The document discusses the advantages and disadvantages of inverters. It describes a novel interleaved dual buck full bridge three level inverter (IDBFTI) that retains advantages like reducing output ripple current and total harmonic distortion. It also solves the zero sequence circulation current problem through its circuit structure. The interleaved inverter circuits share two power switches, making the system easier to extend. Test results on a 2 kW prototype verify the working principle. The document also analyzes how circulation currents can occur in interleaved half bridge inverters and how the IDBFTI design addresses this issue.