1 Scope
This document defines procedures to be followed for temperature and irradiance corrections
to the measured I-V (current-voltage) characteristics (also known as I-V curves) of photovoltaic (PV) devices. It also defines the procedures used to determine
factors relevant to these corrections. Requirements for I-V measurement of PV devices are laid down in IEC 60904‑1 and its relevant subparts.
The PV devices include a single solar cell with or without a protective cover, a sub-assembly
of solar cells, or a module. A different set of relevant parameters for I-V curve correction applies for each type of device. The determination of temperature
coefficients for a module (or sub-assembly of cells) may be calculated from single
cell measurements, but this is not the case for the internal series resistance and
curve correction factor, which should be separately measured for a module or subassembly
of cells. Refer to Annex A for alternative procedures for series resistance determination.
The use of I-V correction parameters is valid for the PV device for which they have been measured.
Variations may occur within a production lot or the type of class.
Open preview (PDF)Photovoltaic devices. Procedures for temperature and irradiance corrections to measured I-V characteristics