无功补偿与储能集成系统中H桥级联型功率变换器相内SoC快速均衡  

Fast Intra-Phase SoC Balancing for the H-Bridge Cascaded Power Converter in the Integrated System of Energy Storage and Reactive Power Compensation

作　　者：杜少通[1,2] 武斌斌 任鑫 郭向伟 朱军 DU Shaotong;WU Binbin;REN Xin;GUO Xiangwei;ZHU Jun(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454003,Henan,China;Henan Key Laboratory of Intelligent Detection and Control of Coal Mine Equipment,Jiaozuo 454003,Henan,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003 [2]河南省煤矿装备智能检测与控制重点实验室,河南焦作454003

出　　处：《电网与清洁能源》2024年第6期58-66,共9页Power System and Clean Energy

基　　金：国家自然科学基金项目(52267018)。

摘　　要：无功补偿与储能集成系统应用于风、光电站具有经济性,其中H桥级联型功率变换器具有低功率因数运行特点,提升其相内SoC均衡速度有助于提升电池安全和储能系统容量利用率。在调制约束下,考虑相内SoC均衡中电压无功分量的叠加,分析不同功率因数时功率单元的SoC均衡能力。基于分析,提出相内SoC的快速均衡方法,设计均衡控制电压有功分量叠加方法,充分利用功率单元的SoC均衡能力。基于各功率单元叠加的电压有功分量设计相应单元的无功分量叠加方法,提升功率单元的SoC均衡能力。仿真分析验证了相内SoC快速均衡控制的有效性。Application of the integrated system of reactive power compensation and energy storage in wind and photovoltaic stations has economic benefits,and the H-bridge cascaded power converter in this system is characteristic of low power factor operation,and boosting its intra-phase SoC balancing speed helps to improve battery safety and energy storage system capacity utilization.Considering the superimposed voltage’s reactive components in the intra-phase SoC balancing,the SoC balancing ability of power units at different power factors is analyzed with modulation constraints.Based on this analysis,a fast intra-phase SoC balancing is established and the balanced control voltage active component superposition method is designed to fully utilize the SoC balancing ability of power units.The reactive power component superposition method is designed based on the voltage active components superimposed on each power unit to enhance the SoC balancing ability of the power unit.The simulation analysis has verified the effectiveness of the intra-phase SoC fast balancing control.

关 键 词：无功补偿 储能系统 级联H桥 相内SoC均衡 

分 类 号：TM46[电气工程—电器]