Technical Dialogue Session
Renewable Energy Systems I
Transformerless grid-tied inverters, Switched-capacitor cell-Common-Grounded Feature
An advance topology of single-phase five-level transformerless grid-connected inverter is presented in this study which offers a common ground between the input source and the null of grid. This alleviated the concern of variable common-mode voltage and the leakage current problem, which makes the inverter suitable for grid-tied photovoltaic (PV)-based applications. Using the SC technique, a single-stage two times voltage boosting inverter with the self-voltage balancing of the capacitors is achieved. By employing the SC cell, five distict voltage levels are also made at the inverter's output, so a small L-Type filter can be utilized.