CN108933511A - Eccentric tooth-like permanent magnetism vernier motor - Google Patents
Eccentric tooth-like permanent magnetism vernier motor Download PDFInfo
- Publication number
- CN108933511A CN108933511A CN201810960828.XA CN201810960828A CN108933511A CN 108933511 A CN108933511 A CN 108933511A CN 201810960828 A CN201810960828 A CN 201810960828A CN 108933511 A CN108933511 A CN 108933511A
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- Prior art keywords
- tooth
- modulation
- cup
- stator
- casing
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Classifications
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- 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
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- 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
- H02K1/2786—Outer rotors
-
- 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
- H02K21/028—Means for mechanical adjustment of the excitation flux by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Eccentric tooth-like permanent magnetism vernier motor, belongs to vernier fault-tolerant motor field, and the present invention is to solve the problems such as traditional vernier motor output torque is small, back emf waveform is trapezoidal.The present invention program: casing be it is columnar structured, output shaft runs through casing both ends, and left end cap extends to form pedestal around output shaft to casing internal, there is air gap between pedestal and output shaft；Outside pedestal, cup-shaped rotor bottom of a cup is fixed on output shaft stator sleeve, and the cup body of cup-shaped rotor is set between casing and stator and open end is towards left end cap, stator and casing air gap between cup-shaped rotor；Stator includes the stator core of annular, the inner ring of stator core is fixed in outside pedestal, the outer round surface of stator core is circumferentially alternating to be provided with n first modulation bar and n second modulation bar, the top of first modulation bar is provided with a modulation tooth, there are two modulate tooth for the top setting of second modulation bar, 3n modulation tooth position is on same circumference and uniformly, and the modulation tooth is using eccentric tooth.
Description
Technical field
The invention belongs to vernier fault-tolerant motor fields, are related to a kind of tooth-like motor of bias.
Background technique
In recent years, direct driving technologies receive more and more attention, and become the research hotspot in current motor field.Tradition
Although direct-driving motor can reduce mechanical loss, noise, improve efficiency and reliability, in order to obtain larger turn
Square, volume is generally large, also increased in the cost of control circuit component.
Vernier motor based on Flux modulation principle the advantages that simple, reliable for operation and high torque density, is with its structure
More and more science researchers are paid attention to.Low speed high torque output may be implemented in vernier motor, is particularly suitable for wind-force hair
The application that electricity, steamer propulsion and electric car etc. need to directly drive.Although traditional vernier motor can be used as directly drives
Motor, but its disadvantage that there are still permanent magnet utilization rates is low, output torque is little.
Summary of the invention
The present invention proposes to solve the problems such as traditional vernier motor output torque is small, back emf waveform is trapezoidal
A kind of tooth-like permanent magnetism vernier motor of bias.
The tooth-like permanent magnetism vernier motor of bias of the present invention, including casing 7, stator 4, cup-shaped rotor 6 and output shaft 3；Machine
Shell 7 be it is columnar structured, the both ends of casing 7 pass through left end cap 1 and right end cap 2 respectively and block, and output shaft 3 runs through two end caps,
Left end cap 1 extends to form pedestal 1-1 around output shaft 3 to inside casing 7, and there are air gaps between pedestal 1-1 and output shaft 3；It is fixed
Son 4 is fixed in outside pedestal 1-1, and the bottom of a cup 6-1 of cup-shaped rotor 6 is fixed on output shaft 3, the cup body 6-2 setting of cup-shaped rotor 6
Between casing 7 and stator 4 and open end is towards left end cap 1, stator 4 and casing 7 between cup-shaped rotor 6 there are air gap,
Stator 4, cup-shaped rotor 6, casing 7 and output shaft 3 are coaxially disposed；
Stator 4 includes the stator core 4-1 of annular, and the inner ring of stator core 4-1 is fixed in outside pedestal 1-1, stator iron
The outer round surface of core 4-1 is circumferentially alternating to be provided with bar 4-2 and n the second modulation bar 4-3 of n first modulation, the first modulation bar
The top of 4-2 is provided with the top setting of modulation tooth a 4-4, the second modulation bar 4-3 there are two tooth 4-4 is modulated, and 3n is modulated
Tooth 4-4 is located on same circumference and is evenly distributed with, and the modulation tooth 4-4 is using eccentric tooth.
Preferably, the internal circular surfaces of cup body 6-2 are along the circumferential direction evenly distributed with permanent magnet 5, between permanent magnet 5 and modulation tooth 4-4
There are air gaps；Bar 4-2 and n the second modulation common five phase armature winding of coiling of bar 4-3 of n first modulation.
Preferably, the magnetizing direction of adjacent two pieces of permanent magnets 5 is opposite.
Preferably, permanent magnet 5 uses Sintered NdFeB magnet.
Preferably, it is realized and is rotatablely connected by bearing between left end cap 1, right end cap 2 and output shaft 3.
Preferably, two modulation tooth 4-4 on the second modulation top bar 4-3 are symmetrically set centered on the radial center axis of bar
It sets.
Preferably, the eccentric toothing for modulating tooth 4-4 is that intermediate air gap is short, the long structure of both sides air gap.
Preferably, cup-shaped rotor 6 is formed by silicon steel plate stacking.
Beneficial effects of the present invention: the tooth-like permanent magnetism vernier motor of bias proposed by the present invention passes through inner stator Flux modulation list
The high-speed magnetic field that member generates stator winding is modulated, and is matched with the Nd-Fe-B permanent magnetic magnetic pole on rotor and then is completed low speed
Big torque output, and possess preferable sinusoidal back-emf and biggish stable output torque, and have fault-tolerant performance.
The winding wound on inner stator is single layer integral pitch winding, and structure is simple, and coiling is convenient and does not have layer insulation, fixed
Pilot trench utilization rate is high.
Centering type teeth portion structure proposed by the invention, so that gas length circumferentially differs, in the both ends longest of armature,
Therefore corresponding armature tooth middle section air-gap reluctance is most short, and both sides are maximum, and due to air-gap reluctance maximum, the magnetic of permanent magnet is dynamic
Gesture consumes on air gap mostly, and the magnetic line of force that the smallest place of magnetic resistance is passed through is more, the magnetic line of force that the maximum place of magnetic resistance is passed through
Fewer, so that the air gap radial direction flux density on position corresponding in the middle part of armature is bigger, the corresponding flux density in both sides is smaller, phase
Compared with counter electromotive force more sinusoidalization of traditional permanent magnetism vernier motor, torque output capability increases close to half.It is proposed by the invention
Electric machine structure only changed in stationary part, in the case where not influencing other performance to the counter electromotive force of motor have more
Good effect of optimization simultaneously can promote torque output capability into half, electric car etc. directly drive in application have it is high
Practical application value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the tooth-like permanent magnetism vernier motor of bias of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Specific embodiment
Specific embodiment one illustrates present embodiment, the tooth-like permanent magnetism of bias described in present embodiment referring to Fig. 1 and Fig. 2
Vernier motor, including casing 7, stator 4, cup-shaped rotor 6 and output shaft 3；Casing 7 is columnar structured, the both ends difference of casing 7
It is blocked by left end cap 1 and right end cap 2, output shaft 3 runs through two end caps, and left end cap 1 around output shaft 3 to prolonging inside casing 7
It stretches to form pedestal 1-1, there are air gaps between pedestal 1-1 and output shaft 3；Stator 4 is fixed in outside pedestal 1-1, cup-shaped rotor 6
Bottom of a cup 6-1 is fixed on output shaft 3, and the cup body 6-2 of cup-shaped rotor 6 is set between casing 7 and stator 4 and open end direction
There are air gap, stator 4, cup-shaped rotor 6, casing 7 and output shafts 3 between cup-shaped rotor 6 for left end cap 1, stator 4 and casing 7
Coaxial arrangement；
Stator 4 includes the stator core 4-1 of annular, and the inner ring of stator core 4-1 is fixed in outside pedestal 1-1, stator iron
The outer round surface of core 4-1 is circumferentially alternating to be provided with bar 4-2 and n the second modulation bar 4-3 of n first modulation, the first modulation bar
The top of 4-2 is provided with the top setting of modulation tooth a 4-4, the second modulation bar 4-3 there are two tooth 4-4 is modulated, and 3n is modulated
Tooth 4-4 is located on same circumference and is evenly distributed with, and the modulation tooth 4-4 is using eccentric tooth.
The internal circular surfaces of cup body 6-2 are along the circumferential direction evenly distributed with permanent magnet 5, and the internal circular surfaces of cup body 6-2 are circumferentially provided with
The slot position of spacing distribution, permanent magnet 5 is embedded in the slot position；There are air gaps between permanent magnet 5 and modulation tooth 4-4；N first is adjusted
The bar 4-2 and n processed second modulation common five phase armature winding of coiling of bar 4-3.Five phase windings lead to five symmetrical electric currents, in inside gas
Modulated tooth 4-2 is generated in gap, the rotating multiple magnetic field generated after 4-3 is modulated is mutual with the permanent magnet 5 on cup-shaped rotor 6
Electromagnetic torque is acted on and then generated, realizes low speed high torque output.The winding wound on stator 4 is single layer integral pitch winding, knot
Structure is simple, and coiling is convenient and does not have layer insulation, and stator slot utilization rate is high.
The magnetizing direction of adjacent two pieces of permanent magnets 5 is opposite.
Permanent magnet 5 uses Sintered NdFeB magnet.
It is realized and is rotatablely connected by bearing between left end cap 1, right end cap 2 and output shaft 3.
Two modulation tooth 4-4 on the second modulation top bar 4-3 are symmetrical arranged centered on the radial center axis of bar.
The eccentric toothing for modulating tooth 4-4 is that intermediate air gap is short, the long structure of both sides air gap.
Cup-shaped rotor 6 is formed by silicon steel plate stacking.
Present embodiment is only changed in the stationary part of existing motor, in the case where not influencing other performance to electricity
The counter electromotive force of machine has better effect of optimization and can promote the torque output capability into half.
The tooth-like structure of bias used by present embodiment so that gas length circumferentially differs, the both ends of armature most
It is long, therefore corresponding armature tooth middle section air-gap reluctance is most short, both sides are maximum, since air-gap reluctance is maximum, permanent magnet
Magnetomotive force consumes on air gap mostly, and the magnetic line of force that the smallest place of magnetic resistance is passed through is more, the magnetic that the maximum place of magnetic resistance is passed through
The line of force is fewer, so that the air gap radial direction flux density on position corresponding in the middle part of armature is bigger, the corresponding flux density in both sides is got over
Small, compared to counter electromotive force more sinusoidalization of traditional permanent magnetism vernier motor, torque output capability increases close to half.In electronic vapour
Vehicle etc., which directly drives, high practical application value in application.
Claims (8)
1. eccentric tooth-like permanent magnetism vernier motor, including casing (7), stator (4), cup-shaped rotor (6) and output shaft (3)；Casing (7)
To be columnar structured, the both ends of casing (7) pass through left end cap (1) respectively and right end cap (2) blocks, and output shaft (3) runs through two
End cap, left end cap (1) extend to form pedestal (1-1) to casing (7) is internal around output shaft (3), pedestal (1-1) and output shaft
(3) there are air gaps between；Stator (4) is fixed in pedestal (1-1) outside, and the bottom of a cup (6-1) of cup-shaped rotor (6) is fixed in output shaft
(3) on, the cup body (6-2) of cup-shaped rotor (6) is set between casing (7) and stator (4) and open end is towards left end cap (1),
There are air gap, stator (4), cup-shaped rotor (6), casing (7) and outputs between cup-shaped rotor (6) for stator (4) and casing (7)
Axis (3) coaxial arrangement；
It is characterized in that, stator (4) includes the stator core (4-1) of annular, the inner ring of stator core (4-1) is fixed in pedestal
(1-1) is external, and the outer round surface of stator core (4-1) is circumferentially alternating to be provided with n first modulation bar (4-2) and n second
It modulates bar (4-3), the top of the first modulation bar (4-2) is provided with a modulation tooth (4-4), the top of the second modulation bar (4-3)
Setting is there are two tooth (4-4) is modulated, and 3n modulation tooth (4-4) is located on same circumference and uniformly distributed, modulation tooth (4-4) use
Eccentric tooth.
2. eccentric tooth-like permanent magnetism vernier motor according to claim 1, which is characterized in that the internal circular surfaces edge of cup body (6-2)
Circumferencial direction is evenly distributed with permanent magnet (5), and there are air gaps between permanent magnet (5) and modulation tooth (4-4)；The first modulation bar (4-2) of n and
N second modulation bar (4-3) five phase armature winding of common coiling.
3. eccentric tooth-like permanent magnetism vernier motor according to claim 2, which is characterized in that adjacent two pieces permanent magnet (5) are filled
Magnetic direction is opposite.
4. the tooth-like permanent magnetism vernier motor of the bias according to Claims 2 or 3, which is characterized in that permanent magnet (5) is using sintering neodymium
Iron boron magnet.
5. eccentric tooth-like permanent magnetism vernier motor according to claim 1, which is characterized in that left end cap (1), right end cap (2) with
It is realized and is rotatablely connected by bearing between output shaft (3).
6. eccentric tooth-like permanent magnetism vernier motor according to claim 1, which is characterized in that second modulation top bar (4-3)
Two modulation teeth (4-4) are symmetrical arranged centered on the radial center axis of bar.
7. eccentric tooth-like permanent magnetism vernier motor according to claim 1, which is characterized in that the eccentric tooth knot of modulation tooth (4-4)
Structure is that intermediate air gap is short, the long structure of both sides air gap.
8. eccentric tooth-like permanent magnetism vernier motor according to claim 1, which is characterized in that cup-shaped rotor (6) is by silicon steel sheet stack
It presses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810960828.XA CN108933511A (en) | 2018-08-22 | 2018-08-22 | Eccentric tooth-like permanent magnetism vernier motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810960828.XA CN108933511A (en) | 2018-08-22 | 2018-08-22 | Eccentric tooth-like permanent magnetism vernier motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108933511A true CN108933511A (en) | 2018-12-04 |
Family
ID=64445612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810960828.XA Pending CN108933511A (en) | 2018-08-22 | 2018-08-22 | Eccentric tooth-like permanent magnetism vernier motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108933511A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936268A (en) * | 2019-04-29 | 2019-06-25 | 无锡市科迈电气有限公司 | Outer rotor brushless motor |
| CN109962594A (en) * | 2019-05-05 | 2019-07-02 | 大国重器自动化设备(山东)股份有限公司 | Double output shaft servo motor for robot |
| CN113839481A (en) * | 2021-10-25 | 2021-12-24 | 南通大学 | Novel rhombus modulation pole vernier permanent magnet motor |
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| CN1659768A (en) * | 2002-06-04 | 2005-08-24 | 波峰实验室责任有限公司 | Rotary permanent magnet electric motor with varying air gap between interfacing stator and rotor elements |
| CN102710078A (en) * | 2012-06-13 | 2012-10-03 | 江苏大学 | Fault tolerance type permanent magnetic vernier motor |
| CN105743235A (en) * | 2016-04-08 | 2016-07-06 | 江苏大学 | High-torque low-loss permanent magnet fault-tolerant motor |
| CN105871140A (en) * | 2016-04-06 | 2016-08-17 | 哈尔滨理工大学 | Rotor dual-side permanent-magnet type single-winding dual-stator vernier motor |
| CN205829429U (en) * | 2016-07-21 | 2016-12-21 | 哈尔滨理工大学 | Rotor cage bar magnet steel compound bimorph transducer simplex winding vernier motor |
| CN207743777U (en) * | 2017-12-01 | 2018-08-17 | 江西清能高科技术有限公司 | A kind of low-power consumption electric fuel pump rotor iron core |
-
2018
- 2018-08-22 CN CN201810960828.XA patent/CN108933511A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1659768A (en) * | 2002-06-04 | 2005-08-24 | 波峰实验室责任有限公司 | Rotary permanent magnet electric motor with varying air gap between interfacing stator and rotor elements |
| CN102710078A (en) * | 2012-06-13 | 2012-10-03 | 江苏大学 | Fault tolerance type permanent magnetic vernier motor |
| CN105871140A (en) * | 2016-04-06 | 2016-08-17 | 哈尔滨理工大学 | Rotor dual-side permanent-magnet type single-winding dual-stator vernier motor |
| CN105743235A (en) * | 2016-04-08 | 2016-07-06 | 江苏大学 | High-torque low-loss permanent magnet fault-tolerant motor |
| CN205829429U (en) * | 2016-07-21 | 2016-12-21 | 哈尔滨理工大学 | Rotor cage bar magnet steel compound bimorph transducer simplex winding vernier motor |
| CN207743777U (en) * | 2017-12-01 | 2018-08-17 | 江西清能高科技术有限公司 | A kind of low-power consumption electric fuel pump rotor iron core |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109936268A (en) * | 2019-04-29 | 2019-06-25 | 无锡市科迈电气有限公司 | Outer rotor brushless motor |
| CN109962594A (en) * | 2019-05-05 | 2019-07-02 | 大国重器自动化设备(山东)股份有限公司 | Double output shaft servo motor for robot |
| CN109962594B (en) * | 2019-05-05 | 2024-01-26 | 大国重器自动化设备(山东)股份有限公司 | Double-output-shaft servo motor for robot |
| CN113839481A (en) * | 2021-10-25 | 2021-12-24 | 南通大学 | Novel rhombus modulation pole vernier permanent magnet motor |
| CN113839481B (en) * | 2021-10-25 | 2022-07-01 | 南通大学 | Novel rhombus modulation pole vernier permanent magnet motor |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181204 |
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