电源学报

基于死区换流时序分析的LLC软开关设计方法

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钱敏华 ¹ , 李霄 ¹ , 刘海晨 ¹ , 冯奕鸣 ² , 李睿 ²

电源学报 | 电力电子变换器建模与控制 2026,24(1): 100-108

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电源学报 |电力电子变换器建模与控制 2026 , 24 (1) : 100 -108

基于死区换流时序分析的LLC软开关设计方法

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钱敏华¹, 李霄¹, 刘海晨¹, 冯奕鸣², 李睿²

作者信息

^1.中国电气装备集团科学技术研究院有限公司，上海　200040

^2.上海交通大学电力传输与功率变换控制教育部重点实验室，上海　200240

通讯作者:

李霄（1984—　），女，通信作者，博士，高级工程师。研究方向：电力电子与储能集成关键技术。E-mail：lixiao@cee-group.cn。

作者简介:

钱敏华（1986—　），男，硕士，工程师。研究方向：电力电子变流技术。E-mail：qianminhua@cee-group.cn。

刘海晨（1993—　），男，博士，工程师。研究方向：电力电子技术。E-mail：liuhaichen@cee-group.cn。

冯奕鸣（2001—　），男，硕士研究生。研究方向：面向电池储能的直流变换技术。E-mail：feng123@sjtu.edu.cn。

李睿（1980—　），男，博士，教授。研究方向：面向电池储能和可再生能源发电的高效电力电子变换与电网接入技术。E-mail：liruiqd@sjtu.edu.cn。

Design Method for LLC Soft-switching Based on Dead-time Commutation Timing Sequence Analysis

Minhua QIAN¹, Xiao LI¹, Haichen LIU¹, Yiming FENG², Rui LI²

Affiliations

^1.Research Institute of Science and Technology Co., Ltd., China Electrical Equipment Group, Shanghai 200040, China

^2.Key Laboratory of Control of Power Transmission and Conversion of Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China

出版时间: 2026-01-30 doi: 10.13234/j.issn.2095-2805.2026.1.100

文章导航

摘要

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LLC变换器凭借良好的软开关范围、高功率密度等优异特性，广泛应用于户用储能和分布式储能领域。在LLC变换器调制设计中，为实现高效率，需要在变换器整体功率损耗低的硬件参数设计基础上，满足谐振软开关实现条件。通过对死区时间内换流过程的分析，探究了开关管寄生参数对变换器软开关实现的影响。通过对死区时间开关时序的优化，利用开关管寄生参数参与谐振的电路机理，促成软开关的实现，保证较高的运行效率。通过考虑死区时间内损耗分布情况，分析了功率双向流动工况下不改变调制策略对于效率的影响。最后，搭建1台4 kW LLC样机进行双向功率传输实验验证。

关键词

LLC变换器 / 死区换流 / 软开关

Abstract

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LLC converters are widely applied in the fields of household energy storage and distributed energy storage owing to their excellent features such as a good soft-switching range and a high power density. In the modulation design of LLC converters, to achieve a high efficiency, it is necessary to meet the conditions for resonant soft-switching based on the design of hardware parameters with a low overall power loss of the converter. The commutation process during the dead-time is analyzed to explore the influences of the parasitic parameters of switching devices on the realization of soft-switching in the converter. By optimizing the switching timing sequence during the dead-time and utilizing the circuit mechanism where the parasitic parameters of switching devices participate in resonance, the realization of soft-switching is facilitated, ensuring a higher operation efficiency. Considering the loss distribution during the dead-time, the impact of not changing the modulation under bidirectional power flow conditions on the efficiency is analyzed. Finally, verification was performed by building a 4 kW LLC prototype to carry out a bidirectional power transmission experiment.

Key words

LLC converter / dead-time commutation / soft-switching

引用本文

钱敏华, 李霄, 刘海晨, 冯奕鸣, 李睿. 基于死区换流时序分析的LLC软开关设计方法. 电源学报, 2026 , 24 (1) : 100 -108 . DOI: 10.13234/j.issn.2095-2805.2026.1.100

Minhua QIAN, Xiao LI, Haichen LIU, Yiming FENG, Rui LI. Design Method for LLC Soft-switching Based on Dead-time Commutation Timing Sequence Analysis[J]. Journal of Power Supply, 2026 , 24 (1) : 100 -108 . DOI: 10.13234/j.issn.2095-2805.2026.1.100

参考文献

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2026年第24卷第1期

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文章信息

doi: 10.13234/j.issn.2095-2805.2026.1.100

接收时间：2024-10-12
首发时间：2026-10-26
出版时间：2026-01-30

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收稿日期：2024-10-12
修回日期：2024-12-31
录用日期：2025-01-08

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作者信息

^1.中国电气装备集团科学技术研究院有限公司，上海　200040

^2.上海交通大学电力传输与功率变换控制教育部重点实验室，上海　200240

通讯作者:

李霄（1984—　），女，通信作者，博士，高级工程师。研究方向：电力电子与储能集成关键技术。E-mail：lixiao@cee-group.cn。

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https://castjournals.cast.org.cn/joweb/dyxb/CN/10.13234/j.issn.2095-2805.2026.1.100

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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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