A Fuzzy Assisted Enhanced Control for Utility Connected Rooftop PV

Abstract

Abstract A modified control strategy for enhanced operation for a single phase rooftop PV connected to a single phase utility grid is presented in this paper. The current control is modified such that the quadrature references produced are independent of the grid side harmonics, which aids in the optimal control performance, even in polluted grid conditions. The transformations for the quadrature components are achieved using an inverse park phase locked loop (PLL), which enhances the PV performance, especially in the single phase. To assist the controller actions in the most efficient way, a TS fuzzy control for the DC link voltage regulation is used. Thus an improved performance for the rooftop PV With the proposed control topology is observed over the conventional control. The efficacy of the control scheme is tested in the MATLAB/SIMULINK ® environment.