Optimization based reactive power control of photovoltaic inverter

Abstract

The power electronic devices may lead to power quality problems which can be overcome by power conditioning techniques. This paper proposes power conditioning scheme based on fuzzy logic for load side inverter. In this configuration a single-phase cascaded multilevel inverter is worn to control the reactive power. The DC output from PV panel is applied to 5-level inverter topology. This is configured using two capacitors and six switches. The power quality issues of this inverter output can be analyzed and controlled by using rule based process in fuzzy controller. Fuzzy control is implemented with the help of FPGA. The design and performance of fuzzy controlled multilevel inverter strategy are verified through numeric simulation.