Transformer adopting composite wire coil and connection method of composite wire

Abstract

The invention discloses a transformer adopting a composite wire coil and a connection method of a composite wire, and the transformer adopting the composite wire coil comprises an iron core column and a coil wound on the iron core column, the coil sequentially comprises an upper-section coil, a middle-section coil electrically connected with the upper-section coil and a lower-section coil electrically connected with the middle-section coil from top to bottom, the upper-section coil and the lower-section coil are formed by winding a first wire, the middle-section coil is formed by winding a second wire, the first wire is a composite wire comprising a plurality of sub-wires, and the second wire is a composite wire comprising a plurality of sub-wires. The second wire is a composite wire comprising a plurality of sub-wires, and the number of the sub-wires of the first wire is larger than that of the sub-wires of the second wire. The multiple composite wires are arranged at the two ends of the coil, the two composite wires are arranged in the middle of the coil, the problems of eddy current loss increase and temperature rise caused by magnetic field bending of the ends of the coil can be solved, and meanwhile the production cost is controlled.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a transformer using a composite wire coil and a connection method of the composite wire. Background technique [0002] In high-voltage, ultra-high-voltage, and ultra-high-voltage AC and DC transformers, ordinary wires are generally used for winding, and ordinary wires are generally single wires. According to the magnetic effect of the current, if a metal wire passes through the current, a circular magnetic field will be generated in the space around the wire, and the greater the current flowing in the wire, the stronger the magnetic field generated. After power-on, due to the thick cross section of a single wire, the current flowing through it is relatively large, and the magnetic field formed by it will also be strong. Because the magnetic field at the end of the coil itself will bend, so the ordinary wire is online. The magnetic field at the end of the loop will increase ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of large eddy current loss at the end of the coil and high cost of composite wires in the prior art, the embodiment of the present invention provides a transformer using composite wire coils and a connection method for composite wires

Images