High power, high frequency and high voltage rectifier transformer

Abstract

The invention discloses a high power, high frequency and high voltage rectifier transformer. The high power, high frequency and high voltage rectifier transformer comprises at least two iron cores, high voltage winding groups, rectifier bridges, low voltage winding groups and an oil tank and also comprises a supporting frame; the iron cores are arranged on the supporting frame sequentially; gaps are reserved between the adjacent iron cores; the high voltage winding groups which wind the iron cores are connected with the matched rectifier bridges; output of the rectifier bridges is in series connection sequentially and then is output; the low voltage winding groups wind the inside of iron core holes in a penetrating mode; insulating layers are arranged between the high voltage winding groups which wind the adjacent iron cores; insulating layers are arranged between the high voltage winding groups and the low voltage winding groups; the supporting frame is arranged in the oil tank. The high power, high frequency and high voltage rectifier transformer has the advantages of being capable of avoiding high local temperature rise and accordingly reducing the aging speed of materials, extending the service life of transformer oil and meanwhile extending the service life of the transformer.

Description

Technical field [0001] The invention relates to a high-power, high-frequency and high-voltage rectifier transformer. Background technique [0002] An existing high-power, high-frequency and high-voltage rectifier transformer for an electric dust collector includes an iron core, a low-voltage winding, a high-voltage winding, a rectifier bridge and a transformer oil tank. The iron core adopts rectangular ferrite or ultra-microcrystalline transformer core with long sides and short sides. The low-voltage winding is divided into two sets of wide copper foil and wound on the two low-voltage skeletons on the long side of the iron core in the same direction. Half of the high-voltage sub-windings are wound on one high-voltage coil frame in turn, the other half of the high-voltage sub-windings in the high-voltage winding are wound on the other high-voltage coil frame in turn, and the two high-voltage coil frames are respectively set on the two low-voltage windings. Above, each high-voltag...

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Problems solved by technology

In the above-mentioned transformer, since the high-voltage winding and the low-voltage winding are superimposed on the same iron core in multiple layers, not only the winding loss is large, but the effect of the proximity effect is obvious, and the heat emitted by the high-voltage and low-voltage coil windings is not easy to dissipate, so heat is generated around the iron core Concentration, the local temperature rise of the transformer is very high, which not only accelerates the aging of the material, affects the service life of the transformer oil; but also shortens the service life of the transformer

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