CN109525089A - Outer rotor transverse magnetic field flux-reversal permanent magnet generator - Google Patents
Outer rotor transverse magnetic field flux-reversal permanent magnet generator Download PDFInfo
- Publication number
- CN109525089A CN109525089A CN201811636688.7A CN201811636688A CN109525089A CN 109525089 A CN109525089 A CN 109525089A CN 201811636688 A CN201811636688 A CN 201811636688A CN 109525089 A CN109525089 A CN 109525089A
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- stator
- outer rotor
- permanent magnet
- core
- iron core
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- 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
- H02K1/17—Stator cores with permanent magnets
-
- 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
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention belongs to technical field of motors, are related to a kind of outer rotor transverse magnetic field flux-reversal permanent magnet generator.It includes outer rotor, inner stator, inner shaft, Circular Winding, bearing and end cap.Outer rotor includes n cuboid rotor core, and inner stator includes 2n U-shaped stator cores, and n is the natural number more than or equal to 1；Circular Winding is prolonged circumferencial direction and is wound in the intermediate space of U-shaped iron core；Permanent magnet is inserted into 2 side iron core V-grooves of the U-shaped iron core of inner stator, two pieces of permanent magnet magnetizing directions are identically formed magnetic pole on the inside of V-groove, and 2 side iron core magnetic poles of U-shaped iron core are contrary；Two circumferentially adjacent U-shaped iron cores of stator, the pole orientation of the same side iron core are opposite.On the basis of retaining horizontal magnetic field motor low-speed and large-torque feature, generator torque density can be further improved the present invention, and realize horizontal magnetic field motor convenient for large-scale serial production.
Description
Technical field
The invention belongs to motor fields, are related to a kind of outer rotor transverse magnetic field flux-reversal permanent magnet generator.
Background technique
With the raising of rapid economic development and living standards of the people, China needs to be continuously improved to the energy.However, passing
The cost that system fossil energy utilizes is higher and higher.Therefore, the development of new energy is more aobvious urgent and important for China.China
Remarkable break-throughs are had been achieved in terms of the development and utilization of new and renewable energy, technical level has large increase.The sun
It can begin to take shape with wind energy industryization, the new energy development potentiality such as biomass energy, nuclear energy, geothermal energy, Hydrogen Energy, ocean energy is huge
Greatly, large development is obtained in recent years.
Wind energy and ocean energy (tide energy or wave energy) are the important components in new energy, due to wind and ocean
The movement velocity of (tide or wave) is low, and the utilization of both energy requires low-speed generator and converts electric energy for mechanical energy.
The revolving speed of this generator is lower, is tens rpms to several hundred rpms.And generator is when powering to the load, power generation
Machine needs to export very big braking moment to prime mover, and according to the size formula of motor, such generator needs biggish volume
Or weight, just it is able to achieve above-mentioned requirements.Therefore, wind energy and a major issue of ocean power generator are exactly to promote generator
Torque density problem promotes the output torque of generator that is, under limited size or weight as far as possible.
Permanent-magnetic motor with transverse magnetic field has the characteristics that low-speed characteristic is good, torque density is high, low on electric vehicle, complete electric naval vessel etc.
Speed, high-torque direct driving field obtain Preliminary Applications.The most significant feature of permanent-magnetic motor with transverse magnetic field be winding cross section configuration with
Magnetic structure is not in the same plane.Mutual restricting relation is not present in electric load and magnetic loading, can independently choose, be easy to implement
High torque density.The torque density of transverse flux permanent magnetic motor report is up to 100kNm/m at present3~150kNm/m3.As it can be seen that laterally
Magnetic field permanent magnet motor is suitably applied in wind power generation and power generation with marine energy.But transverse flux motor is biggish scarce there are one
Point is that manufacture is difficult, is unfavorable for large-scale serial production.
Summary of the invention
The invention proposes a kind of lateral direction magnetic field permanent magnetism electric generator structures, are realized by the way that permanent magnet is added in stator core
The flux-reversal of motor is run.In this way on the basis of retaining horizontal magnetic field motor low-speed and large-torque feature, transverse magnetic is realized
Field motor is convenient for large-scale serial production.Moreover, the torque density of the generator has been obtained into one because using outer-rotor structure
Step improves.Wind power generation and ocean power generating device installation site nearby have rotary part, can't using outer-rotor structure
Additional complexity is brought to assembly.
The present invention is achieved through the following technical solutions.
Outer rotor transverse magnetic field flux-reversal permanent magnet generator, including outer rotor (1), inner stator (2), inner shaft (3), annular
Winding (4), bearing (5) and end cap (6).Outer rotor (1) includes n cuboid rotor core (8), and inner stator (2) includes 2n
U-shaped stator core (10), n are the natural number more than or equal to 1；Circular Winding (4) is prolonged circumferencial direction and is wound in U-shaped iron core (10)
Between in space；Permanent magnet (13) are inserted into 2 side iron core (11) V-grooves of the U-shaped iron core of inner stator (10), two pieces on the inside of V-groove
Permanent magnet (13) magnetizing direction is identically formed magnetic pole, and 2 side iron core (11) pole orientations of U-shaped iron core are opposite；Along the circumferential direction phase
Two adjacent U-shaped iron cores of stator (10), the pole orientation of the same side iron core are opposite.
Rotor core (8) is along the circumferential direction built up by rectangle silicon steel sheet.The U-shaped iron core of stator (10) consists of three parts, and 2
Side iron core (11) is built up by silicon steel sheet along axial direction, and air gap side is arc-shaped；Connect the middle core (12) of 2 side iron cores (11)
It is along the circumferential direction built up by silicon steel sheet.N rotor core (8) and casing (7) integrally welded formation outer rotor (1).2n fixed
The U-shaped iron core (10) of son and stator support (9) integrally welded formation inner stator (2).
Rotor core (8) and stator core (10) can be by soft-magnetic composite material straight formings.N rotor core (8)
With the integrally welded formation outer rotor of casing (7), the U-shaped iron core of 2n stator (10) and stator support (9) integrally welded formation
Inner stator.
1 group of outer rotor (1) and inner stator (2) are as 1 generator unit formation single-phase generator；2 generator units
90 degree of electrical angles are circumferentially offset, edge is axially mounted to together, that is, form diphaser；3 generator units are along circle
Circumferential direction is staggered 120 degree of electrical angles, along being axially mounted to together, that is, form threephase generator；M generator unit is circumferentially square
To the 360/m degree electrical angle that is staggered, edge is axially mounted to together, that is, forms m phase generator, and m is the natural number more than or equal to 1.
The invention has the advantages that.
1, present invention employs transverse magnetic field flux-reversal structures, are able to achieve higher electric load and magnetic in horizontal magnetic field motor
On the basis of load, permanent magnet is provided with by stator side iron core, so that air-gap field bipolarity changes, flux change rate is bigger,
Generator torque density can further be promoted.
2, permanent magnet of the present invention is fixed in stator core, and rotor-side is only made of iron core, and generator heat-radiation is functional,
High mechanical strength, high reliablity.
3, no matter stator core of the invention, rotor core use silicon steel sheet stack at or straight using soft-magnetic composite material
It is connected into type, manufacturing process is simple, and generator is suitable for large-scale serial production.
Detailed description of the invention
Fig. 1 is electric machine structure figure of the invention.Fig. 2 is the sectional view of generator outer rotor and inner stator.Fig. 3 is rotor iron
The heart and the U-shaped core construction figure of stator.Fig. 4 is flow direction figure in motor magnetic circuit.Fig. 5 be another aligned position rotor core with
The U-shaped core construction figure of stator.Fig. 6 is flow direction figure in another alignment position motors magnetic circuit.
In figure: 1 be outer rotor, 2 be inner stator, 3 be inner shaft, 4 be Circular Winding, 5 be bearing, 6 be end cap, 7 be casing,
8 it is rotor core, 9 be stator support, 10 be the U-shaped iron core of stator, 11 be side iron core, 12 be middle core, 13 is permanent magnet.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Fig.1, motor is by outer rotor (1), inner stator (2), inner shaft (3), Circular Winding (4), bearing (5) and end cap
(6) it forms, inner stator (2) and inner shaft (3) are assembled together to form the fixed part of generator, outer rotor (1) and end cap (6) dress
The rotating part for being formed together generator, fixed part and rotating part is fitted over to connect by bearing (5).
Referring to Fig. 2, outer rotor includes that (n is the nature more than or equal to 1 for casing (7) and n rotor core (8) two parts
Number), each rotor core (8) is along the circumferential direction built up by rectangle silicon steel sheet, and each rotor core (8) passes through welding and casing
It is fixed.Inner stator includes stator support (9) and 2n stator core (10).
Referring to Fig. 3, each stator core (10) is U-shaped, is made of 3 parts, and 2 side iron cores (11) are by silicon steel sheet along axial
It builds up, air gap side is arc-shaped；The middle core (12) for connecting 2 side iron cores (11) is along the circumferential direction folded by rectangle silicon steel sheet
At.Each U-shaped stator core (10) is fixed with stator support (9) by welding.The intermediate space of each U-shaped stator core (10)
As the slot of coiling, slot insulating paper in iron core surface cushion, along the circumferential direction coiling forms Circular Winding (4) to copper wire in slot, out
Line end is drawn by the centre bore in shaft.Circular Winding (4) can be solidified integrally, so by dipping lacquer or infusion epoxy resin
It is bound by no latitude glass tape or high-temperature insulation adhesive plaster, is fixed together with stator core (10) and stator support (9) afterwards.U
2 side iron cores (11) of iron-core are all provided with V-groove, permanent magnet (13) are inserted into slot, by detesting between permanent magnet (13) and slot
Oxygen glue is fixed.Two pieces of permanent magnet (13) magnetizing directions are identical on the inside of V-groove, form magnetic pole.The same U-shaped iron core (10) two of stator
Side pole orientation is on the contrary, circumferentially adjacent two U-shaped iron cores of stator (10), the pole orientation of the same side iron core are opposite.
Since rotor core (8) quantity on outer rotor (1) is the half of inner stator (2) U-shaped iron core (10) quantity, and
The two adjacent U-shaped iron core of stator (10) pole orientations are opposite.During rotation, when rotor core (8) and the U-shaped iron core of stator
(10) when being aligned, with reference to Fig. 4, the flow direction that is flowed through in the magnetic circuit that all rotor cores (8) and the U-shaped iron core of stator (10) are formed
It is identical.With reference to Fig. 5, when outer rotor (1) turns over the two U-shaped iron core of stator (10) distances, rotor core (8) and stator
U-shaped iron core (10) realizes alignment again, with reference to Fig. 6, in the magnetic circuit of rotor core at this time (8) and the U-shaped iron core of stator (10) formation
The flow direction flowed through is exactly the opposite.The magnetic circuit that Circular Winding (4) is in rotor core (8) and the U-shaped iron core of stator (10) is formed
Center, in this way, prime mover drives generator outer rotor (1) rotation, the magnetic flux around Circular Winding (4) in generator operation
Just constantly alternately change between positive and negative, electromotive force will be induced in Circular Winding (4) and exported to load.Due to stator U
Iron-core (10) is provided with permanent magnet (13), and flux change rate is big, and the generating capacity of the generator is strong.
Rotor core (8) and stator core (10) can also use soft-magnetic composite material straight forming.Soft-magnetic composite material
Processing is flexible, resistivity height, magnetic property and hot property isotropism.After this material, the eddy-current loss of motor can be reduced.
By optimizing air gap side iron core shape, the air gap magnetic density waveform most having is realized, so as to improve the EMF waveform of generator output.
But the permeability is lower than silicon steel sheet, and bigger magnetic hystersis loss, in same air gap flux density, material can be brought to motor
Dosage also can be more, increase cost.It, can be multiple according to practical application optimum selecting silicon steel sheet or soft magnetism in generator design
Condensation material manufactures iron core.
Fig. 1 show 1 group of outer rotor (1) and inner stator (2) as 1 generator unit and forms single-phase generator.Pass through
2 generator units are circumferentially offset into 90 degree of electrical angles, edge is axially mounted to together, can form diphaser；
By the way that 3 generator units are circumferentially offset 120 degree of electrical angles, edge is axially mounted to together, can form three-phase hair
Motor；By the way that m generator unit is circumferentially offset 360/m degree electrical angle, edge is axially mounted to together, can be formed
M phase generator, m are the natural number more than or equal to 1.Therefore, the present invention is convenient for modular implementation multiphase in this way to generate electricity very much
Machine scheme.
Referring to Fig. 3, Fig. 5, when the present invention is using silicon steel sheet manufacture iron core, rotor core (8) and U-shaped stator core (10)
Middle core (12) be rectangle silicon steel sheet be overrided to form, 2 side iron cores (11) of U-shaped stator core (10) also for substantially be in square
The silicon steel plate stacking of shape forms.Therefore, the present invention is very suitable to large-scale batch production.And punching silicon steel sheet raw material
When, due to being substantially all rectangle, it can be improved the utilization rate of silicon steel sheet raw material, save cost.
A specific embodiment of the invention is described in conjunction with attached drawing above, but these explanations cannot be understood to limit
The scope of the present invention, protection scope of the present invention are limited by appended claims, any in the claims in the present invention base
Change on plinth is all protection scope of the present invention.
Claims (8)
1. outer rotor transverse magnetic field flux-reversal permanent magnet generator, including outer rotor (1), inner stator (2), inner shaft (3), annular around
Group (4), bearing (5) and end cap (6), it is characterised in that: outer rotor (1) includes n cuboid rotor core (8), inner stator
(2) comprising 2n U-shaped stator cores (10), n is the natural number more than or equal to 1；Circular Winding (4) prolong circumferencial direction be wound on it is U-shaped
In the intermediate space of stator core (10)；Permanent magnet is inserted into 2 side iron core (11) V-grooves of inner stator (2) U-shaped iron core (10)
(13), two pieces of permanent magnet (13) magnetizing directions are identically formed magnetic pole, 2 side iron core (11) magnetic of U-shaped iron core (10) on the inside of V-groove
Extreme direction is opposite；Two circumferentially adjacent U-shaped iron cores of stator (10), the pole orientation of the same side iron core are opposite.
2. according to outer rotor transverse magnetic field flux-reversal permanent magnet generator described in right 1, it is characterised in that: rotor core (8)
It is along the circumferential direction built up by rectangle silicon steel sheet.
3. according to outer rotor transverse magnetic field flux-reversal permanent magnet generator described in right 1, it is characterised in that: the U-shaped iron core of stator
(10) it consists of three parts, 2 side iron cores (11) are built up by silicon steel sheet along axial direction, and air gap side is arc-shaped；Connect 2 side iron
The middle core (12) of the heart (11) is along the circumferential direction built up by silicon steel sheet.
4. according to outer rotor transverse magnetic field flux-reversal permanent magnet generator described in right 2, it is characterised in that: n rotor core
(8) with casing (7) integrally welded formation outer rotor (1).
5. according to outer rotor transverse magnetic field flux-reversal permanent magnet generator described in right 3, it is characterised in that: 2n stator is U-shaped
Iron core (10) and stator support (9) integrally welded formation inner stator (2).
6. according to outer rotor transverse magnetic field flux-reversal permanent magnet generator described in right 1, it is characterised in that: rotor core (8)
With stator core (10) all by soft-magnetic composite material straight forming.
7. according to outer rotor transverse magnetic field flux-reversal permanent magnet generator described in right 6, it is characterised in that: n rotor core
(8) one is welded into casing (7) integrally welded formation outer rotor (1), the U-shaped iron core of 2n stator (10) and stator support (8)
Body forms inner stator (2).
8. according to outer rotor transverse magnetic field flux-reversal permanent magnet generator described in right 1, it is characterised in that: 1 group of outer rotor (1)
Single-phase generator is formed as 1 generator unit with inner stator (2)；2 generator units circumferentially offset 90 degree of electricity
Angle, edge are axially mounted to together, that is, form diphaser；3 generator units circumferentially offset 120 degree of electric angles
Degree, edge are axially mounted to together, that is, form threephase generator；M generator unit circumferentially offsets 360/m degree electric angle
Degree, edge are axially mounted to together, that is, form m phase generator, and m is the natural number more than or equal to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636688.7A CN109525089A (en) | 2018-12-29 | 2018-12-29 | Outer rotor transverse magnetic field flux-reversal permanent magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636688.7A CN109525089A (en) | 2018-12-29 | 2018-12-29 | Outer rotor transverse magnetic field flux-reversal permanent magnet generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109525089A true CN109525089A (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811636688.7A Pending CN109525089A (en) | 2018-12-29 | 2018-12-29 | Outer rotor transverse magnetic field flux-reversal permanent magnet generator |
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| Country | Link |
|---|---|
| CN (1) | CN109525089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421654A (en) * | 2021-12-21 | 2022-04-29 | 威海奥文工业科技有限公司 | Transverse magnetic flux C-type embedded stator permanent magnet brushless wind driven generator |
-
2018
- 2018-12-29 CN CN201811636688.7A patent/CN109525089A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421654A (en) * | 2021-12-21 | 2022-04-29 | 威海奥文工业科技有限公司 | Transverse magnetic flux C-type embedded stator permanent magnet brushless wind driven generator |
| CN114421654B (en) * | 2021-12-21 | 2023-09-29 | 威海奥文工业科技有限公司 | Transverse magnetic flux C-type embedded stator permanent magnet brushless wind driven generator |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190326 |
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| WD01 | Invention patent application deemed withdrawn after publication |