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Standards Development
This part of IEC 61853 describes the calculation of PV module energy rating values. IEC 61853-1 describes requirements for evaluating PV module performance at various temperatures and irradiances in terms of power (watts) rating. IEC 61853-2 describes test procedures for determining module temperature from irradiance, ambient temperature and wind speed, methods for measuring angle of incidence effects, and spectral responsivity. IEC 61853-4 describes the standard reference climate profiles (standard environmental data sets) that are used for calculating energy rating values.
The purpose of this document is to define a methodology to determine the PV module energy output (watt-hours), and the Climate-Specific Energy Rating (CSER, dimensionless) for a complete year at maximum power operation for the reference climate profile(s) given in IEC 61853-4. It is applied to determine a specific module output in a standard reference climate profile for the purposes of comparison of rated modules.
The methodology does not consider either progressive degradation or transient behaviour such as light induced changes and/or thermal annealing.
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