Coordination of multiple grid-connected inverters for harmonic compensation  

作　　者：郭晓瑞 郭吉丰 王剑 

机构地区：[1]College of Electrical Engineering,Zhejiang University

出　　处：《Journal of Central South University》2014年第8期3126-3132,共7页中南大学学报（英文版）

基　　金：Project(51107111)supported by the National Natural Science Foundation of China

摘　　要：For multiple grid-connected inverters with active filter function,it makes sense to regulate every unit to output maximum active power from photovoltaic arrays,as well as eliminate the harmonic due to the non-linear loads connected to the electric networks.Naturally,a centralized control coordination strategy was proposed for the purpose of high facility utilization,good harmonic compensation ability and unwanted overcompensation condition.Based on a vector decoupling control scheme and generalized instantaneous reactive power theory,the solution was to allocate the harmonic eliminating task for every inverter according to the instantaneous power margin of each.The grid current always keeps sinusoidal in spite of non-linear load change and output active power change for any inverter.The simulation results validate the efficacy of the proposed coordination strategy.For multiple grid-connected inverters with active filter function, it makes sense to regulate every unit to output maximum active power from photovoltaic arrays, as well as eliminate the harmonic due to the non-linear loads connected to the electric networks. Naturally, a centralized control coordination strategy was proposed for the purpose of high facility utilization, good harmonic compensation ability and unwanted overcompensation condition. Based on a vector decoupling control scheme and generalized instantaneous reactive power theory, the solution was to allocate the harmonic eliminating task for every inverter according to the instantaneous power margin of each. The grid current always keeps sinusoidal in spite of non-linear load change and output active power change for any inverter. The simulation results validate the efficacy of the proposed coordination strategy.

关 键 词：active filter HARMONICS grid-connected inverter decoupling control COORDINATION 

分 类 号：TM464[电气工程—电器]