The operating temperature plays a key role in the photovoltaic conversion process. Both the electrical efficiency and the power output of a photovoltaic (PV) module depend linearly on the operating temperature.
Swapnil Dubey et al. / Energy Procedia 33 ( 2013 ) 311 – 321 319 4. Conclusion The operating temperature plays a central role in the photovoltaic conversion process. Both the electrical efficiency and, hence, the power output of a PV module depend linearly on the operating temperature decreasing with T c .
The temperature has a large impact on the output voltage and power from a crystalline PV module. This impact is linear and increases with temperature. In high temperatures, modules with insufficient voltage may be unable to fully charge a lead acid battery.
The current voltage characteristics, I-V, are measured at different temperatures from 25°C to 87°C and at different illumination levels from 400 to 1000 W/m 2, because there are locations where the upper limit of the photovoltaic cells working temperature exceeds 80°C.
The cell temperature of a photovoltaic panel is an important parameter. The efficiency and therefore the output power is a function of the temperature. The rated power of the panel is given for STC (25°C cell temperature and 1000 W/m 2 AM 1,5 condition). In tropical countries the cell temperature may reach values of 50°C to 60°C.
1. Introduction The important role of the operating temperature in relation to the electrical efficiency of a photovoltaic (PV) device, be it a simple module, a PV/thermal collector or a building-integrated photovoltaic (BIPV) array, is well established, as can be seen from the attention it has received by the scientific community.