Brza Furijeova transformacija, primene u energetici (GRID CONNECTED INVERTER CURRENT HARMONICS DURING FAULTS IN THE NETWORK)
Abstract: In this talk we present modeling, simulation and emulation of a three-phase grid connected inverter fed with photovoltaic system. Impact of network voltage dips on inverter THDI and harmonics is observed. The inverter and control system modeling is carried out in the MATLAB/SimPowerSystems environment. The voltage dips are produced by grid emulator, and implemented in the MATLAB model. Currents were analyzed during the disturbances in the network with Fast Fourier Transform (FFT) and their dynamic range is determined.