CN205336005U - Magnetism slot wedge and have motor of this magnetism slot wedge - Google Patents
Magnetism slot wedge and have motor of this magnetism slot wedge Download PDFInfo
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- CN205336005U CN205336005U CN201521139153.0U CN201521139153U CN205336005U CN 205336005 U CN205336005 U CN 205336005U CN 201521139153 U CN201521139153 U CN 201521139153U CN 205336005 U CN205336005 U CN 205336005U
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- slot wedge
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Abstract
The utility model discloses a magnetism slot wedge, including the slot wedge body, have on the slot wedge body and do benefit to the opening that reduces the magnetic leakage, the opening runs through in the thickness direction of slot wedge body the slot wedge body. The utility model also discloses the motor, including the stator, be equipped with the slot in the stator, at least partly slot interpolation is equipped with the magnetism slot wedge. The utility model discloses a set up the opening that reduces the magnetic leakage at the magnetism slot wedge, the degradable low -loss improves the electric efficiency and does not reduce load bearing capability.
Description
Technical field
The present invention relates to technical field of motors, be specifically related to a kind of magnetic slot-seal and there is the motor of this magnetic slot-seal。
Background technology
Motor is mainly made up of stator, winding, rotor, and one of current main stator grooved is as it is shown in figure 1, other grooved is similar to this, wherein slot opening is a selection comparing contradiction, considers from motor performance angle, it is necessary to notch is smaller, and consider from wire insertion technology, notch can not be too little。
Major part motor uses artificial offline mode at present, and this is unfavorable for large-scale production, and the efficiency that manually rolls off the production line is low, and finished product concordance is not high, and easily makes mistakes, so automatic winding technology obtains development along with the requirement of automated production。Current automatic winding mainly has two kinds, and one is flying needle coiling on existing stator tooth, and the second is that coiling rear enclosure is on the stator teeth on skeleton。Wherein the stator of flying needle coiling is without doing too big change, but this technique limitation is relatively big, and institute can not be too thick and inefficient around copper cash, it is easy to fault；Skeleton coiling highly versatile, efficiency is high, but needing stator is parallel teeth and anodontia boots, in order to set skeleton, and this stator structure leakage field is more, and useful flux is relatively low, and air gap flux density distortion is relatively big, and torque pulsation becomes big, and motor performance reduces。
Using magnetic slot-seal can make up the motor performance loss that a part of straight tooth structure brings, magnetic slot-seal conventional at present is as in figure 2 it is shown, seal notch, form the design of similar closed slot, can improving electric efficiency, but can serve problem by band, mainly load capacity reduces。Because magnetic slot-seal can cause that leakage field increases, air gap flux density reduces, and the utilization rate of magnet steel reduces。
Utility model content
For overcoming the deficiencies in the prior art, this utility model provides a kind of magnetic slot-seal and has the motor of this magnetic slot-seal, by arranging the opening reducing leakage field at magnetic slot-seal, it is possible to decrease loss, improving electric efficiency and do not reduce load capacity, concrete technical scheme is as follows:
A kind of magnetic slot-seal, including slot wedge body, on described slot wedge body, tool advantageously reduces the opening of leakage field, and described opening runs through described slot wedge body on the thickness direction of slot wedge body。
This utility model, by arranging opening, to reduce the intrinsic magnetic flux of slot wedge, and reduces leakage field。
Preferably, described opening extends on the length direction of slot wedge body。
Reduce the effect of leakage field for promoting described opening, this internal has preferably length at slot wedge should to make opening, then preferably opening in the length of slot wedge to extension。
Preferably, described opening is positioned on the center line that slot wedge body longitudinally extends。
The opening arranged can destroy the structure of slot wedge unavoidably, for the structural strength after guarantee slot wedge opening, it is preferable that be arranged on center line by opening, makes slot wedge body phase center line symmetrical。
In this utility model, opening should have optimum width, and the too little minimizing leakage field of opening is limited, and opening too conference reduces magnetic slot-seal effect, it is preferred that the width of described opening is 0.05-0.75 times of slot wedge body width。
It is further preferred that 0.2-0.5 times that the width of described opening is slot wedge body width, reducing leakage field with while obtaining magnetic utilization rate, and taking into account there is little cogging torque。
Meanwhile, the oversize rigidity that can reduce magnetic slot-seal of opening, length too small minimizing leakage field is limited；Preferably, the length of described opening is 0.8-0.9 times of slot wedge body length。
Preferably, described opening is arranged symmetrically with relative to the center line of slot wedge body；Center line herein includes the center line of width and/or the center line of length direction so that the slot wedge body after opening is structurally symmetrical。
Preferably, described opening is spaced apart multiple, and each opening is arranged along the length direction of described slot wedge body。
In some cases, long opening will certainly destroy the structural strength of slot wedge, but to obtain the effect reducing leakage field preferably, opening is needed again to ensure certain length, now can be realized by multiple spaced apart openings, multiple openings may be located on same straight line, it is also possible to is suitably staggered as required。
Present invention also offers a kind of motor, including stator, in described stator, be provided with slot, at least some of slot, be inserted with above-mentioned magnetic slot-seal。
It is further preferred that be equipped with the magnetic slot-seal with opening in each slot。
This utility model simple in construction, by arranging the opening reducing leakage field at magnetic slot-seal, it is possible to decrease loss, improves electric efficiency and does not reduce load capacity。
Accompanying drawing explanation
Fig. 1 is conventional stator schematic diagram；
Fig. 2 is magnetic slot-seal schematic diagram of remaining silent；
Fig. 3 is opening magnetic slot-seal schematic diagram；
Fig. 4 is opening magnetic slot-seal scheme of installation；
Fig. 5 is opening slot wedge detail drawing of installation；
Fig. 6 is magnetic slot-seal leakage field schematic diagram of remaining silent；
Fig. 7 is opening magnetic slot-seal leakage field schematic diagram；
Fig. 8 is the cogging torque contrast of nonmagnetic slot wedge, opening magnetic slot-seal, magnetic slot-seal of remaining silent；
Fig. 9 is the magnetic slot-seal back-emf comparison diagram with remain silent magnetic slot-seal and nonmagnetic slot wedge of different openings size；
Figure 10 is the magnetic slot-seal cogging torque comparison diagram with remain silent magnetic slot-seal and nonmagnetic slot wedge of different openings size。
In figure: 1, stator；2, rotor, 3, magnetic slot-seal；4, opening。
Detailed description of the invention
As shown in Fig. 3, Fig. 4 and Fig. 5, a kind of motor, including stator 1, rotor 2 and magnetic slot-seal 3, there is step magnetic slot-seal 3 both sides, can be inserted in the slot of stator tooth plank。
According to different motors, selecting to adapt to the magnetic slot-seal 3 of thickness, the too thick meeting of slot wedge thickness causes that leakage field increases。In the present embodiment, magnetic slot-seal thickness is 4mm, and the length of magnetic slot-seal is provided with opening 4 to the midline, opening 4 at thickness to running through slot wedge body 3, and closed at both ends。
Corresponding different motors, the width of opening 4 has individual optimum, and the too little minimizing leakage field of opening is limited, and opening too conference reduces magnetic slot-seal effect, and different motor openings are different, and opening can reduce leakage field, reduces loss。
In the present embodiment, the width of magnetic slot-seal 3 is 22.3mm, and length is 95mm；The width of opening is 7mm, and length is 80mm。
The effect of opening 4 can be illustrated by Fig. 6 and Fig. 7, and Fig. 6 is magnetic slot-seal leakage field schematic diagram of remaining silent, and Fig. 7 is the opening magnetic slot-seal leakage field schematic diagram in the present embodiment, it can be seen that Fig. 6 leakage field in the middle of magnetic slot-seal of remaining silent is more。
In the present embodiment, magnetic slot-seal adopts conventional laminated magnetic wedge, and such as 3341 magnetic slot-seals, the glass fibre after impregnating with resin, for matrix, superposes compacting and forms, have the advantages such as magnetic conductivity good, resistivity is high, good processability with magnetic powder。
Nonmagnetic slot wedge, opening magnetic slot-seal, magnetic slot-seal of remaining silent cogging torque contrast as shown in Figure 8, the cogging torque of the slot wedge that is magnetic significantly reduces, and the cogging torque of magnetic slot-seal of wherein remaining silent is minimum, but is more or less the same with the cogging torque of opening magnetic slot-seal。Wherein, the rated current of nonmagnetic slot wedge is 27.39A, and the rated current of magnetic slot-seal of remaining silent is 26.48A, and the rated current of opening magnetic slot-seal is 26.28A, it is seen that the rated current of opening magnetic slot-seal is minimum, and loss is minimum。
In the present embodiment, Fig. 9 is different openings size magnetic slot-seal, magnetic slot-seal of remaining silent, the contrast of nonmagnetic slot wedge back-emf, the size of back-emf reflects the size of magnetic property utilization rate, can be seen that, nonmagnetic slot wedge structure back-emf is minimum, along with the change of magnetic slot-seal opening is big, and back-emf first increases and then decreases, illustrate that openings of sizes has individual optimal value, choose suitable opening and can obtain maximum magnetic utilization rate。Figure 10 is the change contrast of different openings size magnetic slot-seal, magnetic slot-seal of remaining silent, nonmagnetic slot wedge cogging torque, nonmagnetic slot wedge structure cogging torque is maximum, along with slot wedge opening becomes big, cogging torque is W type variation tendency, therefore, choose suitable slot wedge openings of sizes, it is possible to obtain less cogging torque。Relative analysis according to Fig. 9 and Figure 10, when slot wedge A/F is 0.05-0.75 times of slot wedge width, can obtain better magnetic utilization rate；And when slot wedge A/F is 0.25-0.5 or 0.75-0.85 times of slot wedge body width, less cogging torque can be obtained, this 2 point comprehensive, when slot wedge A/F takes 0.25-0.5 times of slot wedge body width, can obtain good magnetic utilization rate and less cogging torque。
Such as: when magnetic slot-seal A/F is 7mm, cogging torque is 4.6N.m, and back-emf is 165.1V；When A/F is 3mm, cogging torque is 8.5N.m, and back-emf is 164.4V；When A/F is 12mm, cogging torque is 9.3N.m, and back-emf is 165V。
The foregoing is only preferably implementation example of the present utility model, be not limited to this utility model, all within this utility model spirit and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model。
Claims (9)
1. a magnetic slot-seal, including slot wedge body, it is characterised in that on described slot wedge body, tool advantageously reduces the opening of leakage field, and described opening runs through described slot wedge body on the thickness direction of slot wedge body。
2. magnetic slot-seal as claimed in claim 1, it is characterised in that described opening extends on the length direction of slot wedge body。
3. magnetic slot-seal as claimed in claim 2, it is characterised in that described opening is positioned on the center line that slot wedge body longitudinally extends。
4. the magnetic slot-seal as described in claim 1,2 or 3, it is characterised in that the width of described opening is 0.05-0.75 times of slot wedge body width。
5. magnetic slot-seal as claimed in claim 4, it is characterised in that the width of described opening is 0.2-0.5 times of slot wedge body width。
6. the magnetic slot-seal as described in claim 1,2 or 3, it is characterised in that the length of described opening is 0.8-0.9 times of slot wedge body length。
7. magnetic slot-seal as claimed in claim 1, it is characterised in that described opening is arranged symmetrically with relative to width center line and/or the length center line of slot wedge body。
8. the magnetic slot-seal as described in claim 1,2 or 3, it is characterised in that described opening is spaced apart multiple, each opening is arranged along the length direction of described slot wedge body。
9. a motor, including stator, it is characterised in that be provided with slot in described stator, is inserted with the magnetic slot-seal as described in any one of claim 1～8 at least some of slot。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521139153.0U CN205336005U (en) | 2015-12-31 | 2015-12-31 | Magnetism slot wedge and have motor of this magnetism slot wedge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521139153.0U CN205336005U (en) | 2015-12-31 | 2015-12-31 | Magnetism slot wedge and have motor of this magnetism slot wedge |
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| CN205336005U true CN205336005U (en) | 2016-06-22 |
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| CN201521139153.0U Active CN205336005U (en) | 2015-12-31 | 2015-12-31 | Magnetism slot wedge and have motor of this magnetism slot wedge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357019A (en) * | 2016-10-28 | 2017-01-25 | 上海大学 | Stator for reducing cogging torque of permanent magnet synchronous motor |
| CN107231052A (en) * | 2017-06-24 | 2017-10-03 | 郭自刚 | A kind of motor stator of use mild steel slot wedge |
| CN107659020A (en) * | 2017-10-31 | 2018-02-02 | 哈尔滨电机厂有限责任公司 | Steam turbine generator magnetic slot-seal |
| CN107659019A (en) * | 2017-08-18 | 2018-02-02 | 河北电机股份有限公司 | A kind of high-voltage motor for being easy to regulation motor Magnetic circuit characters |
-
2015
- 2015-12-31 CN CN201521139153.0U patent/CN205336005U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106357019A (en) * | 2016-10-28 | 2017-01-25 | 上海大学 | Stator for reducing cogging torque of permanent magnet synchronous motor |
| CN107231052A (en) * | 2017-06-24 | 2017-10-03 | 郭自刚 | A kind of motor stator of use mild steel slot wedge |
| CN107659019A (en) * | 2017-08-18 | 2018-02-02 | 河北电机股份有限公司 | A kind of high-voltage motor for being easy to regulation motor Magnetic circuit characters |
| CN107659020A (en) * | 2017-10-31 | 2018-02-02 | 哈尔滨电机厂有限责任公司 | Steam turbine generator magnetic slot-seal |
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