Three-phase transformer with built-in high-frequency inductor

Abstract

Provided is a three-phase transformer with a built-in high-frequency inductor. An auxiliary core column of the transformer is formed by splicing a plurality of columnar silicon-iron magnetic powder cores. Due to the fact that air gaps of the columnar silicon-iron magnetic powder cores are evenly distributed on the columnar silicon-iron magnetic powder cores, high-frequency loss and high-frequency noise of the inductor can be effectively avoided, and effective work of the transformer can be also ensured at high switching frequency.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a three-phase transformer with built-in high-frequency inductors. Background technique [0002] In the inverter field, inductors are essential devices. In many occasions, in addition to the inductor, a transformer used in conjunction with the inductor is also required. However, in the inverter field, setting these two devices at the same time is not only costly, but also takes up a lot of volume, which is very unfavorable for the device setting work in the inverter field. Therefore, it is proposed to use one coil to be wound on two magnetic cores at the same time, so as to integrate the inductor and the transformer on one device, so as to save cost and reduce the volume of the product. [0003] However, in the current inverter field, the switching frequency of about ten kilohertz is becoming more and more popular. The high switching frequency not only makes the noise of th...

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Problems solved by technology

[0003] However, in the current inverter field, the switching frequency of about ten kilohertz is becoming more and more popular. The high switching frequency not only makes the noise of the inductor relatively large, but also the loss of the magnetic core is relatively large, which in turn has an adverse effect on the transformer.

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