Influence of shading on electrical parameters of solar cells

Shading of solar cells not only reduces the cell power P/sub MPP/, but also changes the open-circuit voltage V/sub OC/, the short circuit-current I/sub SC/, the fill factor FF, and the efficiency /spl eta/. The authors introduce a shading factor S describing the amount of shading. From the well-known solar cell equations, the authors have calculated approximate equations for the solar cell parameters as a function of the shading factor S. They...