CN113948287A - Inverse scott wound core transformer - Google Patents
Inverse scott wound core transformer Download PDFInfo
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- CN113948287A CN113948287A CN202111352800.6A CN202111352800A CN113948287A CN 113948287 A CN113948287 A CN 113948287A CN 202111352800 A CN202111352800 A CN 202111352800A CN 113948287 A CN113948287 A CN 113948287A
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- wound core
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- 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
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
- H01F27/2455—Magnetic cores made from sheets, e.g. grain-oriented using bent laminations
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- 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
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- 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
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- 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
- H01F27/33—Arrangements for noise damping
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- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses an inverse Scott wound core transformer which comprises a wound core column group A, a wound core column group B, a wound core column group C and a wound core column group D, wherein a first winding M and a second winding M are concentrically wound on the wound core column group A, a third winding T and a fourth winding T are concentrically wound on the wound core column group D, the wound core column group A, the wound core column group B, the first winding M and the second winding M form an M transformer, the wound core column group C, the wound core column group D, the third winding T and the fourth winding T form a T transformer, the first winding M and the third winding T are low-voltage windings, the second winding M and the fourth winding T are high-voltage windings, and the M transformer and the T transformer form the inverse Scott wound core transformer through internal connection. In actual use, the aims of reducing no-load loss and noise, reducing the appearance volume and saving materials can be achieved, and the usage of silicon steel sheets can be reduced by about 15% compared with the usage of the traditional laminated iron core by adopting a wound iron core structure.
Description
Technical Field
The invention relates to a transformer for an inverse Scott connection wound core, in particular to an inverse Scott wound core transformer.
Background
AT present, the core structure of the inverse Scott transformer for AT power supply in China mostly adopts a laminated core. The conventional laminated iron core has the disadvantages of large consumption of silicon steel sheets, time consumption and labor consumption. When the transformer core lamination is processed and the core is stacked, the burr size of the lamination and the lap joint size at the corner of the lamination can directly influence the no-load loss of the transformer. The iron core structure adopts a wound iron core structure form, so that the using amount of silicon steel sheets can be obviously reduced, the no-load loss is reduced by about 30 percent, and the no-load current and the noise of the transformer are obviously reduced. The popularization and the application of the inverse Scott wound core transformer accord with the national policy of energy conservation and emission reduction.
Disclosure of Invention
The invention provides an inverse Scott wound core transformer aiming at the problems in the prior art, which is applied to achieve the purposes of reducing no-load loss and noise, reducing the appearance volume and saving materials.
The invention is realized by the following technical scheme:
the utility model provides a contrary scott wound core transformer, includes wound core post group A, wound core post group B, wound core post group C, wound core post group D, the concentric winding of wound core post group A has first winding M, second winding M, the concentric winding of wound core post group D has third winding T, fourth winding T wound core post group A, wound core post group B, first winding M, second winding M constitution M becomes, wound core post group C, wound core post group D, third winding T, fourth winding T constitution T become, first winding M, third winding T are the low voltage winding, second winding M, fourth winding T are the high voltage winding, M becomes and becomes to form contrary scott wound core transformer through inside wiring with T.
Further, the iron cores arranged on the wound iron core column group A, the wound iron core column group B, the wound iron core column group C and the wound iron core column group D are of a circular-section single-frame closed structure formed by winding silicon steel sheets.
Furthermore, the M-transformer and the T-transformer are two independent single-phase wound core transformers.
Furthermore, the first winding M of the M transformer is wound on the wound core column group A, the second winding M is wound on the first winding M, no winding is wound on the wound core column group B, the third winding T of the T transformer is wound on the wound core column group D, the fourth winding T is wound on the third winding T, and no winding is wound on the wound core column group C.
The second winding m and the fourth winding t are multilayer cylindrical windings, the starting end of the winding m of the second winding is led out to serve as a B phase of the wire inlet end of the reverse scott wound core transformer, the tail end of the winding m of the second winding is connected with the tail end of the fourth winding t in series to serve as a C phase of the wire inlet end of the reverse scott wound core transformer, and the starting end of the fourth winding t is led out to serve as an A phase of the wire inlet end of the reverse scott wound core transformer.
Furthermore, the first winding m and the third winding t are multilayer cylindrical windings, the starting end of the winding m of the first winding is directly led out to serve as a b phase of a wire outlet end of the reverse scott wound core transformer, the tail end of the winding m of the first winding is directly led out to serve as a c phase of the wire outlet end of the reverse scott wound core transformer, the leading end of the winding m of the first winding and the tail end of the winding t of the third winding are connected in series to serve as a midpoint S of the reverse scott wound core transformer, the starting end of the winding t of the third winding is directly led out to serve as a phase of the wire outlet end of the reverse scott wound core transformer, and the winding two-thirds of the winding t of the third winding is led out to serve as an o phase of the wire outlet end of the reverse scott wound core transformer.
At present, when the lamination of the transformer core is processed and the core is stacked, the burr size of the lamination and the lap joint size at the corner of the lamination can directly influence the no-load loss of the transformer, therefore, the application provides a reverse scott wound core transformer, which comprises a wound core column group A, a wound core column group B, a wound core column group C and a wound core column group D, wherein a first winding m and a second winding m are concentrically wound on the wound core column group A, the winding iron core column group D is concentrically wound with a third winding T and a fourth winding T, the winding iron core column group A, the winding iron core column group B, the first winding M and the second winding M form an M transformer, the winding iron core column group C, the winding iron core column group D, the third winding T and the fourth winding T form a T transformer, the first winding M and the third winding T are low-voltage windings, the second winding M and the fourth winding T are high-voltage windings, and the M transformer and the T transformer form an inverse Scott winding iron core transformer through internal wiring. The reverse scott connection wound core transformer has a wound core structure. The wound iron core body is a single-frame closed structure with a circular section formed by winding silicon steel sheets, and the wound iron core with the single-frame closed structure is formed by two main columns and an upper iron yoke and a lower iron yoke. The sectional areas of the iron core main column and the iron yoke are equal, and the external dimensions of the sectional areas are the same. The reverse scott wound-core transformer is formed by two single-phase wound-core transformers through internal wiring according to a certain wiring principle. The high-low voltage winding of each single-phase transformer is wound on one column, and the winding sequence is that the low-voltage winding and the high-voltage winding are sequentially arranged from inside to outside from the core column.
In summary, the following beneficial effects of the invention are:
the reverse scott wound core transformer achieves the purposes of reducing no-load loss and noise, reducing the appearance volume and saving materials, and adopts a wound core structure, so that the consumption of silicon steel sheets can be reduced by about 15 percent compared with the consumption of the traditional laminated core; the no-load loss is reduced by about 30 percent; the noise of the transformer can be reduced by about 4-10 dB; the method is suitable for the traction substation of the high-speed and heavy-duty railway with the AT power supply mode and Scott connection.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a top view of the structure of the present invention.
Reference numbers and corresponding part names in the drawings:
1-iron-core-winding column group A, 2-iron-core-winding column group B, 3-iron-core-winding column group C, 4-iron-core-winding column group D, 5-M change, 6-T change, 7-first winding M, 8-second winding M, 9-third winding T, 10-fourth winding T.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in fig. 1-2, the inverse scott wound core transformer includes a wound core column group a1, a wound core column group B2, a wound core column group C3, and a wound core column group D4, wherein a first winding M7 and a second winding M8 are concentrically wound on the wound core column group a1, a third winding T9 and a fourth winding T10 are concentrically wound on the wound core column group D4, the wound core column group a1, the wound core column group B2, the first winding M7 and the second winding M8 form an M-transformer 5, the wound core column group C3, the wound core column group D4, the third winding T9 and the fourth winding T10 form a T-transformer 6, the first winding M7 and the third winding T9 form a low-voltage winding, the second winding M8 and the fourth winding T10 form a high-voltage winding, and the M-transformer and T-transformer are internally formed by the inverse scott-transformer.
Specifically, the iron cores arranged on the wound iron core column group A1, the wound iron core column group B2, the wound iron core column group C3 and the wound iron core column group D4 are of a circular-section single-frame closed structure formed by winding silicon steel sheets.
Specifically, the M-to-5 and the T-to-6 are two independent single-phase wound core transformers.
Specifically, the first winding M7 of the M transformer 5 is wound on a wound core column group A1, the second winding M8 is wound on the first winding M7, no winding is wound on a wound core column group B2, the third winding T9 of the T transformer 6 is wound on a wound core column group D4, the fourth winding T10 is wound on the third winding T9, and no winding is wound on a wound core column group C3.
Specifically, the second winding m8 and the fourth winding t10 are multilayer cylindrical windings, the start of the second winding m8 is led out to serve as a B phase of the inlet end of the inverse scott wound core transformer, the tail of the second winding m8 and the tail of the fourth winding t10 are connected in series to serve as a C phase of the inlet end of the inverse scott wound core transformer, and the start of the fourth winding t10 is led out to serve as an A phase of the inlet end of the inverse scott wound core transformer.
The first winding m7 and the third winding t9 are multilayer cylindrical windings, the head of the first winding m7 is directly led out to serve as a b phase of an outlet end of the reverse scott wound core transformer, the tail of the first winding m7 is directly led out to serve as a c phase of the outlet end of the reverse scott wound core transformer, a leading-out head of the first winding m7 with one-half turn number is connected with the tail of the third winding t9 in series to serve as a midpoint S of the reverse scott wound core transformer, the head of the third winding t9 is directly led out to serve as an a phase of the outlet end of the reverse scott wound core transformer, and an o phase of the outlet end of the reverse scott wound core transformer is led out at two-thirds turn number of the third winding t 9.
The second winding m8 and the fourth winding t10 of the high-voltage winding of the reverse scott connection wound core transformer are multilayer cylindrical windings, the starting end of the winding m8 of the second winding is directly led out to be used as a B phase of the inlet end of the reverse scott connection wound core transformer, the tail end of the winding m is connected with the tail end of the winding t10 in series to be used as a C phase of the inlet end of the reverse scott connection wound core transformer, and the starting end of the winding t10 is led out to be used as an A phase of the inlet end of the reverse scott connection wound core transformer. The first winding m7 and the third winding t9 of the low-voltage winding of the inverse Scott wound core transformer are multilayer cylindrical windings, the beginning of the winding m7 of the first winding is directly led out to be used as a b-phase of a leading-out end of the inverse Scott wound core transformer, and the end of the winding is directly led out to be used as a c-phase of the leading-out end of the inverse Scott wound core transformer. The leading-out terminal of the first winding m7 at one-half turn of the winding is connected with the tail end of the third winding t9 in series to be used as the middle point S of the inverse Scott wound core transformer. The start of the winding of the third winding t9 is directly led out to be used as the a phase of the leading-out end of the reverse scott-type wound core transformer, and the lead of the winding of the third winding t9 with two thirds of turns is led out to be used as the o phase of the leading-out end of the reverse scott-type wound core transformer.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a contrary scott wound core transformer, its characterized in that, includes wound core post group A (1), wound core post group B (2), wound core post group C (3), wound core post group D (4), it has first winding M (7), second winding M (8) to wind on wound core post group A (1) with one heart, it has third winding T (9), fourth winding T (10) to wind on wound core post group D (4) with one heart, wound core post group A (1), wound core post group B (2), first winding M (7), second winding M (8) are constituteed M and are become (5), wound core post group C (3), wound core post group D (4), third winding T (9), fourth winding T (10) are constituteed T and become (6), first winding M (7), third winding T (9) are low voltage winding, second winding M (8) have group D (9), wound core post group D (4), third winding T (9), fourth winding T (10) become (6), first winding M (7), third winding T (9) are low voltage winding, The fourth winding T (10) is a high-voltage winding, and the M transformer (5) and the T transformer (6) form an inverse Scott wound core transformer through internal wiring.
2. The inverse scott wound-core transformer according to claim 1, wherein the iron cores arranged on the wound-core column group a (1), the wound-core column group B (2), the wound-core column group C (3) and the wound-core column group D (4) are of a closed structure with a circular cross section and a single frame formed by winding silicon steel sheets.
3. An inverse scott wound core transformer according to claim 1, characterized in that the M-transformer (5) and the T-transformer (6) are each two separate single phase wound core transformers.
4. The inverse scott wound core transformer according to claim 1, wherein the first winding M (7) of the M transformer (5) is wound on the wound core leg group a (1), the second winding M (8) is wound on the first winding M (7), no winding is wound on the wound core leg group B (2), the third winding T (9) of the T transformer (6) is wound on the wound core leg group D (4), the fourth winding T (10) is wound on the third winding T (9), and no winding is wound on the wound core leg group C (3).
5. The inverse scott wound core transformer according to claim 1, wherein the second winding m (8) and the fourth winding t (10) are multi-layer cylindrical windings, the start of the winding of the second winding m (8) leads out the B phase as the inlet end of the inverse scott wound core transformer, the end of the winding of the second winding m (8) and the end of the winding t (10) are connected in series and then serve as the C phase of the inlet end of the inverse scott wound core transformer, and the start of the winding t (10) leads out and then serve as the a phase of the inlet end of the inverse scott wound core transformer.
6. The inverse Scott wound core transformer according to claim 1, the first winding m (7) and the third winding t (9) are multilayer cylindrical windings, the start of the winding of the first winding m (7) is directly led out to serve as a b phase of an outlet end of the reverse scott wound core transformer, the tail of the winding of the first winding m (7) is directly led out to serve as a c phase of the outlet end of the reverse scott wound core transformer, the leading-out end of the winding of the first winding m (7) with one-half turn number is connected with the tail of the winding of the third winding t (9) in series to serve as a midpoint S of the reverse scott wound core transformer, the start of the winding of the third winding t (9) is directly led out to serve as an a phase of the outlet end of the reverse scott wound core transformer, and the o phase of the outlet end of the reverse scott wound core transformer is led out at two-thirds turn number of the winding of the third winding t (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111352800.6A CN113948287A (en) | 2021-11-16 | 2021-11-16 | Inverse scott wound core transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111352800.6A CN113948287A (en) | 2021-11-16 | 2021-11-16 | Inverse scott wound core transformer |
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| Publication Number | Publication Date |
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| CN113948287A true CN113948287A (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111352800.6A Pending CN113948287A (en) | 2021-11-16 | 2021-11-16 | Inverse scott wound core transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2021
- 2021-11-16 CN CN202111352800.6A patent/CN113948287A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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