Primary coil winding structure of power supply transformer

Abstract

The invention relates to a primary coil winding structure of a power supply transformer. In the structure, when an input voltage on a primary side is transformed between 220V and 380V, an output voltage on a secondary side is unchanged. A primary coil of the transformer comprises a first winding wire, a second winding wire and a third winding wire, wherein the turn number of the first winding wire is N11, and the first winding wire has a first connecting end and a second connecting end; the turn number of the second winding wire is N12, and the second winding wire has the second connecting end and a third connecting end; the turn number of the third winding wire is N13, and the third winding wire has a fourth connecting end and a fifth connecting end; the turn number N13 of the third winding wire is equal to the turn number N12 of the second winding wire; the ratio of the turn number N11 of the first winding wire to the turn number N12 of the second winding wire is 3: 8; when the input voltage on the primary side of the transformer is 220V, the third and second winding wires are connected in parallel; and when the input voltage on the primary side of the transformer is 380V, the third and second winding wires are connected in series. The winding method of the invention has the advantages of simplicity, winding cost reduction, convenient connection operation, safety and reliability.

Description

technical field [0001] The invention relates to a winding structure of a primary side coil of a power transformer, in particular, when the input voltage corresponding to the primary side of a power transformer is converted between 220V and 380V, the output voltage of the secondary side of the power transformer remains unchanged . Background technique [0002] At present, to realize the conversion of the primary input voltage between 220V and 380V on the same power transformer, and keep the output voltage of the secondary side of the power transformer unchanged, it is necessary to increase the volume of the power transformer, and at the same time increase the winding of the transformer. Line cost, connection operation is not convenient enough. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a winding structure for the primary side coil of a power transformer. The winding method is simple, ...

AI Technical Summary

Problems solved by technology

[0002] At present, to realize the conversion of the primary input voltage between 220V and 380V on the same power transformer, and keep the output voltage of the secondary side of the power transformer unchanged, it is necessary to increase the volume of the power transformer, and at the same time increase the winding of the transformer. Line cost, connection operation is not convenient enough

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