Open Loop Analysis of Cascaded H- Bridge Multilevel Inverter Using Pd- Pwm for Photovoltaic Systems

This project aims at using (PD-MCPWM) Phase disposition multi carrier pulse width modulation technique to reduce leakage current in a transformerless cascaded multilevel inverter for PV systems. Advantages of transformerless PV inverter topology is as follows, simple structure, low weight and provides higher efficiency , but however this topology provides a path for the leakage current to flow through the parasitic capacitance formed between the PV module and the ground. Modulation technique reduces leakage current with an added advantage without adding any extra components.