CONTROL OF Z-SOURCE INVERTER USING ADVANCED FUZZY LOGIC CONTROL FOR PV SYSTEM APPLICATIONS

The Z-source inverter (ZSI) has some advantages and suitable for all the Photo Voltaic (PV) system. This paper deals with a new topology for all ZSI with battery for PV power generation and distribution system. Thus the battery is connected parallel to one of the capacitors in Z-Source (ZS) network, instead of involving an additional DC/DC converter. This system builds all the advantages of ZSI. The operating principle of the new topology is designed and the design scheme of the ZS network is explained and also closed-loop control strategy for the proposed system is analyzed to manage the three power flow of PV panel, grid, and battery in the system. Maximum Power Point Tracking (MPPT) has been implemented in the ZSI with battery based PV system by using the proposed control strategy. Different modes of operation are simulated. Simulation for this proposed system using fuzzy logic control technique is completely analyzed through the MATLAB/SIMULINK software