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Coupling inductor

A technology of coupled inductors and magnetic cores, applied in the field of coupled inductors, can solve the problems of large inductor width, increase coil cost, reduce inductor power density, etc., and achieve the effect of high-performance coupled inductors

Active Publication Date: 2014-09-24
HUAWEI DIGITAL POWER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the coil 13 needs to be wound on the first frame core 11 and the second frame core 12 at the same time, which increases the cost of the coil. Moreover, the second frame core 12 needs to extend to both sides, resulting in a larger inductance width. large, reducing the inductor power density

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] see Figure 2 to Figure 4 The first embodiment of the present invention provides a coupled inductor 20, the coupled inductor 20 includes a first magnetic core 21 and a first group of coils and a second group of coils wound on the first magnetic core 21, the first The magnetic core 21 is a frame magnetic core, a group of opposite sides of the frame magnetic core includes a first side and a second side, and the first side includes a first part, a second part a...

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Abstract

The invention provides a coupling inductor. The coupling inductor comprises a first magnetic core as well as a first coil group and a second coil group which are wound on the first magnetic core; the first magnetic core is a frame body magnetic core; a group of opposite edges of the frame body magnetic core comprises a first edge and a second edge; the first edge comprises a first part, a second part and a third part; the second edge also comprises three parts; the second part of the first edge is positioned between the first part and the third part; the distribution of the three parts of the second edge is consistent with that of the first edge; the first coil group is wound on the first part of the first edge and the first part of the second edge; the second coil group is wound on the third part of the first edge and the third part of the second edge; the coupling inductor also comprises a second magnetic core arranged between the first coil group and the second coil group; an air gap is formed between the second magnetic core and the second part of the first edge or the second part of the second edge.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a coupled inductor. Background technique [0002] In recent years, coupled inductors have been widely used in the field of power electronics technology. The use of coupled inductors in power electronic converters can not only significantly improve the dynamic performance and efficiency of the power electronic converter and increase the output switching frequency, but also reduce the output ripple current and greatly reduce the size and cost of the power electronic converter. [0003] like figure 1 As shown, an existing coupled inductor includes a first frame core 11, two second frame cores 12 and two coils 13, the first frame core 11 and each second frame core 12 It includes two opposite magnetic columns and two opposite magnetic yokes, wherein: two second frame body cores 12 are respectively located on both sides of the first frame body core 11, and each second frame body core...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/14H01F27/24H01F27/30
Inventor 叶飞石磊傅电波
Owner HUAWEI DIGITAL POWER TECH CO LTD
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