交错并联双向CLLC型谐振变换器中U+U型磁集成变压器的设计

doi:10.19595/j.cnki.1000-6753.tces.191629

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摘要

交错并联技术提高了变换器的传输容量,但增加了系统的元器件数量,特别是变压器、电感等磁性元件,通过磁集成技术可减少磁件的数量和损耗。传统的磁集成变压器结构多采用EE型结构,绕组和气隙分布在边柱上,因而造成磁压、磁通分布不均等问题,且绕组完全包围气隙,使得扩散磁通和绕组交链产生涡流损耗。因此该文提出一种U+U型磁集成变压器结构,给出集成变压器的设计方法及参数,为与传统EE型磁集成变压器对比,利用ANSYS软件进行仿真,并通过一台400~48V/1kW的实验样机,对两种集成变压器结构进行对比实验,验证了所提U+U型磁集成变压器的优越性。

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	杨玉岗
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	田华松

关键词 ：交错并联, 双向CLLC型谐振变换器, U+U型磁集成变压器, EE型磁集成变压器

Abstract：

The interleave parallel technology improves the transmission capacity of the converter, but increases the number of system components, especially the transformer, inductance and other magnetic components. Magnetic integration technology can reduce the number of magnetic components and loss. The traditional structure of magnetic integration transformer mostly adopts EE type structure, where the windings and air gaps are distributed on the side legs, resulting in uneven distribution of magnetic pressure and magnetic flux. Moreover, the air gaps are surrounded with windings completely, which causes eddy current loss of the diffused magnetic flux hinging with the windings. This paper proposes a U+U type magnetic integrated transformer structure, and gives the related integrated design method and parameters. This paper simulates the magnetic field of the proposed U+U structure and the traditional structure by ANSYS software. Through a 400~48V/1kW interlaced bidirectional CLLC resonant converter prototype, the proposed structure is compared with the traditional EE type structure, which verifies the superiority of the proposed U+U type structure.

Key words： Interleaving parallel bi-directional CLLC resonant converter U+U type magnetic integration transformer EE type magnetic integration transformer

收稿日期: 2019-11-26

PACS:

TM46

基金资助:

国家自然科学基金—山西煤基低碳联合基金（U1510128）和辽宁省特聘教授（551806010）资助项目

通讯作者: 武艳秋女,1996年生,硕士研究生,研究方向为电力电子技术及磁集成技术。E-mail: 2496686505@qq.com

作者简介: 杨玉岗男,1967年生,博士,教授,博士生导师,研究方向为电力电子技术及磁集成技术。E-mail: 447987957@qq.com

引用本文:

杨玉岗, 武艳秋, 孙晓钰, 郭词, 田华松. 交错并联双向CLLC型谐振变换器中U+U型磁集成变压器的设计[J]. 电工技术学报, 2021, 36(2): 282-291. Yang Yugang, Wu Yanqiu, Sun Xiaoyu, Guo Ci, Tian Huasong. Design of U+U Type Magnetic Integrated Transformer in Interlaced Bidirectional CLLC Resonant Converter. Transactions of China Electrotechnical Society, 2021, 36(2): 282-291.

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