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Transformer iron core structure with auxiliary iron yoke

A technology of transformers and iron yokes, which is used in the manufacture of inductors/transformers/magnets, transformers/inductor cores, electrical components, etc. Incomplete distribution, etc., to achieve reasonable leakage flux, eliminate local overheating, and enhance short-circuit resistance.

Inactive Publication Date: 2009-11-04
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is: the distribution of the magnetic circuit is not complete, and the control of the leakage flux of the winding is insufficient. When the leakage flux density is large, the eddy current loss of the winding and the stray loss of the structural parts are large, and there is a possibility of local overheating. ; It is necessary to take measures in the structure of the clamp and the body to provide compensatory support for the part of the body leaking outside the stem, and the stability of the body is insufficient

Method used

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  • Transformer iron core structure with auxiliary iron yoke
  • Transformer iron core structure with auxiliary iron yoke
  • Transformer iron core structure with auxiliary iron yoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 As shown, in the horizontal extension direction of the upper iron yoke 1 and the horizontal extension direction of the lower iron yoke 2 on the side of the core column 4 of the transformer core set winding of the single-phase two-column single-column structure, the auxiliary iron yoke 5 is added, and the upper and lower yokes are correspondingly extended The length of the iron core clamp increases the effective support of the transformer body.

Embodiment 2

[0017] Such as figure 2 As shown, for a transformer core with a single-phase two-column and two-core column structure with two-column windings operating independently, two-column windings in parallel or in series, the horizontal extension direction of the upper iron yoke 1 and the horizontal extension of the lower iron yoke 2 on the outside of the two core columns 4 In both directions, the auxiliary iron yoke 5 is added, and the length of the upper and lower iron core clips is correspondingly extended to increase the effective support of the transformer body.

Embodiment 3

[0019] Such as image 3 As shown, for a transformer core with a three-phase three-column structure, the auxiliary iron yoke 5 is added in the horizontal extension direction of the upper iron yoke 1 and the horizontal extension direction of the lower iron yoke 2 outside the two outer core columns 4, and the length of the iron core clamp is correspondingly extended , Increase the effective support of the transformer body.

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Abstract

The invention discloses a transformer iron core structure with an auxiliary iron yoke, which comprises a frame-shaped structure consisting of an upper iron yoke, a lower iron yoke, and a core column sleeved with a winding or a side column not sleeved with the winding. The transformer iron core structure is characterized in that the auxiliary iron yoke consisting of the extending part of an iron core plate is arranged in the horizontal extending direction of the upper iron yoke on the outer side of the core column of the frame-shaped structure and in the horizontal extending direction of the lower iron yoke. By adopting the structure, the distribution of magnetic circuits of the transformer can be improved, the leakage magnetic flux outside the iron core is reduced, the eddy current loss of the winding and the stray loss of the structure are reduced, the effective support strength of a device body is increased, and the running economic performance and the safe reliability of products are improved.

Description

technical field [0001] The invention relates to a transformer core structure suitable for single-phase two-column and three-phase three-column with auxiliary iron yoke. Background technique [0002] In the transformer core structure, the traditional single-phase two-column and three-phase three-column frame structures no longer have core pieces protruding from the outside, and are widely used. The disadvantage of this structure is: the distribution of the magnetic circuit is not complete, and the control of the leakage flux of the winding is insufficient. When the leakage flux density is large, the eddy current loss of the winding and the stray loss of the structural parts are large, and there is a possibility of local overheating. ; It is necessary to take measures in the structure of the clamp and the body to provide compensatory support for the part of the body leaking outside the stem, and the stability of the body is insufficient. Contents of the invention [0003] T...

Claims

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Application Information

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IPC IPC(8): H01F27/24H01F41/02
Inventor 宓传龙韩晓东吉强孟丽坤顾向峰闫少毅
Owner CHINA XD ELECTRIC CO LTD
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