Design and Analysis FLC Based Asymmetric Multilevel Inverter

The objective of this paper is to explore the design and analysis of Fuzzy Logic controller based Asymmetric cascaded Seven Level inverter. Several multilevel topologies are reported and the most popular topology is Cascaded Multilevel Inverter (CMLI). The proposed methods combines the analysis of the inverter with two unequal DC sources with reduced number of switches for each phase for minimizing switching losses. Fuzzy controller being chosen to regulate the output voltage and minimize harmonics. A detailed study of the technique was carried out through MATLAB/SIMULINK for switching losses and THD. Furthermore, a PI controller is used to control the MLI using the proposed PWM technique. The results were verified experimentally and FPGA processor is used for PWM. It was noticed that the proposed modulation strategy results in lower switching losses for a chosen THD as compared to the conventional strategies.