Design of a Multiparameter Acquisition System for Photovoltaic Panels

This work represents an effective method of energy prediction that would be produced by photovoltaic systems and a valid tool of their characterization. The prediction of the energy produced by a photovoltaic system is generally made through software which uses algorithms which describe the trend of the efficiency of the panels depending on the temperature, the radiation and, in more sophisticated cases, depending on the incident spectrum features. These algorithms use empiric coefficients which often depend on the special device and they are hard measurable and controllable. So the degree of reliability of the prediction of a given software can be high for a certain number of devices and can be low for other panel typologies according to the algorithms used and to the accuracy which coefficients were obtained with. Therefore we tried to plan and implement a measurement system for all the photovoltaic panel typologies, using a panel test laboratory and giving the possibility of studying the behaviour in real conditions of working of various device typologies, in climatic situations like those of Lecce city (Italy). This method can be extended to every typology of photovoltaic panel installed in any place