Challenges and opportunities towards adaptive inverter sizing in Bifacial PV systems

SolarPhotovoltaic (PV) installations world-wide is currently going through transition from monofacial to bifacial technology. The bifacial photovoltaic (bPV) is replacing its counterpart modules as per the global market shares of the PV technologies.  However, with the introduction to the superior technology of generation from both the sides in the bPV systems design aspects of the complete systems needs a critical attention. This is due to the fact that the generation from a bPV system can be 30% more than that of the monofacial PV systems. Nevertheless, the formulation of the inverter sizing in most of the installations is based on the static Direct Current/ Alternating Current (DC/AC) ratio as the design decision criteria. A comprehensive literature review of various domains in bPV technology has provided detailed insights of various aspects of the system bPV design as the research gaps.  The unsolved problems in bPV system design to address the issues of bifaciality with inverter clipping losses and estimation of dynamic DC/AC ratio provides opportunity of further research in this direction. This paper presents such unexplored areas of bPV system design alongside the framework towards the transition from fixed inverter sizing to adaptive sizing thereby minimizing the clipping losses and increasing the generation from the bPV system.