电力系统保护与控制2026，Vol.54Issue(3)：12-21,10.DOI:10.19783/j.cnki.pspc.250599
LCL-T谐振型DAB变换器的ITPS调制策略与ZVS性能优化
ITPS modulation strategy and ZVS performance optimization for LCL-T resonant DAB converters
摘要
Abstract
To address the inability of conventional dual active bridge(DAB)converters to simultaneously achieve zero backflow power and global soft switching under wide input voltage variations,an improved triple-phase-shift(ITPS)modulation strategy for LCL-T resonant DAB converters is proposed.First,the power transfer characteristics and soft-switching behaviors of the LCL-T resonant DAB converter are analyzed,deriving the control variable expressions for achieving zero backflow power under different voltage conversion ratios.Subsequently,by leveraging the symmetry of the LCL resonant network and incorporating ZVS constraints considering switching device parasitic capacitances,unified ITPS modulation control expressions are derived that are continuous over the entire operating range,have a uniform form,and require low computational effort,with the modulation trajectories further optimized.Finally,a 1 kW experimental prototype validates the effectiveness of the proposed modulation strategy.Experimental results demonstrate that the ITPS modulation strategy achieves a wider input voltage range,zero backflow power,and global soft-switching capability,compared to conventional modulation strategies.关键词
LCL谐振/双有源桥/宽电压范围/零回流功率/零电压开关/三重移相调制Key words
LCL resonant/dual active bridge(DAB)/wide voltage range/zero backflow power/zero-voltage switching(ZVS)/triple-phase-shift modulation引用本文复制引用
王党树,杨黎康,孙龙,吴家驹,贾如琳..LCL-T谐振型DAB变换器的ITPS调制策略与ZVS性能优化[J].电力系统保护与控制,2026,54(3):12-21,10.基金项目
This work is supported by the Special Project of Major Natural Disaster Prevention and Control and Public Safety of National Key Research and Development Program of China(No.2023YFC3009800). 国家重点研发计划重大自然灾害防控与公共安全专项资助(2023YFC3009800) （No.2023YFC3009800）
