电源学报2025，Vol.23Issue(2)：75-85,11.DOI:10.13234/j.issn.2095-2805.2025.2.75
三相链式储能变换器相间SOC均衡最大环流功率控制
Maximum Circulating Current Power Control for Phase-to-phase SOC Balance Applied to Three-phase Chain-link Energy Storage Converter
摘要
Abstract
Three-phase chain-link energy storage converters(TPCLESCs)are promising in enhancing the controllability of renewable energy in power grid,such as wind and solar power.Aimed at the problem of state-of-charge(SOC)imbalance of energy storage battery among phases of a TPCLESC,a phase-to-phase SOC balance method based on phase-to-phase circulating current power closed-loop control is proposed.Through the zero-sequence voltage injection into phases a,b and c,the active circulating current among phases is generated to realize the SOC balance in the three-phase energy storage battery groups.A mathematical model of the maximum phase-to-phase circulating current power of the chain-link energy storage converter and SOC deviation is established.On this basis,the phase-to-phase SOC balance in battery groups is realized at the maximum circulating current power through the phase-to-phase circulating current active power closed-loop control.As a result,the phase-to-phase SOC reaches its balance at the maximum speed,and the process of phase-to-phase SOC balance is accelerated.Finally,the correctness and feasibility of the proposed method were verified by a MATLAB simulation model and an experimental platform.关键词
注入零序电压/荷电状态均衡/并网系统/相间环流功率Key words
Zero-sequence voltage injection/state-of-charge(SOC)balance/grid-connected system/phase-to-phase circulating current power分类
信息技术与安全科学引用本文复制引用
杨春来,袁晓磊,郝伟杰,殷喆,李剑锋,阚志忠..三相链式储能变换器相间SOC均衡最大环流功率控制[J].电源学报,2025,23(2):75-85,11.基金项目
国网河北省电力有限公司科技项目(kj2021-047)This work is supported by State Grid Hebei Electric Power Co.,Ltd.Science and Technology Project under the grant kj2021-047 （kj2021-047）
