Comparative Study of PI and Fuzzy Logic Controlled D-STATCOM For Improving Power Quality

Power quality (PQ) improvement is a key area of research where all the stake holders such as residential and industrial sectors are accountable to administer the power effectively and efficiently. Distribution power systems usually suffer from degraded power quality issues caused by lack of sufficient reactive power support at the time of disturbances. This research work is based on distribution static compensator (D-STATCOM) for load balancing, harmonic distortion reduction, and reactive power compensation in a three phase, three wire distribution system feeding non-linear load. The proposed control method is designed utilizing a FUZZY logic controller and is based on the synchronous reference frame theory. For improved switching of D-STATCOM, the derived reference current signal from the control algorithm is compared in the hysteresis band current controller. The effectiveness of D-STATCOM with a fuzzy logic controller is evaluated and contrasted for regulating DC voltage and reducing harmonic distortion. The suggested approach offers efficient reactive power compensation and harmonic distortion reduction. MATLAB/SIMULINK is used to simulation and analysis of the results.