Investigating the performance of PV interfaced PBT based DSTATCOM by Adaptive Fuzzy logic controller for reactive power management

Advancement in technology and rapid industrialization towards extensive use of power electronic controlled devices and enormous growth towards agriculture sector in rural areas of electrical distribution system resulted in substantial increase of power quality issues as well as reactive power requirement. Voltage drop in the system due to huge active and reactive power requirements of the loads can be minimized by distributed generation. Towards this end renewable energy source Viz., Solar Photovoltaic power generation and mitigating the power quality issues at load end can be resolved by using shunt connected custom power device DSTATCOM. In this paper the performance of PV interfaced Power Balance Theory (PBT) based DSTATCOM (Distribution Static Compensator) using Adaptive Fuzzy logic PI controller and conventional PI controller for real and reactive power control is investigated using Simpowersystem block set of MATLAB. The simulation results proves that adaptive fuzzy logic PI controller provides better system response, control of real and reactive power and improvement in THD of source current over PI controller.