Winding structure and winding method of transformer coil

Abstract

The invention provides a winding structure of a transformer coil. The winding structure comprises a winding die and a wire body, wherein the wire body is wound from the start winding end of the winding die to the tail end, and the wire body from the start winding end to the tail end is wound clockwise; the wire body of the first turn is bent in an S shape at the start winding end, then the wire body is horizontally wound for a circle, and next, the wire body is bent for an oblique line towards the right lower side; the vertical distance between the upper end and the lower end of the oblique line is the sum of the diameter of the wire body and the distance between every turn of the coil, then the wire body is repeatedly and horizontally wound and wound downwards in an inclined mode until the tail end is reached, and the wire body is bent into an S shape and extended downwards in a vertical direction. According to the winding structure, the first turn wire at the end part is bent in an Sshape with a high wire, so that the spiral angle of a turn of wire is reduced; the end of each section is leveled, the height of the diameter of one wire body is reduced from calculation compared with that of a traditional structure, so that the height of the coil is reduced; under the condition that the insulation structure and the electrical distance are the same as those in the traditional structure, the height of an iron core window can be effectively reduced, the use amount of the iron core silicon steel sheet is reduced, and the no-load loss is reduced.

Description

technical field [0001] The invention relates to the technical field of transformer manufacturing, in particular to a winding structure of a transformer coil and a winding method thereof. Background technique [0002] In order to make the insulating material operate reliably within the safe voltage range, the coil is usually designed as a multi-segment multi-layer cylindrical structure with more than 2 segments to reduce its inter-layer voltage and inter-segment voltage, and an extra insulating material is placed between the layers And the method of opening the distance between segments to meet the technical requirements of the transformer's electrical strength. The higher the voltage, the more segments. However, the greater the number of segments, the greater the cumulative spacing between segments, which results in a higher axial height of the coil. As a result, the volume of the transformer increases, and the weight of silicon steel sheet, insulating material, steel and ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of unnecessary waste of space in the coil structure existing in the prior art, the present invention provides a winding structure of a transformer coil and a winding method thereof

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