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Abstract

Relative indoor NOCT measurements of photovoltaic modules against a reference module of known NOCT are described. The experiment is performed in environmental conditions, determined by the reference module, which are equivalent to the internationally accepted nominal conditions. The experiment is carried out in still air (no wind simulation and control) at an irradiance correspondingly lowered to compensate for the reduced heat transfer to the environment. Air temperature is left free to vary during the experiment and its effect on experimental measurements is taken into account. The average temperature of the cells in a module is determined by V-oc measurements. The voltage temperature coefficients of the reference and test modules are determined by separate measurements on single cells of the same type as used in both modules. The accuracy in NOCT determination is of the order of one degree.

Additional information

Authors: PACE S, JRC ISPRA ESTAB. (ITALY);MAGNI M JRC ISPRA ESTAB. (ITALY), JRC ISPRA ESTAB. (ITALY)
Bibliographic Reference: 5TH EC PHOTOVOLTAIC SOLAR ENERGY CONFERENCE, KAVOURI, ATHENS (GREECE), OCT. 17-21, 1983 - WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31230 ORA
Availability: Can be ordered online
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