Multifunctional Grid Interactive Solar Photovoltaic Systems: A Comprehensive Review

The multifunctional grid-connected inverter (MFGCI's) has drawn a significant attention among researchers because of its ancillary services including active power injection into utility grid while also serving as an active power quality conditioner (APLC) to enhance the power quality (PQ). It should be noted that the application of a multifunctional inverter is specifically increased to integrate renewable and sustainable energy sources like solar photovoltaic (SPV) and wind turbine (WT) in distributed energy resources (DERs) and microgrid (MGs), where the aim is to diminish the transmission and distribution losses considerably by generating power at one place and serving the load requirement of nearby localities. In view of this, various configurations used in MFGCI's are presented along with their detailed comparative study. Furthermore, control strategies employed in single and three-phase MFGCI's are comprehensively reviewed. Additionally, an in-depth explanation, comparison and discussion on MFGCIs are accomplished. Beside this, the author has also made an attempt to provide a detailed explanation on future scopes of MFGCIs in DERs and MGs.