CN204408032U - A kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto - Google Patents
A kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto Download PDFInfo
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- CN204408032U CN204408032U CN201520088524.0U CN201520088524U CN204408032U CN 204408032 U CN204408032 U CN 204408032U CN 201520088524 U CN201520088524 U CN 201520088524U CN 204408032 U CN204408032 U CN 204408032U
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Abstract
The monodentate gear shaping stator structure of a kind of low speed proximal pole of the utility model groove magneto, belong to technical field of motors, there is grain-oriented Si steel sheet rolling direction to overlap with motor stator radial direction, making stator magnet line of force direction consistent with there being the rolling direction of grain-oriented Si steel sheet (high magnetic property direction); Utilize and have the feature that grain-oriented Si steel sheet rolling direction magnetic property is good, operate in saturation point can be improved, the magnetomotive force that stator current is produced increases, thus improves stator teeth magnetic flux density and air gap flux density, reaches the object of the torque density under raising motor unit volume; Have employed the structure of the shaping concentratred winding of monodentate, effectively improve copper factor, increase torque density further; There is grain-oriented Si steel sheet low perpendicular to rolling direction permeability simultaneously, inhibit again the zigzag leakage of motor better, thus reduce the torque pulsation of motor.
Description
Technical field
The utility model belongs to technical field of motors, is specifically related to a kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto.
Background technology
Under low speed proximal pole groove permanent magnet torque motor refers to and operates in and often run lower-speed state, number of poles and the comparatively close torque motor of groove number.This kind of motor has the outstanding advantages such as structure is simple, efficiency is high, power density is high, winding overhang is short, torque pulsation is low, is widely used in Direct driver fields such as industrial equipment automatic machinery people, multi-shaft linkage numerical control machines.Because the need for environment motor applied runs under lower-speed state, so need during design of electrical motor to increase number of poles, proximal pole groove permanent magnet torque motor adopts the form of fractional slot winding distribution, and efficiently solving number of poles in conventional integer groove design of electrical motor increases but the limited contradiction of groove number.At present, the research of proximal pole groove permanent magnet torque motor mainly concentrates on the Torque optimization of motor, wish that motor can export higher torque under limited volume, in other words, make it have higher torque density, wish that again motor can have lower torque ripple, to ensure driven object traveling comfort.But traditional this motor adopts non-oriented silicon steel sheet to make usually, from the permeance angle of material self, limit the further lifting of its torque performance.
Summary of the invention
For the bottleneck problem of existing technology, the utility model proposes a kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto, improve stator teeth magnetic flux density and air gap flux density to reach, suppress the zigzag leakage of motor, reduce the object of motor torque ripple.
A kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto, this stator structure comprises multiplely has grain-oriented Si steel sheet monodentate structure and yoke portion structure, described yoke portion vibrational power flow is on support, and yoke portion vibrational power flow has multiple groove, and above-mentioned groove inner wall side is provided with projection; Described monodentate structure is along the circumferential direction arranged, side, monodentate structure bottom arrange jut have with yoke portion texture grooves inner projection with the use of groove, monodentate structure is fixedly connected with yoke portion structure.
The rolling direction of described monodentate structure is stator structure radial direction.
Described monodentate structure is provided with armature winding.
Described monodentate structure is in axial direction laminated by monodentate punching and is formed.
Described yoke portion texture grooves number is identical with monodentate structure.
The utility model advantage:
The monodentate gear shaping stator structure of a kind of low speed proximal pole of the utility model groove magneto, there is grain-oriented Si steel sheet rolling direction to overlap with motor stator radial direction, making stator magnet line of force direction consistent with there being the rolling direction of grain-oriented Si steel sheet (high magnetic property direction); Utilize and have the feature that grain-oriented Si steel sheet rolling direction magnetic property is good, operate in saturation point can be improved, the magnetomotive force that stator current is produced increases, thus improves stator teeth magnetic flux density and air gap flux density, reaches the object of the torque density under raising motor unit volume; Have employed the structure of the shaping concentratred winding of monodentate, effectively improve copper factor, increase torque density further; There is grain-oriented Si steel sheet low perpendicular to rolling direction permeability simultaneously, inhibit again the zigzag leakage of motor better, thus reduce the torque pulsation of motor.
Accompanying drawing explanation
Fig. 1 is the external rotor proximal pole groove permanent magnetic ring-shaped moment motor structural representation of a kind of embodiment of the utility model;
Fig. 2 is the monodentate gear shaping structural representation of a kind of embodiment of the utility model, and wherein, figure (a) is stator structure, and figure (b) is yoke portion structure; Figure (c) is monodentate structure;
Fig. 3 is orientation and the non-oriented silicon steel sheet motor torque oscillogram of a kind of embodiment of the utility model;
Fig. 4 is two kinds of silicon steel sheet motor torque fluctuation Fourier decomposition schematic diagrames of a kind of embodiment of the utility model, wherein, figure (a), for there being grain-oriented Si steel sheet motor torque fluctuation Fourier decomposition schematic diagram, schemes (b) non-oriented silicon steel sheet motor torque fluctuation Fourier decomposition schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, a kind of embodiment of the utility model is described further.
As shown in Figure 1, be external rotor proximal pole groove permanent magnetic ring-shaped moment motor structural representation; The utility model adopts proximal pole groove permanent magnet torque motor, number of poles and the groove number of this motor are close, MgO-ZrO_2 brick approximates 1, main flux is from a magnetic pole, the stator tooth closed on is entered by air gap, then walk around stator winding through stator yoke, then get back to two incorgruous magnetic poles magnetized adjacent with former magnetic pole by the tooth that both sides are adjacent; Therefore, comparatively conventional integer groove motor is compared, and this motor magnetic circuit is based on teeth portion radial magnetic circuit, and the close high magnetic circuit of magnetic is long, and the tangential magnetic circuit in yoke portion is short and magnetic is close low.And if according to the saturated thickness designing yoke portion of yoke portion magnetic close knee point, then the mechanical strength in yoke portion is inadequate, therefore also needs to strengthen yoke portion thickness; Known through simulation calculation, the yoke portion magnetic flux density of this motor can only reach 1/3rd of the close maximum of tooth magnetic, and this characteristic is have the application of grain-oriented Si steel sheet to provide condition.
The characteristic of grain-oriented Si steel sheet is had to be, there is grain-oriented Si steel sheet rolling direction magnetic Mi Keda 2.0T, vertical rolling direction magnetic secret agreement is 1.4T, and non-directional cold-rolling silicon steel disc magnetic close be 1.6T, consider that the saturation characteristic of silicon steel sheet is known, under high magnetic flux density, carry high-magnetodensity and need increase exponentially magnetic field intensity, therefore, in the motor that non-oriented silicon steel sheet manufactures, torque density can not be increased by the method increasing electric current merely.
Based on above feature, the utility model proposes employing has grain-oriented Si steel sheet to make proximal pole groove permanent-magnetic synchronous motor stator iron core; As shown in Figure 2, wherein, 1 is rotor yoke to monodentate splicing structure schematic diagram, and 2 is rotor magnetic pole, and 3 for there being grain-oriented Si steel sheet monodentate structure, and 4 is stator armature winding, and 5 is yoke portion structure;
In the utility model embodiment, monodentate structure adopts burst moulding process equally, and have grain-oriented Si steel sheet to be rapidoprint, rolling direction is radial direction; As schemed shown in (a) in Fig. 2, stator structure comprises multiplely has grain-oriented Si steel sheet monodentate structure 3 and yoke portion structure 5, described yoke portion structure 5 is arranged at outside support, as schemed shown in (b) in Fig. 2, yoke portion vibrational power flow has multiple groove, and above-mentioned groove inner wall side is provided with projection; As schemed shown in (c) in Fig. 2, side, monodentate structure bottom be provided with yoke portion texture grooves inner projection with the use of groove, monodentate structure is fixedly connected with yoke portion structure; Described yoke portion texture grooves number is identical with monodentate structure.
In the utility model embodiment, yoke portion structure selects 10 steel, and during frock, stator armature winding 4 has first been wrapped in grain-oriented Si steel sheet monodentate structure 3, then inserts yoke portion structure 5.
For 96 groove 80 pole motors, analyze the difference having grain-oriented Si steel sheet and traditional non-oriented silicon steel sheet to show in motor torque performance; Motor all adopts outer-rotor structure, and rotor inner headed face installs surface-mount type permanent magnet pole.Pole material is neodymium iron boron; Stator has adopted grain-oriented Si steel sheet and non-orientation silicon steel sheet material respectively, but size is consistent, and input sine wave current effective value is 13A.
In the utility model embodiment, the concrete size of motor is in table 1:
Table 1
The utility model adopts ANSOFT to carry out simulation calculation, and two kinds of steel disc material motor torque performance comparison are as shown in table 2:
Table 2
According to FEM Numerical Simulation, as seen from Figure 3, employing has the torque motor of grain-oriented Si steel sheet to show higher average torque, under same nominal power, the average torque of two kinds of motors is respectively 917Nm and 1018Nm, has grain-oriented Si steel sheet motor torque to promote and reaches 11.01%.Through calculating, the motor magnetic flux density working point of tradition non-orientation silicon steel sheet material is 1.6T, when there being grain-oriented Si steel sheet motor magnetic magnetic flux density working point to be taken as 1.8T, exceeds 12.5%, from result of calculation, the enhancing of motor-field increases the average torque of motor linearly.In addition, the torque pulsation of grain-oriented Si steel sheet motor is had also to be starkly lower than non-oriented silicon steel sheet.
The utility model carries out Fourier decomposition to the motor electromagnetic torque run under idle condition.Proximal pole groove motor torque ripple is mainly containing 6 times and 12 subharmonic, and research shows, zigzag leakage is again the main source of 6 times and the generation of 12 subharmonic, as schemed, shown in (a) and figure (b), have oriented material obvious to these two kinds of times harmonic inhibitory action in Fig. 4.
The Be very effective being applied in the zigzag leakage aspect reducing proximal pole groove permanent magnet torque motor of oriented electromagnetic steel plate can be verified.This improvement of will directly react on the electromagnetic torque fluctuation of motor.
In sum, adopt and have grain-oriented Si steel sheet as stator material, improve the magnetic flux density of unit volume, the average Driving Torque of motor can be improved; Meanwhile, because steel disc is lower perpendicular to rolling direction permeability, inhibit zigzag leakage, can torque pulsation be reduced.
Claims (5)
1. the monodentate gear shaping stator structure of a low speed proximal pole groove magneto, it is characterized in that, this stator structure comprises multiplely has grain-oriented Si steel sheet monodentate structure and yoke portion structure, described yoke portion vibrational power flow is on support, yoke portion vibrational power flow has multiple groove, and above-mentioned groove inner wall side is provided with projection; Described monodentate structure is along the circumferential direction arranged, side, monodentate structure bottom arrange jut have with yoke portion texture grooves inner projection with the use of groove, monodentate structure is fixedly connected with yoke portion structure.
2. the monodentate gear shaping stator structure of low speed proximal pole groove magneto according to claim 1, is characterized in that, the rolling direction of described monodentate structure is stator structure radial direction.
3. the monodentate gear shaping stator structure of low speed proximal pole groove magneto according to claim 1, is characterized in that, described monodentate structure is provided with armature winding.
4. the monodentate gear shaping stator structure of low speed proximal pole groove magneto according to claim 1, it is characterized in that, described monodentate structure is in axial direction laminated by monodentate punching and is formed.
5. the monodentate gear shaping stator structure of low speed proximal pole groove magneto according to claim 1, is characterized in that, described yoke portion texture grooves number is identical with monodentate structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088524.0U CN204408032U (en) | 2015-02-06 | 2015-02-06 | A kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520088524.0U CN204408032U (en) | 2015-02-06 | 2015-02-06 | A kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204408032U true CN204408032U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520088524.0U Expired - Fee Related CN204408032U (en) | 2015-02-06 | 2015-02-06 | A kind of monodentate gear shaping stator structure of low speed proximal pole groove magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204408032U (en) |
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2015
- 2015-02-06 CN CN201520088524.0U patent/CN204408032U/en not_active Expired - Fee Related
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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: 20150617 Termination date: 20180206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |