链式储能变流器在电网不平衡时的控制研究  

Control of Cascaded H-bridge Energy Storage Converter under Unbalance Condition

作　　者：张峰[1] 李睿[1] 凌志斌[1] 蔡旭[1,2] 

机构地区：[1]上海交通大学电子信息与电气工程学院风力发电研究中心,上海200240 [2]上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室,上海200240

出　　处：《电气传动》2013年第5期20-23,共4页Electric Drive

基　　金：国家高技术研究发展计划(863计划)(2011AA05A111)

摘　　要：链式电池储能变流器接入不平衡电网时,为了控制网侧各相电流对称,变流器各相储能电池簇与电网交换的有功功率不相等,这会造成储能系统各相储能电池簇荷电状态不均衡。研究了链式储能变流器在电网电压不平衡时的控制策略和采用零序电压注入的各相电池簇荷电状态均衡控制方法。通过仿真验证了控制策略的有效性。When the cascaded Hbridge battery energy storage converter is connected to unbalanced grid, in order to balance the grid phase current, the active power communicated between the grid and three phase battery clusters are unequal, which can cause state ofcharge unbalance among three phase battery clusters. The control scheme of cascaded H bridge battery energy storage converter under unbalance grid voltage condition was researched, and the phase battery clusters state of change（SOC）balance method which is realized through zero sequence voltage injection was also researched. Simulation results verify the validity of the control scheme.

关 键 词：链式变流器 电网不平衡 零序电压 

分 类 号：TM46[电气工程—电器]