DANSK DSF/FPREN 61853-2 PDF

This International Standard series establishes IEC requirements for evaluating PV module performance based on power (watts), energy (watt-hours) and performance ratio (PR). It is written to be applicable to all PV technologies, but may not work well for any technology where the module performance suffers from transient behavior such as light induced degradation and/or thermal annealing. Included in this standard are: test methods designed to map module performance over a wide range of temperature and irradiance conditions; test methods to determine spectral response, incidence angle effects and the module operating temperature all as functions of ambient conditions; definition of reference day irradiance and climatic profiles; methods for evaluating instantaneous and integrated power and energy results; and a method for stating these results in the form of a numerical rating. Part of 1 IEC 61853 describes requirements for evaluating PV module performance in terms of power (watts) rating over a range of irradiances and temperatures. This part (Part 2) describes procedures for measuring the performance effect of angle of incidence; the estimation of module temperature from irradiance, ambient temperature and wind speed; and impact of spectral response on module performance. IEC 61853-3 describes the calculations of PV module energy (watt-hours) ratings. IEC 61853-4 describes the standard time periods and weather conditions that can be utilized for calculating energy ratings.