电网技术2026，Vol.50Issue(1)：345-354,中插150-中插157,18.DOI:10.13335/j.1000-3673.pst.2025.0106
基于MMC的电动汽车非等容退役锂电池能量均衡控制策略
Energy Balancing Control Strategy for Non-equal Capacity Retired Lithium Batteries in Electric Vehicles Based on MMC
摘要
Abstract
Due to differences in installation capacity and retirement time,the capacity of retired lithium batteries(RLB)for electric vehicles is difficult to maintain consistently.However,the existing energy balancing schemes based on modular multilevel converters(MMC)cannot balance the energy of non-equal capacity RLB.Therefore,an energy balancing scheme for non-equal capacity RLB of electric vehicles based on high-level high-power MMC is proposed,and the state of charge(SOC)parameter of RLB is used to characterize the energy state of RLB.The impact of capacity differences on SOC balance is analyzed.The active power redistribution modules for the MMC upper and lower bridge arms,phase to phase,and sub module(SM)RLB are designed,which achieves output active power of RLB proportional to its capacity,and eliminates the impact of capacity differences on SOC balancing.An improved three-level SOC balancing control strategy is proposed to achieve SOC balancing of RLB in the MMC upper and lower bridge arms,interphase,and intra SM.The simulation results of Matlab/Simulink and the experimental results of the low-power experimental platform show that the proposed scheme can achieve SOC balance of equal/non-equal capacitance RLB in MMC upper and lower bridge arms,phase to phase,and SM.关键词
模块化多电平变换器/电动汽车/非等容退役锂电池/有功功率分配/荷电状态均衡Key words
modular multilevel converter/electric vehicle/non-equal capacity retired lithium batteries/active power distribution/state of charge balancing分类
信息技术与安全科学引用本文复制引用
吴青峰,王策,刘立群,王腾光,薄利明..基于MMC的电动汽车非等容退役锂电池能量均衡控制策略[J].电网技术,2026,50(1):345-354,中插150-中插157,18.基金项目
山西省基础研究计划面上项目(202203021221153) （202203021221153）
山西省研究生教育创新项目(2025SJ366).Project Supported by General Project of Shanxi Provincial Basic Research Program(202203021221153) （2025SJ366）
Shanxi Province Graduate Education Innovation Project(2025SJ366). （2025SJ366）
