CN203674833U - Permanent magnetic motor rotor - Google Patents
Permanent magnetic motor rotor Download PDFInfo
- Publication number
- CN203674833U CN203674833U CN201420029424.6U CN201420029424U CN203674833U CN 203674833 U CN203674833 U CN 203674833U CN 201420029424 U CN201420029424 U CN 201420029424U CN 203674833 U CN203674833 U CN 203674833U
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- permanent magnet
- rotor core
- arc length
- face
- groove shape
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Abstract
The utility model belongs to the technical field of a permanent magnetic motor, and particularly relates to a permanent magnetic motor rotor. The permanent magnetic motor rotor comprises a rotor core. The outer surface of the rotor core is pasted with surface-mount type permanent magnets; the surface-mount type permanent magnets are lunette permanent magnets; the arc at one end of each surface-mount type permanent magnet is greater than the arc length of the other end of each surface-mount type permanent magnet; there are four surface-mount type permanent magnets; and the surface-mount type permanent magnets are reversely arranged along the axial direction of the rotor core at equal intervals, such that the mechanical strength of a permanent magnetic motor is improved, the gullet forces and the torque ripples are greatly reduced, the sine characteristic of electromagnetic torque is optimized, accurate control is facilitated, and the starting, braking and operating performance of the permanent magnetic motor is improved.
Description
Technical field
The utility model belongs to magneto technical field, particularly a kind of permanent magnet machine rotor.
Background technology
Magneto is mainly divided into mounted, the built-in two kinds of structures of face.The permanent magnet of the mounted magneto of face is tile shape conventionally, is positioned on the outer surface of rotor core, is characterized in that straight, quadrature axis inductance equates.In the permanent magnet of internal permanent magnet synchronous motor, insert in internal rotor, the pole shoe that has ferromagnetic material to make between permanent magnet outer surface and rotor core inner circle, for the protection of permanent magnet, the important feature of the type magneto be straight, quadrature axis inductance is unequal.The mounted permagnetic synchronous motor of tile shape face is for internal permanent magnet synchronous motor, and its weak-magnetic speed-regulating range is little, and power density is low, but it is fast to have dynamic response, and the feature that torque pulsation is little, is suitable for servo-drive.The internal permanent magnet synchronous motor reluctance torque that superposeed on the basis of permanent-magnet torque, having of reluctance torque benefits the overload capacity and the power density that improve motor, and be easy to weak-magnetic speed-regulating, but torque pulsation is large, leakage field protrudes, need design every magnetic bridge, based on this, the utility model adopts and is the mounted permanent magnet of face of stairstepping distribution and mixes by the interior permanent magnets of approximate W shape the new structure forming, effectively optimize the sinuso sine protractor of air-gap field, teeth groove power and torque pulsation are reduced greatly, produce level and smooth electromagnetic torque, make motor be more suitable for accurate control.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art and a kind of permanent magnet machine rotor is provided, strengthen the mechanical strength of magneto, reduced teeth groove power and torque ripple greatly, optimized the sinuso sine protractor of electromagnetic torque, be easy to accurate control, improve starting, braking and the runnability of magneto.
The utility model object is achieved in that
A kind of permanent magnet machine rotor, comprise rotor core, the outer surface of described rotor core is pasted with the mounted permanent magnet of face, the mounted permanent magnet of described face is cabochon permanent magnet, the arc length of the mounted permanent magnet of described face one end is greater than the arc length of the other end, the number of the described mounted permanent magnet of face is four, and the mounted permanent magnet of described face is along the axially equidistant reversed arrangement of rotor core;
Based on the above, described rotor core offers the groove shape body that runs through rotor core both ends of the surface along its axis circumference, this groove shape body is made up of two skewed slots and the arcuate recess that run through rotor core both ends of the surface, described arcuate recess is a cabochon structure grooves, the arc length of one end of described arcuate recess is greater than the arc length of the other end, two described skewed slot symmetries be arranged in arcuate recess both sides, described groove shape body is four, four described equidistant directions of groove shape body are arranged in rotor core axis circumference, and described groove shape body is fitted with permanent magnet;
Based on the above, one end one end corresponding layout shorter with groove shape body arc length that the arc length of the described mounted permanent magnet of face is shorter, the corresponding layout in one end that one end that the arc length of the described mounted permanent magnet of face is grown is grown with groove shape body arc length.
Based on the above, the two sides of the mounted permanent magnet of face of described cabochon are step structure.
Based on the above, the cross section of two described skewed slots is rectangle.
Based on the above, described two skewed slots and arcuate recess are connectivity structure.
The utlity model has following advantage:
This rotor is to be vertically the stairstepping that near sinusoidal distributes by mounted face Design of Permanent Magnet, the mounted permanent magnet reversed arrangement of adjacent surface, interlock and equidistantly arrange along motor circumferencial direction successively, interior permanent magnets forms approximate W shape by two oblique cubes of rectangular surfaces and an oblique cube of arch, adjacent also reversed arrangement of W shape permanent magnet, interlock and equidistantly arrange along motor circumferencial direction successively, and face is pasted with built-in permanent magnet and united two into one, strengthen the mechanical strength of magneto, teeth groove power and torque ripple are reduced greatly, optimize the sinuso sine protractor of electromagnetic torque, be easy to accurate control, improve the starting of magneto, braking and runnability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the overall structure schematic diagram of magneto.
Fig. 3 is the enlarged drawing of A part.
Fig. 4 is the enlarged drawing of B part.
Embodiment
Below in conjunction with specific embodiment, the utility model will be further described.
As shown in Fig. 1,3,4, a kind of permanent magnet machine rotor, comprise rotor core 1, it is characterized in that: the outer surface of described rotor core 1 is pasted with the mounted permanent magnet 2 of face, the mounted permanent magnet 2 of described face is cabochon permanent magnet, the arc length of the mounted permanent magnet of described face 2 one end is greater than the arc length of the other end, the number of the mounted permanent magnet 2 of described face is four, the mounted permanent magnet 2 of described face is along the axially equidistant reversed arrangement of rotor core 1, width is 2mm-15mm, thickness is 2mm-12mm, and the pole embrace equal difference of each permanent magnet distributes, and tolerance is 0.05-0.3;
Described rotor core 1 offers the groove shape body 5 that runs through rotor core 1 both ends of the surface along its axis circumference, this groove shape body is made up of two skewed slots 3 and the arcuate recess 4 that run through rotor core 1 both ends of the surface, described arcuate recess 4 is a cabochon structure grooves, the arc length of one end of described arcuate recess 4 is greater than the arc length of the other end, two described skewed slot 3 symmetries be arranged in arcuate recess 4 both sides, described groove shape body 5 is four, the described equidistant direction of four groove shape bodies 5 is arranged in rotor core 1 axis circumference, described groove shape body 5 is fitted with permanent magnet 6, angle between two described skewed slots 3 is adjusted between 30-160 degree, the oblique cube permanent magnet of described rectangular surfaces thickness is identical, thickness is 2mm-12mm, the oblique permanent magnet thickness of described arch is also identical, thickness is 2mm-12mm.
The shorter one end one end corresponding layout shorter with groove shape body 5 arc length of arc length of the mounted permanent magnet 2 of described face, the corresponding layout in one end that one end that the arc length of the mounted permanent magnet 2 of described face is grown is grown with groove shape body 5 arc length.
Based on the above, the two sides of the mounted permanent magnet 2 of the face of described cabochon are step structure.
Based on the above, the cross section of two described skewed slots 3 is rectangle.
Based on the above, described two skewed slots 3 are connectivity structure with arcuate recess 4.
Described rotor structure for permanent magnet motor can be thought to form by being the mounted permanent magnet of face of stairstepping distribution and being got up to develop by the interior permanent magnets structure composition of approximate W shape.The mounted permanent magnet 2 of described face produces the Distribution of Magnetic Field of sinusoidal shape in motor gas-gap, and the mounted permanent magnet 2 of described face is different with the polarity of permanent magnet 6 opposite faces simultaneously, forms cascaded structure on magnetic circuit.
As shown in Figure 2, described novel permanent magnet motor rotor coordinates stator winding 7 and stator core 8 and rotating shaft 9 just can form a magneto.
The mounted permanent magnet of its face of the mounted permagnetic synchronous motor of face of prior art is tile conventionally, the magnetic field producing in air gap is generally square wave, but not level and smooth sine wave, harmonic content is larger, the counter potential waveform producing in winding is like this also square wave, increased cogging torque, caused electromagnetic torque pulsation to increase thereupon, this high-performance, wide range speed control that will reach with Modern PM Electrical Machines, the target that is easy to Accurate Position Control do not conform to.Adopt scheme provided by the utility model, the shape of the mounted permanent magnet of face is designed to the stepped of polylith arc-shaped permanent magnet composition, make its entirety approach half-sinusoid shape, so that permanent magnet along the circumferential direction produces sinusoidal flux waveforms in air gap, in stator winding, generate sinusoidal back-emf, thereby reduce greatly teeth groove power and electromagnetic torque pulsation, made motor be easy to accurately locate speed governing, moved more level and smooth.But, this has also reduced the amplitude of air-gap flux to a certain extent, based on this, the utility model has designed by paste the oblique cube permanent magnetism of V-type of permanent magnet two hypotenuse directions generations and the interior permanent magnets of the approximate W shape that arch permanent magnet forms jointly along trapezoidal faces, built-in W shape permanent magnet and the mounted permanent magnet of face cooperatively interact, the polarity on its relative inclined-plane is contrary, on magnetic circuit, form cascaded structure, make magnetic field more concentrated, poly-magnetic effect is more outstanding, has made up the shortcoming that the mounted permanent magnet air-gap flux of new profile of design reduces.Adopt the comprehensive function of above behave, the electromagnetic torque flatness of motor will significantly improve.Simultaneously, according to the different requirements of the performance such as Air-gap Flux Density in Permanent Magnet Machines, torque characteristics and efficiency, can change the arc piece number of the mounted permanent magnet of composition face, width and thickness with and pole embrace, change the opening angle of rotor core V-shaped groove, and the measure such as radian, thickness of the thickness of built-in oblique cube permanent magnet and askew arch shape permanent magnet, jointly improve motor overall performance.
Claims (4)
1. a permanent magnet machine rotor, comprise rotor core (1), it is characterized in that: the outer surface of described rotor core (1) is pasted with the mounted permanent magnet of face (2), the mounted permanent magnet of described face (2) is cabochon permanent magnet, the arc length of the mounted permanent magnet of described face (2) one end is greater than the arc length of the other end, the number of the mounted permanent magnet of described face (2) is four, and the mounted permanent magnet of described face (2) is along the axially equidistant reversed arrangement of rotor core (1);
Described rotor core (1) offers the groove shape body (5) that runs through rotor core (1) both ends of the surface along its axis circumference, this groove shape body is made up of two skewed slots (3) and the arcuate recess (4) that run through rotor core (1) both ends of the surface, described arcuate recess (4) is a cabochon structure grooves, the arc length of one end of described arcuate recess (4) is greater than the arc length of the other end, what described two skewed slots (3) were symmetrical is arranged in arcuate recess (4) both sides, described groove shape body (5) is four, the equidistant direction of described four groove shape bodies (5) is arranged in rotor core (1) axis circumference, described groove shape body (5) is fitted with permanent magnet (6),
The shorter one end one end corresponding layout shorter with groove shape body (5) arc length of arc length of the mounted permanent magnet of described face (2), the corresponding layout in one end that one end that the arc length of the mounted permanent magnet of described face (2) is grown is grown with groove shape body (5) arc length.
2. permanent magnet machine rotor according to claim 1, is characterized in that: the two sides of the mounted permanent magnet of face (2) of described cabochon are step structure.
3. permanent magnet machine rotor according to claim 1, is characterized in that: the cross section of described two skewed slots (3) is rectangle.
4. permanent magnet machine rotor according to claim 1, is characterized in that: described two skewed slots (3) are connectivity structure with arcuate recess (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420029424.6U CN203674833U (en) | 2014-01-17 | 2014-01-17 | Permanent magnetic motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420029424.6U CN203674833U (en) | 2014-01-17 | 2014-01-17 | Permanent magnetic motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203674833U true CN203674833U (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420029424.6U Expired - Fee Related CN203674833U (en) | 2014-01-17 | 2014-01-17 | Permanent magnetic motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203674833U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105765833A (en) * | 2014-10-20 | 2016-07-13 | 株式会社大信产业开发 | Motor generator for simultaneous driving and electric charging |
| CN107883851A (en) * | 2017-12-31 | 2018-04-06 | 横店集团英洛华电气有限公司 | Chute rotor iron core sorter |
| CN109434141A (en) * | 2018-11-29 | 2019-03-08 | 深圳市爱贝科精密机械有限公司 | A kind of rotor assembly and permanent magnet synchronization motor spindle of electro spindle |
| CN110022013A (en) * | 2019-05-29 | 2019-07-16 | 山东大学 | A kind of poles oblique and the asymmetric rotor of salient pole and high-performance permanent magnet motor |
| CN113381543A (en) * | 2021-07-14 | 2021-09-10 | 横店集团东磁股份有限公司 | Permanent magnet motor rotor, permanent magnet motor and processing method of permanent magnet motor rotor |
-
2014
- 2014-01-17 CN CN201420029424.6U patent/CN203674833U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105765833A (en) * | 2014-10-20 | 2016-07-13 | 株式会社大信产业开发 | Motor generator for simultaneous driving and electric charging |
| CN107883851A (en) * | 2017-12-31 | 2018-04-06 | 横店集团英洛华电气有限公司 | Chute rotor iron core sorter |
| CN107883851B (en) * | 2017-12-31 | 2024-04-19 | 浙江联宜电机有限公司 | Chute rotor core sorter |
| CN109434141A (en) * | 2018-11-29 | 2019-03-08 | 深圳市爱贝科精密机械有限公司 | A kind of rotor assembly and permanent magnet synchronization motor spindle of electro spindle |
| CN109434141B (en) * | 2018-11-29 | 2023-12-22 | 深圳市爱贝科精密工业股份有限公司 | Rotor assembly of electric spindle and permanent magnet synchronous electric spindle |
| CN110022013A (en) * | 2019-05-29 | 2019-07-16 | 山东大学 | A kind of poles oblique and the asymmetric rotor of salient pole and high-performance permanent magnet motor |
| CN113381543A (en) * | 2021-07-14 | 2021-09-10 | 横店集团东磁股份有限公司 | Permanent magnet motor rotor, permanent magnet motor and processing method of permanent magnet motor rotor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20190117 |