Winding method of high-frequency transformer

Abstract

The invention relates to the technical field of transformers, in particular to a winding method of a high-frequency transformer. The winding method comprises the following steps of: (1) starting two strands for a winding N2 at a framework starting end 7, starting one strand for a winding N3 at a framework starting end 8, and starting one strand for a winding N4 at a framework starting end 10; (2) twisting four strands obtained in the step (1) into a strand of twisted wire; (3) uniformly and tightly winding the twisted wire obtained in the step (2) around a framework winding groove for three layers, hanging the tail end of a strand of wire of the winding N3 at a framework take-up end 9, and hanging the tail end of a strand of wire of the winding N4 at a framework starting end 8; and (4) winding two strands of wires of the winding N2 by one more circle, and hanging the tail ends of the two strands of wires at a framework take-up end 6. The winding method of a secondary winding is changed, so that the electromagnetic coupling among secondary windings can be improved, the phenomenon of voltage drift of secondary windings is avoided, and the performance of the high-frequency transformer is improved.

Description

technical field [0001] The invention belongs to the technical field of transformers, in particular to a winding method of a high-frequency transformer. Background technique [0002] The function of the power transformer is power transmission, voltage conversion and insulation isolation. As a main soft magnetic electromagnetic component, it is widely used in power supply technology and power electronics technology. [0003] The high-frequency transformer is the most important component of the switching power supply. High-frequency transformer is a power transformer whose operating frequency exceeds intermediate frequency (10kHz). It is mainly used as a high-frequency switching power transformer in high-frequency switching power supplies, and is also used as a high-frequency inverter in high-frequency inverter power supplies and high-frequency inverter welding machines. power transformer. [0004] In the prior art, a high-frequency transformer generally includes three secon...

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Problems solved by technology

[0004] In the prior art, a high-frequency transformer generally includes three secondary windings, and its winding method is three-wire parallel winding, and the layers are isolated with tape, which is called a multi-layer isolation winding method. This multi-layer isolation winding method, the secondary The coupling between the primary windings is poor, resulting in the application in the circuit, prone to output winding voltage drift (usually high voltage), difficult to control

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