Magnetic integration type integrated filter inductance transformer

Abstract

The invention discloses a magnetic integration type integrated filter inductance transformer which is characterized in that the transformer adopts two sets of triphase shell-type iron core structures or two sets of single-phase shell-type iron core structures; an alternating current network side winding and a load winding are only wound on a main iron core post, and filtering windings are simultaneously wound on the main iron core post and an auxiliary iron core post; the main iron core structure is the same as the traditional shell-type transformer, and the iron core magnetic circuit is closed; the auxiliary iron core adopts a magnetic circuit structure with an air gap; the number of sets of filtering windings is configured according to the filtering requirement of a system, and each set of windings are externally connected with a corresponding filtering capacitor to jointly constitute a specific subharmonic filtering branch. According to the invention, a filter reactor and the transformer are integrated, and the filtering windings can realize effective harmonic suppression through externally connecting the filter capacitor, thus one-time cost of investment is greatly reduced; and at the same time, the auxiliary iron core structure provides a circulation path for leakage magnetic flux between the primary and secondary windings, restricts the circulation direction of the leakage magnetic flux, and is beneficial to reducing the stray loss of the transformer, thus improving the operating efficiency of the transformer.

Description

Technical field [0001] The present invention involves a transformer, which specializes in a magnetic collection of magnetic integrated filtering inductance transformers combining magnetic integration technology with integrated filter inductance technology. Background technique [0002] With the continuous development and popularization of my country's electrical electronic technology, the electronic electronic conversion device and the variable -flow system are widely used in daily home electrical appliances, electrified railways, urban rail traction, electrolytic, chemical, metallurgy and other fields. Such electrical energy conversion devices Non -linear power electronic devices such as crystal gates, diode, and IGBT are used. Because non -linear power electronic devices will generate a certain harmonic component in the working process, it is accompanied by the effective power consumption.If effective harmonic governance and non -contribution compensation measures are not adopt...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of traditional filter field occupying space, large site and small traditional integrated filter induct

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