Research on Photovoltaic Grid-Connected Inverter Based on Fuzzy Hysteresis Current Controller

Based on conventional hysteresis grid-connected inverter current control, a fuzzy hysteresis band width grid connected current control was presented in this paper, and a whole fuzzy hysteresis band width for PV power grid connected current controller has been designed. Simulations were performed on Matlab/Simulink software, results of simulations show that the proposed control algorithm have smaller error of current and less total harmonic distortion of current than that of conventional hysteresis control method.