Electrical Characteristics of a Solar Cell/PV Module
Abstract
is formed by series/parallel combination of solar modules. Some operating conditions result
in non-uniform irradiance of PV array, such as shadows, clouds, dirt, debris, bird droppings,
different orientations and tilts, and so on. If several solar cells in a series PV module are
mismatched due to non-uniform irradiance, these cells will limit the output current of normal
cells. This leads to decrease of the output power, even generates hot-spot and causes damage
to these cells. To avoid the destructive effects of hot- spot, a bypass diode is connected in
parallel with a PV module or parallel with some series-connected solar cells in a PV module,
which creates a replacement path. To model solar cell, the one-diode model has been proposed,
and some researchers have studied how to extract parameters for the model. For a
higher accuracy, two- diode model has been studied for years. In this research work, some
methods were developed to determine the electrical parameters in these models. The
electrical characteristics of a solar cell/PV module derived from those proposed models
match the experimental data well when irradiance is uniform.
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DOI: https://doi.org/10.37628/ijaic.v3i2.683
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