CN109617277A - The oblique pole method of permanent magnet machine rotor - Google Patents
The oblique pole method of permanent magnet machine rotor Download PDFInfo
- Publication number
- CN109617277A CN109617277A CN201811574859.8A CN201811574859A CN109617277A CN 109617277 A CN109617277 A CN 109617277A CN 201811574859 A CN201811574859 A CN 201811574859A CN 109617277 A CN109617277 A CN 109617277A
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- Prior art keywords
- rotor
- rotor core
- section
- installation
- core
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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
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
-
- 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
Abstract
The invention discloses the oblique pole methods of permanent magnet machine rotor in permanent magnet synchronous motor technical field, comprising the following steps: asymmetrical multiple keyways A, are arranged in the shaft of rotor；B, multipiece rotor iron core is formed with rotor punching, selects every two-stage rotor iron core for a pair, selecting even-even rotor core is one group；C, even number set rotor core is symmetrically mounted in shaft, and each pair of two-stage rotor iron core is mounted in same keyway；D, certain angle will be deflected between adjacent two pairs of rotor cores in every group.The present invention can weaken slot ripples, improve motor cogging torque and torque pulsation, improve cogging torque bring adverse effect present in existing magneto use process.
Description
Technical field
The present invention relates to permanent magnet synchronous motor technical fields, and in particular to a kind of oblique pole method of permanent magnet machine rotor.
Background technique
Magneto is compared with traditional excitation electromotor with structure is simple, loss is small, power factor is high, high-efficient, power
The distinguishing features such as density high, starting torque is big, temperature rise is low, lightweight.With rare earth permanent-magnetic material (especially Nd-Fe-B permanent magnetic material
Material) magnetic property continuous improvement and improve and price gradually reduces, magneto research and development are gradually mature, make Permanent Magnet and Electric
Machine national defence, industrial and agricultural production and in terms of be more and more widely used.
Different from other kinds of motor, the main field of permanent magnet synchronous motor is distributed according to certain rules by being fixed on rotor
Permanent magnet generate, for improve permanent magnet utilization efficiency, manufacture compact-sized motor, often air gap is smaller, therefore air gap
Flux density distribution is affected by stator slot.This has attracted cogging torque for motor operation, keeps output torque unstable, meeting
Cause fluctuation, motor oscillating and the noise of revolving speed.Especially in variable speed drives, if the frequency of cogging torque consolidating close to system
There is frequency, can cause to resonate, increases noise.It causes back-emf harmonic wave to aggravate for motor power supply, power factor (PF) is caused to reduce.
Summary of the invention
The invention is intended to provide permanent magnet machine rotor oblique pole method, to improve present in existing magneto use process
Cogging torque bring adverse effect.
In order to achieve the above objectives, basic technology scheme of the invention is as follows: the oblique pole method of permanent magnet machine rotor, including following
Step:
A, asymmetrical multiple keyways are set in the shaft of rotor；
B, multipiece rotor iron core is formed with rotor punching, selects every two-stage rotor iron core for a pair, selects even-even rotor core
It is one group；
C, even number set rotor core is symmetrically mounted in shaft, and each pair of two-stage rotor iron core is mounted on same keyway
It is interior；
D, certain angle will be deflected between adjacent two pairs of rotor cores in every group.
The principle of this programme is: by the way of rotor core step skewed pole, so that slot ripples is in its 360 ° of electrical angle models
It is uniformly distributed in enclosing as multiple vectors, to weaken tooth-harmonic emf and cogging torque to the greatest extent.Multiple asymmetrical keys
Slot for the installation in different angles in shaft of multipiece rotor iron core to form skewed-rotor angle, by rotor core in groups, at
To distribution convenient for being symmetrically distributed in shaft, so that the corresponding vector of multipiece rotor iron core is uniform in 360 ° of electrical angles
Distribution.
The advantages of this programme, is: rotor core being formed segmentation tiltedly in shaft using asymmetric keyway is arranged in shaft
Pole realizes skewed-rotor purpose, can effectively weaken cogging torque and slot ripples；Use that the even number set being symmetrically installed, every group is even
It is several to, it is each pair of be that the axial additional force that two rotor cores generate both ends of the shaft because of rotor core can cancel out each other, both disappeared
Except cogging torque, additional axial force is also eliminated, noise and vibration are reduced.
Further, in step C in each pair of rotor core one section of rotor core another section of rotor core relatively along key slot center
Line overturning installation.As preferably more preferable to the eradicating efficacy of cogging torque in this way.
Further, same position in step B on the shaft hole inner wall of every section of rotor core processes mark slot, in step C
Installation site of the every section of rotor core in shaft is guided with the position mark of mark slot.As preferably in this manner more
Convenient for accurately carrying out the installation of rotor core, convenient for checking the oblique pole result of permanent magnet machine rotor.
Further, two group rotor iron cores are used in step C, every group with two pairs of rotor cores so that having eight in shaft side by side
Section rotor core.Theoretically rotor segment number is more, and the effect of oblique pole is better, however increases the false manual labour skill production of segments meeting
Complexity reduces the reliability of motor, is meeting motor performance requirement as the quantity preferably using above-mentioned rotor core
There is preferable process operability simultaneously.
Further, rotor core, first segment rotor iron are installed since shaft is far from one end of rotary transformer in step C
Mark slot position after core installation thereon is in the left side of its keyway installed.Preferably, in this way to first segment rotor core
The benchmark installed as other rotor cores of installation, the installation of subsequent rotor core can be guided.
Further, the installation of second segment rotor core is on the basis of first segment rotor core, and second segment rotor core is with
It is mounted in same keyway after the center line overturning one side of the keyway of one section of rotor core installation with first segment rotor core, the
Mark slot position on two sections of rotor cores is in the right side of its keyway installed.As be preferably placed such that second segment rotor core with
First segment rotor core is symmetrical with the center line overturning of same keyway, makes first segment using asymmetry of the keyway in shaft
Deflection is generated between rotor core and second segment rotor core forms oblique pole.
Further, third section rotor core rotates 176.25 ° on the basis of first segment rotor core, is mounted in shaft another
In one keyway, the mark slot position on third section rotor core is in the left side of its keyway installed.As preferably being kept in this way with the
On the basis of one section of rotor core, the oblique pole of third section rotor core is carried out with determining angle, so that the skewed-rotor tool formed
There is certain continuity, there is better cogging torque eradicating efficacy.
Further, the installation of the 4th section of rotor core is on the basis of third section rotor core, and the 4th section of rotor core is with
It is mounted in same keyway after the center line overturning one side of the keyway of three-stage rotor iron core installation with third section rotor core, the
Mark slot position on four sections of rotor cores is in the right side of its keyway installed.As preferred such 4th section of rotor core and third
Section rotor core is symmetrical with the center line overturning of same keyway, makes first segment rotor using asymmetry of the keyway in shaft
Deflection is generated between iron core and second segment rotor core forms oblique pole.
Further, the installation of the 5th section of rotor core repeats the installation steps of the 4th section of rotor core, the 6th section of rotor iron
The installation of core repeats the installation steps of third section rotor core, and the installation of the 7th section of rotor core repeats second segment rotor core
The installation of installation steps, the 8th section of rotor core repeats the installation steps of first segment rotor core.As preferably in this way using same
The mounting means of sample carries out the installation of the five, the six, seven, eight sections of rotor cores, with the 4th section of rotor core and the 5th section of rotor iron
The oblique pole structure of similar V-type is collectively formed in the symmetrical two group rotors iron core in gap between core, two group rotor iron cores, and eight turn
Sub- iron core is in reverse inclination direction in shaft, and the additional axial force of generation cancels out each other, both eliminates cogging torque, also eliminate attached
Add pulsation axial force, reduce noise and vibration, and the punching of rotor core is same size, it is easy to process, convenient for control at
This.
Detailed description of the invention
Fig. 1 is the main view that the shaft after rotor core is installed in the embodiment of the present invention；
Fig. 2 is the cross-sectional view in the direction A-A in Fig. 1；
Fig. 3 is the cross-sectional view in the direction B-B in Fig. 1；
Fig. 4 is the cross-sectional view in the direction C-C in Fig. 1；
Fig. 5 is the cross-sectional view in the direction D-D in Fig. 1.
Specific embodiment
It is further described below by specific embodiment:
Appended drawing reference in Figure of description includes: rotor core 1, shaft 2, keyway 3, mark slot 4.
Embodiment is substantially as shown in Fig. 1: the oblique pole method of permanent magnet machine rotor, comprising the following steps:
A, asymmetrical two keyways 3 are processed in the shaft of rotor 2；
B, eight sections of rotor cores 1 are formed with rotor punching, every section of rotor core 1 is cylindrical shape, selects every two-stage rotor iron
Core 1 is a pair, and selecting two pairs of rotor cores 1 is one group, processes mark slot in the same position of the shaft hole inner wall of every section of rotor core 1
4, mark slot 4 is half slot；
C, two group rotor iron cores 1 are symmetrically mounted in shaft 2, and each pair of two-stage rotor iron core 1 is mounted on same key
In slot 3；
C-1, as shown in connection with fig. 2 installs rotor core 1 since 2 left end of shaft, after first segment rotor core 1 is installed its
On mark slot 4 be located at its installation keyway 3 upper left side；
C-2, as shown in connection with fig. 3, on the basis of first segment rotor core 1, second segment turns for the installation of second segment rotor core 1
It is mounted on after the center line overturning one side for the keyway 3 that sub- iron core 1 is installed with first segment rotor core 1 with first segment rotor core 1
In same keyway 3, the mark slot 4 on second segment rotor core 1 is located at the lower left side of the keyway 3 of its installation；
C-3, as shown in connection with fig. 4, third section rotor core 1 rotate 176.25 ° on the basis of first segment rotor core 1, peace
In shaft 2 in another keyway 3, the mark slot 4 on third section rotor core 1 is located at the lower right side of the keyway 3 of its installation；
C-4, as shown in connection with fig. 5, on the basis of third section rotor core 1, the 4th section turns for the installation of the 4th section of rotor core 1
It is mounted on after the center line overturning one side for the keyway 3 that sub- iron core 1 is installed with third section rotor core 1 with third section rotor core 1
In same keyway 3, the mark slot 4 on the 4th section of rotor core 1 is located at the upper right side of the keyway 3 of its installation；
The installation of C-5, as shown in connection with fig. 1, the 5th section of rotor core 1 repeat the installation steps of the 4th section of rotor core 1, the
The installation of six sections of rotor cores 1 repeats the installation steps of third section rotor core 1, and the installation of the 7th section of rotor core 1 repeats the
The installation of the installation steps of two sections of rotor cores 1, the 8th section of rotor core 1 repeats the installation steps of first segment rotor core 1；
D, after rotor assembly, with weight reduction dynamic balance checking, 1 brush iron oxide red anticorrosive paint of rotor core, in 2 bearing of shaft
Position, oil sealing position apply antirust oil.
Claims (9)
1. the oblique pole method of permanent magnet machine rotor, it is characterised in that: the following steps are included:
A, asymmetrical multiple keyways are set in the shaft of rotor；
B, multipiece rotor iron core is formed with rotor punching, selects every two-stage rotor iron core for a pair, selecting even-even rotor core is one
Group；
C, sagittal plane of the even number set rotor core in the middle part of shaft is symmetrically mounted in shaft, and each pair of two-stage rotor iron core
It is mounted in same keyway；
D, by deflection angle between two pairs of rotor cores adjacent in every group.
2. the oblique pole method of permanent magnet machine rotor according to claim 1, it is characterised in that: will be each pair of in the step C
Two-stage rotor iron core is mounted in the step in same keyway one section of rotor core another section of rotor relatively in each pair of rotor core
Iron core overturns along key slot center line and installs.
3. the oblique pole method of permanent magnet machine rotor according to claim 2, it is characterised in that: turn in the step B at every section
Same position on the shaft hole inner wall of sub- iron core processes mark slot, guides every section with the position mark of mark slot in the step C
Installation site of the rotor core in shaft.
4. the oblique pole method of permanent magnet machine rotor according to claim 3, it is characterised in that: use two groups in the step C
Rotor core, every group with two pairs of rotor cores so that there is eight sections of rotor cores in shaft side by side.
5. the oblique pole method of permanent magnet machine rotor according to claim 4, it is characterised in that: remote from shaft in the step C
One end from rotary transformer starts to install rotor core, and the mark slot position after the installation of first segment rotor core thereon is in its installation
Keyway left side.
6. the oblique pole method of permanent magnet machine rotor according to claim 5, it is characterised in that: the installation of second segment rotor core
On the basis of first segment rotor core, the center line overturning one for the keyway that second segment rotor core is installed with first segment rotor core
It is mounted in same keyway behind face with first segment rotor core, the mark slot position on second segment rotor core is in the key of its installation
The right side of slot.
7. the oblique pole method of permanent magnet machine rotor according to claim 6, it is characterised in that: third section rotor core is with first
176.25 ° are rotated on the basis of section rotor core, is mounted in shaft in another keyway, the mark slot position on third section rotor core
In the left side of the keyway of its installation.
8. the oblique pole method of permanent magnet machine rotor according to claim 7, it is characterised in that: the installation of the 4th section of rotor core
On the basis of third section rotor core, the center line overturning one for the keyway that the 4th section of rotor core is installed with third section rotor core
It is mounted in same keyway behind face with third section rotor core, the mark slot position on the 4th section of rotor core is in the key of its installation
The right side of slot.
9. the oblique pole method of permanent magnet machine rotor according to claim 8, it is characterised in that: the installation of the 5th section of rotor core
The installation steps of the 4th section of rotor core are repeated, the installation of the 6th section of rotor core repeats the installation step of third section rotor core
Suddenly, the installation of the 7th section of rotor core repeats the installation steps of second segment rotor core, and the installation of the 8th section of rotor core repeats
The installation steps of first segment rotor core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574859.8A CN109617277A (en) | 2018-12-21 | 2018-12-21 | The oblique pole method of permanent magnet machine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574859.8A CN109617277A (en) | 2018-12-21 | 2018-12-21 | The oblique pole method of permanent magnet machine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109617277A true CN109617277A (en) | 2019-04-12 |
Family
ID=66010461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811574859.8A Pending CN109617277A (en) | 2018-12-21 | 2018-12-21 | The oblique pole method of permanent magnet machine rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109617277A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111245126A (en) * | 2020-02-25 | 2020-06-05 | 合肥巨一动力系统有限公司 | Permanent magnet motor oblique pole structure for new energy automobile |
| CN114244051A (en) * | 2021-12-27 | 2022-03-25 | 厦门金龙汽车新能源科技有限公司 | High-efficiency permanent magnet synchronous motor |
| CN114342220A (en) * | 2019-09-11 | 2022-04-12 | 纬湃科技有限责任公司 | Rotor for an electric machine |
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| CN203850942U (en) * | 2014-05-28 | 2014-09-24 | 华域汽车电动系统有限公司 | Four-segmented inclined-pole permanent magnet motor rotor formed by single punching sheets |
| KR20150109504A (en) * | 2014-03-19 | 2015-10-02 | 전자부품연구원 | Interior buried permanent magnet synchronous machine and rotator thereof |
| CN205945292U (en) * | 2016-08-21 | 2017-02-08 | 安徽安凯汽车股份有限公司 | PMSM rotor is utmost point structure to one side |
| CN106533104A (en) * | 2016-12-28 | 2017-03-22 | 卧龙电气集团股份有限公司 | Straight and oblique pole integrated rotor punching plate of permanent magnet synchronous motor and permanent magnet synchronous motor |
| CN206135582U (en) * | 2016-08-31 | 2017-04-26 | 广州精传科技有限公司 | Rotor sectional type is utmost point structure to one side |
| CN106849431A (en) * | 2017-03-31 | 2017-06-13 | 苏州汇川联合动力系统有限公司 | Step skewed pole rotor and permagnetic synchronous motor |
| CN208190371U (en) * | 2018-04-18 | 2018-12-04 | 东风汽车电气有限公司 | A kind of permanent-magnetic synchronous motor rotor |
-
2018
- 2018-12-21 CN CN201811574859.8A patent/CN109617277A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150109504A (en) * | 2014-03-19 | 2015-10-02 | 전자부품연구원 | Interior buried permanent magnet synchronous machine and rotator thereof |
| CN203850942U (en) * | 2014-05-28 | 2014-09-24 | 华域汽车电动系统有限公司 | Four-segmented inclined-pole permanent magnet motor rotor formed by single punching sheets |
| CN205945292U (en) * | 2016-08-21 | 2017-02-08 | 安徽安凯汽车股份有限公司 | PMSM rotor is utmost point structure to one side |
| CN206135582U (en) * | 2016-08-31 | 2017-04-26 | 广州精传科技有限公司 | Rotor sectional type is utmost point structure to one side |
| CN106533104A (en) * | 2016-12-28 | 2017-03-22 | 卧龙电气集团股份有限公司 | Straight and oblique pole integrated rotor punching plate of permanent magnet synchronous motor and permanent magnet synchronous motor |
| CN106849431A (en) * | 2017-03-31 | 2017-06-13 | 苏州汇川联合动力系统有限公司 | Step skewed pole rotor and permagnetic synchronous motor |
| CN208190371U (en) * | 2018-04-18 | 2018-12-04 | 东风汽车电气有限公司 | A kind of permanent-magnetic synchronous motor rotor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114342220A (en) * | 2019-09-11 | 2022-04-12 | 纬湃科技有限责任公司 | Rotor for an electric machine |
| CN111245126A (en) * | 2020-02-25 | 2020-06-05 | 合肥巨一动力系统有限公司 | Permanent magnet motor oblique pole structure for new energy automobile |
| CN114244051A (en) * | 2021-12-27 | 2022-03-25 | 厦门金龙汽车新能源科技有限公司 | High-efficiency permanent magnet synchronous motor |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190412 |
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| RJ01 | Rejection of invention patent application after publication |