Power Inverter Topologies for Solar Photovoltaic System

This review paper deals with the latest development of inverters for solar photovoltaic AC Modules. The power of the inverters ranges from 90 watts to 500 watts. This range covers most commercial PV modules. Self-commutated and also multilevel inverters (MLIs) have replaced the grid-commutated inverters. The same applies to the low-frequency and the high-frequency transformers, which are used for the adaptation of the voltage levels. AC Modules offer the advantage of modular design and flexibility. This leads to the market opening for photovoltaic power for everybody at low costs due to the plug-and-play concept and also the possibility of enlarging the system.