CN104361981A - Multi-winding transformer - Google Patents
Multi-winding transformer Download PDFInfo
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- CN104361981A CN104361981A CN201410670731.7A CN201410670731A CN104361981A CN 104361981 A CN104361981 A CN 104361981A CN 201410670731 A CN201410670731 A CN 201410670731A CN 104361981 A CN104361981 A CN 104361981A
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Abstract
The invention provides a multi-winding transformer, which comprises an iron core, a primary coil and a plurality of secondary coils, wherein the secondary coils are distributed in the longitudinal direction of the iron core, and are vertically and symmetrically distributed into two groups from the middle of the iron core, in addition, the intervals of all the secondary coils are identical, the secondary coils in the upper group are sequentially the upper group first secondary coil, the upper group second secondary coil, to the upper group n-th secondary coil from the middle of the iron core to the outer side, the secondary coils in the lower group are sequentially the lower group first secondary coil, the lower group second secondary coil, to the lower group n-th secondary coil from the middle of the iron core to the outer side, the secondary coils in the upper group and the secondary coils in the lower group are connected in series according to the following correspondence relationship of one upper group first secondary coil, one lower group n-th secondary coil; the upper group second secondary coil, one lower group (n-1)th secondary coil, to the upper group n-th secondary coil and one lower group first secondary coil. According to the technical scheme, the problem of non-equal impedance of secondary windings of the existing multi-winding transformer is solved.
Description
Technical field
The present invention relates to a kind of power transformer, especially a kind of transformer of many secondary winding.
Background technology
The secondary coil 30 of current multi winding transformer distributes mostly as shown in Figure 1, by iron core 20 genesis analysis, wherein 10 is primary coil, under this distribution mode, the secondary winding impedance large near the leakage field of iron core 20 central part is little, the secondary winding impedance little near the leakage field at iron core 20 two ends is large, makes multiple secondary winding impedance skewness.Experimentally data are seen, the impedance contrast at middle part and two ends has three times.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of multi winding transformer, have employed new secondary coil distributed architecture, solve the problem that between multi winding transformer secondary winding, impedance does not wait in the past.The technical solution used in the present invention is:
A kind of multi winding transformer, comprises iron core and primary coil, also comprises the multiple secondary coils by iron core genesis analysis;
Multiple secondary coil is symmetrical up and down in the middle of iron core is two groups, and each secondary coil interval is identical;
Secondary coil in upper group is followed successively by upper group of the 1st secondary coil, upper group of the 2nd secondary coil laterally in the middle of iron core ... upper group of the n-th secondary coil;
Secondary coil in lower group is followed successively by lower group of the 1st secondary coil, lower group of the 2nd secondary coil laterally in the middle of iron core ... lower group of the n-th secondary coil;
Secondary coil in upper group and lower group is connected according to following corresponding relation:
Upper group of the 1st secondary coil-----lower group of the n-th secondary coil;
Upper group of the 2nd secondary coil-----lower group of the (n-1)th secondary coil;
……
Upper group of the n-th secondary coil-----lower group of the 1st secondary coil.
N be greater than 1 positive integer.
Further, secondary coil has six, forms three secondary winding.
Further, secondary coil has 12, forms six secondary winding.
The present invention adopts comparatively simple structure, is exceeding on the basis increasing manufacturing cost, solves the problem that between multi winding transformer winding, impedance does not wait in the past.
Accompanying drawing explanation
Fig. 1 is the structure composition schematic diagram of existing multi winding transformer.
Fig. 2 is embodiments of the invention one schematic diagrames.
Fig. 3 is embodiments of the invention two schematic diagrames.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
Embodiment one.The secondary winding that the present embodiment needs final acquisition three impedances equal.
As shown in Figure 2, multi winding transformer comprises iron core 20 and primary coil 10, also comprises 6 secondary coils 30 by iron core 20 genesis analysis.
These 6 secondary coils 30 are symmetrical up and down in the middle of iron core 20 is two groups, and each secondary coil 30 interval is identical.
Suppose that the leakage reactance near iron core 20 center is 1, the leakage reactance so from center to both sides is followed successively by 1,2 and 3.
Secondary coil in upper group is followed successively by upper group of the 1st secondary coil, upper group of the 2nd secondary coil, upper group of the 3rd secondary coil laterally in the middle of iron core, and numbering is followed successively by 3011,3012,3013;
Secondary coil in lower group is followed successively by lower group of the 1st secondary coil, lower group of the 2nd secondary coil, lower group of the 3rd secondary coil laterally in the middle of iron core, and numbering is followed successively by 3021,3022,3023;
Secondary coil in upper group and lower group is connected according to following corresponding relation, to form three secondary winding, calculates three secondary winding impedances separately simultaneously:
3011-3023: impedance 1+3=4;
3012-3022: impedance 2+2=4;
3013-3021: impedance 3+1=4;
So just can make Circuit Fault on Secondary Transformer and secondary winding impedance equal.
Embodiment two.The secondary winding that the present embodiment needs final acquisition six impedances equal.
As shown in Figure 3, multi winding transformer comprises iron core 20 and primary coil 10, also comprises 12 secondary coils 30 by iron core 20 genesis analysis.
These 12 secondary coils 30 are symmetrical up and down in the middle of iron core 20 is two groups, and each secondary coil 30 interval is identical.
Secondary coil in upper group is followed successively by upper group of the 1st secondary coil, upper group of the 2nd secondary coil laterally in the middle of iron core ... upper group of the 6th secondary coil, numbering is followed successively by 3011,3012 ... 3016;
Secondary coil in lower group is followed successively by lower group of the 1st secondary coil, lower group of the 2nd secondary coil laterally in the middle of iron core ... lower group of the 6th secondary coil, numbering is followed successively by 3021,3022 ... 3026;
Secondary coil in upper group and lower group is connected according to following corresponding relation, to form six secondary winding,
3011—3026；
3012—3025；
3013—3024；
……
3016—3021；
Because the interval of each secondary coil is identical, and upper and lower two groups symmetrical, the therefore impedance of last six secondary winding formed or equal in this embodiment.
It should be noted that, in embodiment one and two, the number of turns that each secondary coil is wound around iron core 20 is equal.And when needing to obtain output voltage identical with the secondary winding in background technology Fig. 1, in Fig. 2 and Fig. 3, the number of turns of single secondary coil is the half in Fig. 1.
Claims (3)
1. a multi winding transformer, comprises iron core (20) and primary coil (10), also comprises the multiple secondary coils (30) by iron core (20) genesis analysis, it is characterized in that:
Multiple secondary coil (30) is symmetrical up and down in the middle of iron core 20 is two groups, and each secondary coil (30) interval is identical;
Secondary coil in upper group is followed successively by upper group of the 1st secondary coil, upper group of the 2nd secondary coil laterally in the middle of iron core ... upper group of the n-th secondary coil;
Secondary coil in lower group is followed successively by lower group of the 1st secondary coil, lower group of the 2nd secondary coil laterally in the middle of iron core ... lower group of the n-th secondary coil;
Secondary coil in upper group and lower group is connected according to following corresponding relation:
Upper group of the 1st secondary coil-----lower group of the n-th secondary coil;
Upper group of the 2nd secondary coil-----lower group of the (n-1)th secondary coil;
……
Upper group of the n-th secondary coil-----lower group of the 1st secondary coil;
N be greater than 1 positive integer.
2. multi winding transformer as claimed in claim 1, is characterized in that:
Secondary coil (30) has six, forms three secondary winding.
3. multi winding transformer as claimed in claim 1, is characterized in that:
Secondary coil (30) has 12, forms six secondary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670731.7A CN104361981B (en) | 2014-11-20 | 2014-11-20 | Multiwinding transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670731.7A CN104361981B (en) | 2014-11-20 | 2014-11-20 | Multiwinding transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104361981A true CN104361981A (en) | 2015-02-18 |
| CN104361981B CN104361981B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410670731.7A Active CN104361981B (en) | 2014-11-20 | 2014-11-20 | Multiwinding transformer |
Country Status (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS259844B1 (en) * | 1986-11-27 | 1988-11-15 | Ivan Kubie | Connection of supply multi-winding transformer's current overload protection |
| CN201298428Y (en) * | 2008-10-15 | 2009-08-26 | 山东达驰电气有限公司 | Low-voltage winding connecting structure of single-phase amorphous iron-core transformer |
| KR101198031B1 (en) * | 2012-06-13 | 2012-11-06 | 안희석 | Electromagnetic field shielding transformer which has the separation type of multiple magnetic field |
| CN203325665U (en) * | 2013-05-08 | 2013-12-04 | 特变电工股份有限公司 | Frequency-conversion phase-shift rectifier transformer |
| CN204242780U (en) * | 2014-11-20 | 2015-04-01 | 日新电机（无锡）有限公司 | Multi winding transformer |
-
2014
- 2014-11-20 CN CN201410670731.7A patent/CN104361981B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS259844B1 (en) * | 1986-11-27 | 1988-11-15 | Ivan Kubie | Connection of supply multi-winding transformer's current overload protection |
| CN201298428Y (en) * | 2008-10-15 | 2009-08-26 | 山东达驰电气有限公司 | Low-voltage winding connecting structure of single-phase amorphous iron-core transformer |
| KR101198031B1 (en) * | 2012-06-13 | 2012-11-06 | 안희석 | Electromagnetic field shielding transformer which has the separation type of multiple magnetic field |
| CN203325665U (en) * | 2013-05-08 | 2013-12-04 | 特变电工股份有限公司 | Frequency-conversion phase-shift rectifier transformer |
| CN204242780U (en) * | 2014-11-20 | 2015-04-01 | 日新电机（无锡）有限公司 | Multi winding transformer |
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|---|---|
| CN104361981B (en) | 2016-09-14 |
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Inventor after: Yao Yifeng Inventor after: Chen Gang Inventor after: Liu Mengkai Inventor after: Liu Xiaohui Inventor after: Cao Feng Inventor after: Wang Chun Inventor after: Xue Guanjun Inventor after: Xu Shengyan Inventor after: Yao Yifeng, Chen Gang, Liu Mengkai, Liu Xiaohui, Cao Feng, Wang Chun, Zhang Xiaohui, Xu Shengyan Inventor before: Yao Yifeng Inventor before: Chen Gang Inventor before: Liu Mengkai Inventor before: Chen Xiaohui Inventor before: Cao Feng Inventor before: Wang Chun Inventor before: Xue Guanjun Inventor before: Xu Shengyan Inventor before: Yao Yifeng, Chen Gang, Liu Mengkai, Chen Xiaohui, Cao Feng, Wang Chun, Zhang Xiaohui, Xu Shengyan |
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