Three-dimensional roll transformer iron core and transformer

Abstract

The invention belongs to the technical field of transformers, and particularly relates to a three-dimensional roll transformer iron core. The three-dimensional roll transformer iron core comprises three single-frame iron cores of the same structure, each single-frame iron core comprises iron core columns which are in bilateral symmetry and iron yokes which are in longitudinal symmetry, the iron core columns which are in bilateral symmetry and the iron yokes which are in longitudinal symmetry jointly define a rectangular window, each single-frame iron core is formed by winding strips, and every two adjacent layers of strips are wound in a staggered mode. The strip is wound into a single-frame iron core, the two side edges of the single-frame iron core are cambered surfaces, the inner side of an iron core column of each single-frame iron core is an inclined surface, each single-frame iron core is connected with the other two single-frame iron cores through the iron core columns to form a three-phase three-dimensional wound iron core structure, and the inclined surfaces of the iron core columns of the two adjacent single-frame iron cores are attached to each other. According to the three-dimensional roll transformer iron core provided by the invention, under the condition that the weight of the iron core is the same, the cross section area of the yoke part is larger than the magnetic density of the yoke part of a three-dimensional wound iron core in a traditional scheme, so that the overall iron loss is smaller.

Description

technical field [0001] The invention belongs to the technical field of transformers, and in particular relates to a three-dimensional wound transformer core and a transformer. Background technique [0002] With the continuous improvement of the technical level, amorphous alloy transformers have been widely used in the field of power distribution, and the technology of amorphous alloy three-dimensional wound core transformers has developed rapidly. The three-dimensional wound core transformer is a high-efficiency and energy-saving transformer developed in recent years, and the processing technology of the wound core is more suitable for the use of magnetic steel strips with thin specifications, high magnetic induction, and ultra-low loss. With favorable conditions, it can reach the first-level and second-level energy efficiency of the latest national "Power Transformer Energy Efficiency Limits and Energy Efficiency Grades 20052-2020" standard. [0003] The amorphous three-di...

AI Technical Summary

Problems solved by technology

The process is complicated, and special non-standard oblique shear equipment needs to be designed

The winding process requires high control precision and complicated winding equipment, which invisibly increases the manufacturing cost of the three-dimensional winding transformer

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