Temperature fluctuation analysis of photovoltaic modules at short time interval

Photovoltaic (PV) array temperature and ambient temperature change constantly, and the current of the array is influenced by the change of the irradiation and the temperature. Many past papers described models for estimating PV module temperature. However, those models dealt with fluctuation of PV module temperature as hourly value at steady state. In order to monitor the temperature in a second level interval, we have established experimental equipment that can monitor the temperature on the second time interval scale and established a model to simulate PV module temperature. This paper presents that fluctuation of the PV module temperature can be estimated by using a heat transfer model, and demonstrates that PV module temperature influences on the output voltage at a short time interval.