SOLAR PHOTOVOLTAIC STRING UNDER PARTIAL CONDITION WITH IRRADIANCE

Partial shadowing has a significant impact on a solar system. It is implicitly assumed that the maximum power of a partially shaded photovoltaic system constantly declines as the shading heaviness increases since photovoltaic systems work by using sun irradiance to produce electricity. The literature has suggested that this might not be the case, nevertheless. When a specific critical point is reached, the maximum power of a partially shaded solar system under a set design and partial shading pattern can be significantly less susceptible to shading heaviness. In this essay, the effect of partial shading is examined, as well as the crucial location that lowers shading heaviness. In this study, solar modules are connected in series to create a photovoltaic string. The study of the P-V characteristic curve under various numbers of shaded modules and shading heaviness implies that when the irradiance of the shaded modules reaches a specific critical point, the photovoltaic string becomes insusceptible to shading heaviness. Depending on how many shaded modules there are, the critical point may change. With regard to various solar string diameters and the number of shadowed modules in the photovoltaic string, the equation developed in this study helps to identify the critical point.