Fuzzy Based Control Scheme for H-Bridge Multilevel PV Inverter with Individual MPPT Control in 3-Phase Grid-Connected Applications

This paper proposed Fuzzy based control scheme for H-Bridge multilevel PV inverter with individual MPPT control in 3-phase grid connected applications. This type of inverter topology helps to increase the flexibility and efficiency of PV systems. For better operation of PV modules and increase the solar power extraction, an individual MPPT control scheme is applied to 3-phase multilevel inverters at each phase, it will allows independent control of each dc-link voltage. Due to PV panel mismatches, it produce an unbalanced delivered power, which leads to unbalanced grid current in 3-phase grid-connected applications. In order to solve this problem, a fuzzy based control scheme with modulation compensation is proposed. Simulation results are presented to verify the possibility of the proposed approach by using MATLAB SIMULINK model design.