CN105742000A - Non-closed magnetic circuit electric reactor - Google Patents
Non-closed magnetic circuit electric reactor Download PDFInfo
- Publication number
- CN105742000A CN105742000A CN201610310834.1A CN201610310834A CN105742000A CN 105742000 A CN105742000 A CN 105742000A CN 201610310834 A CN201610310834 A CN 201610310834A CN 105742000 A CN105742000 A CN 105742000A
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- CN
- China
- Prior art keywords
- magnetic circuit
- reactor
- closed magnetic
- magnetic
- circuit reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses a non-closed magnetic circuit electric reactor, which comprises a hollow coil component and a magnetic cylinder body arranged in a cavity of the coil component; the magnetic cylinder body is matched with the cavity of the coil component; the magnetic cylinder body comprises at least four magnetic cylinders; all the magnetic cylinders are arranged in sequence in a stack-up manner; every two adjacent magnetic cylinders are partitioned through an air gap plate. According to the electric reactor, by utilizing an unsaturation characteristic of an existing hollow electric reactor, a magnetic material is put in the central cavity of the hollow electric reactor creatively to form a non-closed magnetic circuit, and thus, not only can the electric reactor not be disabled with increase of current, but also a specific inductance-current curve required by a traction converter can be met very ideally; the non-closed magnetic circuit electric reactor has perfect direct current bias performance.
Description
Technical field
The present invention relates to tramcar technical field, more particularly, it relates to a kind of non-closed magnetic
Road reactor, this reactor is for the traction drive current transformer of urban track traffic car.
Background technology
Along with greatly developing of urban rail transit technology, present urban tram becomes prominent and flies suddenly
Setting out the gesture of exhibition, this tramcar is not by online power taking now, but station station quick charge,
As the performance quality of the traction drive current transformer reactor of these railcar most critical parts, directly
Whether it is related to the efficiency of this current transformer, safety and stability.
Traditional iron core reactor (magnetic material containing closed-loop path), under electrical condition,
Along with the increase of electric current, inductance value in effective range, inductance value be basically unchanged (i.e. inductance-
Current curve is a straight line), but when electric current reaches a certain value, inductance value can suddenly become 0,
I.e. reactor lost efficacy；
Conventional hollow reactor (without magnetic material), under electrical condition, along with electric current
Increasing, inductance value is basically unchanged (i.e. inductance-current curve is a straight line), but inductance will not
Lost efficacy, and track drawing current transformer requirement reactor performance meets specific curves, and (inductance value was with electricity
Stream increases and reduces, but when electric current is more than certain value, and inductance value stably can be more than 0 a certain
It is worth constant), that is direct current biasing poor performance and noise are greatly, easy saturated inefficacy.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that
A kind of non-closed magnetic circuit reactor, this reactor utilizes the unsaturated special of existing air reactor
Property, in air reactor center cavity, creatively insert magnetic material composition non-closed magnetic
Road, not only reactor will not lose efficacy along with electric current increases reactor, and can ideal expiring
Specific inductance-current curve needed for foot traction convertor, has perfect direct current biasing performance.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of non-closed magnetic
Road reactor, including hollow solenoid component and be arranged on solenoid component hollow in magnetic posts
Body；Described magnetic cylinder matches with the cavity of solenoid component；Described magnetic cylinder includes at least
Four magnetic posts, each magnetic posts is cascading, and passes through between two adjacent magnetic posts
Air gap plate separates.
Non-closed magnetic circuit reactor of the present invention, wherein, the quantity of described magnetic posts is N
Individual, the quantity of described air gap plate is N-1.
Non-closed magnetic circuit reactor of the present invention, wherein, the periphery of described magnetic posts sets
It is equipped with jagged vent passages.The effect of this vent passages has be beneficially magnetic cylinder at two: one
And the ventilation and heat between solenoid component；Two is due to the cavity shape of magnetic cylinder Yu solenoid component
Shape matches, and this vent passages is easy to magnetic cylinder and is assembled in solenoid component.
Non-closed magnetic circuit reactor of the present invention, wherein, described magnetic posts be stalloy or
One in ferrite.
Non-closed magnetic circuit reactor of the present invention, wherein, described air gap plate is at the two of plate
The potsherd of epoxy resin it is coated with on face.
Non-closed magnetic circuit reactor of the present invention, wherein, the thickness of described air gap plate is
0.1-10mm。
Non-closed magnetic circuit reactor of the present invention, wherein, described solenoid component includes hollow
Skeleton, multilamellar are around the enamel-covered wire being located on hollow backbone.
Non-closed magnetic circuit reactor of the present invention, wherein, described hollow backbone include internal ring,
And outer shroud that internal ring is arranged concentrically and radial distribution air channel bar between internal ring and outer shroud；Often
The layer concentric winding of enamel-covered wire, and successively from internal ring winding in outer shroud；Each air channel bar is arranged
Between adjacent two layers enamel-covered wire.The effect of this air channel bar is to be spaced adjacent two layers enamel-covered wire
Distance, another one effect is the air channel for providing heat transmission between every layer of enamel-covered wire, thus
Improve the service behaviour of reactor.
Non-closed magnetic circuit reactor of the present invention, wherein, described internal ring, outer shroud and air channel
Bar is the most one-body molded.
Non-closed magnetic circuit reactor of the present invention, wherein, described hollow backbone is exhausted by heatproof
Edge material is made.
Implement the non-closed magnetic circuit reactor of the present invention, have the advantages that
(1) present invention utilizes the unsaturated characteristic of existing air reactor, creatively at sky
Core device center cavity is inserted magnetic cylinder composition non-closed magnetic circuit, the reactor of this structure
Not only will not lose efficacy along with electric current increases reactor, and ideal can meet traction current transformation
(i.e. inductance value increases with electric current and reduces specific inductance-current curve needed for device, but works as electricity
When stream is more than certain value, sensibility reciprocal can stable a certain be more than 0 value constant), have the most directly
Stream offset capability；Additionally, the reactor of this structure can not only solve conventional reactor the most saturated,
Direct current biasing poor performance, moreover it is possible to the problems such as solution noise height, inefficiency, cost performance are low, should
Invention is applied in reactor design, can solve this particular needs of track current transformer for a long time
Ask, and, this invention can also be generalized in current electric car converter；
(2) it addition, by arranging radial distribution air channel bar between internal ring and outer shroud,
The effect of this air channel bar is to be spaced the distance of adjacent two layers enamel-covered wire, and another one effect is
For providing the air channel of heat transmission between every layer of enamel-covered wire, thus improve the service behaviour of reactor；
(3) it is provided with jagged vent passages on the periphery of each described magnetic posts, if
After dry magnetic posts and air gap plate stack gradually, form the ventilation on several vertical directions and lead to
Road, the effect of this vent passages has be beneficially logical magnetic cylinder and solenoid component between at two: one
Wind dispels the heat；Two is owing to the cavity shape of magnetic cylinder with solenoid component matches, and this ventilation is led to
Road is easy to magnetic cylinder and is assembled in solenoid component.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the closed magnetic circuit that the magnetic material assembly of reactor in prior art encloses
Structural representation；
Fig. 2 is the structural representation of the non-closed magnetic circuit reactor of present pre-ferred embodiments；
Fig. 3 is the structural representation of magnetic cylinder；
Wherein, 1, solenoid component；101, hollow backbone；1011, internal ring；1012, outer shroud；
1013, air channel bar；102, enamel-covered wire；2, magnetic cylinder；201, magnetic posts；202, gas
Gap plate；203, vent passages.
Detailed description of the invention
Below, in conjunction with accompanying drawing and detailed description of the invention, the present invention is described further:
As Figure 2-3, a kind of non-closed magnetic circuit reactor, including hollow solenoid component 1
Be arranged on solenoid component hollow in magnetic cylinder 2；Described magnetic cylinder and solenoid component
Cavity matches；Described magnetic cylinder includes that at least four magnetic posts 201, each magnetic posts depend on
Secondary stacking is arranged, and is separated by air gap plate 202 between two adjacent magnetic posts.Air gap plate
Effect be used to adjust the size of inductance value, the magnetic cylinder number of plies number and air gap plate
Thickness depends on the needs of electric current-inductance curve needed for different converter.
The present invention utilizes the unsaturated characteristic of existing air reactor, creatively in hollow reactance
Device center cavity is inserted magnetic cylinder composition non-closed magnetic circuit, the reactor of this structure not only with
Electric current to increase reactor and will not lose efficacy, and needed for ideal meeting traction convertor
Specific inductance-current curve (i.e. inductance value increases with electric current and reduces, but is more than when electric current
During certain value, sensibility reciprocal can stable a certain be more than 0 value constant), there is perfect direct current biasing
Performance；Additionally, the reactor of this structure can not only solve, conventional reactor is the most saturated, direct current is inclined
Put poor performance, moreover it is possible to the problems such as solution noise height, inefficiency, cost performance are low, this invention should
It is used in reactor design, this particular demands of track current transformer for a long time can be solved, and
And, this invention can also be generalized in current electric car converter.
And the magnetic material assembly of reactor is by least four magnetic material post in prior art
Body joins end to end and encloses, and forms the closed magnetic circuit of one or several tetragon, as shown in Figure 1.
This conventional reactor is during energising uses, and its inductance value varies less along with electric current increases,
But when electric current is more than a certain value, inductance value can be mutated into 0 (direct current biasing poor performance), i.e.
Reactor moment lost efficacy, and in locomotive traction electric power system, there is the probability of current break,
If this sudden change exceeds reactor current scope of design, circuit harmonizing wave will be to other components and parts of circuit
Causing mortal injury, then cause current transformer to damage, locomotive traction lost efficacy.
Described solenoid component 1 includes that hollow backbone 101, multilamellar are around the paint being located on hollow backbone
Envelope curve 102.Those skilled in the art can select according to current transformer watt level, selects enough
The enamel-covered wire coiling solenoid component of conductive area.Described hollow backbone is by heatproof insulating material system
Become, such as epoxy resin.Described hollow backbone 101 includes that internal ring 1011 and internal ring are concentric and sets
The outer shroud 1012 put and the radial distribution air channel bar 1013 between internal ring and outer shroud；Described
Internal ring, outer shroud and air channel bar are the most one-body molded.Every layer of concentric winding of enamel-covered wire, and successively from interior
The outer winding of ring is in outer shroud；Each air channel bar is arranged between adjacent two layers enamel-covered wire.This air channel
The effect of bar is to be spaced the distance of adjacent two layers enamel-covered wire, and another one effect is as every layer
The air channel of heat transmission is provided between enamel-covered wire, thus improves the service behaviour of reactor.
Described magnetic posts is the one in stalloy or ferrite.Described air gap plate is at the two of plate
The potsherd of epoxy resin it is coated with on face.The manufacturing process of described magnetic body is as follows: by magnetic
Property post is in layer stacked into Fig. 3 such as and shows, adds potsherd as air gap plate between each layer, and
And, the two sides equal uniform application epoxide-resin glue of air gap plate, then with pressing machine by above-mentioned ferrum
Stem stem is pressed into center pillar, to epoxide-resin glue dried the knot of magnetic body shown such as Fig. 3
Structure.
Magnetic posts and the number of air gap plate and respective thickness are by those skilled in the art's root
Calculate according to the size determining sensibility reciprocal and obtain, it is preferable that the thickness of described air gap plate is 0.1-10mm.
In the non-closed magnetic circuit reactor of present pre-ferred embodiments, the quantity of described magnetic posts is 4
Individual, the quantity of described air gap plate is 3；The thickness of the most each magnetic posts is 10mm, gas
The thickness of gap plate is 0.6mm.Certainly, in this embodiment magnetic posts and air gap plate number and
Respective thickness is only signal effect, not the final invention ancestor of the true representations present invention
Purport.
Preferably, the periphery of each described magnetic posts is provided with jagged vent passages
203.The shape of each air gap plate and the mating shapes of the cross section of magnetic posts, four magnetic
After post and air gap plate stack gradually, forming the vent passages on several vertical directions, this leads to
Wind passage is evenly distributed on the periphery of magnetic cylinder.The effect of this vent passages has
It is beneficial to the ventilation and heat between magnetic cylinder and solenoid component；Two is due to magnetic cylinder and line bag
The cavity shape of assembly matches, and this vent passages is easy to magnetic cylinder and is assembled to solenoid component
In.
The operation principle of non-closed magnetic circuit reactor of the present invention is as follows: two ends not closed magnetic circuit part
It is air, 2 sections of big air gaps can be equivalent to；This reactor be exactly between conventional hollow reactor and
A kind of Novel reactor between tradition iron core reactor；Because of the introducing of center magnetic post, ratio is identical
The air reactor inductance value of size is much larger, and inductance value can increase with electric current and reduce；Because of two
The existence of the big air gap of end opening, the Amplitude Ratio iron core reactance that inductance value increases with electric current and reduces
Device is much smaller, and the most saturated, i.e. inductance value will not drop to zero.
The non-closed magnetic circuit reactor of this structure compared with prior art has the advantages that
(1) specific currents inductance curve, air core inductor of the prior art or iron core electricity are met
Sense is under electrical condition, and inductance value is basically unchanged, especially iron core reactor, when electric current increases
During to a certain value, inductance value can suddenly drop to 0 i.e. reactor and lose efficacy, and air reactor will not lose
Effect, but inductance value is a constant straight line, it is impossible to meet the characteristic of such as track current transformer etc
Need, and the inductance value of the non-closed magnetic circuit reactor of the present invention can increase along with electric current, inductance
Amount slowly declines, but when electric current is more than a certain value, inductance value no longer declines, and will not become
The 0. characteristic needs fully meeting track current transformer.
(2) whole efficiency improves 15%, and noise significantly reduces, stable and reliable in work.This
Bright non-closed magnetic circuit reactor is owing to possessing the characteristic of (1), and magnetic circuit loss significantly reduces,
Thus improve whole efficiency, due to will not with electric current increase and inductance value become 0 that is inductance lost efficacy
Cause noise.
It will be apparent to those skilled in the art that can technical scheme as described above and structure
Think, make other various corresponding changes and deformation, and all these changes and deformation
Within all should belonging to the protection domain of the claims in the present invention.
Claims (10)
1. a non-closed magnetic circuit reactor, it is characterised in that include hollow solenoid component
Be arranged on solenoid component hollow in magnetic cylinder；Described magnetic cylinder and the sky of solenoid component
Chamber matches；Described magnetic cylinder includes that at least four magnetic posts, each magnetic posts stack gradually
Arrange, separated by air gap plate between two adjacent magnetic posts.
Non-closed magnetic circuit reactor the most according to claim 1, it is characterised in that institute
The quantity stating magnetic posts is N number of, and the quantity of described air gap plate is N-1.
Non-closed magnetic circuit reactor the most according to claim 1, it is characterised in that institute
State and on the periphery of magnetic posts, be provided with jagged vent passages.
Non-closed magnetic circuit reactor the most according to claim 1, it is characterised in that institute
Stating magnetic posts is the one in stalloy or ferrite.
Non-closed magnetic circuit reactor the most according to claim 1, it is characterised in that institute
Stating air gap plate is the potsherd being coated with epoxy resin on the two sides of plate.
Non-closed magnetic circuit reactor the most according to claim 1, it is characterised in that institute
The thickness stating air gap plate is 0.1-10mm.
Non-closed magnetic circuit reactor the most according to claim 1, it is characterised in that institute
State solenoid component and include that hollow backbone, multilamellar are around the enamel-covered wire being located on hollow backbone.
Non-closed magnetic circuit reactor the most according to claim 7, it is characterised in that institute
State outer shroud that hollow backbone includes that internal ring and internal ring be arranged concentrically and radial distribution internal ring with
Air channel bar between outer shroud；Every layer of concentric winding of enamel-covered wire, and successively from internal ring winding to outward
In ring；Each air channel bar is arranged between adjacent two layers enamel-covered wire.
Non-closed magnetic circuit reactor the most according to claim 8, it is characterised in that institute
State internal ring, outer shroud and air channel bar the most one-body molded.
Non-closed magnetic circuit reactor the most according to claim 7, it is characterised in that institute
State hollow backbone to be made up of heatproof insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310834.1A CN105742000A (en) | 2016-05-11 | 2016-05-11 | Non-closed magnetic circuit electric reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310834.1A CN105742000A (en) | 2016-05-11 | 2016-05-11 | Non-closed magnetic circuit electric reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105742000A true CN105742000A (en) | 2016-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610310834.1A Pending CN105742000A (en) | 2016-05-11 | 2016-05-11 | Non-closed magnetic circuit electric reactor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208268Y (en) * | 1994-12-08 | 1995-09-20 | 瞿安 | Electric reactor with stepless adjustable inductance |
| CN2293890Y (en) * | 1997-06-24 | 1998-10-07 | 西安希望电气有限责任公司 | Half-core dry type reactor |
| CN2421720Y (en) * | 2000-04-29 | 2001-02-28 | 顺德特种变压器厂 | Non-iron yoke core type reactor |
| CN201270181Y (en) * | 2008-09-25 | 2009-07-08 | 陕西合容电力设备有限公司 | Half-core dry type reactor |
| US20110121933A1 (en) * | 2007-08-20 | 2011-05-26 | Tebian Electric Apparatus Stock Co., Ltd. | Leading-Out Device of Reactor Coil and Iron Core Reactor Comprising It |
| CN205595155U (en) * | 2016-05-11 | 2016-09-21 | 深圳市英大科特技术有限公司 | Non - closed magnetic circuit reactor |
-
2016
- 2016-05-11 CN CN201610310834.1A patent/CN105742000A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2208268Y (en) * | 1994-12-08 | 1995-09-20 | 瞿安 | Electric reactor with stepless adjustable inductance |
| CN2293890Y (en) * | 1997-06-24 | 1998-10-07 | 西安希望电气有限责任公司 | Half-core dry type reactor |
| CN2421720Y (en) * | 2000-04-29 | 2001-02-28 | 顺德特种变压器厂 | Non-iron yoke core type reactor |
| US20110121933A1 (en) * | 2007-08-20 | 2011-05-26 | Tebian Electric Apparatus Stock Co., Ltd. | Leading-Out Device of Reactor Coil and Iron Core Reactor Comprising It |
| CN201270181Y (en) * | 2008-09-25 | 2009-07-08 | 陕西合容电力设备有限公司 | Half-core dry type reactor |
| CN205595155U (en) * | 2016-05-11 | 2016-09-21 | 深圳市英大科特技术有限公司 | Non - closed magnetic circuit reactor |
Non-Patent Citations (1)
| Title |
|---|
| 国网山西省电力公司: "《特高压交流变电运维检修技能培训教材 》", 31 December 2014, 中国水利水电出版社 * |
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Application publication date: 20160706 |
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