CN203118728U - Magnetic integrated shell-type traction transformer - Google Patents
Magnetic integrated shell-type traction transformer Download PDFInfo
- Publication number
- CN203118728U CN203118728U CN 201220651673 CN201220651673U CN203118728U CN 203118728 U CN203118728 U CN 203118728U CN 201220651673 CN201220651673 CN 201220651673 CN 201220651673 U CN201220651673 U CN 201220651673U CN 203118728 U CN203118728 U CN 203118728U
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Abstract
The utility model discloses a magnetic integrated shell-type traction transformer. The transformer comprises a main iron core, a high-voltage winding and a traction winding, wherein the high-voltage winding and the traction winding are wound on the main iron core in an alternating structure, a plurality of sections of gap iron cores which are made of silicon steel sheets are arranged in a gap between the high-voltage winding and the traction winding, the lamination direction of the gap iron core is consistent with a leakage flux flow path between the two windings, the width of the gap iron core is consistent with the width of a yoke, the section number of the gap iron cores and a gap between every two sections of the gap iron cores are calculated according to the requirement of a real system on the short-circuit impedance percentage of the shell-type traction transformer. The segmented gap iron cores are arranged in the gap between the high-voltage winding and the traction winding, a low-reluctance flux flow path is provided for the leakage flux between the high-voltage winding and the traction winding, the leakage impedance of the transformer is increased, the copper loss and the vortex loss of the transformer can be reduced, and the operation efficiency of the transformer can be improved.
Description
Technical field
The utility model relates to a kind of traction transformer, particularly the integrated shell type traction transformer of a kind of magnetic.
Background technology
Along with the development of industries such as China's electric railway, city rail traction and boats and ships, it all relates to power supply system of electric traction.Be subjected to the requirement of industry particularity, the space that whole equipment is reserved to power supply system of electric traction is subjected to strict restriction, and then the equipment that requires tractive power supply system to match has functions such as volume is little, electromagnetic interference is little, thus give relevant supporting power equipment design, manufacture enterprise and have higher requirement.
Traction transformer is widely used in the power supply system of electric traction of above-mentioned field, and it is all bigger with volume to take up room in whole system, its electromagnetic interference is also bigger, if do not take effective control measure, very easily other supporting Power Electronic Circuit, control circuit are produced serious electromagnetic interference.Technical barrier at above-mentioned existence, one side is by the thought of system integration design, reduce the volume of power supply system of electric traction by modularization, compactedness design, but also can bring simultaneously a series of other technical barriers, for example: electromagnetic interference is big, stray loss is big, local appearance is overheated etc.
Summary of the invention
Deficiencies such as traditional traction transformer electromagnetic interference is big in order to solve, stray loss big, volume is bigger the utility model proposes the integrated shell type traction transformer of magnetic that a kind of electromagnetic interference is little, stray loss is little, volume is little.
The technical scheme that its technical problem that solves the utility model adopts is: comprise main iron core, high pressure winding, traction winding, described high pressure winding adopts the alternating expression structure on main iron core with the traction winding, is placed with several sections air-gap iron cores in the gap between high pressure winding and the traction winding.
Further, above-mentioned air-gap iron core is made of silicon steel sheet.
Further, the circulation path of leakage flux is consistent between above-mentioned air-gap iron core lamination direction and two windings.
Further, the width of above-mentioned air-gap iron core and iron yoke width are consistent.
The beneficial effects of the utility model are: the utility model adopts the shell-type structure, and the air-gap iron core that the layout number between the winding section is built up by silicon steel sheet at transformer high-voltage winding and traction, the gap iron core provides the path of a low magnetic resistance for stray field between winding, be conducive to retrain the circulation path of leakage flux, reduce stray field at the degree of divergence of transformer inside, under the same structure size condition, can improve the leakage inductance of this transformer on the one hand; Also can reduce the stray loss of transformer hardware on the other hand, thereby improve the running environment of transformer, reduce it to the electromagnetic interference of other device.
Below in conjunction with accompanying drawing the utility model is further specified.
Description of drawings
Fig. 1 is front view of the present utility model.
Among the figure: 1. main iron core, 2. air-gap iron core, 3. high pressure winding, 4. traction winding.
Embodiment
Referring to Fig. 1, the utility model comprises main iron core 1, high pressure winding 3, traction winding 4, it is characterized in that: high pressure winding 3 adopts the alternating expression structure on main iron core 1 with traction winding 4, be placed with the several sections air-gap iron cores 2 that are made of silicon steel sheet in the gap between high pressure winding 3 and the traction winding 4, the gap between the hop count of described air-gap iron core 2 and section and the section need be calculated the requirement of shell type traction transformer short-circuit impedance percentage according to real system and be tried to achieve.
The lamination direction of air-gap iron core 2 is just along the stray field direction between high pressure winding 3 and the traction winding 4, the stray field that exists between high pressure winding 3 and the traction winding 4 of air-gap iron core 2 provides a low reluctance path, thereby effectively reduces the magnetic resistance of leakage magnetic circuit.
The width of the length of air-gap iron core 2 and main iron core 1 iron yoke is consistent between winding, can effectively reduce the leakage flux of the part winding that is positioned at the iron core both sides, thereby reduces the eddy current loss that it produces at the deep-fried twisted dough sticks wall.
The utility model is by arranging the several sections air-gap iron cores that are made of silicon steel sheet in the gap between alternating expression high pressure winding and traction winding, for the leakage flux between winding provides magnetic resistance less circulation path, thereby guarantee under the same size condition, to have bigger leakage inductance; And under the identical leakage inductance condition, have the small construction size; By the core structure of high magnetic permeability, effectively leakage flux is constrained in the winding space, can effectively reduce the eddy current loss of winding, the spuious eddy current loss of interior metal structural member.
Claims (4)
1. integrated shell type traction transformer of magnetic, comprise main iron core, high pressure winding, traction winding, it is characterized in that: the high pressure winding adopts the alternating expression structure on main iron core with the traction winding, is placed with several sections air-gap iron cores in the gap between high pressure winding and the traction winding.
2. the integrated shell type traction transformer of magnetic according to claim 1, it is characterized in that: described air-gap iron core is made of silicon steel sheet.
3. the integrated shell type traction transformer of magnetic according to claim 1 and 2, it is characterized in that: the circulation path of leakage flux is consistent between described air-gap iron core lamination direction and two windings.
4. the integrated shell type traction transformer of magnetic according to claim 1 and 2, it is characterized in that: the width of described air-gap iron core and iron yoke width are consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220651673 CN203118728U (en) | 2012-11-30 | 2012-11-30 | Magnetic integrated shell-type traction transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220651673 CN203118728U (en) | 2012-11-30 | 2012-11-30 | Magnetic integrated shell-type traction transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203118728U true CN203118728U (en) | 2013-08-07 |
Family
ID=48899051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220651673 Expired - Fee Related CN203118728U (en) | 2012-11-30 | 2012-11-30 | Magnetic integrated shell-type traction transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203118728U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146694A (en) * | 2017-07-06 | 2017-09-08 | 华侨大学 | A kind of structure for being used to improve Industrial Frequency Transformer short-circuit impedance |
| CN113611494A (en) * | 2021-08-11 | 2021-11-05 | 保定天威集团特变电气有限公司 | Structure of high-impedance transformer |
-
2012
- 2012-11-30 CN CN 201220651673 patent/CN203118728U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146694A (en) * | 2017-07-06 | 2017-09-08 | 华侨大学 | A kind of structure for being used to improve Industrial Frequency Transformer short-circuit impedance |
| CN113611494A (en) * | 2021-08-11 | 2021-11-05 | 保定天威集团特变电气有限公司 | Structure of high-impedance transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20171130 |