Real time simulation of MPPT algorithms for PV energy system

Solar panels have a nonlinear voltage-current characteristic, with a distinct maximum power point (MPP), which depends on the environmental factors, such as solar irradiance and ambient temperature. In order to increase the power extracted from the solar panel, it is necessary to operate the photovoltaic (PV) system at the maximum power point (MPP). In this paper a novel maximum-power-point tracking (MPPT) method based on current perturbation algorithm (CPA) with a variable perturbation step and fractional short circuit current algorithm (FSCC) to determine an optimum operating current. An experimental comparative study of these maximum power point tracking methods using dSPACE is presented in this article. The effectiveness of proposed algorithm in terms of dynamic performance and improved stability is validated by detailed simulation and experimental studies.