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Concentric type axial four-division traction transformer and realization method thereof

A traction transformer, four-split technology, applied in transformers, fixed transformers, transformer/inductor cores, etc., can solve the problems that transformers cannot meet, achieve low manufacturing cost, small footprint, limit short-circuit current and eliminate harmonics Significant effect of filtering

Active Publication Date: 2013-06-12
株洲市科达电机技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, existing transformers cannot meet the above requirements.

Method used

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  • Concentric type axial four-division traction transformer and realization method thereof
  • Concentric type axial four-division traction transformer and realization method thereof
  • Concentric type axial four-division traction transformer and realization method thereof

Examples

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Embodiment 1

[0032] Such as Figure 1-2 As shown, a concentric axial four-split traction transformer includes an iron core and a winding. The iron core includes at least two single iron core columns; each single iron core column is provided with 4 sets (that is, 4 layers) The windings arranged along the axial direction of the single iron core column, each set of windings is composed of the primary winding on the inner side and the secondary winding on the outer side; and the 4 primary windings are connected in parallel.

[0033] There are 2 single iron core columns. At this time, the concentric axial four-split traction transformer is a single-phase transformer, and the left and right column coils of each layer are connected in series or in parallel to form a separate primary side winding, forming a total of 4 pairs of primary and secondary windings.

[0034] There are 3 single iron core columns. At this time, the concentric axial four-split traction transformer is a three-phase transform...

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PUM

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Abstract

The invention discloses a concentric type axial four-division traction transformer and a realization method thereof, wherein a full-division structure that four primary windings of a transformer respectively correspond to a secondary winding is adopted; a three-phase concentric type axial four-division traction transformer is provided with 12 primary windings and 12 secondary windings; and all the primary windings and the secondary windings are axially arranged. The transformer has the following characteristics that firstly, as the four windings are in the full-division structure, the influence among each secondary winding is relatively small, the decoupling performance is relatively good, and each secondary winding can work independently as well as can work synchronously; secondly, the transformer is suitable for being manufactured into a high-impedance transformer which plays significant roles on limiting short-circuit currents, eliminating resonance and filtering; thirdly, compared with four separate transformers or two double-division transformers, the concentric type axial four-division traction transformer has the advantages of small size, small occupied space and low manufacturing cost.

Description

technical field [0001] The invention relates to a concentric axial four-split traction transformer and a realization method thereof. Background technique [0002] Common single-phase traction transformers such as image 3 shown. [0003] With the current development of various technologies, especially the development of variable flow technology. Many higher requirements are put forward for the transformer. For example, it requires that a transformer can supply power to several loads at the same time, and requires that the loads cannot interfere with each other. Even if one load is faulty and isolated, other loads can still work normally. In addition, in some occasions, it also requires the transformer to have a higher impedance to achieve the effect of limiting short-circuit current and harmonic elimination filtering, and it is better to decouple the load windings under high impedance conditions, and the impedance between the windings is unbalanced. The degree should be sm...

Claims

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Application Information

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IPC IPC(8): H01F30/06H01F27/24H01F27/30H01F27/28
Inventor 钱旭李霞
Owner 株洲市科达电机技术有限公司
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