MIHAYLOV, B.V. ... et al, 2013. Uncertainty considerations of indoor PV module calibration based on Monte Carlo simulations. EU PVSEC 2013, 28th European PV Solar Energy Conference, Paris, France, 30th September - 4th October 2013, pp.3536-3540.
Uncertainties in the calibration of PV devices affect the power rating of modules and thus their value.
The expanded measurement uncertainty in Pmax of modules at state-of-art indoor calibration facilities is between 1.6-
3.85% based on conventional Si technologies. The uncertainties of TF technologies are agreed to be higher. The
contributions from different uncertainty sources are combined according to the GUM Uncertainty Framework. The
Framework has the limitation of considering only the mean and standard deviation of symmetric distributions. This
paper advocates the use of the Monte Carlo (MC) method for calculating the overall uncertainty of module calibration
that is specific to the device-under-test and the measuring setup. Since the MC method retains all the information
from the input quantities, more comprehensive probability density functions can be assigned to the main contributors.
Recognised systematic effects can be accounted for by assigning asymmetric distributions to given contributions
eliminating the need for correction. The use of the MC method for the total uncertainty calculation allows for a more
detailed estimation of the input influences and their understanding and minimisation. In the simulated case study this
led to reduction in uncertainty from ±2.5% in Isc to [+1.93%:-1.97%] for a 95% coverage interval.
The definitive version is available on the the EU PVSEC Proceedings website http://www.eupvsec-proceedings.com/proceedings?paper=23295