摘要
模块化多电平变换器(Modular Multilevel Converter,MMC)子模块直流侧加入储能电池即构成储能型MMC换流器,无需额外的功率转换装置即可对交、直流电网提供有功功率支撑。文中分析了储能型MMC换流器的复杂工况,针对性地提出了基于直流功率、交流功率的相间、桥臂间与模块间三级荷电状态(state of charge,SOC)均衡控制策略,并通过仿真和实验验证了所提策略的正确性。
The DC side of the MMC(Modular Multilevel Converter)sub-module with the battery energy storage will form MMC based BESS(Battery Energy Storage System),which can provide active power support to AC and DC power grids without an additional power conversion device.In this paper,the complex operating conditions of energy storage MMC converters are analyzed,and the equalization control strategy of three-stage state of charge(SOC)based on DC power,AC power,and bridge arm and modules is proposed,and the correctness of the proposed strategy is verified by simulation and experiment.
作者
陈强
张鲁华
吴延俊
郜登科
邹毅军
Chen Qiang;Zhang Luhua;Wu Yanjun;Gao Dengke;Zou Yijun(Shanghai KeLiang Information Tech,&Eng.Co.,Ltd.,Shanghai 200233,China)
出处
《电测与仪表》
北大核心
2020年第5期37-43,共7页
Electrical Measurement & Instrumentation
基金
上海市经信委发展专项资金(ZXQY-01-16-2752)。
关键词
电池储能系统
MMC
SOC均衡
零序电压
battery energy storage system(BESS)
MMC
SOC equalization
zero-sequence voltage
