高频谐振变换器在过载限流下的数字同步整流控制方法

宁煜航; 白小青; 王康平; 赵若辰; 魏高昊

doi:10.7652/xjtuxb202603017

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高频谐振变换器在过载限流下的数字同步整流控制方法

更新时间：2026-03-09

- 高频谐振变换器在过载限流下的数字同步整流控制方法
- Digital Synchronous Rectification Control Method for High-Frequency Resonant Converters Under Overload Current Limiting Conditions
- 西安交通大学学报 2026年60卷第3期页码：175-186
- 作者机构：
  
  西安交通大学电气工程学院，710049，西安
  西安爱科赛博电气股份有限公司，710119，西安
- 作者简介：
  
  作者简介：宁煜航（2001—），男，博士生；
  王康平（通信作者），男，教授，博士生导师。
- 基金信息：
  
  国家自然科学基金资助项目(52277198);广东省重点领域研发计划资助项目(2024B0101060002);中央高校基本科研业务费资助项目。(xtr042024018)
- DOI：10.7652/xjtuxb202603017
  中图分类号： TM46
- 收稿：2025-04-16，
  
  纸质出版：2026-03-10
- 稿件说明：
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宁煜航, 白小青, 王康平, 等. 高频谐振变换器在过载限流下的数字同步整流控制方法[J]. 西安交通大学学报, 2026,60(3):175-186.

NING Yuhang, BAI Xiaoqing, WANG Kangping, et al. Digital Synchronous Rectification Control Method for High-Frequency Resonant Converters Under Overload Current Limiting Conditions[J]. Journal of Xi'an Jiaotong University, 2026, 60(3): 175-186.
宁煜航, 白小青, 王康平, 等. 高频谐振变换器在过载限流下的数字同步整流控制方法[J]. 西安交通大学学报, 2026,60(3):175-186. DOI： 10.7652/xjtuxb202603017.

NING Yuhang, BAI Xiaoqing, WANG Kangping, et al. Digital Synchronous Rectification Control Method for High-Frequency Resonant Converters Under Overload Current Limiting Conditions[J]. Journal of Xi'an Jiaotong University, 2026, 60(3): 175-186. DOI： 10.7652/xjtuxb202603017.

摘要

针对LLC谐振变换器在过载限流工况下因频率提高导致原、副边出现相移，进而造成同步整流控制困难的问题，提出一种基于数字控制的同步整流控制方法。构建了LLC变换器在过载限流工况下的等效模型，分析相移产生机理，并揭示了相移与输出电压及开关频率的关系；应用简化最优轨迹控制方法，结合状态轨迹图分析得到不同输出电压下相移特性曲线的拟合关系式；在控制器中预置相移角以有效降低运算复杂度，仅利用电压反馈信号即可实现同步整流的相移补偿，生成准确的同步整流控制信号，无需附加检测及控制电路。搭建了输入电压为270 V、输出电压为28V的半桥LLC变换器实验样机，在350～900 kHz频率范围内进行限流值为50A的过载限流实验。实验结果表明：所提出的相移补偿方法能够有效跟踪相移变化，在稳态与瞬态过程中均实现了同步整流的准确控制；所提出的数字同步整流控制方法在宽频率范围内具有良好的适应性，可有效抑制因相移引起的同步整流误动作，显著提升变换器在过载限流工况下的运行可靠性。

Abstract

To address the phase shift between primary and secondary sides caused by frequency elevation in LLC resonant converters under overload current limiting conditions

which complicates synchronous rectification control

this study proposes a digital synchronous rectification control method.An equivalent model of the LLC converter under overload currentlimiting conditions is established to analyze the phase shift generation mechanism and reveal the relationship between phase shift

output voltage

and switching frequency.By applying a simplified optimal trajectory control approach and analyzing state trajectory diagrams

fitting equations for phase shift characteristics under varying output voltages are derived.A phase shift angle is preset in the controller to reduce computational complexity.Only voltage feedback signals are required to achieve phase shift compensation for synchronous rectification

generating accurate control signals without additional detection or control circuits.A half-bridge LLC converter prototype with 270 V input voltage and 28 V output voltage is built for overload current-limiting experiments with a 50 A current limit across a 350—900 kHz frequency range. The experimental results demonstrate that the proposed phase shift compensation method effectively tracks phase shift variations

achieving precise synchronous rectification control in both steady-state and transient processes.The proposed digital synchronous rectification control method exhibits strong adaptability across wide frequency ranges and effectively suppresses malfunctions caused by phase shifts

significantly enhancing the operational reliability of the converter under overload current limiting conditions.

关键词

Keywords

references

SCHEFER H, FAUTH L, KOPP T H, et al. Discussion on electric power supply systems for all electric aircraft[J].IEEE Access, 2020, 8：84188-84216.

王建冈，阮新波，陈军艳.航空用大功率模块电源的设计及关键技术应用研究[J].电工技术学报，2005，20(12)：95-100.

WANG Jiangang，RUAN Xinbo，CHEN Junyan.Development of high power aviation modular power supply and research on key application technologies[J]. Transactions of China Electrotechnical Society，2005，20(12)：95-100.

吕弘，袁海文，张莉，等.基于模式重要度的航空电源系统可靠性估计[J].航空学报，2010，31(3)：608-613.

LÜ Hong，YUAN Haiwen，ZHANG Li，et al. Aircraft electrical power system reliability estimation based on pattern importance[J].Acta Aeronautica et Astronautica Sinica，2010，31(3)：608-613.

WEI Baoze, MARZÀBAL A, PEREZ J, et al. Overload and short-circuit protection strategy for voltage source inverter-basedUPS[J].IEEE Transactions on Power Electronics, 2019, 34(11)：11371-11382.

LEE F C, LI Qiang, NABIH A.High frequency resonant converters：an overview on the magnetic design and control methods[J].IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021, 9 (1)：11-23.

ZHANG Weimin, WANG F, COSTINETT D J, et al. Investigation of gallium nitride devices in high-frequency LLC resonant converters[J].IEEE Transactions on Power Electronics, 2017, 32(1)：571-583.

WEI Yuqi, LUO Quanming, MANTOOTH H A. Synchronous rectification for LLC resonant converter：an overview[J].IEEE Transactions on Power Electronics, 2021 , 36(6)：7264-7280.

刘和平，陈红岩，苗轶如，等.混合式LLC电路谐振与同步整流数字式控制[J].中国电机工程学报，2015，35(9)：2272-2278.

LIU Heping，CHEN Hongyan，MIAO Yiru，et al. Hybrid LLC circuit resonant and synchronous rectifier digital control[J].Proceedings of the CSEE，2015，35(9)：2272-2278.

LI Qiqi, LIU Bangyin, ZHENG Ruichang, et al. Constant resonant current limiting strategy for LLC converter without current sensing[J].IEEE Transactions on Power Electronics, 2016, 31(9)：6756-6764.

ZHU Xinyi, LI Haoran, ZHANG Zhiliang, et al. A sensorless model-based digital driving scheme for synchronous rectification in 1-kV input 1-MHz GaN LLC converters[J].IEEE Transactions on Power Electronics, 2021 , 36(7)：8359-8369.

施云鹏，胡长生，张俊哲，等.多工作模式LLC变换器同步整流控制[J].电工技术，2024(23)：18-23.

SHI Yunpeng，HU Changsheng，ZHANG Junzhe，et al. Synchronous rectification control of multi mode LLC converter[J].Electric Engineering，2024(23)：18-23.

WANG Kangping, LI Hongchang, YU Zheyuan, et al. An isolated capacitor-compensated current sensing method for high-frequency resonant converters[J]. IEEE Transactions on Power Electronics, 2019, 34 (7)：6009-6013.

吕征宇，李佳晨，杨华.新型LLC谐振变换器数字同步整流驱动方式[J].电机与控制学报，2018，22(1)：16-22.

LÜ Zhengyu，LI Jiachen，YANG Hua.Digital synchronous rectification driving method for LLC resonant converter[J].Electric Machines and Control，2018，22(1)：16-22.

FENG Weiyi, LEE F C, MATTAVELLI P, et al. A universal adaptive driving scheme for synchronous rectification in LLC resonant converters[J]. IEEE Transactions on Power Electronics, 2012, 27 (8 )：3775-3781 .

刘文军，易俊宏，马红波.同步整流双谐振LLC-DCX悬浮控制电源研究[J].电机与控制学报，2017，21 (6)：18-25 .

LIU Wenjun，YI Junhong，MA Hongbo.Double resonant LLC-DCX with synchronous rectifier based power supply for maglev control system applications[J]. Electric Machines and Control，2017，21(6)：18-25.

ERICKSON R W, MAKSIMOVI Cˊ D.Fundamentals of power electronics[M].3rd ed.Cham, Switzerland：Springer International Publishing, 2000.

TENG J H, CHEN S S, CHOU Zhixuan, et al. Novel half-bridge LLC resonant converter with variable resonant inductor[J].IEEE Transactions on Industry Applications, 2023, 59(6)：6952-6962.

赵烈，裴云庆，刘鑫浩，等.基于基波分析法的车载充电机CLLC谐振变换器参数设计方法[J].中国电机工程学报，2020，40(15)：4965-4976.

ZHAO Lie，PEI Yunqing，LIU Xinhao，et al. Design methodology of CLLC resonant converters for electric vehicle battery chargers[J].Proceedings of the CSEE，2020，40(15)：4965-4976.

YANG Bo.Topology investigation for front end DC/DC power conversion for distributed power system[D]. Blacksburg, VA, USA：Virginia Polytechnic Institute and State University, 2012：94-140.

朱立泓.LLC谐振变换器的设计[D].杭州：浙江大学，2006：16-28.

FENG Weiyi, LEE F C, MATTAVELLI P.Simplified optimal trajectory control (SOTC ) for LLC resonant converters[J].IEEE Transactions on Power Electronics, 2013, 28(5)：2415-2426.

FEI Chao, LEE F C, LI Qiang.Light load efficiency improvement for high frequency LLC converters with simplified optimal trajectory control (SOTC)[C]//2015 IEEE Energy Conversion Congress and Exposition (ECCE).Piscataway, NJ, USA：IEEE, 2015：1653-1659.

刘硕，张方华，任仁.全桥LLC变换器短路电流控制方法（Ⅰ）：理论分析[J].电工技术学报，2015，30（10）：226-233.

LIU Shuo，ZHANG Fanghua，REN Ren.Short-circuit current control strategy for full-bridge LLC converter（Ⅰ）：theoretical analysis[J].Transactions of China Electrotechnical Society，2015，30（10）：226-233 .

孙加祥，吴红飞，汤欣喜，等.基于整流侧辅助调控的交错并联LLC谐振变换器[J].电工技术学报，2021，36(10)：2072-2080.

SUN Jiaxiang，WU Hongfei，TANG Xinxi，et al. Interleaved LLC resonant converter with auxiliary regulation of rectifier[J].Transactions of China Electrotechnical Society，2021，36(10)：2072-2080.

FEI Chao, LEE F C, LI Qiang.Digital implementation of soft start-up and short-circuit protection for high-frequency LLC converters with optimal trajectory control (OTC)[J]. IEEE Transactions on Power Electronics, 2017, 32(10)：8008-8017.

NABIH A, AHMED M H, LI Qiang, et al. Transient control and soft start-up for 1-MHz LLC converter with wide input voltage range using simplified optimal trajectory control[J].IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021, 9(1)：24-37.

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