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Transformer core

A technology of transformers and three-phase transformers, which is applied in the field of transformers, can solve problems such as complex processing, and achieve the effects of reduced no-load loss, small magnetic resistance, and convenient processing

Inactive Publication Date: 2017-02-22
王永法
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the three-phase three-dimensional wound core is that compared with the above-mentioned planar lamination type and planar wound core type core, under the same circumstances, the material is less and the loss is lower, but its disadvantage is that the processing is more complicated

Method used

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Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 with figure 2 As shown, the transformer core in this embodiment includes the first winding core 1, the second winding core 2 and the strip-shaped laminated core 3, and the first winding core 1, the second winding core 2 and the strip-shaped laminated core 3 are all made of high conductivity magnetic material. The first wound core 1 and the second wound core 2 are C-shaped wound cores with the same shape and opposite open ends, and the strip-shaped laminated core 3 is arranged between the open end of the first wound core 1 and the open end of the second wound core 2 It is fixed with the first roll core 1 and the second roll core 2 to form a Japanese-shaped three-phase transformer core, and the lamination direction of the strip laminated core 3 is perpendicular to the curling of the first roll core 1 and the second roll core 2 direction; at the same time, the above-mentioned three-phase transformer core forms a Japanese-shaped structure on the plane wh...

Embodiment 2

[0039] Such as Figure 9 to Figure 11As shown, the first wound core 1, the second wound core 2 and the strip laminated core 3 in this embodiment are cores made of oriented magnetically permeable materials, and the strip laminated core 3 and the first wound core 1 An oblique butt joint structure is formed between the second wound iron core 2 and the second winding core 2 . In this embodiment, silicon copper sheet is preferably used as the oriented magnetically permeable material. In addition, the part where each layer of laminations of the strip-shaped laminated core 3 is obliquely butted with the first roll core 1 and the second roll core 2 is triangular, and the two butt joint sides of the triangular structure are between the first roll core 1 and the second roll core. The outermost wound core sheets of the core 2 are connected to each other.

Embodiment 3

[0041] Such as Figure 12 to Figure 14 As shown, the first winding core 1, the second winding core 2 and the strip laminated core 3 of this embodiment are also cores made of oriented magnetically conductive materials, the difference from the second embodiment is that in this embodiment The part of each lamination sheet of the bar-shaped laminated core 3 and the first winding core 1 and the second winding core 2 is in the form of an isosceles trapezoid, and the long side of the isosceles trapezoid corresponds to the first winding core 1 and the second winding core. The innermost wound core sheet of the wound core 2 , the short sides of the isosceles trapezoid correspond to the outermost wound core sheets of the first wound core 1 and the second wound core 2 .

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PUM

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Abstract

The invention discloses a transformer core. The transformer core comprises a first winding iron core, a second winding iron core and a strip-shaped laminated iron core, wherein the strip-shaped laminated iron core is arranged between the open ends of the first and second winding iron cores and fixed to the first and second winding iron cores to form a 'day' word three-phase transformer core; the superposition direction of the laminated piece of the strip-shaped laminated iron core is vertical to the winding direction of the first and second iron cores; meanwhile the iron core of the three-phase transformer forms into a 'day' word structure on the plane containing the laminated piece. The advantage of the transformer core lies in that the magnetic force lines of the first and second winding iron cores can form a junction point on the strip-shaped laminated iron core, and magnetic paths can be fully mixed and closed in the same-layer laminated piece of the strip-shaped laminated iron core, so that the no-load loss of the transformer iron core is greatly reduced due to low magnetic reluctance, meanwhile the iron core material is saved after the winding iron core structure is used, besides the transformer core is convenient to process and realize large-scale mechanization production, the demand for labor is reduced, and the energy saving and emission reduction direction can be met.

Description

technical field [0001] The invention relates to a transformer, in particular to a transformer core. Background technique [0002] The transformer core is an important part of the power transformer. The existing transformer cores can be roughly divided into several structures such as the planar lamination type, the planar wound core type and the three-phase three-dimensional wound core type. [0003] Among them, the planar laminated core has an oblique seam structure, and the number of oblique seams is 6. When the orientation of the magnetic force line and the core sheet is consistent, the magnetic resistance is the smallest. As the angle between the magnetic force line and the orientation of the core sheet increases, Magnetic resistance also increases. Since there are many seams in the existing oblique seam structure, the loss and noise generated are greater, and the noise and loss of the corresponding transformer are also relatively large. In addition, compared with the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/26H01F27/245
Inventor 王永法
Owner 王永法