A kind of epc magnetic core for transformer and inductance integration in forward converter

A technology for forward converters and transformers, applied in the directions of transformer/inductor cores, transformer/inductor parts, transformer/inductor coils/windings/connections, etc. Problems such as irregularity of the yoke column around the core, to achieve the effect of reducing volume and weight, and reducing the number

Active Publication Date: 2019-05-24
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the packaging of the EPC magnetic core is based on the horizontal installation of the matching skeleton, and the side yoke columns of the EPC magnetic core are irregular, the magnetic integration scheme based on E-type and I-type is difficult to apply to the EPC-type magnetic core

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  • A kind of epc magnetic core for transformer and inductance integration in forward converter
  • A kind of epc magnetic core for transformer and inductance integration in forward converter
  • A kind of epc magnetic core for transformer and inductance integration in forward converter

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Embodiment Construction

[0027] The present invention will be further explained below in conjunction with specific embodiments and the drawings in the specification.

[0028] See Figure 1a~1d , The present invention includes two magnetic cores with the same structure, the magnetic core material is Mn-Zn ferrite, the magnetic core includes a magnetic core main yoke 3, the two ends of the magnetic core main yoke 3 are symmetrically provided with a left side yoke 1 and a right side yoke 2. The magnetic core main yoke 3 is provided with a magnetic core central pillar 4, and the magnetic core central pillar 4 is provided with a hole 5 that penetrates the magnetic core central pillar 4 and the magnetic core main yoke 3, and the two magnetic cores are along the magnetic core central pillar 4 The top surface is butt axially symmetrically, the two magnetic cores are fixedly connected by a skeleton, and the apertures 5 of the two magnetic cores are connected, see Figure 4 , The inductive winding 7 passes through ...

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Abstract

The invention discloses an EPC magnetic core for integrating a transformer and an inductor in a forward converter, and aims to achieve magnetic integration of a transformer winding and an inductor winding, reduce the volume and the weight of a system, save an installation space of a power supply and reduce the system cost. The EPC magnetic core comprises two magnetic cores, wherein the two magnetic cores are same in structure, each magnetic core comprises a magnetic core main yoke, a left side yoke and a right side yoke are symmetrically arranged at two ends of the magnetic core main yoke, a magnetic core middle post is arranged on the magnetic core main yokes, a hole is formed in the magnetic core middle post and penetrates through the magnetic core middle post and the magnetic core main yoke, the two magnetic cores are symmetrically abutted along an axial direction of a top surface of the magnetic core middle post, holes of the two magnetic cores communicate with each other, the inductor winding passes through the holes and is wound along a radial direction of the magnetic core middle post, a high-voltage winding and a low-voltage winding are wound along an axial direction of the magnetic core middle post and are wound outside the magnetic core middle post and the inductor winding, and the high-voltage winding is wound outside the low-voltage winding.

Description

Technical field [0001] The invention belongs to the technical field of power electronics, and particularly relates to an EPC magnetic core used for integrating a transformer and an inductor in a forward converter. Background technique [0002] For conventional isolated forward converters, the isolation transformer and filter inductor are used as discrete magnetic components and are attached to independent RM cores. Therefore, to reduce the volume and weight of the isolated forward converter, one of the methods is to integrate the isolation transformer and the filter inductor on a pair of magnetic cores. The traditional magnetic integration scheme is mainly based on E-type and I-type magnetic cores, and then uses the side yoke part and the center pillar part of the E-type magnetic core to construct the diversity of winding winding methods, so as to realize the decoupling magnetic integration of the transformer and the inductor. There are usually the following two core structures:...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/24H01F27/30H01F27/34
CPCH01F27/24H01F27/306H01F27/34
Inventor 王曙鸿原东昇王安刘克承李海林王爽
Owner XI AN JIAOTONG UNIV
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