A Comprehensive Review of Grid-Connected PV Systems Based on Impedance Source Inverter

The increase in linking photovoltaic (PV) power plants to utility grids are due the world expansion PV systems and its advantages of low running cost, renewable, etc. Although is now considered one main sources many countries, it has efficiency. Therefore, big issue improve efficiency enhance interface inverters’ Different inverter topologies have been proposed relate panels; each disadvantages. These can be classified into two-stage single-stage (impedance network) inverters. Impedance network inverters overcome problems traditional seek realize a system reduce number conversions. However, authors’ best knowledge, there no comprehensive review applications impedance source for system, including control techniques. this paper reviewed existing by paying attention four key research issues: 1) various discusses structures from point view application, 2) techniques suitable inverters, comparing them terms complexity theoretical performance, 3) investigation most important methods used connect output current with voltage, 4) Challenges future direction. Finally, provided as brief reference help researchers choose appropriate their preferred modulation type.