CN203691089U - Rotor core and stator core - Google Patents
Rotor core and stator core Download PDFInfo
- Publication number
- CN203691089U CN203691089U CN201320604288.4U CN201320604288U CN203691089U CN 203691089 U CN203691089 U CN 203691089U CN 201320604288 U CN201320604288 U CN 201320604288U CN 203691089 U CN203691089 U CN 203691089U
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- rotor core
- core
- rotor
- stator
- stator core
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Abstract
The utility model discloses a rotor core and a stator core. The rotor core is composed of a plurality of laminated rotor punching sheets. Permanent magnets are uniformly distributed on the rotor core, and the permanent magnets are alternately arranged according to N-S polarity. The permanent magnets can be mounted on the surface of the rotor core, and also can be inlaid in the rotor core. The whole rotor core is divided into two independent parts along an axial direction. The center line of a pole arc of a magnetic pole of one, part of the rotor core is deviated at an angle (dislocation) in the circumferential direction from the center line of a pole arc of a magnetic pole of the other part of the rotor core, and the angle is equal to a half of the included angle between two adjacent stator slots. The stator core corresponding to the dislocated rotor core is a straight slot stator core composed of a plurality of stators punching sheets. The cooperation of the straight slot stator core and the dislocated rotor core provides a new way to weaken the harmonic electric potential of tooth harmonics, lower the additional torque caused by the magnetic field of the tooth harmonics, reduce the electromagnetic vibration and noise of the motor, and improve the efficiency of the motor.
Description
Technical field
The utility model relates to a kind of rotor core and has the motor of this rotor core, belongs to technical field of motors.
Background technology
Along with the development of modern industry, the running precision to various plant equipment, stationarity require more and more higher, require in addition the environmental noise of reduction work, life.Motor is the main power source of plant equipment, and vibration, the noise of motor are more and more concerned, and the vibration and the noise that solve motor are that design of electrical motor personnel and motor factory must face.The reason that motor produces electromagnetic vibration noise is a lot, and the means that reduced harmonic reduces vibration noise are also a lot, as stator adopts short distance winding, uses magnetic slot-seal etc.
Motor internal has the harmonic wave of various frequencies, and when stator core adopts distribution short distance winding, other harmonic amplitude except slot ripples is all by the weakening of very big degree, but slot ripples is influenced hardly.
In middle and small motor, often adopt the measure of skewed stator slot in order to weaken tooth-harmonic emf, skewed slot is generally by oblique stator winding straight line portion 1 stator slot distance, the phase place of the tooth-harmonic emf of responding on conductor like this staggers mutually, the electromotive force of each section of conductor carries out vector addition, thereby greatly weakens tooth-harmonic emf.
For asynchronous machine, because the stator core of motor and rotor core all slot, thereby cause whole air gap circumference range magnetic resistance inhomogeneous, electromagnetic torque fluctuation corresponding to induced electromotive force when motor operation.If rotor core adopts after skewed slot, the electromagnetic torque forming and induced electromotive force are similar to same roots rotor sliver and are evenly distributed on one section of mean value in circumference range, can effectively weaken the harmonic wave electromotive force that harmony wave produces, thereby weaken the additional torque being caused by these harmonic fields, reduce electric and magnetic oscillation and noise, therefore middle-size and small-size cast-aluminum rotor asynchronous machine generally adopts rotor chute.
Concerning large-scale self-starting permanent magnet synchronous motor or permagnetic synchronous motor, stator coil adopts harder flat type copper wire, if adopt skewed slot technology, implements certain difficulty in technique.If become the oblique utmost point, rotor starting cage bar to be designed to oblique cage rotor design, it is larger that technique realizes difficulty.
Utility model content
In view of existing motor slot ripples inhibition technology is not suitable with large-scale permagnetic synchronous motor or self-starting permanent magnet synchronous motor, the utility model proposes a kind of new motor rotor core structure, coordinate straight trough stator core, can effectively weaken tooth-harmonic emf and torque, thus vibration and noise while having reduced motor operation.
The utility model has adopted following technical scheme: rotor core is formed by multi-disc rotor punching closed assembly, rotor core is uniformly distributed placement permanent magnet, be staggered by N-S polarity, permanent magnet can Surface Mount on rotor core surface, also can be embedded in rotor core inside.Whole rotor core is divided into independently two parts vertically, the magnetic pole polar arc center line of part rotor core is with respect to the magnetic pole polar arc center line of another part rotor core angle (being the wrong utmost point) that staggers on circumference, and this angle equals the half of two adjacent stator slot angles.The stator core of corresponding this wrong utmost point rotor core is a straight trough stator core being formed by multi-disc stator lamination stacking.
Two part axial dimensions that form described rotor core are the same, and two parts of rotor core are axially being close together.The stator core that described and wrong utmost point rotor core coordinates is the stator core of complete a, straight trough, is not divided into two parts.
Compared with prior art, the cooperation of rotor core of the present utility model and stator core and the beneficial effect with the motor of this structure are: the wrong utmost point of this straight trough coordinates, to slacken slot ripples harmonic wave electromotive force, weaken the additional torque that harmony wave causes simultaneously, reduce electric and magnetic oscillation and the noise of motor, improve the new way of electric efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of rotor core of the present utility model:
Fig. 2 is the structural representation that forms the rotor punching of rotor core of the present utility model;
Description of reference numerals
1-rotor core 2-rotor punching
3-permanent magnet trough 4-axial location hole
5-bolt
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as to restriction of the present utility model.
As depicted in figs. 1 and 2, the rotor core 1 of embodiment of the present utility model, for being assembled together with straight trough stator core, on described stator core, offer stator slot (not shown), rotor core 1 comprises multi-disc rotor punching 2, as shown in Figure 2, on rotor punching 2, be evenly equipped with the permanent magnet trough 3 for accommodating permanent magnet, permanent magnet trough 3 alignment of part rotor punching 2 overlaps together and forms the first half rotor core (not shown)s, permanent magnet trough 3 alignment of another part rotor punching 2 overlaps together and forms the second half rotor core (not shown)s, the permanent magnet trough of described the first half rotor cores and the second half rotor cores γ angle that staggers overlaps together and forms rotor core 1, γ equals the angle between the center line of 1/2nd adjacent stator slots.
The rotor punching number that forms the first half rotor cores is identical with the rotor punching number that forms the second half rotor cores.
For described the first half rotor cores of the certain angle that makes to stagger and the second half rotor cores laminate and are fixed together easily, as shown in Figure 2, between two adjacent permanent magnet trough 3 of rotor punching 2, be provided with axial location hole 4, axial location hole 4 is uniformly distributed on rotor punching 2, between the center line of the permanent magnet trough 3 that the line at the center of the center in axial location hole 4 and rotor punching 2 is adjacent, form the first angle α, between the center line of another permanent magnet trough 3 that the line at the center of the center in axial location hole 4 and rotor punching 2 is adjacent, form the second angle β, the difference of the first angle α and the second angle β equals the half of the number of degrees of the angle between the center line of two adjacent stator slots of described stator core, the axial location hole 4 of described the first half rotor cores that overlap together and the second half rotor cores one by one corresponding and with bolt 5(as shown in Figure 1) fixing.
Continue in conjunction with Fig. 2, in the present embodiment, illustrate take a concrete example: the number of degrees of the angle between the center line of two of stator core adjacent stator slots are 3.636 degree, and the number of degrees of the first angle α are 15.909 degree, the number of degrees of the second angle β are 14.091 degree, the first angle α and the second angle β differ 1.818 degree, at described the first half rotor cores and the second half when rotor iron core laminated, and the permanent magnet trough 3 of two parts rotor core 1.818 degree that also stagger.As shown in Figure 1, because the first half rotor cores are blocked by the second half rotor cores, therefore, from Fig. 1, can see all permanent magnet trough 3 on all the second half rotor cores, in order to represent the wrong level relation between the permanent magnet trough 3 on permanent magnet trough 3 on the first half rotor cores and the second half rotor cores, in Fig. 1, be shown in broken lines the permanent magnet trough 3 of the first half rotor core, the γ of the angle that two permanent magnet trough stagger is 1.818 degree, and namely the angle between the center line of two permanent magnet trough is 1.818 degree.
In the actual course of processing, first a slice rotor punching 2 is arranged according to the mode in Fig. 2, wherein there are two axial location holes 4 to be positioned on same horizontal line m, then piecemeal multi-disc rotor punching 2 is laminated successively to (can be defined as just just folded facing to arranging), the permanent magnet trough 3 of multi-disc rotor punching 2 is now oppositely arranged, do not misplace each other (be error-free level), just folded multi-disc rotor punching 2 forms described the first half rotor cores.Then rotor punching 2 is turned over, more piecemeal being laminated on described the first half rotor cores, the multi-disc rotor punching 2 that overlaps together of turning over forms described the second half rotor cores, can claim that the second half rotor cores are replicate.The axial location hole 4 of the rotor punching 2 of positive superimposition replicate is still relative one by one, can tighten together by bolt 5 connectors such as grade shown in Fig. 1, thereby form rotor core 1 of the present utility model.
The stator core that described and wrong utmost point rotor core coordinates is the stator core of complete a, straight trough, is not divided into two parts.
Above embodiment is only exemplary embodiment of the present utility model, is not used in restriction the utility model, and protection range of the present utility model is defined by the claims.
Claims (4)
1. a rotor core, it is characterized in that, described rotor core is formed by multi-disc rotor punching closed assembly, and rotor core is uniformly distributed placement permanent magnet, be staggered by N-S polarity, permanent magnet Surface Mount is on rotor core surface or be embedded in rotor core inside; Whole rotor core is divided into independently two parts vertically, the magnetic pole polar arc center line of part rotor core is with respect to the magnetic pole polar arc center line of another part rotor core angle that staggers on circumference, be the wrong utmost point, this angle equals the half of two adjacent stator slot angles; The stator core coordinating with this wrong utmost point rotor core is a straight trough stator core being formed by multi-disc stator lamination stacking.
2. rotor core according to claim 1, is characterized in that: it is the same that described rotor core is divided into independently two its axial dimensions of part vertically.
3. rotor core according to claim 1, is characterized in that: described rotor core is divided into independently two parts vertically, and two parts are close together.
4. a stator core, is characterized in that: described stator core be with claims 1 to 3 in of coordinating of rotor core described in any one complete, the stator core of straight trough, described stator core is not divided into two parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604288.4U CN203691089U (en) | 2013-09-27 | 2013-09-27 | Rotor core and stator core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604288.4U CN203691089U (en) | 2013-09-27 | 2013-09-27 | Rotor core and stator core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203691089U true CN203691089U (en) | 2014-07-02 |
Family
ID=51012952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320604288.4U Expired - Fee Related CN203691089U (en) | 2013-09-27 | 2013-09-27 | Rotor core and stator core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203691089U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518586A (en) * | 2013-09-27 | 2015-04-15 | 北京明诚技术开发有限公司 | Straight slot pole staggered structure for large-scale PMSM |
| CN107659012A (en) * | 2017-10-25 | 2018-02-02 | 常州威灵电机制造有限公司 | Rotor punching, rotor and motor |
| CN108364744A (en) * | 2018-03-21 | 2018-08-03 | 福安市启航自动化科技有限公司 | A kind of laminated core structure and its fastening method |
| CN111740518A (en) * | 2020-07-08 | 2020-10-02 | 江西江特电机有限公司 | Wind power motor rotor and wind power become oar with permanent-magnet machine |
-
2013
- 2013-09-27 CN CN201320604288.4U patent/CN203691089U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518586A (en) * | 2013-09-27 | 2015-04-15 | 北京明诚技术开发有限公司 | Straight slot pole staggered structure for large-scale PMSM |
| CN104518586B (en) * | 2013-09-27 | 2018-01-09 | 北京明诚技术开发有限公司 | Suitable for the straight trough mistake pole structure of large-scale permagnetic synchronous motor |
| CN107659012A (en) * | 2017-10-25 | 2018-02-02 | 常州威灵电机制造有限公司 | Rotor punching, rotor and motor |
| CN108364744A (en) * | 2018-03-21 | 2018-08-03 | 福安市启航自动化科技有限公司 | A kind of laminated core structure and its fastening method |
| CN111740518A (en) * | 2020-07-08 | 2020-10-02 | 江西江特电机有限公司 | Wind power motor rotor and wind power become oar with permanent-magnet machine |
| CN111740518B (en) * | 2020-07-08 | 2022-08-23 | 江西江特电机有限公司 | Wind power motor rotor and wind power become oar with permanent-magnet machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20200927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |