航空科学技术2025，Vol.36Issue(4)：17-28,12.DOI:10.19452/j.issn1007-5453.2025.04.003
双有源桥DC-DC变换器宽电压范围及全功率段内混合半频调制策略研究
Research on Hybrid Half-frequency Modulation Strategy for Dual Active Bridge DC-DC Converter in Wide Voltage and Full Power Range
摘要
Abstract
Compared to heavy load condition when using the conventional modulation strategy,the efficiency of dual active bridge(DAB)converter under light load condition has a large gap.In order to optimize the efficiency of the DAB converter over a wide voltage range and full power band,a hybrid half-frequency modulation(HHFM)strategy was proposed based on the conventional modulation strategy.When the converter is running in steady state,the half-frequency modulation(HFM)strategy was introduced with the optimization objective of reducing current stress.Also,the current stresses under different modes were analyzed and compared under different working conditions.The current stresses under specific working conditions are reduced by selecting the appropriate modes.What's more,the distribution ranges of the modes were determined over a wide range of voltages and in the full power band.Finally,an experimental platform of DAB converter is built and according to the experimental results,the current stress is reduced by up to 72.32%and the efficiency is increased by up to 2.5%under some operating conditions compared with traditional TPS modulation strategy.The experimental results validate the effectiveness of the proposed modulation in improving the current stress and efficiency,which proves the efficiency and feasibility of the hybrid half-frequency modulation strategy.关键词
双有源桥变换器/移相比/电流应力/调制策略/半频调制Key words
dual active bridge converter/shift ratio/current stress/modulation strategy/half-frequency modulation分类
动力与电气工程引用本文复制引用
朱家辉,纵家兴,孙鹏,韦玉麒..双有源桥DC-DC变换器宽电压范围及全功率段内混合半频调制策略研究[J].航空科学技术,2025,36(4):17-28,12.基金项目
航空科学基金(2022Z072070001) （2022Z072070001）
新能源电力系统全国重点实验室开放课题(LAPS23019) Aeronautical Science Foundation of China(2022Z07270001) （LAPS23019）
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(LAPS23019) （LAPS23019）
