Strategic Study of CAE >> 2007, Volume 9, Issue 6
Theoretical analysis and calculation for filling factor of solar cellvarying along with illumination intensity
1. Department of Thermal Science and Energy Engineering of University of Science and Technology of China, Hefei 230027, China ;
2. Research Center for Photovoltaic System Engineering Ministry of Education, Hefei Industry Technology University, Hefei 230009, China
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Abstract
Based on the solar cell DC model and the mathematic expression of maximum power point, the equations describing short circuit current, open circuit voltage, maximum power current, voltage and filling factor varying along with the illumination intensity are deduced and calculated with two real solar cells data. The fact that short circuit current and maximum power current are proportional to the illumination intensity, and open circuit voltage and maximum power voltage are proportional to the natural logarithm of illumination intensity is certified. The relation of filling factor varying along with the illumination intensity is not a simple functional expression and effected by the solar cell model parameters is present. A simulated experiment is established to valid the theoretic analysis and calculating by Multisim.
Keywords
solar cell ; illumination intensity ; output characteristics ; filling factor
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