Amorphous alloy transformer containing nanometer iron powder

Abstract

The invention discloses an amorphous alloy transformer containing nanometer iron powder. The amorphous alloy transformer comprises a composite core of the transformer, wherein the composite core of the transformer comprises an amorphous alloy core of an annular structure and the nanometer iron powder coating the surface of the amorphous alloy core; and the nanometer iron powder comprises the following elements in percentages by mass: 12%-14% of neodymium, 2.2%-2.5% of boron, 0.05%-0.10% of dysprosium, 0.6%-0.8% of cobalt, 0.5%-0.6% of copper, 0.35%-0.45% of gallium, 0.6%-0.7% of zirconium, 0.2%-1.5% of titanium and the balance of iron. The invention provides the amorphous alloy transformer containing the nanometer iron powder, so that the space between a secondary winding and the amorphous alloy core can be balanced and the amorphous alloy transformer has relatively high initial permeability.

Description

technical field [0001] The invention relates to the technical field of precision transformer products, in particular to an amorphous alloy transformer containing nanometer iron powder. Background technique [0002] Current transformers are mainly used to convert large currents into standard small currents in proportion to facilitate the standardization or miniaturization of measuring instruments, protection equipment and automatic control equipment; in terms of structure, current transformers are mainly composed of mutually insulated primary windings, It is composed of secondary winding, iron core, frame, casing, terminal blocks and other components. In order to achieve the purpose of resisting the DC component, the magnetic core of the transformer is usually made of amorphous alloy magnetic material, but the transformer with the amorphous alloy core has a problem of low initial permeability. [0003] Chinese patent document CN 106783115 A discloses a dual-core anti-DC comp...

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Problems solved by technology

In order to achieve the purpose of resisting the DC component, the magnetic core of the transformer is usually made of amorphous alloy magnetic material, but the transformer with the amorphous alloy core has the problem of low initial permeability.

[0003] Chinese patent document CN 106783115 A discloses a dual-core anti-DC component current transformer, which adopts a double-core structure of nanocrystalline magnetic core and amorphous alloy magnetic core, and the nanocrystalline magnetic core provides higher initial permeability , to overcome the problem of low initial permeability of the amorphous alloy core

However, its disadvantage is that the double core structure of the nanocrystalline magnetic core and the amorphous alloy magnetic core will lead to a larger overall volume of the magnetic core, and since the nanocrystalline magnetic core and the amorphous alloy magnetic core are coaxially packaged, Therefore, the distance between the secondary winding and the nanocrystalline magnetic core and the amorphous alloy magnetic core changes cyclically, thereby increasing the excitation power, which is not conducive to reducing the working energy consumption of the current transformer

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