Power Quality Enhancement in Wind Power Generation Integrated Distribution System using Fuzzy Logic Controlled CSC Based DVR

In this paper, a model of fuzzy logic controlled CSC based DVR system has been proposed with the objective of performing voltage regulation and harmonics reduction tasks simultaneously in a power distribution system. The distribution system is integrated with a standalone renewable energy source (RES) driven i.e. wind power generation system based on self excited induction generator (SEIG) supplying power to customers having a variety of loads. For power quality (PQ) enhancement in electric power distribution systems, the custom power devices (CPDs) designed with conventional controllers such as proportional- integral (PI), proportional-integral-derivative (PID) etc. are widely used. The objective of using CPD is to mitigate the PQ problems encountered in the power distribution system that includes short and long duration voltage variations, voltage imbalance, waveform distortions etc. Amongst the various types of CPDs, the dynamic voltage restorer (DVR) is considered to be one of the versatile CPD capable of solving multiple PQ problems. In most of the literatures, the DVR is found to be designed and implemented with voltage source converter (VSC) topology and not much research work has been reported on the application of current source converter (CSC) topology in DVR system over the last couple of decades. The proposed CSC based model has been simulated using MATLAB / Simulink for investigating its performance. The simulation results support the validity of the proposed model.