CN107171468A - A kind of design method of permanent magnet machine rotor segmentation - Google Patents
A kind of design method of permanent magnet machine rotor segmentation Download PDFInfo
- Publication number
- CN107171468A CN107171468A CN201710406249.6A CN201710406249A CN107171468A CN 107171468 A CN107171468 A CN 107171468A CN 201710406249 A CN201710406249 A CN 201710406249A CN 107171468 A CN107171468 A CN 107171468A
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- rotor
- punching
- section
- rotor punching
- convex key
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a kind of design method of permanent magnet machine rotor segmentation, the magneto is provided with stator and rotor, stator punching is installed on stator, the mechanical angle α per groove is determined first, secondly the hop count and every section of height h' of the rotor point are determined, an angle beta will be rotated in the same direction by calculating every section；Rotor includes armature spindle and rotor punching, and rotor punching is sleeved on armature spindle, and the structure of rotor punching includes the first convex key, the second convex key, the first magnetic pole center line and the second magnetic pole center line；The specific design method that four sections of rotor punchings share a punching is：1) design of first paragraph rotor punching concrete structure；2) by the rotor punching segmented mode of the first sequence；3) mode specifically stacked；4) concrete structure design of armature spindle；5) assembling of rotor punching.Design concept of the present invention is ingenious, and the rotor punching of a model is that multistage requirement can be achieved, and simplifies production technology, saves cost of manufacture.
Description
Technical field
The present invention relates to the design side of permanent magnet machine rotor technical field, more particularly to a kind of segmentation of permanent magnet machine rotor
Method.
Background technology
Cogging torque is the inherent characteristic of motor, whether alternating current generator or magneto, and cogging torque is constantly present
, the cogging torque of alternating current generator is in motor operation, and winding occurs just to show during armature-reaction, and the teeth groove of magneto
Torque does not occur just to show in the case of armature-reaction in no power, and clearly.The cogging torque of magneto
It is more much larger than alternating current generator.The presence of cogging torque can make motor torque ripple occur, and noise increases, big cogging torque, very
Extremely motor can be made not start.Eliminating the method for cogging torque has a lot, but most efficient method is using skewed stator slot or turned
Sub tiltedly pole.When skewed stator slot is unfavorable for winding inserting, particularly automatic coil inserting apparatus rule in technique, it is impossible to operate, rotor is oblique
It is extremely fine to alternating current generator, but to magneto, oblique pole magnet steel is produced and processed, skewed-rotor punching is folded, difficulty greatly, can not
OK.Generally, the method for substitution skewed-rotor is rotor segment, and rotor segment contains rotor punching segmentation and magnet steel segmentation.Turn
Son is segmented is to the effect for eliminating cogging torque：The quantity of segmentation is more, and effect is better, in general, is divided to two sections of effect not
It is very good, divide three sections of effect general, point four sections or more than the four sections effects substantially near skewed stator slot or skewed-rotor.Using
After rotor segment, magnet steel can just be processed into square, and technique is simply too much, and rotor punching can build up straight, and lamination is convenient.But
It is that rotor segment is more to make rotor punching appearance and size varied, because the position of magnetic pole between the section and section of rotor is
Differ, each section of rotor is required for a rotor punching die, if dividing four sections it is necessary to open four rotor punching dies, significantly
The cost of investment of mould is added, while after the model increase of rotor punching, management difficulty increase, management is got up all the more difficult.
Therefore, the purpose of four sections of rotor point how is reached using the rotor punching of a model, to reduce high rotor die cost
As those skilled in the art's technical barrier urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of design method of permanent magnet machine rotor segmentation, prior art rotor segmentation is solved
The rotor punching of multiple models is needed, then needs many set rotor punchings to make moulds, there is that complex process, cost of manufacture are high to ask
Topic.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：
A kind of design method of permanent magnet machine rotor segmentation of the present invention, the magneto is provided with stator and rotor, described
Stator punching is installed, the slot number of the stator punching is n, and the mechanical angle per groove is on stator：The ÷ n of α=360；It is described
The axial height of rotor is h, and the height that the rotor is divided into four sections, every section is h'=h/4, four sections of rotors using the center of circle of rotor as
Central point is stacked, since second segment, and every section will rotate in the same direction an angle, and the angle is：2 × the 4=of ÷ of β=α × 2
α/4, i.e., the mechanical angle of the position of magnetic pole between every adjacent two-stage rotor punching presses same direction of rotation rotation β；
The rotor includes armature spindle and rotor punching, and the rotor punching is sleeved on the armature spindle, the rotor
The structure of punching includes the first convex key, the second convex key, the first magnetic pole center line and the second magnetic pole center line, the rotor punching and stator
Punching is used cooperatively, and the specific design method and step that four sections of rotor punchings share a punching is as follows：
1) the first of rotor punching the convex key, the second convex key are designed as the same convex key of specification, the first convex key and the first magnetic
The angle of pole center line is 0.5 β, the direction deviation left side；The angle of second convex key and the second magnetic pole center line is the β of β of β+0.5=1.5, side
To deviation the right；
2) rotor punching of the first sequence is folded and does four sections, every section of height h'=h/4；
3) mode specifically stacked is：It regard the rotor punching of the first sequence as first paragraph；The rotor punching of first sequence is left
Second segment is used as after right upset；The 3rd section is used as after the rotor punching of first sequence is rotated into 180 °；By the rotor punching of the first sequence
Left and right is used as the 4th section after overturning again after 180 ° of rotation；
4) armature spindle symmetry direction is driven into two recessed keyways, the first recessed width of keyway of top is A, the second recessed key of lower section
The width of groove is B；
5) the convex key of first paragraph, second segment, the top of the 3rd section, the 4th section rotor punching is directed at the of the armature spindle
One recessed keyway, successively press-in is installed on armature spindle, and the angle of first paragraph and the 4th section of rotor punching is 3 β after installation.
Further, the rotor punching is equidistantly arranged on the armature spindle.
Further, the width A of the described first recessed keyway and the convex key of the rotor punching size match, described
The width of second recessed keyway is more than the width of the described first recessed keyway, is designed specifically to B=1.5A.
Compared with prior art, advantageous effects of the invention：
A kind of design method of permanent magnet machine rotor segmentation of the present invention, the angle rotated by reasonable computation, a rotor
Punching derives multipiece rotor punching by way of being rotated or turned over, and two convex keys, armature spindle are designed on rotor punching
On design the recessed keyways of two different sizes, it is ensured that rotor punching first paragraph and the 4th section can smoothly be installed to armature spindle
On, so as to only need one set of die to can be realized as the making of multipiece rotor；According to conventional preparation method, four sections of rotors are mounted in
On one roots rotor axle and the angle again between maintaining segment and section is constant, the keyway position of every section of rotor will also differ certain degree
Number, it is necessary to which the rotor punching of four models, four rotor punchings then need four molds, and complex process is with high costs.This hair
Bright design concept is ingenious, solves the problem in rotor of high-power permanent magnet motor stages process, will be existing the need for multiple models
Rotor punching be changed to the rotor punching of a model, simplify production technology, be easy to operation；Save high Mold Making
Cost.
Brief description of the drawings
The invention will be further described for explanation below in conjunction with the accompanying drawings.
Fig. 1 is permanent-magnetic synchronous motor stator punching schematic diagram；
Fig. 2 is the rotor punching schematic diagram of permagnetic synchronous motor prior art；
Fig. 3 is permanent-magnetic synchronous motor rotor punching schematic diagram of the present invention；
Fig. 4 is the 2nd section of punching schematic diagram of rotor after rotor segment of the present invention；
Fig. 5 is the 3rd section of punching schematic diagram of rotor after rotor segment of the present invention；
Fig. 6 is the 4th section of punching schematic diagram of rotor after rotor segment of the present invention；
Fig. 7 is armature spindle sectional view of the present invention；
Fig. 8 is the schematic diagram (partial perspective) after four sections of rotor assemblings of the present invention；
Description of reference numerals：1st, the first convex key；2nd, the second convex key；3rd, the first magnetic pole center line；4th, the second magnetic pole center line；5th, turn
Sub- axle；5-1, the first recessed keyway；5-2, the second recessed keyway.
Embodiment
As shown in figure 1, a kind of design method of permanent magnet machine rotor segmentation, the magneto is provided with stator and rotor,
Stator punching is installed, the slot number of the stator punching is n on the stator, the mechanical angle per groove is the ÷ n of α=360；Institute
The axial height for stating rotor is h, and the height that the rotor is divided into four sections, every section is h'=h/4, and four sections of rotors are with the center of circle of rotor
Centered on point stack, since second segment, every section will rotate in the same direction an angle, and the angle is：The ÷ 2 × 4 of β=α × 2
=α/4, i.e., the mechanical angle of the position of magnetic pole between every adjacent two-stage rotor punching presses same direction of rotation rotation β；
The rotor includes armature spindle 5 and rotor punching, and the rotor punching is sleeved on the armature spindle 5, described turn
The structure of sub- punching includes the first convex key 1, the second convex key 2, the first magnetic pole center line 3 and the second magnetic pole center line 4, the rotor punching
Used cooperatively with stator punching, the specific design method and step that four sections of rotor punchings share a punching is as follows：
1) the first of rotor punching the convex key 1, the second convex key 2 are designed as the same convex key of specification, the first convex key 1 and first
The angle of magnetic pole center line 3 is 0.5 β, the direction deviation left side；The angle of the second convex magnetic pole center line 4 of key 2 and second be the β of β+0.5=
1.5 β, direction deviation the right；
2) rotor punching of the first sequence is folded and does four sections, every section of height h'=h/4；
3) mode specifically stacked is：It regard the rotor punching of the first sequence as first paragraph；The rotor punching of first sequence is left
Second segment is used as after right upset；The 3rd section is used as after the rotor punching of first sequence is rotated into 180 °；By the rotor punching of the first sequence
Left and right is used as the 4th section after overturning again after 180 ° of rotation；
4) symmetry direction of armature spindle 5 is driven into two recessed keyways, the first recessed keyway 5-1 width of top is A, the second of lower section
Recessed keyway 5-2 width is B；
5) the convex key of first paragraph, second segment, the top of the 3rd section, the 4th section rotor punching is directed at the armature spindle 5
First recessed keyway 5-1, successively press-in is installed on armature spindle 5, the folder of first paragraph and the 4th section of rotor punching after installation
Angle is 3 β.
The rotor punching is equidistantly arranged on the armature spindle 5.
The width A and the convex key of the rotor punching of the first recessed keyway 5-1 size match, the second recessed key
Groove 5-2 width is more than the described first recessed keyway 5-1 width, is designed specifically to B=1.5A.
Embodiments of the invention：
Design principle, disappears in permagnetic synchronous motor whether by skewed stator slot, skewed-rotor, or rotor segment
Except cogging torque, oblique angle is equal to the mechanical angle of one groove of stator.
Fig. 1 is the permanent-magnetic synchronous motor stator punching of the pole of 48 groove 8,48 groove stator punchings, the mechanical angle of its every groove
For α=360 ° ÷ 48=7.5 °；
Fig. 2 is the rotor punching of this motor, and the axial height for setting the rotor of motor is h=100mm, by rotor point four
Section, then every section of height is 100 ÷ 4=25mm；The center of circle of four sections of rotors using rotors gathers into folds it as midpoint, is opened from second segment
Begin, every section will rotate in the same direction an angle, and this angle beta is：The ÷ (2 × 4)=1.875 ° of β=7.5 ° × 2, i.e. section with
The mechanical angle of position of magnetic pole between section rotates 1.875 ° by same direction of rotation.
Specific design method and step is as follows：
1) as shown in figure 3, being designed with the same convex key of two specifications on rotor punching, i.e., the first convex key of convex key 1 and second
2；The angle of the wherein first convex magnetic pole center line 3 of key 1 and first be 0.5 β=0.9375 °, direction deviation the left side, the second convex key 2 with
The angle of second magnetic pole center line 4 is 1.5 β=2.8125 °, direction deviation the right；
2) rotor punching of the first sequence is folded and does four sections, every section of height h'=h/4=25mm；
3) it regard the rotor punching shown in Fig. 3 as first paragraph；As shown in figure 4, by after first paragraph rotor punching or so flange
It is used as second segment；As shown in figure 5, being used as the 3rd section after first paragraph rotor punching is rotated into 180 °；As shown in fig. 6, by first paragraph
Left and right flange is used as the 4th section again after 180 ° of rotor punching rotation；
4) section of armature spindle 5 is as shown in fig. 7, its symmetry direction is machined with two recessed keyways, the first recessed keyway of top
5-1 width is identical with the convex width of key of rotor punching, may be designed as 5mm, and the recessed keyway 5-2 in lower section second width is greater than
First recessed keyway 5-1 of side, may be designed as 7mm, and the space having more is used for the rotor punching with second segment, the 3rd section and the 4th section
Installation；
5) direction as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, by first paragraph, second segment, the 3rd section, the 4th section rotor punching
The convex key of top is directed at the first recessed keyway 5-1 of the armature spindle 5, and press-in successively is installed on armature spindle 5, as shown in figure 8, this
Sample just completes the block assembly of four sections of rotor punchings；First paragraph and the 4th section of rotor magnetic pole center line have rotated after installation
5.6250 °, the two ends of rotor face that links at the 4th section of rotor punching magnetic pole midpoint have rotated 7.5 °.
In above-mentioned design, using a kind of rotor punching of model, rotor point is done four sections, the mesh of the present invention has been reached
's.According to the method for rotor segment of the present invention, rotor point can also be done three sections, if dividing three sections, every section of anglec of rotation a=
7.5 ° of ÷ × 2 (2 × 3)=2.5 °, it is the purpose that three sections of a rotor punching point can be achieved to repeat above step.
In order to produce in batches, assembling when be not easy to obscure, can rotor punching surface select one it is not right
The point of title is marked, such as the marking serial numbers 1 on one section of rotor punching, marking serial numbers 2, three-stage rotor on two sections of rotor punchings
Marking serial numbers 4 on marking serial numbers 3 in punching, four sections of rotor punchings, quickly and accurately distinguish each section of rotor when being easily installed
Order and orientation.
Embodiment described above is only that the preferred embodiment of the present invention is described, and not the scope of the present invention is carried out
Limit, on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art make to technical scheme
Various modifications and improvement, all should fall into claims of the present invention determination protection domain in.
Claims (3)
1. a kind of design method of permanent magnet machine rotor segmentation, it is characterised in that：The magneto is provided with stator and rotor, institute
State and stator punching is installed on stator, the slot number of the stator punching is n, and the mechanical angle per groove is：The ÷ n of α=360；Institute
The axial height for stating rotor is h, and the height that the rotor is divided into four sections, every section is h'=h/4, and four sections of rotors are with the center of circle of rotor
Centered on point stack, since second segment, every section will rotate in the same direction an angle, and the angle is：The ÷ of β=α × 2 (2 ×
4)=α/4, i.e., the mechanical angle of the position of magnetic pole between every adjacent two-stage rotor punching presses same direction of rotation rotation β；
The rotor includes armature spindle (5) and rotor punching, and the rotor punching is sleeved on the armature spindle (5), described turn
The structure of sub- punching includes the first convex key (1), the second convex key (2), the first magnetic pole center line (3) and the second magnetic pole center line (4), described
Rotor punching is used cooperatively with stator punching, and the specific design method and step that four sections of rotor punchings share a punching is as follows：
1) the first of rotor punching the convex key (1), the second convex key (2) are designed as the same convex key of specification, the first convex key (1) and the
The angle of one magnetic pole center line (3) is 0.5 β, the direction deviation left side；The angle of second convex key (2) and the second magnetic pole center line (4) for β+
The β of 0.5 β=1.5, direction deviation the right；
2) rotor punching of the first sequence is folded and does four sections, every section of height h'=h/4；
3) mode specifically stacked is：It regard the rotor punching of the first sequence as first paragraph；Rotor punching by the first sequence or so is turned over
Second segment is used as after turning；The 3rd section is used as after the rotor punching of first sequence is rotated into 180 °；The rotor punching of first sequence is rotated
Left and right is used as the 4th section after overturning again after 180 °；
4) armature spindle (5) symmetry direction is driven into two recessed keyways, the first recessed keyway (5-1) width of top is A, the second of lower section
The width of recessed keyway (5-2) is B；
5) the convex key of first paragraph, second segment, the top of the 3rd section, the 4th section rotor punching is directed at the of the armature spindle (5)
One recessed keyway (5-1), successively press-in is installed on armature spindle (5), first paragraph and the 4th section of rotor punching after installation
Angle is 3 β.
2. the design method of permanent magnet machine rotor segmentation according to claim 1, it is characterised in that：Described rotor punching etc.
Spacing is arranged on the armature spindle (5).
3. the design method of permanent magnet machine rotor segmentation according to claim 1, it is characterised in that：The first recessed keyway
The width A of (5-1) and the convex key of the rotor punching size match, and the width of the second recessed keyway (5-2) is more than institute
The width of the first recessed keyway (5-1) is stated, B=1.5A is designed specifically to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406249.6A CN107171468A (en) | 2017-06-02 | 2017-06-02 | A kind of design method of permanent magnet machine rotor segmentation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406249.6A CN107171468A (en) | 2017-06-02 | 2017-06-02 | A kind of design method of permanent magnet machine rotor segmentation |
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| Publication Number | Publication Date |
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| CN107171468A true CN107171468A (en) | 2017-09-15 |
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| CN201710406249.6A Pending CN107171468A (en) | 2017-06-02 | 2017-06-02 | A kind of design method of permanent magnet machine rotor segmentation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400664A (en) * | 2018-05-15 | 2018-08-14 | 佛山市朗特电机有限公司 | A kind of permanent-magnet motor rotor assembly |
| CN109361280A (en) * | 2018-04-18 | 2019-02-19 | 东风汽车电气有限公司 | A kind of permanent-magnetic synchronous motor rotor |
| CN109861482A (en) * | 2018-12-29 | 2019-06-07 | 中国第一汽车股份有限公司 | A kind of used in new energy vehicles Rotor Assembly |
| CN111082567A (en) * | 2020-01-16 | 2020-04-28 | 中国第一汽车股份有限公司 | Motor rotor and permanent magnet synchronous motor |
| DE102020201982A1 (en) | 2020-02-18 | 2021-08-19 | Vitesco Technologies Germany Gmbh | Rotor for an electrical machine and method of manufacture |
| DE102020201978A1 (en) | 2020-02-18 | 2021-08-19 | Vitesco Technologies Germany Gmbh | Rotor for an electrical machine and method of manufacture |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361280A (en) * | 2018-04-18 | 2019-02-19 | 东风汽车电气有限公司 | A kind of permanent-magnetic synchronous motor rotor |
| CN108400664A (en) * | 2018-05-15 | 2018-08-14 | 佛山市朗特电机有限公司 | A kind of permanent-magnet motor rotor assembly |
| CN109861482A (en) * | 2018-12-29 | 2019-06-07 | 中国第一汽车股份有限公司 | A kind of used in new energy vehicles Rotor Assembly |
| CN111082567A (en) * | 2020-01-16 | 2020-04-28 | 中国第一汽车股份有限公司 | Motor rotor and permanent magnet synchronous motor |
| DE102020201982A1 (en) | 2020-02-18 | 2021-08-19 | Vitesco Technologies Germany Gmbh | Rotor for an electrical machine and method of manufacture |
| DE102020201978A1 (en) | 2020-02-18 | 2021-08-19 | Vitesco Technologies Germany Gmbh | Rotor for an electrical machine and method of manufacture |
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