CN106602756A - Three-phase core-type axial rotary converter for wireless energy transmission - Google Patents
Three-phase core-type axial rotary converter for wireless energy transmission Download PDFInfo
- Publication number
- CN106602756A CN106602756A CN201610892751.8A CN201610892751A CN106602756A CN 106602756 A CN106602756 A CN 106602756A CN 201610892751 A CN201610892751 A CN 201610892751A CN 106602756 A CN106602756 A CN 106602756A
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- Prior art keywords
- core
- rotor
- stator
- phase
- rotor core
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Classifications
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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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- 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)
- Synchronous Machinery (AREA)
Abstract
The invention relates to a three-phase core-type axial rotary converter for wireless energy transmission. The three-phase core-type axial rotary converter comprises a stator core and a rotor core, wherein the stator core and the rotor core adopt two coaxial and opposite cores, an interval serving as an air gap is formed between the stator core and the rotor core, a direction of the air gap between the stator core and the rotor core is coaxial with a motor rotating shaft, wire outgoing grooves are formed in the stator core and the rotor core, 6 three-phase stator coils are wound in the wire outgoing groove of the stator core, 6 three-phase rotor coils are wound on the rotor core, the stator coils and the rotor coils are in coaxial correspondence, the interior of the stator core is divided into 5 core columns by means of the 6 stator coils, and the interior of the rotor core is divided into 5 core columns by means of the 6 rotor coils. The rotary converter provided by the invention can effectively replace an electric brush structure without affecting the overall structure size of the motor, and can be maintained together with the motor body.
Description
Technical field
The invention belongs to three-phase generation apparatus field, is related to radio energy-transmitting technology, especially a kind of three-phase core type is wireless
Biography can use axial-rotation changer.
Background technology
It is known that rotary converter (being different from existing rotary transformer concept) is applied to motor and can substitute brush
And slip ring, reliability can be greatly improved, and without changing brush, can avoid safeguarding.It is increasingly deep with what is studied, especially
The application of electromagnetic simulation technique, current rotary converter also has many problems not have appropriate determining to study carefully.Such as, operating magnetic field flux is worked as
During by air gap between rotary converter rotor, edge effect is caused due to the scattering of magnetic flux, if rotary converter ferrum
The heart using the same Stamped steel type of motor is unshakable in one's determination or rewinding material, spuious magnetic flux can along stack direction vertically into steel disc in steel disc
Planar cause larger eddy-current loss, reduce efficiency of transmission, when transmission is high-power or using high frequency, seriously can cause
Air gap both sides iron core hot-spot and burn.And for example, if using Stamped steel type is unshakable in one's determination or rewinding material, in the closure of rotary converter
In magnetic circuit, in addition to requisite air gap between rotor, operating magnetic field flux will also in a certain direction by the gas between steel disc
Gap, this certainly will increased the no-load current and open circuit loss of rotary converter, reduce efficiency of transmission.Have again, work as rotation transformation
During device loaded work piece, if the leakage magnetic flux that rotor coil working electric current causes cannot absorb well, and vertically into steel
Piece, can also cause larger stray loss, reduce efficiency of transmission, and when transmitting high-power, problem is especially projected.
On the other hand, when heavy-duty motor is worked using brushgear, need what the daily timed patrol brush of workman was produced
Spark, assesses the danger classes of spark, and spark seriously can break down and maintenance down.Even if cremating within normal range,
The pollution that brush dust flies is produced due to rotating abrasion, and needs what periodically (several days to some months) charged for replacement or power failure more renewed
Same model brush, in a word maintenance workload is big.
It is general using three independent three-phase rotations according to three phase supply for the rotary converter for being applied to motor
Power converter cells are assembled, and three-phase is worked independently from each other, three three-phase rotary converter magnetic circuit independences, such rotary converter
Volume is larger, weight weight, and three three-phase rotary converters are detached, installs and fixed complicated, entirety during rotating operation
Stability is poor, assembly precision is required higher.
The content of the invention
It is an object of the invention to overcome prior art not enough, three-phase shares an iron core, there is provided one kind is from unloaded and negative
Carry the three-phase core type radio energy-transmitting axial-rotation changer that various aspects reduce rotary converter loss.
The technical solution used in the present invention is：
A kind of three-phase core type radio energy-transmitting axial-rotation changer, including stator core, rotor core, stator ferrum
The heart, rotor core adopt two coaxial, relative iron cores, and spacing is provided between stator core, rotor core as air gap,
Air gap direction and machine shaft between stator core, rotor core is radially arranged, and is distinguished in stator core and rotor core
Line outlet groove is formed with, the line outlet groove in stator core is wound with 6 stator coils, 6 level coils is wound with rotor core,
Stator coil and rotor coil are coaxially corresponded to, and stator core axial cross section is divided into 5 core limbs by 6 stator coils, and 6 turn
Stator core axial cross section is also divided into 5 core limbs by subcoil.
And, in each 5 core limbs in the stator core and rotor core, in three middle core limbs, per each
Core limb both sides by two stator coils or two rotor coil coilings, respectively as A, B, C three-phase windings, two ferrum in outside
Stem only has inner side coiling stator coil or rotor coil.
And, equal circumference is divided into several sectors on the section of the stator core and rotor core, and each sector is by growing
The equal electrical steel strip of degree makes radial main piece, is filled by the electrical steel strip of multiple decreasing dimensions in each sector,
The internal side diameter on iron core of each electrician's strip steel is supported using copper sheathing, and the outside diameter on iron core of each electrician's strip steel is adopted
Contractile restraint zone colligation, rotor core is coaxially packed on machine shaft.
And, the spacing between the stator core, rotor core is 0.3～0.5mm.
And, the stator core by screw rod be fixed on electric motor end cap medial wall or motor other fixed components on,
Fixed by coaxial a dead ring and machine shaft in stator core, the side position of rotor core one of close stator core, turned
Sub opposite side unshakable in one's determination is fixed by a coaxial shelves ring with machine shaft.
And, multiple fixed feet for being formed with screw are provided with the dead ring, retaining screw is also formed with dead ring.
Advantage of the present invention and good effect are：
The rotary converter that the present invention is provided effectively can substitute brush structure and not affect motor overall structure size, and
Motor body is safeguarded together.When rotary converter carries out AC energy using medium-high frequency to be transmitted, with more power density
Greatly, the advantage of efficiency high.
The three-phase core type radio energy-transmitting that the present invention is provided is changed with axial-rotation changer for construction unshakable in one's determination
Enter, present invention optimizes pattern unshakable in one's determination, the radial stack of thin electrical sheet differed using length of a film, this pattern unshakable in one's determination of one side
Make the edge flux at rotor air gap obtain good absorption, the local mistake of steel disc will not be caused because of edge effect
Heat, improves efficiency of transmission.On the other hand, this pattern unshakable in one's determination disclosure satisfy that operating magnetic field flux circulates in lamination plane, in rotation
In the closed magnetic circuit of changer, in addition to requisite air gap between rotor, operating magnetic field flux is no longer extra by other
Air gap, this lessens the no-load current and open circuit loss of rotary converter, further increase efficiency of transmission.Further, when rotation
During transformation parallel operation loaded work piece, this pattern unshakable in one's determination can well absorb the leakage magnetic flux that rotor coil working electric current causes
Into iron core, and do not cause larger stray loss, also improve efficiency of transmission.
In the present invention, air gap can accomplish 0.3～0.5mm or so.Overall (including securing member) the holding shaft symmetrical junction of device
Structure, ensure that the stability of rotation, prevent whirling vibration, and compact conformation.For motor substitutes changing for brush and slip ring
Make, without extra size is increased, can be with flexible arrangement.
Description of the drawings
Fig. 1 is the core construction schematic diagram (cross section structure) of the present invention；
Fig. 2 is the structural representation (cross section structure) of rotary converter in the present invention；
Fig. 3 is the dead ring structural representation of the present invention.
Specific embodiment
Below by accompanying drawing, in conjunction with specific embodiments the invention will be further described, and following examples are descriptive
, it is not determinate, it is impossible to which protection scope of the present invention is limited with this.
A kind of three-phase core type radio energy-transmitting axial-rotation changer, including stator core 4, rotor core 5, motor turn
Axle 13, lead 8, power supply 9, rotor coil 10 are shown in that equal circumference is divided into several on the section of Fig. 1, stator core and rotor core
Radial main piece is made in sector, each sector by the electrical steel strip 1 of equal length, is passed by multiple sizes in each sector
The electrical steel strip filling for subtracting, the internal side diameter on iron core of each electrician's strip steel supported using copper sheathing 2, each electrician's strip steel
Outside diameter on iron core is consolidated using contractile restraint zone (dilute valuable band is adopted in the present embodiment) 3 colligations, Jing vacuum epoxy casting
One entirety of chemical conversion, is so easy to the work magnetic for optimizing iron core close, and the thickness of the outer yoke (post) of iron core is less, and core section is by interior
Outwards it is gradually reduced, trapezoidal, corresponding coil section is optimized for from inside to outside inverted trapezoidal.In order to reduce edge effect, suitably
The air gap flux density hereinafter mentioned is reduced, the section at air gap is increased.
See Fig. 2, stator core, rotor core adopt two coaxial, relative iron cores, and thus, operating fields are to iron core
Component affecting in addition can be ignored, and be particularly suited for high frequency electric source excitation.0.3 is provided between stator core, rotor core
The spacing of～0.5mm is used as air gap.
Line outlet groove is formed respectively with stator core and rotor core, line outlet groove is the open channels on the outside of wire casing, is put into coil
Filled with epoxy resin cure afterwards, can prevent coil from releasing when rotated, the line outlet groove in stator core is wound with multiple
Stator coil 6, is wound with multiple rotor coils 7 in rotor core, and iron core respectively can wrap up primary, rotor coil,
For three-phase synchronous generator, stator coil connects 50Hz or medium-high frequency AC power supplies by lead, and rotor coil is connected by lead
Connect motor-spin-coil.
Stator coil and rotor coil are 6 and coaxial correspondence, and 6 stator coils split stator core axial cross section
Into 5 core limbs, wherein, in three middle core limbs, the both sides per post are by two stator coil windings respectively as A, B, C
Three-phase windings, two core limbs in outside only have inner side coiling stator coil, and 6 rotor coils divide rotor core axial cross section
Be cut into 5 core limbs, wherein, in three middle core limbs, the both sides per post by two rotor coil coilings respectively as A,
B, C three-phase windings, two core limbs of both sides only have inner side wound rotor coil.Axial cross section of the present invention is similar to that three-phase
Five-limb transformer core section.
Rotor core is coaxially packed on machine shaft, and stator core is fixed on electric motor end cap medial wall 12 by screw rod 11
In upper or motor other fixed components, the air gap direction and machine shaft between stator core, rotor core be in it is axially arranged, i.e.,
Air gap is vertical with machine shaft, and coaxial a dead ring 15 and motor is passed through on the side position of rotor core one of stator core
Rotating shaft is fixed, away from being fixed with machine shaft by a coaxial shelves ring 14 on the side position of rotor core one of stator core.
See Fig. 3, multiple fixed feet 16 for being formed with screw are provided with dead ring, retaining screw is also formed with dead ring
17。
Rotary converter itself magnetic circuit and circuit parameter can be designed according to different motor types and operating mode, be allowed to
Motor correlation properties are more matched, for example, can improve three-phase wound-rotor motor and start and speed adjusting performance, double-fed generator, same
The exciter field and strategy of step electromotor.
Claims (6)
1. a kind of three-phase core type radio energy-transmitting axial-rotation changer, including stator core, rotor core, stator core,
Rotor core adopts two coaxial, relative iron cores, and spacing is provided between stator core, rotor core as air gap, its
It is characterised by：Air gap direction and machine shaft between the stator core, rotor core in axially arranged, in stator core and
Rotor core is formed respectively with line outlet groove, and the line outlet groove in stator core is wound with 6 stator coils, the coiling in rotor core
There are 6 level coils, stator coil and rotor coil are coaxially corresponded to, and stator core axial cross section is divided into 5 by 6 stator coils
Stator core axial cross section is also divided into 5 core limbs by core limb, 6 rotor coils.
2. three-phase core type radio energy-transmitting axial-rotation changer according to claim 1, it is characterised in that：It is described fixed
In each 5 core limbs in sub unshakable in one's determination and rotor core, in three middle core limbs, the both sides per post are by two stator coils
Or two rotor coil coilings, respectively as A, B, C three-phase windings, two core limbs in outside only have inner side coiling stator coil
Or rotor coil.
3. three-phase core type radio energy-transmitting axial-rotation changer according to claim 2, it is characterised in that：It is described fixed
Circumference is divided into several sectors on the section of sub unshakable in one's determination and rotor core, and each sector is made by the electrical steel strip of equal length
Radial main piece, in each sector by multiple decreasing dimensions electrical steel strip fill, each electrician's strip steel in iron core
On internal side diameter supported using copper sheathing, the outside diameter on iron core of each electrician's strip steel adopts contractile restraint zone colligation,
Rotor core is coaxially packed on machine shaft.
4. three-phase core type radio energy-transmitting axial-rotation changer according to claim 3, it is characterised in that：It is described fixed
Spacing between sub unshakable in one's determination, rotor core is 0.3～0.5mm.
5. three-phase core type radio energy-transmitting axial-rotation changer according to claim 3, it is characterised in that：It is described fixed
It is sub unshakable in one's determination by screw rod be fixed on electric motor end cap medial wall or motor other fixed components on, stator core, near stator ferrum
Fixed with machine shaft by a coaxial dead ring on the side position of rotor core one of the heart, the opposite side of rotor core passes through one
Coaxial shelves ring is fixed with machine shaft.
6. three-phase core type radio energy-transmitting axial-rotation changer according to claim 3, it is characterised in that：It is described tight
Gu being provided with multiple fixed feet for being formed with screw on ring, retaining screw is also formed with dead ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892751.8A CN106602756B (en) | 2016-10-13 | 2016-10-13 | Axial rotation converter for three-phase iron core type wireless energy transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892751.8A CN106602756B (en) | 2016-10-13 | 2016-10-13 | Axial rotation converter for three-phase iron core type wireless energy transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106602756A true CN106602756A (en) | 2017-04-26 |
| CN106602756B CN106602756B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610892751.8A Active CN106602756B (en) | 2016-10-13 | 2016-10-13 | Axial rotation converter for three-phase iron core type wireless energy transmission |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458733A (en) * | 2003-06-12 | 2003-11-26 | 哈尔滨工业大学 | Directly driveng mixed reluctance motor |
| CN201263113Y (en) * | 2008-08-04 | 2009-06-24 | 中国矿业大学 | Single iron-core brushless synchronous motor |
| CN103715848A (en) * | 2013-09-30 | 2014-04-09 | 东南大学 | Axial magnetic field stator partitional flux switching memory motor |
| JP2014166078A (en) * | 2013-02-26 | 2014-09-08 | Aisin Aw Co Ltd | Controller of dc excited dynamo-electric machine |
| CN104716801A (en) * | 2015-03-11 | 2015-06-17 | 南京航空航天大学 | Mixed excitation synchronous motor with combined rotor cores internally provided with retained magnetic bridges |
| CN105811703A (en) * | 2016-03-18 | 2016-07-27 | 建湖圣康机电科技有限公司 | Permanent magnet electric welding and generator dual-use equipment |
-
2016
- 2016-10-13 CN CN201610892751.8A patent/CN106602756B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458733A (en) * | 2003-06-12 | 2003-11-26 | 哈尔滨工业大学 | Directly driveng mixed reluctance motor |
| CN201263113Y (en) * | 2008-08-04 | 2009-06-24 | 中国矿业大学 | Single iron-core brushless synchronous motor |
| JP2014166078A (en) * | 2013-02-26 | 2014-09-08 | Aisin Aw Co Ltd | Controller of dc excited dynamo-electric machine |
| CN103715848A (en) * | 2013-09-30 | 2014-04-09 | 东南大学 | Axial magnetic field stator partitional flux switching memory motor |
| CN104716801A (en) * | 2015-03-11 | 2015-06-17 | 南京航空航天大学 | Mixed excitation synchronous motor with combined rotor cores internally provided with retained magnetic bridges |
| CN105811703A (en) * | 2016-03-18 | 2016-07-27 | 建湖圣康机电科技有限公司 | Permanent magnet electric welding and generator dual-use equipment |
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| Publication number | Publication date |
|---|---|
| CN106602756B (en) | 2023-08-18 |
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