0000000001142044
AUTHOR
Sjur Narten Christiansen
Experimental investigation of the temperature coefficients of Vmpp and Impp in a silicon solar cell
Master's thesis Renewable Energy ENE500 - University of Agder 2019 This thesis is meant to provide an experimental investigation of the temperature coefficient(b)of Vmpp compared to Voc in amulticrystallinesilicon solar cell.With the main question being: to what degree is the temperature coefficient equal for Voc and Vmpp and how does series losses(Rs)affect the two? Also investigating the same question for Isc and Impp. Three types of multicrystalline cells have been measured using a NeonSee AAA sun simulator, for a total of 18 tested cells all produced by Elkem SolarSilicon. I-V data wascollected using temperature scan, Suns-Voc and Isc-Voc measurements, with temperatures reflecting norma…
Temperature Coefficients of Solar Cell Parameters at Maximum Power Point
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 p…