Single-Source Cascaded Multilevel Inverter With Voltage-Boost Submodule and Continuous Input Current for Photovoltaic Applications

Cascaded multilevel inverter (CMI) produces a step-up output voltage by series-connection of several submodules (SMs) supplied by isolated dc sources, which can be implemented by photovoltaic (PV) sources. The unbalanced power provided by different PV sources may however distort the output voltage. To use a single dc source while retaining the voltage boosting, this article proposes a novel CMI ba...