Measurement of module temperature coefficients
For this measurement, temperature sensors are fixed to the middle of the back of the module. A series of current-voltage characterisations are performed at different module temperatures and fixed illumination, and by applying a least-squares fit to the data, power, current and voltage temperature coefficients of the module are determined. In addition, I-V characterisations are performed at a fixed temperature under different irradiance intensities to calculate the series and shunt resistances of the module under test. A test report is prepared in accordance with ISO 17025.
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