CN107979203A - Slot wedge, Stator and electrical machine and the method for manufacturing the slot wedge - Google Patents
Slot wedge, Stator and electrical machine and the method for manufacturing the slot wedge Download PDFInfo
- Publication number
- CN107979203A CN107979203A CN201711440919.2A CN201711440919A CN107979203A CN 107979203 A CN107979203 A CN 107979203A CN 201711440919 A CN201711440919 A CN 201711440919A CN 107979203 A CN107979203 A CN 107979203A
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- Prior art keywords
- slot wedge
- magnetic conduction
- layered product
- slot
- conduction sheet
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
- H02K3/487—Slot-closing devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0018—Applying slot closure means in the core; Manufacture of slot closure means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention provides a kind of slot wedge, Stator and electrical machine and the method for manufacturing the slot wedge.Slot wedge for the stator core of motor includes the layered product for being laminated and being formed by multiple magnetic conduction sheets, and the layered product is in strip, wherein, multiple ventilation slots are provided with the slot wedge, layered product described in the ventilation slot along the radial penetration of the stator core and formed.The slot wedge of stator core using the present invention for motor can efficiently reduce harmonic wave and improve air-gap flux distribution, to improve the work efficiency of motor and rated power, while can also reduce that the motor feels hot, extend the service life of motor.
Description
Technical field
The present invention relates to wind-driven generator technical group field, more particularly, to a kind of slot wedge, Stator and electrical machine and system
The method for making the slot wedge.
Background technology
The usually used slot wedge of the motor of wind power generating set is insulating slot wedge at present, this exists since insulating slot wedge can only
Fixation is played to winding, performance is single, and insulating slot wedge has big empty load of motor electric current, electric machine iron core loss height, determines
The shortcomings of sub- temperature rise.In addition, existing slot wedge has rectangular configuration or an inverted triangular structure mostly, contact friction force compared with
Small, the slot wedge is easily separated from.
It can lower electric machine iron core loss therefore, it is necessary to a kind of, reduce temperature rise and can prevent the slot wedge departed from.
The content of the invention
In order to solve the above technical problem, the present invention provides a kind of use that can be reduced electric machine iron core loss, reduce temperature rise
In the slot wedge of the stator core of motor, Stator and electrical machine and the method for manufacturing the slot wedge.
According to an aspect of the present invention, there is provided a kind of slot wedge of stator core for motor, the slot wedge are included by more
The layered product that a magnetic conduction sheet is laminated and is formed, and the layered product is in strip, wherein, it is provided with the slot wedge multiple logical
Wind groove, layered product described in the ventilation slot along the radial penetration of the stator core and formed.Since the slot wedge is including more
A magnetic conduction sheet, therefore, magnetic flux is when by the notch of stator core, magnetic flux amplitude reduction, pulsation loss reduction, flux density in core tooth
More uniformly, and additional idle loss can be reduced.Further, since the slot wedge is provided with the ventilation slot, therefore can reduce
Motor temperature rise.Motor temperature rise declines, and the higher hamonic wave of air-gap field reduces so that no-load current reduces, while can also reduce electricity
Machine vibration and noise.
Exemplary embodiment according to the present invention, the position of the ventilation slot and quantity are logical with the stator core respectively
The position of wind ditch and quantity are corresponding, and in the notch that the slot wedge is installed to the stator core in the state of, it is described
Ventilation slot is connected with the corresponding air duct, preferably to radiate, so as to effectively further reduce motor temperature rise.
Exemplary embodiment according to the present invention, the magnetic conduction sheet may include silicon steel sheet.Silicon steel sheet slot wedge can reduce humorous
Ripple, pulsation loss and core loss, therefore, can reduce loss, reduce motor temperature rise.In addition, the magnetic conduction sheet is
The strong silicon steel sheet of magnetic conductivity so that teeth portion magnetic conductivity increases so that detent torque and torque capacity reduce.Show according to the present invention
Example property embodiment, the magnetic conduction sheet can be tack silicon steel sheet, so as to easily by the multiple magnetic conduction sheet stacking and each other
Bond and form layered product, the multiple magnetic conduction sheet is fastened without other fasteners.
Exemplary embodiment according to the present invention, passes through clinching mode in the layered product between two adjacent magnetic conduction sheets
With reference to；Or the corresponding position of the multiple magnetic conduction sheet is provided with through hole, bolt through each magnetic conduction sheet the through hole and
The fastening of the multiple magnetic conduction sheet is combined together, so as to more neatly design the magnetic conduction sheet, and expands and leads
The selection range of magnetic sheet.
Exemplary embodiment according to the present invention, the end in the axial direction of the stator core of the slot wedge can be formed
There is bevelled guiding surface, the end for guiding slot wedge is easily inserted into the notch of the stator core.
Exemplary embodiment according to the present invention, the cross section of the slot wedge can be trapezoidal so that the slot wedge with it is described
The shape of notch matches, and makes contact area increase to provide stronger resistance, so as to prevent slot wedge from departing from from the notch.
Exemplary embodiment according to the present invention, the extended line of the side of formation two trapezoidal waists of the slot wedge
Formed angle can be between 45 °~70 ° so that and the side of the slot wedge and the notch shape of the stator core match,
And the surface of the slot wedge may be provided with rust-preventing film, prevent the slot wedge from getting rusty, to extend its service life.
According to another aspect of the present invention, there is provided a kind of stator, the stator is including the stator core and as described above
Slot wedge, the slot wedge is plugged in the notch of the stator core.
According to another aspect of the present invention, there is provided a kind of motor, the motor include stator as described above.
According to another aspect of the present invention, there is provided a kind of method for manufacturing slot wedge as described above, the described method includes：Punching
Make the multiple magnetic conduction sheet；The multiple magnetic conduction sheet of punching is layered in lamination stack mold, to form the layered product；Utilize
Diebolt fastens the lamination stack mold to compress the layered product；The layered product after compression is sent into baking oven, to perform
Cure；After layered product cooling after cured, the demoulding is performed；And punching is performed to the layered product after the demoulding and carrys out shape
Into the ventilation slot, to obtain the slot wedge, wherein, the magnetic conduction sheet is tack magnetic conduction sheet.
Exemplary embodiment according to the present invention, the method may also include：The overlapping mold is fastened using diebolt
After tool is to compress the layered product, height, stacking factor and the end face plane degree of the layered product are detected；And/or
After obtaining the slot wedge, the height of the layered product is detected.
Exemplary embodiment according to the present invention, the multiple tack magnetic conduction sheet are tack silicon steel sheet.
Exemplary embodiment according to the present invention, the method may also include：In the slot wedge in the stator core
Axial direction on end formed bevelled guiding surface.
Exemplary embodiment according to the present invention, the method may also include：Rust-preventing film is formed on the surface of the slot wedge.
According to another aspect of the present invention, there is provided a kind of method for manufacturing slot wedge as described above, the described method includes：Punching
The multiple magnetic conduction sheet is made, and through hole is opened up in the multiple magnetic conduction sheet；The multiple magnetic conduction sheet of punching is laminated, is adopted
The fastening of the multiple magnetic conduction sheet is combined together to form the layered product through the through hole of each magnetic conduction sheet with bolt；With
And punching is performed to the layered product to form the ventilation slot, to obtain the slot wedge.
According to another aspect of the present invention, there is provided a kind of method for manufacturing slot wedge as described above, the described method includes：Punching
Make the multiple magnetic conduction sheet, and cramp and corresponding is set in the side of each magnetic conduction sheet and the opposite side opposite with the side
Cramp groove；The cramp and cramp groove for making two adjacent magnetic conduction sheets carry out clinching combination, and the multiple magnetic conduction sheet is laminated and is pressed
Tightly form the layered product；And punching is performed to the layered product to form the ventilation slot, to obtain the slot wedge.
The slot wedge of stator core using the present invention for motor can efficiently reduce harmonic wave and improve air-gap flux point
Cloth, to improve the work efficiency of motor and rated power, while can also reduce that the motor feels hot, extend the service life of motor.
Brief description of the drawings
The exemplary embodiment of the present invention is described in detail below in conjunction with the accompanying drawings, above and other feature of the invention
And advantage will become clearer, in attached drawing：
Fig. 1 is the schematic perspective view of the slot wedge of exemplary embodiment according to the present invention；
Fig. 2 is the left view schematic diagram of the slot wedge shown in Fig. 1 of exemplary embodiment according to the present invention；
Fig. 3 is the schematic front view of the slot wedge shown in Fig. 1 of exemplary embodiment according to the present invention；
Fig. 4 and Fig. 5 shows that the slot wedge of exemplary embodiment according to the present invention is installed to the groove of the stator core of motor
Schematic diagram in mouthful.
Drawing reference numeral explanation：
1：Slot wedge；2：Stator core；21：Core tooth；3：Notch；11：Layered product；12：Ventilation slot.
Embodiment
The embodiment of the present invention is more fully described now with reference to attached drawing, the invention is shown in the accompanying drawings exemplary
Embodiment.
The slot wedge 1 and its manufacture method of exemplary embodiment according to the present invention are described below with reference to Fig. 1 to Fig. 5.Fig. 1
It is the schematic perspective view of the slot wedge 1 of exemplary embodiment according to the present invention；Fig. 2 is exemplary embodiment according to the present invention
The left view schematic diagram of slot wedge 1 shown in Fig. 1；Fig. 3 is the slot wedge 1 shown in Fig. 1 of exemplary embodiment according to the present invention
Schematic front view；Fig. 4 and Fig. 5 shows that the slot wedge 1 of exemplary embodiment according to the present invention is installed to the stator iron of motor
Schematic diagram in the notch 3 of core 2.The slot wedge 1 of exemplary embodiment according to the present invention can be used for the phase of the stator core 2 of motor
At notch 3 between adjacent core tooth 21.
The slot wedge 1 of the stator core 2 for motor of exemplary embodiment according to the present invention may include by multiple magnetic conductions
The layered product 11 that piece is laminated and is formed.It is additionally provided with multiple ventilation slots 12 on slot wedge 1, ventilation slot 12 is along stator core 2
Radial penetration layered product 11 and formed.
Since magnetic conduction sheet is formed using permeability magnetic material, hence in so that slot wedge 1 is magnetic slot-seal.One according to the present invention is shown
, each magnetic conduction sheet in the multiple magnetic conduction sheet is the silicon steel sheet for having stronger magnetic conduction ability.The hysteresis curve of silicon steel sheet
It is smaller so that magnetic hystersis loss reduces, greatly reduces the degree of heat.Slot wedge 1 is formed by the way that multiple silicon steel sheets are laminated, can also be subtracted
Small eddy-current loss, and magnetic flux is when by the notch 3 of stator core 2, magnetic flux amplitude reduction, pulsation loss drop in core tooth 21
It is low, flux density is more uniform, and additional idle loss can be reduced.
Further, since slot wedge 1 is provided with the ventilation slot 12 along the radial penetration layered product 11 of stator core 2, and lead to
The position of wind groove 12 and quantity are corresponding with the position of the air duct of stator core 2 and quantity respectively, and are installed in slot wedge 1
In the state of in the notch 3 of stator core 2, ventilation slot 12 is connected with the corresponding air duct, so as to effectively reduce electricity
Machine temperature rise.Motor temperature rise declines, and the higher hamonic wave of air-gap field reduces so that no-load current reduces, while can also reduce motor
Vibration and noise.As an example, ventilation slot 12 can be symmetrically disposed in slot wedge 1 stator core 2 in the radial direction and that
In this two opposite side or a side being made only in described two sides.
As shown in Figure 1, slot wedge 1 is in strip on the whole, and as shown in Fig. 2, the groove intercepted along the radial direction of stator
The cross section of wedge 1 is trapezoidal, at the notch 3 for the stator core 2 that slot wedge 1 is installed to motor in the axial direction along stator
When, slot wedge 1 and the shape of notch 3 match, and make contact area increase to provide stronger resistance, so as to prevent slot wedge 1 from groove
Depart from mouth 3.
Preferably, corner's rounding transition of adjacent two side of slot wedge 1, slot wedge 1 is being installed to motor
When in the notch 3 of stator core 2 avoid that stator core 2 and winding coil are caused to damage.
Angle α formed by the extended line of the side for two waists for forming the above-mentioned trapezoid cross section of slot wedge 1 can be at 45 °~70 °
Between.Preferably, in the case that reference Fig. 2, in the angle [alpha] of the dovetail part of the swallow-tailed notch 3 of stator core 2 ' is 60 degree,
The angle α may be configured as 60 degree.However, the present invention is not limited thereto, in practical applications, can be according to the notch 3 of stator core 2
Shape carry out the size of angle α described in reasonable design so that slot wedge 1 can match with notch 3, and with as big as possible
Contact area.For example, can be according to the angle [alpha] of the dovetail part of the swallow-tailed notch 3 of stator core 2 ' (with reference to Fig. 5) to design
State the size of angle α.
For the ease of slot wedge 1 is installed in the notch 3 of stator core 2, in slot wedge 1 in the axial direction of stator core 2
End can be formed with bevelled guiding surface, the end for guiding slot wedge 1 is easily inserted into the notch 3 of stator core 2.
For example, can by the end in the axial direction of stator core 2 of the top surface in slot wedge 1 formed with about 15 ° of undercut ss,
To form bevelled guiding surface.Bevelled guiding surface can be made only in one end of slot wedge 1, it is clear that can also be formed in slot wedge 1
Both ends, the either end of slot wedge 1 can be inserted into notch 3 when mounted so that installation direction is unrestricted, in order to
Installed for greater flexibility.In addition, the size of the undercut ss is also not necessarily limited to above-mentioned about 15 °, in actual use, can
Undercut ss is designed according to the flexible shapes of notch 3, as long as it is easy to slot wedge 1 being installed in notch 3.
In addition, slot wedge 1 gets rusty in order to prevent, the service life of slot wedge 1 is improved, rust-preventing film can be set on the surface of slot wedge 1,
According to example, the rust-preventing film can be formed by rust prevention by applying liquid material paint.
As shown in figure 4, the slot wedge 1 of exemplary embodiment can be by keeping its bevelled guiding surface face according to the present invention
Adjacent two stator to its one end with bevelled guiding surface to be inserted into motor in the state of the axle center of stator core 2
In notch 3 between the core tooth 21 of iron core 2, then slot wedge 1 is pushed into notch 3 using suitable frock.
By that for 1.5MW motors the magnetic slot-seal of exemplary embodiment according to the present invention will used existing with using
Non magnetic slot wedge performance carry out actual measurement with finite element software Magnet analysis calculate contrast, to verify using magnetic slot-seal
Effect.From survey and result of calculation from the point of view of, though using exemplary embodiment according to the present invention magnetic slot-seal or use
Existing non magnetic slot wedge, the equal very little of influence of the two no-load back electromotive force to motor, this is adopted mainly due to 1.5MW motors
With dividing groove winding, and skewed-rotor 2.5mm, therefore counteract the teeth groove harmonic wave in counter electromotive force.In addition, magnetic slot-seal and
Non magnetic slot wedge has an effect on loss and the noise of motor, and the loss of slot wedge influence motor is mainly manifested in the surface damage of stator core
Consumption and rotor magnetic steel, the eddy-current loss of yoke.Influence of the slot wedge to stator iron loss is mainly high order space harmonics in stator core
Tooth surface produces magnetic hysteresis and eddy-current loss.For 1.5MW motors, calculated by finite element software Magnet, using existing non-
The eddy-current loss of the motor of magnetic slot-seal, magnet steel and yoke is respectively 2411.2W and 380W, and uses example according to the present invention
The eddy-current loss of the motor of the magnetic slot-seal of property embodiment, magnet steel and yoke is 1152.8W and 224W respectively.It is existing with using
The motor of non magnetic slot wedge is compared, and the motor of the magnetic slot-seal of exemplary embodiment according to the present invention causes magnet steel and yoke
Eddy-current loss reduces about more than 50% respectively.In addition, it can also effectively reduce hair using the magnetic slot-seal of silicon steel sheet type
The noise of motor.
Therefore, the slot wedge 1 of the stator core 2 for motor of exemplary embodiment according to the present invention, may be such that motor
Reduce exciting current, improve power factor, work efficiency improves 1%-2%；Slot wedge 1 can reduce core loss about 40% with
Upper, reduction motor heats up and can reduce electromagnetic noise and vibrations, so as to extend electrical machinery life；Further, since slot wedge 1 is by leading
Magnetic sheet is laminated, therefore strengthens the magnetic property of motor, so as to reduce detent torque.
Stator in accordance with an alternative illustrative embodiment of the present invention includes stator core 2 and slot wedge 1 as described above, its
In, slot wedge 1 is plugged in the notch 3 between the adjacent core tooth 21 of stator core 2.
Motor in accordance with an alternative illustrative embodiment of the present invention includes stator as described above.
Magnetic conduction sheet employed in slot wedge 1 as described above can be tack magnetic conduction sheet or press fastening type or
Band cellular type magnetic conduction sheet.Below slot wedge is made by description respectively using tack magnetic conduction sheet and press fastening type or with cellular type magnetic conduction sheet
1 method.As an example, in order to make its general thickness between 5mm-7mm, length is between 300-350mm and cross section
For trapezoidal slot wedge, the thickness of about 15-20 pieces can be used as the silicon steel sheet of 0.35mm in method described below.
Method using the above-mentioned slot wedge of tack magnetic conduction sheet manufacture will be described, the described method includes：Punching is the multiple to be led
Magnetic sheet；The multiple tack magnetic conduction sheet of punching is layered in lamination stack mold, to form layered product 11；Utilize diebolt
The lamination stack mold is fastened to compress layered product 11；Layered product 11 after compression is sent into baking oven, to perform curing；After cured
Layered product 11 cool down after, perform the demoulding；And punching is performed to the layered product 11 after the demoulding to form ventilation slot 12, to obtain
Slot wedge 1.
It is described that to state multiple tack magnetic conduction sheets be tack silicon steel sheet.
During the multiple tack silicon steel sheets of punching, it may be such that the width of multiple tack silicon steel sheets is gradually reduced,
So that it is trapezoidal strip that the multiple tack silicon steel sheet is formed as its cross section.
The method may also include：After the lamination stack mold is fastened using diebolt to compress the layered product,
Height, stacking factor and the end face plane degree of the layered product are can detect, to check whether the bonding between each magnetic conduction sheet is smooth
It is closely knit, if height everywhere, stacking factor and end face plane degree are inconsistent, can by adjust the diebolt of corresponding position into
Row is adjusted.As an example, the pressure controllable system of the layered product is compressed between 3.5MPa-3.6MPa.
After by compression the layered product be sent into baking oven with perform it is cured during, the temperature of the baking oven can be set
For 200 DEG C ± 5 DEG C, constant temperature baking time can be 2h.Then, performed when layered product after cured is cooled to less than 50 DEG C de-
Mould.
In addition, the method may also include：After slot wedge 1 is obtained, the height of the layered product is can detect, to examine herein
Whether the bonding looked between each silicon steel sheet is smooth closely knit.
During punching forms the ventilation slot in the layered product after demoulding, it is preferable that can be in slot wedge 1
Symmetrically punching is formed in the side of two trapezoidal waists to form ventilation slot 12.
In addition, the method can comprise further steps：Formed in the end in the axial direction of stator core 2 of slot wedge 1
15 ° of chamfering, to form bevelled guiding surface；And the corner of adjacent two side of slot wedge 1 is performed at rounding
Reason.
The method may also include：In the surface spraying antirust paint of slot wedge 1, to form rust-preventing film.
The method for making above-mentioned slot wedge by description respectively using press fastening type or with cellular type magnetic conduction sheet below, in following methods
Middle the step of forming ventilation slot etc., forms ventilation slot with described above manufactured using tack magnetic conduction sheet in the method for above-mentioned slot wedge
Deng the step of it is similar or identical, its similar or identical description will be omitted herein, therefore, will only be described with being used described in face below
Different step in the method for the above-mentioned slot wedge of tack magnetic conduction sheet manufacture.
The method of above-mentioned slot wedge is manufactured using press fastening type magnetic conduction sheet may include following steps：The multiple magnetic conduction sheet of punching,
And open up through hole in the multiple magnetic conduction sheet；The multiple magnetic conduction sheet of punching is laminated, each magnetic conduction is passed through using bolt
The through hole of piece and by the multiple magnetic conduction sheet fastening be combined together to form layered product 11；And punching is performed to layered product 11
Hole forms ventilation slot 12, to obtain slot wedge 1.
Following steps may include using the method that above-mentioned slot wedge is manufactured with cellular type magnetic conduction sheet：The multiple magnetic conduction sheet of punching,
And cramp and corresponding cramp groove are set in the side of each magnetic conduction sheet and the opposite side opposite with the side；Make adjacent two
The cramp and cramp groove of a magnetic conduction sheet carry out clinching combination, and the multiple magnetic conduction sheet stacking compression is formed layered product 11；With
And punching is performed to layered product 11 to form ventilation slot 12, to obtain slot wedge 1.
The groove of slot wedge and the above method manufacture of the stator core for motor of exemplary embodiment using the present invention
The Stator and electrical machine of wedge including the slot wedge can efficiently reduce harmonic wave and improve air-gap flux distribution, to improve the work of motor
Make efficiency and rated power, while can also reduce that the motor feels hot, extend the service life of motor.
Although the exemplary embodiment with reference to the present invention specifically illustrates and the invention has been described, this area is common
It is to be understood by the skilled artisans that in the case where not departing from the spirit and scope of the present invention being defined by the claims, can be to it
The various changes of carry out form and details.
Claims (15)
1. the slot wedge of a kind of stator core for motor, it is characterised in that the slot wedge (1) includes being laminated by multiple magnetic conduction sheets
And the layered product (11) formed, and the layered product (11) is in strip, wherein, it is provided with the slot wedge (1) multiple logical
Wind groove (12), the ventilation slot (12) are formed along layered product (11) described in the radial penetration of the stator core (2).
2. slot wedge as claimed in claim 1, it is characterised in that the position of the ventilation slot (12) and quantity respectively with it is described fixed
The position of the air duct of sub- iron core (2) and quantity are corresponding, and are installed to the stator core (2) in the slot wedge (1)
In the state of in notch (3), the ventilation slot (12) connects with the corresponding air duct.
3. slot wedge as claimed in claim 1, it is characterised in that the magnetic conduction sheet includes silicon steel sheet.
4. slot wedge as claimed in claim 3, it is characterised in that the magnetic conduction sheet is tack silicon steel sheet.
5. slot wedge as claimed in claim 3, it is characterised in that lead in the layered product (11) between two adjacent silicon steel sheets
Clinching mode is crossed to combine；Or
The corresponding position of the multiple silicon steel sheet is provided with through hole, bolt through each silicon steel sheet the through hole and will described in
Multiple silicon steel sheet fastenings are combined together.
6. slot wedge as claimed in claim 1, it is characterised in that the slot wedge (1) in the axial direction of the stator core (2)
End formed with bevelled guiding surface.
7. slot wedge as claimed in claim 1, it is characterised in that the cross section of the slot wedge (1) is trapezoidal, the slot wedge (1)
Formation two trapezoidal waists side extended line formed by angle between 45 °~70 °, the table of the slot wedge (1)
Face is provided with rust-preventing film.
8. a kind of stator, it is characterised in that the stator includes the stator core (2) and such as any one of claim 1-7
The slot wedge (1), the slot wedge (1) are plugged in the notch (3) of the stator core (2).
9. a kind of motor, it is characterised in that the motor includes stator as claimed in claim 8.
A kind of 10. method for manufacturing slot wedge as claimed in claim 1, it is characterised in that the described method includes：
The multiple magnetic conduction sheet of punching；
The multiple magnetic conduction sheet of punching is layered in lamination stack mold, to form the layered product (11)；
The lamination stack mold is fastened using diebolt to compress the layered product (11)；
The layered product (11) after compression is sent into baking oven, to perform curing；
After the layered product (11) cooling after cured, the demoulding is performed；And
Punching is performed to the layered product (11) after the demoulding to form the ventilation slot (12), to obtain the slot wedge (1),
Wherein, the magnetic conduction sheet is tack magnetic conduction sheet.
11. method as claimed in claim 10, it is characterised in that the method further includes：
After fastening the lamination stack mold using diebolt to compress the layered product (11), the layered product (11) is detected
Highly, stacking factor and end face plane degree；And/or
After the slot wedge (1) is obtained, the height of the layered product (11) is detected.
12. method as claimed in claim 10, it is characterised in that the multiple tack magnetic conduction sheet is tack silicon steel sheet.
13. method as claimed in claim 10, it is characterised in that the method further includes：In the slot wedge (1) described
End in the axial direction of stator core (2) forms bevelled guiding surface；Rust-preventing film is formed on the surface of the slot wedge (1).
A kind of 14. method for manufacturing slot wedge as claimed in claim 1, it is characterised in that the described method includes：
The multiple magnetic conduction sheet of punching, and open up through hole in the multiple magnetic conduction sheet；
The multiple magnetic conduction sheet of punching is laminated, using bolt through the through hole of each magnetic conduction sheet and by the multiple magnetic conduction
Piece fastening is combined together to form the layered product (11)；And
Punching is performed to the layered product (11) to form the ventilation slot (12), to obtain the slot wedge (1).
A kind of 15. method for manufacturing slot wedge as claimed in claim 1, it is characterised in that the described method includes：
The multiple magnetic conduction sheet of punching, and the side of each magnetic conduction sheet and the opposite side opposite with the side set cramp and
Corresponding cramp groove；
The cramp and cramp groove for making two adjacent magnetic conduction sheets carry out clinching combination, and the multiple magnetic conduction sheet is laminated and compresses shape
Into the layered product (11)；And
Punching is performed to the layered product (11) to form the ventilation slot (12), to obtain the slot wedge (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711440919.2A CN107979203A (en) | 2017-12-27 | 2017-12-27 | Slot wedge, Stator and electrical machine and the method for manufacturing the slot wedge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711440919.2A CN107979203A (en) | 2017-12-27 | 2017-12-27 | Slot wedge, Stator and electrical machine and the method for manufacturing the slot wedge |
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| CN107979203A true CN107979203A (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711440919.2A Pending CN107979203A (en) | 2017-12-27 | 2017-12-27 | Slot wedge, Stator and electrical machine and the method for manufacturing the slot wedge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110380531A (en) * | 2019-06-27 | 2019-10-25 | 康富科技股份有限公司 | A kind of dedicated no-brush synchronous generator of UPS |
| DE102018221570A1 (en) | 2018-12-12 | 2020-06-18 | Robert Bosch Gmbh | Holding element of a rotor of an electric motor for holding windings |
| EP3700064A4 (en) * | 2018-08-30 | 2021-04-21 | Xinjiang Goldwind Science & Technology Co., Ltd. | Slot wedge element, stator device, motor, and wind turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3700064A4 (en) * | 2018-08-30 | 2021-04-21 | Xinjiang Goldwind Science & Technology Co., Ltd. | Slot wedge element, stator device, motor, and wind turbine |
| AU2019327891B2 (en) * | 2018-08-30 | 2021-10-07 | Goldwind Science & Technology Co., Ltd. | Slot wedge element, stator device, motor, and wind turbine |
| US11489394B2 (en) | 2018-08-30 | 2022-11-01 | Xinjiang Goldwind Science & Technology Co., Ltd. | Slot wedge element, stator device, motor, and wind turbine |
| DE102018221570A1 (en) | 2018-12-12 | 2020-06-18 | Robert Bosch Gmbh | Holding element of a rotor of an electric motor for holding windings |
| CN110380531A (en) * | 2019-06-27 | 2019-10-25 | 康富科技股份有限公司 | A kind of dedicated no-brush synchronous generator of UPS |
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Application publication date: 20180501 |