中国电机工程学报2012，Vol.32Issue(6)：1-9,9.
四桥臂微网逆变器高性能并网H-∞控制研究
High Power Quality H-∞ Control Research on Four-leg Grid-connected Inverters in Three-phase Four-wire Micro-grid
摘要
Abstract
The power quality of micro-grid inverters is affected by the grid voltage distortion,load harmonic current and the DC-side neutral point balance.In order to make the DC-side neutral voltage stable and output voltage tracking the reference,the paper modeled for four-leg inverter with the neutral leg and H-∞ control strategy was used to build high-bandwidth robust controller for the unified control of the neutral leg and the three phase leg.Simulation and experiment verify that the neutral leg can make the midpoint input current be approximately equal to the output current even when large neutral current exists and the three phase leg can guarantee the output voltage to maintain a low THD with the afferent turbulences of grid voltage and non-linear load.关键词
三相四线制/直流侧中点平衡/鲁棒控制/电压控制模式/逆变器Key words
three-phase four-wire inverter/DC neutral point balancing/robust control/voltage-controlled mode/inverters分类
信息技术与安全科学引用本文复制引用
吕志鹏,罗安,蒋雯倩,周柯,谢三军..四桥臂微网逆变器高性能并网H-∞控制研究[J].中国电机工程学报,2012,32(6):1-9,9.基金项目
国家重点基础研究发展计划项目(973项目)(2009CB219706) （973项目）
中国与欧洲政府间国际合作计划项目(2010DFA61640) （2010DFA61640）
湖南省研究生科研创新项目(CX2011B130) （CX2011B130）
