Z-Source Inverter based reconfigurable architecture for solar photovoltaic microgrid

Abstract

This paper proposes a reconfigurable architecture for residential microgrid (MG). The distinct feature of the residential MG is the power architecture which is developed using Z-source inverter (ZSI) for solar photovoltaic (PV) system and it can be reconfigured to current controlling mode and voltage-frequency controlling mode as well as reactive power controlling mode when solar system is idle. Hence, it improves the utilization factor of solar PV system and contributes to maintain the power quality in distribution feeder, while providing an uninterrupted power supply to the customer. The proposed architecture is developed in four stages. As the first stage, current controlling mode with MPPT is developed in MATLAB/Simulink environment and results are discussed in this paper.