电源学报

基于有限元仿真的LLC谐振变换器集成式高频变压器优化设计

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顾泽煜 , 谢小高中国电源学会会员

电源学报 | DC-DC变换器 2025,23(6): 23-31

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电源学报 |DC-DC变换器 2025 , 23 (6) : 23 -31

基于有限元仿真的LLC谐振变换器集成式高频变压器优化设计

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顾泽煜, 谢小高中国电源学会会员

作者信息

杭州电子科技大学自动化学院，杭州　310018

通讯作者:

谢小高（1975—　），男，中国电源学会会员，通信作者，博士，研究员。研究方向：电力电子与电力传动。E-mail：xiexg@hdu.edu.cn。

作者简介:

顾泽煜（1999—　），男，硕士。研究方向：电力电子与电力传动。E-mail：782768046@qq.com。

Optimal Design of Integrated High-frequency Transformer for LLC Resonant Converter Based on Finite Element Simulation

Zeyu GU, Xiaogao XIE Member, CPSS

Affiliations

School of Automation, Hangzhou Dianzi University, Hangzhou 310018, China

出版时间: 2025-10-30 doi: 10.13234/j.issn.2095-2805.2025.6.23

文章导航

摘要

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LLC谐振变换器集成式高频变压器的气隙通常放置在磁心的中心，且采用单气隙结构。采用有限元分析法，基于Ansys分别建立了不同气隙位置的三维非线性变压器模型，研究了气隙位置对损耗的影响。通过仿真模拟，得到不同气隙位置的损耗曲线，证明了气隙位置放置于二次绕组侧更有利于降低变压器损耗和提升变换器效率，为集成式高频变压器的优化设计提供了参考。在此基础上，提出了1种二次侧三气隙磁路结构的集成式高频变压器结构，可进一步降低变压器损耗。最后，在1台160 W的LLC调光型LED驱动器实验样机中进行了实验验证，证实了所提方法的正确性与可行性。

关键词

磁集成 / 气隙位置 / 分布式气隙 / 有限元分析

Abstract

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The air gap in an integrated high-frequency transformer of an LLC resonant converter is usually placed at the center of magnetic core, and a single air gap structure is adopted. The nonlinear three-dimensional transformer models with different air gap positions are established using a finite element analysis method based on the software Ansys, and the influence of air gap position on loss is studied. Through simulations, the curves of loss versus air gap positions are obtained, and it is proved that the loss of transformer can be reduced and the converter efficiency can be improved if the air gap is located in the region of secondary windings, providing a reference for the optimal design of the integrated high-frequency transformer. On this basis, an integrated high-frequency transformer structure with three air gap magnetic circuits on the secondary side is proposed, so as to further reduce the transformer loss. Finally, an experimental prototype of a 160 W LLC dimmable LED driver was built, and experimental results verified the correctness and feasibility of the proposed method.

Key words

Magnetic integration / air gap position / distributed air gap / finite element analysis

引用本文

顾泽煜, 谢小高中国电源学会会员. 基于有限元仿真的LLC谐振变换器集成式高频变压器优化设计. 电源学报, 2025 , 23 (6) : 23 -31 . DOI: 10.13234/j.issn.2095-2805.2025.6.23

Zeyu GU, Xiaogao XIE. Optimal Design of Integrated High-frequency Transformer for LLC Resonant Converter Based on Finite Element Simulation[J]. Journal of Power Supply, 2025 , 23 (6) : 23 -31 . DOI: 10.13234/j.issn.2095-2805.2025.6.23

参考文献

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2025年第23卷第6期

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文章信息

doi: 10.13234/j.issn.2095-2805.2025.6.23

接收时间：2023-03-09
首发时间：2026-10-26
出版时间：2025-10-30

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收稿日期：2023-03-09
修回日期：2023-07-24
录用日期：2023-08-21

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作者信息

杭州电子科技大学自动化学院，杭州　310018

通讯作者:

谢小高（1975—　），男，中国电源学会会员，通信作者，博士，研究员。研究方向：电力电子与电力传动。E-mail：xiexg@hdu.edu.cn。

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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