Enhancement of Power Quality with ANFIS controlled DSTATCOM in four wire three phase distribution system

Nowadays one of major power system problems is inadequacy of Power Quality (PQ) due to increased use of nonlinear loads and power electronic devices in industries. In this paper, Distributed STATCOM is proposed with Four-leg inverter to compensate the neutral current, harmonics and load balancing under unbalanced load conditions and nonlinear load in Distributed system. For controlling of four leg DSTATCOM instantaneous reactive power (IRP) theory is proposed. For DC link voltage regulation of DSTATCOM optimized PI controller and Adaptive Neuro Fuzzy Inferences System (ANFIS) controller are used. Comparison with ANFIS controlled DSTATCOM with Traditional conventional methods also investigates in this paper. The performance of proposed modeled is analyzed with MATLAB/SIMULINK Software.