Kakinada Institute of Engineering and Technology for Women
Abstract
The REC Z-source NPC inverter is accepted to come across applications in grid connected distributed generation (DG) systems based on renewable energy sources such as photovoltaic systems, wind turbines and fuel cell stacks. Two DG systems can be connected to the grid with only one REC Z-source NPC inverter thus plummeting the volume and cost while rising efficiency and facilitating control. The modulation of the REC Z-source NPC inverter was described using the carrier-based approach. However the space vector modulation (SVM) approach offers better harmonic performance compared with carrier-based pulse width modulation (PWM) strategy without zero-sequence voltage injection and can more expediently handle overall switching patterns and constraints and it is simple to implement
