电源学报2026，Vol.24Issue(2)：91-100,10.DOI:10.13234/j.issn.2095-2805.2026.2.91
CLLLC谐振变换器电流应力抑制策略
Current Stress Suppression Strategy for CLLLC Resonant Converter
摘要
Abstract
Under over-resonant operating conditions,a CLLLC resonant converter with frequency modulation control will generate excessive current stress.On the basis,a control strategy based on phase-shift frequency modulation is proposed to suppress the current stress.A resonant current model under phase-shift frequency modulation control is established by the first harmonic approximation method.According to the soft switching condition and transmission power characteristics of the converter,the phase-shift values on the primary and secondary sides of the isolation transformer are obtained.Combined with the switching frequency obtained by frequency modulation control,the resonant current stress is reduced.Finally,a circuit simulation model and an experimental system of the CLLLC resonant converter were built to verify the analytical conclusions,and results show that the proposed strategy has a significant inhibitory effect on current stress.关键词
CLLLC谐振变换器/电流应力/调频控制/软开关Key words
CLLLC resonant converter/current stress/frequency modulation control/soft switch分类
信息技术与安全科学引用本文复制引用
张新闻,刘百林,杨树德..CLLLC谐振变换器电流应力抑制策略[J].电源学报,2026,24(2):91-100,10.基金项目
宁夏自然科学基金资助项目(2023AAC03281) （2023AAC03281）
国家自然科学基金资助项目(52367018)This work is supported by Ningxia Natural Science Foundation under the grant 2023AAC03281 （52367018）
National Natural Science Foundation of China under the grant 52367018 （）
