Implementation of fuzzy logic controller for pv fed dstatcom for power quality improvement

Abstract

The major objective of this research work is to model and implement the effectiveness of DSTATCOM fed voltage source inverter based power electronics devices to store energy in the dc capacitor. The threephase supply is connected to load, while the VSI fed DSTATCOM acts as a filter at PCC to inject current in the distribution system. The proposed topology of VSI fed DSTATCOM has been simulated. The simulation results have been verified and validated with a hardware setup of VSI fed DSTATCOM. The implementation of fuzzy logic controller for multilevel inverter fed DSTATCOM was used for the synthesis of the regulated voltage. The control strategy used for the space vector modulation is meant to track the reference voltage from the inverter using a PI and fuzzy logic controller. This helped speedy achievement of a fast response time of three-phase system voltage with reduced THD and regulation of voltage. The comparative results of MLI fed DSTATCOM with SV modulation and the results have been seen and verified. The prototype model of cascaded H-bridge five-level inverter supported DSTATCOM was implemented using a design parameter. Solar photovoltaic is an advanced energy source for the future. The most important function of MPPT is to regulate the voltage and is used for converting the unregulated dc input to the controlled output voltage. The charge controller of P and O algorithm was simulated to track the reference current from the inverter. Based on the algorithm, the numerical variables were identified from the membership function for a change in the error. The hardware set up was designed for 18 V PV panel to regulate the voltage. newline