CN114552900A - Optimization method of unequal-tooth-width-groove special-shaped groove type motor stator punching sheet and iron core - Google Patents
Optimization method of unequal-tooth-width-groove special-shaped groove type motor stator punching sheet and iron core Download PDFInfo
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- 238000004080 punching Methods 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005457 optimization Methods 0.000 title claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000004088 simulation Methods 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims description 27
- 230000001788 irregular Effects 0.000 claims description 21
- 230000004907 flux Effects 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 6
- 238000010923 batch production Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims 2
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 206010066054 Dysmorphism Diseases 0.000 description 13
- 230000008859 change Effects 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000009828 non-uniform distribution Methods 0.000 description 1
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- 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
- H02K15/0006—Disassembling, repairing or modifying dynamo-electric machines
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- 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
- H02K1/14—Stator cores with salient poles
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- 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
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses an optimization method of a stator punching sheet of a motor with unequal tooth width slots and special-shaped slot type and an iron core, wherein the optimization method comprises the steps of firstly designing the basic shape of the stator punching sheet through the product cost, and then designing an initial slot type according to the power range and the efficiency requirement of the motor; then, magnetic field simulation is carried out on the stator punching sheet through magnetic circuit simulation software, various magnetic circuit data are obtained, and the stator groove type and the tooth width of different parts of the stator punching sheet are adjusted according to the obtained magnetic circuit data; the optimization method can further optimize and adjust the actual current situation that the magnetic circuits of all parts of the stator punching sheet are uneven, so that the magnetic circuits of the whole stator punching sheet are uniformly distributed, the utilization rate of silicon steel sheet materials of the punching sheet is improved, and the efficiency improvement and the cost control of a motor are facilitated; under the condition of the same number of turns and current, the motor iron loss of the electronic punching sheet designed by the method is reduced, and the output torque is improved.
Description
Technical Field
The invention relates to the technical field of compressor motor stator punching, in particular to an optimization method of unequal tooth width groove special-shaped groove type motor stator punching and an iron core.
Background
The single-phase asynchronous motor used in the refrigerator compressor industry has a plurality of groove types,
1. the number of stator slot types is typically 24 slots (also a 30 slot design); 2. for example, as shown in the attached fig. 1 and fig. 2 of the specification, the stator groove type is generally a round bottom groove or a pear-shaped groove, and the size grooves are distributed (the design of all 24 grooves is also the same groove type); 3. the tooth widths of the stators are all equal no matter in a round bottom groove or a pear-shaped groove. The stator punching sheet with the structure has uneven magnetic circuits at all parts, so that the overall magnetic circuit load of the punching sheet is uneven, the utilization rate of silicon steel sheets of the punching sheet is reduced, and the efficiency improvement and the cost control of a motor are not facilitated.
Chinese utility model patent (publication No. CN201290031Y) discloses in 2009 a motor stator core punching sheet structure, which comprises a yoke portion, a tooth portion, a slot for inserting a wire, and a central hole, wherein the slot for inserting a wire is communicated with the central hole, the slot for inserting a wire has two or more different groove shapes, each groove shape of the slot for inserting a wire adopts the measures of unequal tooth widths, unequal groove depths, and unequal division, so that the division rule changes along the axis of each polar group, and the change rule is the same between each polar group. Although the patent proposes that the stator punching sheets are optimized in a mode of unequal tooth widths and unequal groove depths, the optimization is not suitable for the performance requirements of the existing refrigeration compressor, and how to optimize the stator punching sheets on the basis of not increasing the cost and not reducing the overall performance of the motor is not considered.
Disclosure of Invention
The invention aims to provide an optimization method of a stator punching sheet of a non-uniform tooth width groove special-shaped groove type motor and an iron core, aiming at the problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the optimization method comprises the steps of firstly designing the basic shape of a stator punching sheet through the product cost, and then designing an initial slot type according to the power range and the efficiency requirement of a motor; then, performing magnetic field simulation on the initial groove type of the stator punching sheet through magnetic circuit simulation software, acquiring various magnetic circuit data, and adjusting the stator groove type and the tooth width of different parts of the stator punching sheet according to the acquired magnetic circuit data;
the magnetic circuit data comprise magnetic flux intensity and magnetic flux density data of a stator tooth part and a stator yoke part, and the shape of the outer contour of the stator punching sheet is adjusted according to uneven distribution of the magnetic flux intensity at each position of the stator tooth part and the stator yoke part and uneven spacing between a stator slot and the outer contour of the stator punching sheet; and aiming at the different magnetic densities of the stator tooth parts at different positions and the different magnetic densities of the stator yoke parts, the stator groove is adjusted to be a special-shaped groove, and the tooth width is adjusted to be different tooth widths.
The optimization method can further optimize and adjust the actual current situation that the magnetic circuits of all parts of the stator punching sheet are uneven, so that the magnetic circuits of the whole stator punching sheet are uniformly distributed, the utilization rate of silicon steel sheet materials of the punching sheet is improved, and the efficiency improvement and the cost control of the motor are facilitated.
By adopting the optimization method, the magnetic field intensity of the main magnetic circuit is greatly reduced from the magnetic field cloud chart and the test data, so that the motor torque is improved, the motor efficiency is improved, and the motor loss is reduced. Under the condition of the same number of turns and current, the motor iron loss of the electronic punching sheet designed by the method is reduced, and the output torque is improved.
According to the power range and the efficiency requirement, a conventional groove type is designed, and after the conventional groove type is designed, the conventional groove type is adjusted into a special-shaped groove, and the area of each groove is kept unchanged.
The optimization method considers the cost of the whole machine, considers the performance of the whole machine, reduces the product cost and improves the product performance, and the optimization can not change the original scheme (basic shape) in a large area and a large extent, and has better producibility and practicability. Under the condition that the outer contour of the stator punching sheet is unchanged and the punching sheet cost is unchanged or reduced, the efficiency and the output torque of the motor are improved, and the cost performance of the product is greatly improved.
Furthermore, the stator tooth part at least selects more than six test points on different groove types for testing, and at least selects two test points on each tooth type; and at least selecting more than five pairs of test points on different groove types for testing the stator yoke part, wherein pairwise symmetry is a pair.
The arrangement of a plurality of test point positions on a plurality of groove types fully considers the position conditions of the tooth parts and the yoke parts, so that data obtained by simulation can be more accurately reflected, and the actual magnetic field condition of the stator punching sheet is closer to that of the stator punching sheet; and the magnetic field distribution conditions under different tooth widths at symmetrical positions can be obviously seen from the paired selected test points, so that a basis is provided for selecting the tooth widths.
Further, in the process of carrying out magnetic field simulation, after the groove shape and the tooth width are adjusted once, magnetic field simulation is carried out again, the simulation result is compared with the initial scheme and the previous scheme, and proper results are gradually optimized and selected as the basis of batch production of stator products. Through multiple comparison and tests, the optimal scheme can be determined before the production of the product, the production cost can be reduced, and the waste of test samples can be reduced.
Furthermore, the size range of an inner hole of the stator punching sheet is 44-65 mm, the tooth width is 2-4.5 mm, the basic size of the stator punching sheet in the current refrigerator compressor is reduced further due to the intelligentization and miniaturization trend of household appliances, the size of the refrigeration compressor is also reduced, the size of the motor and the size of the stator punching sheet of the motor are also gradually miniaturized, and the reduction of the product size while the refrigeration requirement is met is also required by the market.
Further, the stator punching sheet is designed by the optimization method of the unequal-tooth-width groove special-shaped groove type motor stator punching sheet, the stator punching sheet is of a three-screw hole 24-groove structure and has six special-shaped groove types, the six special-shaped groove types comprise a1 st special-shaped groove, a 2 nd special-shaped groove, a 3 rd special-shaped groove, a 4 th special-shaped groove, a 5 th special-shaped groove and a 6 th special-shaped groove, the 24 grooves are vertically and symmetrically arranged in the center of an inner hole of the stator punching sheet, and upper semicircles are sequentially arranged from left to right according to the mode of the special-shaped grooves 1-2-3-4-5-6-5-4-3-1.
Further, if the width of the tooth between a pair of adjacent 1 st shaped grooves is a and the width of the tooth between a pair of adjacent 6 th shaped grooves is b, the widths of the tooth between the 1 st shaped groove and the adjacent 3 rd shaped groove, and between the 1 st shaped groove and the adjacent 2 nd shaped groove are (a + b)/2.
Further, a has a value of 2.4mm, and b has a value of 2.67 mm.
Furthermore, the three screw holes are arranged on the stator punching sheet according to a delta shape, one pair of the three screw holes is arranged on the left side of the stator punching sheet in an up-down symmetrical mode, and the other pair of the three screw holes is arranged on the right middle line of the stator punching sheet.
Further, the rounded corners of both sides of the bottom of the 1 st, 4 th and 5 th profile grooves are R1.5mm and R2mm, respectively, and the rounded corners of both sides of the bottom of the 2 nd, 3 rd and 6 th profile grooves are R2mm, respectively.
The stator punching sheet designed by the method has the advantages that the groove type structure is optimized, and the angle of each groove type is changed and is obviously different from the angle of the initial groove type.
The angle range of the outer contour of the groove bottom of the 12 special-shaped grooves from the left side to the right side of the upper half part of the stator punching sheet is as follows: the included angles of the 1 st irregular groove on the left side and the right side and the vertical line are both 0 degree, the included angle of the 2 nd irregular groove on the left side and the vertical line is 7.5-10 degrees, the included angle of the 3 rd irregular groove on the left side and the vertical line is 37.5-42.5 degrees, the included angles of the 4 th irregular groove on the left side and the right side and the horizontal line are both 20-21.45 degrees, the included angles of the 5 th irregular groove on the left side and the 5 th irregular groove on the right side and the horizontal line are both 0 degree, the included angles of the 6 th irregular groove in the middle and the horizontal line are both 7.5 degrees, and the included angles of the continuous two 3 rd irregular grooves on the right side and the right oblique line are respectively 5-12.5 degrees and 2.5-5 degrees.
Further, the iron core is manufactured by a plurality of unequal tooth width groove special-shaped groove type motor stator punching sheets.
Compared with the prior art, the invention has the beneficial effects that: 1. the optimization method can further optimize and adjust the actual current situation that the magnetic circuits of all parts of the stator punching sheet are uneven, so that the magnetic circuits of the whole stator punching sheet are uniformly distributed, the utilization rate of silicon steel sheet materials of the punching sheet is improved, and the efficiency improvement and the cost control of a motor are facilitated; 2. by adopting the optimization method, the magnetic field intensity of the main magnetic circuit is greatly reduced from the magnetic field cloud chart and the test data, so that the motor torque is improved, the motor efficiency is improved, and the motor loss is reduced. Under the condition of the same number of turns and current, the motor iron loss of the electronic punching sheet designed by the method is reduced, and the output torque is improved; 3. the optimization method considers the cost of the whole machine, considers the performance of the whole machine, reduces the product cost, improves the product performance, does not change the original scheme in a large area and in a large scale, and has better producibility and practicability.
Drawings
FIG. 1 is a prior art circular bottom stator slot configuration;
FIG. 2 is a prior art pear-shaped stator slot structure;
FIG. 3 is a schematic view of the overall structure of a stator punching sheet of a slot type motor with unequal tooth widths and special shapes according to the invention;
FIG. 4 is a schematic view of the whole structure of a stator punching sheet of a slot type motor with unequal tooth widths and special shapes according to the invention;
FIG. 5 is a schematic view of the overall structure of a stator punching sheet of a slot type motor with unequal tooth widths and an abnormal shape according to the invention;
FIG. 6 is a schematic view of the overall structure of a stator punching sheet of a slot type motor with unequal tooth widths and an abnormal shape according to the invention;
FIG. 7 is a schematic view of magnetic field simulation of stator punching sheets of a slot type motor with unequal tooth widths (gray scale is displayed above 1.4T of magnetic field strength);
FIG. 8 is a schematic structural diagram of an initial scheme of a stator punching sheet according to the present invention;
fig. 9 is a schematic view of magnetic field simulation in the initial scheme of the stator punching (the intensity of magnetic field is 1.4T or more, and gray scale is displayed);
FIG. 10 is a schematic view of the overall structure of another unequal tooth width groove special-shaped groove type motor stator punching sheet according to the invention;
FIG. 11 is a schematic view of stator slot included angles in an initial embodiment of the present invention;
FIG. 12 is a schematic view of stator slot included angles in an optimized version of the present invention;
in the figure: numbers 1, 2, 3, 4, 5 and 6 in the groove shape on the stator punching sheet sequentially represent a1 st special-shaped groove, a 2 nd special-shaped groove, a 3 rd special-shaped groove, a 4 th special-shaped groove, a 5 th special-shaped groove and a 6 th special-shaped groove; 7. stator punching sheets; 8. screw holes.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The optimization method comprises the steps of firstly designing the basic shape of a stator punching sheet through the product cost, and then designing an initial slot type according to the power range and the efficiency requirement of a motor; then, magnetic field simulation is carried out on the stator punching sheet through magnetic circuit simulation software, various magnetic circuit data are obtained, and the stator groove type and the tooth width of different parts of the stator punching sheet are adjusted according to the obtained magnetic circuit data;
the magnetic circuit data comprise data of magnetic flux intensity, magnetic flux density and the like of a stator tooth part and a stator yoke part, and the shape of the outer contour of the stator punching sheet is adjusted according to uneven distribution of the magnetic flux intensity at each part of the stator tooth part and the stator yoke part and uneven spacing between a stator slot and the outer contour of the stator punching sheet; and aiming at the different magnetic densities of the stator tooth parts at different positions and the different magnetic densities of the stator yoke parts, the stator groove is adjusted to be a special-shaped groove, and the tooth width is adjusted to be different tooth widths.
The optimization method can further optimize and adjust the actual current situation that the magnetic circuits of all parts of the stator punching sheet are uneven, so that the magnetic circuits of the whole stator punching sheet are uniformly distributed, the utilization rate of silicon steel sheet materials of the punching sheet is improved, and the efficiency improvement and the cost control of the motor are facilitated.
By adopting the optimization method, the magnetic field intensity of the main magnetic circuit is greatly reduced from the magnetic field cloud chart and the test data, so that the motor torque is improved, the motor efficiency is improved, and the motor loss is reduced. Under the condition of the same number of turns and current, the motor iron loss of the electronic punching sheet designed by the method is reduced, and the output torque is improved.
The optimization method considers the cost of the whole machine, simultaneously considers the performance of the whole machine, reduces the product cost, simultaneously improves the product performance, does not change the original scheme (basic shape) in a large area and a large scale, and has better producibility and practicability.
Furthermore, the stator tooth part at least selects more than six test points on different groove types for testing, and at least selects two test points on each tooth type; and at least selecting more than five pairs of test points on different groove types for testing the stator yoke part, wherein pairwise symmetry is a pair.
The arrangement of a plurality of test point positions on a plurality of groove types fully considers the position conditions of the tooth parts and the yoke parts, so that data obtained by simulation can be more accurately reflected, and the actual magnetic field condition of the stator punching sheet is closer to that of the stator punching sheet; and the magnetic field distribution conditions under different tooth widths at symmetrical positions can be obviously seen from the paired selected test points, so that a basis is provided for selecting the tooth widths.
Further, in the process of carrying out magnetic field simulation, after the groove shape and the tooth width are adjusted once, magnetic field simulation is carried out again, the simulation result is compared with the initial scheme and the previous scheme, and proper results are gradually optimized and selected as the basis of batch production of stator products. Through multiple comparison and tests, the optimal scheme can be determined before the production of the product, the production cost can be reduced, and the waste of test samples can be reduced.
Furthermore, the size range of an inner hole of the stator punching sheet is 44-65 mm, the tooth width is 2-4.5 mm, the basic size of the stator punching sheet in the current refrigerator compressor is reduced further due to the intelligentization and miniaturization trend of household appliances, the size of the refrigeration compressor is also reduced, the size of the motor and the size of the stator punching sheet of the motor are also gradually miniaturized, and the reduction of the product size while the refrigeration requirement is met is also required by the market.
The first embodiment is as follows:
as shown in fig. 3 to 7, the stator punching sheet designed by the optimization method of the unequal tooth width groove special-shaped groove type motor stator punching sheet is characterized in that the stator punching sheet 7 is of a 24-groove structure with three screw holes 8 and has six special-shaped groove types, wherein the six special-shaped groove types comprise a1 st special-shaped groove 1, a 2 nd special-shaped groove 2, a 3 rd special-shaped groove 3, a 4 th special-shaped groove 4, a 5 th special-shaped groove 5 and a 6 th special-shaped groove 6, the 24 grooves are vertically and symmetrically arranged in the center of an inner hole of the stator punching sheet, and upper semicircles are sequentially arranged from left to right in a mode of the special-shaped grooves 1-2-3-4-5-6-5-4-3-1.
That is to say stator punching 7 is the structure of longitudinal symmetry, and the semicircle is arranged from a left side to the right side in proper order in the 1 st dysmorphism groove, 2 nd dysmorphism groove, 3 rd dysmorphism groove, 4 th dysmorphism groove, 5 th dysmorphism groove, 6 th dysmorphism groove, 5 th dysmorphism groove, 4 th dysmorphism groove, 3 rd dysmorphism groove and 1 st dysmorphism groove.
Further, if the tooth width between the adjacent pair of the 1 st shaped grooves is a and the tooth width between the adjacent pair of the 6 th shaped grooves is b, the tooth widths between the 1 st shaped groove and the adjacent 3 rd shaped groove, and between the 1 st shaped groove and the adjacent 2 nd shaped groove are (a + b)/2.
Further, a has a value of 2.4mm, and b has a value of 2.67 mm.
With such a size setting, the tooth width between the 1 st special-shaped grooves is reduced, so that the area of the 1 st special-shaped grooves is increased, and under the condition of maintaining the area unchanged, the groove profile can shrink towards the circle center, so that the width of the yoke part is increased.
Set up conventional pyriform groove into the dysmorphism groove for stator yoke portion width that dysmorphism groove outline corresponds is more even, and the outline also can continue to shrink to the centre of a circle simultaneously, finally makes stator yoke portion width grow that 1 outline of dysmorphism groove corresponds, and the homogenization.
The tooth width between the 1 st and 2 nd special-shaped grooves is (2.4+ 2.67)/2; the 2 nd special-shaped groove is adjusted under the condition that the groove-shaped area is ensured to be consistent with the original designed pear-shaped groove, the optimum design value is 10 degrees through simulation confirmation aiming at the stamped sheet with the appearance, as shown in figure 4, the bottom of the groove outer contour is designed into a straight line segment, and actually, the bottom can also be a circular arc with a larger diameter and is similar to a straight line.
As shown in fig. 5, the 1 st irregular slot on the left side, the 2 nd irregular slot on the left bottom, and the 1 st irregular slot and the 3 rd irregular slot on the right side all correspond to the outer contour of the stator punching sheet, and are preferably arranged in parallel with the outer contour of the corresponding side.
Furthermore, the three screw holes are arranged on the stator punching sheet according to a delta shape, one pair of the three screw holes is arranged on the left side of the stator punching sheet in an up-down symmetrical mode, and the other pair of the three screw holes is arranged on the right middle line of the stator punching sheet.
Further, the rounded corners of both sides of the bottom of the 1 st, 4 th and 5 th profile grooves are R1.5mm and R2mm, respectively, and the rounded corners of both sides of the bottom of the 2 nd, 3 rd and 6 th profile grooves are R2mm, respectively.
Comparative example one:
the initial scheme shown in FIG. 8 is compared with the scheme of the first embodiment by simulation, wherein the distance between the groove shape and the outer contour is indicated by an ABCDEF line segment.
Table 1: stator tooth part simulation result of two schemes
| Stator tooth test point flux strength/T | A | B | C | D | E | F |
| Initial protocol/mm | 0.51 | 0.62 | 0.96 | 1.20 | 1.43 | 1.51 |
| After being optimized according to the method/mm | 0.56 | 0.66 | 0.97 | 1.20 | 1.43 | 1.51 |
Table 2: stator yoke part simulation result of two schemes
As shown in tables 1 and 2 and fig. 9, the magnetic flux intensity at each position in the initial scheme is not uniformly distributed, and the reason for the non-uniform distribution is that the distance between the outer contour of the stator slot and the outer contour of the stator punching sheet is not uniform.
After the optimization of the method, as shown in fig. 7, from the magnetic field cloud chart and data of each point, the optimized stator punching sheet greatly reduces the magnetic field intensity of the main magnetic circuit, so that the motor torque is improved, the motor efficiency is improved, the motor loss is reduced, under the condition of the same number of turns and current, the motor iron loss is reduced by 1-2%, and the output torque is improved by 2-3%.
Example two:
the difference between the first embodiment and the second embodiment is that the shape structure of the stator punching sheet is different.
As shown in fig. 10, the stator punching sheet 7 is designed with four screw holes 8 and has a symmetrical structure in the vertical and horizontal directions, and only the groove type in the horizontal middle part and the groove type in the vertical middle part are improved during optimization, the width of the tooth part of the pair of groove types in the horizontal middle part is 3.5mm, the width of the tooth part of the pair of groove types in the vertical middle part is 3.64mm, the widths are also different, and the magnetic flux intensity distribution of the final stator punching sheet is more uniform.
Example three:
in the stator punching sheet designed by the method in the first embodiment, because the groove type structure is optimized, the angle of each groove type is also changed and is obviously different from the angle of the initial groove type.
Table 3: variation of groove included angle under variation of groove structure
The upper part of the stator punching sheet in the table 3 is numbered from left to right by A1-A12, and the optimized stator punching sheet 7 also corresponds to the arrangement of the special-shaped grooves 1-2-3-4-5-6-6-5-4-3-3-1.
As shown in table 3 and fig. 11 and 12, it can be seen that, in the original scheme, the bottom of the groove is substantially circumscribed circle, the circumscribed circle is removed, the remaining two vertexes have a fixed included angle with the vertical direction or the horizontal direction after being connected, and after each groove is fixed, as long as the number of the grooves is fixed (for example, 24 grooves), the angles of the vertical direction and the horizontal direction are also substantially fixed, and the angle change range is smaller, or the angle change range is related to the circumscribed circle. The included angle of the outline of the groove-shaped bottom of the optimized stator punching sheet 7 is optimized, the included angle is not limited by the circumscribed circle, the groove-shaped area of the optimized scheme is larger, the width of a yoke part of the groove shape is wider under the condition that the punching sheet cost is basically the same, and the performance of the motor is favorably improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The optimization method of the stator punching sheet of the motor with the irregular groove shape and the unequal tooth width is characterized in that the optimization method comprises the steps of firstly designing the basic shape of the stator punching sheet through the product cost, and then designing an initial groove shape according to the power range and the efficiency requirement of the motor;
then, performing magnetic field simulation on the initial groove type of the stator punching sheet through magnetic circuit simulation software, acquiring various magnetic circuit data, and adjusting the stator groove type and the tooth width of different parts of the stator punching sheet according to the acquired magnetic circuit data;
the magnetic circuit data comprise magnetic flux intensity and magnetic flux density data of a stator tooth part and a stator yoke part, and the shape of the outer contour of the stator punching sheet is adjusted according to uneven distribution of the magnetic flux intensity at each position of the stator tooth part and the stator yoke part and uneven spacing between a stator slot and the outer contour of the stator punching sheet; and aiming at the different magnetic densities of the stator tooth parts at different positions and the different magnetic densities of the stator yoke parts, the stator groove is adjusted to be a special-shaped groove, and the tooth width is adjusted to be different tooth widths.
2. The optimization method of the stator punching sheet of the unequal-tooth-width slot special-shaped slot type motor as claimed in claim 1, wherein the stator tooth part at least selects more than six test points on different slot types for testing, and at least selects two test points on each tooth type; and at least selecting more than five pairs of test points on different groove types for testing the stator yoke part, wherein pairwise symmetry is a pair.
3. The method for optimizing stator punching sheets of an unequal tooth width slot special-shaped slot motor as claimed in claim 1, wherein in the process of magnetic field simulation, magnetic field simulation is performed again after each slot type and tooth width adjustment, the simulation result is compared with the initial scheme and the previous scheme, and the stator is optimized step by step and a proper result is selected as the basis for batch production of stator products.
4. The optimization method of the stator punching sheet of the motor with the unequal tooth width grooves and the special-shaped groove types is characterized in that the size range of an inner hole of the stator punching sheet is 44-65 mm, and the tooth width is 2-4.5 mm.
5. The stator punching sheet designed according to the optimization method of the unequal tooth width groove special-shaped groove type motor stator punching sheet according to any one of claims 1 to 4 is characterized in that the stator punching sheet is of a three-screw hole 24-groove structure and has six special-shaped groove types, wherein the six special-shaped groove types comprise a1 st special-shaped groove, a 2 nd special-shaped groove, a 3 rd special-shaped groove, a 4 th special-shaped groove, a 5 th special-shaped groove and a 6 th special-shaped groove, the 24 grooves are vertically symmetrically arranged in the center of an inner hole of the stator punching sheet, and an upper semicircle is sequentially arranged from left to right according to the mode of the special-shaped grooves 1-2-3-4-5-6-5-4-3-1.
6. The stator punching sheet designed according to the optimization method of the stator punching sheet of the slot type motor with unequal tooth widths is characterized in that the tooth widths between the adjacent 1 st special-shaped slots are a, the tooth widths between the adjacent 6 th special-shaped slots are b, and the tooth widths between the 1 st special-shaped slot and the adjacent 3 rd special-shaped slot, and between the 1 st special-shaped slot and the adjacent 2 nd special-shaped slot are (a + b)/2.
7. The stator punching designed by the optimization method of the stator punching of the unequal-tooth-width groove special-shaped groove type motor as claimed in claim 6, wherein the value of a is 2.4mm, and the value of b is 2.67 mm.
8. The stator punching sheet designed according to the optimization method of the stator punching sheet of the unequal-tooth-width groove special-shaped groove type motor, which is disclosed by claim 5, is characterized in that the angle range of the outer contour of the groove bottom of 12 special-shaped grooves from the left side to the right side of the upper half part of the stator punching sheet is as follows: the included angles of the 1 st irregular groove on the left side and the right side and the vertical line are both 0 degree, the included angle of the 2 nd irregular groove on the left side and the vertical line is 7.5-10 degrees, the included angle of the 3 rd irregular groove on the left side and the vertical line is 37.5-42.5 degrees, the included angles of the 4 th irregular groove on the left side and the right side and the horizontal line are both 20-21.45 degrees, the included angles of the 5 th irregular groove on the left side and the 5 th irregular groove on the right side and the horizontal line are both 0 degree, the included angles of the 6 th irregular groove in the middle and the horizontal line are both 7.5 degrees, and the included angles of the continuous two 3 rd irregular grooves on the right side and the right oblique line are respectively 5-12.5 degrees and 2.5-5 degrees.
9. The stator punching sheet designed according to the optimization method of the stator punching sheet of the motor with unequal tooth width groove profile is characterized in that the fillets at two sides of the bottom of the 1 st, 4 th and 5 th profiled grooves are respectively R1.5mm and R2mm, and the fillets at two sides of the bottom of the 2 nd, 3 rd and 6 th profiled grooves are respectively R2 mm.
10. An iron core, characterized in that the iron core is made of a plurality of stator laminations designed by the optimization method of the unequal tooth width slot special-shaped slot type motor stator laminations of claim 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210102373.4A CN114552900B (en) | 2022-01-27 | 2022-01-27 | Optimization method of stator punching sheet of irregular tooth width groove special-shaped groove type motor and iron core |
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| CN202210102373.4A CN114552900B (en) | 2022-01-27 | 2022-01-27 | Optimization method of stator punching sheet of irregular tooth width groove special-shaped groove type motor and iron core |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201515299U (en) * | 2009-10-01 | 2010-06-23 | 广东美芝制冷设备有限公司 | single-phase asynchronous motor |
| JP2010284025A (en) * | 2009-06-05 | 2010-12-16 | Fuji Electric Systems Co Ltd | Permanent magnet rotary machine |
| CN201947071U (en) * | 2011-03-01 | 2011-08-24 | 中山大洋电机制造有限公司 | Motor stator lamination |
| CN103746474A (en) * | 2013-09-30 | 2014-04-23 | 广东威灵电机制造有限公司 | Stator core punching sheet, motor stator core and motor |
| CN106329852A (en) * | 2016-10-21 | 2017-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator punching sheet design method, stator punching sheet, stator iron core and motor |
| CN206364608U (en) * | 2017-01-17 | 2017-07-28 | 安徽美芝制冷设备有限公司 | stator punching and stator and compressor |
| CN208062899U (en) * | 2018-05-08 | 2018-11-06 | 珠海凯邦电机制造有限公司 | A kind of chain type stator core stamping sheet and stator core |
| CN208674977U (en) * | 2018-08-17 | 2019-03-29 | 沈阳中航机电三洋制冷设备有限公司 | A kind of stator punching and motor and compressor with it |
| CN209419329U (en) * | 2019-01-31 | 2019-09-20 | 苏州优德通力科技有限公司 | A kind of compact-sized pump motor rotor punching |
| CN212909122U (en) * | 2020-07-14 | 2021-04-06 | 华意压缩机(荆州)有限公司 | Stator punching sheet suitable for small refrigerator compressor motor |
-
2022
- 2022-01-27 CN CN202210102373.4A patent/CN114552900B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010284025A (en) * | 2009-06-05 | 2010-12-16 | Fuji Electric Systems Co Ltd | Permanent magnet rotary machine |
| CN201515299U (en) * | 2009-10-01 | 2010-06-23 | 广东美芝制冷设备有限公司 | single-phase asynchronous motor |
| CN201947071U (en) * | 2011-03-01 | 2011-08-24 | 中山大洋电机制造有限公司 | Motor stator lamination |
| CN103746474A (en) * | 2013-09-30 | 2014-04-23 | 广东威灵电机制造有限公司 | Stator core punching sheet, motor stator core and motor |
| CN106329852A (en) * | 2016-10-21 | 2017-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator punching sheet design method, stator punching sheet, stator iron core and motor |
| CN206364608U (en) * | 2017-01-17 | 2017-07-28 | 安徽美芝制冷设备有限公司 | stator punching and stator and compressor |
| CN208062899U (en) * | 2018-05-08 | 2018-11-06 | 珠海凯邦电机制造有限公司 | A kind of chain type stator core stamping sheet and stator core |
| CN208674977U (en) * | 2018-08-17 | 2019-03-29 | 沈阳中航机电三洋制冷设备有限公司 | A kind of stator punching and motor and compressor with it |
| CN209419329U (en) * | 2019-01-31 | 2019-09-20 | 苏州优德通力科技有限公司 | A kind of compact-sized pump motor rotor punching |
| CN212909122U (en) * | 2020-07-14 | 2021-04-06 | 华意压缩机(荆州)有限公司 | Stator punching sheet suitable for small refrigerator compressor motor |
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| CN114552900B (en) | 2024-02-23 |
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