期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2014
卷号：3
期号：6
页码：6718-6721
出版社：IJECS
摘要：When no transformer is used in a grid-connected photovoltaic (PV) system, a galvanic connection between thegrid and the PV array exists. In these conditions, dangerous ground currents (common-mode currents) can appearthrough the stray capacitance between the PV array and the ground. This current increase conducted and radiatedelectromagnetic emissions, harmonics injected in the utility grid and losses.In this paper, an improved output filter forreduction of common mode voltage and ground current in a grid connected full bridge(FB) inverter is proposed .A modelfor measurement of this ground voltage and current is build by using simulation software. Finally ground voltage andcurrent of a FB inverter using conventional LCL filter and proposed filter is measured and compared with satisfactoryresults.
