A Mesh-shaped Magnetic Integrated Coupled Inductor

Abstract

The invention discloses an integrated magnetic coupled inductor in the shape of Chinese character mu, wherein the inductor is composed of an iron core body in the shape of Chinese character mu and two-phase coils; the iron core body in the shape of Chinese character mu is composed of four ''U'' shaped iron cores; the magnetic poles of two ''U'' shaped iron cores are arranged oppositely and form a square shaped iron core; the two-phase coils are wound on the two magnetic poles of the square shaped iron core; the other two ''U'' shaped iron cores are arranged at two sides of the magnetic poles of the square shaped iron core and are buckled on the two-phase coils; and the two magnetic poles of the other two ''U'' shaped iron cores keep certain distances with the magnetic poles of the square shaped iron core, thus forming air gaps. The inductor has the advantages that the inductor is used for inductance coupling integration; the quantity of the air gaps is doubled; the lengths of the air gaps are reduced to a half; the air gaps are symmetrical; the diffusion fluxes of the air gaps are clearly reduced; the mutual inductive magnetic circuit of the two coils is the shortest without the air gap; the mutual inductance and the self-inductance are high; the energy and the material are saved; and the electromagnetic interferences are reduced.

Description

technical field [0001] The invention relates to an inductor, in particular to a "me"-shaped magnetic integrated coupling inductor, which can be widely used in various interleaved parallel switching power supplies with one-way operation and two-way operation. technical background [0002] In recent years, switching power supplies that provide electrical energy for various electrical equipment are developing in the direction of low voltage, high current, small size, light weight, high efficiency, thinning and integration, including the widely used in electric vehicles that have emerged in recent years , hybrid vehicles, uninterruptible power supplies, power quality regulation power supplies, aviation power supplies, renewable energy power generation and superconducting energy storage and other bidirectional switching power supplies that require bidirectional energy flow. These switching power supplies use a multi-phase interleaved parallel topology. It can increase the output ...

AI Technical Summary

Problems solved by technology

The existing "EE" or "EI" type coupled inductors have technical defects such as the long mutual inductance magnetic path of the two coils, large magnetic resistance, small self-inductance and mutual inductance, which is not conducive to the reduction of magnetic core volume and loss reduction

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