基于SOC的并联储能系统电流负荷分配方法  

Current Load Distribution Method Based on SOC Parallel Energy Storage System

作　　者：陈薇[1] 石帅飞 张超[1] 朱慧敏 CHEN Wei;SHI Shuai-fei;ZHANG Chao;ZHU Hui-min(School of Electrical and Automation Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《控制工程》2023年第5期779-787,共9页Control Engineering of China

基　　金：中央高校基本科研业务费专项资金资助项目(JZ2020HGQA0175)。

摘　　要：提出一种基于SOC的改进电流负荷分配方法,该方法采用均流环、电流环、电压环的三闭环结构,其中,均流控制器的电流基准由理想输出功率和储能单元电池荷电状态(state of charge,SOC)共同决定。搭建了MATLAB/Simulink仿真模型和基于TMS320F28335的并联储能系统半实物仿真平台,对比仿真了不同参数影响下系统的性能。并联储能系统中母线电压能够稳定在理想值,电流负荷能够按SOC合理分配,且各储能单元SOC能够快速收敛到均衡状态,验证了所提改进电流负荷分配方法的可行性和合理性。An improved current load distribution method based on SOC is proposed,which adopts a three closed-loop structure of the current-sharing loop,the current loop and the voltage loop.Among them,the current reference of the current sharing controller is determined by the ideal output power and the energy storage unit SOC.The MATLAB/Simulink simulation model and TMS320F28335-based semi-physical simulation platform of parallel storage system are built,the performance of the system under the influence of different parameters is compared and simulated.The bus voltage in parallel energy storage system can stabilize the ideal value,current load is distributed reasonably according to SOC,and each energy storage unit can SOC quickly converge to equilibrium state,the feasibility and rationality of the proposed improved current load distribution method are verified.

关 键 词：直流微网 并联储能系统 负荷分配 荷电状态 母线电压 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]