CN2454880Y - V/V connection conjugate type three-phase to two-phase transformer - Google Patents
V/V connection conjugate type three-phase to two-phase transformer Download PDFInfo
- Publication number
- CN2454880Y CN2454880Y CN 00259901 CN00259901U CN2454880Y CN 2454880 Y CN2454880 Y CN 2454880Y CN 00259901 CN00259901 CN 00259901 CN 00259901 U CN00259901 U CN 00259901U CN 2454880 Y CN2454880 Y CN 2454880Y
- Authority
- CN
- China
- Prior art keywords
- phase
- transformer
- transformers
- phase transformers
- capacity
- 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.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 230000009466 transformation Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model relates to a former limit symmetry triphase system, vice limit symmetry or asymmetric two-phase system's transformer: two independent single-phase transformers are wound on an iron yoke of a three-column, four-column or five-column iron core and then are connected in a V/V mode. The capacities of the two single-phase transformers can be equal or unequal; the voltage can be regulated on the primary side or on the secondary side. The transmission capacity of the transformer is equal to the structure capacity, and the transformer is particularly suitable for traction transformers with equal or unequal power supply characteristics of two-phase loads in traction of electrified railways. The transformer and the two single-phase transformers are equivalent in electromagnetic performance. The advantages are that: the capacity utilization coefficient can be improved, the volume is reduced, and the cost is reduced.
Description
The utility model belongs to design, the manufacturing technology field of transformer, is the transformer of a kind of former limit symmetry three-phase system, secondary symmetry or asymmetric diphase system specifically.
The transformer that general V/V connects is to adopt two single-phase transformers to connect to form, and perhaps the device body of two single-phase transformers is placed on to connect in the same fuel tank to form.The former consume material is many, manufacturing cost is high, floor space is big; Still there is the high problem of manufacturing cost in the latter.
The purpose of this utility model provides and a kind ofly can reduce that material expends and volume, and the V/V that reduces manufacturing cost connects conjugation-type three phase transformation two-phase transformers.
Structure of the present utility model is: be wound with two separate single-phase transformers on the iron yoke of one three post, four posts or five post iron cores, carry out V/V again and connect.The capacity of these two single-phase transformers can equate, also can be unequal.These two single-phase transformers can be distinguished pressure regulation separately: can be in the pressure regulation of former limit, and perhaps in the secondary pressure regulation, voltage regulating mode: (1) non-excitation pressure adjustment, (2) on-load voltage regulation.
Said structure can improve the transformer capacity usage factor, reduces the volume of transformer, reduces manufacturing cost.
The transmission capacity of this transformer equals structural capacity (being capacity usage factor η=1); Secondary two compatible amount can be identical, also can be different, thus bigger usage space is arranged, be specially adapted to the characteristics of power supply traction transformer that electric railway traction two phase loads equate or do not wait.
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 and 2 is a key wiring diagram of the present utility model.
Fig. 3 is current vector figure.
Fig. 4 is the electromotive force vectogram.
Fig. 5 is the structural representation of embodiment 1.
Fig. 6 is the structural representation of embodiment 2.
Operation principle: among Fig. 1 and 2, phase coil is cancelled in the low-pressure side, and promptly the load impedance of this phase is infinitely great, and two limit phase loads equate, i.e. Z
α=Z
β=Z
οIn addition, for simplicity, suppose that the Transformer Winding impedance equals zero, i.e. Z
k=0, in this case, can write out:
U
A=U
aU
B=U
bU
C=U
cI again
α=U
a/ Z
a=U
A/ Z
I
β=U
c/ Z
β=U
C/ Z=I
αe
J120 °I in addition
A=I
a=I
α
I
C=I
c=I
β=I
αe
J120 °The primary line electric current
I
A1=I
A=I
α
I
B1=-I
C-I
β=-I
αe
j120°=I
αe
-j60°
I
C1=I
C-I
A=I
β-I
α
=I
α(e
j120°-1)=3I
αe
j150°
Fig. 3 is current vector figure.Can find out obviously that by this figure the primary line electric current is asymmetric.
The mould of each electric current: I
A1=I
B1=I
A=I
C=I
α=I
c=I
a
=I
C1=3I
α
Output capacity: P
2=2U
αI
α
Input capacity: P
1=2U
AI
A1=2U
α.I
α=P
1
The tie lines on former and deputy limit should be by connecting by finding out ∮ in Fig. 4 vectogram shown in (seeing Fig. 4, Fig. 5)
In=∮
CB60 ° of (or ∮
AB120 °)
That is the magnetic flux of center pillar is not more than the magnetic flux of other post, but equates with it.Therefore column section equates with the both sides column section in.
The utility model and two single-phase transformers, and two single-phase transformer bodies are placed in the fuel tank and compare, their ratio of material dosage is as follows:
| Two single-phase transformers | Two single-phase transformer bodies are placed in the fuel tank | Adopt V/V to connect conjugation-type | |
| Silicon steel sheet | Be made as 1 | 1 | 0.96 |
| Copper cash | Be made as 1 | 1 | 0.9 |
| Transformer oil | Be made as 1 | 0.94 | 0.76 |
| Gross weight | Be made as 1 | 0.98 | 0.88 |
As seen, two single-phase transformer bodies are placed on the transformer formed in the fuel tank and compare with forming with two single-phase transformers, the material cost saving is not remarkable, and adopts the utility model V/V conjugation-type transformer will obtain bigger benefit.
Theory analysis is thought: conjugation-type V/V connects traction transformer, on electromagnetic performance, brings adverse effect for this transformer, and can think: this transformer and two single-phase transformers are equivalent on electromagnetic performance.
Embodiment 1: see Fig. 5, be wound with two separate single-phase transformers on the iron yoke of one three post iron core 1, carry out V/V again and connect.
Embodiment 2: see Fig. 6, be wound with two separate single-phase transformers on the iron yoke of one five post iron core 2, carry out V/V again and connect.3 is middle yoke among the figure, and 4 is return yoke.
Claims (5)
1, a kind of V/V connects conjugation-type three phase transformation two-phase transformers, it is characterized in that: be wound with two separate single-phase transformers on the iron yoke of one three post, four posts or five post iron cores, carry out V/V again and connect.
2, connect conjugation-type three phase transformation two-phase transformers as the said V/V of claim 1, it is characterized in that the capacity of two single-phase transformers equates.
3, connect conjugation-type three phase transformation two-phase transformers as the said V/V of claim 1, it is characterized in that the capacity of two single-phase transformers is unequal.
4, connect conjugation-type three phase transformation two-phase transformers as the said V/V of claim 1, it is characterized in that two single-phase transformers are separately respectively in the pressure regulation of former limit.
5, connect conjugation-type three phase transformation two-phase transformers as the said V/V of claim 1, it is characterized in that two single-phase transformers are separately respectively in the secondary pressure regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00259901 CN2454880Y (en) | 2000-12-19 | 2000-12-19 | V/V connection conjugate type three-phase to two-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00259901 CN2454880Y (en) | 2000-12-19 | 2000-12-19 | V/V connection conjugate type three-phase to two-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2454880Y true CN2454880Y (en) | 2001-10-17 |
Family
ID=33615818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00259901 Expired - Lifetime CN2454880Y (en) | 2000-12-19 | 2000-12-19 | V/V connection conjugate type three-phase to two-phase transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2454880Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1947659A1 (en) * | 2007-01-17 | 2008-07-23 | ABB Technology AG | Compact power transformer in V-V for electrical traction |
| CN102136356A (en) * | 2010-12-01 | 2011-07-27 | 四川英杰电气股份有限公司 | Three-phase five-column transformer |
| CN104246927A (en) * | 2012-04-06 | 2014-12-24 | 伊斯帕诺-絮扎公司 | Fixed three-phase to two-phase transformer with forced linked flux |
| CN108735481A (en) * | 2017-04-13 | 2018-11-02 | 株洲中车时代电气股份有限公司 | A kind of Vv connections tractive transformer |
-
2000
- 2000-12-19 CN CN 00259901 patent/CN2454880Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1947659A1 (en) * | 2007-01-17 | 2008-07-23 | ABB Technology AG | Compact power transformer in V-V for electrical traction |
| CN102136356A (en) * | 2010-12-01 | 2011-07-27 | 四川英杰电气股份有限公司 | Three-phase five-column transformer |
| CN104246927A (en) * | 2012-04-06 | 2014-12-24 | 伊斯帕诺-絮扎公司 | Fixed three-phase to two-phase transformer with forced linked flux |
| CN104246927B (en) * | 2012-04-06 | 2017-08-18 | 雷比诺电力*** | It is a kind of that there is the fixed transformer of three-phase two-phase for forcing connection magnetic flux |
| CN108735481A (en) * | 2017-04-13 | 2018-11-02 | 株洲中车时代电气股份有限公司 | A kind of Vv connections tractive transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Zhao Kun Designer after: Zhou Zhigang Designer after: Lu Shaoshan Designer before: Zhao Kun Designer before: Zhou Zhigang Designer before: Lu Shaoshan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: ZHAO KUN ZHOU ZHIGANG LU SHAOSHAN TO: ZHAO KUN ZHOU ZHIGANG LU SHAOSHAN |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20101219 Granted publication date: 20011017 |