REVIEW OF THE STATE OF TECHNIQUES FOR ALL POWER RANGE PV INVERTERS USED AT LOW VOLTAGE GRID-CONNECTED PV SYSTEMS

摘要

An overview of the PV inverters used in the low voltage grid-connected PV systems for inverters, forall range of power, has been carried out. In order to determine the current technology of inverters, a compilation ofabove fifty manufacturers, various brands and above five hundred different models has been made and updated toJuly 2007. Datasheet and manuals have been compiled noting down their electrical output and input characteristics.Different aspects have been analyzed: the number of different models for values of power; topology option;operational DC parameters range (such as nominal power, maximum power, nominal current, voltage), operationalAC parameters range (such as nominal power, maximum power, nominal current, voltage) and inverter conversionefficiency vs. nominal power and normalized inverter size and weight.