CN109245471A - A kind of alternately polar permanent magnetic vernier motor - Google Patents
A kind of alternately polar permanent magnetic vernier motor Download PDFInfo
- Publication number
- CN109245471A CN109245471A CN201811315055.6A CN201811315055A CN109245471A CN 109245471 A CN109245471 A CN 109245471A CN 201811315055 A CN201811315055 A CN 201811315055A CN 109245471 A CN109245471 A CN 109245471A
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- outer stator
- pole
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000004804 winding Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 3
- 210000000515 tooth Anatomy 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/022—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator
- H02K21/025—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the thickness of the air gap between field and armature
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
本发明公开了一种交替极式永磁游标电机，包括外定子部分、转子部分及内定子部分，外定子部分包括外定子铁心，外定子铁心内周向均匀间隔分布有外定子槽和外定子齿；所述外定子槽内嵌有电枢绕组；所述外定子齿包括交替布置的定子齿A和定子齿B，所述定子齿A端部为一个调制极；所述定子齿B的端部分裂为两个调制极，调制极之间布置有外定子永磁体阵列。本发明的有益效果为：本发明设内定子和外定子，这种双定子结构可有效利用交替极永磁体磁场，减小漏磁，提高转矩；外定子铁心上两种定子齿交替排列，有利于增大槽容积；外定子上的Halbach永磁体阵列有利于增大气隙磁密，提高输出转矩。
The invention discloses an alternating-pole permanent magnet vernier motor, comprising an outer stator part, a rotor part and an inner stator part, the outer stator part includes an outer stator iron core, and the outer stator iron core is uniformly spaced with outer stator slots and an outer stator in the inner circumference. teeth; armature windings are embedded in the outer stator slots; the outer stator teeth include alternately arranged stator teeth A and B, and the end of the stator tooth A is a modulation pole; the end of the stator tooth B The part is split into two modulation poles, and an outer stator permanent magnet array is arranged between the modulation poles. The beneficial effects of the present invention are as follows: the present invention is provided with an inner stator and an outer stator, and the double-stator structure can effectively utilize the alternating pole permanent magnet magnetic field to reduce magnetic flux leakage and improve torque; two kinds of stator teeth on the outer stator core are alternately arranged, It is beneficial to increase the slot volume; the Halbach permanent magnet array on the outer stator is beneficial to increase the air gap magnetic density and improve the output torque.
Description
Technical field
The present invention relates to motor device technical fields, and in particular to a kind of alternately polar permanent magnetic vernier motor.
Background technique
Permanent magnetism vernier motor introduces Wehnelt electrode structure on traditional permanent magnet motor stator tooth, is imitated using special vernier
It answers, modulates the low high-revolving stator armature winding magnetic field of number of pole-pairs, it can be with the permanent magnet magnetic of the high number of pole-pairs slow-speed of revolution with acquisition
The harmonic field component that field matches and acts on.This mode can be real under conditions of not increasing the volume and slot number of motor
The target of existing low speed high torque.
The low speed high torque ability of permanent magnetism vernier motor, can be applied to the occasion of electric-machine directly-driven, such as hub motor, adopts
Being directly driven with magneto can be avoided using gear-box, simplify mechanical structure, eliminate due to caused by gear engaged transmission
Noise and failure, to improve the efficiency and reliability of system.But permanent magnetism vernier motor is breaking through torque limit and is reducing tooth
It also needs more to make great efforts and put into slot torque.Had in recent years scholar propose it is a kind of using two-way field mudulation effect design forever
Magneto, two-way field mudulation effect is similar to cursor effect principle, is increased by introducing Halbach permanent array on stator
The air gap of forceful electric power machine is airtight, to increase the output torque of motor, but the problems such as the magnetic leakage of motor and cogging torque still more
Obviously, and stator structure is complicated, increases the difficulty and cost of manufacture and installation.
Alternately pole electric machine structure is usually used in bearing-free motor, to realize that magnetic suspension winding and torque winding solve in structure
Coupling, simplified control method.In recent years, researcher improves the gas of radial motor using alternately pole structure cooperation Halbach array
Gap flux density provides a new thinking for radial motor design.But Halbach array will increase motor to a certain extent
Torque pulsation, and the magnetic field of motor is enabled to be not easy to modulate.
Summary of the invention
It is an object of the present invention in view of the deficiencies of the prior art, provide under a kind of low speed that torque is big, cogging torque is small
Alternately polar permanent magnetic vernier motor.
A kind of the technical solution adopted by the present invention are as follows: alternately polar permanent magnetic vernier motor, including external stator part, rotor portions
Divide and inner stator part, external stator part point include external stator iron core, external stator iron core inner circumferential has been evenly spaced on external stator
Slot and external stator tooth；The external stator slot is embedded with armature winding；The external stator tooth includes the stator tooth A being alternately arranged and determines
Sub- tooth B, the end the stator tooth A are a Wehnelt electrode；The end of the stator tooth B is split into two Wehnelt electrodes, Wehnelt electrode it
Between be disposed with external stator permanent magnet array.
According to the above scheme, each external stator permanent magnet array includes an external stator radial permanent magnet body and two difference positions
External stator circumferential direction permanent magnet in external stator radial permanent magnet body two sides；The external stator radial permanent magnet body in a radially outer direction or
Radial inwardly direction magnetization, two external stator circumferential direction permanent magnets tangentially magnetize in opposite direction.
According to the above scheme, the rotor portion includes rotor core, and rotor core is circumferentially-spaced to open up rotor slot, adjacent
Two rotor slot shapes at rotor tooth between be embedded in rotor permanent magnet, what rotor tooth and rotor permanent magnet formed array replaces pole knot
Structure, alternately pole structure can be considered that rotor tooth is magnetized to opposite polarity magnet by permanent magnet in the same direction.
According to the above scheme, the inner stator point includes internal stator iron core, internal stator iron core central hole, internal stator iron core
Outer peripheral surface is circumferentially spaced to offer inner stator slot, and default pilot trench is embedded with armature winding.
According to the above scheme, the outer wall of the internal stator iron core is fixed with magnetic guiding loop, and the outer peripheral surface of magnetic guiding loop is equipped with salient pole
Structure.
According to the above scheme, the rotor permanent magnet is homopolarity.
According to the above scheme, on the number of pole-pairs of the external stator permanent magnet array and magnetic guiding loop salient-pole structure quantity PsPhase
Deng the quantity P of salient-pole structure on magnetic guiding loops, armature winding number of pole-pairs Pw, the number of pole-pairs P of rotor permanent magnetrMeet relationship:
Ps- Pw=Pr。
According to the above scheme, the external stator iron core, internal stator iron core, magnetic guiding loop and rotor core are by with high magnetic permeability
Silicon steel material be made.
According to the above scheme, the external stator radial permanent magnet body, external stator circumferential direction permanent magnet and rotor permanent magnet are by neodymium iron
Boron material is made.
The invention has the benefit that
1, the present invention sets inner stator and external stator, and this double-stator structure can efficiently use alternately pole magnetic field of permanent magnet, subtract
Small leakage field improves torque；
2, two kinds of stator tooths are alternately arranged on external stator iron core: there is a Wehnelt electrode in the end stator tooth A；Stator tooth B is being held
Portion is split into two Wehnelt electrodes, and the Halbach permanent array arranged between Wehnelt electrode is conducive to increase outside air gap flux density, mention
High output torque；
3, external stator permanent magnet is arranged according to Halbach array, and external stator radial permanent magnet body is radially or inwardly
Direction magnetization, and other two external stator circumferential direction permanent magnet tangentially magnetizes in opposite direction, to enhance outer air gap unilateral magnetic field strength
Degree, improves the torque density of motor, can obtain bigger output torque；
4, rotor reduces the dosage of permanent magnet using alternately pole structure；
5, fixed/rotor permanent magnet number of pole-pairs and armature winding number of pole-pairs meet the relationship of two-way field mudulation effect, can get
The ability of low speed high torque；The higher hamonic wave that motor contains has been modulated using the method for two-way field mudulation effect, has reduced torque
Pulsation；
6, present invention design has the magnetic conduction ring structure of certain amount salient pole, modulates the magnetic field of inner stator armature winding, makes
The high low speed rotating excitation field of inner stator and rotor can interact；
7, the present invention has rational design, and feasibility is good, high reliablity.
Detailed description of the invention
Fig. 1 is the two-dimensional structure schematic diagram of a specific embodiment of the invention.
Fig. 2 is the schematic perspective view of the present embodiment.
Fig. 3 is the single-phase back-emf figure of the present embodiment.
The cogging torque figure of Fig. 4 the present embodiment.
Fig. 5 is output torque figure of the present embodiment when giving the operation of 15A electric current.
Fig. 6 is magnetic figure when the present embodiment loads.
Wherein: 1, winding；2, external stator iron core；3, external stator radial permanent magnet body；4, external stator circumferential direction permanent magnet；5, rotor
Iron core；6, rotor permanent magnet；7, magnetic guiding loop；8, internal stator iron core；9, external stator tooth A；10, external stator tooth B；11, salient-pole structure.
Specific embodiment
For a better understanding of the present invention, the present invention is further described through in the following with reference to the drawings and specific embodiments.
A kind of alternately polar permanent magnetic vernier motor as depicted in figs. 1 and 2, including external stator part, rotor portion and interior
Stationary part, wherein
External stator part point includes external stator iron core 2, and 2 inner circumferential of external stator iron core has been evenly spaced on external stator slot and outer
Stator tooth；The external stator slot is embedded with armature winding 1；The external stator tooth includes the stator tooth A9 and stator tooth being alternately arranged
B10, the stator tooth A9 are conventional structure, and there is a Wehnelt electrode in end；The stator tooth B10 is split into two modulation in end
Pole is disposed with external stator permanent magnet array namely Halbach permanent array, each external stator permanent magnet battle array between Wehnelt electrode
Column include that an external stator radial permanent magnet body 3 and two external stators for being located at 3 two sides of external stator radial permanent magnet body are circumferential forever
Magnet 4；The external stator radial permanent magnet body 3 is in a radially outer direction or radial inwardly direction magnetizes, and two external stator circumferential directions
Permanent magnet 4 is based on Halbach principle and tangentially magnetizes in opposite direction；
The rotor portion includes rotor core 5, and rotor core 5 is circumferentially-spaced to open up rotor slot, in two neighboring rotor
Rotor permanent magnet 6 is embedded between the rotor tooth that slot is formed, rotor tooth replaces pole structure with the formation array of rotor permanent magnet 6, hands over
It can be considered that rotor tooth is magnetized to opposite polarity magnet by permanent magnet 6 in the same direction for pole structure；
The inner stator point includes internal stator iron core 8, and internal stator iron core 8 is common straight-tooth structure, and central hole is interior
8 outer peripheral surface of stator core is circumferentially spaced to offer inner stator slot, and default pilot trench is embedded with the armature winding 1 of 4 pole single layer chain types；
Internal stator iron core 8 has been bolted magnetic guiding loop 7, and the outer peripheral surface of magnetic guiding loop 7 is equipped with salient-pole structure 11；Salient-pole structure 11 is same
Sample plays the role of Wehnelt electrode, to modulate the high-speed magnetic field on internal stator iron core three-phase windings 1.
In the present invention, rotor permanent magnet 6 is homopolarity, and pole embrace is 1；The number of pole-pairs of external stator permanent magnet array,
The number of pole-pairs of rotor permanent magnet 6 and the number of pole-pairs of armature winding 1 meet the requirement of two-way field mudulation effect, the external stator permanent magnetism
The quantity P of salient-pole structure 11 in the number of pole-pairs and magnetic guiding loop 7 of volume arraysIt is equal, the quantity P of salient-pole structure 11 on magnetic guiding loop 7s, electricity
The number of pole-pairs P of pivot winding 1w, the number of pole-pairs P of rotor permanent magnet 6rMeet relationship: Ps- Pw=Pr.In the present embodiment, PsIt is 18, Pw
It is 2, PrIt is 16.
In the present invention, the external stator iron core 2, internal stator iron core 8, magnetic guiding loop 7 and rotor core 5 are by with high magnetic conductance
The silicon steel material of rate is made；The external stator radial permanent magnet body 3, external stator circumferential direction permanent magnet 4 and rotor permanent magnet 6 are by neodymium iron
Boron material is made；Armature winding 1 is the three-phase windings of 4 pole single layer chain types.
Finally it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Referring to embodiment, invention is explained in detail, for those skilled in the art, still can be to aforementioned
Technical solution documented by each embodiment is modified or equivalent replacement of some of the technical features, but it is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315055.6A CN109245471B (en) | 2018-11-06 | 2018-11-06 | An alternating pole permanent magnet vernier motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315055.6A CN109245471B (en) | 2018-11-06 | 2018-11-06 | An alternating pole permanent magnet vernier motor |
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| CN109245471A true CN109245471A (en) | 2019-01-18 |
| CN109245471B CN109245471B (en) | 2020-01-31 |
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| CN201811315055.6A Active CN109245471B (en) | 2018-11-06 | 2018-11-06 | An alternating pole permanent magnet vernier motor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112878A (en) * | 2019-04-24 | 2019-08-09 | 华中科技大学 | A kind of extremely tangential excitation vernier magneto of alternating |
| CN110460182A (en) * | 2019-05-28 | 2019-11-15 | 东南大学 | Modular permanent magnet compound self-gearing servo motor based on alternating poles |
| CN110808673A (en) * | 2019-12-09 | 2020-02-18 | 武汉理工大学 | Novel double-stator Halbach alternating pole permanent magnet vernier motor |
| EP3754823A1 (en) * | 2019-06-19 | 2020-12-23 | BioCoRe S. Coop. | High-efficiency compact electric generator for wind turbine farms |
| CN112467901A (en) * | 2020-11-12 | 2021-03-09 | 华中科技大学 | Magnetic gear composite direct drive motor and application thereof |
| CN112688454A (en) * | 2020-12-15 | 2021-04-20 | 大连海事大学 | Permanent-magnet fault-tolerant vernier rim propulsion motor with optimized surface shape of alternating-pole rotor |
| CN114629318A (en) * | 2022-03-16 | 2022-06-14 | 佳木斯电机股份有限公司 | Magnetic field modulation motor, stator side permanent magnet fixing mode and dual-rotor oil injection and discharge structure |
| CN115347753A (en) * | 2022-07-15 | 2022-11-15 | 南京航空航天大学 | A dual-stator motor based on synchronous and asynchronous double modulation of excitation source |
| CN118074369A (en) * | 2024-03-06 | 2024-05-24 | 山东科技大学 | High-torque-density magnetic field modulation fault-tolerant permanent magnet direct-driven cutting motor for tunneling robot |
| CN118214176A (en) * | 2022-12-15 | 2024-06-18 | 益阳宝转机电有限责任公司 | Stator-rotor double-halbach array permanent magnet vernier motor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112878A (en) * | 2019-04-24 | 2019-08-09 | 华中科技大学 | A kind of extremely tangential excitation vernier magneto of alternating |
| CN110460182A (en) * | 2019-05-28 | 2019-11-15 | 东南大学 | Modular permanent magnet compound self-gearing servo motor based on alternating poles |
| EP3754823A1 (en) * | 2019-06-19 | 2020-12-23 | BioCoRe S. Coop. | High-efficiency compact electric generator for wind turbine farms |
| CN110808673B (en) * | 2019-12-09 | 2021-11-23 | 武汉理工大学 | Novel double-stator Halbach alternating pole permanent magnet vernier motor |
| CN110808673A (en) * | 2019-12-09 | 2020-02-18 | 武汉理工大学 | Novel double-stator Halbach alternating pole permanent magnet vernier motor |
| CN112467901A (en) * | 2020-11-12 | 2021-03-09 | 华中科技大学 | Magnetic gear composite direct drive motor and application thereof |
| CN112467901B (en) * | 2020-11-12 | 2022-02-18 | 华中科技大学 | A magnetic gear compound direct drive motor and its application |
| CN112688454A (en) * | 2020-12-15 | 2021-04-20 | 大连海事大学 | Permanent-magnet fault-tolerant vernier rim propulsion motor with optimized surface shape of alternating-pole rotor |
| CN114629318A (en) * | 2022-03-16 | 2022-06-14 | 佳木斯电机股份有限公司 | Magnetic field modulation motor, stator side permanent magnet fixing mode and dual-rotor oil injection and discharge structure |
| CN115347753A (en) * | 2022-07-15 | 2022-11-15 | 南京航空航天大学 | A dual-stator motor based on synchronous and asynchronous double modulation of excitation source |
| CN118214176A (en) * | 2022-12-15 | 2024-06-18 | 益阳宝转机电有限责任公司 | Stator-rotor double-halbach array permanent magnet vernier motor |
| CN118074369A (en) * | 2024-03-06 | 2024-05-24 | 山东科技大学 | High-torque-density magnetic field modulation fault-tolerant permanent magnet direct-driven cutting motor for tunneling robot |
| CN118074369B (en) * | 2024-03-06 | 2024-12-03 | 山东科技大学 | A high torque density magnetic field modulation fault-tolerant permanent magnet direct drive cutting motor for tunneling robots |
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