Solar bifacial module field

What are bifacial and monofacial solar cells?

Front and rear view of monofacial and bifacial photovoltaic (PV) modules . Bifacial solar cells encased in a glass/backsheet structure provide more power under standard test conditions (STC) than glass/glass PV bifacial modules.

Why are bifacial modules used in large-scale photovoltaic systems?

Due to self-shading and the decrease in irradiance reflected by the ground, using bifacial modules in large-scale photovoltaic systems will result in less bifacial gain compared to smaller-scale systems. The optimum tilt angle for the south-facing module depends on location, elevation, and albedo.

What is a bifacial solar module?

In contrast to its monofacial counterpart, a bifacial solar module collects light from both the front and rear sides, allowing it to better use diffuse and albedo light, see Fig. 1 (a). For example, Cuevas et al. have demonstrated a bifacial gain up to 50% relative to identically oriented and tilted monofacial modules.

How bifacial PV modules can be characterized using a solar simulator?

In the process of characterizing the output power of bifacial PV modules using a solar simulator, three key steps are involved: establishing the bifaciality factor under standard test conditions (STC), assessing the power gain by examining the yield of rear-irradiance, and determining the output power at rear irradiances of 100 and 200 W/m 2 .