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Transformer and inductor hybrid magnetic integrated structure

A magnetic integration and transformer technology, applied in the direction of transformers, transformers/inductor coils/windings/connections, inductors, etc., can solve the problems of low utilization rate of magnetic core, large loss, large magnetic flux in the middle column of the magnetic core, etc. Achieve the effect of flexible magnetic core structure, low magnetic core loss and optimized magnetic flux path

Pending Publication Date: 2021-04-13
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, this method relies on the core column for decoupling, the utilization rate of the core is not high, and the magnetic flux on the core column is large, the loss is large, and there is still room for further improvement

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  • Transformer and inductor hybrid magnetic integrated structure
  • Transformer and inductor hybrid magnetic integrated structure
  • Transformer and inductor hybrid magnetic integrated structure

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Embodiment Construction

[0030]Attachfigure 1 It is an existing two-way CLC resonant converter circuit diagram, including a transformer and two inductances, in order to reduce the volume, improve efficiency, the present invention adopts magnetic integrated technique, and simultaneously integrates the transformer and two inductances into one magnetic core. The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0031]Attachfigure 2 It is a secondary, secondary winding diagram of the A-type magnetic column, the number of primary winding turns on the two magnetic columns into a symmetrical relationship, that is, if one of the magnetic column primary windings is npNA1(Np≥1, nA1≥ 1), the number of the secondary windings is nsNA2(Ns≥1, nA2≥1, nA1≠ nA2Then, the number of primary winding turns of another magnetic column is n.pNA2The secondary winding number is nsNA1The cross-sectional area of ​​each magnetic column is the same; each magnetic col...

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Abstract

The invention discloses a transformer and inductor hybrid magnetic integrated structure, and belongs to the technical field of power electronics. The transformer and inductor hybrid magnetic integrated structure is composed of a pair of magnetic cores, a primary winding and a secondary winding, wherein each magnetic core at least comprises four winding magnetic columns and a plurality of non-winding columns. According to the invention, one transformer and two inductors can be integrated in one magnetic core, flexible configuration of a winding structure can be achieved, any turn ratio of the transformer and any excitation inductance and leakage inductance ratio can be achieved, magnetic core loss can be reduced, and efficiency can be improved; the size and weight of the power magnetic piece are greatly reduced through the integrated structure, so that the transformer power density is enhanced; and the transformer and inductor hybrid magnetic integrated structure is particularly suitable for various application occasions of high-frequency, high-efficiency and high-power-density power conversion such as bidirectional CLLC resonant converters and the like by using transformers and inductors.

Description

Technical field[0001]The present invention relates to a transformer and an inductance mixing magnetic integrated structure, belonging to the field of power electronics.Background technique[0002]With the rapid development of modern power electronics, the birth of high frequency devices, the switching power supply is developed towards high frequency, integrated and modular direction. For power conversion devices, increasing the switching frequency can significantly reduce the volume of the passive device, such as inductance, transformer, or the like to enhance the power density of the converter. However, higher switching frequencies increase the switching loss of the converter, so scholars have vigorously study soft switching technology. The resonant converter is favored by its outstanding soft swing, high efficiency, high power density. Among them, the CLLC resonant converter can achieve two-way power transmission due to its symmetry of its structure, and a soft switch can be impleme...

Claims

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Application Information

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IPC IPC(8): H01F3/10H01F27/29H01F38/00
CPCH01F3/10H01F27/29H01F38/00
Inventor 邹军吴红飞刘越葛子贤杨帆
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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