the small-sized squirrel cage asynchronous motor structure for Vibration Noise Study as claimed in claim 1, is characterized in that:
Described rotor is opening dovetail groove.
5. the small-sized squirrel cage asynchronous motor structure for Vibration Noise Study as claimed in claim 1, is characterized in that:
Described stator slot groove number is 48 grooves, and described rotor groove number is 40 grooves.
6. the small-sized squirrel cage asynchronous motor structure for Vibration Noise Study as claimed in claim 1, is characterized in that:
The long 215mm-217mm of described stator core, the long 1908mm-1912mm of single Stator End Winding, Stator End Winding single side axis is to long 511-521mm.
7. the small-sized squirrel cage asynchronous motor structure for Vibration Noise Study as claimed in claim 1, is characterized in that:
The long 215mm-217mm of described rotor core.
8. the small-sized squirrel cage asynchronous motor structure for Vibration Noise Study as claimed in claim 3, is characterized in that:
Described stator slot groove top width degree 13.2mm, flute length 48.5mm, width of rebate 13.2mm, depth of rebate 1mm.
9. the small-sized squirrel cage asynchronous motor structure for Vibration Noise Study as claimed in claim 4, is characterized in that:
Described rotor width of rebate 3.5mm, groove top width degree 6.3mm, flute length 38.4mm, depth of rebate 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092761.XU CN203722443U (en) | 2014-03-03 | 2014-03-03 | Miniaturized squirrel-cage asynchronous motor structure for vibration noise research |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092761.XU CN203722443U (en) | 2014-03-03 | 2014-03-03 | Miniaturized squirrel-cage asynchronous motor structure for vibration noise research |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722443U true CN203722443U (en) | 2014-07-16 |
Family
ID=51161566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420092761.XU Expired - Fee Related CN203722443U (en) | 2014-03-03 | 2014-03-03 | Miniaturized squirrel-cage asynchronous motor structure for vibration noise research |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722443U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281448A (en) * | 2015-10-09 | 2016-01-27 | 清华大学 | Asynchronous motor with axial adjacent segment same-direction and reverse-direction power-on windings |
| CN107689719A (en) * | 2017-10-27 | 2018-02-13 | 合肥巨动力系统有限公司 | A kind of lenticular wire motor stator automatic wire inserting structure |
| CN111006830A (en) * | 2019-11-11 | 2020-04-14 | 东北大学 | Mouse cage type vibrating plate coupled particle bed experimental device and experimental method |
| CN113241919A (en) * | 2021-05-27 | 2021-08-10 | 江苏大学 | Bearing-free composite rotor cage type asynchronous motor |
-
2014
- 2014-03-03 CN CN201420092761.XU patent/CN203722443U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281448A (en) * | 2015-10-09 | 2016-01-27 | 清华大学 | Asynchronous motor with axial adjacent segment same-direction and reverse-direction power-on windings |
| CN107689719A (en) * | 2017-10-27 | 2018-02-13 | 合肥巨动力系统有限公司 | A kind of lenticular wire motor stator automatic wire inserting structure |
| CN107689719B (en) * | 2017-10-27 | 2023-11-21 | 合肥巨一动力系统有限公司 | Automatic wire-plugging structure of flat wire motor stator |
| CN111006830A (en) * | 2019-11-11 | 2020-04-14 | 东北大学 | Mouse cage type vibrating plate coupled particle bed experimental device and experimental method |
| CN111006830B (en) * | 2019-11-11 | 2021-08-17 | 东北大学 | Mouse cage type vibrating plate coupled particle bed experimental device and experimental method |
| CN113241919A (en) * | 2021-05-27 | 2021-08-10 | 江苏大学 | Bearing-free composite rotor cage type asynchronous motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Tong et al. | Loss and thermal analysis of a high-speed surface-mounted PMSM with amorphous metal stator core and titanium alloy rotor sleeve | |
| CN203722443U (en) | Miniaturized squirrel-cage asynchronous motor structure for vibration noise research | |
| Hong et al. | Development of a high speed induction motor for spindle systems | |
| CN203482057U (en) | Birotor motor, and fan and compressor using same birotor motor | |
| CN101039057A (en) | A. C. brushless double-fed motor | |
| Uzhegov et al. | Design of 6-slot 2-pole high-speed permanent magnet synchronous machines with tooth-coil windings | |
| Sharma et al. | Design and development of capacitor run split-phase fan motor for higher efficacy | |
| Zhou et al. | Design and analysis of low-speed high torque direct-driven permanent magnet synchronous machines (PMSM) with fractional-slot concentrated winding used in coal mine belt conveyor system | |
| Yang et al. | Design of double stator permanent magnet synchronous motor with low speed large torque | |
| Makhetha et al. | Effect of Rotor bar Shape and Stator Slot Opening on the Performance of Three Phase Squirrel Cage Induction Motors with Broken Rotor Bars | |
| CN204858923U (en) | A directly drive formula permanent magnetism AC servo motor for forging press | |
| Dranca et al. | Comparative Design Analysis of Two Modular Permanent Magnet Synchronous Generators | |
| CN105391261A (en) | High-speed non-salient-pole electrically excited synchronous motor rotor in air gap magnetic field sine distribution and structural parameter determination method of rotor | |
| CN202111543U (en) | Salient pole type rotor iron core of three-phase brushless alternating-current generator | |
| CN206412846U (en) | Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure | |
| Apaydın et al. | Investigation of the efficiency improvement on a 1.1 kW three-phase asynchronous motor | |
| Das et al. | Design and analysis of an axial flux doubly fed induction generator for wind turbine applications | |
| Li et al. | Influence of magnetic wedge on electromagnetic field distribution of permanent magent traction motor | |
| Du et al. | Characterization of radial electromagnetic force and vibration response in squirrel-cage induction motor under PWM supply | |
| CN105281448A (en) | Asynchronous motor with axial adjacent segment same-direction and reverse-direction power-on windings | |
| Hofman et al. | Influence of soft magnetic material in a permanent magnet synchronous machine with a commercial induction machine stator | |
| Heidrich et al. | Investigation of a high-speed drive for turbo-machines | |
| Zhang et al. | The research on an inter-phase coupling switched reluctance motor with short flux path | |
| Xiao et al. | Research on slit dimensions of axially slotted solid rotor induction motor | |
| CN106787275A (en) | Frequency conversion high-speed wet type fire-proof motor stator and rotor slot fit structure |
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: 20140716 Termination date: 20150303 |
|
| EXPY | Termination of patent right or utility model |