电源学报2024，Vol.22Issue(2)：1-9,9.DOI:10.13234/j.issn.2095-2805.2024.2.1
一种基于自由衰减振荡的固定占空比控制的无铁芯变压器
Coreless Transformer under Constant Duty Control Based on Free Decay Oscillation
摘要
Abstract
Aimed at the problem that DC-DC converters with coreless transformers must operate at high frequen-cies,a DC-DC converter with a coreless transformer based on free decay oscillation is proposed.First,a circuit model in series-series topology with no excitation sources is established,the evolution of the eigenvalue is discussed,and the free decay oscillation behavior of the system is analyzed.Second,the DC-DC converter with a coreless transformer based on free decay oscillation is designed.The switching frequency of this converter can be significantly lower than the operating frequency of the coreless transformer,and the output power from the converter and the operating frequency of the core-less transformer can be described by the eigenvalue of the free decay oscillation system.Finally,an experimental proto-type was constructed,which was under constant duty control.The switching frequency of the converter was reduced to one half(103 kHz)and one third(69 kHz)of the operating frequency of the coreless transformer(206 kHz),respective-ly.The converter efficiency achieved 91.2％,and the transformer efficiency was always higher than 96％.关键词
无铁芯变压器/自由衰减振荡/电路理论/DC-DC变换器/固定占空比控制Key words
Coreless transformer/free decay oscillation/circuit theory/DC-DC converter/constant duty control分类
信息技术与安全科学引用本文复制引用
戴晨皓,张波..一种基于自由衰减振荡的固定占空比控制的无铁芯变压器[J].电源学报,2024,22(2):1-9,9.基金项目
国家自然科学基金重点资助项目(52130705)This work is supported by the Key Program of National Natural Science Foundation of China under the grant 52130705 （52130705）
