适用于大容量储能系统的级联H桥和模块化多电平逆变器分析比较  

Analysis and Comparison of Cascaded H-Bridge and Modular Multi-Level Converters Suitable for Large-Capacity Energy Storage System

作　　者：曹炜 徐永海 李善颖[2] 吴涛[2] 

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),北京102206 [2]华北电力科学研究院有限责任公司,北京100045

出　　处：《电网与清洁能源》2016年第4期30-37,共8页Power System and Clean Energy

基　　金：国家863高技术基金项目(2011AA05A113)~~

摘　　要：大容量储能系统(energy storage system,ESS)一般需要通过功率转换系统(power conversion system,PCS)并入电网中,目前大容量PCS较为先进拓扑主要有级联H桥结构和模块化多电平结构。对结合储能系统的级联H桥逆变器和模块化多电平逆变器进行了仿真和分析,将它们在可靠性、输出效率、经济性等多方面进行评估比较,分析结果表明2种拓扑各具特色的同时也不可避免的存在不足,对此提出了适用于大容量储能系统输出拓扑的建议。ABSTRACT：Large-capacity energy storage system （ESS）is normally connected to the grid through the power conversion system （PCS）. Currently,cascaded H-bridge converter（CHC） and modular multilevel converter（MMC）are two most advanced topologies for PCS. In this paper,CHC and MMC inverters connected with ESS are simulated and analyzed,and compared in aspects of reliability,output efficiency and cost. The results show that while the two topologies have their own merits,they also have their shortcomings. Suggestions for the topology suitable for large-capacity multilevel output are proposed in the paper.

关 键 词：储能系统 功率转换系统 级联H桥 模块化多电平 

分 类 号：TM46[电气工程—电器]