Cascade multilevel inverter with only one DC source

Multilevel converters are a very interesting solution for medium and high voltage applications. Because of its characteristic of synthesizing a sinusoidal voltage on several DC levels. The better topology for power quality and transmission systems applications is the cascade multilevel inverters. However, this topology presents a problem that consists in the use of several DC sources. This paper presents a solution to this problem, maintaining the advantages that offer multilevel topologies, such as, high quality in the output voltage and low voltages stress in the devices. Simulation and experimental results are also included.