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Magnetic integrated matrix transformer and isolated DC/DC converter

A technology of transformer and magnetic integration, applied in transformer/inductor shell, transformer/inductor cooling, transformer/inductor magnetic core, etc., can solve the problems of lack of versatility and poor flexibility of matrix transformers, and improve the transformation efficiency. efficiency, flexibility and versatility, and improved core utilization

Active Publication Date: 2022-02-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a magnetically integrated matrix transformer structure for the problems of poor flexibility and lack of versatility of the matrix transformer in the existing isolated DC / DC converter

Method used

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  • Magnetic integrated matrix transformer and isolated DC/DC converter
  • Magnetic integrated matrix transformer and isolated DC/DC converter
  • Magnetic integrated matrix transformer and isolated DC/DC converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] In this example, the magnetic core adopts a square structure, and the lower part of the square magnetic core quadrilateral column type transformer component refers to Figure 3A , the upper part of the square magnetic core quadrilateral column type transformer assembly refers to 3B. The magnetic core is provided with a base, and the base is provided with a center column and four side columns, and the four side columns are evenly distributed on a square centered on the center column; two secondary side windings are wound on the side columns, and each secondary The side winding is wound on two adjacent side columns, the middle column is used to wind the primary side winding, the magnetic core and the secondary winding wound on the side columns form a transformer assembly; two transformer assemblies with the same structural design are connected to each other After the combination, the center columns of the two are aligned and connected, and the side columns are aligned and...

Embodiment 2

[0075] In this example, the magnetic core adopts a square structure, and the lower square magnetic core quadrilateral column type transformer component refers to Figure 4A , the upper part of the square magnetic core quadrilateral column type transformer assembly refers to Figure 4B . The magnetic core is provided with a base, and the base is provided with a center column and four side columns, and the four side columns are evenly distributed on a square centered on the center column; two secondary windings are wound on the side column, and one secondary winding The winding 003A is wound on three adjacent side columns, another secondary winding 003B is wound on two adjacent side columns, the middle column is used to wind the primary winding 002, and the magnetic core is wound on the side columns The secondary windings of the transformer form a transformer assembly; two transformer assemblies with the same structural design are rotated 180° and combined with each other. Afte...

Embodiment 3

[0079] In this example, the magnetic core adopts a regular hexagonal structure, and the hexagonal magnetic core in the lower part refers to the hexagonal column transformer component Figure 5A , the upper part of the hexagonal magnetic core hexagonal column type transformer assembly refers to Figure 5B . The magnetic core is provided with a base, and the base is provided with a center column and six side columns, and the six side columns are evenly distributed on a regular hexagon centered on the center column; three secondary windings are wound on the six side columns, Each secondary winding is wound on two adjacent side columns, the middle column is used to wind the primary winding, the magnetic core and the secondary winding wound on the side columns form a transformer assembly; two transformers with the same structural design The components are rotated 180° and combined with each other. After the combination, the central columns of the two are aligned and connected, and...

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Abstract

The invention discloses a magnetic integrated matrix transformer and an isolated DC / DC converter, and belongs to the technical field of power electronics. The magnetic integrated matrix transformer comprises a magnetic core, a primary winding, a secondary winding and a rectifying unit, the magnetic core is provided with a base, and a middle column and at least three side columns are formed on the base; at least one secondary winding is wound on the magnetic core, each secondary winding is wound on at least two adjacent side columns, and the middle column is used for winding the primary winding. On the premise that a magnetic core is not changed, the secondary winding structure of the transformer is flexibly configured, any transformer turn ratio and any secondary path number output are achieved, the size and weight of the transformer can be reduced, the power density of the converter can be improved, the frequency range requirements of the converter under different working occasions can be met, and a magnetic part has flexibility and universality. Meanwhile, when the secondary winding of the transformer is arranged in an orthogonal mode, the current sharing effect is achieved, and the good heat dissipation effect can be achieved through the metal shell wrapping the magnetic core.

Description

technical field [0001] The invention relates to a magnetic integrated matrix transformer and an isolated DC / DC converter based on the magnetic integrated matrix transformer, belonging to the technical field of power electronics. Background technique [0002] With the development of power electronics technology and the progress of high-frequency semiconductor devices, switching converters are developing in the direction of high frequency, integration and modularization. High frequency, high efficiency, high power density and integration are the development trends of switching converters. At the same time, due to the increasing demand for data center power supplies and high dynamic response power supplies, switching converters are also developing towards low-voltage and high-current applications. Traditional transformers have been difficult to meet the needs of miniaturization and high power density. In order to improve the efficiency and power density of this type of convert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/24H01F27/30H01F27/02H01F27/22H01F19/00H02M3/22
CPCH01F27/24H01F27/306H01F27/025H01F27/22H01F19/00H02M3/22H01F2019/085
Inventor 陈乾宏陈俊杰朱俊辉徐幸灿张斌柯光洁徐立刚温振霖任小永张之梁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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