CN109637791A - A kind of inverse Scott Transformer - Google Patents
A kind of inverse Scott Transformer Download PDFInfo
- Publication number
- CN109637791A CN109637791A CN201910088549.3A CN201910088549A CN109637791A CN 109637791 A CN109637791 A CN 109637791A CN 201910088549 A CN201910088549 A CN 201910088549A CN 109637791 A CN109637791 A CN 109637791A
- Authority
- CN
- China
- Prior art keywords
- winding
- layer
- becomes
- low
- coil
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 201
- 230000008859 change Effects 0.000 claims abstract description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 abstract description 6
- 230000017105 transposition Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 10
- 230000009466 transformation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
-
- 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
- H01F27/006—Details of transformers or inductances, in general with special arrangement or spacing of turns of the winding(s), e.g. to produce desired self-resonance
-
- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
This application provides a kind of inverse Scott Transformer, including bracket, the M being set on bracket becomes iron core and T becomes iron core；M becomes iron core and is externally provided with M change high-tension coil and M change low-voltage coil, and T change iron core is externally provided with T change high-tension coil and T becomes low-voltage coil；M becomes high-tension coil and connects with T change high-tension coil；The winding that M becomes low-voltage coil includes the first winding, the second winding, the tertiary winding and the 4th winding；The tertiary winding is wound in outside the first winding, outside the 4th winding technique and the second winding；First winding and the 4th winding around on the contrary, the second winding and the 4th winding around to opposite；First winding is connect with the 4th winding, and the tertiary winding is connect with the second winding；The number of turns of four windings is identical.The M winding for becoming low-voltage coil is divided into four sections, one section of two sections of windings of same phase carries out standard transposition on the outside of coil, and in first layer to the second layer for one section on the inside of coil, it is ensured that the two-phase winding length that M becomes in low-voltage coil is the same, to reach resistance balance.
Description
Technical field
The present invention relates to transformer technology field, especially a kind of inverse Scott Transformer.
Background technique
Electric railway traction power supply system mainly has direct-furnish mode and auto-transformer (Auto Transformer, AT)
Power supply mode.The shortcomings that direct-furnish mode is that power supply distance is short, electric split-phase quantity is more, power supply quality is poor；AT power supply mode can mention
High supply voltage extends power supply distance, reduces line loss, effectively weakens interference of the ac tracting network to communication line,
There are some advantages in big supplying charge face.
Inverse Scott Transformer is a kind of special transformer, can be by electric (two phases of the two-phase of power supply (abbreviation road network)
90 ° of potential difference single-phase) become three-phase electricity, i.e. traction institute's equipment side (abbreviation institute side), inverse Scott Transformer is by two lists
Phase transformer composition, is connected to the secondary of another transformer for the end of the low pressure winding (i.e. secondary winding) of a transformer
The center of winding can form the three-phase secondary winding of T-type connection.Two single-phase transformers being coupled in this way can be used as two-phase
Become the transformer of three-phase, the former the abbreviation T in this two transformers becomes, and the latter's abbreviation M becomes.
Inverse Scott Transformer is suitble to traction substation of electric railway, switching station, AT institute, subregion institute, road on railway
Net side tractive transformer 27.5kV voltage becomes 400V or 230V voltage.Interior lighting, control are provided for traction substation
The power supplys such as protection, blower, operating mechanism.
But with continuously improving for the development of urban transportation and technology, the electric current of inverse Scott Transformer output is wanted
Ask higher and higher, the prior art inverse Scott Transformer biggish to capacity is when M becomes low-voltage coil and uses mostly with conducting wire coiling
There can be M power transformation and hinder unbalanced problem, and then lead to three-phase current unbalance, not be able to satisfy power reguirements.
Summary of the invention
Goal of the invention of the invention is: for the prior art, there are M to become low-voltage coil using mostly with electric when conducting wire coiling
Unbalanced problem is hindered, a kind of inverse Scott Transformer is provided.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of inverse Scott Transformer, including bracket, the M being set on bracket becomes iron core and T becomes iron core；The M becomes iron
Core is externally provided with M and becomes high-tension coil and M change low-voltage coil, and the T becomes iron core and is externally provided with T change high-tension coil and T change low-voltage coil；Institute
M change high-tension coil is stated to connect with T change high-tension coil；The M become low-voltage coil winding include the first winding, second around
Group, the tertiary winding and the 4th winding；First winding technique becomes the upper semisection of iron core, second winding technique in the M
Become the lower semisection of iron core with the M, the tertiary winding is wound in outside first winding, the 4th winding technique with it is described
Outside second winding；First winding and the 4th winding around on the contrary, second winding and the 4th winding around to
On the contrary；One end of first winding is connect with one end of the 4th winding, one end of the tertiary winding and described second
One end of winding connects, and the other end of the other end of second winding and the 4th winding becomes low-voltage coil with the T
Connection；First winding, the second winding, the tertiary winding, the number of turns of the 4th winding are identical.
As a preferred solution of the present invention, it includes first layer winding, second layer winding and third layer that the T, which becomes low-voltage coil,
Winding, wherein first layer winding around to third layer winding around to identical, first layer winding around to second layer winding
Around on the contrary, the first layer winding and the second layer windings in series, the third layer winding and the second layer winding
D after N point ground connection after connection, second winding and the 4th winding connection is connect with the d ' of the third layer winding.
By the way that T change low-voltage coil is divided into three layers of winding, the junction of second layer winding and third layer winding is grounded, by third layer
The d point that the d ' and M of winding become low-voltage coil is connect, to change the amplitude and phase of the electric current of b phase and c phase.
As a preferred solution of the present invention, the T become first layer winding, second layer winding and the third layer of low-voltage coil around
The number of turns of group is identical.The identical balance to guarantee output electricity of the number of turns of three layers of winding.
As a preferred solution of the present invention, the turn ratio of first winding and first layer winding is 13:15.By this number of turns
Become low-voltage coil than coiling M and T becomes low-voltage coil and can make after inverse Scott Transformer transformation provided by the present application
Three-phase electricity amplitude is equally big, and the angle between three-phase electricity meets 120 ° of requirements.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: by the way that M is become low-voltage coil
Winding be divided into four sections, wherein one section of two sections of windings of same phase on the inside of coil one section arrived on the outside of coil, and in first layer
The second layer carries out standard transposition, and the two-phase winding length for ensuring that M becomes in low-voltage coil in this way is the same, to reach resistance balance.
Detailed description of the invention
Fig. 1 is inverse Scott Transformer wiring schematic diagram；
Fig. 2 be inverse Scott Transformer provided by the present application M become low-voltage coil around to schematic diagram one；
Fig. 3 be inverse Scott Transformer provided by the present application M become low-voltage coil around to schematic diagram two；
Fig. 4 be inverse Scott Transformer provided by the present application T become low-voltage coil around to schematic diagram；
Fig. 5 is the polar plot of inverse Scott Transformer three-phase electricity provided by the present application.
Marked in the figure: 22-M becomes low-voltage coil, the first winding of 221-, the second winding of 222-, the 223- tertiary winding, 224- the
Four windings, 32-T become low-voltage coil, 321- first layer winding, 322- second layer winding, 323- third layer winding.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of above-mentioned term.
As shown in Figures 2 to 4, inverse Scott Transformer provided by the present application, including bracket, the M being set on bracket become
Iron core and T become iron core；The M becomes iron core and is externally provided with M change high-tension coil and M change low-voltage coil 22, and the T becomes iron core and is externally provided with T
Become high-tension coil and T becomes low-voltage coil 32.The M becomes high-tension coil and connects with T change high-tension coil；The M is lower crimping
The winding of circle 22 includes the first winding 221, the second winding 222, the tertiary winding 223 and the 4th winding 224.
As shown in Figures 2 and 3, first winding 221 is wound in the upper semisection that the M becomes iron core, second winding
222 coilings and the M become the lower semisection of iron core, and the tertiary winding 223 is wound in outside first winding 221, and the described 4th
Outside 224 coiling of winding and second winding 222.First winding 221 is with the 4th winding 224 around on the contrary, described
Second winding 222 and the 4th winding 224 are around to opposite；One end of first winding 221 and the 4th winding 224
One end connection, one end of the tertiary winding 223 connect with one end of second winding 222, second winding 222 it is another
The other end of one end and the 4th winding 224 becomes low-voltage coil 32 with the T and connect；First winding 221, second around
Group 222, the tertiary winding 223, the number of turns of the 4th winding 224 are identical.It is arranged to one in one by the winding that M is become low-voltage coil 22
Outside, thus the resistance balance of b and c phase, thus b phase current and c phase current balance.
In order to enable the angle after transformer transformation between every two-phase electricity of three phase mains meets substation facilities
The winding for just needing to change T type transformer coil is needed to make three-phase electric equilibrium with this, as shown in figure 4, T change low-voltage coil 32 includes
Three layers of winding, the number of turns of every layer of winding be identical, wherein first layer around to third layer around to identical, second around
To with the second layer around on the contrary, the first layer winding 321 is connected with the second layer winding 322, the third layer winding
323 connect with the second layer winding 322.In order to enable the folder after transformer transformation between every two-phase electricity of three phase mains
Angle meets 120 °, by the second layer winding 322 and third layer after M the second winding 222 become and the series connection of the 4th winding 224 with T change
The connection of 323 junction of winding.In order to enable the current amplitude of the three-phase electricity after transformation is the same, therefore M becomes the institute of low-voltage coil 22
State that the first winding 221, the second winding 222, the tertiary winding 223, the number of turns of the 4th winding 224 are identical, M becomes the of low-voltage coil 22
One winding 221, the second winding 222, the tertiary winding 223, the 4th winding 224 and T become the first layer winding 321 of low-voltage coil 32
Turn ratio is 13:15.
Embodiment one
M becomes the coiling of the first winding 221, the second winding 222, the tertiary winding 223, the 4th winding 224 of low-voltage coil 22
The number of turns is 26 circles, the first winding 221 and the series connection of the 4th winding 224, and the first winding 221 is according to clockwise direction coiling, and the 4th
Winding 224 is according to counter clockwise direction coiling.Second winding 222 and the tertiary winding 223 are connected, and the second winding 222 is according to clockwise
Direction coiling, the tertiary winding 223 is according to counter clockwise direction coiling.Therefore M becomes the number of turns of b phase in low-voltage coil 22 as 52
The number of turns of circle, c phase is 52 circles, and by method for winding provided by the present application, b phase is as the winding perimeter of c phase, thus b
It is mutually identical with the resistance of c phase, the second winding 222 of the 4th winding 224 of b phase and c phase is connected, tie point d.
T become low-voltage coil 32 three layers of winding, most the inside one layer of winding, that is, first layer winding 321 according to clockwise direction to
Under around, second layer winding 322 according to counter clockwise direction upwards about first layer winding 321 and second layer winding 322 are connected, third
Layer winding 323 is consistent with 321 direction of winding of first layer winding, the number of turns of every layer of winding is 30 circles.Second winding 222 and third
The tie point N point of winding 223 is grounded, and the M d point for becoming low-voltage coil 22 is connect with the d ' of T change low-voltage coil 32, then first layer around
The outlet of group 321 is a phase, and the outlet of the first winding 221 is b phase, and the outlet of the tertiary winding 223 is c phase.
The M of transformer is become into high-tension coil and T becomes high-tension coil series connection, i.e., is connect the C in Fig. 1 with D, as shown in figure 5,
If M becomes high-tension coil and T and becomes the electric current of high-tension coil as IA, the angle of biphase current is 90 °, will be from the M of road network electricity side-draw
Become high-tension coil and T becomes high-tension coil series connection, after inverse Scott Transformer transformation provided by the present application, M becomes high-tension coil
For turn ratio with M change low-voltage coil 22 into K, T becomes the turn ratio of high-tension coil and T change low-voltage coil 32 as K, therefore passes through this Shen
The electric current of the side T low-voltage coil only passes through T change 32 first layer winding of low-voltage coil after the inverse Scott Transformer transformation that please be provided
321 and second layer winding 322 flow out electric current Ia, size isThe electric current of T change 32 third layer winding 323 of low-voltage coil
I”cWith I "bForBecome the electric current I ' of low-voltage coil 22 by McWith I 'bSize isI′cWith I 'bDirection
Opposite and and IaVector angle be 90 °, due to M become the b phase of low-voltage coil 22 and c phase connect with the N point that T becomes after formation zero it is electric
Site, IbEqual to I 'bWith I "bVector addition, IcEqual to I 'cWith I "cVector addition.Last IbAnd IcAmplitude be
I.e.
That is IbAmplitudeIcAmplitudeI after vector superposeda、
IbAnd IcBetween angle be 120 °, to meet the amplitude of three-phase electricity and phase angle balances.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of inverse Scott Transformer, which is characterized in that including bracket, the M being set on bracket becomes iron core and T becomes iron core；
The M becomes iron core and is externally provided with M change high-tension coil and M change low-voltage coil (22), and the T becomes iron core and is externally provided with T change high-tension coil and T
Become low-voltage coil (32)；The M becomes high-tension coil and connects with T change high-tension coil；The M becomes the winding of low-voltage coil (22)
Including the first winding (221), the second winding (222), the tertiary winding (223) and the 4th winding (224)；First winding
(221) it is wound in the upper semisection that the M becomes iron core, the second winding (222) coiling and the M become the lower semisection of iron core, institute
It states the tertiary winding (223) and is wound in first winding (221) outside, the 4th winding (224) coiling and second winding
(222) outside；First winding (221) and the 4th winding (224) are around on the contrary, second winding (222) and described
4th winding (224) is around to opposite；One end of first winding (221) is connect with one end of the 4th winding (224), institute
The one end for stating the tertiary winding (223) is connect with one end of second winding (222)；First winding (221), the second winding
(222), the tertiary winding (223), the number of turns of the 4th winding (224) are identical.
2. inverse Scott Transformer according to claim 1, which is characterized in that it includes that the T, which becomes low-voltage coil (32),
One layer of winding (321), second layer winding (322) and third layer winding (323), wherein first layer winding (321) around to
Three layers of winding (323) around to identical, first layer winding (321) around to second layer winding (322) around on the contrary, described
First layer winding (321) is connected with the second layer winding (322), the third layer winding (323) and the second layer winding
(322) tie point ground connection, the tie point of second winding (222) and the 4th winding (224) and the third layer around
Group (323) connection.
3. inverse Scott Transformer according to claim 2, which is characterized in that the T becomes the first of low-voltage coil (32)
Layer winding (321), second layer winding (322) are identical with the number of turns of third layer winding (323).
4. inverse Scott Transformer according to claim 3, which is characterized in that first winding (221) and first layer
The turn ratio of winding (321) is 13:15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088549.3A CN109637791A (en) | 2019-01-29 | 2019-01-29 | A kind of inverse Scott Transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088549.3A CN109637791A (en) | 2019-01-29 | 2019-01-29 | A kind of inverse Scott Transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109637791A true CN109637791A (en) | 2019-04-16 |
Family
ID=66062722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910088549.3A Pending CN109637791A (en) | 2019-01-29 | 2019-01-29 | A kind of inverse Scott Transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109637791A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917357A (en) * | 2019-11-29 | 2020-11-10 | 中车大同电力机车有限公司 | Traction transformer and locomotive power supply circuit |
| CN114758872A (en) * | 2022-05-12 | 2022-07-15 | 重庆科新电气有限公司 | 12-pulse traction rectification phase-shifting dry-type transformer for urban rail |
| CN114974839A (en) * | 2022-05-30 | 2022-08-30 | 重庆科新电气有限公司 | Special 27.5kV dry-type inverse Scott transformer for railway with increased angle ring |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300996A (en) * | 2016-08-24 | 2017-01-04 | 中铁第勘察设计院集团有限公司 | Transformator electric energy two or three phase inversion process |
| CN209216746U (en) * | 2019-01-29 | 2019-08-06 | 重庆科新电气有限公司 | A kind of inverse Scott Transformer |
-
2019
- 2019-01-29 CN CN201910088549.3A patent/CN109637791A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300996A (en) * | 2016-08-24 | 2017-01-04 | 中铁第勘察设计院集团有限公司 | Transformator electric energy two or three phase inversion process |
| CN209216746U (en) * | 2019-01-29 | 2019-08-06 | 重庆科新电气有限公司 | A kind of inverse Scott Transformer |
Non-Patent Citations (1)
| Title |
|---|
| 王世忠: "关于T形接法变压器的研究", 变压器, pages 19 - 24 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917357A (en) * | 2019-11-29 | 2020-11-10 | 中车大同电力机车有限公司 | Traction transformer and locomotive power supply circuit |
| CN111917357B (en) * | 2019-11-29 | 2022-02-11 | 中车大同电力机车有限公司 | Traction transformer and locomotive power supply circuit |
| CN114758872A (en) * | 2022-05-12 | 2022-07-15 | 重庆科新电气有限公司 | 12-pulse traction rectification phase-shifting dry-type transformer for urban rail |
| CN114974839A (en) * | 2022-05-30 | 2022-08-30 | 重庆科新电气有限公司 | Special 27.5kV dry-type inverse Scott transformer for railway with increased angle ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104465053B (en) | A kind of high-capacity three-phase combination type phase-shifting transformer | |
| JP2010520636A (en) | Transformer structure | |
| CN109637791A (en) | A kind of inverse Scott Transformer | |
| CN209216746U (en) | A kind of inverse Scott Transformer | |
| CN201504101U (en) | Integral grounding transformator and arc extinction coil device | |
| JP3662067B2 (en) | Inner iron type single winding single phase transformer | |
| KR102043260B1 (en) | Smart hybrid transformer with enhanced harmonic attenuation and large current phase recovery | |
| CN206921646U (en) | Loop construction and transformer | |
| CN104521129B (en) | Inverter in parallel on choke | |
| CN206564172U (en) | Multipurpose three-phase transformer | |
| CN205335051U (en) | Three -phase combination transformer | |
| JPS5923455B2 (en) | 3 winding transformer | |
| CN114171304A (en) | 500kV single-phase on-load tap changing autotransformer | |
| US3569883A (en) | Electrical winding | |
| EA025827B1 (en) | Three-phase balance-to-unbalance autotransformer (embodiments) | |
| JPS5821309A (en) | On-load tap-changing transformer | |
| JPH06310350A (en) | Heterocapacitance load three-phase scott connection transformer | |
| JPH0751782Y2 (en) | Shunt reactor | |
| JPS62205611A (en) | Transformer for three-phase, two-phase conversion | |
| AU710450B2 (en) | Balancer executed with Z-connected windings | |
| JPS5877214A (en) | Single-phase autotransformer | |
| JPS62137815A (en) | Stabilized winding type transformer for three-phase to two-phase conversion | |
| JPH09293620A (en) | Three winding transformer | |
| JPS6159651B2 (en) | ||
| JPS6259529B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |