Solar PV-Fed Multilevel Inverter with Series Compensator for Power Quality Improvement in Grid Connected Systems

Abstract

Power quality problems arise as a result of RES integration into the grid. Voltage fluctuations, harmonic distortion, and spikes all impact customers as power quality issues on the grid. A cheap series compensator, such as the Dynamic Voltage Restorer (DVR), is the best approach to fix these problems. In order to enhance the grid's power quality, this research introduces a novel multilayer inverter that uses solar PV as a distributed voltage rectifier. The main objective of the proposed work is to enhance power quality through the development of a DVR that simultaneously functions as an integrated 23-level multilevel inverter. Beyond that, the boost converter has an improved INC-MPPT implementation. Despite their numerous benefits, multilayer inverters encounter reliability concerns such as reduced total harmonic distortion (THD) and fewer components. The suggested design has the potential to produce 23 distinct output voltage levels by use of asymmetrical DC sources. An inverter that is both smaller and cheaper with fewer parts is one of the advantages of the MLI. On top of that, the dq reference frame rotation adjustment is well studied mathematically. To test the DVR's flexibility with an equal load, simulation approaches are used. The simulation results of the suggested structure are generated using MATLAB/Simulink. Results from the Fuzzy Logic System show that the proposed technique improves power quality and compensates better for voltage sag.