电力系统自动化2017，Vol.41Issue(8)：38-44,7.DOI:10.7500/AEPS20160923008
面向微电网三相电压不平衡补偿的逆变器并网控制
Grid-connected Control for Inverters Oriented to Microgrid with Unbalance Compensation for Three-phase Voltage
摘要
Abstract
With the increase in microgrid scale and mixture of single phase and three-phase load, the phenomenon of voltage imbalance of microgrid is becoming more and more serious.In order to solve this problem, a three-phase output interconnection and controllable scheme of grid-tied inverter is proposed by using the characteristic that output voltage and current of the three-phase four-leg inverter can be decoupled and controlled independently.The output power of each phase is adaptively controlled according to the voltage unbalance degree.On the basis of establishing the average equivalent model and the unbalanced state transition model, the grading control strategy of three-phase output current of the inverter is presented to compensate for unbalanced voltage of the microgrid.Simulation and experimental results show that the method presented is effective for voltage compensation.关键词
微电网/三相四桥臂逆变器/电压不平衡度/自适应调节Key words
microgrid/three-phase four-leg inverter/voltage unbalance degree/adaptive control引用本文复制引用
王吉彪,陈启宏,刘莉,张立炎,全书海..面向微电网三相电压不平衡补偿的逆变器并网控制[J].电力系统自动化,2017,41(8):38-44,7.基金项目
国家自然科学基金资助项目(61374050).This work is supported by National Natural Science Foundation of China (No.61374050). （61374050）
