电源学报2025，Vol.23Issue(2)：274-282,9.DOI:10.13234/j.issn.2095-2805.2025.2.274
高频变流器直流侧的去耦电容优化选型研究
Research on Optimal Selection of Decoupling Capacitors on DC-side of High-frequency Converters
摘要
Abstract
The switching speed and switching frequency of converters keep increasing,and higher requirements are also imposed on the DC-side decoupling capacitors.To solve the problems of overvoltage spikes and decoupling capacitor losses caused by voltage and current oscillations during the switch-off process,a transient circuit model considering the system's stray parameters is established,and the evolution of overvoltage and decoupling capacitor current oscillation is analyzed.On this basis,a loss model considering the parasitic parameters of the main circuit and the equivalent series resistance of the decoupling capacitor is proposed.The limiting factors for the selection of decoupling capacitors in practical engineering are quantitatively analyzed,and an optimal selection method for the decoupling capacitance and loss limit condition is obtained.Finally,the proposed model and analysis method were verified by simulation and experimental results.关键词
开关过程/杂散参数/去耦电容/损耗模型Key words
Switching process/stray parameter/decoupling capacitor/loss model分类
信息技术与安全科学引用本文复制引用
陈文思,宫金武,查晓明,陈佳洛,潘尚智..高频变流器直流侧的去耦电容优化选型研究[J].电源学报,2025,23(2):274-282,9.基金项目
国家自然科学基金资助项目(52177191) （52177191）
国防科工局稳定支持资助项目(6142217200403)This work is supported by National Natural Science Foundation of China under the grant 52177191 （6142217200403）
State Administration of Science,Technology and Industry for National Defense under the grant 6142217200403 （）
