CN107425629A - A kind of permanent magnet machine rotor - Google Patents
A kind of permanent magnet machine rotor Download PDFInfo
- Publication number
- CN107425629A CN107425629A CN201710388022.3A CN201710388022A CN107425629A CN 107425629 A CN107425629 A CN 107425629A CN 201710388022 A CN201710388022 A CN 201710388022A CN 107425629 A CN107425629 A CN 107425629A
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- China
- Prior art keywords
- permanent magnet
- tile type
- rotor
- machine rotor
- pole
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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
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2746—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets arranged with the same polarity, e.g. consequent pole type
-
- 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
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- 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)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a kind of permanent magnet machine rotor, including Consequent pole permanent magnet motor rotor core, two Conventional permanent magnet electric machine rotor iron cores and tile type permanent magnet.The axial length of one of Conventional permanent magnet electric machine rotor iron core is 0.1 0.3 times of whole rotor core axial length, and is coaxially located at Consequent pole permanent magnet motor rotor core both sides side by side.The outer or inner circumferential surface of Consequent pole permanent magnet motor rotor core is circumferentially uniformly laid with p salient pole, and permanent magnet trough two is formed between two neighboring salient pole；Wherein, p is motor number of pole-pairs；The outer or inner circumferential surface of Conventional permanent magnet electric machine rotor iron core is circumferentially uniformly laid with 2p permanent magnet trough one；Each permanent magnet trough one and each nested tile type permanent magnet in each permanent magnet trough two.The method that the present invention is combined using conventional surface formula permanent magnet machine rotor and alternating pole surface permanent magnetic rotor, while reducing the cost of motor and ensureing torque output capability, weakens leakage field and its magnetization of roller end.
Description
Technical field
The present invention relates to design of electrical motor field, particularly a kind of permanent magnet machine rotor.
Background technology
Magneto has high torque density and high efficiency, has been widely used for medicine equipment, household electrical appliance, electronic vapour
The fields such as car, wind-power electricity generation and Aero-Space.Different rotor structure for permanent magnet motor so that magnetic circuit is different, and this allows for motor
Performance, control system, manufacturing process and applicable situation are also different.Theoretical, the surface-type according to the coordinate transform of permagnetic synchronous motor
The d-axis magnetic circuit and quadrature axis magnetic circuit of magneto, as shown in Figure 1.D-axis magnetic circuit 12：Permanent magnet → air gap → stator core → gas
Gap → adjacent permanent magnet → rotor core → returns to permanent magnet.(stator core and air gap are not drawn in figure, but in industry
Both know about).Quadrature axis magnetic circuit 13：Two permanent magnets of boundary → air gap → stator core → air gap of two permanent magnets → adjacent
Boundary → rotor core → return to start two permanent magnets boundary.
It can be seen that the magnetic resistance of its d-axis magnetic circuit is equal with the magnetic resistance of quadrature axis magnetic circuit, so its d-axis inductance is equal to quadrature axis inductance.
The electromagnetic torque T of permagnetic synchronous motoreExpression formula, as shown in formula (a).
In formula (a), p be motor number of pole-pairs, ψpmFor permanent magnet flux linkage, LdAnd LqRespectively d-axis inductance and quadrature axis inductance, id
And iqThe respectively direct-axis current and quadrature axis current of armature winding.IaIt is the peak value of sinusoidal phase current, β is current phase angle.Tpm
And TrIt is permanent-magnet torque component and reluctance torque component respectively.
Because the d-axis inductance of surface permanent magnetic motor is equal to quadrature axis inductance, so its reluctance torque component is 0.Comprise only
The electromagnetic torque T of permanent-magnet torque component, i.e. surface permanent magnetic motoreExpression formula, can be by formula (b) Suo Shi.
The manufacturing process of surface permanent magnetic rotor is simple, reluctance torque component is not contained in its output torque, therefore control
Method processed is simple, is widely used in the servo drive occasion such as lathe, robot and medicine equipment.Traditional surface permanent magnetic motor
It is the main reason for its production cost is higher using the higher rare earth permanent-magnetic material of a large amount of prices.In order to reduce its cost, application
Number patent of invention for being 200710010915.0, there is provided a kind of surface permanent magnetic servo motor rotor, permanent magnet and " false pole "
It is alternately arranged, the quantity of permanent magnet is only the half of conventional surface formula magneto, saves permanent-magnet material, so as to reduce electricity
The totle drilling cost of machine.
However, the article delivered as IEEE magnetics proceedings：Comparative Analysis of End Effect in
Partitioned Stator Flux Reversal Machines Having Surface-Mounted and
Consequent Pole Permanent Magnets, pointed, the magneto of alternating pole structure, its brow leakage ratio
It is more serious.
In addition, alternately the roller end of pole surface permanent magnetic motor has unipolarity leakage field so that the roller end of motor
Magnetize, this will have an impact to the reliability of whole electric system and security.Patent of invention 201611011019.1 carries
Go out the method for using rotor segment, provide leakage path inside rotor and rotating shaft, weaken the magnetization of roller end.However,
There is axial leakage field in two-stage rotor intersection, its leakage path is as shown in figure 15：Permanent magnet → air gap of one section of rotor → adjacent
Another section of rotor on permanent magnet → rotor core → return to the permanent magnet of beginning.Although patent of invention
201611011019.1 can reduce the leakage field of roller end, avoid its magnetization, and still, the leakage field of two-stage rotor intersection can drop
Low torque fan-out capability, the utilization rate of permanent magnet are relatively low.
The content of the invention
In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a kind of magneto turns
Son, the permanent magnet machine rotor are combined using conventional surface formula permanent magnet machine rotor and alternately pole surface permanent magnetic rotor
Method, while reducing the cost of motor and ensureing torque output capability, weaken leakage field and its magnetization of roller end.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of permanent magnet machine rotor, including rotor core, rotating shaft and tile type permanent magnet, rotor core, which is co-axially located at, to be turned
On axle.
Rotor core includes Consequent pole permanent magnet motor rotor core and is disposed in parallel in Consequent pole permanent magnet motor rotor core
The Conventional permanent magnet electric machine rotor iron core of both sides.
The axial length of each Conventional permanent magnet electric machine rotor iron core is 0.1-0.3 times of whole rotor core axial length.
The excircle or inner circumferential surface of Consequent pole permanent magnet motor rotor core are circumferentially uniformly laid with p salient pole, phase
A permanent magnet trough two is formed between adjacent two salient poles；Wherein, p is motor number of pole-pairs.
The excircle or inner circumferential surface of Conventional permanent magnet electric machine rotor iron core are circumferentially uniformly laid with 2p permanent magnet trough
One.
Each permanent magnet trough one and each nested tile type permanent magnet in each permanent magnet trough two；Wherein, it is nested in forever
Tile type permanent magnet in magnet slot one is tile type permanent magnet one, and the tile type permanent magnet being nested in permanent magnet trough two is watt
Chip permanent magnet two.
The magnetizing direction of two neighboring tile type permanent magnet one is on the contrary, and a pair of magnetic poles of formation.
Magnet isolation tank is provided between tile type permanent magnet two and Adjacent salient poles；The side of magnetizing of all tile type permanent magnets two
To all same, tile type permanent magnet two forms a pair of magnetic poles with one of Adjacent salient poles.
The axial length degree of tile type permanent magnet two is less than or equal to the axial length of Consequent pole permanent magnet motor rotor core.
The axial length of each Conventional permanent magnet electric machine rotor iron core is 0.2-0.3 times of whole rotor core axial length.
Tile type permanent magnet one and tile type permanent magnet two use radial magnetizing or parallel magnetization.
The axial length of two Conventional permanent magnet electric machine rotor iron cores is equal.
After the present invention uses said structure, conventional surface formula permanent magnet machine rotor and alternating pole surface permanent magnetic motor are utilized
The method that rotor is combined, while reducing the cost of motor and ensureing torque output capability, weaken the leakage field of roller end
And its magnetization.In addition, this motor can electric operation, also can generator operation.Further, the present invention both can be used for internal rotor electricity
Machine, it can be used for external rotor electric machine.After as external rotor electric machine, torque output capability can be further improved.
Brief description of the drawings
Fig. 1 shows the structural representation of Conventional permanent magnet electric machine rotor iron core in embodiment 1.
Fig. 2 shows the structural representation of Consequent pole permanent magnet motor rotor core in embodiment 1.
Fig. 3 shows structural representation when a kind of permanent magnet machine rotor is without axial magnet isolation tank in embodiment 1.
Fig. 4 shows structural representation when a kind of permanent magnet machine rotor in embodiment 1 has axial magnet isolation tank.
Fig. 5 shows a kind of magnetic flux path schematic diagram of the brow leakage of permanent magnet machine rotor in embodiment 1.
Fig. 6 shows the structural representation of Conventional permanent magnet electric machine rotor iron core in embodiment 2.
Fig. 7 shows the structural representation of Consequent pole permanent magnet motor rotor core in embodiment 2.
Fig. 8 shows structural representation when a kind of permanent magnet machine rotor is without axial magnet isolation tank in embodiment 2.
Fig. 9 shows structural representation when a kind of permanent magnet machine rotor in embodiment 2 has axial magnet isolation tank.
Figure 10 shows that the electromagnetic torque of a kind of permanent magnet machine rotor and rotor in the prior art in embodiment 1 contrasts
Figure.
Figure 11 shows Δ T in embodiment 1avgWith klVariation relation figure.
Figure 12 shows Δ B in embodiment 1eWith klVariation relation figure.
Figure 13 shows Δ V in embodiment 1mWith klVariation relation figure.
Figure 14 shows the present invention (k in embodiment 1lWhen=0.3) and Consequent pole permanent magnet motor at roller end 40mm
The close comparison diagram of magnetic.
Figure 15 shows the leakage path schematic diagram of two-stage rotor intersection in background technology 201611011019.1.
Figure 16 shows the present invention in Conventional permanent magnet electric machine rotor iron core and Consequent pole permanent magnet motor rotor core intersection
Leakage field analysis chart.
Figure 17 shows the magnetic flux path schematic diagram of the present invention.
Wherein have：
1. Conventional permanent magnet electric machine rotor iron core；11. permanent magnet trough one；12. d-axis magnetic circuit；13. quadrature axis magnetic circuit；
2. Consequent pole permanent magnet motor rotor core；21. salient pole；22. permanent magnet trough two；23. magnet isolation tank；
3. rotating shaft；4. tile type permanent magnet；5. axial magnet isolation tank；6. leakage field magnetic flux path；7. axial leakage path；
8. the magnetic flux path of Consequent pole permanent magnet motor rotor.
Embodiment
The present invention is further detailed explanation with specific better embodiment below in conjunction with the accompanying drawings.
The permanent magnet machine rotor of embodiment 1 is internal rotor
As shown in Fig. 3, Fig. 4 and Fig. 5, a kind of permanent magnet machine rotor, including rotor core, rotating shaft 3 and tile type permanent magnet
4, rotor core is co-axially located in rotating shaft.
Rotor core include Consequent pole permanent magnet motor rotor core 1 and side by side and be co-axially located at Consequent pole permanent magnet motor turn
The Conventional permanent magnet electric machine rotor iron core 2 of son both sides unshakable in one's determination.
As shown in figure 1, the external peripheral surface of Conventional permanent magnet electric machine rotor iron core, is circumferentially uniformly laid with 2p permanent magnet
Groove 1.Wherein, p is motor number of pole-pairs.
The present invention is described in detail by taking 10 pole inner rotor motors as an example, namely p=5.
Each nested tile type permanent magnet 4 in each permanent magnet trough one；Wherein, the tile being nested in permanent magnet trough one
Formula permanent magnet is tile type permanent magnet one, that is, the external peripheral surface of Conventional permanent magnet electric machine rotor iron core is nested with 10 tiles
Formula permanent magnet one.
The magnetizing direction of two neighboring tile type permanent magnet one is on the contrary, and a pair of magnetic poles of formation.
The axial length of two Conventional permanent magnet electric machine rotor iron cores is preferably equal.
The pole embrace α of tile type permanent magnet one in Conventional permanent magnet electric machine rotor iron corep2=θmP/ π, wherein θmFor in Fig. 1
The central angle of tile type permanent magnet, αp2Span is 0.7-1.0.
As shown in Fig. 2 the external peripheral surface of Consequent pole permanent magnet motor rotor core is circumferentially uniformly laid with p salient pole
21, a permanent magnet trough 2 22 is formed between two neighboring salient pole.
Each nested tile type permanent magnet 4 in each permanent magnet trough two, it is nested in tile type in permanent magnet trough two forever
Magnet is assumed to be tile type permanent magnet two.
Magnet isolation tank 23, namely the center of circle of tile type permanent magnet two are provided between tile type permanent magnet two and Adjacent salient poles
Angle is less than or equal to the central angle of permanent magnet trough two.
The magnetizing direction all same of all tile type permanent magnets two, tile type permanent magnet two and one of Adjacent salient poles shape
Magnetic pole in a pair.
The pole embrace α of tile type permanent magnet two in Consequent pole permanent magnet motor rotorp1=θmP/ (2 π), wherein θmFor Fig. 2
The central angle of middle tile type permanent magnet two.αp1Span is 0.35-0.75.
The coefficient of the magnet isolation tank (being also circumferential magnet isolation tank) of tile type permanent magnet two in Consequent pole permanent magnet motor rotorWherein θbFor the central angle of circumferential magnet isolation tank.kcSpan is 0-0.2.
The axial length coefficient of tile type permanent magnet two and axial magnet isolation tank in Consequent pole permanent magnet motor rotorWherein LbFor the axial length of axial magnet isolation tank, LmFor the axial length of rotor core in Consequent pole permanent magnet motor.
Wherein, kaSpan is 0-0.1.
Further, the axial length degree of tile type permanent magnet two is less than or equal to the axle of Consequent pole permanent magnet motor rotor core
To length.
Further, above-mentioned tile type permanent magnet one and tile type permanent magnet two preferably using radial magnetizing or parallel fill
Magnetic, but the other known mode that magnetizes also is used, within protection scope of the present invention.
Further, as shown in figure 4, between Consequent pole permanent magnet motor rotor core and two Conventional permanent magnet electric machine rotor iron cores
It is provided with axial magnet isolation tank 5.
The axial length of each Conventional permanent magnet electric machine rotor iron core is 0.1-0.3 times of whole rotor core axial length,
More preferably 0.2-0.3 times.In the present invention, the axial length of two Conventional permanent magnet electric machine rotor iron cores is whole rotor
0.3 times of axial length unshakable in one's determination.
Assuming that the ratio of the axial length of Conventional permanent magnet electric machine rotor iron core and whole rotor core axial length is kl。
Below to average electromagnetic torque, roller end magnetic is close and permanent magnet dosage, establishes incrementation parameter respectively, as formula (1)-
Shown in formula (3).
In formula, Δ TavgFor average electromagnetic torque increment；ΔBeFor the close increment of roller end magnetic；ΔVmIncrease for permanent magnet volume
Amount；Tavg_0For the average motor torque of Consequent pole permanent magnet motor；Be_0It is close for the roller end magnetic of Consequent pole permanent magnet motor；Vm_0For
The permanent magnet volume of Conventional permanent magnet motor；Tavg_xFor the average motor torque of magneto of the present invention；Be_xFor Permanent Magnet and Electric of the present invention
The roller end magnetic of machine is close；Vm_xFor the permanent magnet volume of magneto of the present invention.
ΔTavg、ΔBeWith Δ VmWith klVariation relation, as shown in Figure 11, Figure 12 and Figure 13.With klBecome big, Δ Tavg
With Δ BeBecome larger, Δ VmTaper into.
As shown in Figure 10, k is worked aslWhen reaching 0.3, its torque output capability is not only suitable with Conventional permanent magnet motor, but also
20% permanent magnet can be saved.Therefore in the case where ensureing torque output capability, permanent magnet is saved as far as possible, and as far as possible
Weaken roller end leakage field；klPreferred scope is 0.2-0.3.
The structure design of above-mentioned permanent magnet machine rotor, increase unipolar leakage field magnetic flux path of Consequent pole permanent magnet motor
6 magnetic resistance, leaked as shown in figure 5, causing its most of leakage field that the unipolarity of roller end by roller end, will not be weakened
Magnetic.
According to " magnetic resistance minimum principle ", magnetic flux forms loop always by the less path of magnetic resistance.The alternating pole of the present invention
The magnetic flux path of permanent magnet on permanent magnet machine rotor：Permanent magnet → rotor core → air gap → stator core → air gap → returns to out
The permanent magnet of beginning.Because Conventional permanent magnet rotor is located at both sides, the axial leakage magnetic circuit of permanent magnet on Conventional permanent magnet rotor
Footpath 7：Permanent magnet → air gap → stator core → air gap → rotor core → returns to permanent magnet.However, due to alternating pole Permanent Magnet and Electric
The direction of magnetic flux path 8 of machine rotor and the axial leakage magnetic flux direction of permanent magnet on Conventional permanent magnet rotor, in alternately pole rotor
Salient pole is unshakable in one's determination upper on the contrary, as shown in figure 16.Moreover, the axial leakage magnetic flux of permanent magnet is much smaller than alternating on Conventional permanent magnet rotor
The magnetic flux of permanent magnet on pole permanent magnet motor rotor, so, this axial leakage magnetic flux can be by permanent magnetism on Consequent pole permanent magnet motor rotor
The magnetic flux of body forces the main flux path for returning to Conventional permanent magnet rotor, as shown in figure 17.Therefore, axial leakage field of the invention
Very little.
The present invention (klWhen=0.3) and the roller end 40mm of Consequent pole permanent magnet motor at magnetic it is close, as shown in figure 14, figure
In as can be seen that the present invention can effectively weaken the unipolarity leakage field of roller end.
The permanent magnet machine rotor of embodiment 2 is outer rotor
The structure and principle of embodiment 2 and embodiment 1 are essentially identical, and difference is as follows：
As shown in Fig. 6-Fig. 9, the week of inner circumferential surface of the 2p permanent magnet trough 1 along Conventional permanent magnet electric machine rotor iron core
Laid to uniform, each permanent magnet trough 1 is nested with a tile type permanent magnet one.
The circumferential of inner circumferential surface of the p salient pole 21 along Consequent pole permanent magnet motor rotor core is uniformly laid, two neighboring
A permanent magnet trough 2 22 is formed between salient pole, each permanent magnet trough 2 22 is nested with a tile type permanent magnet two.
After the permanent magnet machine rotor of the present invention uses as outer rotor, the utilization rate in rotor space can be improved, further
Improve torque output capability.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of equivalents can be carried out to technical scheme, this
A little equivalents belong to protection scope of the present invention.
Claims (5)
- A kind of 1. permanent magnet machine rotor, it is characterised in that：It is same including rotor core, rotating shaft and tile type permanent magnet, rotor core Axle is arranged in rotating shaft；Rotor core includes Consequent pole permanent magnet motor rotor core and is disposed in parallel in Consequent pole permanent magnet motor rotor core both sides Conventional permanent magnet electric machine rotor iron core；The axial length of each Conventional permanent magnet electric machine rotor iron core is 0.1-0.3 times of whole rotor core axial length；The excircle or inner circumferential surface of Consequent pole permanent magnet motor rotor core are circumferentially uniformly laid with p salient pole, and adjacent two A permanent magnet trough two is formed between individual salient pole；Wherein, p is motor number of pole-pairs；The excircle or inner circumferential surface of Conventional permanent magnet electric machine rotor iron core are circumferentially uniformly laid with 2p permanent magnet trough one；Each permanent magnet trough one and each nested tile type permanent magnet in each permanent magnet trough two；Wherein, it is nested in permanent magnet Tile type permanent magnet in groove one is tile type permanent magnet one, and the tile type permanent magnet being nested in permanent magnet trough two is tile type Permanent magnet two；The magnetizing direction of two neighboring tile type permanent magnet one is on the contrary, and a pair of magnetic poles of formation；Magnet isolation tank is provided between tile type permanent magnet two and Adjacent salient poles；The magnetizing direction of all tile type permanent magnets two is equal Identical, tile type permanent magnet two forms a pair of magnetic poles with one of Adjacent salient poles.
- 2. permanent magnet machine rotor according to claim 1, it is characterised in that：The axial length of tile type permanent magnet two is less than Or the axial length equal to Consequent pole permanent magnet motor rotor core.
- 3. permanent magnet machine rotor according to claim 1, it is characterised in that：The axial direction of Conventional permanent magnet electric machine rotor iron core is long Spend for 0.2-0.3 times of whole rotor core axial length.
- 4. permanent magnet machine rotor according to claim 1, it is characterised in that：Tile type permanent magnet one and tile type permanent magnet Two use radial magnetizing or parallel magnetization.
- 5. permanent magnet machine rotor according to claim 1, it is characterised in that：The axle of two Conventional permanent magnet electric machine rotor iron cores To equal length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388022.3A CN107425629B (en) | 2017-05-27 | 2017-05-27 | Permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388022.3A CN107425629B (en) | 2017-05-27 | 2017-05-27 | Permanent magnet motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107425629A true CN107425629A (en) | 2017-12-01 |
| CN107425629B CN107425629B (en) | 2020-01-10 |
Family
ID=60428502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710388022.3A Active CN107425629B (en) | 2017-05-27 | 2017-05-27 | Permanent magnet motor rotor |
Country Status (1)
| Country | Link |
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| CN (1) | CN107425629B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880184A (en) * | 2018-08-20 | 2018-11-23 | 安徽理工大学 | A kind of Linear-rotation permanent-magnet actuator of novel short mover salient-pole structure |
| CN109149818A (en) * | 2018-10-25 | 2019-01-04 | 南京康尼电子科技有限公司 | A kind of low-cost and high-performance harmonic wave cuts the continuous pole permanent-magnet synchronous machine of polar form |
| CN109888950A (en) * | 2019-03-20 | 2019-06-14 | 哈尔滨理工大学 | A kind of rotor structure of weakening cogging torque of permanent magnet motor |
| CN112448502A (en) * | 2019-09-05 | 2021-03-05 | 中车时代电动汽车股份有限公司 | Surface-mounted rotor of vehicle permanent magnet driving motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880184A (en) * | 2018-08-20 | 2018-11-23 | 安徽理工大学 | A kind of Linear-rotation permanent-magnet actuator of novel short mover salient-pole structure |
| CN109149818A (en) * | 2018-10-25 | 2019-01-04 | 南京康尼电子科技有限公司 | A kind of low-cost and high-performance harmonic wave cuts the continuous pole permanent-magnet synchronous machine of polar form |
| CN109888950A (en) * | 2019-03-20 | 2019-06-14 | 哈尔滨理工大学 | A kind of rotor structure of weakening cogging torque of permanent magnet motor |
| CN112448502A (en) * | 2019-09-05 | 2021-03-05 | 中车时代电动汽车股份有限公司 | Surface-mounted rotor of vehicle permanent magnet driving motor |
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| Publication number | Publication date |
|---|---|
| CN107425629B (en) | 2020-01-10 |
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