DIRECT NORMAL IRRADIANCE FOR RATING C-SYSTEMS

摘要

The work describes a method for determining the Direct Normal Irradiance (DNI) for rating PV concentrator systems, best known as C-Systems. It is based on finding the DNI that produces more Direct Normal Energy during the whole year for a specific location, rather than determining an arbitrary or peak DNI value. Since DNI is not normally measured on weather stations, a mathematical method based on stochastically generated DNI hourly values obtained from monthly global horizontal irradiation values proposed by J. Remund et al. is used. The work is enclosed under the C-Rating project founded by the 5th FP of EC.