Semi-potting transparent high-voltage and high-frequency transformer structure capable of serialization

Abstract

The invention discloses a semi-potting transparent high-voltage and high-frequency transformer capable of serialization. The transformer structure is a magnetic core unit formed by butting two U-shaped ferrite magnetic cores, or a magnetic core module formed by serially connecting a plurality of magnetic core units, or an integral module formed by connecting a plurality of magnetic core modules inparallel, wherein a certain gap is formed between every two magnetic core units in each magnetic core module. Primary and secondary windings are wound on the left and right columns of each magnetic core unit according to upper and lower positions in a layered mode. Electric potential processing for high-frequency transformer components, high-voltage insulation processing and structural process ofcreep distance are further carried out on the structure, the difficulty of insulation design is reduced, the problem that heat cannot be dispersed caused by full potting is avoided while the insulating strength is guaranteed, a semi-transparent structure is still maintained integrally, and the performance of heat dissipation is improved. Moreover, the pouring quantity is reduced through the design of a high-voltage winding potting structure, and the weight and cost of the high-voltage and high-frequency transformer are reduced.

Description

Technical field [0001] The invention belongs to the technical field of application of power electronic transformers, and relates to a high-voltage high-frequency transformer, in particular to a serializable semi-potted transparent high-voltage high-frequency transformer structure. Background technique [0002] High-frequency transformers are the key components of voltage conversion and electrical isolation in power electronic converters. Generally speaking, due to the low frequency of the traditional power frequency transformer, the transformer core volume is large, and there are problems such as low power density and difficult control. It is difficult to meet the large-capacity DC sources in energy routers such as photovoltaic power generation and battery power generation. It is difficult to meet the needs of miniaturization and light weight. As the frequency increases, the volume of the transformer becomes smaller, the power density increases, and the heat dissipation area is ...

AI Technical Summary

Problems solved by technology

The high-frequency transformer has a high loss density, and the fully potted structure causes the heat of the transformer to be concentrated inside and cannot be dissipated, which may damage the insulation and cause incalculable losses

The use of transformer oil for insulation design can provide insulation on the one hand and enhance heat dissipation on the other hand, but its structure design is complicated in power electronic transformers, and the oil is not easy to manage, so it is not suitable

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