Title of article :
Dynamic Analysis of Performance of Photovoltaic Generators under Moving Cloud Conditions
Author/Authors :
Ndubuisi Nnamchi, Stephen Department of Mechanical Engineering - Kampala International University, Uganda , Adanma Nnamchi, Onyinyechi Department of Agricultural Engineering and Bio Resources - Michael Okpara University of Agriculture, Nigeria , Dorcas Sanya, Oluwatosin Department of Electrical/Telecommunication/Computer Engineering - Kampala International University, Uganda , Mundu, Muhamad Department of Physical Sciences - Kampala International University, Uganda , Gabriel, Vincent Department of Electrical/Telecommunication/Computer Engineering - Kampala International University, Uganda
Abstract :
Dynamic analysis of performance of photovoltaic generators (PVG) under moving cloud conditions has been
successfully carried out. The research work aims at eliminating under-performance contributed by the
manufacturer’s specification. The PVG characteristics were simulated in Microsoft Excel environment under
simple and superimposed conditions, designating mild and strong cloud conditions, respectively with modified and
unmodified PVG parameters. Concurrently, field measurement of the performance characteristics of PVG was
carried out at KIU (0.3476oN, 32.5825oE) upon which the façade in the specification was estimated and reduction
in output power under the aforementioned conditions were computed. The power reduction becomes colossal
during the superimposed condition. Besides, common operational problems like transients in output voltage and
power are remarkable. Thus, the under-performance in large PVG could be narrowed by scaling down the
manufacturer’s rating or applying the correction factor recommended by this work in large PVG design, hence,
leaving the design engineers with the moving cloud problems.
Keywords :
Dynamics , analysis , performance rating , PVG , simple and superimposed cloud conditions
Journal title :
Journal of Solar Energy Research
