Author： Liu Guangyu
Publisher： Taylor & Francis Ltd
ISSN： 1543-5075
Source： International Journal of Green Energy, Vol.9, Iss.7, 2012-10, pp. : 673-684
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Abstract
Temporal performance of a generic stand-alone photovoltaic (PV) array system was simulated numerically through a dynamical modeling approach under the influence of some time-varying external variables: irradiation, temperature, and power demand. The underlying approach of solving general nonlinear equations by a robust Newton method was fundamental and powerful. Temporally and spatially nonuniform irradiation and temperature were considered as inputs to computer model during simulation. The PV power output was regulated by a DC–DC converter with or without maximum power point tracking control. A case study was performed where the PV array was dynamically and nonuniformly shaded by a passing cloud. It shows that temporal performance of the simulated system is generated in the presence of those external time-varying variables. Hence, the proposed approach is a useful tool for the analysis, design, and evaluation of PV array systems in a dynamically changing environment. Such a dynamical simulation is first of its kind to the best of our knowledge.
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