电力系统保护与控制2025，Vol.53Issue(10)：78-86,9.DOI:10.19783/j.cnki.pspc.241040
储能变流器有源前端模块化交错并联环流抑制
Circulating current suppression in the modular interleaved parallel active front-end of energy storage converters
摘要
Abstract
To address the zero-sequence circulating current issue caused by modular interleaved parallel connections in active front-ends of energy storage converters connected in parallel on both AC and DC sides,an improved circulating current suppression strategy based on a deadbeat algorithm is proposed.First,the effect of interleaved modulation among parallel modules on circulating current is analyzed.Second,a mathematical model of the system is established in the three-phase stationary coordinate system,along with an equivalent circuit of circulating current in the interleaved parallel system.Then,a circulating current controller is designed,where the control algorithm derives the zero-vector modulation parameters for each module by calculating the magnitude of the circulating current.Next,the zero vectors in the space vector pulse width modulation(SVPWM)process of the respective modules are adjusted to suppress the circulating current.Finally,experimental results verify that the proposed method can effectively suppress circulating current and achieve current sharing control,improving system efficiency by 2.1%.关键词
储能变流器有源前端/多模块并联/交错调制/无差拍算法/环流抑制Key words
active front-end of energy storage converter/multi-module parallel connection/interleaved modulation/deadbeat algorithm/circulating current suppression引用本文复制引用
张国澎,华森,刘渤,郑征,陶海军,李常志..储能变流器有源前端模块化交错并联环流抑制[J].电力系统保护与控制,2025,53(10):78-86,9.基金项目
This work is supported by the National Natural Science Foundation of China(No.52267018). 国家自然科学基金项目资助(52267018) （No.52267018）
河南省国际科技合作项目资助(232102520017) （232102520017）
河南省科技攻关项目资助(222102220014) （222102220014）
