Three-dimensional three-phase amorphous alloy transformer iron core

Abstract

The invention discloses a three-dimensional three-phase amorphous alloy transformer iron core, which comprises a three-phase core, three single-phase iron core covers and six inner iron yoke covers. The three-phase iron core is formed by assembling three closed rectangular frame type single-phase cores according to an equilateral triangle shape, the three single-phase cores are respectively formed through winding amorphous alloy tapes with different widths, and the cross-sections of a left iron core column, a right iron core column, an upper iron yoke and a lower iron yoke are isosceles trapezoid-shaped with the length of the upper bottoms identical to length of the waist parts and the length of the lower bottoms being twice as along as the upper bottoms; the three iron core columns of the three-phase iron core are formed through gluing the iron core columns of two single-phase cores with the lower bottoms of the cross-sections being adhered, so that the cross-sections of the three iron core columns of the three-phase iron core forming an equilateral hexagon; the three single-phase iron core covers are correspondingly sleeved outside the three single-phase cores, so that the threeiron core columns of the three-phase iron core are packaged in iron core column shells; and the six inner iron yoke covers are correspondingly connected with yoke covers so that three upper yokes andthree lower yokes of the three-phase iron core are packaged in yoke shells.

Description

technical field [0001] The invention relates to an amorphous alloy three-dimensional three-phase transformer iron core. Background technique [0002] At present, the materials for manufacturing transformer cores mainly include silicon steel sheets and amorphous alloys. Amorphous alloy is produced by rapid rapid cooling and solidification, and its physical state is that the metal atoms are arranged in a disordered amorphous manner, which is more conducive to magnetization and demagnetization. This material is used to make the transformer core, which makes the magnetization process of the transformer very easy and can greatly reduce the no-load loss of the transformer, so the amorphous alloy is a more energy-saving material. [0003] However, at present, the amorphous alloy strip mainly relies on imports, and the width of the strip is very small, only 142cm, 170cm and 213cm, which cannot meet the requirements of iron cores with different capacities. Moreover, the amorphous al...

AI Technical Summary

Problems solved by technology

As we all know, among shapes with the same cross-sectional area, the circumference of a circle is the smallest, and the circumference of a rectangle is larger, and the larger the aspect ratio of the rectangle, the larger the circumference, and the larger the circumference, the larger the average turn length of the transformer coil, which not only wastes precious copper, and will increase the load loss of the transformer and the temperature rise of the transformer

[0004] Since the cross-section of the iron core is rectangular and cannot be circular, the shape of the coil can only be rectangular instead of circular, and it cannot be wound with an iron core, so the iron core can only be made into an open type, and the opening of the open type iron core Part materials have to be bent many times, especially after annealing, which will increase the stress of the material, reduce the performance of the iron core, and increase the no-load loss

In addition, if there is a gap at the butt joint of the opening of the open core and the joint is not tight enough, the noise will be louder than that of the closed core with the same capacity.

Images