CN107681796A - Combining structure stator inner surface structure - Google Patents
Combining structure stator inner surface structure Download PDFInfo
- Publication number
- CN107681796A CN107681796A CN201711040600.0A CN201711040600A CN107681796A CN 107681796 A CN107681796 A CN 107681796A CN 201711040600 A CN201711040600 A CN 201711040600A CN 107681796 A CN107681796 A CN 107681796A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- stator
- magnetic conduction
- conduction sheet
- slot
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
- H02K3/493—Slot-closing devices magnetic
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
Abstract
The present invention discloses a kind of combining structure stator inner surface structure, using the united application that magnetic conduction main body magnetic slot-seal and the stator toothing with V-shaped groove are made up of magnetic conduction sheet, eliminate conventional structure magnetic slot wedge intensity and reliability deficiency and leakage magnetic flux increase problem, air gap harmonic wave is greatly lowered, reaching reduces the miscellaneous consumption of generator, improves efficiency, improves generator performance index, improves the purpose of reliability.
Description
Technical field：
The present invention relates to a kind of combining structure stator inner surface structure.
Background technology：
Generator stator core, which need to slot, inlays stator winding, due to the difference of magnetic property, makes air-gap field distribution production
Changing, the flutter component being distributed along air gap is formed, eddy-current loss is produced on generator amature surface, be the miscellaneous consumption of generator
Main component；The phenomenon had both produced loss, declined generator efficiency, also causes rotor surface overheat, adds generator
Temperature rise, influence the output and insulation life of generator；Loss caused by flutter component and generator rated speed, stator slot
The factors such as number, void dimension are related, and these key parameters are often what is determined by generator master-plan, with generator techniques
Parameter is related, and for some designs, such as the design of large turbo-type generator, particularly number of stator slots, less electromagnetic scheme, past
Toward contradiction as generation：I.e. the loss of flutter component, which exceeds, is expected, and reduces the efficiency of generator；And take increase stator slot
The technical scheme of number or increase void dimension, although the loss of flutter component can be reduced, adds manufacturing cost or increasing
Big excitation loss, also changes alternator performance parameter.
For the problem, often solves the problem using magnetic slot-seal on middle and small motor, magnetic slot-seal can increase
The magnetic property at stator rabbet position, to reduce the amplitude of air gap flutter component, and to reduce loss caused by flutter component；But
There is also deficiency for the technology：Although being the amplitude that magnetic slot-seal can reduce air gap flutter component first, leakage field is also increased
Reduction of fractions to a common denominator amount, bring and be lost and reduce motor performance, this problem is must be balanced against on slot wedge magnetic property, is otherwise difficult to reach pre-
Phase effect；On the other hand, the structure design of slot wedge, selection and manufacturing technology are also immature, are such as molded magnetic slot-seal, magnetic lamination
Slot wedge, Yin order magnetic slot-seal, the magnetic filling slot wedge etc. of plate processing, actually reach performance and fall flat, and magnetic
The alternate stress that slot wedge is acted on by rotor magnetic pull, fatigue problem is produced, the damage phenomenon that comes off often occur, cause to run thing
Therefore；Particularly in terms of large turbo-type generator, magnetic pull problems in role is more prominent；Large turbo-type generator electromagnetic load is non-
Chang Gao, compact-sized, ventilating and cooling is limited, and is reduced stray loss and is particularly important for improving generator performance index, must
Must solve the problems, such as the structural strength of magnetic slot-seal；Meanwhile it is increased not with magnetic slot-seal to also bring along stator winding leakage magnetic flux
Sharp consequence, so, the magnetic property of magnetic slot-seal have to be lower than stator toothing, thus limit the increasing of stator winding leakage magnetic flux
Add, under this restrictive condition, the air gap harmonic suppression effect individually reached with magnetic slot-seal is limited, and this causes large-scale steamer
Generator reduces stray loss technology and is difficult to break through.
The content of the invention：It is an object of the invention to provide a kind of combining structure stator inner surface structure, using built-in magnetic conduction sheet
Magnetic slot-seal open V-shaped groove structure with stator tooth head and be combined, the distribution for improving air-gap field can be reached, reduce air gap pulsation
The amplitude of component, the purpose for reducing flutter component loss, the drawbacks of overcoming conventional structure magnetic slot wedge mechanical strength deficiency, knot
Structure intensity can resist magnetic pull caused by large turbo-type generator and act on, than individually obtaining smoother gas with magnetic slot-seal
Gap waveform, further reduces air gap losses, using the combining structure stator inner surface structure of the present invention, can reduce generator
Loss, temperature rise is reduced, improve generator efficiency, extend generator service life.
The technical scheme is that：The tooth head surface of stator core has a groove (1) of v-shaped structure, in stator slot wedge (2)
Containing the magnetic conduction construction being made up of magnetic conduction sheet (3) closed assembly, magnetic conduction sheet (3) is shaped as width dimensions and is less than groove width by punching silicon-steel
And height dimension is less than the rectangular configuration of slot wedge thickness, there is the flange (7) exposed to slot wedge top surface the upper end of magnetic conduction sheet (3),
There is nonwoven fabric mat (4) between adjacent magnetic conduction sheet (3), nonwoven fabric mat (4) shape is identical with slot wedge section, but appearance and size is small
In slot wedge section, magnetic conduction sheet (3), nonwoven fabric mat (4) have size and position identical punching, epoxy glass fabric laminated rod
(5) punching is passed through, epoxy resin protective layer (6) wraps magnetic conduction sheet (3), nonwoven fabric mat (4), epoxy glass fabric laminated rod (5)
Cover and be integrally formed structure.
Technique effect：
Magnetic slot-seal of the present invention is made up of the magnetic conduction main body of slot wedge magnetic conduction sheet, has made the magnetic property at stator rabbet position
Improve, air gap harmonic amplitude is minimized as caused by stator slot effect, and the stray loss thus brought also decreases；Lead
Magnetic sheet can reduce loss using silicon steel sheet manufacture, because the width dimensions of magnetic conduction sheet are less than groove width, make itself and stator tooth it
Between form non-magnetic gap, to horizontal leakage magnetic flux produce obstruction, mitigate the stator leakage field brought using conventional structure magnetic slot wedge
Logical increase phenomenon；Nonwoven fabric mat shape is identical with slot wedge section, but appearance and size is less than slot wedge section, can make groove as far as possible
The integral anti-shearing shearing stress of wedge is enhanced；The flange exposed to slot wedge top surface of magnetic conduction sheet upper end can be by warm caused by itself
Air gap can be directly delivered to, is avoided because the cladding of epoxy resin causes temperature rise too high；There is nonwoven fabric mat to keep away between magnetic conduction sheet
Exempt to produce electric short circuit between magnetic conduction sheet, reduce eddy-current loss, nonwoven fabric mat can also adsorb epoxy resin, strengthen magnetic conduction sheet
Combine between each other, strengthen slot wedge bulk strength；Epoxy glass fabric laminated rod through punching turns into rivet by magnetic conduction sheet, nonwoven
Cloth pad connection is integrally formed, and bulk strength is improved, and nonwoven fabric mat makes epoxy resin protective layer structure be strengthened, and keeps away
Exempt from glass resin protective layer and bear electromagnetic force, epoxy resin protective layer is by magnetic conduction sheet, nonwoven fabric mat, epoxy glass fabric laminated rod
Cladding turns into overall structure, plays bonding and insulating effect, avoids producing electrically vortex between magnetic conduction sheet and stator iron-core lamination
Loss；The technical program is provided with the groove of v-shaped structure in stator tooth head position, and the groove of the v-shaped structure makes tooth head central part
Position lack part permeability magnetic material, adds the magnetic resistance of the position, forces the part magnetic line of force at this to be diverted to tooth head both sides position, make
Magnetic line of force degree of saturation into tooth head both sides position improves, and the magnetic line of force degree of saturation at tooth head both sides position, which improves then change, determines
The distribution of the magnetic line of force in pilot trench, makes the increase of magnetic flux in stator slot；So it is provided with the recessed of v-shaped structure in stator tooth head position
After groove, the magnetic flux distribution of stator tooth head position, stator rabbet position and corresponding air gap can change, i.e., one originally
Complete tooth head magnetic flux crest distribution can split into two magnetic flux crest distributions, play increase stator tooth slot number amount to a certain extent
Effect, in stator slot in the presence of magnetic flux increase, the ratio of magnetic flux trough in the magnetic flux crest and stator slot of tooth head position
Value can also reduce, i.e. harmonic wave intensity decreases, and equally also reach the effect for reducing harmonic loss；And the groove of v-shaped structure
Both sides are the arc surfaces overlapped with stator core inner circle, and uniform air gap can be formed between rotor surface, also can be with iron
Heart slide plate forming face contacts, and reduces pressure, meets that support pulls and pushes the requirement of rotor holding power, avoids damaging by pressure table in stator core
Face；Meanwhile the cooling gas that the structure of V-arrangement can make to flow into air gap out of stator air duct is preferably spread, and also can
Make preferably to be guided from the cooling gas that air gap enters in stator core air duct, reduce ventilation eddy-current loss, reduce wind
Resistance, hydro-generator ventilation cooling performance is improved, reduce temperature rise, improve efficiency；In stator tooth head position, the groove of v-shaped structure is set
The complete stator tooth head surface of script is set to become two faces, width diminishes, and the eddy-current loss of stator tooth head surface is decreased；
The present invention was both risen using the united application that magnetic conduction main body magnetic slot-seal and the stator toothing with V-shaped groove are made up of magnetic conduction sheet
Reduce the effect of air gap harmonic amplitude to complementing each other, eliminate again conventional structure magnetic slot wedge intensity and reliability deficiency and
Leakage magnetic flux increases problem, and air gap harmonic wave is greatly lowered, and reaching reduces the miscellaneous consumption of generator, improves efficiency, improves generator
Can index, the purpose of raising reliability.
Brief description of the drawings：
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is magnetic slot-seal schematic diagram.
Fig. 3 is section diagrammatic cross-section where magnetic conduction sheet.
Fig. 4 is section diagrammatic cross-section where nonwoven fabric mat.
Fig. 5 is conventional art stator tooth header structure flux pulsation and air gap magnetic line of force distribution schematic diagram.
Fig. 6 is the pulsation of technical solution of the present invention air-gap flux and magnetic line of force distribution schematic diagram.
Fig. 7 is the present invention and the fluctuation of conventional art air gap flux density and the variation tendency schematic diagram of amplitude.
Embodiment：As shown in Figure 1, Figure 2, Figure 3, Figure 4, the tooth head surface of stator core has the groove of v-shaped structure
1, stator slot wedge 2 includes the magnetic conduction construction being made up of the closed assembly of magnetic conduction sheet 3, and magnetic conduction sheet 3 is shaped as width dimensions by punching silicon-steel
Less than groove width and height dimension is less than the rectangular configuration of slot wedge thickness, and the upper end of magnetic conduction sheet 3 has exposed to the convex of slot wedge top surface
Edge 7, there is nonwoven fabric mat 4 between adjacent magnetic conduction sheet 3, the shape of nonwoven fabric mat 4 is identical with slot wedge section, but appearance and size is less than
Slot wedge section, magnetic conduction sheet 3, nonwoven fabric mat 4 have size and position identical punching, and epoxy glass fabric laminated rod 5 passes through punching
Hole, epoxy resin protective layer 6 coat magnetic conduction sheet 3, nonwoven fabric mat 4, epoxy glass fabric laminated rod 5 as overall structure；This
Invention magnetic slot-seal is made up of the magnetic conduction main body of slot wedge magnetic conduction sheet, the magnetic property at stator rabbet position is increased, magnetic conductance
Rate is increased, and air gap harmonic amplitude is minimized as caused by stator slot effect, and the stray loss thus brought is also
Reduce；Magnetic conduction sheet can reduce loss using silicon steel sheet manufacture, because the width dimensions of magnetic conduction sheet are less than groove width, make itself with determining
Non-magnetic gap is formed between sub- tooth, obstruction is produced to horizontal leakage magnetic flux, mitigates the stator leakage flux brought using magnetic slot-seal
Increase phenomenon；Nonwoven fabric mat shape is identical with slot wedge section, but appearance and size is less than slot wedge section, can make slot wedge as far as possible
Integral anti-shearing shearing stress be enhanced；The flange exposed to slot wedge top surface of upper end can directly pass heat energy caused by itself
Air gap is delivered to, is avoided because the cladding of epoxy resin causes temperature rise too high；There is nonwoven fabric mat to avoid magnetic conduction sheet between magnetic conduction sheet
Between produce electric short circuit, reduce eddy-current loss, nonwoven fabric mat uses carbon fiber or glass fibre material, nonwoven fabric mat
Epoxy resin can be adsorbed, strengthens magnetic conduction sheet and combines between each other, strengthen slot wedge bulk strength；Through the epoxy glass fabric of punching
Laminated rod turns into rivet and is integrally formed magnetic conduction sheet, nonwoven fabric mat connection, and bulk strength is improved, and nonwoven fabric mat makes ring
Oxygen tree fat protective layer structure is strengthened, and avoids epoxy resin protective layer from bearing electromagnetic force, epoxy resin protective layer by magnetic conduction sheet,
Nonwoven fabric mat, epoxy glass fabric laminated rod are overmolding to as overall structure, play bonding and insulating effect, avoid magnetic conduction sheet with it is fixed
Electric eddy-current loss is produced between sub- iron-core lamination；The tooth head all surfaces of the stator core of conventional art be with stator core
The arc surface that circle overlaps, forms uniform air gap between rotor surface, can also be contacted with slide plate forming face unshakable in one's determination, reduces pressure
By force, meet that support pulls and pushes the requirement of rotor holding power, avoid damaging stator core inner surface by pressure；Because stator core is by magnetic conductivity
Silicon steel sheet it can form well, and the stator bar and stator slot wedge in stator slot are all nonmagnetic substances, stator magnetic flux is assembled
In in stator tooth by, and the quantity that passes through in stator slot is reduced, make originally equally distributed stator magnetic flux formed with fixed
The magnetic flux that sub- tooth, the regularity of distribution of groove change, through air gap and rotor surface, rotor will cut pulsation relative to stator rotation
Magnetic flux produces vortex, produces and is lost and generates heat；According to calculating and qualitative analysis, it is strong that the size of the loss depends on ripple harmonic
Degree, i.e. width and the ratio of air gap value depending on stator tooth head, the width of stator tooth head and the more big then arteries and veins of the ratio of air gap value
Dynamic harmonic wave intensity is higher, loss is bigger, and air gap value is determined by generator electromagnetic design and mechanical structure, although increase air gap value can
To reduce stray loss, but excitation loss can be also increased, decline generator efficiency, temperature rise improves, or even can not meet maximum
Contribute and require；Increase number of stator slots method can only be taken by reducing the width of stator tooth head, but number of stator slots is also dependent on generating electricity
The electromagnetic design scheme of machine, for a kind of generator of the specific type of cooling, under certain classical insulation requirement, its
Number of stator slots is exactly the numerical value of a determination, it is impossible to is arbitrarily changed, so the numerical value that the width of stator tooth head is just to determine substantially；
, should although the purpose that number of stator slots reaches reduction stator tooth head width can be increased using the method for increase parallel branch number
Way can increase the dosage of stator bar major insulation, reduce thorax effective rate of utilization in stator, and the increase of the loss brought can be offset
The reduction of miscellaneous consumption, does not reach expected purpose；Increased stator bar quantity also increases considerably manufacturing cost, so only
Purpose for increase cooling surface area will not generally use this way；Due to structure limitation and stator leakage flux problem limit
System, although using magnetic slot-seal, the magnetic property of magnetic slot-seal is still far below stator tooth, produces the air gap internal tooth effect of grooves
Harmonic components it is still higher, the technical program stator tooth head position be provided with v-shaped structure groove, the v-shaped structure it is recessed
Groove makes tooth head centre lack part permeability magnetic material, adds the magnetic resistance of the position, forces the part magnetic line of force at this to be diverted to
Tooth head both sides position, the magnetic line of force degree of saturation at tooth head both sides position is caused to improve, the magnetic line of force saturation journey at tooth head both sides position
Degree improves the distribution that can then change the magnetic line of force in stator slot, makes the increase of magnetic flux in stator slot；So in stator tooth head position
After the groove of v-shaped structure, the magnetic flux distribution of stator tooth head position, stator rabbet position and corresponding air gap can be sent out
Changing, i.e., one originally complete tooth head magnetic flux crest distribution can split into two magnetic flux crest distributions, rise to a certain extent
To the effect of increase stator tooth slot number amount, in stator slot in the presence of magnetic flux increase, the magnetic flux crest of tooth head position is with determining
The ratio of magnetic flux trough can also reduce in pilot trench, i.e. harmonic wave intensity decreases, and equally also reach the effect for reducing harmonic loss；
It is the arc surface overlapped with stator core inner circle and the both sides of the groove of v-shaped structure are as conventional structure, can be with rotor table
Uniform air gap is formed between face, can also be contacted with slide plate forming face unshakable in one's determination, reduces pressure, meets that support pulls and pushes rotor support
The requirement of power, avoid damaging stator core inner surface by pressure；Meanwhile the structure of V-arrangement can make to flow into air gap out of stator air duct
Cooling gas is preferably spread, and can also make to obtain preferably from the cooling gas that air gap enters in stator core air duct
Guiding, reduce ventilation eddy-current loss, reduce windage, improve hydro-generator ventilation cooling performance, reduce temperature rise, improve efficiency；Fixed
Sub- tooth head position sets the groove of v-shaped structure the complete stator tooth head surface of script is become two faces, and width diminishes, and it is fixed to make
The eddy-current loss of sub- tooth head surface decreases；Fig. 5 is conventional art stator tooth header structure flux pulsation and the air gap magnetic line of force point
Cloth schematic diagram, Fig. 6 are that technical solution of the present invention air-gap flux is pulsed and magnetic line of force distribution schematic diagram, comparison diagram 5 and Fig. 6, can be with
Find out, the air gap flux density vibration frequency of technical solution of the present invention is two times of conventional art, and fluctuating range is greatly lowered, thus
Reaching reduces the effect of stray loss, and Fig. 7 is contrast chart, and A is that air gap waveform, the B of conventional art structure are structure of the present invention
Air gap waveform, can more intuitively find out the variation tendency of air gap flux density vibration frequency and amplitude；The present invention is using by magnetic conduction
The united application that piece forms magnetic conduction main body magnetic slot-seal and the stator toothing with V-shaped groove eliminates conventional structure magnetic slot wedge
Intensity and reliability deficiency and leakage magnetic flux increase problem, both having played to complement each other reduces the effect of air gap harmonic amplitude, makes again
Air gap harmonic wave is greatly lowered, and reaching reduces the miscellaneous consumption of generator, improves efficiency, improves generator performance index, improves reliability
Purpose.
Claims (1)
1. a kind of combining structure stator inner surface structure, it is characterized in that：The tooth head surface of stator core has the groove of v-shaped structure
(1), stator slot wedge (2) includes the magnetic conduction construction being made up of magnetic conduction sheet (3) closed assembly, and magnetic conduction sheet (3) is shaped as by punching silicon-steel
Width dimensions are less than groove width and height dimension is less than the rectangular configuration of slot wedge thickness, and the upper end of magnetic conduction sheet (3) has exposed to groove
The flange (7) of wedge top surface, there are nonwoven fabric mat (4), nonwoven fabric mat (4) shape and slot wedge section between adjacent magnetic conduction sheet (3)
It is identical, but appearance and size is less than slot wedge section, and magnetic conduction sheet (3), nonwoven fabric mat (4) have size and position identical punching,
Epoxy glass fabric laminated rod (5) passes through punching, and epoxy resin protective layer (6) is by magnetic conduction sheet (3), nonwoven fabric mat (4), epoxy glass
Glass cloth laminated rod (5) cladding turns into overall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711040600.0A CN107681796A (en) | 2017-10-31 | 2017-10-31 | Combining structure stator inner surface structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711040600.0A CN107681796A (en) | 2017-10-31 | 2017-10-31 | Combining structure stator inner surface structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107681796A true CN107681796A (en) | 2018-02-09 |
Family
ID=61142706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711040600.0A Pending CN107681796A (en) | 2017-10-31 | 2017-10-31 | Combining structure stator inner surface structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107681796A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638991A (en) * | 2018-11-30 | 2019-04-16 | 南通大学 | The punching of high-voltage permanent magnet synchronous motor stator and wound stator and motor |
| CN112448516A (en) * | 2020-11-02 | 2021-03-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator core, stator structure, motor, compressor and air conditioner with stator core and stator structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1513780B2 (en) * | 1966-03-14 | 1975-12-18 | Garbe Lahmeyer & Co Ag, 5100 Aachen | Magnetic locking wedge for open slots in an electrical machine |
| US5086245A (en) * | 1990-03-06 | 1992-02-04 | S1 Montevideo Technology, Inc. | Brushless DC motor slotted tooth lamination |
| CN1949406A (en) * | 2005-10-10 | 2007-04-18 | 四川大学 | Composite soft magnetic powder magnetic conducting material for slot wedge of electric machine and preparation thereof |
| CN201118306Y (en) * | 2007-11-06 | 2008-09-17 | 上海南洋电机有限公司 | Fall-prevention magnetic slot wedge for electromotor |
-
2017
- 2017-10-31 CN CN201711040600.0A patent/CN107681796A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1513780B2 (en) * | 1966-03-14 | 1975-12-18 | Garbe Lahmeyer & Co Ag, 5100 Aachen | Magnetic locking wedge for open slots in an electrical machine |
| US5086245A (en) * | 1990-03-06 | 1992-02-04 | S1 Montevideo Technology, Inc. | Brushless DC motor slotted tooth lamination |
| CN1949406A (en) * | 2005-10-10 | 2007-04-18 | 四川大学 | Composite soft magnetic powder magnetic conducting material for slot wedge of electric machine and preparation thereof |
| CN201118306Y (en) * | 2007-11-06 | 2008-09-17 | 上海南洋电机有限公司 | Fall-prevention magnetic slot wedge for electromotor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638991A (en) * | 2018-11-30 | 2019-04-16 | 南通大学 | The punching of high-voltage permanent magnet synchronous motor stator and wound stator and motor |
| CN112448516A (en) * | 2020-11-02 | 2021-03-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator core, stator structure, motor, compressor and air conditioner with stator core and stator structure |
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Application publication date: 20180209 |
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