Modeling the Irradiance and Temperature Dependence of Photovoltaic Modules in PVsyst

• Published in: IEEE journal of photovoltaics Vol. 5; no. 1; pp. 152 - 158
• Main Authors: Sauer, Kenneth J., Roessler, Thomas, Hansen, Clifford W.
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.01.2015; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Current-voltage characteristics; Data models; mathematical model; minimization; photovoltaic (PV) cells; photovoltaic cells; photovoltaic systems; Power measurement; PV systems; silicon; SOLAR ENERGY; Solar power generation; Temperature dependence; Temperature distribution; Temperature measurement; PV systems; silicon; solar power generation; minimization; Current–voltage characteristics; mathematical model; photovoltaic (PV) cells
• ISSN: 2156-3381; 2156-3403
• DOI: 10.1109/JPHOTOV.2014.2364133

In order to reliably simulate the energy yield of photovoltaic (PV) systems, it is necessary to have an accurate model of how the PV modules perform with respect to irradiance and cell temperature. Building on a previous study that addresses the irradiance dependence, two approaches to fit the temperature dependence of module power in PVsyst have been developed and are applied here to recent multi-irradiance and temperature data for a standard Yingli Solar PV module type. The results demonstrate that it is possible to match the measured irradiance and temperature dependence of PV modules in PVsyst. Improvements in energy yield prediction using the optimized models relative to the PVsyst standard model are considered significant for decisions about project financing.