6533b861fe1ef96bd12c426b

RESEARCH PRODUCT

Temperature Coefficients of Solar Cell Parameters at Maximum Power Point

Sissel Tind KristensenAlfredo Sanchez GarciaSjur Narten ChristiansenRune Strandberg

subject

010302 applied physicsPhysicsMaximum power principle02 engineering and technologyMechanics021001 nanoscience & nanotechnology01 natural sciencesTemperature measurementLinear functionlaw.inventionlaw0103 physical sciencesThermalSolar cellSensitivity (control systems)0210 nano-technologyTemperature coefficientVoltage

description

Analytical expressions for the temperature coefficients of the maximum power point voltage and current are presented. The temperature coefficients are calculated assuming the bandgap to be a linear function of the temperature and accounting for energy losses of non-radiative nature. The latter are introduced in the model through the External Radiative Efficiency. The so-called $\gamma$ parameter, which has been shown to account for the thermal sensitivity of all mechanisms determining the open-circuit voltage, appears to also play a role in the temperature coefficient of the maximum power point voltage and current. Numerical results and a comparison with experimental measurements are also presented.

yearjournalcountryeditionlanguage
2020-06-142020 47th IEEE Photovoltaic Specialists Conference (PVSC)
https://doi.org/10.1109/pvsc45281.2020.9300360