An improved model for predicting the maximum power point of PV modules

The maximum power is a very important quantity in operation of PV modules. The values of current, voltage and power at the peak power point are affected by the environment conditions such as incident irradiance and temperature of PV modules. In this paper, an improved analytical model using the single-diode model is proposed to predict the maximum power point of PV modules under different climatic conditions. The proposed model portrays the relationship between the maximum power and meteorological parameters G and T. The accuracy of the proposed model is verified by measured data collected in actual experiments. Compared with traditional methods, the improved model has smaller errors in estimating current, voltage and power values at the peak power point in both low and high irradiance ranges. This proposed improved model provides a reference for subsequent research on PV.